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. 10, 2002
Filed:
Jan. 16, 1997
Masayoshi Tachihara, Choufu, JP;
Yasuyuki Tamura, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink-jet head includes a plurality of ink channels for guiding ink to corresponding discharging ports, and discharging units, each including a discharging port, and a heating element, provided for the discharging port, for generating a bubble for discharging the ink by providing the ink within the corresponding ink channel with thermal energy. A plurality of discharging units having different amounts of ink discharge are provided at each of the ink channels. An ink-jet-head cartridge includes the above-described ink-jet head and an ink receptable for holding the ink to be supplied to the ink-jet head. An ink-jet apparatus includes the above-described ink-jet head and a recording-medium conveying unit for conveying a recording medium for receiving the discharged ink. In an ink-jet recording method, a head in which a plurality of discharging units, each including a heating element for generating heat for discharging ink, and a discharging port for discharging the ink, are provided at each ink channel is used, and recording is performed by discharging different amounts of ink from the discharging ports by selectively driving the plurality of discharging units.