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EP0407720A1
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Recording sheet
Assignee: AGC Inc
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Filing: 1990-05-30
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Granted: —
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Expires: 2010-05-30
Abstract
Abstract A recording sheet comprising a substrate and a porous layer of ink absorbent formed thereon, wherein the porous layer of ink absorbent is made mainly of pseude-boehmite.
Inventors
- 👤 Katsutoshi Misuda
- 👤 Hitoshi Kijimuta
- 👤 Takafumi Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 11:37
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
27 words
A recording sheet comprising a substrate and a porous layer of ink absorbent formed thereon, wherein the porous layer of ink absorbent is made mainly of pseude-boehmite.
Claim 2
Dependent Claim
27 words
A recording sheet comprising a substrate and a porous layer of ink absorbent formed thereon, wherein the porous layer of ink absorbent is made mainly of pseude-boehmite.
Claim 3
Dependent Claim
21 words
The recording sheet according to Claim 1, wherein the porous layer of ink absorbent consists essentially of pseudo-boehmite and a binder.
Claim 4
Dependent Claim
25 words
The recording sheet according to Claim 1, wherein the layer of ink absorbent does not substantially have pores with a pore radius exceeding 100 Å.
Claim 5
Dependent Claim
35 words
The recording sheet according to Claim 1, wherein the total volume of pores with a pore radius of from 10 to 100 Å in the layer of ink absorbent is from 0.3 to 1.0 cc/g.
Claim 6
Dependent Claim
52 words
The recording sheet according to Claim 4, wherein the average pore radius of the layer of ink absorbent is from 15 to 30 Å, and the volume of pores with a radius within a range of ±10 Å of the average pore radius, is at least 55% of the total pore volume.
Claim 7
Dependent Claim
52 words
the recording sheet according to Claim 4, wherein the average pore radius in the layer of ink absorbent is from 30 to 50 Å, and the volume of pores with a radius within a range of ±10 Å of the average pore radius, is at least 45% of the total pore volume.
Claim 8
Dependent Claim
13 words
The recording sheet according to Claim 1, wherein the substrate is a plastic.
Claim 9
Dependent Claim
17 words
The recording sheet according to Claim 1, which is a recording sheet for an ink jet printer.
Claim 10
Dependent Claim
42 words
A recording sheet comprising a substrate and a layer of ink absorbent formed thereon, wherein the layer of ink absorbent has a double layer structure comprising a layer made mainly of pseudo-boehmite and a layer made of fine silica powder, formed thereon.
Claim 11
Dependent Claim
42 words
A recording sheet comprising a substrate and a layer of ink absorbent formed thereon, wherein the layer of ink absorbent has a double layer structure comprising a layer made mainly of pseudo-boehmite and a layer made of fine silica powder, formed thereon.
Claim 12
Dependent Claim
26 words
The recording sheet according to Claim 9, wherein the fine silica powder layer is designed to be peeled off after printing by an ink jet printer.
References Cited (Backward Citations)
EP0298424A2
Cited
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