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:
Dec. 18, 2001
Filed:
Feb. 19, 1999
Hisashi Yoshimura, Nara, JP;
Norihiro Ochi, Sakurai, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Various ink heads with holes different in diameter can be attached to a carriage of an inkjet printing apparatus. A CPU detects the type of an ink head attached, by states of signals on signal lines. The CPU executes a printing operation in a resolution corresponding to an amount of ink discharge based on a result of detection. When one of various ink heads having a plurality of holes and having the same pitch between the holes as that of one another ink head is attached, the printing operation is carried out such that the amount of ink discharge is substantially the same for the respective ink heads, in particular, that a relation of recording paper feed amount X=(C/(P,/P−1)×P,+P,is satisfied, further in particularly, C/(P,/P,)=a positive number. Ink heads provided with a plurality of holes arranged with the same interval may also be attached. Thus, various ink heads can be attached to the carriage to provide a plurality of resolutions and high quality prints.