The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 10, 2011

Filed:

Dec. 06, 2005
Applicants:

Akihiro Endo, Shizuoka, JP;

Sumiaki Yamasaki, Shizuoka, JP;

Seiji Uno, Shizuoka, JP;

Inventors:

Akihiro Endo, Shizuoka, JP;

Sumiaki Yamasaki, Shizuoka, JP;

Seiji Uno, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C 1/00 (2006.01); G03F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A lithographic printing plate precursor is provided and has a porous aluminum support, (1) a layer containing a water-soluble polymer resin having a hydrophilic substituent adsorbable to a surface of the porous aluminum support and a sulfonic acid, and (2) an image recording layer from which unexposed areas can be removed by supplying an oil-based ink and an aqueous component thereonto on a printing machine without being subjected to development after exposure. The layer containing the water-soluble polymer resin, which has come in contact with the oil-based ink and the aqueous component, has a sulfonic acid group left therein.


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