US4699863A
Expired / Lapsed
US
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Electrophotographic flash fixation process employing toner having improved light absorption properties and toner therefor
Assignee: Fujifilm Business Innovation Corp
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Filing: 1985-11-21
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Granted: 1987-10-13
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Expires: 2005-11-21
Abstract
Abstract A flash fixing process characterized by using a powdery developing toner comprising at least 80% by weight of a bisphenol A/epichlorohydrin type epoxy resin or a polyester resin as the binder resin, 1 to 10% by weight of a dye or pigment as the colorant and 1 to 10% by weight of a specific aminium compound.
Inventors
- 👤 Norio Sawatari
- 👤 Yasuo Yamagishi
- 👤 Katsuji Ebisu
- 👤 Yoshimichi Katagiri
- 👤 Toshiaki Narusawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:32
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/20; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09741
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
113 words
An electrophotographic flash fixation process, which is characterized by using a powdery developing toner having improved light energy absorption properties comprising at least 80% by weight of a bisphenol A/epichlorohydrin type epoxy resin or a polyester resin as the binder resin, 1 to 10% by weight of a dye or pigment as the colorant and a light energy absorption improving quantity, in the range of from about 1 to 10% by weight of an aminium compound represented by the following general formula (I) or (II): ##STR4## wherein R stands for a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and X stands for SbF 6 or ClO 4 .
Claim 2
Dependent Claim
113 words
An electrophotographic flash fixation process, which is characterized by using a powdery developing toner having improved light energy absorption properties comprising at least 80% by weight of a bisphenol A/epichlorohydrin type epoxy resin or a polyester resin as the binder resin, 1 to 10% by weight of a dye or pigment as the colorant and a light energy absorption improving quantity, in the range of from about 1 to 10% by weight of an aminium compound represented by the following general formula (I) or (II): ##STR4## wherein R stands for a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and X stands for SbF 6 or ClO 4 .
Claim 3
Dependent Claim
21 words
A process according to claim 1, wherein the powdery developing toner contains 1 to 5% by weight of the aminium compound.
Claim 4
Dependent Claim
25 words
A process according to claim 1, wherein the compound of the formula (I) is selected from bis(p-diethylaminophenyl)[N,N-bis(p-diethylaminophenyl)-p-amionophenyl]aminium hexafluoroantimonate, bis(p-dimethylaminophenyl)[N,N-bis(p-dimethylaminophenyl)-p-aminophenyl]aminium hexafluoroantimonate, bis(p-di-n-butylaminophenyl)[N,N-bis(p-di-n-butylaminophenyl)-p-aminophenyl]aminium perchlorate and bis(p-di-n-propylaminophenyl)[N,N-bis(p-di-n-propylaminophenyl)-p-aminophenyl]aminium perchlorate.
Claim 5
Dependent Claim
25 words
A process according to claim 1, wherein the compound of the formula (II) is selected from N,N,N',N'-tetrakis(p-diethylaminophenyl)-p-benzoquinone-bis(imonium hexafluoroantimonate), N,N,N',N'-tetrakis(p-di-n-butylaminophenyl)-p-benzoquinone-bis(imonium perchlorate), N,N,N',N'-tetrakis(p-dioctylaminophenyl)-p-benzoquinone-bis(imonium hexafluoroantimonate) and N,N,N',N'-tetrakis(p-didodecylaminophenyl)-p-benzoquinone-bis(imonium hexafluoroantimonate).
Claim 6
Dependent Claim
19 words
A process according to claim 1, wherein the epoxy resin has a melting point of 60° to 160° C.
Claim 7
Dependent Claim
20 words
A process according to claim 1, wherein the epoxy resin has a weight average molecular weight of 3,000 to 30,000.
Claim 8
Dependent Claim
18 words
A process according to claim 1, wherein the epoxy resin has an epoxy equivalent of 450 to 5,500.
Claim 9
Dependent Claim
19 words
A process according to claim 1, wherein the polyester resin has a melting point of 60° to 140° C.
Claim 10
Dependent Claim
20 words
A process according to claim 1, wherein the polyester resin has a weight average molecular weight of 2,000 to 20,000.
Claim 11
Dependent Claim
35 words
A process according to claim 1, wherein the colorant is selected from a quinacridone type or rhodamine type red colorant, a copper phthalocyanine type or triphenylmethane type blue colorant and a benzidine type yellow colorant.
