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. 14, 2005
Filed:
Jul. 17, 2001
Toru Nakayama, Kanagawa, JP;
Toru Nakayama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A shift register stores printing data in synchronism with a transfer clock. A latch circuit temporarily latches data having a predetermined number of bits to the shift register in response to a data latch signal. A shift register stores block data in synchronism with a transfer clock. A latch circuit temporarily latches data having the predetermined number of bits to the shift register in response to a block data latch signal. Each AND gate receives a block selection signal from a printing block selection unit, a printing data selection signal corresponding to a printing dot from a printing data supply unit, and an energization time selection signal. An output from the AND gate turns on/off a switching transistor. As a result, a heater is heated to discharge ink droplets.