US4801497A
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Recording medium
Assignee: Canon Inc
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Filing: 1986-12-04
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Granted: 1989-01-31
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Expires: 2006-12-04
Abstract
Abstract A recording medium comprises an ink receiving layer provided on a substrate, wherein said ink receiving layer contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen.
Inventors
- 👤 Shunzo Kono
- 👤 Hidemasa Mouri
- 👤 Michiaki Tobita
- 👤 Masahiko Ishida
- 👤 Naonobu Eto
- 👤 Takashi Akiya
- 👤 Shigeo Toganoh
- 👤 Masahiko Higuma
- 👤 Mamoru Sakaki
- 👤 Ryuichi Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:17
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5245; B41M5/5254; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
71 words
A recording medium, comprising: an ink receiving layer provided on a substrate, wherein said ink receiving layer contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen, said water soluble polymer being contained in an amount of from 1-33 parts by weight per 100 parts by weight of cationically modified product, and wherein said recording medium has a linear transmittance of at least 2%.
Claim 2
Dependent Claim
71 words
A recording medium, comprising: an ink receiving layer provided on a substrate, wherein said ink receiving layer contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen, said water soluble polymer being contained in an amount of from 1-33 parts by weight per 100 parts by weight of cationically modified product, and wherein said recording medium has a linear transmittance of at least 2%.
Claim 3
Dependent Claim
16 words
The recording medium according to claim 1, wherein said ink receiving layer has a smooth surface.
Claim 4
Dependent Claim
28 words
The recording medium according to claim 1, wherein the surface of said ink receiving layer has a 45° specular gloss of 30% or more according to JIS Z-8741.
Claim 5
Dependent Claim
21 words
The recording medium according to claim 1, wherein said ink receiving layer has a thickness ranging between 1 and 200 μm.
Claim 6
Dependent Claim
21 words
The recording medium according to claim 1, wherein said ink receiving layer has a thickness ranging between 5 and 100 μm.
Claim 7
Dependent Claim
31 words
The recording medium according to claim 1, wherein said cationically modified product of polyvinyl alcohol is a polyvinyl alcohol having a cationic group in a main chain or a side chain.
Claim 8
Dependent Claim
24 words
The recording medium according to claim 6, wherein said cationic group is a primary to tertiary amino group or a quaternary ammonium salt group.
Claim 9
Dependent Claim
30 words
The recording medium according to claim 6, wherein the cationic group of the cationically modified product of PVA is present in an amount ranging between 0.05 and 20 mole %.
Claim 10
Dependent Claim
23 words
The recording medium according to claim 1, wherein the polymerization degree of the cationically modified product of PVA ranges from 500 and 5,000.
Claim 11
Dependent Claim
52 words
The recording medium according to claim 1, wherein said water soluble polymer having no active hydrogen is a material selected from the group consisting of a polymer of vinyl pyrrolidone or derivatives thereof, a polymer of vinyl monomers, a random copolymer, a block copolymer and a graft copolymer thereof with other monomers.
Claim 12
Dependent Claim
84 words
A recording medium, comprising: an ink receiving layer provided on a substrate, wherein said ink receiving layer is non-porous and contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen, said water soluble polymer being contained in an amount of from 1-33 parts by weight per 100 parts by weight of cationically modified product, and wherein a recording surface of the ink receiving layer has a 45° specular gloss of at least 30% according to JIS Z-8741.
Claim 13
Dependent Claim
84 words
A recording medium, comprising: an ink receiving layer provided on a substrate, wherein said ink receiving layer is non-porous and contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen, said water soluble polymer being contained in an amount of from 1-33 parts by weight per 100 parts by weight of cationically modified product, and wherein a recording surface of the ink receiving layer has a 45° specular gloss of at least 30% according to JIS Z-8741.
Claim 14
Dependent Claim
19 words
The recording medium according to claim 11, wherein said recording medium has a linear transmittance of 2% or more.
Claim 15
Dependent Claim
16 words
The recording medium according to claim 11, wherein said ink receiving layer has a smooth surface.
Claim 16
Dependent Claim
21 words
The recording medium according to claim 11, wherein said ink receiving layer has a thickness ranging between 1 and 200 μm.
Claim 17
Dependent Claim
21 words
The recording medium according to claim 11, wherein said ink receiving layer has a thickness ranging between 5 and 100 μm.
Claim 18
Dependent Claim
31 words
The recording medium according to claim 11, wherein said cationically modified product of polyvinyl alcohol is a polyvinyl alcohol having a cationic group in a main chain or a side chain.
Claim 19
Dependent Claim
24 words
The recording medium according to claim 16, wherein said cationic group is a primary to tertiary amino group or a quaternary ammonium salt group.
Claim 20
Dependent Claim
30 words
The recording medium according to claim 16, wherein the cationic group of the cationically modified product of PVA is present in an amount ranging between 0.05 and 20 mole %.
Claim 21
Dependent Claim
23 words
The recording medium according to claim 16, wherein the polymerization degree of the cationically modified product of PVA ranges between 500 and 5,000.
Claim 22
Dependent Claim
53 words
The recording medium according to claim 11, wherein said water soluble polymer having no active hydrogen is a material selected from the group of consisting of a polymer of vinyl pyrrolidone or derivatives thereof, a polymer of vinyl monomers, a random copolymer, a block copolymer and a graft copolymer thereof with other monomers.
Claim 23
Dependent Claim
66 words
A recording medium comprising an ink receiving layer provided on a substrate, wherein said ink receiving layer contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen, and said water soluble polymer is contained in an amount ranging between 1 part by weight and 33 parts by weight based on 100 parts by weight of said cationically modified product.
Claim 24
Dependent Claim
66 words
A recording medium comprising an ink receiving layer provided on a substrate, wherein said ink receiving layer contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen, and said water soluble polymer is contained in an amount ranging between 1 part by weight and 33 parts by weight based on 100 parts by weight of said cationically modified product.
Claim 25
Dependent Claim
16 words
The recording medium according to claim 21, wherein said ink receiving layer has a smooth surface.
Claim 26
Dependent Claim
28 words
The recording medium according to claim 21, wherein the surface of said ink receiving layer has a 45° specular gloss of 30% or more according to JIS Z-8741.
Claim 27
Dependent Claim
21 words
The recording medium according to claim 21, wherein said ink receiving layer has a thickness ranging between 1 and 200 μm.
Claim 28
Dependent Claim
21 words
The recording medium according to claim 21, wherein said ink receiving layer has a thickness ranging between 5 and 100 μm.
Claim 29
Dependent Claim
31 words
The recording medium according to claim 21, wherein said cationically modified product of polyvinyl alcohol is a polyvinyl alcohol having a cationic group in a main chain or a side chain.
Claim 30
Dependent Claim
24 words
The recording medium according to claim 26, wherein said cationic group is a primary to tertiary amino group or a quaternary ammonium salt group.
Claim 31
Dependent Claim
30 words
The recording medium according to claim 26, wherein the cationic group of the cationically modified product of PVA is present in an amount ranging between 0.05 and 20 mole %.
Claim 32
Dependent Claim
23 words
The recording medium according to claim 21, wherein the polymerization degree of the cationically modified product of PVA ranges between 500 and 5,000.
Claim 33
Dependent Claim
52 words
The recording medium according to claim 21, wherein said water soluble polymer having no active hydrogen is a material selected from the group consisting of a polymer of vinyl pyrrolidone or derivatives thereof, a polymer of vinyl monomers, a random copolymer, a block copolymer and a graft copolymer thereof with other monomers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |