Inkjet printing apparatus, liquid application mechanism and method of controlling the liquid application mechanism
AssigneeCanon Kabushiki Kaisha
InventorsTetsu Hamano, Junichi Yoshikawa, Tsuyoshi Saeki
Life of this patent
Estimating the term…
Abstract
Even if a liquid is attached and solidified on a peripheral surface of a coating roller, application of the liquid on a medium is uniformly performed. At least a part of contacting member is separated from the coating roller and the coating roller is rotated in a second direction as a reverse direction to a first direction to pull out the liquid from a liquid retaining space onto the coating roller. Next, by interrupting the above separation and rotating the coating roller in the first direction, a liquid reservoir is formed in the periphery of a contacting portion between the coating roller and the contacting member.
Claims9
A liquid application mechanism comprising:
- a coating roller;
- and
- a member contacting with the coating roller to form a space retaining a liquid between the member and the coating roller,
- wherein a medium is conveyed by rotating the coating roller in a first direction to apply the liquid reserved in the space on the medium, and
- wherein the liquid application mechanism includes a mechanism for separating at least a part of the member from the coating roller, and in a state where at least a part of the member is separated from the coating roller by the mechanism, the coating roller is rotated in a second direction as a reverse direction to the first direction, and the rotating in the second direction enable to pull out the liquid from the space onto the coating roller.
A method for controlling a liquid application mechanism,
- the liquid application mechanism comprising:
- a coating roller;
- and
- a member contacting with the coating roller to form a space retaining a liquid between the member and the coating roller,
- wherein a medium is conveyed by rotating the coating roller in a first direction to apply the liquid reserved in the space on the medium, and
- the method comprising the steps of:
- rotating the coating roller in a second direction as a reverse direction to the first direction in a state of separating at least a part of member from the coating roller to pull out the liquid from the space onto the coating roller;
- and
- after the above step, rotating the coating roller in the first direction in a state where the member and the coating roller are in contact with each other by interrupting the separation therebetween to reserve the liquid pulled by the above step in the periphery in a contacting position between the coating roller and the member and form a liquid reservoir.
Dependencies are inferred from the claim text.