US5182579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink-jet having ink storing absorbant material
Assignee: Canon Inc
•
Filing: 1991-07-10
•
Granted: 1993-01-26
•
Expires: 2011-07-10
Abstract
Abstract An ink tank having an ink storing portion encases an ink-absorbent member for holding ink. The ink-absorbent member comprises a porous material having therein compressed open cells. The compression ratio r1 of an apparent volume V1 before compression to an apparent volume V2 after compression (r1=V1/V2) and the cell number p represented by number of cells per inch in the state of V1 satisfy the relation (I) below, and p being not more than 60. 100 [inch<-><1>] </= r1.p </= 200 [inch<-><1>] (I) <IMAGE>
Inventors
- 👤 Masahiro Haruta
- 👤 Masami Ikeda
- 👤 Seiichiro Karita
- 👤 Nobuyuki Kuwabara
- 👤 Takahisa Kawamura
- 👤 Masahiko Higuma
- 👤 Teruo Arashima
- 👤 Tsutomu Abe
- 👤 Osamu Nishiwaki
- 👤 Shinichi Tochihara
- 👤 Akira Nagashima
- 👤 Makoto Aoki
- 👤 Kumiko Mafune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:44
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17513
Claims Analysis
Total Claims: 98
Claim 1
Independent Claim
92 words
An ink tank having an ink storing portion encasing an ink-absorbent member for holding ink, the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 inch [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 2
Dependent Claim
92 words
An ink tank having an ink storing portion encasing an ink-absorbent member for holding ink, the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 inch [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 3
Dependent Claim
13 words
The ink tank of claim 1, wherein the ink-absorbent member comprises a polyurethane.
Claim 4
Dependent Claim
22 words
The ink tank of claim 1, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 5
Dependent Claim
25 words
The ink tank of claim 1, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 6
Dependent Claim
26 words
The ink tank of claim 1, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 12[ inch-1]≦r.sub.1 ·p≦150 [inch-1] (II)
Claim 7
Dependent Claim
14 words
The ink tank of claim 1, wherein ink is held in the ink-storing portion.
Claim 8
Dependent Claim
19 words
The ink tank of claim 1, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 9
Dependent Claim
14 words
The ink tank of claim 7, wherein the coloring matter is a water-soluble dye.
Claim 10
Dependent Claim
113 words
An ink-jet cartridge having an ink storing portion encasing an ink absorbent member for holding ink, the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside of the ink storing portion to an apparent volume V 6 of the porous material in an ink-impregnated state encased in the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 11
Dependent Claim
113 words
An ink-jet cartridge having an ink storing portion encasing an ink absorbent member for holding ink, the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside of the ink storing portion to an apparent volume V 6 of the porous material in an ink-impregnated state encased in the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 12
Dependent Claim
13 words
The ink-jet cartridge of claim 9, wherein the ink-absorbent member comprises a polyurethane,
Claim 13
Dependent Claim
22 words
The ink-jet cartridge of claim 9, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 14
Dependent Claim
25 words
The ink-jet cartridge of claim 9, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 15
Dependent Claim
26 words
The ink-jet cartridge of claim 9, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦K·p≦150 [inch.sup.-1 ](IV)
Claim 16
Dependent Claim
14 words
The ink-jet cartridge of claim 9, wherein ink is held in the ink-storing portion.
Claim 17
Dependent Claim
19 words
The ink-jet cartridge of claim 14, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 18
Dependent Claim
14 words
The ink-jet cartridge of claim 15, wherein the coloring matter is a water-soluble dye.
Claim 19
Dependent Claim
107 words
An ink-jet cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 20
Dependent Claim
107 words
An ink-jet cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 21
Dependent Claim
13 words
The ink-jet cartridge of claim 17, wherein the ink-absorbent member comprises a polyurethane.
Claim 22
Dependent Claim
22 words
The ink-jet cartridge of claim 17, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 23
Dependent Claim
25 words
The ink-jet cartridge of claim 17, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 24
Dependent Claim
27 words
The ink-jet cartridge of claim 17, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦r.sub.1 ·p≦150 [inch.sup.-1 ](II)
Claim 25
Dependent Claim
14 words
The ink-jet cartridge of claim 17, wherein ink is held in the ink-storing portion.
Claim 26
Dependent Claim
19 words
The ink-jet cartridge of claim 22, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 27
Dependent Claim
14 words
The ink-jet cartridge of claim 23, wherein the coloring matter is a water-soluble dye.
Claim 28
Dependent Claim
30 words
The ink-jet cartridge of claim 17, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 29
Dependent Claim
127 words
An ink-jet cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to an apparent volume V 6 of the porous material in an ink-impregnated state encased in the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 30
Dependent Claim
127 words
An ink-jet cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to an apparent volume V 6 of the porous material in an ink-impregnated state encased in the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 31
Dependent Claim
13 words
The ink-jet cartridge of claim 26, wherein the ink-absorbent member comprises a polyurethane.
