US4879166A
Expired / Lapsed
US
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Carrier medium for a coloring matter
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1988-07-07
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Granted: 1989-11-07
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Expires: 2008-07-07
Abstract
Abstract A carrier medium for a coloring matter, which comprises an ink absorbent and a substance present on the surface of the absorbent, which has an adsorptivity of from 20 to 100 mg/g.
Inventors
- 👤 Katsutoshi Misuda
- 👤 Takafumi Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:58
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24942; Y10T428/249921; Y10T428/249953; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
49 words
A carrier medium for a coloring matter, which comprises a substrate having thereon a particulate ink absorbent, and a substance selected from the group consisting of alumina, alumina hydrate and pseudo-boehmite present on the surface of the absorbent, which substance has an adsorptivity of from 20 to 100 mg/g.
Claim 2
Dependent Claim
49 words
A carrier medium for a coloring matter, which comprises a substrate having thereon a particulate ink absorbent, and a substance selected from the group consisting of alumina, alumina hydrate and pseudo-boehmite present on the surface of the absorbent, which substance has an adsorptivity of from 20 to 100 mg/g.
Claim 3
Dependent Claim
46 words
The carrier medium for a coloring matter according to claim 1, wherein the ink absorbent has an average particle diameter of from 2 to 50 μm, an average pore diameter of from 80 to 500 Å and a pore volume of from 0.8 to 2.5 cc/g.
Claim 4
Dependent Claim
19 words
The carrier medium for a coloring matter according to claim 1 or 2, wherein the ink absorbent is silica.
Claim 5
Dependent Claim
48 words
The carrier medium for a coloring matter according to claim 1, wherein the substance having an adsorptivity of from 20 to 100 mg/g is alumina or alumina hydrate having a total volume of pores having radii of from 30 to 100 Å of from 0.2 to 1.5 cc/g.
Claim 6
Dependent Claim
27 words
The carrier medium for a coloring matter according to claim 1 or 4, wherein the substance having an adsorptivity of from 20 to 100 mg/g is pseudo-boehmite.
Claim 7
Dependent Claim
20 words
The carrier medium for a coloring matter according to claim 1, wherein the ink absorbent contains a thioether type antioxidant.
Claim 8
Dependent Claim
90 words
A carrier medium for a coloring matter, which comprises a substrate having thereon a particulate ink absorbent having a two layer structure comprising an under layer of ink absorbent having a relatively large particle diameter and an upper layer of ink absorbent having an average particle diameter smaller than that of the ink absorbent of the lower layer, and a substance selected from the group consisting of alumina, alumina hydrate and pseudoboehmite present on the surface of the absorbent, which substance have an adsorptivity of from 20 to 100 mg/g.
Claim 9
Dependent Claim
90 words
A carrier medium for a coloring matter, which comprises a substrate having thereon a particulate ink absorbent having a two layer structure comprising an under layer of ink absorbent having a relatively large particle diameter and an upper layer of ink absorbent having an average particle diameter smaller than that of the ink absorbent of the lower layer, and a substance selected from the group consisting of alumina, alumina hydrate and pseudoboehmite present on the surface of the absorbent, which substance have an adsorptivity of from 20 to 100 mg/g.
Claim 10
Dependent Claim
95 words
A carrier medium for a coloring matter, which comprises a substrate having thereon a particulate ink absorbent having a two layer structure comprising an under layer of ink absorbent having a relatively large average particle diameter and an upper layer of absorbent particles having an average particle diameter smaller than that of the ink absorbent of the lower layer, and a substance selected from the group consisting of alumina, alumina hydrate and pseudo-boehmite present on the surface of the upper layer of ink absorbent, which substance has an adsorptivity of from 20 to 100 mg/g.
Claim 11
Dependent Claim
95 words
A carrier medium for a coloring matter, which comprises a substrate having thereon a particulate ink absorbent having a two layer structure comprising an under layer of ink absorbent having a relatively large average particle diameter and an upper layer of absorbent particles having an average particle diameter smaller than that of the ink absorbent of the lower layer, and a substance selected from the group consisting of alumina, alumina hydrate and pseudo-boehmite present on the surface of the upper layer of ink absorbent, which substance has an adsorptivity of from 20 to 100 mg/g.
Claim 12
Dependent Claim
53 words
The carrier medium for a coloring matter according to claim 7 or 8, wherein a ratio of A/B is from 0.05 to 0.6 where A is the average particle diameter of the ink adsorbent constituting the upper layer and B is the average particle diameter of the ink absorbent constituting the lower layer.
Claim 13
Dependent Claim
51 words
The carrier medium for a coloring matter according to claim 7 or 8, wherein the average particle diameter of the ink absorbent constituting the upper layer if from 1 to 20 μm and the average particle diameter of the ink absorbent constituting the under layer is from 2 to 50 μm.
Claim 14
Dependent Claim
56 words
The carrier medium for a coloring matter according to claim 7 or 8, wherein both the ink absorbent having a relatively large average particle diameter and the ink absorbent having a smaller average particle diameter have an average pore diameter of from 80 to 500 Å and a pore volume of from 0.8 to 2.5 cc/g.
Claim 15
Dependent Claim
48 words
The carrier medium for a coloring matter according to claim 8, wherein the substance having an adsorptivity of from 20 to 100 mg/g is alumina or alumina hydrate having a total volume of pores having radii of from 30 to 100 Å of from 0.2 to 1.5 cc/g.
Claim 16
Dependent Claim
25 words
The carrier medium for a coloring matter according to claim 8, wherein the substance having an adsorptivity of from 20 to 100 mg/g is pseudo-boehmite.
Claim 17
Dependent Claim
43 words
The carrier medium for a coloring matter according to claim 7 or 8, wherein at least one of the ink absorbent having a relatively large average particle diameter and the ink absorbent having a smaller average particle diameter contains a thioether type antioxidant.
References Cited (Backward Citations)
US4460637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |