公开(公告)号：CA2825465C

公开(公告)日：2017-05-23

申请号：CA2825465

申请日：2012-01-11

Applicant: MACDERMID PRINTING SOLUTIONS LLC

Inventor： RECCHIA DAVID A ,  BLAIR JOSEPH H ,  VEST RYAN W

IPC: G03F7/26

Abstract: Thermally developing a photocurable printing blank to produce a relief pattern comprising a plurality of relief dots. The photocurable printing blank comprises a backing layer having at least one photocurable layer disposed thereon and a laser ablatable mask layer disposed on top of the at least one photocurable layer. The method includes: (1 ) imaging a photo curable layer by ablating the mask layer to create the relief pattern; (2) laminating an oxygen barrier membrane atop the ablated mask layer; (3) exposing the printing blank to actinic radiation through the oxygen barrier membrane and ablated mask layer to selectively crosslink and cure portions of the photocurable layer, thereby creating the relief pattern; (4) removing the oxygen barrier membrane from atop the ablated mask layer; and (5) thermally developing the printing blank to remove the ablated mask layer and uncured portions of the photo curable layer and reveal the relief pattern.

公开(公告)号：CA2881616C

公开(公告)日：2017-05-23

申请号：CA2881616

申请日：2012-01-11

Applicant: MACDERMID PRINTING SOLUTIONS LLC

Inventor： RECCHIA DAVID A ,  BLAIR JOSEPH H ,  VEST RYAN W

IPC: G03F7/00

Abstract: A method of thermally developing a photocurable printing blank to produce a relief pattern comprising a plurality of relief dots. The photocurable printing blank comprises a backing layer having at least one photocurable layer disposed thereon and a laser ablatable mask layer disposed on top of the at least one photocurable layer. The method includes the steps of (1) imaging the at least one photocurable layer by ablating the laser ablatable mask layer to create the relief pattern on the surface of the at least one photocurable layer; (2) laminating an oxygen barrier membrane to a top of the laser ablated mask layer; (3) exposing the printing blank to actinic radiation through the oxygen barrier membrane and mask layer to one or more sources of actinic radiation to selectively crosslink and cure portions of the at least one photocurable layer, wherein the at least one photocurable layer is crosslinked and cured in the portions not covered by the mask layer, thereby creating the relief pattern; (4) removing the oxygen barrier membrane from the top of the laser ablated mask layer; and (5) thermally developing the printing blank to remove the laser ablated mask layer and uncured portions of the photocurable layer and reveal the relief pattern. The presence of the oxygen barrier membrane produces printing dots having desired characteristics. The method can also be used with an analog platemaking process that uses a negative instead of an ablatable mask layer, or, in the alternative, the negative itself can be used as the oxygen barrier layer.

公开(公告)号：CA2842417C

公开(公告)日：2016-07-05

申请号：CA2842417

申请日：2012-07-18

Applicant: MACDERMID PRINTING SOLUTIONS LLC

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

IPC: G03F7/00

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：CA2830267C

公开(公告)日：2016-05-17

申请号：CA2830267

申请日：2012-03-20

Applicant: MACDERMID PRINTING SOLUTIONS LLC

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

IPC: G03F7/00 ,  G03F7/14 ,  G03F7/36

Abstract: A photocurable printing blank comprises a backing layer having a photocurable layer disposed thereon, a barrier layer disposed on the photocurable layer, and a laser ablatable mask layer disposed on top of the barrier layer. The method includes the steps of (1 ) imaging the at least one photo curable layer by ablating the laser ablatable mask layer to create the relief pattern on the photocurable printing blank; (2) exposing the printing blank to actinic radiation through the barrier layer and mask layer to selectively crosslink portions of the photocurable layer, thereby creating the relief pattern; (3) developing the printing blank to remove the barrier layer, the laser ablated mask layer and uncured portions of the photo curable layer and reveal the relief pattern. The method can also be used with an analog platemaking process that uses a negative instead of an ablatable mask layer.