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.

The Study on Color Quality Attributes of IMR with PET on White Ink by UV Inkjet

2014 ◽  
Vol 1004-1005 ◽  
pp. 799-802 ◽  
Author(s):  
Chang Lang Chen ◽  
Yu Tung Chang ◽  
Sheng Hao Taso ◽  
Weichieh Hsu
Keyword(s):  
Inkjet Printing ◽  
Screen Printing ◽  
Quality Attributes ◽  
Gravure Printing ◽  
Printing Process ◽  
Color Quality ◽  
Study Results ◽  
Color Differences ◽  
Pet Film ◽  
Better Than

The In-Mold Roller is a revolutionary printing process by which objects are 3D decorated. Products decorated by In-Mold Roller are waterproof and protected from fading. What’s more, 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 potential usages of combining In-Mold Roller with digital UV inkjet printing in 3D decoration, e.g. in personalized printing services. Study results found that when the coverage and the resolution of inkjet printing become higher, the SIDs will become higher as well. When transferred to ABS, SIDs in each combination will increase. Each combination of inkjet conditions, with the isolation of white ink, color differences are less variant. TVIs of white ink decrease 30% to 40% halftone and display in “M” type. In print contrast, C and K colors of each combination are better than M and Y colors. After transferred into print contrast, each combination of PC will be higher about 2 to5. When transferred to ABS, color variances of each combination are not huge, and color differences are about 3to5.

A Study on Color Variance of IMR between PET Coated and Uncoated White Ink by UV Inkjet

2014 ◽  
Vol 1004-1005 ◽  
pp. 795-798
Author(s):  
Chang Lang Chen ◽  
Lihrong Chiou ◽  
Yu Tung Chang ◽  
Weichieh Hsu
Keyword(s):  
Inkjet Printing ◽  
Color Gamut ◽  
Irregular Surfaces ◽  
Study Results ◽  
Color Differences ◽  
Potential Use

IMR can print out excellent textures and effects on irregular surfaces. Many products decorated by IMR are protected from water and fading, and these kinds of decorations strongly increase beauty, desirability and value of the objects. Therefore, this research is to investigate the potential use of combining IMR with UV inkjet printing and to compare color variance of IMR between PET coated and uncoated white ink. Study results show that the SIDs of PET with white ink is higher about 0.15 to 0.2 than the PET without white ink. The SIDs of PET without white ink will decrease and the SIDs of the PET with white ink will increase when transferred. The PC of PET without white ink is about 10 to 15 higher than the PET with white ink. After transferred, the Color Gamut became smaller than before. Especially for the PET without white ink, its color differences △E can reach 40. In addition, the color gamut became smaller when transferred.

Aroma Finishing and Pigment Printing of Thai Silk Fabric by 1-Step All-In Printing Process

2020 ◽  
Vol 1005 ◽  
pp. 123-130
Author(s):  
Jantip Setthayanond ◽  
Phussadee Lim
Keyword(s):  
Screen Printing ◽  
Binder Content ◽  
Process Efficiency ◽  
Print Quality ◽  
Printing Process ◽  
Lemongrass Oil ◽  
Finishing Agent ◽  
Silk Fabrics ◽  
The Individual ◽  
Printing Processes

In this study, a combined aroma finishing and pigment printing process was investigated in order to develop 1-step, all-in aroma finishing/pigment printing process for Thai silk. Lemongrass oil microcapsules, an aroma finishing agent, was applied on silk by screen printing process and the properties of the printed fabrics were examined. Pigment printing was also performed individually by screen printing and the colorimetric properties of the print were measured. Binder content affected the print properties of both aroma microcapsules and pigment on silk. An appropriate binder content was chosen at 20 g/100 g print paste. The 1-step, all-in aroma finishing/pigment printing process was performed by printing both lemongrass oil microcapsules and pigment simultaneously on silk fabrics. The process efficiency was determined in two different aspects i.e. aroma finishing effect and coloring effect. Aroma finishing effect of the 1-step, all-in process was examined in comparison with the individual microcapsule print results while the coloring effect was compared between the printed fabric from 1-step, all-in process and the individual pigment printing. The results showed that the 1-step, all-in process could provide comparable aroma finishing effect and pigment print quality to the separated finishing and pigment printing processes.

scholarly journals The study of the screen printing quality depending on the surface to be printed

2018 ◽  
Vol 178 ◽  
pp. 03015
Author(s):  
Viorica Cazac ◽  
Jana Cîrja ◽  
Emilia Balan ◽  
Cristina Mohora
Keyword(s):  
Screen Printing ◽  
Printing Process ◽  
Printing Quality ◽  
Mesh Screen ◽  
Study Results ◽  
Different Types ◽  
Composition Structure ◽  
Screen Printed

This paper presents the study results regarding the analysis of the screen printing quality on different types of materials. The quality of the screen printing is determined by several particularities of the screen printing process such as: the type of mesh, screen ruling, ink viscosity, raster spacing, etc. The material which is supposed to be printed is as important as the particularities of the screen printing process itself. The composition, structure and features of the printed items as well as the composition, viscosity and other ink properties, all together determine the quality of the screen printed matter.

scholarly journals Preventive maintenance features specific to offset printing machines

2021 ◽  
Vol 343 ◽  
pp. 08012
Author(s):  
Emilia Bălan ◽  
Liviu Berculescu ◽  
Răzvan-George Răcheru ◽  
Dorin Vasile Piţigoi ◽  
Lucia Adăscăliţa
Keyword(s):  
Preventive Maintenance ◽  
Offset Printing ◽  
Printing Process ◽  
Machine Performance ◽  
Continuous Quality ◽  
Study Results ◽  
Maintenance Activities ◽  
Printing Processes

In the printing industry, where production never stops, it is very important to continuously maintain machine performance. If a machine breaks down, the production will stop and it will disturb the production process. Therefore, the maintenance system must be managed efficiently to solve those problems. The paper presents the study results on continuous quality improvement of offset printing using preventive maintenance features. Offset printing is a process that involves a multitude of variables, independent and interdependent factors. The offset printing process was analyzed and the factors that have a significant influence on the quality of the process and the products made were identified. The defects that may occur during the printing process and the causes thereof have also been identified and the types of non-conformities of the end products were estabilished. The experimental method was used. The case study was conducted on Manroland 508. For the planning of preventive maintenance activities, the duration of the maintenance works necessary to ensure the proper functioning of the offset printing machines was established. Finally, maintenance activities that would guarantee and continuously improve the quality of the printing processes and the printed products were issued.

Research on the Quality of Screen Printing Based on the UV Ink

2011 ◽  
Vol 380 ◽  
pp. 121-124 ◽  
Author(s):  
Gai Mei Zhang ◽  
Pu Jun Deng ◽  
Wen Cai Xu ◽  
Zhi Qiang Yu
Keyword(s):  
Screen Printing ◽  
Electronics Industry ◽  
Print Quality ◽  
Printing Process ◽  
Tone Reproduction ◽  
Dot Gain

With the development of the green inks, UV ink has been applicated wider and wider in the printing, packaging and the electronics industry. Based on the UV inks and screen printing process, this paper has investigated the influnce of mesh count, screen ruling, printing materials and ink viscosity on print quality by measuring the printing dot gain experimentally. The results show that the higher mesh count and more smooth printing material can induce the better dot, tone reproduction and higher printing precision. The more serious dot gain and the worse tone reproduction will induced by lower ink viscosity. The higher screen ruling cause the bigger dot gain value. Bigger rate of mesh count with screening ruling can reduce the moire phenomena.

Study about Influencing of Printing Process on Gravure Printing Ink Transfer

2013 ◽  
Vol 469 ◽  
pp. 301-304
Author(s):  
Pu Jun Deng ◽  
Wei Fang ◽  
Jian Dong Lu
Keyword(s):  
Quantitative Analysis ◽  
Process Conditions ◽  
Gravure Printing ◽  
Line Number ◽  
Printing Process ◽  
Ink Transfer ◽  
Printing Processes ◽  
Printing Ink ◽  
Influence Degree ◽  
Printing Speed

Abstract. Gravure printing has the characteristics including thick ink layer, bright and homochromatic color, rich and sharp tone, and strong stereoscopic impression. In the packaging-printing field, gravure printing gets more and more attentions. But in the region of gravure printing process, the study on gravure printing ink transfer is not as deep as offset print. Most researches just stay in the level of qualitative analysis, but the quantitative analysis researches are still insufficient. The factors which impact gravure printing ink transfer are not only the volume of engraving ink cell, but also printing process. In this paper, gravure printing ink transfer is analyzed quantitatively from the point of views of gravure printing pressure, printing speed, scraping blade pressure and ink viscosity. The following research has been done in this paper. Firstly, electronic engraving machine is used to engrave eight different area ink cells by 45° ink cell angle and 70lpc screen line number on the same gravure roller. Secondly, gravure proofing machine is used to make proofs in different process conditions. Thirdly, density meter is used to determine density of cell ink, and balance is used to determine the weight of ink which moves from the plate onto the paper. Finally, to analyze the influence of different printing processes on gravure printing ink transfer. The research results show that gravure printing ink transfer is influenced certainly by different printing processes. Printing process has a certain influence on the gravure printing ink transfer, and the influence degree of different dot area rate of cell is different. The doctor blade pressure and ink viscosity influence greatly gravure printing ink transfer.

Drops forming in inkjet printing of flexible electronic circuits

Circuit World ◽  
2017 ◽  
Vol 43 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Grzegorz Tomaszewski ◽  
Jerzy Potencki
Keyword(s):  
Inkjet Printing ◽  
Research Method ◽  
Design Methodology ◽  
Drop Formation ◽  
Print Quality ◽  
Electronic Circuits ◽  
Content Type ◽  
Printing Processes ◽  
Nanoparticle Ink ◽  
Practical Implications

Purpose This paper aims to study drop formation in piezoelectric industrial printheads during the inkjet printing processes. It presents how the piezoelectric printhead forms drops of nanoparticle ink and how the problems with different values of drop parameters may influence the printed pattern’ defects and quality. Design/methodology/approach A piezoelectric printhead with 128 nozzles was activated to operate in a controlled manner, and the droplets ejected from the nozzles were observed during falling and analysed in the printview system. The effect of varying the values of drop parameters on print quality and pattern defects has been analysed and discussed. Findings The obtained results allow the identification of the sources of the technological problems in obtaining repeatable performance drops with the desired properties, and indicate the importance of choosing the appropriate individually chosen strategy of controlling the printing for each individual application to get good-quality and free-from-defects patterns. Research limitations/implications Because of the chosen research method (arbitrary selected printhead type and ink manufacturer), this study could have limited universality. Authors encourage the study of other kinds of piezoelectric heads or other conductive inks. Practical implications This study includes practically useful applications for users to improve the inkjet print quality. Originality/value This study presents results of original empirical research works on problems of the drops forming in the inkjet printing process, and finally, it identifies problems that must be resolved to disseminate this technology.

Experimental Study of Digital Printing Methods for Producing Personalized Packaging

2012 ◽  
Vol 262 ◽  
pp. 217-222
Author(s):  
Ying Mei Zhou ◽  
Xiao Ying Rong ◽  
Zhong Min Jiang
Keyword(s):  
Experimental Study ◽  
Inkjet Printing ◽  
Consumer Products ◽  
Digital Printing ◽  
Print Quality ◽  
Color Gamut ◽  
Laser Printing ◽  
On Demand ◽  
Variable Data Printing

With the development of technologies in digital printing, variable data printing and on-demand printing for producing printing products with personalized information become more and more popular. The technologies make it possible to produce packaging for consumer products that contains personalized information that meets the special needs of individuals. There are two common approaches to produce personalized packaging. One approach is a hybrid process, which adds personalized information by inkjet printing or toner press onto the packaging that is printed primarily by traditional printing methods. This requires the digitally printed colors to match the colors printed by traditional printing methods. Another approach is to print the packaging completely by digital printing. Most commonly, toner-based laser printing is the first option for lower weighted paperboards. This approach is often limited by the print quality of laser printing. This study focused on experimental study on the quality of digital printing for producing personalized packaging. The parameters investigated are color gamut, resolution of lines and fonts. The print quality of digitally printed packaging was compared to traditional packaging producing methods, such as lithography printing, flexography printing, and gravure printing.

Influence of Constructive and Technological Parameters at Generated Spiral Parts with DLP 3D Printing Process

2019 ◽  
Vol 56 (4) ◽  
pp. 801-811
Author(s):  
Mircea Dorin Vasilescu
Keyword(s):  
3D Printing ◽  
Great Influence ◽  
Polymerization Process ◽  
Generation Process ◽  
Technological Parameters ◽  
Printing Process ◽  
The Third ◽  
Solid Models ◽  
Specific Factors ◽  
Printing Processes

This work are made for determine the possibility of generating the specific parts of a threaded assembly. If aspects of CAD generating specific elements was analysed over time in several works, the technological aspects of making components by printing processes 3D through optical polymerization process is less studied. Generating the threaded appeared as a necessity for the reconditioning technology or made components of the processing machines. To determine the technological aspects of 3D printing are arranged to achieve specific factors of the technological process, but also from the specific elements of a trapezoidal thread or spiral for translate granular material in supply process are determined experimentally. In the first part analyses the constructive generation process of a spiral element. In the second part are identified the specific aspects that can generation influence on the process of realization by 3D DLP printing of the two studied elements. The third part is affected to printing and determining the dimensions of the analysed components. We will determine the specific value that can influence the process of making them in rapport with printing process. The last part is affected by the conclusions. It can be noticed that both the orientation and the precision of generating solid models have a great influence on the made parts.

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