Improved Design of Inkjet Printing System Based on Petri Nets

Author(s):  
Biao Guo ◽  
Ye-li Li ◽  
Li-kun Lu
2011 ◽  
Vol 268-270 ◽  
pp. 1968-1973
Author(s):  
Ye Li Li ◽  
Biao Guo ◽  
Li Kun Lu

This paper defined a kind of communication protocol between the RIP card and the printhead circuit for the inkjet printing system. Protocol project was chosen in the protocol design, for which Petri net was used. After defining the message, the protocol model was established based on colored Petri net with inhibitor arcs. The model has priority and allow different message to transmit on the same data bus subsequently. Though analyzing and simulating in CPN Tools, the model was proved to be able to realize the function.


2014 ◽  
Vol 2 (1) ◽  
Author(s):  
P. Wilson ◽  
C. Lekakou ◽  
J. F. Watts

A laboratory-scale inkjet printing system was designed for printing polymeric inks with the focus on PEDOT:PSS, a transparent, electrically conductive polymer. PEDOT:PSS inks with 0 and 1 wt. % Surfynol were tested rheologically in elongational and shear flows. A process model is presented and validated for the prediction of flow boundary after the ink exits the nozzle, including drop formation. Process optimization involved establishing a process window related to the voltage waveform, substrate temperature, speed and printed line-overlap, aiming at avoiding satellite drops, “coffee cup” rings, the Rayleigh instability, “stacked printed lines,” and discontinuities in the printed lines or films.


2011 ◽  
Vol 236-238 ◽  
pp. 1505-1507
Author(s):  
Qi Feng Chen ◽  
Shi Lin Yuan ◽  
Guang Xue Chen ◽  
Bao Lin Tang ◽  
Jing Lei Tai

This paper studied on the hydrokinetics and uniform distributed mechanics of supplying ink pressure for the inkjet printing system based on the, and the advanced testing equipment. According to the analysis of theoretical calculation and CFD, we designed a new type of equipment for supplying ink, including the structure of the transition pipe. This supplying ink equipment could make the ink droplets distribute under the equal pressure on the cross direction. The experiments showed that this new supplying ink equipment could make the ink droplets distribute under the equal pressure and uniform velocity on the cross direction, so it greatly improved the imaging effects for the inkjet printing system.


2012 ◽  
Vol 217-219 ◽  
pp. 2603-2606
Author(s):  
Xiao Meng Cui ◽  
Guang Xue Chen ◽  
Huan Mei Wang

Inkjet characters and graphics quality are impacted by rough and wavy exterior appearing along the line edge caused by feather and penetration phenomena. In order to deliberate whether only positive line attributes measurement was adequate to detect the output characteristic of an inkjet printing system, negative line quality survey was involved in. The attributes such as line width, contrast and blurriness etc. of negative lines in vertical and horizon direction together with positive lines were measured and analyzed though comparison according to ISO 13660 standard. Output characteristics of all kinds of lines were further summarized and detected in terms of attribute correlations of positive lines presented in existing study. Results show that when negative and positive lines are considered altogether the correlations among lines in different direction turn complex, which are distinguished with the simple correlativity in positive line quality detection.


2006 ◽  
Vol 921 ◽  
Author(s):  
Nicole H Levi ◽  
John B. McGuirt ◽  
Faith M. Coldren ◽  
David L. Carroll

AbstractBiomaterials for development of resorbable, three-dimensional tissue scaffolds have been used in a modified thermal inkjet printing system to explore compatibility of materials, solvents and the printing system. The polymers included collagen (type I), sodium alginate, fibronectin, poly-lactic co-glycolic acid (PLGA), polyethylene glycol (PEG), and tetraglycol were tested. Single-walled carbon nanotubes were combined with the biopolymers to determine which systems in which they would blend well, and be able to print. Uncovering which biopolymers may be printed together offers insight into development of materials which most closely match the properties of biological tissue.


2005 ◽  
Author(s):  
Taik-Min Lee ◽  
Jeong-Dai Jo ◽  
Hyun-Sub Kim ◽  
Young-Bok Ham ◽  
So-Nam Yoon ◽  
...  

Pharmaceutics ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1679
Author(s):  
Anna Lion ◽  
Ricky D. Wildman ◽  
Morgan R. Alexander ◽  
Clive J. Roberts

One of the most striking characteristics of 3D printing is its capability to produce multi-material objects with complex geometry. In pharmaceutics this translates to the possibility of dosage forms with multi-drug loading, tailored dosing and release. We have developed a novel dual material hot-melt inkjet 3D printing system which allows for precisely controlled multi-material solvent free inkjet printing. This reduces the need for time-consuming exchanges of printable inks and expensive post processing steps. With this printer, we show the potential for design of printed dosage forms for tailored drug release, including single and multi-material complex 3D patterns with defined localised drug loading where a drug-free ink is used as a release-retarding barrier. For this, we used Compritol HD5 ATO (matrix material) and Fenofibrate (model drug) to prepare both drug-free and drug-loaded inks with drug concentrations varying between 5% and 30% (w/w). The printed constructs demonstrated the required physical properties and displayed immediate, extended, delayed and pulsatile drug release depending on drug localisation inside of the printed formulations. For the first time, this paper demonstrates that a commonly used pharmaceutical lipid, Compritol HD5 ATO, can be printed via hot-melt inkjet printing as single ink material, or in combination with a drug, without the need for additional solvents. Concurrently, this paper demonstrates the capabilities of dual material hot-melt inkjet 3D printing system to produce multi-material personalised solid dosage forms.


2017 ◽  
Vol 28 (5) ◽  
pp. 971-978
Author(s):  
Jiufu Liu ◽  
◽  
Wenliang Liu Liu ◽  
Jianyong Zhou ◽  
Yan Sun ◽  
...  

2021 ◽  
Vol 12 (3) ◽  
pp. 5-12
Author(s):  
Ufuk Yilmaz ◽  
◽  
Ahmet Tutuş ◽  
Sinan Sönmez ◽  
◽  
...  

The aim of this study is to compare laserjet printing and inkjet printing properties on recycled papers. In the study, we recycled reference papers prepared in accordance with the INGEDE 11p standard. After recycling the papers, we produced test papers in the laboratory environment and examined the physical and optical properties of the obtained papers. We applied calendering process at 100 oC temperature and 20 bar pressure on the obtained test papers. After this process, we printed trigromy color measurement scales with inkjet and laserjet printers on the test papers obtaine Finally, using the spectrophotometer, we determined the printing properties of both print types. When we examined the results, we determined that in most of the printability parameters, laserjet had a superior performance and was a more usable printing system. For example, while the inkjet cyan density value is 0.94, the laserjet is 1.05. While M + Y trapping value was 28.23 in inkjet, it was 92.20 in laserjet. For example, we found the Gloss value as 2.53 in inkjet and 4.23 in laserjet. While inkjet cyan print chroma value is 44.03, it is 48.09 in laserjet. In addition, we determined that laserjet printing reached a wider area as a color gamut. Based on the color measurement results of both printing types, we have determined that the printability of recycled papers is reasonable. We have determined with experimental results that laserjet printing produces better quality prints in a short time, especially in the office environment.


2013 ◽  
Vol 2013 (CICMT) ◽  
pp. 000211-000220 ◽  
Author(s):  
Dietrich Jeschke ◽  
Mathias Niemann ◽  
Klaus Krüger

Thick-film resistors are widely used passive components. Considering circuit design and layout, decoupling the resistance from geometry is desirable. Inkjet printing offers an approach to reach this aim by allowing for in-process blending of resistor inks. To model the electric behavior of printed resistors, a conductance based linear model is derived, that is both, physically plausible and mathematically convenient. Generally the model is based on resistor layers connected in parallel. To allow for fine graduation the parallel layers are not just realized with different decadic inks but with a discrete number of ink mixtures (“virtual inks”) which are generated in-situ during printing. Both, the conductance model and the in-process ink blending are proven by real inkjet-printed resistors. For manufacturing these resistors, the used inkjet printing system was improved.


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