Claims
- 1. An ink cartridge for an ink jet printer, comprising:
a housing having at least one wall; at least two ink chambers for containing different ink accommodated in said housing; and ink supply ports formed in one wall of said housing within each of said ink chambers, each of said ink supply ports having an inner opening and an outer opening, wherein a first distance from said inner opening of a first ink supply port to that of a second ink supply port adjacent to said first ink supply port is different from a second distance from said outer opening of said first ink supply opening to that of said second ink supply port.
- 2. The ink cartridge of claim 1, wherein said first distance is greater than said second distance.
- 3. The ink cartridge of claim 1, further comprising:
ink supply passages at least partly defining said ink supply port, each of said ink supply passage projecting inward said housing from a bottom wall of said housing, said ink supply passage communicating with said respective ink chamber at an inner end thereof; and porous members impregnated with ink and fitted in each of said ink chambers and engaging with said ink supply port through said ink supply passage.
- 4. The ink cartridge of claim 1, wherein said ink chamber comprises three chambers separated from one another.
- 5. The ink cartridge of claim 1, wherein said ink chamber comprises five chambers separated from one another.
- 6. The ink cartridge of claim 3, wherein said each of said ink supply port compresses said respective porous member.
- 7. The ink cartridge of claim 3, wherein each of said ink supply passages is disposed at substantially a center of said respective ink chamber.
- 8. The ink cartridge of claim 6, wherein said angled surface is arcuated.
- 9. The ink cartridge of claim 6, wherein said inner surface of said ink supply port is entirely angled.
- 10. The ink cartridge of claim 8, wherein the height of said protrusion member is higher than that of said projecting edge when said filter is secured onto said projecting edge.
- 11. The ink cartridge of claim 8, wherein said protrusion member comprises two or more elongated protrusions.
Priority Claims (6)
Number |
Date |
Country |
Kind |
HEI. 10-130630 |
May 1998 |
JP |
|
HEI. 10-130631 |
May 1998 |
JP |
|
HEI. 10-131483 |
May 1998 |
JP |
|
HEI. 10-175340 |
Jun 1998 |
JP |
|
HEI. 11-22036 |
Jan 1999 |
JP |
|
HEI. 11-23300 |
Jan 1999 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a division of copending application Ser. No. 09/312,073, filed on May 13, 1999.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09312073 |
May 1999 |
US |
Child |
10044281 |
Jan 2002 |
US |