DE3321871A1 - Bisazo-verbindung und diese bisazo-verbindung enthaltende elektrophotographische aufzeichnungsmaterialien - Google Patents
Bisazo-verbindung und diese bisazo-verbindung enthaltende elektrophotographische aufzeichnungsmaterialienInfo
- Publication number
- DE3321871A1 DE3321871A1 DE3321871A DE3321871A DE3321871A1 DE 3321871 A1 DE3321871 A1 DE 3321871A1 DE 3321871 A DE3321871 A DE 3321871A DE 3321871 A DE3321871 A DE 3321871A DE 3321871 A1 DE3321871 A1 DE 3321871A1
- Authority
- DE
- Germany
- Prior art keywords
- unsubstituted
- radical
- substituted
- recording material
- bisazo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- -1 bisazo compound Chemical class 0.000 claims description 138
- 239000002800 charge carrier Substances 0.000 claims description 32
- 125000001424 substituent group Chemical group 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 11
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 8
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical class [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 239000006163 transport media Substances 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 125000000623 heterocyclic group Chemical group 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 3
- 239000012876 carrier material Substances 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 2
- 239000010410 layer Substances 0.000 description 92
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 44
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 43
- 125000006297 carbonyl amino group Chemical group [H]N([*:2])C([*:1])=O 0.000 description 40
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- 238000005859 coupling reaction Methods 0.000 description 23
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- 230000008878 coupling Effects 0.000 description 20
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- 239000001632 sodium acetate Substances 0.000 description 12
- 235000017281 sodium acetate Nutrition 0.000 description 12
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 12
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- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
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- 239000010937 tungsten Substances 0.000 description 4
- OYPMHQIMQGZDHK-CRQXNEITSA-N 1-nitro-4-[(1e,3e,5e)-6-(4-nitrophenyl)hexa-1,3,5-trienyl]benzene Chemical compound C1=CC([N+](=O)[O-])=CC=C1\C=C\C=C\C=C\C1=CC=C([N+]([O-])=O)C=C1 OYPMHQIMQGZDHK-CRQXNEITSA-N 0.000 description 3
- CLQYLLIGYDFCGY-UHFFFAOYSA-N 4-(2-anthracen-9-ylethenyl)-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C=CC1=C(C=CC=C2)C2=CC2=CC=CC=C12 CLQYLLIGYDFCGY-UHFFFAOYSA-N 0.000 description 3
- BZKRKPGZABEOSM-XMHGGMMESA-N 4-[(e)-2-[3-[4-(diethylamino)phenyl]-2-phenyl-3,4-dihydropyrazol-5-yl]ethenyl]-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1\C=C\C1=NN(C=2C=CC=CC=2)C(C=2C=CC(=CC=2)N(CC)CC)C1 BZKRKPGZABEOSM-XMHGGMMESA-N 0.000 description 3
- MEWVMBOXBMKYDO-UHFFFAOYSA-N CC1C(C=2N(C3=CC=CC=C3C2CC1=C)CC)=NNC1=CC=CC=C1 Chemical compound CC1C(C=2N(C3=CC=CC=C3C2CC1=C)CC)=NNC1=CC=CC=C1 MEWVMBOXBMKYDO-UHFFFAOYSA-N 0.000 description 3
- 206010034972 Photosensitivity reaction Diseases 0.000 description 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- OCBFFGCSTGGPSQ-UHFFFAOYSA-N [CH2]CC Chemical compound [CH2]CC OCBFFGCSTGGPSQ-UHFFFAOYSA-N 0.000 description 3
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- WCYWZMWISLQXQU-UHFFFAOYSA-N methyl Chemical compound [CH3] WCYWZMWISLQXQU-UHFFFAOYSA-N 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
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- KLLLJCACIRKBDT-UHFFFAOYSA-N 2-phenyl-1H-indole Chemical compound N1C2=CC=CC=C2C=C1C1=CC=CC=C1 KLLLJCACIRKBDT-UHFFFAOYSA-N 0.000 description 1
- YRXRGRLSHSSUNF-UHFFFAOYSA-N 3,7-dinitrodibenzothiophene 5,5-dioxide Chemical compound C1=C([N+]([O-])=O)C=C2S(=O)(=O)C3=CC([N+](=O)[O-])=CC=C3C2=C1 YRXRGRLSHSSUNF-UHFFFAOYSA-N 0.000 description 1
- AEFDIOODLJMOML-UHFFFAOYSA-N 3,7-dinitrodibenzothiophene 5-oxide Chemical compound C1=C([N+]([O-])=O)C=C2S(=O)C3=CC([N+](=O)[O-])=CC=C3C2=C1 AEFDIOODLJMOML-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- BBSNLPXHXFJCJE-UHFFFAOYSA-N 3-nitrodibenzothiophene 5-oxide Chemical compound C1=CC=C2S(=O)C3=CC([N+](=O)[O-])=CC=C3C2=C1 BBSNLPXHXFJCJE-UHFFFAOYSA-N 0.000 description 1
- MLEBCZSWVARRML-UHFFFAOYSA-N 4-(2,5-diphenyl-1,3-oxazol-4-yl)-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C1=C(C=2C=CC=CC=2)OC(C=2C=CC=CC=2)=N1 MLEBCZSWVARRML-UHFFFAOYSA-N 0.000 description 1
- YATJOUUMQREMEW-UHFFFAOYSA-N 4-(2-anthracen-9-ylethenyl)-n,n-dimethylaniline Chemical compound C1=CC(N(C)C)=CC=C1C=CC1=C(C=CC=C2)C2=CC2=CC=CC=C12 YATJOUUMQREMEW-UHFFFAOYSA-N 0.000 description 1
- BGNGWHSBYQYVRX-UHFFFAOYSA-N 4-(dimethylamino)benzaldehyde Chemical compound CN(C)C1=CC=C(C=O)C=C1 BGNGWHSBYQYVRX-UHFFFAOYSA-N 0.000 description 1
- BYKAWMQRGVMTGH-UHFFFAOYSA-N 4-[1-(4-aminophenyl)hexa-1,3,5-trienyl]aniline Chemical class NC1=CC=C(C=C1)C(=CC=CC=C)C1=CC=C(C=C1)N BYKAWMQRGVMTGH-UHFFFAOYSA-N 0.000 description 1
- LXQJOJHWKDPNPD-UHFFFAOYSA-N 4-[2-[6-[2-[4-(diethylamino)phenyl]ethenyl]pyridin-2-yl]ethenyl]-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C=CC1=CC=CC(C=CC=2C=CC(=CC=2)N(CC)CC)=N1 LXQJOJHWKDPNPD-UHFFFAOYSA-N 0.000 description 1
- YCHDSDSNBXYNHE-UHFFFAOYSA-N 4-[3-[4-(diethylamino)phenyl]-1h-1,2,4-triazol-5-yl]-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C1=NN=C(C=2C=CC(=CC=2)N(CC)CC)N1 YCHDSDSNBXYNHE-UHFFFAOYSA-N 0.000 description 1
- SBMCZDLOXDWNIN-UHFFFAOYSA-N 4-[bis[4-(diethylamino)phenyl]methyl]-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC)C1=CC=C(N(CC)CC)C=C1 SBMCZDLOXDWNIN-UHFFFAOYSA-N 0.000 description 1
- 125000004172 4-methoxyphenyl group Chemical group [H]C1=C([H])C(OC([H])([H])[H])=C([H])C([H])=C1* 0.000 description 1
- IXAFAYIIDHDJHN-UHFFFAOYSA-N 4-methylpyrene Natural products C1=CC=C2C(C)=CC3=CC=CC4=CC=C1C2=C34 IXAFAYIIDHDJHN-UHFFFAOYSA-N 0.000 description 1
- XLEYZLMRDKTFOI-UHFFFAOYSA-N 9-[[4-(dimethylamino)phenyl]methylidene]-2h-fluoren-1-one Chemical compound C1=CC(N(C)C)=CC=C1C=C1C2=CC=CC=C2C2=C1C(=O)CC=C2 XLEYZLMRDKTFOI-UHFFFAOYSA-N 0.000 description 1
- SCHUFJWXJINKKV-UHFFFAOYSA-N 9-ethyl-3-fluoren-9-ylidene-2h-carbazole Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=C1C=C2C3=CC=CC=C3N(CC)C2=CC1 SCHUFJWXJINKKV-UHFFFAOYSA-N 0.000 description 1
- PLAZXGNBGZYJSA-UHFFFAOYSA-N 9-ethylcarbazole Chemical compound C1=CC=C2N(CC)C3=CC=CC=C3C2=C1 PLAZXGNBGZYJSA-UHFFFAOYSA-N 0.000 description 1
- AMOFHIPHHJZJED-UHFFFAOYSA-N CC1C(C(N(CC)CC)C=CC1=C)=NNC1=CC=CC=C1 Chemical compound CC1C(C(N(CC)CC)C=CC1=C)=NNC1=CC=CC=C1 AMOFHIPHHJZJED-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- WZKSXHQDXQKIQJ-UHFFFAOYSA-N F[C](F)F Chemical compound F[C](F)F WZKSXHQDXQKIQJ-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- JOSCNYCOYXTLTN-GFCCVEGCSA-N [3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxyphenyl]-[(3R)-3-(hydroxymethyl)pyrrolidin-1-yl]methanone Chemical group NCC1=CC(=NC(=C1)C(F)(F)F)OC=1C=C(C=CC=1)C(=O)N1C[C@@H](CC1)CO JOSCNYCOYXTLTN-GFCCVEGCSA-N 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- OHUWRYQKKWKGKG-UHFFFAOYSA-N formaldehyde;pyrene Chemical compound O=C.C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 OHUWRYQKKWKGKG-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000001041 indolyl group Chemical group 0.000 description 1
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical compound [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- URKZLZPFQKCNJV-UHFFFAOYSA-N n,n-dibenzyl-1,1-diphenylmethanamine Chemical compound C=1C=CC=CC=1CN(C(C=1C=CC=CC=1)C=1C=CC=CC=1)CC1=CC=CC=C1 URKZLZPFQKCNJV-UHFFFAOYSA-N 0.000 description 1
- ZOOOVTVHHIPVET-UHFFFAOYSA-N n,n-diethyl-4-[2-(5-methyl-1,3-benzoxazol-2-yl)ethenyl]aniline Chemical compound C1=CC(N(CC)CC)=CC=C1C=CC1=NC2=CC(C)=CC=C2O1 ZOOOVTVHHIPVET-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 125000000636 p-nitrophenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)[N+]([O-])=O 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920006215 polyvinyl ketone Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- WVIICGIFSIBFOG-UHFFFAOYSA-N pyrylium Chemical class C1=CC=[O+]C=C1 WVIICGIFSIBFOG-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/205—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl- or triaryl- alkane or-alkene
