Inkjet printing Research Papers - Academia.edu (original) (raw)

Artículo incluido en las «Actas del I Foro Internacional de Arte Múltiple». Durante los días 20 y 21 de octubre de 2011, se celebró el I Foro Internacional de Arte Múltiple, en el marco de la Feria de "Estampa Arte Múltiple". Siguiendo... more

- by
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- Contemporary Art, Inkjet printing, Arte contemporáneo, Etching

Inkjet printing is the emerging technology for the deposition of a variety of particles. The reliable printing of nano-silver inks shows the possibilities of digital fabrication of microelectronic circuits and raises the question for further use with other particles. To compete with common thick-film screen printing as a production method it is consequential and necessary to investigate the inkjet printing of all passive electronic thick-film components. Inductors are frequently required in electronic circuits, yet they represent a main challenge for thick-film printing. With the development of new materials, which are suitable for low-temperature cofired ceramic processes, the integration of passive components promises new applications. In a first step, different ferrite particle compositions are dispersed to stabilized inks that can be used with a commercial inkjet print head. The stability of the ink is fundamental for reliable drop formation. In addition, the viscosity must fit ...

- by Marcel Waßmer
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- Microelectronics, Inkjet printing, Ferrite, Magnetic Properties

In this keynote the focus is on mapping out the landscape of benefits provided by multi-primary printing and on highlighting some of the major challenges that stand in the way of harnessing its potential. A brief introduction to three and four primary printing and the business needs for multi-primary printing is followed by an enumeration of potential benefits that printing with more than three primaries has. Next some of the key challenges of using larger numbers of primaries are discussed and finally examples are given of future opportunities opened by multi-primary printing.

- by Ján Morovič
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- Inkjet printing, Color Image Processing, Printing, Color Science

BaTiO3 thin films have been prepared by inkjet depositing of ceramic inks based on barium titanate nanopowder. Formulated inks had good sedimentation stability. The most significant stabilization of the pigment was observed for samples formulated on ethyl and n-butyl alcohols. All prepared inks had dilatant flow with a pronounced minimum viscosity of Newtonian flow. The printing operation was performed using thermal drop-on-demand inkjet printer. Printed films had dense structure and considerable adhesion to the substrate surface. Optical profilometry of the three layer film showed thickness about 400 nm. Due to strong adhesion printed coatings have not separated from the substrate surface. Special method of forming an intermediate polymer film on the substrate surface has been used to separate printed patterns. Aggres-sively dissolving of an intermediate polymer film has been observed during printing on this intermediate layer. After printing of each subsequent layer substrate thickness has been reduced on average 200 nm and took place rising of surface roughness. However, printed layer has been removed from the substrate surface.

- by Roman Kyrpal
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- Inkjet printing, Non-Newtonian Rheology, BARIUM TITANATE, Ceramic Ink

Nanography – as the term suggests – uses much smaller ink dots than traditional inkjet systems in an effort to produce the cleanest, most well defined and accurate print available. Also known as the Nanographic Printing® process, nanography mimics the performance of traditional offset and the flexibility of digital printing with two big, game changing factors: detail and flexibility. Landa Printing Company has introduced several nanoprinters with the intent to produce superior inkjet printing that surpasses standard printing methods in both cost and quality.

- by MICHAEL NORTHROP
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- Digital Media, Inkjet printing, Digital Printmaking, Printing

To Trust is Good, to See is Better and to Measure is Best. Brief outline illustrates global standards in process controls on systems Hardware, Software and Firmware all to improve your imaging quality and profits first time and every... more

To Trust is Good, to See is Better and to Measure is Best.
Brief outline illustrates global standards in process controls on systems Hardware, Software and Firmware all to improve your imaging quality and profits first time and every time.

- by Greg Imhoff
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- Inkjet printing, Printing, Additive Manufacturing and 3D printing

3D Printing also known as additive manufacturing (AM) has been around for some time now, and although it is considered in-development technology, its potential to change our daily lives makes it as one of the most prospect technologies. According to Financial Times it is considered potentially larger than the Internet. AM offers its consumers options to personalize their own products, and a mass customization in industries like Health. Customization cannot be understated, day by day consumers are becoming more demanding, and 3D printing is expected to play a significant role in the future. There is a wide variety of printing processes, some offer better quality but with higher costs, and sometimes with a limited printed material. Overall a low cost, high quality and fast production 3D printing technology is still missing. This paper is meant to be read by all types of readers or for future users and doesn't require a basic knowledge about 3D printing. The main purposes of this paper are to explain what 3D printing is, its past and what the future holds, the different printing technologies and main applications.

