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US 6,183,075 B2Granted
Ink container, manufacturing method therefor, ink jet cartridge and ink jet apparatus
AssigneeCanon Kabushiki Kaisha
InventorToshiaki Sasaki
Life of this patent
Estimating the term…
Abstract
An ink container for containing ink includes an inner container having a plurality of adjacent accommodating chambers for accommodating the ink; and an outer casing for enclosing an outer side of the inner container. The inner container and the outer casing are composed of resin materials which are substantially non-stretched.
Claims24
An ink container for containing ink for ink jet recording, comprising:
- an inner container having a plurality of adjacent accommodating chambers for accommodating the ink and ink supplying portions corresponding to respective accommodating chambers;
- an outer casing for enclosing an outer side of said inner container, wherein the outer casing is substantially-polygonal-prism shaped, and the inner container has a substantially flat surface which first deforms with consumption of liquid;
- and
- a common air vent common to all of said accommodating chambers and formed in said outer casing;
- wherein a negative pressure is produced in said ink container when the ink is discharged from said ink container;
- wherein said inner container and outer casing are composed of resin materials which are substantially non-stretched, and adjacent ones of said chambers of said inner container are composed of the substantially non-stretched material and closely contact each other in an initial stage in which said container is filled with the ink and are deformable independently from each other when the ink is discharged from said ink container while producing a negative pressure in the chambers,
- wherein the resin materials of said inner container and said outer casing have different thermal contraction rates,
- wherein the inner container has corners corresponding to corners of the outer casing and
- wherein the outer casing has inner container deformation limiting portions for limiting deformation of said inner container.
6 more elements
An ink jet cartridge, comprising:
- an ink inner container comprising:
- an inner container having a plurality of adjacent accommodating chambers for accommodating ink and ink supplying portions corresponding to respective accommodating chambers;
- an outer casing for enclosing an outer side of said inner container, wherein the outer casing is substantially-polygonal-prism shaped, and the inner container has a substantially flat surface which first deforms with consumption of liquid;
- and
- a common air vent common to all of said accommodating chambers and formed in said outer casing;
- wherein a negative pressure is produced in said ink container when the ink is discharged from said ink container;
- an ink jet head, connectable with at least one of said ink supplying portions, for ejecting the ink;
- wherein said inner container and outer casing are composed of resin materials which are substantially non-stretched, and adjacent ones of said accommodating chambers of said inner container are composed of a substantially non-stretched material and closely contact each other in an initial stage in which said container is filled with the ink and are deformable independently from each other when the ink is discharged from said ink container while producing a negative pressure in the chambers,
- wherein the resin materials of said inner container and said outer casing have different thermal contraction rates,
- wherein said inner container has corners corresponding to corners of the outer casing, and
- wherein said outer casing has inner container deformation limiting portions for limiting deformation of said inner container.
8 more elements
Dependencies are inferred from the claim text.