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:
Aug. 25, 1981
Filed:
May. 28, 1980
Hideyo Nishizima, Numazu, JP;
Hideaki Ema, Numazu, JP;
Hiroshi Tamura, Fujisawa, JP;
Hideki Akiyoshi, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic photoconductor comprising an electroconductive base and a photosensitive layer formed thereon, the photosensitive layer comprising a selenium-tellurium alloy with a concentration of tellurium in the range of 5 to 20 wt. % and halogen, with a concentration in the range of 5 to 500 ppm, selected from the group consisting of fluorine, chlorine, bromine and iodine, in the photosensitive layer, with the concentration of tellurium substantially uniform or increasing in the direction toward the surface of the photosensitive layer and the ratio of the concentration of tellurium near the electroconductive base to the concentration of tellurium near the surface of said photosensitive layer being 65 or more:100.