公开(公告)号：EP1493059A1

公开(公告)日：2005-01-05

申请号：EP03719562.5

申请日：2003-04-03

申请人： Kodak Polychrome Graphics LLC

发明人： RAY, Kevin ,  RAY, Joanne

IPC分类号： G03F7/11 ,  B41C1/10

CPC分类号： B41C1/1016 ,  B41C2201/04 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/24 ,  G03F7/11

摘要： Multi-layer, negative working imageable elements useful as lithographic printing plate precursors are disclosed. The elements contain, in order, a support; an underlayer; and an imageable layer. The imageable layer comprises a negative working imageable composition; and the underlayer is soluble or dispersible in a developer. Elements that can be imaged with ultraviolet or visible radiation and elements that can be imaged with infrared radiation or with heat are disclosed.

公开(公告)号：EP1663645A1

公开(公告)日：2006-06-07

申请号：EP04788590.0

申请日：2004-09-07

申请人： Kodak Polychrome Graphics, LLC

发明人： RAY, Kevin ,  HUANG, Jianbing ,  RAY, Joanne

IPC分类号： B41C1/10

CPC分类号： B41N3/08 ,  B41C1/10 ,  B41C1/1008 ,  B41C2210/02 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/262 ,  B41N3/006

摘要： A method for forming a printing plate from a printing plate precursor having a radiation-sensitive layer, sensitive to radiation in a first frequency region such as the far or near infrared, and to radiation in a second frequency region other than the first frequency region such as visible or ultraviolet. The plate is exposed twice. Once to imaging radiation in the first frequency region and again to radiation in the second frequency region. The second frequency region exposure is done only to the areas of the plate undesirably shaded during the imagewise exposure.