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. 28, 1995
Filed:
Jul. 29, 1991
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 37 ; 347 20 ; 347 39 ;
Abstract
In a serial recording apparatus wherein a recording head is carried on a carriage movable in the direction of a print column and the recording head is driven on the basis of printing data while scanning by the recording head, to thereby form a dot image on a sheet, piezoelectric elements are joined to a vibration plate provided on the underside of the carriage and the vibration plate is slidably urged against the surface of a fixed member by a resilient force to thereby constitute a travelling wave type ultrasonic motor. A travelling wave is generated in the vibration plate by the piezoelectric elements being driven to thereby control the movement of the carriage.