US5283146A
Expired / Lapsed
US
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Photoconductive phthalocyanine composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1992-06-29
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Granted: 1994-02-01
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Expires: 2012-06-29
Abstract
Abstract A photoconductive phthalocyanine composition is disclosed, comprising (A) a photoconductive phthalocyanine composition comprising 100 parts by weight of an unsubstituted phthalocyanine derivative and from 0.001 to 5 parts by weight of a nitro- or halogen-substituted phthalocyanine derivative and (B) from 0.01 to 10 parts by weight, per 100 parts by weight of the photoconductive phthalocyanine composition (A), of a phthalocyanine derivative having at least 4 electron attracting groups. A photosensitive layer formed of the photoconductive phthalocyanine composition produces digital signals whether input light is digital or not. It is useful as not only a photoreceptor for digital recording system of electrophotography but a photoreceptor for analogue light input in conventional PPC to provide a high quality image with sharp edges.
Inventors
- 👤 Toyoshi Ohashi
- 👤 Toshiaki Ishibashi
- 👤 Junko Gouda
- 👤 Akira Itsubo
- 👤 Toshiyuki Koyama
- 👤 Masatomi Ozawa
- 👤 Katsutosi Iijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:50
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
168 words
A photoconductive phthalocyanine composition comprising (A) a photoconductive phthalocyanine composition comprising 100 parts by weight of a compound represented by formula (I): ##STR4## wherein M represents a hydrogen atom or an atom or compound residue capable of covalent bonding or coordinate bonding to phthalocyanine, and from 0.001 to 5 parts by weight of a compound represented by formula (II): ##STR5## wherein M is as defined above; and R 1 represents a nitro group or a halogen atom, and (B) from 0.01 to 10 parts by weight, per 100 parts by weight of the photoconductive phthalocyanine composition (A), of a phthalocyanine derivative represented by formula (III): ##STR6## wherein M is as defined above; and R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 , which may be the same or different, each represents a hydrogen atom or an electron attracting group, provided that at least four of them each represents an electron attracting group.
Claim 2
Dependent Claim
168 words
A photoconductive phthalocyanine composition comprising (A) a photoconductive phthalocyanine composition comprising 100 parts by weight of a compound represented by formula (I): ##STR4## wherein M represents a hydrogen atom or an atom or compound residue capable of covalent bonding or coordinate bonding to phthalocyanine, and from 0.001 to 5 parts by weight of a compound represented by formula (II): ##STR5## wherein M is as defined above; and R 1 represents a nitro group or a halogen atom, and (B) from 0.01 to 10 parts by weight, per 100 parts by weight of the photoconductive phthalocyanine composition (A), of a phthalocyanine derivative represented by formula (III): ##STR6## wherein M is as defined above; and R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 , which may be the same or different, each represents a hydrogen atom or an electron attracting group, provided that at least four of them each represents an electron attracting group.
Claim 3
Dependent Claim
39 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein M represents a hydrogen atom, magnesium, calcium, zinc, aluminum, titanium, tin, lead, vanadium, iron, cobalt, nickel, copper, silicon, or a residue of an oxide or halide of these metals.
Claim 4
Dependent Claim
23 words
The photoconductive phthalocyanine composition as claimed in claim 2, wherein M represents a hydrogen atom, copper, cobalt, lead, nickel, magnesium, titanyl, or vanadyl.
Claim 5
Dependent Claim
20 words
The photoconductive phthalocyanine composition as claimed in claim 3, wherein M represents a hydrogen atom, copper, magnesium, titanyl, or vanadyl.
Claim 6
Dependent Claim
26 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein R 1 represents a nitro group, a chlorine atom, a bromine atom, or a fluorine atom.
Claim 7
Dependent Claim
20 words
The photoconductive phthalocyanine composition as claimed in claim 5, wherein R 1 represents a nitro group or a chlorine atom.
Claim 8
Dependent Claim
40 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein the photoconductive phthalocyanine composition (A) comprises 100 parts by weight of the compound of formula (I) and from 0.001 to 3 parts by weight of the compound of formula (II).
Claim 9
Dependent Claim
53 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein the electron attracting group as represented by R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , or R 9 shows a positive value of the substituent constant σ in Hammett's rule.
Claim 10
Dependent Claim
22 words
The photoconductive phthalocyanine composition as claimed in claim 8, wherein the electron attracting group shows the substituent constant σ more than +0.2.
Claim 11
Dependent Claim
58 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein the electron attracting group as represented by R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , or R 9 represents a nitro group, a cyano group, a halogen atom, a sulfo group, or a carboxyl group.
Claim 12
Dependent Claim
25 words
The photoconductive phthalocyanine composition as claimed in claim 10, wherein the electron attracting group represents a nitro group, a cyano group, or a halogen atom.
Claim 13
Dependent Claim
22 words
The photoconductive phthalocyanine composition as claimed in claim 11, wherein the electron attracting group represents a nitro group or a halogen atom.
Claim 14
Dependent Claim
24 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein the compound of formula (III) carries 4 to 8 electron attracting groups per molecule.
Claim 15
Dependent Claim
24 words
The photoconductive phthalocyanine composition as claimed in claim 13, wherein the compound of formula (III) carries 4 to 6 electron attracting groups per molecule.
Claim 16
Dependent Claim
38 words
The photoconductive phthalocyanine composition as claimed in claim 1, wherein the photoconductive phthalocyanine composition comprises 100 parts by weight of the phthalocyanine composition (A) and from 0.1 to 5 parts by weight of the compound of formula (III).
References Cited (Backward Citations)
JPS57148745A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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