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:
Feb. 28, 1984
Filed:
May. 15, 1981
Mary J Wegener, San Jose, CA (US);
Morris Feinleib, Mountain View, CA (US);
Benson, Inc., San Jose, CA (US);
Abstract
A photoconductor material having high sensitivity to infrared light is provided therefore making it suitable for use in laser printers. The photoconductor of this invention has a dark decay of approximately 40 volts/second, thereby enhancing the use of this invention with infrared laser printers as compared to prior art infrared sensitive photoconductors. The photoconductor of this invention comprises cadmium sulfide (CdS), cadmium selenide (CdSe), cadmium carbonate (CdCO.sub.3) and cadmium oxide (CdO) in a binder, and preferably also includes a small amount of copper dopant. The photoconductor of this invention is prepared by adding ammonia to a suspension of cadmium sulfide/cadmium carbonate in water and then adding hydrogen selenide to this suspended solution. The ammonia provides a means for retaining the selenide in the solution for an increased period, thus allowing the selenide to remain in the solution for a time sufficient to allow the selenide to react with the small amount of cadmium ion in solution at any time, thereby providing a suspension of intimately mixed CdSCdSeCdCO.sub.3 crystallites.