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. 19, 1977
Filed:
Mar. 30, 1976
Applicant:
Inventors:
Edwin R Phillips, Rosemont, PA (US);
Raymond J Stankiewicz, Philadelphia, PA (US);
Assignee:
Sperry Rand Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
118651 ; 118653 ; 355 / ;
Abstract
To develop a latent image, which exists in the form of different potential values on different areas of a substrate, an auxiliary substrate is coated with toner by charging the toner triboelectrically and applying a potential to propel the charged toner onto the auxiliary substrate. This toner-coated substrate is brought into close proximity with the image forming substrate, while being maintained at a potential which lies between the different potential values of the latent image.