Ink jet recording apparatus and ink jet recording head
AssigneeCanon Kabushiki Kaisha
InventorsAkiko Maru, Kiichiro Takahashi, Tetsuya Edamura, Minoru Teshigawara, Takatoshi Nakano, Hiroshi Taira
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Abstract
The present invention reduces image deterioration such as density nonuniformity when recording is performed using a recording head having two ejection orifice rows that eject a predetermined achromatic ink, for example, gray ink. For this purpose, the distance between two ejection orifice rows that eject a predetermined achromatic ink is larger than the distance between two ejection orifice rows that eject a predetermined chromatic ink.
Claims10
An ink jet recording apparatus comprising:
- a recording head chip that ejects two or more colors of achromatic inks and one or more colors of chromatic inks;
- and
- a scanning unit that makes the recording head chip scan a recording medium,
- wherein the recording head chip has first and second ejection orifice rows that eject a predetermined achromatic ink and third and fourth ejection orifice rows that eject a predetermined chromatic ink, and
- wherein in the direction of scanning of the recording head chip, a distance between the first ejection orifice row and the second ejection orifice row is larger than a distance between the third ejection orifice row and the fourth ejection orifice row.
An ink jet recording head chip that ejects two or more colors of achromatic inks and one or more colors of chromatic inks, the recording head chip comprising:
- first and second ejection orifice rows that eject a predetermined achromatic ink;
- and
- third and fourth ejection orifice rows that eject a predetermined chromatic ink,
- wherein in the direction of scanning of the recording head chip, a distance between the first ejection orifice row and the second ejection orifice row is larger than a distance between the third ejection orifice row and the fourth ejection orifice row.
Dependencies are inferred from the claim text.