- by Paulo Barbosa and +1
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- Technology, Inkjet printing, Printing History, 3D printing
- by Scott Sabreen
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- Materials Science, Plasma Physics, Polymer Chemistry, Polymer science

This study dealt with Cymbgon Citratus Mixture with Base Alba Extract as a Mosquito Repellent Ink. This stud seeks to find out the effectiveness of the lemon grass/ kamias solution mixed with alugbati extract as a mosquito repellent ink in terms of volume of the mixture (ml), duration, number of mosquitoes repelled, and the effect of the solution to the area. According to Olivia (2011) studies found out that Cymbogon Citratus is one of the best plant to be substitute containing citronella. Leo Burnett What's more Mawimba distinguished a changed to blend citronella essence, an exceedingly compelling characteristics repellent, in the papers ink. The materials that were used in the study for mosquito culturing are the following: ½ kilo mongo sprout, water, blender, strainer, container (2), 2 15 " by 17 " net and rubber. For ink making, the materials were used: alugbati seeds, mortar and pestle, container, 1 tbsp. of vinegar, 2 tbsp. of ethel Alcohol, 1 tbsp. of salt and a strainer. For Essential oil, the materials were used: lemongrass, water, container, and distillation process. (Apilon ang procedure). Based on the experimental done by the researchers, the researchers found out that alugbati is effective as mosquito repellent because of its vinegar content. The more volume of alugbati ink, the longer the duration of repellency when applied to a paper. All the trials have the same results in terms of the volume of mixture, duration of repellency, and the number of mosquito repelled. In conclusion, cymbogon citratus mixed with alba extract is an effective mosquito repellent in terms of volume of the mixture, the duration of repellency and its ability to be an ink. Also, the mosquito repellent ink is safe because it comes from organic materials. The researchers recommend to the future researchers and people to try other alternatives such as glass chambers instead of papers then oxidized the ink and test the blackness of the ink. Also, to use the newly discovered mosquito repellent ink as an alternative printing ink. For it is way more safer than of the commercialized inks sold on the market.

Digital textile printing began its journey in the early 1990s and in the early stages its viability and chances of success were doubted by many. The reason being the demands of the textile applications are extreme. Some challenges posed... more

- by Aditya Chandavarkar
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- Inkjet printing, Digital Textiles
- by Gangadharan .A
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- Inkjet printing

The print quality in digital printer like Epson Stylus Pro 7900 is influenced by the various printing parameters and among these dot shape, screen resolution and paper are considered to be the major. The study conducted here was to evaluate the print quality in terms of the maximum number of color that it can reproduce on two different printing substrates at different dot shapes and resolutions by maintaining other printing parameters constant. Linearization and profiling of the Epson stylus Pro 7900 printer for all these combinations were completed using IT8.7-3 CMYK standard test target using Harlequin RIP V8.3 software. Then the color gamut volumes are analyzed using Taguchi's Design of experiments in Mini Tab software. This is done to evaluate the significant parameter that has a major influence on the color gamut. From the result obtained in the project it was concluded that change in the dot shapes and resolutions have less influence on the color gamut than the substrate's surface property. The glossy effect of the Epson proofing commercial 187 GSM paper has shown a significant change in the color gamut in comparison with the other paper properties and printing attributes. There are different paper substrates available which are mainly made for use in ink jet printer and since these digital devices are widely used for proofing and by photographers, it is better to take similar type of study to know the print quality on different paper substrates and making a profile for each paper is a must for achieving a consistent print in more economic way.

- by Editor IJRET
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- Inkjet printing, Design of Experiments

Droplet-based bioprinting (DBB) offers greater advantages due to its simplicity and agility with precise control on deposition of biologics including cells, growth factors, genes, drugs and biomaterials, and has been a prominent technology in the bioprinting community. Due to its immense versatility, DBB technology has been adopted by various application areas, including but not limited to, tissue engineering and regenerative medicine, transplantation and clinics, pharmaceutics and high-throughput screening, and cancer research. Despite the great benefits, the technology currently faces several challenges such as a narrow range of available bioink materials, bioprinting-induced cell damage at substantial levels, limited mechanical and structural integrity of bioprinted constructs, and restrictions on the size of constructs due to lack of vascularization and porosity. This paper presents a first-time review of DBB and comprehensively covers the existing DBB modalities including inkjet, electrohydrodynamic, acoustic, and micro-valve bioprinting. The recent notable studies are highlighted, the relevant bioink biomaterials and bioprinters are expounded, the application areas are presented, and the future prospects are provided to the reader.

