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.:
Date of Patent:
Jan. 18, 1977
Filed:
Sep. 04, 1975
Takahiro Tsunoda, Funabashi, JA;
Minoru Ozutsumi, Tokyo, JA;
Shigeo Maeda, Tokyo, JA;
Susumu Suzuka, Tokyo, JA;
Hidetoshi Komiya, Tokyo, JA;
Hodogaya Chemical Co., Ltd., Tokyo, JA;
Oji Paper Co., Ltd., Tokyo, JA;
Abstract
A photosensitive color-forming element comprises a support and a photosensitive color-forming layer carried on the support and containing therein a color-forming coupler, for example, 1-naphthol, 2-naphthol and 2,4-dichloro-1-naphthol, and a photosensitive azido compound of the formula (I) or (II): ##STR1## wherein R.sub.1 represents a hydrogen or halogen atom or an alkyl, alkoxyl, diethylamino or hydroxyl radical R.sub. 2 an alkyl, alkoxyl or hydroxyl radical, and R.sub.3 a hydrogen atom or an alkyl or phenyl radical, and, if necessary, a polymeric material capable of hardening or being insolubilized in solvent when the polymeric material is exposed to radiation rays in the presence of the above azido compound, the above-mentioned azido compound and color-forming coupler being capable of forming a dark color upon exposure to radiation rays, without a color-developing agent.