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:
Jun. 13, 1989
Filed:
Jan. 25, 1988
Applicant:
Inventors:
Takayoshi Hanagata, Yamato, JP;
Shigemitsu Tazaki, Matsudo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B41J / ; B65H / ;
U.S. Cl.
CPC ...
346136 ; 346 / ; 3461 / ; 226-3 ; 226 27 ; 271227 ; 242 571 ; 400579 ; 364900 ; 364519 ;
Abstract
In a recorder, at least one set of marks spaced by a predetermined distance in a feed direction of a record paper are recorded on the record paper, the marks are detected by a detector while the record paper is fed, a time interval between detections of the marks is compared with a reference number of pulses applied to paper feed motors to detect a deviation, and rotations of the left and right paper feed motors are controlled to control the feed of record medium.