US4981767A
Expired / Lapsed
US
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Photoconductive mixed crystals of phthalocyanine compounds and process for producing the same
Assignee: Mitsubishi Chemical Corp
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Filing: 1989-06-27
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Granted: 1991-01-01
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Expires: 2009-06-27
Abstract
Abstract A photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR1## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond. The photoconductive material exhibits stability to heat and light and sufficient sensitivity in the visible to near infrared region.
Inventors
- 👤 Yoshinori Tokura
- 👤 Shinichi Suzuki
- 👤 Junko Gouda
- 👤 Hideo Toda
- 👤 Akira Itsubo
- 👤 Tomoko Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:29
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696; C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
50 words
A photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR3## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond.
Claim 2
Dependent Claim
50 words
A photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR3## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond.
Claim 3
Dependent Claim
118 words
A photoconductive material as claimed in claim 1, wherein said central substance as represented A is selected from simple substances of elements belonging to the groups IA, IIA, IIIA, IVA, VA, VIA, IB, IIB, IIIB, IVB, VB, VIB, VIIB, and VIIIB, e.g., H 2 , Li, Na, K, Cu, Ag, Au, Be, Mg, Ca, Ba, Zn, Cd, Hg, Al, Se, Y, In, Tl, Si, Ti, Ga, Zr, Sn, Hf, Pb, V, Nb, Sb, Ta, Cr, Mo, W, Mn, Te, Re, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, Pa, U, Np, Am, Ge, Bi, and Ac, and compounds containing these elements.
Claim 4
Dependent Claim
51 words
A photoconductive material as claimed in claim 1, wherein said phthalocyanine compounds whose central substances are different from each other are two compounds selected from a combination of H 2 -phthalocyanine and Cu-phthalocyanine, TiO-phthalocyanine or VO-phthalocyanine; a combination of Cu-phthalocyanine and TiO-phthalocyanine or VO-phthalocyanine; and a combination of TiO-phthalocyanine and VO-phthalocyanine.
Claim 5
Dependent Claim
29 words
A photoconductive material as claimed in claim 3, wherein a molar ratio of either one of said two compounds to the other of them ranges from 0.01 to 100.
Claim 6
Dependent Claim
69 words
A process for producing a photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR4## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or coordinate bond, which comprises vaporizing said at least two phthalocyanine compounds and re-aggregating the vapors on a substrate.
Claim 7
Dependent Claim
69 words
A process for producing a photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR4## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or coordinate bond, which comprises vaporizing said at least two phthalocyanine compounds and re-aggregating the vapors on a substrate.
Claim 8
Dependent Claim
48 words
A process as claimed in claim 5, wherein said vaporizing is by heating at a temperature not lower than the sublimation temperature of the phthalocyanine compounds under vacuum of not more than 1 Torr and said substrate is set at a temperature not higher than the sublimation temperature.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 5, wherein said vaporizing is by collision of accelerated particles against the phthalocyanine compounds.
Claim 10
Dependent Claim
77 words
A process for producing a photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR5## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond, which comprises dissolving said at least two phthalocyanine compounds in a common solubilizing agent and precipitating the mixed crystal in a poor solvent.
Claim 11
Dependent Claim
77 words
A process for producing a photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR5## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond, which comprises dissolving said at least two phthalocyanine compounds in a common solubilizing agent and precipitating the mixed crystal in a poor solvent.
Claim 12
Dependent Claim
23 words
A process as claimed in claim 8, wherein said common solubilizing agent is selected from concentrated sulfuric acid, trifluoromethylsulfonic acid, and trichloromethylsulfonic acid.
Claim 13
Dependent Claim
24 words
A process as claimed in claim 8, wherein said poor solvent is selected from water, dilute sulfuric acid, methanol, ethanol, hexane, benzene, and toluene.
Claim 14
Dependent Claim
67 words
An electrophotographic photoreceptor comprising a conductive support having provided thereon a photosensitive layer containing, as a carrier generating substance, at least one mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR6## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond.
Claim 15
Dependent Claim
67 words
An electrophotographic photoreceptor comprising a conductive support having provided thereon a photosensitive layer containing, as a carrier generating substance, at least one mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR6## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond.
Claim 16
Dependent Claim
18 words
An electrophotographic photoreceptor as claimed in claim 11, wherein said photosensitive layer further contains a carrier transporting substance.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-12-31 | 1994-07-02 | 1995-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-31 | 1998-07-02 | 1999-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-31 | 2002-07-02 | 2003-01-01 | $7700.00 | Window Closed / Lapsed |