- C09B35/215—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl- or triaryl- alkane or-alkene of diarylethane or diarylethene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Photoreceptors In Electrophotography (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10399782A JPS58222153A (ja) | 1982-06-18 | 1982-06-18 | 新規なジスアゾ化合物及びその製造法 |
| JP10399682A JPS58222152A (ja) | 1982-06-18 | 1982-06-18 | 新規なジスアゾ化合物及びその製造法 |
| JP552483A JPS59129857A (ja) | 1983-01-17 | 1983-01-17 | 電子写真用感光体 |
| JP1114883A JPS59136351A (ja) | 1983-01-26 | 1983-01-26 | 電子写真用感光体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3321871A1 true DE3321871A1 (de) | 1983-12-22 |
| DE3321871C2 DE3321871C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-01-05 |
Family
ID=27454310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3321871A Granted DE3321871A1 (de) | 1982-06-18 | 1983-06-16 | Bisazo-verbindung und diese bisazo-verbindung enthaltende elektrophotographische aufzeichnungsmaterialien |
Country Status (3)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3515177A1 (de) * | 1984-04-27 | 1985-11-07 | Ricoh Co., Ltd., Tokio/Tokyo | Elektrophotographische originaldruckform und verfahren zur herstellung von druckplatten |
| US5081233A (en) * | 1986-05-15 | 1992-01-14 | Ricoh Company, Ltd. | Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713307A (en) * | 1986-04-11 | 1987-12-15 | Xerox Corporation | Organic azo photoconductor imaging members |
| US4797337A (en) * | 1987-07-27 | 1989-01-10 | Xerox Corporation | Disazo photoconductive imaging members |
| US5344735A (en) * | 1988-04-20 | 1994-09-06 | Ricoh Company, Ltd. | Bisazo electrophotographic photoconductor |
| US4833052A (en) * | 1988-08-02 | 1989-05-23 | Xerox Corporation | Bisazo photoconductive imaging members |
| US5097022A (en) * | 1988-11-14 | 1992-03-17 | Ricoh Company, Ltd. | Bisazo pigments for use in electrophotographic photoconductors |
| US6174637B1 (en) | 2000-01-19 | 2001-01-16 | Xerox Corporation | Electrophotographic imaging member and process of making |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2913450A (en) * | 1954-09-07 | 1959-11-17 | American Cyanamid Co | Azo dyes from bis (p-aminophenyl) butadienes |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL184708C (nl) * | 1975-07-04 | 1989-10-02 | Oce Van Der Grinten Nv | Elektrofotografisch kopieerprocede en produkt daarmee verkregen. |
| JPS6027017B2 (ja) * | 1977-07-08 | 1985-06-26 | 株式会社リコー | 電子写真用感光体 |
| US4314015A (en) * | 1977-07-18 | 1982-02-02 | Ricoh Co., Ltd. | Electrophotographic sensitive materials containing disazo compounds |
| GB2055882B (en) * | 1979-06-20 | 1983-04-13 | Ricoh Kk | Bis-azo compounds and the preparation thereof |
| US4349616A (en) * | 1979-12-28 | 1982-09-14 | Ricoh Co., Ltd. | Disazo pigment containing electrophotographic element |
| JPS57148750A (en) * | 1981-03-11 | 1982-09-14 | Konishiroku Photo Ind Co Ltd | Electrophotographic receptor |
-
1983
- 1983-06-01 US US06/500,051 patent/US4486519A/en not_active Expired - Lifetime
- 1983-06-16 GB GB08316362A patent/GB2123020B/en not_active Expired
- 1983-06-16 DE DE3321871A patent/DE3321871A1/de active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2913450A (en) * | 1954-09-07 | 1959-11-17 | American Cyanamid Co | Azo dyes from bis (p-aminophenyl) butadienes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3515177A1 (de) * | 1984-04-27 | 1985-11-07 | Ricoh Co., Ltd., Tokio/Tokyo | Elektrophotographische originaldruckform und verfahren zur herstellung von druckplatten |
| US5081233A (en) * | 1986-05-15 | 1992-01-14 | Ricoh Company, Ltd. | Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3321871C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-01-05 |
| GB8316362D0 (en) | 1983-07-20 |
| GB2123020B (en) | 1986-02-26 |
| US4486519A (en) | 1984-12-04 |
| GB2123020A (en) | 1984-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8128 | New person/name/address of the agent |
Representative=s name: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM. |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |