公开(公告)号：CA2842417A1

公开(公告)日：2013-02-14

申请号：CA2842417

申请日：2012-07-18

Applicant: MACDERMID PRINTING SOLUTIONS

Inventor： VEST RYAN W ,  RECCHIA DAVID A ,  GOTSISK TIMOTHY

IPC: G03F7/20

Abstract: A method of tailoring the shape of a plurality of relief dots created in a photosensitive printing blank during a digital platemaking process is provided. The photosensitive printing blank comprises a laser ablatable mask layer disposed on at least one phoiocisrahle layer which is mountab!e on a printing sleeve. The method comprises the steps of (1) placing a barrier layer on top of the laser ablatable mask layer; (2) laser ablating the laser ablatable mask layer to create an in situ negative in the laser ablatable layer; (3) exposing the at least one photocurable layer to actinic radiation through the in situ negative; (4) removing the barrier layer; and (5) developing the imaged and exposed photosensitive printing blank to reveal the relief image therein, the relief image comprising the plurality of relief dots. The presence of the barrier layer produces printing dots having desired geometric characteristics.

公开(公告)号：EP2742386A4

公开(公告)日：2014-12-31

申请号：EP12821508

申请日：2012-07-18

Applicant: MACDERMID PRINTING SOLUTIONS

Inventor： VEST RYAN W ,  RECCHIA DAVID A ,  GOTSISK TIMOTHY

IPC: G03F7/20 ,  G03F7/09 ,  G03F7/34

CPC classification number: G03F7/20 ,  G03F7/092 ,  G03F7/202 ,  G03F7/34

Abstract: A method of tailoring the shape of a plurality of relief dots created in a photosensitive printing blank during a digital platemaking process is provided. The photosensitive printing blank comprises a laser ablatable mask layer disposed on at least one photocurable layer which is mountable on a printing sleeve. The method comprises the steps of (1) laser ablating the laser ablatable mask layer to create an in situ negative in the laser ablatable layer; (2) placing a barrier layer on top of the laser ablatable mask layer; (3) exposing the at least one photocurable layer to actinic radiation through the barrier layer and the in situ negative; (4) removing the barrier layer; and (5) developing the imaged and exposed photosensitive printing blank to reveal the relief image therein, the relief image comprising the plurality of relief dots. The presence of the barrier layer produces printing dots having desired geometric characteristics.