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:
Jan. 12, 1988
Filed:
May. 09, 1986
Applicant:
Inventors:
Hsing C Tuan, Palo Alto, CA (US);
Malcolm J Thompson, Palo Alto, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; G01D / ;
U.S. Cl.
CPC ...
346159 ; 346 / ; 346155 ; 346 75 ;
Abstract
A thin film writing head for recording information upon a record medium by means of a continuous writing process. The writing head comprises thin film elements including marking elements, high and low voltage bus lines, driver circuitry, and switching elements, integrally fabricated upon a large area substrate. A latching circuit, including at least one of the switching elements is located between the pair of bus lines for connecting the marking elements directly to one of the bus lines, so as to insure that the marking elements are always connected to a source of reference potential.