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. 09, 1991
Filed:
Feb. 15, 1990
Applicant:
Inventors:
William J Hanson, Carlsbad, CA (US);
Richard I Love, Oceanside, CA (US);
Gerard L Kappenman, Montrose, SD (US);
Assignee:
AcuPrint, Inc., Carlsbad, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; G03G / ;
U.S. Cl.
CPC ...
346160 ; 355260 ;
Abstract
Magnetic signal level control apparatus for a printer or copier. A continuous sampling of the magnetic characteristics of a reference mark results in constantly adjusting to maintain the specified quality of magnetically readable characters on printed documents. A controller generates a signal which is applied to the developer of the printer to control application of magnetic ink or toner to the photoconductor and consequently to the paper. The invention also includes the method for controlling magnetic signal level.