Claim 32
Dependent Claim
22 words
The ink-jet cartridge of claim 26, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 33
Dependent Claim
25 words
The ink-jet cartridge of claim 26, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 34
Dependent Claim
26 words
The ink-jet cartridge of claim 26, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦K·p≦150 [inch.sup.-1 ](IV)
Claim 35
Dependent Claim
14 words
The ink-jet cartridge of claim 26, wherein ink is held in the ink-storing portion.
Claim 36
Dependent Claim
19 words
The ink-jet cartridge of claim 31, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 37
Dependent Claim
14 words
The ink-jet cartridge of claim 32, wherein the coloring matter is a water-soluble dye.
Claim 38
Dependent Claim
30 words
The ink-jet cartridge of claim 26, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 39
Dependent Claim
149 words
An ink-jet cartridge provided with an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion, and a filter at an end of the supply tube; the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 40
Dependent Claim
149 words
An ink-jet cartridge provided with an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion, and a filter at an end of the supply tube; the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 41
Dependent Claim
13 words
The ink-jet cartridge of claim 35, wherein the ink-absorbent member comprises a polyurethane.
Claim 42
Dependent Claim
22 words
The ink-jet cartridge of claim 35, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 43
Dependent Claim
25 words
The ink-jet cartridge of claim 35, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 44
Dependent Claim
27 words
The ink-jet cartridge of claim 35, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦r.sub.1 ·p≦150 [inch.sup.-1 ](II)
Claim 45
Dependent Claim
14 words
The ink-jet cartridge of claim 35, wherein ink is held in the ink-storing portion.
Claim 46
Dependent Claim
19 words
The ink-jet cartridge of claim 40, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 47
Dependent Claim
14 words
The ink-jet cartridge of claim 41, wherein the coloring matter is a water-soluble dye.
Claim 48
Dependent Claim
30 words
The ink-jet cartridge of claim 35, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 49
Dependent Claim
161 words
The ink-jet cartridge provided with an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, and a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion, and a filter at an end of the supply tube; the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to an apparent volume V 6 of the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 50
Dependent Claim
161 words
The ink-jet cartridge provided with an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, and a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion, and a filter at an end of the supply tube; the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to an apparent volume V 6 of the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 51
Dependent Claim
13 words
The ink-jet cartridge of claim 44, wherein the ink-absorbent member comprises a polyurethane.
Claim 52
Dependent Claim
22 words
The ink-jet cartridge of claim 44, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 53
Dependent Claim
25 words
The ink-jet cartridge of claim 44, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 54
Dependent Claim
26 words
The ink-jet cartridge of claim 44, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦K·p≦150 [inch.sup.-1 ](IV)
Claim 55
Dependent Claim
14 words
The ink-jet cartridge of claim 44, wherein ink is held in the ink-storing portion.
Claim 56
Dependent Claim
19 words
The ink-jet cartridge of claim 49, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 57
Dependent Claim
14 words
The ink-jet cartridge of claim 50, wherein the coloring matter is a water-soluble dye.
Claim 58
Dependent Claim
30 words
The ink-jet cartridge of claim 44, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 59
Dependent Claim
140 words
An ink-jet recording apparatus provided with an ink cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, a carriage for moving the ink-jet cartridge to a desired direction, and an electric signal supplying means for supplying an electric signal to the ejection energy-generating means; the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 60
Dependent Claim
140 words
An ink-jet recording apparatus provided with an ink cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, a carriage for moving the ink-jet cartridge to a desired direction, and an electric signal supplying means for supplying an electric signal to the ejection energy-generating means; the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 61
Dependent Claim
14 words
The ink-jet recording apparatus of claim 53, wherein the ink-absorbent member comprises a polyurethane.
Claim 62
Dependent Claim
23 words
The ink-jet recording apparatus of claim 53, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 63
Dependent Claim
26 words
The ink-jet recording apparatus of claim 53, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 64
Dependent Claim
28 words
The ink-jet recording apparatus of claim 53, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦r.sub.1 ·p≦150 [inch.sup.-1 ](II)
Claim 65
Dependent Claim
15 words
The ink-jet recording apparatus of claim 53, wherein ink is held in the ink-storing portion.
Claim 66
Dependent Claim
20 words
The ink-jet recording apparatus of claim 58, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 67
Dependent Claim
15 words
The ink-jet recording apparatus of claim 59, wherein the coloring matter is a water-soluble dye.
Claim 68
Dependent Claim
31 words
The ink-jet recording apparatus of claim 53, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 69
Dependent Claim
160 words
An ink-jet recording apparatus provided with an ink cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, a carriage for moving the ink-jet cartridge to a desired direction, and an electric signal supplying means for supplying an electric signal to the ejection energy-generating means; the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to an apparent volume V 6 of the porous material in an ink-impregnated state encased in the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 70
Dependent Claim
160 words
An ink-jet recording apparatus provided with an ink cartridge having an ejection energy-generating means for ejecting ink and an ink storing portion encasing an ink-absorbent member for holding ink to be supplied to the ejection energy-generating means, a carriage for moving the ink-jet cartridge to a desired direction, and an electric signal supplying means for supplying an electric signal to the ejection energy-generating means; the ink-absorbent member comprising a porous material having therein open cells, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to an apparent volume V 6 of the porous material in an ink-impregnated state encased in the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 71
Dependent Claim
14 words
The ink-jet recording apparatus of claim 62, wherein the ink-absorbent member comprises a polyurethane.
Claim 72
Dependent Claim
23 words
The ink-jet recording apparatus of claim 62, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 73
Dependent Claim
26 words
The ink-jet recording apparatus of claim 62, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 74
Dependent Claim
27 words
The ink-jet recording apparatus of claim 62, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦K·p≦150 [inch.sup.-1 ](IV)
Claim 75
Dependent Claim
15 words
The ink-jet recording apparatus of claim 62, wherein ink is held in the ink-storing portion.
Claim 76
Dependent Claim
20 words
The ink-jet recording apparatus of claim 67, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 77
Dependent Claim
15 words
The ink-jet recording apparatus of claim 68, wherein the coloring matter is a water-soluble dye.
Claim 78
Dependent Claim
31 words
The ink-jet recording apparatus of claim 62, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 79
Dependent Claim
154 words
The ink-jet recording apparatus provided with an ink cartridge having an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion, and a filter at an end of the supply tube; the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 80
Dependent Claim
154 words
The ink-jet recording apparatus provided with an ink cartridge having an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion, and a filter at an end of the supply tube; the ink-absorbent member comprising a porous material having therein compressed open cells, the compression ratio r 1 of an apparent volume V 1 before compression to an apparent volume V 2 after compression (r 1 =V 1 /V 2 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦r.sub.1 ·p≦200 [inch.sup.-1 ](I)
Claim 81
Dependent Claim
14 words
The ink-jet recording apparatus of claim 71, wherein the ink-absorbent member comprises a polyurethane.
Claim 82
Dependent Claim
23 words
The ink-jet recording apparatus of claim 71, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 83
Dependent Claim
26 words
The ink-jet recording apparatus of claim 71, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 84
Dependent Claim
28 words
The ink-jet recording apparatus of claim 71, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦r.sub.1 ·p≦150 [inch.sup.-1 ](II)
Claim 85
Dependent Claim
15 words
The ink-jet recording apparatus of claim 71, wherein ink is held in the ink-storing portion.
Claim 86
Dependent Claim
20 words
The ink-jet recording apparatus of claim 76, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 87
Dependent Claim
15 words
The ink-jet recording apparatus of claim 77, wherein the coloring matter is a water-soluble dye.
Claim 88
Dependent Claim
31 words
The ink-jet recording apparatus of claim 71, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
Claim 89
Dependent Claim
151 words
The ink-jet recording apparatus provided with an ink cartridge having an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, and a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion; the ink-absorbent member comprising a porous material, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to the volume V 6 of the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 90
Dependent Claim
151 words
The ink-jet recording apparatus provided with an ink cartridge having an ink-storing portion having separately an air-communicating opening and an ink-discharging portion for supplying ink outside and encasing an ink-absorbent member therein, an ejection energy-generating means for ejecting ink, an ink chamber for holding ink to be supplied to the ejection energy-generating means, and a supply tube for supplying ink pressed into an ink-absorbent member in the ink-storing portion; the ink-absorbent member comprising a porous material, the volume ratio K of an apparent volume V 5 of the porous material in a dried and no-ink-containing state outside the ink storing portion to the volume V 6 of the ink storing portion (K=V 5 /V 6 ) and the cell number p represented by number of cells per inch in the state of V 1 satisfying the relation (I) below, and p being not more than 60: 100 [inch.sup.-1 ]≦K·p≦200 [inch.sup.-1 ](III)
Claim 91
Dependent Claim
14 words
The ink-jet recording apparatus of claim 80, wherein the ink-absorbent member comprises a polyurethane.
Claim 92
Dependent Claim
23 words
The ink-jet recording apparatus of claim 80, wherein the ink-absorbent member has an apparent density of not higher than 0.20 g/cm 3 .
Claim 93
Dependent Claim
26 words
The ink-jet recording apparatus of claim 80, wherein the cell number p is in the range of from 20 inch -1 to 60 inch -1 .
Claim 94
Dependent Claim
27 words
The ink-jet recording apparatus of claim 80, wherein the compression ratio r 1 and the cell number p satisfies Formula (II) below: 120 [inch.sup.-1 ]≦K·p≦150 [inch.sup.-1 ](IV)
Claim 95
Dependent Claim
15 words
The ink-jet recording apparatus of claim 80, wherein ink is held in the ink-storing portion.
Claim 96
Dependent Claim
20 words
The ink-jet recording apparatus of claim 85, wherein the ink comprises water, a water-soluble organic solvent, and a coloring matter.
Claim 97
Dependent Claim
15 words
The ink-jet recording apparatus of claim 86, wherein the coloring matter is a water-soluble dye.
Claim 98
Dependent Claim
31 words
The ink-jet recording apparatus of claim 86, wherein the ejection energy-generating means is a heat energy generating means for causing film boiling in the ink in response to an electric signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-26 | 1996-07-27 | 1997-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-26 | 2000-07-27 | 2001-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-26 | 2004-07-27 | 2005-01-26 | $7700.00 | Window Closed / Lapsed |