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. 10, 1997
Filed:
Oct. 04, 1993
Yoshiaki Takayanagi, Yokohama, JP;
Asao Saito, Yokohama, JP;
Ryoichi Koizumi, Yokohama, JP;
Hirokazu Ikeda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A recording apparatus has a recording operation that is performed after a disposable liquid ejection recording head is mounted. The discrimination is made as to whether the recording head mounted is proper or not relative to the main assembly to which the recording head is mounted, when the main switch is actuated or the recording head is mounted. The discrimination is made with use of a part of a structure in the recording head: a temperature sensor, a temperature keeping heater, an ejection heater or a driving semiconductor function element, for example. If it is not proper, the recording operation is prevented, and/or the improperness is displayed.