Cp 15 Flexographic Ink-jet and Digital Presses Prof

Cp. 15 Flexographic, Ink-jet, and Digital Presses Prof. Dr. Cao Congjun Xi’an university of technology

Objects o o o Major components of a flexographic press Function of an anilox roll Flexographic inking systems Flexographic plates making The operating principles of a continuous imaging press and a drop-demand inkjet printer

o o o Explain the terms direct imaging press and digital toner-based printing and operating principles of the both printing systems. Explain the operating principles of a digital press. Outline the advantages digital printing has over every traditional printing method.

Application: 标签/商标

塑料软包装

Cardboard卡纸

胶印/凹印/柔印

15. 1 Flexographic Printing Concept-P 354 o Components of a flexographic press ※Infeed unit ※Printing unit: o Three-roller inking system and tworoller inking system ※Outfeed unit

机组式柔性版印刷生产线 放卷机组 印刷机组 驱动机组 印后加 机组 收卷机组

15. 1. 1 Flexographic Plates Rubber plates o Photopolymer plates ※Sheet photopolymer plates ※ Liquid photopolymer plates o

Steps

15. 1. 2 Flexographic Press o o o The stack press Central impression press In-line press 柔性版印刷机 层叠式柔性版 印刷机 卫星式柔性版 印刷机 机组式柔性版 印刷机

15. 2 Ink-jet printing-P 366 o o o Continuous Ink-jet Technology Drop-on. Demand Systems Ink-jet Applications

Functioning principles for ink jet technologies Fig. a Continuous ink jet b Drop on demand ink jet/thermal ink jet;

c Drop on demand ink jet/piezo ink jet; d Electrostatic ink jet

Digital Printing-P 370 Direct imaging presses ※Advantages ※Plate Exposure o Digital toner based printing ※Press Configuration o Implications of Direct Digital Presses o

DI press-Plate Exposure Fig. Quickmaster DI computer to press/direct imaging system for multicolor printing in waterless offset (QM DI 46 -4, Heidelberg)

Digital Toner Based Printing Fig. Computer to print system for multicolor printing (electrophotography, ROS laser imaging, liquid toner, intermediate cylinder) with the option of sheet turning for double-sided (duplex) printing (E-Print 1000/Turbo. Stream, Indigo)

Fig. Electrophotographic multicolor printing system with liquid toner (Turbo. Stream (33 A 4 pages/min), Indigo; diagram derived from company information, not confirmed)

Homework o o P 376 Review questions 1, 2, 6, 7, 8, 9, 12