- by Ibrahim Tarik Ozbolat
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- Biomaterials Engineering, Biomaterials, Tissue Engineering, Stem Cells

Purpose – This paper aims to summarize the latest developments both in terms of theoretical understanding and experimental techniques related to inkjet fluids. The purpose is to provide practitioners a self-contained review of how the performance of inkjet and inkjet-based three-dimensional (3D) printing is fundamentally influenced by the properties of inkjet fluids.
Design/methodology/approach – This paper is written for practitioners who may not be familiar with the underlying physics of inkjet printing. The paper thus begins with a brief review of basic concepts in inkjet fluid characterization and the relevant dimensionless groups. Then, how drop impact and contact angle affect the footprint and resolution of inkjet printing is reviewed, especially onto powder and fabrics that are relevant to 3D printing and flexible electronics applications. A future outlook is given at the end of this review paper.
Findings – The jettability of Newtonian fluids is well-studied and has been generalized using a dimensionless Ohnesorge number. However, the inclusion of various functional materials may modify the ink fluid properties, leading to non-Newtonian behavior, such as shear thinning and elasticity. This paper discusses the current understanding of common inkjet fluids, such as particle suspensions, shear-thinning fluids and viscoelastic fluids.
Originality/value – A number of excellent review papers on the applications of inkjet and inkjet-based 3D printing already exist. This paper focuses on highlighting the current scientific understanding and possible future directions.

- by Huseini Patanwala
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- Inkjet printing

This study is a comparison of a conventional paper sizing recipe with a traditional one with the purpose to establish whether possibly harmful additives are necessary to establish printability for inkjet printing.
Surface sizing most commonly consists of starch and additives and is applied as a layer on top of paper that is aimed for printing. Paper manufacturers commonly add cationic compounds – such as polyDADMAC – to the sizing (Kleebauer et al., REAR). PolyDADMAC is a high charge density cationic polymer and in debate of causing aquatic toxicity (Artschwager-Perl et al.).
Since its monomers are also derived from non-renewable resources, its use should be prevented from an environmental standpoint. Another argument for the avoidance of polyDADMAC as a sizing agent is the hypothesis that the flocculating characteristics of the compound may negatively impact the deinking process of the printed product, which would affect the recyclability of the paper.
This study aims to test whether a cationised starch can lead to a similar printability than a sizing using polyDADMAC. For this purpose, a typical inkjet paper sizing, consisting of starch, calcium chloride for pigment fixation and polyDADMAC for cationisation is tested against a sizing consisting of cationised starch and calcium chloride. To compare the two sizings with another, they were applied on an untreated paper and then tested for printability using established methods. Measurements of surface tension and ink setting time, as well as analysis of the fibre structure with SEM imaging and topographic analysis aided in the evaluation. The printability tests included code verification, ink and calcium chloride penetration depth measurements, Mottling-, Bleeding- and Wicking-calculations and print density and colour analysis.
In order to test the hypothesis that polyDADMAC could negatively impact the recyclability, a deinking test was done also. However, the results of the deinking test could not confirm this hypothesis.
As for printability, the sizing with cationic starch (further called sizing B/ substrate B) produced sharper print impressions than the paper with the sizing including polyDADMAC (further called sizing A / substrate A), especially when printed on with black ink. It also produced a better ink density, as the ink did not penetrate far into the substrate.
However, the ink setting time on substrate B was – with an average of ACDF.B ms – too high for industrial application as it would lead to smudging of the ink. Another impediment is the result of the cyan printed ink. The visual inspection of cyan full tone printed areas on substrate B showed significant inhomogeneities, which were confirmed by the mottling analysis. The high ink setting time can be explained by the topographic analysis, which showed that the sizing has clogged the pores, hindering the ink vehicle from penetrating into the substrate quickly. That the sizing evened the surface instead of covering the fibrous structure with a thin layer may be the result of the sizings high viscosity.
The sizing with cationic starch instead of polyDADMAC cannot be recommended for use in an industrial setting due to the ink setting time and mottling effects of cyan ink. However, further research could lead to satisfying results.

Inkjet print attributes like color gamut, grain and cost are a consequence of the materials and printing technology used and of choices made during color management, color separation and halftoning operations. Traditionally color separation determines what amounts of the available inks to use for each reproducible color and halftoning deals with the spatial distribution of inks that also results in the nature of their overprinting. However, using an ink space as a means of communication between color separation and halftoning gives access only to some of the printed patterns that a printing system is capable of and therefore only to a reduced range of print attributes. Here a method -HANS -is proposed to gain access to all possible, printable patterns by specifying relative area coverages of a printing system's Neugebauer primaries instead of only ink amounts. This results in delivering prints with more optimal attributes (e.g., using less ink and giving rise to a larger color gamut) than is possible using current methods.

- by Jordi Arnabat and +2
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- Cognitive Science, Image Processing, Inkjet printing, Color Image Processing

We introduce a non-lithographical and vacuum-free method to pattern silicon. The method combines inkjet printing and metal assisted chemical etching (MaCE); we call this method " INKMAC ". A commercial silver ink is printed on top of a silicon surface to create the catalytic patterns for MaCE. The MaCE process leaves behind a set of silicon nanowires in the shape of the inkjet printed micrometer scale pattern. We further show how a potassium hydroxide (KOH) wet etching process can be used to rapidly etch away the nanowires, producing fully opened cavities and channels in the shape of the original printed pattern. We show how the printed lines (width 50–100 µm) can be etched into functional silicon microfluidic channels with different depths (10–40 µm) with aspect ratios close to one. We also used individual droplets (minimum diameter 30 µm) to produce cavities with a depth of 60 µm and an aspect ratio of two. Further, we discuss using the structured silicon substrate as a template for polymer replication to produce superhydrophobic surfaces.

- by Sasha Hoshian and +3
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- Chemical Engineering, Microstructure, Microfluidics, Inkjet printing

UVLED-curable flexible inks for color printing of flexible/stretchable and wearable plastics products is one of the newest advancements in industrial inkjet technology. Customizable vivid images and two-dimensional codes are jetted onto a variety of flexible polymer products such as polyolefin bottles, athletic exercise stretch bands and elastomeric/rubber wearables without cracking or distorting the printed image with high percentage stretch elongation. This breakthrough incorporates a new proprietary full-color gamut UV LED flexible ink that is toxicity and biocompatibility certified for specific applications. Developed by The Sabreen Group, US.

- by Scott Sabreen and +1
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- Inkjet printing, Printing Technology, Wearables, Digital printing

An inkjet printing process for depositing palladium (Pd) thin films from a highly loaded ink (>14 wt%) is reported. The viscosity and surface tension of a Pd-organic precursor solution is adjusted using toluene to form a printable and stable ink. A two-step thermolysis process is developed to convert the printed ink to continuous and uniform Pd films with good adhesion to different substrates. Using only one printing pass, a low electrical resistivity of 2.6 μΩ m of the Pd film is obtained. To demonstrate the electrochemical pH sensing application, the surfaces of the printed Pd films are oxidized for ion-to-electron transduction and the underlying layer is left for electron conduction. Then, solid-state reference electrodes are integrated beside the bifunctional Pd electrodes by inkjet printing. These potentiometric sensors have sensitivities of 60.6 ± 0.1 and 57 ± 0.6 mV pH−1 on glass and polyimide substrates, and short response times of 11 and 6 s, respectively. Also, accurate pH values of real water samples are obtained by using the printed sensors with a low-cost multimeter. These results indicate that the facile and cost-effective inkjet printing and integration techniques may be applied in fabricating future electrochemical monitoring systems for environmental parameters and human health conditions.

- by Yiheng Qin and +2
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- Sensor, Electrochemistry, Inkjet printing, Additive Manufacturing

Spectral printing is a well-established part of imaging that can boast of a rich body of literature. Nonetheless there has been limited commercial uptake of this approach to visual content reproduction, in spite of its clear benefits. The aim of the present paper is therefore to explore what may lie behind this apparent mismatch by looking at how colorimetric (metameric) and spectral reproduction compare on an 11-ink printing system. To aid the above exploration, the paper proposes a new metric for evaluating spectral reproduction in a visually meaningful way and presents an analysis of the spectral properties of colorimetric and spectral reproductions of a variety of original content including spot colors and fine art.

