Ink-jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Yazawa, Hitoshi Sugimoto
Life of this patent
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Abstract
An ink-jet recording apparatus having first eject ports ejecting a first ink; second eject ports ejecting a second ink; a recovery means for executing recovery treatments respectively against the first and second eject ports; and a controlling means for controlling the recovery means to execute sucking treatments against corresponding eject ports whenever elapsed times in respective first and second eject ports after the most recent recovery treatments against respective first and second eject ports by the recovery means exceed respective predetermined threshold times, where the predetermined threshold time for the second eject ports is set at an integral which is more than two times the predetermined threshold time for the first eject ports.
Claims11
An ink-jet recording apparatus comprising:
- a recovery device for executing recovery treatment respectively for a first eject port for ejecting first ink and a second eject port for ejecting second ink different from the first ink;
- and
- a control means for causing said recovery device to execute recovery treatment for said first eject port and/or said second eject port which an elapsed time after said recovery device executes a most recent recovery treatment exceeds respective predetermined threshold times peculiar to respective said first eject port and said second eject port, wherein:
- the predetermined threshold time for said first eject port is set at nearly integral times as long as the predetermined threshold time for said second eject port, the integral being two or more.
An ink-jet recording apparatus comprising:
- a recovery device for executing recovery treatment respectively for a first eject port for ejecting first ink and a second eject port for ejecting second ink different from the first ink;
- and
- a measuring means for measuring elapsed time after said recovery device executes a most recent recovery treatment for respective said first eject port and said second eject port;
- and
- a control means for causing said recovery device to execute recovery treatment for said first eject port and/or said second eject port which an elapsed time measured by said measuring means exceeds respective predetermined threshold times peculiar to respective said first eject port and said second eject port, and for clearing the elapsed time measured by said measuring means which corresponding eject port is recovered by said recovery device, wherein:
- the predetermined threshold time for said first eject port is set at nearly integral times as long as the predetermined threshold time for said second eject port, the integral being two or more.
A method for performing recovery in an ink-jet recording apparatus, the method comprising the steps of:
- executing recovery treatment respectively for a first eject port for ejecting first ink and a second eject port for ejecting second ink different from the first ink;
- and
- measuring elapsed time after execution of a most recent recovery treatment for respective said first eject port and said second eject port;
- and
- controlling to cause execution of recovery treatment for said first eject port and/or said second eject port for which a measured elapsed time exceeds respective predetermined threshold times peculiar to respective said first eject port and said second eject port, and to clear the measured elapsed time which corresponds to the eject port that is recovered by said execution of recovery treatment, wherein:
- the predetermined threshold time for said first eject port is set nearly integral times as long as the predetermined threshold time for said second eject port, the integral being two or more.
Dependencies are inferred from the claim text.