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:
Feb. 07, 1989
Filed:
Nov. 27, 1987
Applicant:
Inventor:
Edward F Mayer, Cromwell, CT (US);
Assignee:
Ricoh Corporation, San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346159 ; 31511181 ;
Abstract
An electrostatic charging system that incorporates a thermally activated glow discharge ion generating technique. An large AC potential is applied between a pair of spaced apart electrodes. A heater disposed near the electrode pair gap is selectively activated to heat the gases in the region of gap to induce ionization. A DC potential applied to a third electrode draws the ionized particles toward a dielectric material to place an electrostatic charge thereon.