EP0280458A1
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EP
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Recording liquid and recording method by use thereof
Assignee: Canon Inc
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Filing: 1988-02-16
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Granted: —
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Expires: 2008-02-16
Abstract
Abstract A recording liquid is provided which comprises a dye as a component for forming an image and a liquid medium for dissolving or dispersing said dye, the liquid containing a compound having a three-dimensional molecular structure with an empty space therein, and having a molecular weight of 400 or more and a solubility of 3% or more in water. The compound may be a cyclic compound having a plural number of pyranose rings. A recording method employing the above-mentioned recording liquid is also provided.
Inventors
- 👤 Yasuko Tomida
- 👤 Shoji Koike
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:03
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
56 words
A recording liquid, comprising a dye as a component for forming an image and a liquid medium for dissolving or dispersing said dye, said liquid containing a compound having a three-dimensional molecular structure with an empty space therein, and having a molecular weight of 400 or more and a solubility of 3% or more in water.
Claim 2
Dependent Claim
56 words
A recording liquid, comprising a dye as a component for forming an image and a liquid medium for dissolving or dispersing said dye, said liquid containing a compound having a three-dimensional molecular structure with an empty space therein, and having a molecular weight of 400 or more and a solubility of 3% or more in water.
Claim 3
Dependent Claim
18 words
A recording liquid according to Claim 1, wherein said compound has a molecular weight of 800 or more.
Claim 4
Dependent Claim
45 words
A recording liquid, comprising a dye as a component for forming an image and a liquid medium for dissolving or dispersing said dye, said liquid having a solubility of 3% or more in water and containing a cyclic compound having a plurality of pyranose rings.
Claim 5
Dependent Claim
45 words
A recording liquid, comprising a dye as a component for forming an image and a liquid medium for dissolving or dispersing said dye, said liquid having a solubility of 3% or more in water and containing a cyclic compound having a plurality of pyranose rings.
Claim 6
Dependent Claim
17 words
A recording liquid according to Claim 3, wherein said cyclic compound is cyclodextrin or a derivative thereof.
Claim 7
Dependent Claim
20 words
A recording liquid according to any preceding claim, wherein said compound has a solubility of 5% or more in water.
Claim 8
Dependent Claim
32 words
A recording liquid according to any preceding claim, therein the content of said compound is within the range of 0.1 to 20% by weight of the total weight of the recording liquid.
Claim 9
Dependent Claim
15 words
A recording liquid according to any preceding claim, wherein said dye is a water-soluble dye.
Claim 10
Dependent Claim
19 words
A recording liquid according to any preceding claim, having a viscosity at 25 °C of 5 cp or less.
Claim 11
Dependent Claim
18 words
A recording liquid according to Claim 8, having a viscosity of 25 °C of 3 cp or less.
Claim 12
Dependent Claim
19 words
A recording liquid according to any preceding claim, having a surface tension at 25°C of 35 to 65 dyne/cm.
Claim 13
Dependent Claim
22 words
A recording method which performs recording by attaching onto a recording medium, droplets of a recording liquid according to any preceding claim.
Claim 14
Dependent Claim
14 words
A recording method according to Claim 11, wherein said recording medium is sized paper.
Claim 15
Dependent Claim
33 words
13 An ink jet recording method which performs recording by ejecting at a driving frequency of 1 kHz or higher droplets of a recording liquid according to any of claims 1 to 10.
Claim 16
Dependent Claim
22 words
An ink jet recording method according to Claim 13, wherein the ejection system of the recording liquid is of an on-demand type.
Claim 17
Dependent Claim
17 words
An ink jet recording method according to Claim 13, wherein the ejection system utilizes a piezoelectric element.
Claim 18
Dependent Claim
16 words
An ink jet recording method according to claim 13, wherein the ejection system utilizes heat energy.
References Cited (Backward Citations)
No citation records indexed.
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