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:
Jul. 06, 1993
Filed:
Oct. 24, 1991
Applicant:
Inventors:
Lorin K Hansen, Fremont, CA (US);
Stephen D White, Santa Clara, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346155 ; 3461 / ;
Abstract
An apparatus for selectively setting the distance between the write head of an electrographic printing apparatus and a recording medium in combination with the use of a gas, present in the gap between the medium and the write head whereby the gas has a Paschen curve minimum lower than the Paschen curve for air. The combination of increasing the distance of the head from the medium along with the use of a gas as specified decreases the amount of flare while decreasing dropout and maintaining image density.