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:
Mar. 10, 1987
Filed:
Mar. 07, 1986
Applicant:
Inventors:
George G Lunde, Fridley, MN (US);
Earl K Hoyne, Fridley, MN (US);
Charles K Nordeen, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461531 ; 346150 ;
Abstract
An electrographic stylus recording apparatus producing a toner powder image on a receptor belt wherein non-imaging toner powder is collected at a cylindrical sleeve located downstream from the stylus array and is subsequently returned from the cylindrical sleeve to the upstream side of the stylus array by depositing toner powder from the cylindrical sleeve onto the receptor belt by adjustment of the toner powder on the cylindrical sleeve relative to the space between the cylindrical sleeve plus the application of a d.c. voltage to the cylindrical sleeve.