Image forming apparatus and image forming apparatus pump
AssigneeCanon Kabushiki Kaisha
InventorNoboru Shimoyama
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes cap members for capping ejection outlets of an ejection portions for ejecting liquid to a recording material; pump diviec including suction inlets in fluid communication within the cap members; discharging outlets for discharging the liquid; cylinder member including a plurality of cylinders having the suction inlets and the discharging outlets, respectively; a seal member for dividing inner space in the cylinder divice into the cylinders; and a plurality of pistons reciprocable in the spaces in contact with the inner surfaces of the cylinders to produce pressure change in the inner spaces; wherein in each of the cylinders, the suction inlet is disposed more away from seal member than the discharging outlet.
Claims13
An image forming apparatus comprising:
- cap members for capping ejection outlets of an ejection portion for ejecting liquid to a recording material;
- pump means which includes cylinder means including a plurality of cylinders having suction inlets in fluid communication within said cap members and discharging outlets for discharging the liquid, respectively, a seal member for dividing inner space in the cylinder means into said plurality of cylinders, and a plurality of pistons reciprocable in inner spaces in contact with inner surfaces of the cylinders to produce pressure change in the inner spaces,
- wherein in each of said plurality of cylinders, said suction inlet is disposed more away from said seal member than said discharging outlet.
A pump for an image forming apparatus which includes cap members for capping ejection outlets of an ejection portion for ejecting liquid to a recording material, said pump comprising:
- cylinder means including a plurality of cylinders having suction inlets in fluid communication with said cap members and discharging outlets for discharging the liquid, respectively, a seal member for dividing inner space in the cylinder means into said plurality of cylinders, and a plurality of pistons reciprocable in spaces in contact with inner surfaces of the cylinders to produce pressure change in the inner spaces,
- wherein in each of said cylinders, said suction inlet is disposed more away from said seal member than said discharging outlet.
Dependencies are inferred from the claim text.