DE3219765C2 - Trisazoverbindungen und Verfahren zu ihrer Herstellung - Google Patents
Trisazoverbindungen und Verfahren zu ihrer HerstellungInfo
- Publication number
- DE3219765C2 DE3219765C2 DE3219765A DE3219765A DE3219765C2 DE 3219765 C2 DE3219765 C2 DE 3219765C2 DE 3219765 A DE3219765 A DE 3219765A DE 3219765 A DE3219765 A DE 3219765A DE 3219765 C2 DE3219765 C2 DE 3219765C2
- Authority
- DE
- Germany
- Prior art keywords
- trisazo
- electrophotographic
- hydroxy
- compounds
- carbazole
- 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.)
- Expired
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims description 9
- YPOXSLZIYJHIQI-UHFFFAOYSA-N 2-hydroxy-n-phenyl-11h-benzo[a]carbazole-3-carboxamide Chemical class OC1=CC2=C3NC4=CC=CC=C4C3=CC=C2C=C1C(=O)NC1=CC=CC=C1 YPOXSLZIYJHIQI-UHFFFAOYSA-N 0.000 abstract description 10
- 239000013078 crystal Substances 0.000 description 18
- 239000000243 solution Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 238000000862 absorption spectrum Methods 0.000 description 11
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 10
- 239000002800 charge carrier Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 125000003368 amide group Chemical group 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 9
- 238000000354 decomposition reaction Methods 0.000 description 9
- 239000000049 pigment Substances 0.000 description 9
- -1 arsenic selenide Chemical class 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 5
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- MYKQKWIPLZEVOW-UHFFFAOYSA-N 11h-benzo[a]carbazole Chemical compound C1=CC2=CC=CC=C2C2=C1C1=CC=CC=C1N2 MYKQKWIPLZEVOW-UHFFFAOYSA-N 0.000 description 2
- YPJKUCPQWQBOOA-UHFFFAOYSA-N 4-anthracen-9-yl-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C1=C(C=CC=C2)C2=CC2=CC=CC=C12 YPJKUCPQWQBOOA-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 235000010288 sodium nitrite Nutrition 0.000 description 2
- WMFMXCCUWWWUMV-UHFFFAOYSA-N 2-hydroxy-n-(4-methylphenyl)-11h-benzo[a]carbazole-3-carboxamide Chemical group C1=CC(C)=CC=C1NC(=O)C1=CC2=CC=C(C=3C(=CC=CC=3)N3)C3=C2C=C1O WMFMXCCUWWWUMV-UHFFFAOYSA-N 0.000 description 1
- JJQYAPNPXXKRDF-UHFFFAOYSA-N 4-(2,3-dihydro-1h-pyrazol-3-yl)-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C1C=CNN1 JJQYAPNPXXKRDF-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 101100346656 Drosophila melanogaster strat gene Proteins 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 1
- 125000006297 carbonyl amino group Chemical group [H]N([*:2])C([*:1])=O 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- YLQWCDOCJODRMT-UHFFFAOYSA-N fluoren-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C2=C1 YLQWCDOCJODRMT-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- GOBYCTJLLSAFOM-UHFFFAOYSA-N n-(2,4-dimethylphenyl)-2-hydroxy-11h-benzo[a]carbazole-3-carboxamide Chemical compound CC1=CC(C)=CC=C1NC(=O)C1=CC2=CC=C(C=3C(=CC=CC=3)N3)C3=C2C=C1O GOBYCTJLLSAFOM-UHFFFAOYSA-N 0.000 description 1
- FUACEWNXSXRKND-UHFFFAOYSA-N n-(2,5-dimethylphenyl)-2-hydroxy-11h-benzo[a]carbazole-3-carboxamide Chemical compound CC1=CC=C(C)C(NC(=O)C=2C(=CC3=C4NC5=CC=CC=C5C4=CC=C3C=2)O)=C1 FUACEWNXSXRKND-UHFFFAOYSA-N 0.000 description 1
- ORICDSUWFYPCFK-UHFFFAOYSA-N n-(2-ethoxyphenyl)-2-hydroxy-11h-benzo[a]carbazole-3-carboxamide Chemical compound CCOC1=CC=CC=C1NC(=O)C1=CC2=CC=C(C=3C(=CC=CC=3)N3)C3=C2C=C1O ORICDSUWFYPCFK-UHFFFAOYSA-N 0.000 description 1
- KPMLHLPGXILMED-UHFFFAOYSA-N n-(5-chloro-2-methylphenyl)-2-hydroxy-11h-benzo[a]carbazole-3-carboxamide Chemical compound CC1=CC=C(Cl)C=C1NC(=O)C1=CC2=CC=C(C=3C(=CC=CC=3)N3)C3=C2C=C1O KPMLHLPGXILMED-UHFFFAOYSA-N 0.000 description 1
- QYXUHIZLHNDFJT-UHFFFAOYSA-N n-[(9-ethylcarbazol-3-yl)methylideneamino]-n-methylaniline Chemical compound C=1C=C2N(CC)C3=CC=CC=C3C2=CC=1C=NN(C)C1=CC=CC=C1 QYXUHIZLHNDFJT-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- PBIMIGNDTBRRPI-UHFFFAOYSA-N trifluoro borate Chemical compound FOB(OF)OF PBIMIGNDTBRRPI-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
- 125000006617 triphenylamine group Chemical group 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000001429 visible spectrum Methods 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
- C09B35/378—Trisazo dyes of the type
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
- G03G5/0675—Azo dyes
- G03G5/0687—Trisazo dyes
- G03G5/0688—Trisazo dyes containing hetero rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
Der so erhaltene Rohkristall-Kuchen wurde in DMF (300 ml) dispergiert, die erhaltene Dispersion bei Raumtemperatur etwa 1 Stunde lang gerührt und anschließend wiederum zur Abtrennung der Kristalle aus der Dispersion filtriert. Dieses Verfahren wurde viermal wiederholt. Die erhaltenen Kristalle wurden mit Wasser gewaschen und getrocknet. Man erhielt eine Trisazoverbindung (Nr. 1-1) gemäß der vorliegenden Erfindung (1,5 g; Ausbeute: 53%) in Form schwarzer Kristalle. ZersetzunnsDunkt: 3000C oder höher.
| Tabelle II |
Ladungs
übertragungssubstanz |
|
|
Elektrophoto
graphisches Element Nr. |
Trisazo
verbindung |
D-I |
| II-2 | 1-2 | D-I |
| II-3 | 1-3 | D-2 |
| II-4 | 1-4 | D-2 |
| H-5 | 1-5 | D-I |
| II-6 | 1-6 | D-I |
| II-7 | 1-7 | D-I |
| II-8 | 1-8 | D-3 |
| II-9 | 1-9 | |
| Elektrophoto- graphisches Element Nr. |
Tabelle | (Volt) | in | (lux · s) | |
| 15 | H-I | -643 | (lux - s) | 7,0 | |
| 20 | II-2 | -353 | 2,3 | 4,8 | |
| II-3 | -804 | 2,1 | 1,8 | ||
| II-4 | -917 | 1,0 | 1.8 | ||
| II-5 | -687 | 0,9 | 5,8 | ||
| 25 | H-6 | -669 | 2,5 | 2,3 | |
| II-7 | -526 | 1,0 | 4,3 | ||
| II-8 | -513 | 2,0 | 3,7 | ||
| II-9 | -877 | 1,3 | 1,7 | ||
| iO | III-l | -915 | 0,7 | 39 | |
| III-2 | -385 | 9,1 | 29 | ||
| III-3 | -785 | 7,7 | 33 | ||
| III-4 | -650 | 8,1 | 83 | ||
| S5 | III-5 | -603 | 27,4 | 4,1 | |
| III-6 | +1198 | 1.9 | 2,3 | ||
| 1,3 | |||||
Zunächst wurden die elektrophotographischen EIe-
| { | 19 | 32 19 765 | (Volt) | 20 |
| Tabelle IV | -600 | |||
|
EIektro-
p hotographisches Element Nr. |
Wellenlänge Oberflächen
des Lichts, mit dem potential bestrahlt wurde |
-600 |
Geschwindigkeit
des Lichtabfalls |
|
| (mn) | -400 | (VoIt-Cm2^W"1 -es"1) | ||
| II-l | 780 | -400 | 170 | |
| 800 | -800 | 160 | ||
| II-2 | 780 | -800 | 180 | |
| 800 | -800 | 150 | ||
| II-3 | 780 | -800 | 950 | |
| 800 | -700 | 830 | ||
| IM | 780 | -700 | 1100 | |
| 800 | -700 | 990 | ||
| II-5 | 780 | -700 | 130 | |
| 800 | -600 | 120 | ||
| II-6 | 780 | -600 | 590 | |
| 800 | -600 | 560 | ||
| II-7 | 780 | -600 | 200 | |
| 800 | -800 | 150 | ||
| 11-8 | 780 | -800 | 320 | |
| 800 | -800 | 270 | ||
| II-9 | 780 | -800 | 880 | |
| 800 | -400 | 730 | ||
| 111-1 | 780 | -400 | 10 oder weniger | |
| 800 | -700 | 10 oder weniger | ||
| 111-2 | 780 | -700 | 10 oder weniger | |
| 800 | -800 | 10 oder weniger | ||
| III-3 | 780 | -800 | 10 oder weniger | |
| 800 | -500 | 10 oder weniger | ||
| III-4 | 780 | -600 | 10 oder weniger | |
| 800 | +800 | 10 oder weniger | ||
| III-5 | 780 | +800 | 10 oder weniger | |
| 800 | 10 oder weniger | |||
| ΠΙ-6 | 780 | 30 | ||
| 800 | 15 | |||
Wie vorstehend erwähnt, sind die Trisäzoverbindungen der vorliegenden Erfindung sehr brauchbare Materialien für elektrophotographische Elemente, und sie haben eine Reihe von Vorteilen, wie niedriges Gewicht, niedrige Kosten, eic, da die Verbindungen organisch sind. Es ist daher offensichtlich, daß die Trisazoverbin-
Claims (3)
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8015181A JPS57195767A (en) | 1981-05-28 | 1981-05-28 | Novel trisazo compound and production thereof |
| JP8016181A JPS57195768A (en) | 1981-05-28 | 1981-05-28 | Novel trisazo compound and production thereof |
| JP8810281A JPS57203061A (en) | 1981-06-10 | 1981-06-10 | Novel trisazo compound and its preparation |
| JP8811181A JPS57203062A (en) | 1981-06-10 | 1981-06-10 | Novel triazo compound and its preparation |
| JP9061181A JPS57206658A (en) | 1981-06-12 | 1981-06-12 | Novel trisazo compound and its preparation |
| JP568282A JPS58122967A (ja) | 1982-01-18 | 1982-01-18 | 新規なトリスアゾ化合物およびその製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3219765A1 DE3219765A1 (de) | 1982-12-23 |
| DE3219765C2 true DE3219765C2 (de) | 1984-03-08 |
Family
ID=27547927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3219765A Expired DE3219765C2 (de) | 1981-05-28 | 1982-05-26 | Trisazoverbindungen und Verfahren zu ihrer Herstellung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4507471A (de) |
| DE (1) | DE3219765C2 (de) |
| FR (1) | FR2506776B1 (de) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436800A (en) * | 1981-05-28 | 1984-03-13 | Ricoh Co., Ltd. | Multilayer electrophotographic element containing a trisazo charge carrier generating substance and a hydrazone charge carrier transfer substance |
| US4439506A (en) * | 1981-05-28 | 1984-03-27 | Ricoh Co., Ltd. | Multilayer electrophotographic element containing a trisazo charge carrier generating substance and an anthracene or divinyl benzene charge carrier transfer substance |
| JPS60104951A (ja) * | 1983-11-14 | 1985-06-10 | Ricoh Co Ltd | 電子写真感光体 |
| GB2153378B (en) * | 1983-12-28 | 1987-11-04 | Ricoh Kk | Disazo compounds and electrophotographic elements containing them |
| JPS60147743A (ja) * | 1984-01-11 | 1985-08-03 | Mitsubishi Chem Ind Ltd | 電子写真用感光体 |
| DE3515177A1 (de) * | 1984-04-27 | 1985-11-07 | Ricoh Co., Ltd., Tokio/Tokyo | Elektrophotographische originaldruckform und verfahren zur herstellung von druckplatten |
| US4600674A (en) * | 1984-06-21 | 1986-07-15 | Mitsubishi Paper Mills, Ltd. | Trisazo electrophotographic photoconductive material |
| US4612271A (en) * | 1984-12-21 | 1986-09-16 | Fuji Photo Film Co., Ltd. | Photosensitive composition comprising azo compounds |
| JPS62139564A (ja) * | 1985-12-13 | 1987-06-23 | Mitsubishi Paper Mills Ltd | 電子写真感光体 |
| US4873164A (en) * | 1987-05-14 | 1989-10-10 | Mitsubishi Kasei Corporation | Electrophotographic photoreceptor comprising a charge transport medium and a bis-azo compound containing oxygen |
| US4916039A (en) * | 1987-07-08 | 1990-04-10 | Ricoh Company, Ltd. | Electrophotographic photoconductor |
| JP2667936B2 (ja) * | 1990-12-26 | 1997-10-27 | キヤノン株式会社 | 電子写真感光体 |
| US5288576A (en) * | 1991-11-27 | 1994-02-22 | Mita Industrial Co., Ltd. | Electrophotographic member having an azo compound with diphenoquinone |
| US5336576A (en) * | 1991-11-27 | 1994-08-09 | Mita Industrial Co., Ltd. | Electrophotographic photosensitive member having a photosensitive layer comprising the azo compound |
| US5274084A (en) * | 1991-11-27 | 1993-12-28 | Mita Industrial Co., Ltd. | Bisazo compounds which contain a diphenoquinone tetraazo component and an electrophotographic photosensitive member having a photosensitive layer comprising the bisazo compound |
| US5244761A (en) * | 1992-01-24 | 1993-09-14 | Xerox Corporation | Imaging members with fluorinated trisazo photogenerating materials |
| US5422211A (en) * | 1993-04-30 | 1995-06-06 | Xerox Corporation | Imaging members with trisazo photogenerating materials |
| US6703174B2 (en) | 2001-01-31 | 2004-03-09 | Canon Kabushiki Kaisha | Electrophotographic apparatus and process cartridge |
| US8293451B2 (en) * | 2009-08-18 | 2012-10-23 | International Business Machines Corporation | Near-infrared absorbing film compositions |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4279981A (en) * | 1977-04-22 | 1981-07-21 | Ricoh Company, Ltd. | Electrophotographic elements containing trisazo compounds |
| JPS6024139B2 (ja) * | 1977-04-22 | 1985-06-11 | 株式会社リコー | 新規なトリスアゾ化合物及びその製造法 |
| JPS6027018B2 (ja) * | 1977-07-19 | 1985-06-26 | 株式会社リコー | 電子写真用感光体 |
| JPS54155227A (en) * | 1978-05-30 | 1979-12-07 | Ricoh Co Ltd | Preparation of dis-or trisazo pigment |
| JPS5610567A (en) * | 1979-07-04 | 1981-02-03 | Ricoh Co Ltd | Production of azo pigment |
-
1982
- 1982-05-19 US US06/379,688 patent/US4507471A/en not_active Expired - Lifetime
- 1982-05-26 DE DE3219765A patent/DE3219765C2/de not_active Expired
- 1982-05-28 FR FR8209435A patent/FR2506776B1/fr not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| NICHTS-ERMITTELT |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2506776B1 (fr) | 1986-12-26 |
| US4507471A (en) | 1985-03-26 |
| FR2506776A1 (fr) | 1982-12-03 |
| DE3219765A1 (de) | 1982-12-23 |
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