IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0387922
(2006-03-24)
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등록번호 |
US-7625079
(2009-12-16)
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우선권정보 |
JP-2005-099472(2005-03-30) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP.
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인용정보 |
피인용 횟수 :
0 인용 특허 :
7 |
초록
▼
An ink cartridge for supplying an ink to an ink jet type recording head is made of a paper box formed with an ink chamber. Inner wall surfaces of the ink chamber are processed to have water-repellency. The ink chamber is partitioned into a storage chamber storing the ink and an ink absorbent chambe
An ink cartridge for supplying an ink to an ink jet type recording head is made of a paper box formed with an ink chamber. Inner wall surfaces of the ink chamber are processed to have water-repellency. The ink chamber is partitioned into a storage chamber storing the ink and an ink absorbent chamber containing an ink absorbent made of unwoven fabric. An ink outlet is formed in a bottom wall of the ink chamber. The ink outlet may be formed as a thin wall part with no water-repellency, so the ink percolates through the thin wall part. An ink run-out detection window is formed in the storage chamber. The ink run-out detection window may be a thin wall part or consist of an opening and a translucent paper sheet covering the opening.
대표청구항
▼
What is claimed is: 1. An ink jet type recording head ink tank, comprising: a closed paper box formed with an ink chamber for containing the ink, an ink outlet through which the ink is supplied from said ink chamber to said recording head, and an air inlet through which air is introduced into said
What is claimed is: 1. An ink jet type recording head ink tank, comprising: a closed paper box formed with an ink chamber for containing the ink, an ink outlet through which the ink is supplied from said ink chamber to said recording head, and an air inlet through which air is introduced into said ink chamber; and an ink absorbent contained in said ink chamber, absorbing and holding the ink by a capillary force, wherein said ink chamber, with said ink absorbed and held in the ink absorbent by the capillary force, has negative pressure, said ink chamber has an ink run-out detection window in a lower peripheral wall of said ink chamber, for detecting that the ink has run out from said ink chamber, and said ink run-out detection window comprises an opening through said lower peripheral wall and a translucent paper sheet covering said opening through said lower peripheral wall. 2. The ink jet type recording head ink tank as claimed in claim 1, wherein said ink chamber is partitioned into an ink absorbent chamber containing said ink absorbent, and a storage chamber storing the ink to be fed to said ink absorbent chamber, by a partition wall extending from a top wall toward a bottom wall of said ink chamber, an interconnection slot is formed through said partition wall in a portion near the bottom of said ink chamber to interconnect said ink absorbent chamber with said storage chamber, and said ink outlet and said air inlet are located on the side of said ink absorbent chamber, wherein the air introduced through said air inlet into said ink absorbent chamber and the ink stored in said ink storage chamber are exchanged through said interconnection slot. 3. The ink jet type recording head ink tank as claimed in claim 2, wherein said closed paper box comprises a folded paper sheet, and said partition wall comprises a paper strip affixed to inside of said closed paper box. 4. The ink jet type recording head ink tank as claimed in claim 1, wherein said ink absorbent comprises unwoven fabric. 5. The ink jet type recording head ink tank as claimed in claim 4, wherein said unwoven fabric is formed from paper. 6. The ink jet type recording head ink tank as claimed in claim 4, wherein said unwoven fabric comprises a combustible cellulose material including natural fiber and reproduced natural fiber. 7. The ink jet type recording head ink tank as claimed in claim 4, wherein said unwoven fabric is folded into concertinas. 8. The ink jet type recording head ink tank as claimed in claim 1, wherein inner wall surfaces of said ink chamber are water repellant. 9. The ink jet type recording head ink tank as claimed in claim 8, wherein said ink outlet is in a bottom of said ink chamber and comprises a non-water repellant thin wall part of a lower peripheral wall of said ink chamber, and the ink percolates through said non-water repellant thin wall part. 10. The ink jet type recording head ink tank as claimed in claim 1, wherein said ink run-out detection window comprises a thin part of said lower peripheral wall, and the thin part of said lower peripheral wall has a thickness that is less than a total thickness of said lower peripheral wall, and that permits light from a light source to pass through. 11. The ink jet type recording head ink tank as claimed in claim 1, wherein said ink jet type recording head ink tank is a removable cartridge. 12. The ink jet type recording head ink tank as claimed in claim 11, wherein said ink outlet and said air inlet are openings through a peripheral wall of said ink chamber and include removable sealing members that are removed to use the ink jet type recording head ink tank. 13. The ink jet type recording head ink tank as claimed in claim 12, wherein said closed paper box comprises a sheet and said sheet comprises a number of paper layers laminated together, and said sealing members comprise cut external ones of a portion of said number of paper layers, the cut external ones of said number of paper layers are located on an outer side of said closed paper box. 14. An ink-jet recording apparatus that records an image by use of an ink jet type recording head, wherein said ink-jet recording apparatus includes an ink tank comprising a closed paper box formed with an ink chamber for containing the ink, an ink outlet through which the ink is supplied from said ink chamber to said recording head, and an air inlet through which air is introduced into said ink chamber; and an ink absorbent contained in said ink chamber, said ink absorbent absorbing and holding the ink by a capillary force, and said ink chamber, with said ink absorbed and held by the capillary force in the ink absorbent, has negative pressure, wherein said ink chamber has an ink run-out detection window in a lower peripheral wall of said ink chamber, for detecting that the ink has run out from said ink chamber, the ink run-out detection window having an opening through said lower peripheral wall and a translucent paper sheet covering said opening through said lower peripheral wall. 15. The ink-jet recording apparatus as claimed in claim 14, wherein said ink tank has an ink run-out detection window in a lower peripheral wall of said ink chamber, and an ink run-out sensor is disposed in a position corresponding to said ink run-out detection window, for detecting optically a residual amount of the ink in said ink chamber.
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