# US 7,175,267 B2 · Ink cartridge

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,175,267 B2
- Document ID: US7175267B2
- Status: Granted
- Kind: B2
- Application number: 10/838,357
- Filed: 2004-05-05
- Published: 2005-11-10
- Granted: 2007-02-13
- Earliest claimed: 2004-05-05
- Assignees: Monitek Electronics Limited
- Inventors: Pui Kuong Lui
- Web page: https://patentgrep.com/patent/US7175267B2

## CPC

- B41J 2/17513: {Inner structure}
- B41J 2/17556: {Means for regulating the pressure in the cartridge}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

An ink cartridge adapted for an ink jet printer includes a housing, a top cover and an ink porous member. The housing has a bottom wall, a plurality of upstanding side walls extending from edges of the bottom wall, a plurality of upstanding baffles extending from a middle of the bottom wall to define an inner chamber and an outer chamber and an ink outlet port in communication with the inner chamber for containing ink therein. The ink porous member is arranged within the inner chamber of the housing for being impregnated with the ink, and the ink is filled in the outer chamber thereby to storage with a higher quantity of ink.

## Claims

### Claim 1

An ink cartridge adapted for an ink jet printer, comprising:
a housing having a bottom wall, a plurality of upstanding side walls extending from edges of the bottom wall, a plurality of upstanding baffles extending from a middle of the bottom wall to define an inner chamber and an outer chamber around the inner chamber, and an ink outlet port in communication with the inner chamber for containing ink therein;
a top cover coupled on the housing; and
an ink porous member arranged within the inner chamber of the housing for being impregnated with the ink;
wherein at least one slot is formed between at least two abutting baffles, so that the ink in the outer chamber can freely flow into the inner chamber through the slot.

### Claim 2 (depends on 1)

The ink cartridge of claim 1, wherein each baffle has a height substantially equal to that of each side wall.

### Claim 3 (depends on 1)

The ink cartridge of claim 1, wherein each baffle has a height substantially smaller than that of each side wall.

### Claim 4 (depends on 1)

The ink cartridge of claim 1, wherein the ink outlet port is protruded outwardly from an outer surface of the bottom wall of the housing, and the ink outlet port has an upper opening near an inner surface of the bottom wall of the housing and a lower opening located at an external of the housing.

### Claim 5 (depends on 4)

The ink cartridge of claim 4, wherein the upper opening has a diameter substantially equal to that of the lower opening of the ink outlet port.

### Claim 6 (depends on 4)

The ink cartridge of claim 4, wherein the inner surface of the bottom wall is defined as a substantial plane.

### Claim 7 (depends on 1)

The ink cartridge of claim 1, wherein the ink porous member is dimensioned substantially the same as the inner chamber of the housing.

### Claim 8 (depends on 1)

The ink cartridge of claim 1, wherein the ink porous member is dimensioned substantially smaller than the inner chamber of the housing.

### Claim 9

An ink cartridge adapted for an ink jet printer, comprising:
a housing having a bottom wall, four upstanding side walls extending from edges of the bottom wall, four upstanding baffles extending from a middle of the bottom wall to define an inner chamber and an outer chamber and an ink outlet port in communication with the inner chamber for containing ink therein;
a top cover coupled on the housing; and
an ink porous member arranged within the inner chamber of the housing for being impregnated with ink, and the ink porous member dimensioned substantially the same as the inner chamber of the housing;
wherein at least four slots each is formed between two abutting baffles, so that the ink in the outer chamber can freely flow into the inner chamber through the slots.