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.

Patent No.:

US 6830874 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 14, 2004

Filed:

Jul. 03, 2002
Applicant:
Inventors:

Shun-ichi Kondo, Shizuoka-Ken, JP;

Yuichi Shiraishi, Shizuoka-Ken, JP;

Assignee:

Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/11 ; G03F 7/32 ;
U.S. Cl.
CPC ...
G03F 7/11 ; G03F 7/32 ;
Abstract

A method for preparing a lithographic printing plate which comprises imagewise exposing to light a presensitized plate useful for making a lithographic printing plate having an intermediate layer and a photosensitive layer on an aluminum substrate in this order and developing the imagewise exposed plate with a developer, wherein said intermediate layer comprises a polymer compound comprising at least a structure unit having an acid group and a structure unit having an onium group and said developer comprises an inorganic alkali salt and a nonionic surfactant having polyoxyalkylene ether group and pH of the developer ranges from 11.0 to 12.7. The method provides a lithographic printing plate, which shows good contrast between an image area and non-image area, no background contamination during printing, good stability with time and good printing durability.


Find Patent Forward Citations

Kondo, Shun-ichi. (2004). Method for making lithographic printing plate (U.S. Patent No. 6830874). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6830874

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