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:
Sep. 05, 2000
Filed:
Dec. 17, 1996
Ken Hosaka, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In order to provide a recording apparatus having higher reliability with a low cost and simple construction, a rank heater representative of the characteristics of the recording head is provided, the driving condition therefor is established based on the resistance value of the rank heater, any erroneous mounting of the head is detected by the resistance value, and the recording control is modified by identifying the type of the mounted head. The resistance range exhibited by the rank heater is set different according to the type of the head, so that the different recording heads would not exhibit the same resistance value as each other. The resistance value is detected at the side of the apparatus, being detected whether the recording head is suited for the apparatus. In an apparatus in which a plurality of types of interchangeable heads are used, the invention is effective not only for detection of the head type, but also for detection of characteristics of the recording head.