DE3339540A1 - Elektrofotografisches aufzeichnungsmaterial - Google Patents
Elektrofotografisches aufzeichnungsmaterialInfo
- Publication number
- DE3339540A1 DE3339540A1 DE19833339540 DE3339540A DE3339540A1 DE 3339540 A1 DE3339540 A1 DE 3339540A1 DE 19833339540 DE19833339540 DE 19833339540 DE 3339540 A DE3339540 A DE 3339540A DE 3339540 A1 DE3339540 A1 DE 3339540A1
- Authority
- DE
- Germany
- Prior art keywords
- electrophotographic recording
- sensitizers
- photoconductor layer
- layer
- alkyl
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 17
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052794 bromium Inorganic materials 0.000 claims description 5
- 239000002800 charge carrier Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 206010070834 Sensitisation Diseases 0.000 claims description 4
- 239000012876 carrier material Substances 0.000 claims description 4
- 230000008313 sensitization Effects 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- GGNDPFHHUHTCIO-UHFFFAOYSA-N 1h-benzimidazole;perylene-3,4,9,10-tetracarboxylic acid Chemical compound C1=CC=C2NC=NC2=C1.C1=CC=C2NC=NC2=C1.C=12C3=CC=C(C(O)=O)C2=C(C(O)=O)C=CC=1C1=CC=C(C(O)=O)C2=C1C3=CC=C2C(=O)O GGNDPFHHUHTCIO-UHFFFAOYSA-N 0.000 claims 1
- 241000251730 Chondrichthyes Species 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 239000010410 layer Substances 0.000 description 40
- 239000000975 dye Substances 0.000 description 11
- 239000000049 pigment Substances 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- -1 η-butyl Chemical group 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- 239000012190 activator Substances 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000003542 3-methylbutan-2-yl group Chemical group [H]C([H])([H])C([H])(*)C([H])(C([H])([H])[H])C([H])([H])[H] 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
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical class [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 235000015243 ice cream Nutrition 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 150000002916 oxazoles Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 1
- FVDOBFPYBSDRKH-UHFFFAOYSA-N perylene-3,4,9,10-tetracarboxylic acid Chemical compound C=12C3=CC=C(C(O)=O)C2=C(C(O)=O)C=CC=1C1=CC=C(C(O)=O)C2=C1C3=CC=C2C(=O)O FVDOBFPYBSDRKH-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- LEVJVKGPFAQPOI-UHFFFAOYSA-N phenylmethanone Chemical class O=[C]C1=CC=CC=C1 LEVJVKGPFAQPOI-UHFFFAOYSA-N 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000006617 triphenylamine group Chemical class 0.000 description 1
- 150000004961 triphenylmethanes Chemical class 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G03G5/09—Sensitisors or activators, e.g. dyestuffs
-
- 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
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/62—Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or perylene series
-
- 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
- G03G5/0622—Heterocyclic compounds
- G03G5/0644—Heterocyclic compounds containing two or more hetero rings
- G03G5/0646—Heterocyclic compounds containing two or more hetero rings in the same ring system
- G03G5/0659—Heterocyclic compounds containing two or more hetero rings in the same ring system containing more than seven relevant rings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Photoreceptors In Electrophotography (AREA)
- Light Receiving Elements (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833339540 DE3339540A1 (de) | 1983-11-02 | 1983-11-02 | Elektrofotografisches aufzeichnungsmaterial |
| EP84112928A EP0143979B1 (de) | 1983-11-02 | 1984-10-26 | Elektrofotografisches Aufzeichnungsmaterial |
| DE8484112928T DE3475970D1 (en) | 1983-11-02 | 1984-10-26 | Electrophotographic recording material |
| JP59228073A JPS60122954A (ja) | 1983-11-02 | 1984-10-31 | 電子写真用記録材料及びその製法 |
| US06/667,730 US4556622A (en) | 1983-11-02 | 1984-11-02 | Electrophotographic recording material whose photoconductor layer contains a halogenated perylene dye sensitizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833339540 DE3339540A1 (de) | 1983-11-02 | 1983-11-02 | Elektrofotografisches aufzeichnungsmaterial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3339540A1 true DE3339540A1 (de) | 1985-05-09 |
