Rollers must be installed with bearings or accessories before use. Some accessories may require complex assembly and specialized tools. It is advisable to allocate an additional day for processing when purchasing rollers and request the manufacturer to assemble the accessories. This will ensure ease of use and efficiency during operation! Simple bearing installation can be […]
Month: April 2024
Detailed analysis of the main technical parameters of flexographic water-based ink:
Composition of Water-based Ink: Water-based ink is composed of water-based high molecular resin and emulsion, organic pigments, water-soluble solvents, and related additives through physical and chemical processes, without volatile organic solvents, and without certain toxic or harmful substances found in solvent-based inks. Viscosity: Viscosity is the magnitude of the cohesive force within the ink and […]
6 Points to Clarify in Post-Printing Hardcover Binding Techniques
To ensure harmony between printing and post-printing processing, meticulous design and arrangement of printing activities are essential from the outset. Several points require attention during production. Here is a brief discussion for reference purposes only. Folding Since the ink pigments on digital prints only adhere to the surface of the paper, folding processes are prone […]
Five Key Standards for Assessing Printing Ink Quality
Drying Speed The drying speed of ink typically affects printing quality and can lead to various printing issues, such as causing dirty backsides of prints or even hindering the smooth progress of web printing. Users commonly express that the drying speed of domestic ink significantly impacts print quality. Issues such as the occurrence of defective […]
The Difference between Spot Color Printing and Four-Color Printing
Four-color printing generally refers to the printing process of reproducing various colors of original manuscripts using yellow, magenta, cyan, and black inks. Spot color printing, on the other hand, refers to the printing process of reproducing the colors of the original manuscript using inks other than the four-color inks mentioned above. Spot color printing is […]
Eight Key Points for Saving and Controlling in Gravure Printing Production
1. Layout Design During the layout design process, strive for the highest quality printing results with the simplest and most rational design. (1) For color marks, cutting marks, bag making marks, dot signal bars, and other indicators, use smaller sizes and reasonable colors to reduce the process loss of the substrate. (2) Reduce the use […]
What to Do When Offset Printing Encounters Ghosting and Ink Bars?
When using offset printing machines, issues such as ghosting and ink bars often arise. Here, we will analyze the causes of these problems and provide solutions for readers’ reference. Paper Tape Tension Paper tape tension is a crucial factor in ensuring print quality on offset printing machines. Inappropriate tension can lead to unstable paper tape […]
What to Do When Coated Whiteboard Paper Turns Yellow?
The phenomenon of yellowing in coated whiteboard paper refers to a decrease in whiteness after a certain period of storage or exposure to sunlight. Research on the yellowing phenomenon of coated whiteboard paper and its mechanisms, as well as identifying various factors causing yellowing and measures to stabilize whiteness, has been receiving increasing attention. This […]
Practical Tips for Ink Changing and Cleaning
During the offset printing process, especially in monochrome offset printers, whether it’s the Y, M, C, BK four-color printing or for trademarks, packaging decoration, ink changing and cleaning are often required, which involves cleaning the entire ink delivery system of the offset printer and then replacing it with fresh ink. The ink washing device consists […]
How to Judge Color Distortion in Printed Materials with the Naked Eye
So, how can you determine if colors are distorted? Here are three major benchmark methods summarized by industry professionals: 1. First Impression Benchmark Method The human eye has a certain adaptability to colors. For images with slight color distortion, repeated observation can weaken the ability to recognize it. Therefore, when judging the presence of color […]