US4381338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing photoconductive particles
Assignee: Canon Inc
•
Filing: 1980-09-17
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Granted: 1983-04-26
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Expires: 2000-09-17
Abstract
Abstract Photoconductive particles are prepared by the reaction of a water-soluble metal salt with an ion exchange resin having an anion which reacts with the metal ion of the water-soluble metal salt to produce a water insoluble metal compound and the deposition of the water insoluble metal compound resulting from the reaction on the surface of the photoconductive particles.
Inventors
- 👤 Kiyoshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:34
CPC Classifications
H; H10; H10F; H10F71/00; H10F71/125; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
59 words
A process for preparing cadmium sulfide photoconductive particles comprising: reacting a water-soluble metal salt with an ion exchange resin having an anion which reacts with the metal ion of the water-soluble metal salt to produce a water insoluble metal compound and depositing the water insoluble metal compound resulting from the reaction on the surface of cadmium sulfide photoconductive particles.
Claim 2
Dependent Claim
59 words
A process for preparing cadmium sulfide photoconductive particles comprising: reacting a water-soluble metal salt with an ion exchange resin having an anion which reacts with the metal ion of the water-soluble metal salt to produce a water insoluble metal compound and depositing the water insoluble metal compound resulting from the reaction on the surface of cadmium sulfide photoconductive particles.
Claim 3
Dependent Claim
39 words
A process for preparing cadmium sulfide photoconductive particles according to claim 1 in which the water insoluble metal compound is selected from the group consisting of hydroxides, carbonates and sulfides of cadmium, iron, cobalt, nickel, aluminium, indium and zinc.
Claim 4
Dependent Claim
33 words
A process for preparing cadmium sulfide photoconductive particles according to claim 1, wherein the ion exchange resin is added to a solution of the water-soluble metal salt containing the cadmium sulfide photoconductive particles.
Claim 5
Dependent Claim
27 words
A process for preparing cadmium sulfide photoconductive particles according to claim 1, wherein the water-soluble salt is deposited on the surface of the cadmium sulfide photoconductive particles.
Claim 6
Dependent Claim
19 words
A process for preparing cadmium sulfide photoconductive particles according to claim 1, wherein the anion is a hydroxy group.
Claim 7
Dependent Claim
54 words
A process for preparing cadmium sulfide photoconductive particles according to claim 1, wherein the water-insoluble metal compound is a member selected from the group consisting of Cd(OH) 2 , Fe(OH) 2 , Al(OH) 3 , In(OH) 3 , Zn(OH) 2 , CdCO 3 , CdS, ZnS, Al 2 S 3 and InS 3 .
References Cited (Backward Citations)
GB1005246A
Cited
GB1031864A
Cited
US3486889A
Cited
US3634333A
Cited
US4183748A
Cited
US4043813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |