Printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakuya Fukasawa, Takatoshi Nakano, Yoshinori Nakagawa, Atsushi Takahashi
Life of this patent
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Abstract
A printing apparatus includes a print head provided with a discharge port that discharges liquid and a pressure chamber filled with the liquid to be discharged from the discharge port, and configured to perform a printing operation by discharging the liquid from the discharge port based on print data, includes a circulation unit that performs circulation of the liquid in a circulation passage including the pressure chamber in a state where the printing operation is performed, and includes a control unit that controls the circulation unit to continue the circulation for a predetermined time after the printing operation is completed.
Claims17
A printing apparatus comprising:
- a print head including
- a discharge port configured to discharge liquid, and
- a pressure chamber to be filled with the liquid to be discharged from the discharge port,
- the print head being configured to perform a printing operation by discharging the liquid from the discharge port based on print data;
- a circulation unit configured to perform circulation of the liquid in a circulation passage including the pressure chamber in a state where the printing operation is performed;
- and
- a control unit configured to control the circulation unit to continue the circulation for a predetermined time after the printing operation is completed.
A printing apparatus comprising:
- a print head including
- a discharge port configured to discharge liquid, and
- a pressure chamber to be filled with the liquid to be discharged from the discharge port,
- the print head being configured to perform a printing operation by discharging the liquid from the discharge port based on print data;
- a circulation unit configured to perform circulation of the liquid in a circulation passage including the pressure chamber in a state where the printing operation is performed;
- a first obtaining unit configured to obtain information concerning a temperature of the print head;
- and
- a control unit configured to control the circulation unit after completion of the printing operation and based on an obtained result by the first obtaining unit in such a way as to cause the circulation unit to circulate the liquid in a case where the temperature of the print head is higher than a predetermined temperature and to cause the circulation unit not to circulate the liquid in a case where the temperature of the print head is below the predetermined temperature.
A printing apparatus comprising:
- a print head including
- a discharge port configured to discharge liquid, and
- a pressure chamber to be filled with the liquid to be discharged from the discharge port,
- the print head being configured to perform a printing operation by discharging the liquid from the discharge port based on print data;
- a circulation unit configured to perform circulation of the liquid in a circulation passage including the pressure chamber in a state where the printing operation is performed;
- an obtaining unit configured to obtain information concerning a printing operation period from a start to an end of the printing operation;
- and
- a control unit configured to control the circulation unit to circulate the liquid for a prescribed time after the printing operation is completed in a case where the printing operation period obtained by the obtaining unit exceeds a predetermined period.
Dependencies are inferred from the claim text.