Patent US5635326A successfully refreshed from Google Patents.
US5635326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic image-developing toner, fine powdery titanium oxide, and hydrophobic fine powdery titanium oxide
Assignee: Canon Inc
•
Filing: 1995-02-09
•
Granted: 1997-06-03
•
Expires: 2015-02-09
Abstract
Abstract A toner for developing an electrostatic image, which comprises a colorant-containing particulate resin and a treated fine powdery material prepared by treating fine powdery titanium oxide with a silane-type organic compound, where the fine powdery titanium oxide is mainly composed of a TiO 2 component and a Ti(OR) m (OH) n component wherein R is a hydrocarbon group, m and n are respectively an integer of from 0 to 4, and m+n is 4.
Inventors
- 👤 Makoto Kanbayashi
- 👤 Tsuyoshi Takiguchi
- 👤 Wakashi Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:53
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; B; B82; B82Y; B82Y30/00; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3669; C09C1/3692; C09C3/00; C09C3/08; C09C3/12; G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09708; G03G9/09716; C01P; C01P2004/00; C01P2004/60; C01P2004/64; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
81 words
A toner for developing an electrostatic image comprising: a colorant-containing particulate resin and a treated fine powdery material prepared by treating fine powdery titanium oxide with a silane-type organic compound, said fine powdery titanium oxide containing 85 to 99.5% by weight of a TiO 2 component and 0.5 to 15% by weight of a Ti(OR) m (OH) n component, where R is a hydrocarbon group, m and n are respectively an integer of from 0 to 4 and m+n is 4.
Claim 2
Dependent Claim
81 words
A toner for developing an electrostatic image comprising: a colorant-containing particulate resin and a treated fine powdery material prepared by treating fine powdery titanium oxide with a silane-type organic compound, said fine powdery titanium oxide containing 85 to 99.5% by weight of a TiO 2 component and 0.5 to 15% by weight of a Ti(OR) m (OH) n component, where R is a hydrocarbon group, m and n are respectively an integer of from 0 to 4 and m+n is 4.
Claim 3
Dependent Claim
29 words
The toner according to claim 1, wherein the treated fine powdery material contains the Ti(OR) m (OH) n component at a content ranging from 1.0 to 12% by weight.
Claim 4
Dependent Claim
29 words
The toner according to claim 2, wherein the treated fine powdery material contains the Ti(OR) m (OH) n component at a content ranging from 1.5 to 10% by weight.
Claim 5
Dependent Claim
44 words
The toner according to claim 1, wherein the R group in the Ti(OR) m (OH) n component is an organic group selected from the group consisting of saturated cyclic hydrocarbon groups, unsaturated cyclic hydrocarbon groups, saturated acyclic hydrocarbon groups, and unsaturated acyclic hydrocarbon groups.
Claim 6
Dependent Claim
32 words
The toner according to claim 1, wherein the R group in the Ti(OR) m (OH) n component is an alkyl group selected from the group consisting of methyl, ethyl, propyl, and butyl.
Claim 7
Dependent Claim
40 words
The toner according to claim 1, wherein the treated fine powdery material is prepared by treatment with an organic silane compound to contain Si at a content ranging from 1 to 18% by weight in terms of SiO 2 .
Claim 8
Dependent Claim
40 words
The toner according to claim 6, wherein the treated fine powdery material is prepared by treatment with an organic silane compound to contain Si at a content ranging from 1.5 to 16% by weight in terms of SiO 2 .
Claim 9
Dependent Claim
40 words
The toner according to claim 7, wherein the treated fine powdery material is prepared by treatment with an organic silane compound to contain Si at a content ranging from 2.5 to 14% by weight in terms of SiO 2 .
Claim 10
Dependent Claim
23 words
The toner according to claim 1, wherein the treated fine powdery material has an average particle diameter ranging from 0.005 to 0.1 μm.
Claim 11
Dependent Claim
23 words
The toner according to claim 9, wherein the treated fine powdery material has an average particle diameter ranging from 0.01 to 0.05 μm.
Claim 12
Dependent Claim
20 words
The toner according to claim 1, wherein the toner has a weight-average particle diameter ranging from 3 to 15 μm.
Claim 13
Dependent Claim
20 words
The toner according to claim 11, wherein the toner has a weight-average particle diameter ranging from 4 to 12 μm.
Claim 14
Dependent Claim
31 words
The toner according to claim 1, wherein 0.05 to 10 parts by weight of the treated fine powdery material is mixed with 100 parts by weight of the colorant-containing particulate resin.
Claim 15
Dependent Claim
31 words
The toner according to claim 13, wherein 0.1 to 5 parts by weight of the treated fine powdery material is mixed with 100 parts by weight of the colorant-containing particulate resin.
Claim 16
Dependent Claim
24 words
The toner according to claim 1, wherein the organic silane compound is selected from the group consisting of alkylalkoxysilanes, siloxanes, silanes, and silicone oils.
Claim 17
Dependent Claim
55 words
The toner according to claim 1, wherein the organic silane compound is an alkoxysilane represented by the formula below: R.sub.m SiY.sub.n where R is an alkoxy group, m is an integer of from 1 to 3, Y is alkyl, vinyl, glycidoxy, methacryl, hydroxyalkyl, or phenyl, and n is an integer of from 1 to 3.
Claim 18
Dependent Claim
43 words
The toner according to claim 1, wherein the organic silane compound is an alkoxysilane represented by the formula below: C.sub.a H.sub.2a+1 --Si.paren open-st.OC.sub.b H.sub.2b+1).sub.3 where a is an integer of from 4 to 12, b is an integer of from 1 to 3.
Claim 19
Dependent Claim
37 words
The toner according to claim 17, wherein the organic silane compound is an alkoxysilane selected from the group consisting of n-butyltrimethoxysilane, isobutyltrimethoxysilane, n-butyltriethoxysilane, isobutyltrimethoxysilane, n-pentyltrimethoxysilane, n-pentyltriethoxysilane, n-hexyltrimethoxysilane, n-hexyltriethyoxysilwne, n-heptyltrimethoxysilane, n-heptyltriethoxysilene, n-octyltrimethoxysilane, n-octyltriethoxysilane, n-nonyltrimethoxysilane, n-nonyltriethoxysilane, n-decyltrimethoxysilane, and n-decyltriethoxysilane.
Claim 20
Dependent Claim
18 words
The toner according to claim 1, wherein the colorant-containing particulate resin contains a colorant and a binder resin.
Claim 21
Dependent Claim
26 words
The toner according to claim 19, wherein the binder resin is a material selected from the group consisting of styrene copolymers, polyester resins, and mixtures thereof.
Claim 22
Dependent Claim
66 words
The toner according to claim 19, wherein the binder resin is a polyester resin prepared by polycondensation of at least a dicarboxylic acid and a diol represented by the formula below: ##STR2## where R and R' are independently an ethylene group or a propylene group; x and y are independently an integer of 1 or more; and the average of x+y ranges from 2 to 10).
Claim 23
Dependent Claim
24 words
The toner according to claim 19, wherein the colorant is a yellow colorant, and the colorant-containing particulate resin is a particulate yellow color toner.
Claim 24
Dependent Claim
23 words
The toner according to claim 19, wherein the colorant is a magenta colorant, and the colorant-containing particulate resin is magenta color toner particles.
Claim 25
Dependent Claim
23 words
The toner according to claim 19, wherein the colorant is a cyan colorant, and the colorant-containing particulate resin is cyan color toner particles.
Claim 26
Dependent Claim
15 words
The toner according to claim 1, wherein the colorant-containing particulate resin is color toner particles.
Claim 27
Dependent Claim
17 words
The toner according to claim 25, wherein the color toner particles are containing a charge controlling agent.
Claim 28
Dependent Claim
79 words
A hydrophobic fine powdery material comprising: a hydrophobic fine powdery titanium oxide prepared by treating a fine powdery titanium oxide with an organic silane compound, said fine powdery titanium oxide being a composition containing 85 to 99.5% by weight of a TiO 2 component and 0.5 to 15% by weight of a Ti(OR) m (OH) n component, where R is a hydrocarbon group, m and n are respectively an integer of from 0 to 4 and m+n is 4.
Claim 29
Dependent Claim
79 words
A hydrophobic fine powdery material comprising: a hydrophobic fine powdery titanium oxide prepared by treating a fine powdery titanium oxide with an organic silane compound, said fine powdery titanium oxide being a composition containing 85 to 99.5% by weight of a TiO 2 component and 0.5 to 15% by weight of a Ti(OR) m (OH) n component, where R is a hydrocarbon group, m and n are respectively an integer of from 0 to 4 and m+n is 4.
Claim 30
Dependent Claim
29 words
The hydrophobic fine powdery material according to claim 27, wherein the composition contains the Ti(OR) m (OH) n component at a content ranging from 1.0 to 12% by weight.
Claim 31
Dependent Claim
29 words
The hydrophobic fine powdery material according to claim 28, wherein the composition contains the Ti(OR) m (OH) n component at a content ranging from 1.5 to 10% by weight.
Claim 32
Dependent Claim
47 words
The hydrophobic fine powdery material according to claim 27, wherein the R group in the Ti(OR) m (OH) n component is an organic group selected from the group consisting of saturated cyclic hydrocarbon groups, unsaturated cyclic hydrocarbon groups, saturated acyclic hydrocarbon groups, and unsaturated acyclic hydrocarbon groups.
Claim 33
Dependent Claim
35 words
The hydrophobic fine powdery material according to claim 27, wherein the R group in the Ti(OR) m (OH) n component is an alkyl group selected from the group consisting of methyl, ethyl, propyl, and butyl.
Claim 34
Dependent Claim
34 words
The hydrophobic fine powdery material according to claim 27, wherein the composition is prepared by thermal decomposition of a titanium alkoxide in a gas phase at a temperature of not higher than 600° C.
Claim 35
Dependent Claim
35 words
The hydrophobic fine powdery material according to claim 32, wherein the composition is prepared by thermal decomposition of a titanium alkoxide in a gas phase at a temperature ranging from 200° C. to 400° C.
Claim 36
Dependent Claim
33 words
The hydrophobic fine powdery material according to claim 32, wherein the titanium alkoxide is selected from the group consisting of titanium tetramethoxide, titanium tetraethoxide, titanium tetrapropoxide, titanium tetrabutoxide, diethoxytitanium oxide, and mixtures thereof.
Claim 37
Dependent Claim
43 words
The hydrophobic fine powdery material according to claim 27, wherein the fine powdery titanium oxide is prepared by treatment with an organic silane compound to contain Si at a content ranging from 1 to 18% by weight in terms of SiO 2 .
Claim 38
Dependent Claim
43 words
The hydrophobic fine powdery material according to claim 35, wherein the fine powdery titanium oxide is prepared by treatment with an organic silane compound to contain Si at a content ranging from 1.5 to 16% by weight in terms of SiO 2 .
Claim 39
Dependent Claim
43 words
The hydrophobic fine powdery material according to claim 36, wherein the treated fine powdery material is prepared by treatment with an organic silane compound to contain Si at a content ranging from 2.5 to 14% by weight in terms of SiO 2 .
Claim 40
Dependent Claim
27 words
The hydrophobic fine powdery material according to claim 27, wherein the organic silane compound is selected from the group consisting of alkylalkoxysilanes, siloxanes, silanes, and silicone oils.
Claim 41
Dependent Claim
58 words
The hydrophobic fine powdery material according to claim 27, wherein the organic silane compound is an alkoxysilane represented by the formula below: R.sub.m SiY.sub.n where R is an alkoxy group, m is an integer of from 1 to 3, Y is alkyl, vinyl, glycidoxy, methacryl, hydroxyalkyl, or phenyl, and n is an integer of from 1 to 3.
Claim 42
Dependent Claim
46 words
The hydrophobic fine powdery material according to claim 27, wherein the organic silane compound is an alkoxysilane represented by the formula below: C.sub.a H.sub.2a+1 --Si.paren open-st.OC.sub.b H.sub.2b+1).sub.3 where a is an integer of from 4 to 12, b is an integer of from 1 to 3.
Claim 43
Dependent Claim
40 words
The hydrophobic fine powdery material according to claim 40, wherein the organic silane compound is an alkoxysilane selected from the group consisting of n-butyltrimethoxysilane, isobutyltrimethoxysilane, n-butyltriethoxysilane, isobutyltrimethoxysilane, n-pentyltrimethoxysilane, n-pentyltriethoxysilane, n-hexyltrimethoxysilane, n-hexyltriethyoxysilwne, n-heptyltrimethoxysilane, n-heptyltriethoxysilene, n-octyltrimethoxysilane, n-octyltriethoxysilane, n-nonyltrimethoxysilane, n-nonyltriethoxysilane, n-decyltrimethoxysilane, and n-decyltriethoxysilane.
Claim 44
Dependent Claim
25 words
The hydrophobic fine powdery material according to claim 27, wherein the fine powdery material has an average particle diameter ranging from 0.005 to 0.1 μm.
Claim 45
Dependent Claim
25 words
The hydrophobic fine powdery material according to claim 9, wherein the fine powdery material has an average particle diameter ranging from 0.01 to 0.05 μm.
References Cited (Backward Citations)
US2221776A
Cited
US2297691A
Cited
US2618552A
Cited
US2874063A
Cited
JPS4847345A
Cited
US3909258A
Cited
JPS5219535A
Cited
JPS5232256A
Cited
JPS5664352A
Cited
JPS56128956A
Cited
JPS5952255A
Cited
JPS61160760A
Cited
US4666813A
Cited
EP0413824A1
Cited
JPH0440467A
Cited
US5192637A
Cited
US5250382A
Cited
EP0494692A1
Cited
JPH04337739A
Cited
JPH04348354A
Cited
US5320925A
Cited
JPH0572797A
Cited
EP0523654A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-02 | 2000-12-02 | 2001-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-02 | 2004-12-02 | 2005-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-02 | 2008-12-02 | 2009-06-03 | $7700.00 | Window Closed / Lapsed |