US5266383A
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Recording medium and ink jet recording method by use thereof
Assignee: Canon Inc
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Filing: 1992-08-27
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Granted: 1993-11-30
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Expires: 2012-08-27
Abstract
Abstract A recording medium comprises a surface layer composed mainly of aluminum oxide particles and a lower layer having ink absorptivity. A recording medium comprises a surface layer composed mainly of aluminum oxide particles and a lower layer having ink absorptivity, and having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 sec. An ink jet recording method performs recording by imparting small droplets of an aqueous ink to a recording medium, wherein said aqueous ink contains an acidic dye and/or a direct dye, and said recording medium comprises a surface layer composed mainly of aluminum oxide particles and a lower layer having ink absorptivity. A recording medium comprises a surface layer composed mainly of aluminum oxide particles containing polyaluminum hydroxide and/or polyaluminum chloride and a lower layer having ink absorptivity. A recording medium comprises a surface layer composed mainly of aluminum oxide particles having particle sizes of 5 μm or less provided on a liquid absorptive base paper.
Inventors
- 👤 Mamoru Sakaki
- 👤 Masako Shimomura
- 👤 Megumi Munakata
- 👤 Tomomi Nakatsugawa
- 👤 Hiroshi Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:21
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: 16
Claim 1
Independent Claim
126 words
A recording medium comprising: a surface layer composed mainly of aluminum oxide particles, said surface layer coated within the range of 0.3 to 7 gm/m 2 as the total amount of the pigments, said particles having a BET surface area within the range of 60 to 170 m 2 /g, and having an average particle size of 5 μm or less, and a lower layer having ink absorptivity, said lower layer being formed of paper that includes fibrous material, and has an ash content of 1 to 20 g/m 2 , and has a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds, wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the lower layer.
Claim 2
Dependent Claim
126 words
A recording medium comprising: a surface layer composed mainly of aluminum oxide particles, said surface layer coated within the range of 0.3 to 7 gm/m 2 as the total amount of the pigments, said particles having a BET surface area within the range of 60 to 170 m 2 /g, and having an average particle size of 5 μm or less, and a lower layer having ink absorptivity, said lower layer being formed of paper that includes fibrous material, and has an ash content of 1 to 20 g/m 2 , and has a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds, wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the lower layer.
Claim 3
Dependent Claim
22 words
A recording medium according to claim 1, wherein the aluminum oxide particles have an average particle size of 1 μm or less.
Claim 4
Dependent Claim
27 words
A recording medium according to claim 1, wherein the aluminum oxide particles comprise not less than 80% by weight of all the pigments in the surface layer.
Claim 5
Dependent Claim
169 words
An ink jet recording method comprising the step of: performing recording by imparting small droplets of an aqueous ink to a recording medium, wherein said aqueous ink contains at least one of an acidic dye and a direct dye, and said recording medium comprises: a surface layer composed mainly of aluminum oxide particles, said surface layer coated within the range of 0.3 to 7 g/m 2 as the total amount of the pigments, said particles having a BET surface area within the range of 60 to 170 m 2 /g, and having an average particle size of 5 μm or less, a lower layer having ink absorptivity, said lower layer being formed of paper that includes fibrous material, and has an ash content of 1 to 20 g/m 2 , wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the lower layer, and said recording medium further having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds.
Claim 6
Dependent Claim
169 words
An ink jet recording method comprising the step of: performing recording by imparting small droplets of an aqueous ink to a recording medium, wherein said aqueous ink contains at least one of an acidic dye and a direct dye, and said recording medium comprises: a surface layer composed mainly of aluminum oxide particles, said surface layer coated within the range of 0.3 to 7 g/m 2 as the total amount of the pigments, said particles having a BET surface area within the range of 60 to 170 m 2 /g, and having an average particle size of 5 μm or less, a lower layer having ink absorptivity, said lower layer being formed of paper that includes fibrous material, and has an ash content of 1 to 20 g/m 2 , wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the lower layer, and said recording medium further having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds.
Claim 7
Dependent Claim
27 words
An ink jet recording method according to claim 4, wherein said small droplets of the ink are formed by permitting heat energy to act on the ink.
Claim 8
Dependent Claim
146 words
A recording medium, comprising: a surface layer composed mainly of aluminum oxide particles, said surface layer coated within the range of 0.3 to 7 g/m 2 as the total amount of the pigments, said surface layer further containing at least one of polyaluminum hydroxide and polyaluminum chloride, said aluminum oxide particles having a BET surface area within the range of 60 to 170 m 2 /g, and having an average particle size of 5 μm or less, a lower layer having ink absorptivity, said lower layer being formed of paper that includes fibrous material, and has an ash content of 1 to 20 g/m 2 , and wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the lower layer, and said recording medium further having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds.
Claim 9
Dependent Claim
146 words
A recording medium, comprising: a surface layer composed mainly of aluminum oxide particles, said surface layer coated within the range of 0.3 to 7 g/m 2 as the total amount of the pigments, said surface layer further containing at least one of polyaluminum hydroxide and polyaluminum chloride, said aluminum oxide particles having a BET surface area within the range of 60 to 170 m 2 /g, and having an average particle size of 5 μm or less, a lower layer having ink absorptivity, said lower layer being formed of paper that includes fibrous material, and has an ash content of 1 to 20 g/m 2 , and wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the lower layer, and said recording medium further having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds.
Claim 10
Dependent Claim
22 words
A recording medium according to claim 6, wherein the aluminum oxide particles have an average particle size of 1 μm or less.
Claim 11
Dependent Claim
27 words
A recording medium according to claim 6, wherein the aluminum oxide particles comprise not less than 80% by weight of all the pigments in the surface layer.
Claim 12
Dependent Claim
30 words
A recording medium according to claim 6, wherein said polyaluminum hydroxide and/or polyaluminum chloride is contained in an amount within the range of from 0.01 to 5 g/m 2 .
Claim 13
Dependent Claim
124 words
A recording medium, comprising a surface layer composed mainly of aluminum oxide particles having a particle size of 5 μm or less provided on a liquid absorptive base paper, said surface layer coated within the range of 0.3 to 7 g/m 2 as the total amount of the pigments, said aluminum oxide particles having a BET surface area within the range of 60 to 170 m 2 /g, the liquid absorptive base paper having an ash content of 1 to 20 g/m 2 , and wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the base paper, and said recording medium further having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds.
Claim 14
Dependent Claim
124 words
A recording medium, comprising a surface layer composed mainly of aluminum oxide particles having a particle size of 5 μm or less provided on a liquid absorptive base paper, said surface layer coated within the range of 0.3 to 7 g/m 2 as the total amount of the pigments, said aluminum oxide particles having a BET surface area within the range of 60 to 170 m 2 /g, the liquid absorptive base paper having an ash content of 1 to 20 g/m 2 , and wherein the surface layer is in a mixture of aluminum oxide particles with the paper fibrous material of the base paper, and said recording medium further having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 seconds.
Claim 15
Dependent Claim
20 words
A recording medium according to claim 10, wherein said aluminum oxide particles have particle sizes of 1 μm or less.
Claim 16
Dependent Claim
27 words
A recording medium according to claim 10, wherein the aluminum oxide particles comprises not less than 80% by weight of all the pigments in the surface layer.
References Cited (Backward Citations)
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