scholarly journals Investigation of color values of inkjet and laserjet prints on recycled papers

2021 ◽  
Vol 12 (3) ◽  
pp. 5-12
Author(s):  
Ufuk Yilmaz ◽  
◽  
Ahmet Tutuş ◽  
Sinan Sönmez ◽  
◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Superior Performance ◽  
Color Measurement ◽  
Color Gamut ◽  
Measurement Scales ◽  
Office Environment ◽  
Laboratory Environment ◽  
Measurement Results ◽  
Printing System ◽  
Short Time

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.

System Design and Process Optimization for the Inkjet Printing of PEDOT:Poly(styrenesulfonate)

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
P. Wilson ◽  
C. Lekakou ◽  
J. F. Watts
Keyword(s):  
Process Optimization ◽  
Inkjet Printing ◽  
Process Model ◽  
Conductive Polymer ◽  
Process Window ◽  
Rayleigh Instability ◽  
Voltage Waveform ◽  
Electrically Conductive ◽  
Satellite Drops ◽  
Printing System

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.

A study of the effects of fabric pretreatment on color gamut from inkjet printing on polyester

2017 ◽  
Vol 109 (9) ◽  
pp. 1143-1151 ◽  
Author(s):  
Yi Ding ◽  
Lisa Parrillo-Chapman ◽  
Harold S. Freeman
Keyword(s):  
Inkjet Printing ◽  
Color Gamut

Fuel Consumption Measurement With Pulsating Flow

2003 ◽  
Author(s):  
Thomas Flauger ◽  
Stephen A. Ifft
Keyword(s):  
Fuel Consumption ◽  
Reverse Flow ◽  
Dynamic Pressure ◽  
Pressure Variation ◽  
Velocity Variation ◽  
Injection Pump ◽  
Measurement Results ◽  
Pressure Pulses ◽  
Short Time ◽  
The Impact

This paper describes the impact of pressure pulsation on a system for fuel consumption measurement. The generation of pressure pulses by the injection pump(s) on the low pressure side of Diesel engines for power generation, ship propulsion or rail traction is described. Pressure values at the location of the fuel consumption measurement system are shown. Along with measurement results of the dynamic pressure variation over a flowmeter. The relation between pressure variation and the pulse output of the flowmeter is presented. These measurements quantify the velocity variations of the fuel. With help of the measurement results, the reason for temporary reverse flow is explained. We present a system for engine related fuel consumption measurement that withstands the impact of mechanical force caused by pressure pulses, which follows the velocity variation of the fuel and which indicates and calculates short-time reverse flow to achieve an accurate measurement result.

Study on the Uniform Distributed Mechanics of Ink Droplet in Inkjet Printing Equipment

2011 ◽  
Vol 236-238 ◽  
pp. 1505-1507
Author(s):  
Qi Feng Chen ◽  
Shi Lin Yuan ◽  
Guang Xue Chen ◽  
Bao Lin Tang ◽  
Jing Lei Tai
Keyword(s):  
Theoretical Calculation ◽  
Inkjet Printing ◽  
Testing Equipment ◽  
Cross Direction ◽  
Uniform Velocity ◽  
New Type ◽  
Printing System ◽  
The Cross

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.

The Study on Color Print Quality Attributes of In-Mold Roller Using Digital Inkjet Printing

2012 ◽  
Vol 262 ◽  
pp. 340-344 ◽  
Author(s):  
Chang Lang Chen ◽  
Mei Chun Lo ◽  
Yun Ti Su ◽  
Yu Tung Chang
Keyword(s):  
Inkjet Printing ◽  
Screen Printing ◽  
Print Quality ◽  
Gravure Printing ◽  
Color Gamut ◽  
Printing Process ◽  
Study Results ◽  
Pet Film ◽  
Printing Processes ◽  
Potential Use

The In-Mold Roller is a revolutionary printing process by which objects are 3D decorated. The products decorated by In-Mold Roller are protected from water and fading. These kinds of decorations strongly increase the beauty, desirability and value of the objects. The In-Mold Roller is now using either of gravure printing and screen printing to print PET film. However, there are some problems with these two techniques. This research is to investigate the potential use of combining In-Mold Roller with digital inkjet printing in 3D decoration, e.g. in personalized printing services. The study results found show that digital inkjet printing to the PET film and then transfer to the ABS, the solid ink densities (SIDs) of primaries would increase. The tone values increases (TVIs) from highlight and middle (around 0~60%) were generally higher than those in shadows. The shapes and sizes of color gamut were also varied according to different kinds of digital UV inkjet printing processes. Moreover, after transferred, the color gamut became smaller.

Survey and Analyze the Line Output Characteristics in Inkjet Printing

2012 ◽  
Vol 217-219 ◽  
pp. 2603-2606
Author(s):  
Xiao Meng Cui ◽  
Guang Xue Chen ◽  
Huan Mei Wang
Keyword(s):  
Line Width ◽  
Inkjet Printing ◽  
Output Characteristic ◽  
Quality Detection ◽  
Study Results ◽  
Printing System ◽  
Output Characteristics ◽  
Standard Output ◽  
Positive Line

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.

scholarly journals Application of the Acoustic Emission Method for Diagnosis of On-Load Tap Changer

2017 ◽  
Vol 42 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Henryk Majchrzak ◽  
Andrzej Cichoń ◽  
Sebastian Borucki
Keyword(s):  
Acoustic Emission ◽  
Frequency Domain ◽  
Time Domain ◽  
Operating Conditions ◽  
Time Frequency ◽  
Measurement Results ◽  
Tap Changer ◽  
The Time Domain ◽  
Load Tap Changer ◽  
Short Time

Abstract This paper provides an example of the application of the acoustic emission (AE) method for the diagnosis of technical conditions of a three-phase on-load tap-changer (OLTC) GIII type. The measurements were performed for an amount of 10 items of OLTCs, installed in power transformers with a capacity of 250 MVA. The study was conducted in two different OLTC operating conditions during the tapping process: under load and free running conditions. The analysis of the measurement results was made in both time domain and time-frequency domain. The description of the AE signals generated by the OLTC in the time domain was performed using the analysis of waveforms and determined characteristic times. Within the time-frequency domain the measured signals were described by short-time Fourier transform spectrograms.

Biodegradable Nano-Material Composites for Use in an Inkjet Printing System

2006 ◽  
Vol 921 ◽  
Author(s):  
Nicole H Levi ◽  
John B. McGuirt ◽  
Faith M. Coldren ◽  
David L. Carroll
Keyword(s):  
Inkjet Printing ◽  
Collagen Type ◽  
Three Dimensional ◽  
Collagen Type I ◽  
Type I ◽  
Printing System ◽  
Walled Carbon Nanotubes ◽  
Thermal Inkjet Printing ◽  
Compatibility Of Materials ◽  
Insight Into

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.

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