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US 8,128,199 B2Granted
Ink jet print head, method for manufacturing ink jet print head, and printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorYasuhiko Osaki
Life of this patent
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Abstract
An ink jet printing apparatus and an ink jet printing method which use a print head having a plurality of ejection port rows to enable high-quality printing without causing uneven density in a conveying direction by varying the printing distribution ratio of the ejection port rows in the print head depending on gray level.
Claims9
An ink jet print head comprising:
- a plurality of liquid ejection boards each having an ejection port from which ink is ejected, each of the liquid ejection boards comprising a first member having a surface where the ejection port is opened therein and a second member supporting the first member;
- an energy generation element to generate energy used to eject a liquid;
- and
- a sealant arranged between the liquid ejection boards,
- wherein a cavity is formed inside the sealant.
2 more elements
A method for manufacturing an ink jet print head, the method comprising:
- preparing a plurality of liquid ejection boards using a first member having a surface which is provided with the ejection port and a second member supporting the first member, an energy generation element to generate energy used to eject a liquid, the liquid ejection boards arranged on a support member, a sealant sealing between the plural liquid ejection boards;
- and
- forming a cavity of a preset size inside the sealant.
Dependencies are inferred from the claim text.