US4533614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-fixable dry system toner
Assignee: Canon Inc
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Filing: 1983-05-31
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Granted: 1985-08-06
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Expires: 2003-05-31
Abstract
Abstract A toner, fixable sufficiently at lower temperatures to afford energy saving, particularly suitable for high speed fixing and also good in off-set resistance with a broad applicable temperature range for fixing, is obtained from a heat-fixable dry system toner comprising in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) a dicarboxylic acid, and (D) an etherated diphenol.
Inventors
- 👤 Hiroshi Fukumoto
- 👤 Sukejiro Inoue
- 👤 Masumi Sasakawa
- 👤 Shinji Doi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:54
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08742; G03G9/08755; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/105
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
64 words
A heat-fixable dry system toner powder comprising a colorast and in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) an aromatic dicarboxylic acid, and (D) an etherated diphenol.
Claim 2
Dependent Claim
64 words
A heat-fixable dry system toner powder comprising a colorast and in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) an aromatic dicarboxylic acid, and (D) an etherated diphenol.
Claim 3
Dependent Claim
35 words
A heat-fixable dry system toner powder according to claim 1, wherein the toner further contains 0.2 to 4% by weight of an organometallic compound containing a divalent or more metal based on the binder resin.
Claim 4
Dependent Claim
45 words
A heat-fixable dry system toner powder according to claim 2, wherein the toner has the melt-flow characteristics as measured by the flow-tester of a flowing point of 100° to 130° C. and a melt-flow viscosity of 10 4 to 10 6 poise at 110° C.
Claim 5
Dependent Claim
83 words
A heat-fixable dry system toner powder comprising a colorant and in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) 10 to 25 wt. % of an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol based on the polyester, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) 50 mole % of an aromatic dicarboxylic acid in the total acid component, and (D) an etherated diphenol.
Claim 6
Dependent Claim
83 words
A heat-fixable dry system toner powder comprising a colorant and in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) 10 to 25 wt. % of an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol based on the polyester, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) 50 mole % of an aromatic dicarboxylic acid in the total acid component, and (D) an etherated diphenol.
Claim 7
Dependent Claim
33 words
A heat-fixable dry system toner powder according to claim 4, wherein the alkyl-substituted dicarboxylic acid is selected from aliphatic acids substituted with alkyl groups having 6 to 18 carbon atoms or anhydrides thereof.
Claim 8
Dependent Claim
24 words
A heat-fixable dry system toner powder according to claim 5, wherein the aliphatic acids are selected from succinic acid, maleic acid, and fumaric acid.
Claim 9
Dependent Claim
29 words
A heat-fixable dry system toner powder according to claim 4, wherein the alkyl-substituted diol is an aliphatic diol substituted with an alkyl group having 6 to 18 carbon atoms.
Claim 10
Dependent Claim
17 words
A heat-fixable dry system toner powder according to claim 7, wherein the aliphatic diol is ethylene glycol.
Claim 11
Dependent Claim
36 words
A heat-fixable dry system toner powder according to claim 4, wherein 60 mole % or more of the total amount of trivalent or more polycarboxylic acids are selected from trimellitic acid, pyromellitic acid, and anhydrides thereof.
Claim 12
Dependent Claim
31 words
A heat-fixable dry system toner powder according to claim 4, wherein 60 mole % or more the total amount of trivalent or more polyols are selected from glycerine, pentaerythritol, and sorbitol.
Claim 13
Dependent Claim
24 words
A heat-fixable dry system toner powder according to claim 4, wherein 60 wt. % or more of the binder resin is a polyester resin.
Claim 14
Dependent Claim
19 words
A heat-fixable dry system toner powder according to claim 4, wherein the binder resin contains a styrene-acrylic typre resin.
Claim 15
Dependent Claim
26 words
A heat-fixable dry system toner powder according to claim 4, wherein the toner contains 20 to 60 wt. % of an iron oxide type magnetic material.
Claim 16
Dependent Claim
125 words
A heat-fixable dry system toner powder comprising a colorant and a binder resin, containing a non-linearly modified low melting aromatic polyester having an acid value of 10 to 60 obtained from components containing (A) 30 mole % or less of an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol in the acid or alcohol component, (B) 40 mole % or less of a trivalent or more polycarboxylic acid and/or a trivalent or more polyol in the acid or alcohol component, (C) 60 mole % or more of a dicarboxylic acid of phthalic acid type in the dicarboxylic acid component, and (D) an etherated diphenol, and 0.2 to 4 % by weight of an organometallic compound containing a divalent or more metal based on said binder resin.
Claim 17
Dependent Claim
125 words
A heat-fixable dry system toner powder comprising a colorant and a binder resin, containing a non-linearly modified low melting aromatic polyester having an acid value of 10 to 60 obtained from components containing (A) 30 mole % or less of an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol in the acid or alcohol component, (B) 40 mole % or less of a trivalent or more polycarboxylic acid and/or a trivalent or more polyol in the acid or alcohol component, (C) 60 mole % or more of a dicarboxylic acid of phthalic acid type in the dicarboxylic acid component, and (D) an etherated diphenol, and 0.2 to 4 % by weight of an organometallic compound containing a divalent or more metal based on said binder resin.
Claim 18
Dependent Claim
33 words
A heat-fixable dry system toner powder according to claim 14, wherein the alkyl-substituted dicarboxylic acid is selected from aliphatic acids substituted with alkyl groups having 6 to 18 carbon atoms or anhydrides thereof.
Claim 19
Dependent Claim
24 words
A heat-fixable dry system toner powder according to claim 15, wherein the aliphatic acids are selected from succinic acid, maleic acid, and fumaric acid.
Claim 20
Dependent Claim
29 words
A heat-fixable dry system toner powder according to claim 14, wherein the alkyl-substituted diol is an aliphatic diol substituted with an alkyl group having 6 to 18 carbon atoms.
Claim 21
Dependent Claim
17 words
A heat-fixable dry system toner powder according to claim 17, wherein the aliphatic diol is ethylene glycol.
Claim 22
Dependent Claim
36 words
A heat-fixable dry system toner powder according to claim 14, wherein 60 mole % or more of the total amount of trivalent or more polycarboxylic acids are selected from trimellitic acid, pyromellitic acid, and anhydrides thereof.
Claim 23
Dependent Claim
31 words
A heat-fixable dry system toner powder according to claim 14, wherein 60 mole % or more the total amount of trivalent or more polyols are selected from glycerine, pentaerythritol, and sorbitol.
Claim 24
Dependent Claim
24 words
A heat-fixable dry system toner powder according to claim 14, wherein 60 wt. % or more of the binder resin is a polyester resin.
Claim 25
Dependent Claim
19 words
A heat-fixable dry system toner powder according to claim 14, wherein the binder resin contains a styrene-acrylic type resin.
Claim 26
Dependent Claim
26 words
A heat-fixable dry system toner powder according to claim 14, wherein the toner contains 20 to 60 wt. % of an iron oxide type magnetic material.
Claim 27
Dependent Claim
23 words
A heat-fixable dry system toner powder according to claim 14, wherein the polyester has a glass transition temperature of 50° to 80° C.
Claim 28
Dependent Claim
22 words
A heat-fixable dry system toner powder according to claim 14, wherein the polyester has a softening point of 60° to 130° C.
Claim 29
Dependent Claim
19 words
A heat-fixable dry system toner powder according to claim 14, wherein the organometallic compound is an acetylacetone metal complex.
Claim 30
Dependent Claim
21 words
A heat-fixable dry system toner powder according to claim 14, wherein the organometallic compound is a salicylic acid type metal salt.
Claim 31
Dependent Claim
61 words
A dry system toner powder for hot roller fixing, which is a toner using a polyester crosslinked with a polyvalent metal compound as the main binder resin, said toner having the melt-flow characteristics as measured by the flow-tester of a flowing point of 100° to 130° C. and a melt-flow viscosity of 10 4 to 10 6 poise at 110° C.
Claim 32
Dependent Claim
61 words
A dry system toner powder for hot roller fixing, which is a toner using a polyester crosslinked with a polyvalent metal compound as the main binder resin, said toner having the melt-flow characteristics as measured by the flow-tester of a flowing point of 100° to 130° C. and a melt-flow viscosity of 10 4 to 10 6 poise at 110° C.
Claim 33
Dependent Claim
41 words
In a process for electrostatic imaging wherein a developed image is transferred and thereafter fixed by a hot roller, the improvement which comprises employing as a toner for developing said image, the heat fixable dry system toner powder of claim 1.
Claim 34
Dependent Claim
41 words
In a process for electrostatic imaging wherein a developed image is transferred and thereafter fixed by a hot roller, the improvement which comprises employing as a toner for developing said image, the heat fixable dry system toner powder of claim 4.
Claim 35
Dependent Claim
41 words
In a process for electrostatic imaging wherein a developed image is transferred and thereafter fixed by a hot roller, the improvement which comprises employing as a toner for developing said image, the heat fixable dry system toner powder of claim 14.
Claim 36
Dependent Claim
41 words
In a process for electrostatic imaging wherein a developed image is transferred and thereafter fixed by a hot roller, the improvement which comprises employing as a toner for developing said image, the heat fixable dry system toner powder of claim 28.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |