Replication of Screen-Printing Fabric via Ink-jet Textile Printing

2019 ◽  
Vol 2019 (1) ◽  
pp. 15-24
Author(s):  
Ming Wang ◽  
Lisa Chapman ◽  
Marguerite Moore ◽  
Minyoung Suh
Keyword(s):  
Screen Printing ◽  
Textile Printing ◽  
Ink Jet

Combined Manufacture Methods for High Density LTCC Substrates: Thick Film Screen Printing, Ink Jet, Postfiring Thin Film Processes, and Laser-Drilled Fine Vias

2009 ◽  
Vol 6 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Arne Albertsen ◽  
Koji Koiwai ◽  
Kyoji Kobayashi ◽  
Tomonori Oguchi ◽  
Katsumi Aruga
Keyword(s):  
Thin Film ◽  
Thick Film ◽  
Screen Printing ◽  
Flip Chip ◽  
High Density ◽  
Uv Laser ◽  
Fine Pitch ◽  
Ink Jet ◽  
Printing Ink ◽  
Base Substrate

This paper highlights the possible combination of technologies such as thick film screen printing, ink jet, and post-firing thin film processes in conjunction with laser-drilled fine vias to produce high-density, miniaturized LTCC substrates. To obtain the silver pattern on the inner layers, both conventional thick film printing and ink jet printing (using nano silver particle dispersed ink) were applied on the ceramic green sheets. The ink jet process made it possible to metallize fine lines with line/space = 30/30 μm. For interlayer connections, fine vias of 30 μm in diameter formed by UV laser were used. Then these sheets were stacked on top of each other and fired to obtain a base substrate. On this base substrate, fine copper patterns for flip chip mounting were formed by a thin film process. The surface finish consisted of a nickel passivation and a gold layer deposited by electroless plating. The combination of the three patterning processes for conducting traces and UV laser drilling of fine vias make it appear possible to realize fine pitch LTCC, for example, for flip chip device mounting.

Improving Performance of Laser-Printed Conductive Silver Lines

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000377-000384
Author(s):  
Dustin Büttner ◽  
Klaus Krüger
Keyword(s):  
Thick Film ◽  
Screen Printing ◽  
Printed Electronics ◽  
Production Method ◽  
Silver Particles ◽  
Ceramic Substrates ◽  
High Speeds ◽  
Conductive Line ◽  
Ink Jet ◽  
Jet Printing

Within the last decade, large efforts were made to implement digital printing as a production method for printed electronics. Especially in production of thick-film electronics, innovation is pushed forward to overcome the lacks of established screen-printing regarding flexibility and tooling. Besides the numerous approaches in using ink-jet printing for printed electronics, researchers at Helmut Schmidt University already showed huge progress in applying electrophotography (“laser printing”) as a method to print conductive silver lines in order to form a conductive layout for thick-film circuits. Electrophotography is a solvent-free method, able to directly print silver toner onto ceramic substrates, forming a conductive line after firing. Benefits are high speeds and flexibility and a huge potential regarding precision. Now, after the feasibility of the method was proven and even functional conductive layouts like RFID coils were printed, the next steps have to be taken towards developing electrophotography to an applicable method in a thick-film production process. Thus, this paper describes the efforts in improving the method's performance. Different kinds of silver particles are tested towards their possibility of forming a silver toner. The resulting silver lines are examined regarding conductivity and printing precision. Also, surface treatment of substrates is considered as a method to reduce the number of required print cycles. Corresponding tests are performed. Furthermore, different firing profiles are tested towards their influence onto the resulting silver lines. Combining the results of these examinations, the performance of conductive silver lines could be improved significantly.

An Investigation into Printing Processes and Feasibility Study for RFID Tag Antennas

2013 ◽  
Vol 315 ◽  
pp. 468-471 ◽  
Author(s):  
M.I. Maksud ◽  
Mohd Sallehuddin Yusof ◽  
M. Mahadi Abdul Jamil
Keyword(s):  
Feasibility Study ◽  
Screen Printing ◽  
Rfid Tag ◽  
Ink Jet ◽  
Jet Printing ◽  
Current Sample ◽  
Printing Processes ◽  
Rfid Antennas ◽  
A Current ◽  
Read Range

This paper will explain a study of several printing process (screen printing, flexography, gravure and ink jet printing) for RFID antennas transponder. The potential of each process will also be investigated. A current sample of RFID is selected, and the antenna processes have been identified, and the comparison of antenna read range will be exhibited.

Ink-jet printed ring resonator with integrated Microfluidic components

Circuit World ◽  
2020 ◽  
Vol 46 (4) ◽  
pp. 301-306 ◽  
Author(s):  
Laura Jasińska ◽  
Krzysztof Szostak ◽  
Milena Kiliszkiewicz ◽  
Piotr Słobodzian ◽  
Karol Malecha
Keyword(s):  
Screen Printing ◽  
Ring Resonator ◽  
Microfluidic Channels ◽  
Ink Jet Printing ◽  
Content Type ◽  
Sensor Applications ◽  
Ink Jet ◽  
Jet Printing ◽  
Microstrip Ring ◽  
Microstrip Ring Resonator

Purpose The main purpose of this study is to test the performance of the ink-jet printed microwave resonant circuits on Low temperature co-fired ceramics (LTCC) substrates combined with microfluidic channels for sensor applications. Normally, conductive patterns are deposited on an LTCC substrate by means of the screen-printing technique, but in this paper applicability of ink-jet printing in connection with LTCC materials is demonstrated. Design/methodology/approach A simple microfluidic LTCC sensor based on the microstrip ring resonator was designed. It was assumed the micro-channel, located under the ring, was filled with a mixture of DI water and ethanol, and the operating frequency of the resonator was tuned to 2.4 GHz. The substrate was fabricated by standard LTCC process, and the pattern of the microstrip ring resonator was deposited over the substrate by means of an ink-jet printer. Performance of the sensor was assessed with the use of various volumetric concentrations of DI water and ethanol. Actual changes in concentration were detected by means of microwave measurements. Findings It can be concluded that ink-jet printing is a feasible technique for fast fabrication of micro-strip circuits on LTCC substrates, including microfluidic components. Further research needs to be conducted to improve the reliability, accuracy and performance of this technique. Originality/value The literature shows the use of ink-jet printing for producing various conductive patterns in different applications. However, the idea to replace the screen-printing with the ink-jet printing on LTCC substrates in connection with microwave-microfluidic applications is not widely studied. Some questions concerning accuracy and reliability of this technique are still open.

scholarly journals Cost-effective sensors and sensor nodes for monitoring environmental parameters

2018 ◽  
Vol 31 (1) ◽  
pp. 11-23 ◽  
Author(s):  
Dragana Vasiljevic ◽  
Cedo Zlebic ◽  
Goran Stojanovic ◽  
Mitar Simic ◽  
Libu Manjakkal ◽  
...  
Keyword(s):  
Screen Printing ◽  
Printed Circuit Board ◽  
Environmental Parameters ◽  
Cost Effective ◽  
Electronic System ◽  
Water Quality Monitoring ◽  
Sensor Nodes ◽  
Circuit Board ◽  
Film Sensor ◽  
Ink Jet

This paper reviews the design and characterization of humidity and pH sensors manufactured in the printed circuit board (PCB), ink-jet, and screen printing technologies. The first one (PCB technology) provides robust sensors with PET film which can be exposed to harsh environment. The second (ink-jet technology) can manufacture sensors on flexible substrates (foils and papers). The third (screen printing technology) has been used to implement a thick-film sensor. In addition to this, a multi-sensor cloud-based electronic system with autonomous power supply (solar panels) for air and water quality monitoring has been described. Finally, a flexible and modular hardware platform for remote and reliable sensing of environmental parameters has been presented.

Investigation of disperse fluorescent ink formulation via thermal transfer printing for polyester substrate

2016 ◽  
Vol 87 (17) ◽  
pp. 2146-2153 ◽  
Author(s):  
Yunjie Yin ◽  
Ronghuan Huang ◽  
Guangjiu Bu ◽  
Chaoxia Wang
Keyword(s):  
Process Optimization ◽  
Screen Printing ◽  
Grinding Process ◽  
Color Fastness ◽  
Bending Rigidity ◽  
Transfer Printing ◽  
Thermal Transfer ◽  
Ink Jet ◽  
Flat Screen ◽  
Ink Formulation

Disperse fluorescent ink was controllably prepared via the cyclic sander grinding process and used for thermal transfer printing on a polyester substrate. Via process optimization, 0.1% pH regulator triethanolamine and 0.15% surfactant NP-12 were added in the disperse fluorescent ink. The lightness L* of the polyester substrate was 101.84 and the saturation C* was 84.21 within thermal transfer printing on the polyester substrate. Compared with flat screen printing, the bending rigidity and bending hysteresis moment of the ink-jet printed polyester substrate presented a slight change. The fluorescent effect of the printed polyester substrate was increased to 165.65, and the fluorescence reflectivity increased 4.1% at the maximum emission wavelength λmax = 510 nm. The color fastness of the printed polyester substrate was improved. In particular, the wet rubbing fastness was enhanced by one grade after the ink-jet thermal transfer printing.

scholarly journals Preparation of Novel Chitosan-Starch Blends as Thickening Agent and Their Application in Textile Printing

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
E. S. Abdou ◽  
H. M. El-Hennawi ◽  
K. A. Ahmed
Keyword(s):  
Screen Printing ◽  
Antimicrobial Properties ◽  
Fastness Properties ◽  
Dye Uptake ◽  
Color Strength ◽  
X Ray ◽  
H Nmr ◽  
Textile Printing ◽  
Gelatinized Starch ◽  
Starch Blends

Chitosan, a naturally available biopolymer which is now increasingly used as a functional finish on textile substrates to impart antimicrobial characteristics and increase dye uptake of fabrics, was blended with different ratios of gelatinized starch. The chitosan was extracted and characterized by IR,1H-NMR, and X-ray powder diffraction. These blends were tested as thickeners in textile screen printing usingCurcuma tinctoriaas natural dye. The rheological properties and the viscosity of the printing paste were measured. The effect of chitosan on the printing properties of different fabrics (natural, blends, and synthetic fabrics) was studied by measuring the color strength value (K/S) and related color parameters of the printed fabrics. The antimicrobial properties of printed fabrics were assessed. The results proved that the printed fabrics using these new thickeners showed increase in the color strength value (K/S) giving darker color which means that chitosan increased the dye uptake on fabrics. Fastness properties of the printed fabrics to washing, rubbing, perspiration, and light have also been improved. The treated fabrics were found to be antimicrobial.

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