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:
Sep. 23, 1980
Filed:
Sep. 27, 1978
Mutsuo Takenouchi, Ebina, JP;
Takashi Ozawa, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An original document reading apparatus has a photocathode on which an image of an original document is focused. An array of secondary electron multipliers are arranged for multiplying the photoelectrons emitted from the photocathode. A plurality of anodes face the secondary electron multipliers, and capacitors are connected between the respective anodes and ground. A common load resistor is connected to the respective anodes through series circuits each including two electronic switch arrays. A scanning circuit is used for opening and closing the series connected switches to sequentially connect the common load resistor to the anodes to scan them. An amplifier circuit is used for amplifying the output which is generated in the common load resistor. The first of the electronic switch arrays are separated into n groups so that control is effected for every group and the drain terminals of the corresponding first described switches in the groups are commonly connected to the source terminals of the second electronic switch array thereby reducing the required number of the electronic switches.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile