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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 4659644 B1

PDFFull Text
Date of Patent:
Apr. 21, 1987

Filed:

Dec. 19, 1984

Diazo-type thermosensitive recording material with hydrazone coupler and

Applicant:
Inventors:

Takayuki Hoshina, Fuji, JP;

Michihisa Takahashi, Tachikawa, JP;

Masanori Rimoto, Mishima, JP;

Masanaka Nagamoto, Shizuoka, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:

Oblon, Fisher, Spivak, McClelland & Maier

Primary Examiner:

Charles L Bowers, Jr

Int. Cl.
CPC ...
G03C / ; G01D / ; B41M / ;
U.S. Cl.
CPC ...
430182 ; 430151 ; 430176 ; 430178 ; 430179 ; 430340 ; 430341 ; 430343 ; 430346 ; 346210 ; 346211 ; 346212 ; 346218 ;
Abstract

A diazo-type thermosensitive recording material is disclosed, which comprises a support material and a thermosensitive coloring layer formed on the support material, which thermosensitive coloring layer comprises a diazonium compound, a coupler and a thermo-fusible or thermo-softening material, the coupler being a combination of a hydrazone-type coupler of the formula of R.sup.1 --NH--N.dbd.CH--R.sup.2 (wherein R.sup.1 and R.sup.2 are defined in detail in the specification) and a two-valence metal compound capable of chelating with the coupled product produced by the coupling of the diazonium compound and the hydrazone-type coupler.

Find Patent Forward Citations

Hoshina, Takayuki. (1987). Diazo-type thermosensitive recording material with hydrazone coupler and (U.S. Patent No. 4659644). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4659644

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

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