- by Jordi Arnabat and +2
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- Spectral Methods, Inkjet printing, Color Perception, Color

Beberapa tanda error dan cara memperbaiki printer Epson L Series: 1. Lampu tintanya berkedip dan masih bisa mencetak Kalau lampu tintanya berkedip dan masih bisa mencetak, itu tanda tinta akan segera habis secara sistem. Gunakan saja terus printernya sampai lampu tintanya menyala tanpa berkedip. Pada saat itu lakukan reset ink levels dengan menekan tombol tinta agak kuat atau tekan selama 3 detik, lepaskan, lalu dengan segera tekan lagi sekali. Reset ink levels berhasil jika lampu tinta padam. 2. Lampu tinta berkedip dan sudah tidak bisa mencetak Kalau lampu tinta berkedip dan sudah tidak bisa mencetak, kemungkinan service required, pembuangan tintanya penuh. Silakan bawa printernya ke service center atau service shop Epson terdekat untuk dilakukan servis ringan. 3. Lampu tinta dan kertas berkedip bergantian dan sudah tidak bisa mencetak (waste ink full) Kalau lampu tinta dan kertas berkedip bergantian dan sudah tidak bisa mencetak, kemungkinan service required, pembuangan tinta penuh. Anda perlu untuk memakukan reset waste ink counter menggunakan resetter tool yang bisa didownload di sini passwordnya: cahconx Video tutorial nya: 4. Tinta tidak keluar setelah lupa menutup tangki tinta Coba buka keempat tutup tangki tinta, lalu lakukan power ink flushing sekali lagi. Setelah selesai, tutup kembali tangki tintanya, diamkan printer beberapa saat, lalu coba lakukan test print.

- by Fendy Pratama
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- Information Technology, Inkjet printing, teknologi Informasi, Teknik Informatika

In the present review the state-of-the art and trends in the design and elaboration of fully inkjet printed sensors for abiotic environmental factors are summarized. The study is focused to technological aspect of sensor fabrication such as used printer, inks and substrates. The paper reviews five sensor types for temperature, humidity, pressure, irradiance and chemical properties measurement based on different transduction principles.

- by Георги Николов
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- Sensors and Sensing, Inkjet printing, Ecology, Printed Electronics

There is always somebody who can make it cheaper! Be different! Innovate!

- by Lucien Moons
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- Inkjet printing, Printmaking, 3D printing, Textile Printing, Dyeing and Finishing

Aqueous dispersions of nano-scale organic pigments were prepared through ball milling and ultra-sonication in presence of dispersing agents. The well dispersed pigment was encapsulated into UV-curable resin via miniemulsion technique. Effects of molecular structure of organic pigments, type of dispersing agent and time of ball milling were investigated. Results showed that C.I. Pigment Green7 had better dispersion stability with time compared with other pigments. Ultracentrifuge sedimenta-tion test, shelf life stability, thermal gravimetric analysis (TGA) and transmission electron microscope (TEM) provided supporting evidences for the encapsulation of C.I. Pigment Green 7 into polyester tetraacrylate/1,6-hexandiol dimethacrylate. Zeta potential results proved that UV-curable encapsulation of C.I. Pigment Green 7 intensifies the charge on the surface of the pigment and significantly increases the dispersion stability. This method of modifying organic pigments to be used as pigmented UV-curable inkjet inks was found to be durable and effective in preliminary application in inkjet printing of textiles.

We report thin-film morphology studies of inkjet-printed single-droplet organic thin-film transistors (OTFTs) using angle-dependent polarized Raman spectroscopy. We show this to be an effective technique to determine the degree of molecular order as well as to spatially resolve the orientation of the conjugated backbones of the 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-Pentacene) molecules. The addition of an insulating polymer, polystyrene (PS), does not disrupt the π–π stacking of the TIPS-Pentacene molecules. Blending in fact improves the uniformity of the molecular morphology and the active layer coverage within the device and reduces the variation in molecular orientation between polycrystalline domains. For OTFT performance, blending enhances the saturation mobility from 0.22 ± 0.05 cm2/(V·s) (TIPS-Pentacene) to 0.72 ± 0.17 cm2/(V·s) (TIPS-Pentacene:PS) in addition to improving the quality of the interface between TIPS-Pentacene and the gate dielectric in the channel, resulting in threshold voltages of 0 V and steep subthreshold slopes.

- by David James
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- Inkjet printing, Raman Spectroscopy, Morphology, Organic Electronics

We present a method to determine accurately the position and mass of an entity attached to the surface of an electrostatically actuated clamped–clamped microbeam implemented as a mass sensor. In the theoretical investigation, the microbeam is modeled as a nonlinear Euler– Bernoulli beam and a perturbation technique is used to develop a closed-form expression for the frequency shift due to an added mass at a specific location on the microbeam surface. The experimental investigation was conducted on a microbeam made of Polyimide with
a special lower electrode to excite both of the first and second modes of vibration. Using
an ink-jet printer, we deposited droplets of polymers with a defined mass and position on
the surface of the microbeam and we measured the shifts in its resonance frequencies. The theoretical predictions of the mass and position of the deposited droplets match well with the experimental measurements.

- by Adam Bouchaala
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- MEMS, Inkjet printing, Mass Sensors

In this article, we describe electrically conductive nanoblends containing poly(aniline-co-3aminobenzoic acid) (PANABA), poly(styrene-alt-maleic acid) (PSMAC), and polystyrene. PANABA copolymers on a nanoscale were prepared under ultrasonic irradiation by the oxidative copolymerization of aniline and 3-aminobenzoic acid at different molar ratios. PSMAC was also prepared in our laboratory. The obtained conductive nanoblends formed films with good homogeneity and flexibility. The conductivity of the obtained nanoblends was measured with a four-probe method.

- by Asanga Ranasinghe
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- Engineering, Materials Engineering, Condensed Matter Physics, Inkjet printing

Color separation is currently used to decide how much of each available colorant to use for each printable color and halftoning then builds patterns that meet those choices. Print color, however, depends not only on how much of each colorant is used, but also on how those colorants are superimposed. Furthermore, there are many halftone patterns that correspond to a given combination of ink amounts. HANS (Halftone Area Neugebauer Separation), which we introduced at last year's IS&T's CIC conference, is a move towards specifying halftone pattern statistics and enables control over print properties beyond their current limits. While the benefits of HANS for color gamut and ink use efficiency have been shown, at this year's NIP, we would like to look more closely at how to determine the set of all possible halftone patterns that match a given color and demonstrate how access to such sets -metamer sets -benefits print control. We will also illustrate how even for a simple CMY ink set, which using current approaches leads to exactly one ink combination per printable color, there are sets of alternative halftone patterns that match a given color. Such sets in turn allow for tradeoffs to be made, e.g., between grain and ink use, even in this simple case.

- by J. García-reyero and +1
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- Image Processing, Inkjet printing, Color Image Processing, Printing

- by ramakrishna nayak
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- Engineering, Inkjet printing, Design of Experiments, Engineering Technology

After a piezoelectric inkjet printhead jets the first droplet, the actuating membrane still vibrates, creating residual vibrations in the ink channel, which can degrade the inkjet printhead performance. For suppressing these vibrations, an optimized actuating voltage waveform with two pulses must be obtained, of which the first pulse is used for jetting and the second pulse is used to suppress the residual vibrations. In this study, the pressure history within the ink channel of a recirculating piezoelectric inkjet printhead was first acquired using lumped element modeling. Then, for suppressing residual vibrations, a bipolar voltage waveform was optimized via analysis of the tuning time (t t), dwell time (t d2), rising time (t r2), falling time (t f2), and voltage amplitude of the second pulse. Two voltage waveforms, Waveform 01 and Waveform 02, were optimized thereafter. In Waveform 01, t t = 2 µs, t d2 = 2 µs, and t r2 and t f2 = 1 µs were finalized as the optimal parameters; in the case of another waveform, the optimal parameters of t d2 , t r2 , and t f2 were found to be 4, 1, and 1 µs, respectively. The optimal voltage amplitude of the second pulse was found to be 1/3 the amplitude of the first pulse. On the basis of our analysis, the tuning time in Waveform 01 is the most sensitive parameter, and the performance yielded is even poorer than that yielded by standard waveform, if not optimized. Therefore, the other waveform is recommended for the suppression of residual vibrations.

- by Muhammad Ali Shah
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- Inkjet printing, Modeling, Piezoelectric Thin Films, Lumped Circuit Model

The recirculation of ink in an inkjet printhead system keeps the ink temperature and viscosity constant, and leads to the development of a high-performance device. Herein, we propose a recirculating piezo-driven micro-electro-mechanical system (MEMS)-based inkjet printhead that has a pressure chamber, a nozzle, and double restrictors. The design and characteristic analysis are performed using a two-port lumped element model (LEM) to investigate the effect of design parameters on the system responses. Using LEM, the jetting pressure at the pressure chamber, velocity at the nozzle inlet, meniscus pressure, and Helmholtz resonance frequency are predicted and the comparative analysis of the jetting pressure and velocity between LEM and the finite element method (FEM) simulation is conducted to validate our proposed LEM method. Furthermore, the effect of a change in major design parameters on the jetting pressure, velocity, and Helmholtz resonance frequency is analyzed. On the basis of this analysis, the optimized device dimensions are finalized. From our analysis, it is also concluded that the restrictor is more sensitive than the pressure chamber in terms of their variations in depth. As the cross-talk effect can occur due to an array of hundreds or thousands of nozzles, we investigated the effect of a single activated nozzle on the non-activated neighboring nozzles, as well as the effect of multi-activated nozzles on a single central nozzle using our proposed LEM.

- by Muhammad Ali Shah
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- Inkjet printing, Piezoelectric Materials, Droplets, Droplet Based Microfluidics

Paper used in the printing industry generally contains a relatively thin porous coating covering a thicker fibrous base layer. The three-dimensional pore structure of coatings has a major effect on fluid flow patterns inside the paper medium. Understanding and quantifying the flow properties of thin coating layers is hence crucial. Pore spaces within the coating have an average size of about 180 nm. We used scanning electron microscopy combined with focused ion beam (FIB-SEM) to visualize the nano-scale pore structure of the paper coating layer. Post-processing of the FIB-SEM images allowed us to reconstruct the three-dimensional pore space of the coating. The 3D FIB-SEM images were analyzed in detail to obtain pore size distribution and porosity value. The permeability was estimated using the GeoDict software, based on solutions of the Stokes equation. By determining the porosity and permeability of increasingly larger domain sizes, we estimated the size of a representative elementary volume (REV) for the coating layer to be 60 µm3, which is well within the volume analyzed using FIB-SEM. The estimated porosity and permeability of the REV domain were 0.34 and 0.09 mDarcy, respectively. Using the pore morphology method, capillary pressure-saturation (Pc-S) and relative permeability curves of the REV domain could be constructed next. The Pc-S curves showed that the coating had a high air entry suction, which is very favorable for printing in that ink will invade the coating as soon as it is applied to the coating. Our results are essential for macroscale modelling of ink penetration into a coating layer during inkjet printing. Macroscopic models can be valuable tools for optimization of the penetration depth and the spreading of ink on and within paper substrates.

- by A. Raoof
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- Inkjet printing, Fibres and textiles, Surface Coatings, Printing, Paper, Ink
- by Edwin De Pauw
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- Forensics, Forensic Science, Inkjet printing, Mass Spectrometry

An evaluation was carried out on the technical and economic feasibility in the bubble ink jet printer cartridge formulation from five certain proportions in distilled water of the natural dyes ink leaf (Trophis Racemosa l. Urb.), logwood (Haematoxylum Campechianum l.) and sugar cane bagasse combustion residue, using common additives in the industry of generic inks. The optimum concentration of inks was determined by visible spectrophotometry and physicochemical properties of surface tension and viscosity as well. The drying time was also evaluated. A printing test was performed of the inks and then each test was subjected to a comparison of the impressions regarding the intensity of coloring. There was also an economic feasibility study. This research was performed in order to opt for the Chemistry Engineer title from the University of San Carlos of Guatemala.

- by Ronny G. Guay
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- Inkjet printing, Natural Dyes and their applications, Inkjet Drop, Natural Dye

This paper reports a customized silver ink and its inkjet printing process on a cellulose electro-active paper (EAPap). To synthesize a silver ink, silver nanoparticle is synthesized from silver nitrate, polyvinylpyrrolidone and ethylene glycol, followed by adding a viscosifier, hydroxyethyl-cellulose solution, and a surfactant, diethylene glycol. The silver ink is used in an inkjet printer (Fujifilm Dimatix DMP-2800 series) to print silver electrodes on cellulose EAPap. After printing, the electrodes are heat treated at 200ºC. The sintered electrodes show that the thickness of the electrodes linearly increases as the number of printing layers increases. The electrical resistivity of the printed electrodes is 23.5 µΩ-cm. This customized ink can be used in inkjet printer to print complex electrode patterns on cellulose EAPap to fabricate flexible smart actuators, flexible electronics and sensors.

- by Mohammad Khondoker
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- Inkjet printing, Silver Nanoparticles, Conductive Silver Ink

This paper provides an in-depth case study of the ink-jet printing (IJP) technology that emerged from a mature industrial sector in the Castellon region (Spain) in the first decade of 2000. We propose an analytical framework that combines the theoretical perspectives of Industrial Districts and Innovation Systems, and exploit a qualitative methodology that includes information from patent and scientific article databases, technical literature and 21 interviews. Our results show that IJP is a major innovation that breaks with the tradition of machinery innovations in this industry in Spain. We provide micro-level evidence of the complex external and internal relationships in the innovation process. Internal ties, trust relations and strong in-house R&D were the determinants of the IJP innovation. In contrast to the literature, we find that secrecy and patenting play key roles in the sharing of knowledge and the innovation strategy. 1 monica.edwards@itc.uji.es

