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:
Oct. 18, 1977
Filed:
Jun. 27, 1974
Applicant:
Inventors:
Bauke Schoustra, Tegelen, NL;
Hubertus W Roncken, Helden, NL;
Assignee:
Oce-van der Grinten N.V., Venlo, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
96 / ; 96-16 ;
Abstract
Fading of the light-sensitivity of a dye-sensitized photoconductive layer used repeatedly for image formation in indirect electrophotographic copying is avoided by employing a photoconductive layer sensitized by a nitro-substituted dye such as a nitro-fluorescein or a nitro-phenolsulfonephthalein.