Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates
Reexamination Certificate
2008-03-25
2008-03-25
Schilling, Richard L. (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making printing plates
C430S278100, C430S281100, C430S285100
Reexamination Certificate
active
07348131
ABSTRACT:
A laser sensitive lithographic printing plate comprises an electrochemically grained, anodized, hydrophilically treated aluminum substrate with a reflection optical density of 0.30 or higher; a free radical polymerizable photosensitive layer; and a water soluble or dispersible overcoat. The photosensitive layer comprises a polymeric binder, a free radical polymerizable monomer, a free radical initiator, and a sensitizing dye. Such dark aluminum substrate in combination with the hydrophilic treatment allows both clean background and good printing durability. Such plate can be exposed with a suitable laser at lower dosage to cause hardening in the exposed areas. The exposed plate can be developed with a regular liquid developer or with ink and/or fountain solution.
REFERENCES:
patent: 5368974 (1994-11-01), Walls
patent: 5607816 (1997-03-01), Fitzgerald et al.
patent: 5738974 (1998-04-01), Nagasaka et al.
patent: 5910395 (1999-06-01), Li et al.
patent: 6014929 (2000-01-01), Teng
patent: 6136503 (2000-10-01), Zheng et al.
patent: 6153356 (2000-11-01), Urano et al.
patent: 6232038 (2001-05-01), Takasaki et al.
patent: 6309792 (2001-10-01), Hauck et al.
patent: 6331375 (2001-12-01), Kawamura et al.
patent: 6335144 (2002-01-01), Murota et al.
patent: 6482571 (2002-11-01), Teng
patent: 6541183 (2003-04-01), Teng
patent: 6558875 (2003-05-01), Toshimitsu et al.
patent: 6576401 (2003-06-01), Teng
patent: 6689537 (2004-02-01), Urano et al.
patent: 6740464 (2004-05-01), Maemoto
patent: 7213516 (2007-05-01), Teng
patent: 2002/0018962 (2002-02-01), Urano et al.
patent: 2003/0186165 (2003-10-01), Gries et al.
patent: 2003/0200886 (2003-10-01), Vermeersch et al.
patent: 2004/0013968 (2004-01-01), Teng
patent: 2006/0269873 (2006-11-01), Knight et al.
patent: 2007/0184380 (2007-08-01), Tao et al.
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