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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.:

US 4646112 B1

PDFFull Text
Date of Patent:
Feb. 24, 1987

Filed:

Mar. 07, 1986

Electrographic stylus recording apparatus

Applicant:
Inventors:

Earl K Hoyne, Fridley, MN (US);

Charles K Nordeen, St. Paul, MN (US);

James D Young, Cazenovia, NY (US);

Assignee:

Minnesota Mining and Manufacturing Company, St. Paul, MN (US);

Attorneys:

Sell; Donald M.

Smith; James A.

Marben; Robert L.

Primary Examiner:

Arthur G Evans

Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461531 ; 346150 ;
Abstract

Electrographic stylus recording apparatus for producing a magnetically attractable toner powder image on a receptor belt including two rotatable cylindrical sleeves, each having a non-rotatable magnetic roll, with one sleeve positioned adjacent the upstream side of a stylus array and the other sleeve adjacent the downstream side with each of such sleeves adapted for connection to a d.c. source, the upstream sleeve being connected to a d.c. source to place toner powder on the receptor belt for delivery of toner powder to the stylus array when a toner image is to be made and the downstream sleeve being connected to a d.c. source to place toner powder on the receptor belt from such sleeve for return to the upstream side of the stylus array via the receptor belt. The magnet rolls within the sleeves are positioned to provide like magnetic poles to the stylus array to provide a magnetic flux at the recording ends of the styli in the array. Each of the magnetic rolls also provide a magnetic pole to the receptor belt at the point where the sleeves are closest to the receptor belt.

Find Patent Forward Citations

Hoyne, Earl. (1987). Electrographic stylus recording apparatus (U.S. Patent No. 4646112). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4646112

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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