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AssigneeCanon Kabushiki Kaisha
InventorsTakatoshi Nakano, Yoshinori Nakagawa, Atsushi Takahashi, Takuya Fukasawa
Estimating the term…
An inkjet printing apparatus is provided with a tank that stores ink, a print head that performs print operation by ejecting ink supplied from the tank, a circulation unit that establishes a circulating state to circulate ink in a circulation path if print operation is performed and establishes a stopped state to stop circulation of ink if print operation is terminated, and a deaeration unit that performs deaeration operation to deaerate ink inside the circulation path. The apparatus includes an estimation unit that estimates a dissolved gas amount in ink inside the circulation path based on dissolved gas amounts increased in the circulating state and in the stopped state, respectively, and a control unit that causes the deaeration unit to execute deaeration operation after completion of print operation if the dissolved gas amount estimated by the estimation unit exceeds a predetermined threshold.
1-18. (canceled)
A printing apparatus comprising:
A circulation apparatus comprising:
A control method of a printing apparatus including a tank configured to store liquid to be supplied to a print head which ejects the liquid based on print data to perform print operation, and a circulation unit configured to establish a circulating state in which the liquid is put into circulation in a circulation path including the tank and the print head, and to establish a stopped state in which the circulation of the liquid in the circulation path is stopped, the control method comprising:
Dependencies are inferred from the claim text.