Liquid ejection apparatus, head unit and ink-jet cartridge
AssigneeCanon Kabushiki Kaisha
InventorsShuichi Murakami, Noribumi Koitabashi, Masaya Uetsuki, Yoshinori Nakajima
Life of this patent
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Abstract
A region to be covered by a cover plate (208) on an ejection opening forming surface (205) of an ink-jet head or an ink-jet head to which the cover plate (208) is installed are determined, on a basis of content of a rebounding mist generated upon ejection of an ink and a processing liquid in overlaying fashion. By this, in the ink-jet printing apparatus performing printing by ejecting the ink and the processing liquid for making the ink insoluble, deposition of the insoluble substance contained in the rebounding mist generated upon ejection of an ink and a processing liquid in overlaying fashion can be successfully prevented.
Claims23
An ink-jet printing apparatus for performing printing by using an ink-jet head having a plurality of ejection openings for ejecting an ink toward a printing medium, comprising:
- a plate member having a plurality of holes for covering around respective ejection openings of the plurality of ejection openings or around groups of ejection openings from among the plurality of ejection openings of the ink-jet head at least when the ink-jet head performs ink ejection for printing,
- wherein said plate member is detachable and a space is formed between said plate member and a face of the ink-jet head on which the plurality of ink ejection openings are formed.
An ink-jet printing apparatus for performing printing by using an ink ejecting portion having an ink ejection opening for ejecting an ink and a processing liquid ejecting portion having a processing liquid ejection opening for ejecting a processing liquid for processing the ink, and by ejecting the ink and the processing liquid on a printing medium in an overlaying manner, comprising:
- a plate member having a plurality of holes, one of said plurality of holes for covering around the ink ejection opening and another of said plurality of holes for covering around the processing liquid ejection opening at least when the ink ejecting portion and the processing liquid ejecting portion perform ejection of the ink and the processing liquid, respectively, for printing,
- wherein said plate member is detachable.
A head unit comprising:
- an ink ejecting portion having a plurality of ejection openings for ejecting an ink;
- and
- a plate member having a plurality of holes to cover around respective ejection openings of said plurality of ejection openings or around groups of ejection openings from among said plurality of ejection openings,
- wherein said plate member is detachable and a space is formed between said plate member and a face of said ink ejecting portion on which the plurality of ink ejection openings are formed.
A head unit comprising:
- an ink ejecting portion having an ink ejection opening for ejecting an ink;
- a processing liquid ejecting portion having a processing liquid ejection opening for ejecting a processing liquid for processing the ink;
- and
- a plate member having a plurality of holes, one of said plurality of holes being for covering around said ink ejection opening and another of said plurality of holes being for covering around said processing liquid ejection opening;
- wherein said plate member is detachable.
An ink-jet cartridge including an ink-jet head having a plurality of ejection openings for ejecting an ink and an ink tank integral with the ink-jet head and storing an ink to be supplied to the ink-jet head, comprising:
- a plate member having a plurality of holes for covering around respective ejection openings of the plurality of ejection openings or around groups of ejection openings from among the plurality of ejection openings of the ink-jet head;
- wherein said plate member is detachable and a space is formed between said plate member and a face of the ink-jet head on which the plurality of ink ejection openings are formed.
An ink-jet cartridge integrally including an ink ejecting portion having an ink ejection opening for ejecting an ink, a processing liquid ejecting portion having a processing liquid ejection opening for ejecting a processing liquid for processing the ink, an ink tank storing the ink to be supplied to the ink ejecting portion and a processing liquid tank storing the processing liquid to be supplied to the processing liquid ejecting portion, comprising:
- a plate member having a plurality of holes, one of said plurality of holes being for covering around the ink ejection opening and another of said plurality of holes being for covering around the processing liquid ejection opening;
- wherein said plate member is detachable.
Dependencies are inferred from the claim text.