Claims
- 1. An ink jet head cartridge, comprising:a recording head for ejecting ink; an ink container for containing the ink to be supplied to said recording head; an ink absorbing material made of porous or fibrous material in said ink container, wherein an inside of said ink container is communicated with ambience to permit supply of the ink from said ink container to said recording head, wherein said absorbing material has a higher density adjacent ink supply port for supporting the ink from said container to said recording head, and has a decreasing density away from the supply port; and a projection for providing the portion of the high density of said ink absorbing material by engagement with said ink absorbing material.
- 2. A cartridge according to claim 1, wherein said ink absorbing material is of trapezoidal configuration having a longer side adjacent the ink supply port, when it is not set in said ink container, and by placing said ink absorbing material between said projection and a wall at the ink supply port side, the high density can be provided, and wherein said projection is effective to provide two flows of the ink to the ink supply port.
- 3. A cartridge according to claim 1, wherein the high density is 1.05-2 times a density of the other part.
- 4. A cartridge according to claim 1, wherein said recording head has an ink ejection element using thermal energy.
- 5. An ink jet recording apparatus, comprising:an ink jet head cartridge, including; a recording head for ejecting ink; an ink container for containing the ink to be supplied to said recording head; an ink absorbing material made of porous or fibrous material in said ink container, wherein an inside of said ink container is communicated with ambience to permit supply of the ink from said ink container to said recording head, wherein said absorbing material has a higher density adjacent ink supply port for supporting the ink from said container to said recording head, and has a decreasing density away from the supply port; a projection for providing the portion of the high density of said ink absorbing material by engagement with said ink absorbing material; said apparatus further comprising a carriage for mounting said cartridge.
Priority Claims (4)
Number |
Date |
Country |
Kind |
1-274640 |
Oct 1989 |
JP |
|
1-274473 |
Oct 1989 |
JP |
|
1-274474 |
Oct 1989 |
JP |
|
1-274839 |
Oct 1989 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 09/547,341, filed Apr. 11, 2000, allowed; which is a division of application Ser. No. 08/861,768 filed May 22, 1997; now U.S. Pat. No. 6,086,192, issued on Jul. 11, 2000; which is a continuation of application Ser. No. 08/627,366 filed Apr. 4, 1996, now U.S. Pat. No. 5,693,901; which is a continuation of application Ser. No. 08/323,050 filed Oct. 14, 1994, abandoned; which is a continuation of application Ser. No. 07/993,919 filed Dec. 18, 1992 abandoned; which is a continuation of application Ser. No. 07/599,978 filed Oct. 19, 1990, abandoned. This application is related to application Ser. No. 08/279,079, filed Jul. 22, 1994, now U.S. Pat. 5,557,310.
US Referenced Citations (12)
Foreign Referenced Citations (8)
Number |
Date |
Country |
139508 |
May 1985 |
EP |
261764 |
Mar 1988 |
EP |
2470956 |
Jun 1981 |
FR |
57-002786 |
Jan 1982 |
JP |
58-36457 |
Mar 1983 |
JP |
58-53473 |
Mar 1983 |
JP |
60-68959 |
Apr 1985 |
JP |
1-148559 |
Jun 1989 |
JP |
Continuations (4)
|
Number |
Date |
Country |
Parent |
08/627366 |
Apr 1996 |
US |
Child |
08/861768 |
|
US |
Parent |
08/323050 |
Oct 1994 |
US |
Child |
08/627366 |
|
US |
Parent |
07/993919 |
Dec 1992 |
US |
Child |
08/323050 |
|
US |
Parent |
07/599978 |
Oct 1990 |
US |
Child |
07/993919 |
|
US |