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:
Oct. 21, 2014
Filed:
Dec. 09, 2010
Hidenori Yamato, Tokyo, JP;
Tatsuo Furukawa, Zama, JP;
Nobuyuki Hirayama, Fujisawa, JP;
Ryo Kasai, Tokyo, JP;
Kimiyuki Hayasaki, Kawasaki, JP;
Shinji Takagi, Kawasaki, JP;
Hidenori Yamato, Tokyo, JP;
Tatsuo Furukawa, Zama, JP;
Nobuyuki Hirayama, Fujisawa, JP;
Ryo Kasai, Tokyo, JP;
Kimiyuki Hayasaki, Kawasaki, JP;
Shinji Takagi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention is directed to real time detection of occurrence of a transfer error and feedback of the detection result to a printing apparatus in consideration of a possible risk that a signal transfer error occurs on a transfer path that becomes longer as the printhead is elongated. To accomplish this, in a printhead configured by cascade-connecting a plurality of element substrates, information of a transfer error detected in real time in each element substrate during transfer of a print data signal is output to an element substrate on the next stage by taking account of information input from an element substrate on the preceding stage. Information containing pieces of information from all element substrates is output from an element substrate on the final stage.