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:
Apr. 12, 1988
Filed:
Sep. 11, 1986
Applicant:
Inventors:
Richard L Weisfield, Menlo Park, CA (US);
Hsing C Tuan, Palo Alto, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346159 ; 3461 / ;
Abstract
An ionographic marking apparatus capable of multifunction operation for use as an input printer, a document copier or a document scanner. The apparatus includes a writing head comprising thin film elements including ion modulating electrodes, data and address lines, and self-biasing amplification circuits including thin film transistors, resistors and photosensors integrally fabricated upon a large area substrate.