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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 4356254 B1

PDFFull Text
Date of Patent:
Oct. 26, 1982

Filed:

Jul. 07, 1980

Image-forming method using o-quinone diazide and basic carbonium dye

Applicant:
Inventors:

Yohnosuke Takahashi, Asaka, JP;

Hiromichi Tachikawa, Asaka, JP;

Fumiaki Shinozaki, Asaka, JP;

Tomoaki Ikeda, Asaka, JP;

Assignee:

Fuji Photo Film Co., Ltd., Kanagawa, JP;

Attorney:

Sughrue, Mion, Zinn, Macpeak & Seas

Primary Examiner:

Charles L Bowers

Int. Cl.
CPC ...
G03F / ; G03C / ;
U.S. Cl.
CPC ...
430296 ; 430-5 ; 430165 ; 430166 ; 430190 ; 430191 ; 430294 ; 430299 ; 430309 ; 430320 ; 430323 ; 430325 ; 430326 ; 430330 ; 430945 ;
Abstract

An image-forming method is described using a light-sensitive material comprising a support and a light-sensitive layer on the support, said light-sensitive layer containing an o-quinonediazide compound as a first component and a basic carbonium dye as a second component; according to this method images can be obtained both by positive working and negative working techniques. Furthermore, images which are free from yellow light fogging can be obtained by use of a laser beam.

Find Patent Forward Citations

Takahashi, Yohnosuke. (1982). Image-forming method using o-quinone diazide and basic carbonium dye (U.S. Patent No. 4356254). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4356254

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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