A resistive sensor for strain measurements that uses inkjet technology for biomedical applications has been studied, designed, manufactured and tested. Preliminary experimental results of a single sensor are shown and commented. The inkjet printing process is based on the emission through a nozzle of a material in liquid phase in fixed quantity, usually called ink, in the form of microscopic droplets contained in a cartridge. The emitted drop falls on a substrate, forming a pattern. The liquid solidification can occur through the solvent evaporation, chemical modifications or crystallization. Often a post-processing is required, such as thermal annealing or sintering. For the realization of the resistive sensor, a nanocrystalline silver ink was chosen. The substrate is Kapton and several studies demonstrate its biocompatibility as well. In this paper, a preliminary analysis of the material, its compatibility with the desired printer, the design considerations and finally the experimental results with the calculation of the Gauge Factor are shown. The research purpose is to study sensors, thin, flexible, inexpensive, and biocompatible for applications within the human body.

- by Mauro Serpelloni
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- Sensors and Sensing, Inkjet printing
- by Phương Đặng Thành
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- Inkjet printing

Referensi printer epson harga 1 juta-an – asalamualaikum kembali sekali lagi dengan blogprinter. net yang kesempatan ini juga akan membahas tentang beberapa printer epson harga terjangkau yang pas untuk keperluan pencetakan menengah, printer – printer epson paling baik dari type paling baru sampai terlama yang dibahas kesempatan ini mungkin dapat di menjadikan referensi pilihan Anda sebelumnya mengambil keputusan beli printer epson di toko printer di sekitaran. Printer epson sendiri memiliki cukup banyak type printer dari yang memiliki peranan tunggal jadi mesin pencetak saja (single print) maupun yang memiliki feature dan sarana yang komplit (printer multifungsi) baik untuk pencetakan, foto copy, scan dan fax. Harga printer epson ini sesuaikan dengan kelengkapan fasiltas yang dipunyai printer itu, namun Anda tidaklah perlu cemas karena pihak printer epson sendiri juga tetaplah memerhatikan pada keperluan mesin bikin kelas menengah kebawah seperti pada penggunaan printer pribadi dirumah dan ukm.

- by cs mandala
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- Inkjet printing, 3d Printer

A previously synthesized silver nanoparticle based conductive silver ink was used in this work to print conductive
electrodes on cellulose electro-active paper (EAPap) by using an inkjet printer. Then, Inkjet printed cellulose EAPap
experienced a post-deposition heat treatment-sintering process to enhance electrical conductivity of printed electrodes by
converting those printed patterns into continuous metallic state. The dependences of electrical bulk resistivity of printed
electrodes on both sintering temperature and sintering time were checked. It was found that, higher sintering
temperatures and longer sintering process result lower resistivity. In addition, the uniformity of the thicknesses of printed
electrodes through transverse direction and the relationship between thickness and the number of printing also had been
analyzed. Those printed electrodes also showed very good adhesion on cellulose EAPap.

- by Mohammad Khondoker
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- Inkjet printing, Silver Nanoparticles, Conductive Silver Ink
- by Mikhail Barenov
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- Inkjet printing

Inkjet printing has been used to fabricate glucose sensors using glucose oxidase and screen printed carbon electrodes. By appropriate selection of printing and drying conditions we are able to fabricate sensor structures that show a good linear response to glucose concentration. In order to achieve these structures we must carefully control the spreading and drying of the enzyme solution on the carbon electrode. Carbon electrode suirfaces are hydrophobic and Triton X was used as a surfactant to allow full coverage of the electrode surface. During drying, under ambient conditions the enzyme solution segregates to form a ring deposit (coffee staining). Coffee staining is shown to be deleterious to sensor performance and it can be removed by drying in a reduced humidity environment.

- by guido drago
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- Physics, Materials Science, Inkjet printing, Nanotechnology

* Introduction of Experts for Digital Printing & Conventional Printing. * Digital Printing Expert from Drust Italy about Latest Trend in Digital Printing, and The Greentex-Pigment Solution Revolution the Digital Textile Market * The... more

* Introduction of Experts for Digital Printing & Conventional Printing.
* Digital Printing Expert from Drust Italy about Latest Trend in Digital Printing, and The Greentex-Pigment Solution Revolution the Digital Textile Market
* The Conventional Textile Printing

- by Anne Sulistijadewi
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- Textiles, Digital Fabrication, Inkjet printing, Woven Textiles