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:
Jan. 27, 1998
Filed:
Jul. 27, 1995
Applicant:
Inventors:
Yuichi Kaneko, Yokohama, JP;
Jun-ichi Arakawa, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
400 74 ; 400175 ; 347 19 ;
Abstract
In a printing apparatus of the type in which a printing head is detachable to a carriage, a detecting circuit is provided for detecting whether or not a printing head 8 is mounted on a carriage. A CPU 2 included in the printing apparatus supervises the output of the detecting circuit at every predetermined time interval. When determined the printing head 8 is not mounted, the supplement of the driving voltage for the printing head 8 is suspended.