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:
May. 07, 1991
Filed:
Nov. 13, 1989
Applicant:
Inventors:
Wendell J Caley, Jr, Quincy, MA (US);
William R Buchan, Pocasset, MA (US);
Robert A Moore, Waquoit, MA (US);
Assignee:
Delphax Systems, Randolph, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346159 ; 400119 ;
Abstract
An electrode array forms a latent image by generating an electrical breakdown region and extracting an imagewise distribution of charge carriers which are accelerated toward a separate surface. Different control mechanisms, environments and ranges of operating parameters provide controlled amounts of charge delivered by electrons or ions for improved latent image production. High speed, high resolution and high uniformity of charge deposition are accomplished by different structures within the scope of the invention.