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US 6,293,660 B1Granted
Liquid container for ink jet head
AssigneeCanon Kabushiki Kaisha
InventorsHajime Kishida, Ken Tsuchii
Life of this patent
Estimating the term…
Abstract
A liquid container includes a main body for accommodating liquid contributable to image formation; a liquid absorbing material, accommodated in said main body, for holding the liquid; a liquid supply port, in said main body, for supplying the liquid toward an ejection head for the image formation; an air vent for fluid communication between said main body and an ambience; wherein a projected surface is projected toward inside of said main body at a part of an inner surface of said main body adjacent said liquid supply port.
Claims15
An ink container comprising:
- a first chamber accommodating a liquid absorbing material and having a liquid supply port for supplying liquid toward an ejection head for image formation and an air vent for fluid communication with an ambient air;
- a second chamber for containing the liquid to be supplied to said first chamber, said second chamber being in fluid communication with said first chamber through a communicating portion provided adjacent a bottom portion of said second chamber, in use, being substantially hermetically sealed except for said communicating portion;
- a partition wall for separating said first chamber and said second chamber and defining a top end of said communication portion, wherein said container has a substantially flat thin and rectangular parallelopiped configuration;
- and
- wherein an inner surface of each of such sides of said first chamber as have maximum areas and are connected to a side having said liquid supply port, is inwardly convex adjacent said liquid supply port.
2 more elements
An ink container comprising:
- a first chamber accommodating a liquid absorbing material and having a liquid supply port for supplying liquid toward an ejection head for image formation and an air vent for fluid communication with an ambient air;
- a second chamber for containing the liquid to be supplied to said first chamber, said second chamber being in fluid communication with said first chamber through a communicating portion provided adjacent a bottom portion of said second chamber, in use, being substantially hermetically sealed except for said communicating portion;
- a partition wall for separating said first chamber and said second chamber and defining a top end of said communication portion, wherein said container has a substantially flat thin and rectangular parallelopiped configuration;
- and
- a projected surface projected toward an inside of said first chamber at a part of an inner surface of each of lateral sides of said first chamber connecting to a side having said liquid supply port, adjacent said liquid supply port;
- wherein an outer surface of a substantially central portion of each of maximum area side walls of said first chamber is recessed.
3 more elements
Dependencies are inferred from the claim text.