Ink jet printing apparatus, ink jet printing method, and data generating apparatus
AssigneeCanon Kabushiki Kaisha
InventorsRie Takekoshi, Takao Ogata, Takumi Kaneko, Noboru Kunimine
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Abstract
An ink jet printing apparatus, an ink jet printing method, and a data generating apparatus are provided in which an image performance such as an abrasion resistance can be improved and a printing head can have a longer life by ejecting processing liquid at an appropriate time. The processing liquid is ejected, to a predetermined area on a printing medium in which the formation of a image by ink is completed, from a printing head in two or more scannings in five scannings of the printing heads.
Claims15
An ink jet printing apparatus for causing a printing head to perform a plurality of printing scannings on a predetermined area of a printing medium along a predetermined direction, the printing head being capable of ejecting an ink and a processing liquid in order to form an image using the ink on the printing medium and cover the formed image using the processing liquid, the printing medium being transported a predetermined distance in a transporting direction crossing the predetermined direction during time between the plurality of printing scannings, the ink jet printing apparatus comprising:
- a generating unit operable to generate processing liquid ejection data for ejecting the processing liquid from the printing head for the predetermined area for which the formation of the image by the ink is completed;
- and
- a control unit configured to cause the printing head to eject the processing liquid, based on the processing liquid ejection data generated by the generating unit,
- wherein the predetermined area includes a first pixel area and a second pixel area, a length of the predetermined area in the transporting direction corresponding to the predetermined distance of the printing medium transported by one transporting operation, and
- wherein the plurality of printing scannings includes a first scanning on the predetermined area in which the ink is ejected on the first pixel area and a second scanning, subsequent to the first scanning, on the predetermined area in which the ink is ejected on the second pixel area and the processing liquid is ejected on the first pixel area.
An ink jet printing method for causing a printing head to perform a plurality of printing scannings to a predetermined area on a printing medium along a predetermined direction, the printing head being capable of ejecting an ink and a processing liquid in order to form an image by the ink on the printing medium and cover the formed image by the processing liquid, the printing medium being transported a predetermined distance in a transporting direction crossing the predetermined direction during time between the plurality of printing scannings, the ink jet printing method comprising:
- generating processing liquid ejection data for ejecting the processing liquid from the printing head onto the predetermined area after the image is already formed by the ink;
- and
- ejecting the processing liquid from the printing head, based on the generated processing liquid ejection data,
- wherein the predetermined area includes a first pixel area and a second pixel area, a length of the predetermined area in the transporting direction corresponding to the predetermined distance of the printing medium transported by one transporting operation, and
- wherein the plurality of printing scannings includes a first scanning on the predetermined area in which the ink is ejected on the first pixel area and a second scanning, subsequent to the first scanning, on the predetermined area in which the ink is ejected on the second pixel area and the processing liquid is ejected on the first pixel area.
A data generating apparatus for generating ejection data for causing a printing head to perform a plurality of printing scannings on a predetermined area of a printing medium along a predetermined direction, the printing head being capable of ejecting an ink and a processing liquid in order to cover the printing medium with the processing liquid and to form an image using the ink on the printing medium, the printing medium being transported a predetermined distance in a transporting direction crossing the predetermined direction during time between the plurality of printing scannings, the data generating apparatus comprising:
- a generating unit configured to generate processing liquid ejection data to enable the printing head to eject the processing liquid for a predetermined area for which the formation of an image by the ink is completed,
- wherein the predetermined area includes a first pixel area and a second pixel area, a length of the predetermined area in the transporting direction corresponding to the predetermined distance of the printing medium transported by one transporting operation, and
- wherein the plurality of printing scannings includes a first scanning on the predetermined area in which the ink is ejected on the first pixel area and a second scanning, subsequent to the first scanning, on the predetermined area in which the ink is ejected on the second pixel area and the processing liquid is ejected on the first pixel area.
Dependencies are inferred from the claim text.