Family
ID=6213209
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19833339540 Withdrawn DE3339540A1 (de) | 1983-11-02 | 1983-11-02 | Elektrofotografisches aufzeichnungsmaterial |
| DE8484112928T Expired DE3475970D1 (en) | 1983-11-02 | 1984-10-26 | Electrophotographic recording material |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8484112928T Expired DE3475970D1 (en) | 1983-11-02 | 1984-10-26 | Electrophotographic recording material |
Country Status (4)
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535838A1 (de) * | 1985-10-08 | 1987-04-09 | Hoechst Ag | Elektrophotographisches aufzeichnungsmaterial |
| US4792508A (en) * | 1987-06-29 | 1988-12-20 | Xerox Corporation | Electrophotographic photoconductive imaging members with cis, trans perylene isomers |
| US4877702A (en) * | 1987-10-30 | 1989-10-31 | Mita Industrial Co., Ltd. | Electrophotographic sensitive material |
| US4917980A (en) * | 1988-12-22 | 1990-04-17 | Xerox Corporation | Photoresponsive imaging members with hole transporting polysilylene ceramers |
| KR0134186B1 (ko) * | 1989-02-28 | 1998-04-29 | 미타 요시히로 | 전자사진 감광체 |
| US5338637A (en) * | 1991-07-03 | 1994-08-16 | Konica Corporation | Electrophotographic photoreceptor with perylene and styryl compounds |
| US5248580A (en) * | 1992-03-02 | 1993-09-28 | Xerox Corporation | Photoconductive imaging members with ladder polymers |
| DE4236885A1 (de) * | 1992-10-31 | 1994-05-05 | Basf Ag | Quaterrylentetracarbonsäureimide |
| US5373738A (en) * | 1993-02-01 | 1994-12-20 | Xerox Corporation | Humidity detector |
| EP0638613B1 (de) * | 1993-08-13 | 1998-12-23 | Ciba SC Holding AG | Perylenamidinimid-Farbstoffe, ein Verfahren zu deren Herstellung und deren Verwendung |
| JPH07128889A (ja) * | 1993-11-01 | 1995-05-19 | Fuji Xerox Co Ltd | 電子写真感光体 |
| US5876887A (en) * | 1997-02-26 | 1999-03-02 | Xerox Corporation | Charge generation layers comprising pigment mixtures |
| US6162571A (en) * | 1998-10-02 | 2000-12-19 | Xerox Corporation | Unsymmetrical perylene dimers |
| US6165661A (en) * | 1999-05-21 | 2000-12-26 | Xerox Corporation | Perylene compositions |
| US6051351A (en) * | 1999-05-21 | 2000-04-18 | Xerox Corporation | Perylenes |
| US6287738B1 (en) | 2000-05-25 | 2001-09-11 | Xerox Corporation | Photoconductive imaging members |
| US6464902B1 (en) | 2000-05-25 | 2002-10-15 | Xerox Corporation | Perylene mixtures |
| US6692562B2 (en) | 2002-03-08 | 2004-02-17 | Sun Chemical Corporation | Process for making perylene pigment compositions |
| ATE495222T1 (de) * | 2004-02-11 | 2011-01-15 | Basf Se | Schwarze perylenpigmente |
| CN101688063B (zh) * | 2007-07-03 | 2013-04-10 | 巴斯夫欧洲公司 | 苝颜料的水相合成 |
| EP2181172B1 (de) * | 2007-08-17 | 2016-02-24 | Basf Se | Halogenhaltige perylentetracarbonsäurederivate und deren verwendung |
| JP2012519303A (ja) * | 2009-02-27 | 2012-08-23 | 日東電工株式会社 | 芳香族テトラカルボン酸ビスベンゾイミダゾール誘導体に基づくリオトロピック液晶系およびその製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3879200A (en) * | 1970-12-01 | 1975-04-22 | Xerox Corp | Novel xerographic plate containing photoinjecting bis-benzimidazole pigments |
| DE2237539C3 (de) * | 1972-07-31 | 1981-05-21 | Hoechst Ag, 6000 Frankfurt | Elektrophotographisches Aufzeichnungsmaterial |
| DE2353639C2 (de) * | 1973-10-26 | 1983-08-04 | Hoechst Ag, 6230 Frankfurt | Elektrophotographisches Aufzeichnungsmaterial |
| DE3110960A1 (de) * | 1981-03-20 | 1982-09-30 | Basf Ag, 6700 Ludwigshafen | Elektrophotographisches aufzeichnungsmaterial |
-
1983
- 1983-11-02 DE DE19833339540 patent/DE3339540A1/de not_active Withdrawn
-
1984
- 1984-10-26 DE DE8484112928T patent/DE3475970D1/de not_active Expired
- 1984-10-26 EP EP84112928A patent/EP0143979B1/de not_active Expired
- 1984-10-31 JP JP59228073A patent/JPS60122954A/ja active Granted
- 1984-11-02 US US06/667,730 patent/US4556622A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0143979B1 (de) | 1989-01-04 |
| EP0143979A3 (en) | 1987-06-16 |
| JPH0426467B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-05-07 |
| DE3475970D1 (en) | 1989-02-09 |
| US4556622A (en) | 1985-12-03 |
| EP0143979A2 (de) | 1985-06-12 |
| JPS60122954A (ja) | 1985-07-01 |
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