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:
Jul. 28, 1992
Filed:
Jun. 28, 1990
Yoshihiko Eto, Hachioji, JP;
Yoshiaki Takei, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
The improved photoreceptor has a light-sensitive layer that contains as carrier generation materials both a polycylic quinone compound selected from among specified anthanthrone pigments, dibenzpyrene pigments and pyranthrone pigments and a specified bisazo pigment, and that also contains a specified stilbene compound as a carrier transport material. This photoreceptor has good spectral sensitivity characteristics over a broad range of wavelengths, has high sensitivity, has a long cycle life on account of reduced residual potential, is adapted for fast copying processes, and is capable of copying red images with improved fidelity of reproduction.