Claim 12
Dependent Claim
19 words
A process according to claim 1, wherein the fixation is performed by a flash of a xenon flash lamp.
Claim 13
Dependent Claim
15 words
A process according to claim 11, wherein the flash energy is 100 to 1,000 J.
Claim 14
Dependent Claim
15 words
A process according to claim 11, wherein the flash duration is 200 to 2,000 μsec.
Claim 15
Dependent Claim
16 words
A process according to claim 1, wherein the powdery developing toner contains a charge control agent.
Claim 16
Dependent Claim
113 words
A powdery developing toner for use in connection with an electrophotographic flash fixation process and having improved light energy absorption properties comprising at least 80% by weight of bisphenol A/epichlorohydrin type epoxy resin or a polyester resin as the binder resin, 1 to 10% by weight of a dye or pigment as the colorant and a light energy absorption improving quantity, in the range of from about 1 to 10% by weight of an aminium compound represented by the following general formula (I) or (II): ##STR5## wherein R stands for a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and X stands for SbF 6 or ClO 4 .
Claim 17
Dependent Claim
113 words
A powdery developing toner for use in connection with an electrophotographic flash fixation process and having improved light energy absorption properties comprising at least 80% by weight of bisphenol A/epichlorohydrin type epoxy resin or a polyester resin as the binder resin, 1 to 10% by weight of a dye or pigment as the colorant and a light energy absorption improving quantity, in the range of from about 1 to 10% by weight of an aminium compound represented by the following general formula (I) or (II): ##STR5## wherein R stands for a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and X stands for SbF 6 or ClO 4 .
Claim 18
Dependent Claim
25 words
A toner as set forth in claim 15, wherein the aminium compound is present in an amount of from about 1 to 5% by weight.
Claim 19
Dependent Claim
27 words
A toner as set forth in claim 15, wherein the compound of the formula (I) is selected from bis(p-diethylaminophenyl)[N,N-bis(p-diethylaminophenyl)-p-aminophenyl]aminium hexafluoroantimonate, bis(p-dimethylaminophenyl)[N,N-bis(p-dimethylaminophenyl)-p-aminophenyl]aminium hexafluoroantimonate, bis(p-di-n-butylaminophenyl)(N,N-bis(p-di-n-butylaminophenyl)-p-aminophenyl]aminium perchlorate and bis(p-di-n-propylaminophenyl)[N,N-bis(p-di-n-propylaminophenyl)-p-aminophenyl]aminium perchlorate.
Claim 20
Dependent Claim
27 words
A toner as set forth in claim 15, wherein the compound for the formula (II) is selected from N,N,N',N'-tetrakis(p-diethylaminophenyl)-p-benzoquinone-bis(imonium hexafluoroantimonate), N,N,N',N'-tetrakis(p-di-n-butylaminophenyl)-p-benzoquinone-bis(iminonium perchlorate), N,N,N',N'-tetrakis(p-dioctylaminophenyl)-p-benzoquinone-bis(imonium hexafluoroantimonate) and N,N,N',N'-tetrakis(p-didodecylaminophenyl)-p-benzoquinone-bis(imonium hexafluoroantimonate).
Claim 21
Dependent Claim
21 words
A toner as set forth in claim 15, wherein the epoxy resin has a melting point of 60° to 160° C.
Claim 22
Dependent Claim
22 words
A toner as set forth in claim 15, wherein the epoxy resin has a weight average molecular weight of 3,000 to 30,000.
Claim 23
Dependent Claim
20 words
A toner as set forth in claim 15, wherein the epoxy resin has an epoxy equivalent of 450 to 5,500.
Claim 24
Dependent Claim
21 words
A toner as set forth in claim 15, wherein the polyester resin has a melting point of 60° to 140° C.
Claim 25
Dependent Claim
22 words
A toner as set forth in claim 15, wherein the polyester resin has a weight average molecular weight of 2,000 to 20,000.
Claim 26
Dependent Claim
37 words
A toner as set forth in claim 15, wherein the colorant is selected from a quinacridone type or rhodamine type and colorant, a copper phthalocyanine type or triphenylmethane type blue colorant and a benzidine type yellow colorant.
Claim 27
Dependent Claim
15 words
A toner as set forth in claim 15 and further containing a charge control agent.
References Cited (Backward Citations)
US4352877A
Cited
US4425161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |