Liquid transfer between two separating plates for micro-gravure-offset printing
نویسندگان
چکیده
Experimental investigations of the liquid transfer between two separating plates have been carried out, with the aim of increasing the ink transfer ratio in micro-gravure-offset printing. A sessile droplet is divided into two by moving one plate vertically with respect to a fixed plate. The surface contact angles of the sessile droplet on the two plates were of particular interest in this study because the volume ratio of the two droplets varies with the contact angles. Various methods for controlling the surface contact angle, including chemical treatment, plasma surface modification and electrowetting-on-dielectric were assessed. Image analysis of the droplets was carried out to estimate the surface contact angles and to measure the volumes of the droplets. The liquid transfer process and related phenomena, such as satellite droplet generation and the variation in the contact areas between the droplets and the plates, were observed. The experimental results help us to determine the optimal surface contact angles of the plate cylinder, blanket cylinder and substrate for micro-gravure-offset printing.
منابع مشابه
Visualization and Simulation of the Transfer Process of IndexMatched Silica Microparticle Inks for Gravure Printing
A combined experimental and computational study of the transfer of transparent index-matched silica-particle inks between two flat plates is presented for gravure printing applications. The influence of printing speed and initial ink droplet size on the ability to accurately transfer ink during the printing process is explored systematically. Smooth interface volume of fluid simulations show th...
متن کاملUltrafast Laser Engraving Method to Fabricate Gravure Plate for Printed Metal-Mesh Touch Panel
In order to engrave gravure plate with fine lines structures, conventional art used lithography with dry/wet etching. Lithography with dry/wet etching method allows to engrave lines with smooth concave shape, but its disadvantages include difficulty in controlling aspect ratio, high and uniform in large size process, substrate material limitation due to etching solution availability, and proces...
متن کاملPrinted two-dimensional micro-zone plates for chemical analysis and ELISA.
In this study we report a new concept of printing low-cost two-dimensional micro-zone plates for chemical and biochemical assays and ELISA. It is different from the concept of forming multi-zone micro-zones on paper by hydrophobic barriers first reported by Yagoda. Instead, the desired multi-zone micro-zone pattern was first printed using a UV-curable varnish onto a polymer film; then fine powd...
متن کاملModeling and Applications of Highly-Scaled Gravure Printing
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission....
متن کاملMajor Trends in Gravure Printed Electronics
Printing has become a mature industry, forcing printers to create new applications for their manufacturing process. One such application is printed electronics. The gravure printing process allows for incredible speed and exceptional quality for traditional graphic printing. Theoretically, this would be an ideal method for the commercial production of printed electronics. This study analyzes gr...
متن کامل