US4597794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording process and a recording liquid thereof
Assignee: Canon Inc
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Filing: 1984-07-03
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Granted: 1986-07-01
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Expires: 2004-07-03
Abstract
Abstract In an ink-jet recording process which comprises forming droplets of an ink and recording on an image receiving material by using the droplets, said ink is prepared by dispersing fine particles of pigment into aqueous dispersion medium containing polymer having both a hydrophilic and a hydrophobic construction portion. An average particle size (D micron) of the pigment and an average molecular weight of the polymer satisfy the relationship represented by the following equation. D×5×10.sup.2 ≦W And the ratio of molecular weight of the pigment to average molecular weight of the polymer is a value in the range from 1:2 to 1:150.
Inventors
- 👤 Tokuya Ohta
- 👤 Yasuhiro Yano
- 👤 Yohji Matsufuji
- 👤 Masahiro Haruta
- 👤 Tsuyoshi Eida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; C09D11/326; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
An ink-jet recording process which comprises forming droplets of an ink and recording on an image receiving material by using the droplets, said ink being prepared by dispersing fine particles of pigment into an aqueous dispersion medium containing a polymer which has both an ethylenically unsaturated carboxylic acid substituent as a hydrophilic portion and an aromatic ring substituent as a hydrophobic portion and an average molecular weight sufficient to contribute to the dispersion stability of said pigment particles without increasing the viscosity of the ink higher than about 20 cps and wherein said hydrophilic portion constitutes from 2 to 40 weight percent of said polymer.
Claim 2
Dependent Claim
105 words
An ink-jet recording process which comprises forming droplets of an ink and recording on an image receiving material by using the droplets, said ink being prepared by dispersing fine particles of pigment into an aqueous dispersion medium containing a polymer which has both an ethylenically unsaturated carboxylic acid substituent as a hydrophilic portion and an aromatic ring substituent as a hydrophobic portion and an average molecular weight sufficient to contribute to the dispersion stability of said pigment particles without increasing the viscosity of the ink higher than about 20 cps and wherein said hydrophilic portion constitutes from 2 to 40 weight percent of said polymer.
Claim 3
Dependent Claim
28 words
A process according to claim 1 in which droplets are formed after said ink is projected from a fine opening of 10 microns to 200 microns in diameter.
Claim 4
Dependent Claim
21 words
A process according to claim 1 in which viscosity of the ink is a value in the range from 1-20 cps.
Claim 5
Dependent Claim
31 words
A process according to claim 1 in which the polymer forms a salt with a member selected from the group consisting of alkali metal, aliphatic amine, alcoholamine, morpholine, and N-methyl morpholine.
Claim 6
Dependent Claim
48 words
A process according to claim 1 in which the hydrophilic portion is introduced into the polymer by using a member selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, itaconic acid, itaconic acid mono-ester, maleic acid, maleic acid mono-ester, fumaric acid, and fumaric acid mono-ester.
Claim 7
Dependent Claim
30 words
A process according to claim 1 in which the hydrophobic portion is introduced into the polymer by using a member selected from the group consisting of styrene, and styrene derivatives.
Claim 8
Dependent Claim
13 words
A process according to claim 1 in which the polymer is a copolymer.
Claim 9
Dependent Claim
32 words
A process according to claim 1 in which the polymer is used in an amount of the range from 5 to 300 parts by weight per 100 parts by weight of pigment.
Claim 10
Dependent Claim
15 words
A process according to claim 1 in which the aqueous dispersion medium consists of water.
Claim 11
Dependent Claim
22 words
A process according to claim 1 in which the aqueous dispersion medium consists of a mixture of water and water-soluble organic solvent.
Claim 12
Dependent Claim
14 words
A process according to claim 1 in which the image receiving material is paper.
Claim 13
Dependent Claim
14 words
A process according to claim 1 in which the image receiving material is fabric.
Claim 14
Dependent Claim
29 words
A process according to claim 1 in which the hydrophobic portion is introduced into the polymer by using a member selected from the group consisting of styrene, styrene derivatives.
References Cited (Backward Citations)
US3846141A
Cited
US4153593A
Cited
US4176361A
Cited
US4279653A
Cited
US4150997A
Cited
US4281329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |