JPH01276147A - Electrophotographic sensitive body - Google Patents
Electrophotographic sensitive bodyInfo
- Publication number
- JPH01276147A JPH01276147A JP10646288A JP10646288A JPH01276147A JP H01276147 A JPH01276147 A JP H01276147A JP 10646288 A JP10646288 A JP 10646288A JP 10646288 A JP10646288 A JP 10646288A JP H01276147 A JPH01276147 A JP H01276147A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- parts
- charge transport
- powder
- photoreceptor
- 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
- 239000010410 layer Substances 0.000 claims abstract description 62
- 239000000843 powder Substances 0.000 claims abstract description 40
- 230000003647 oxidation Effects 0.000 claims abstract description 23
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 23
- 239000000314 lubricant Substances 0.000 claims abstract description 20
- 239000002344 surface layer Substances 0.000 claims abstract description 18
- 108091008695 photoreceptors Proteins 0.000 claims description 43
- 150000001875 compounds Chemical class 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 25
- 239000002356 single layer Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims 1
- 229920005989 resin Polymers 0.000 abstract description 27
- 239000011347 resin Substances 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 25
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract description 9
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 239000000049 pigment Substances 0.000 description 16
- 239000006185 dispersion Substances 0.000 description 15
- 239000011230 binding agent Substances 0.000 description 14
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 14
- 238000000576 coating method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- -1 hexafluoroethylene propylene Chemical group 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000011324 bead Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 229920005668 polycarbonate resin Polymers 0.000 description 7
- 239000004431 polycarbonate resin Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000007598 dipping method Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
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- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 5
- 229920006122 polyamide resin Polymers 0.000 description 5
- SDDLEVPIDBLVHC-UHFFFAOYSA-N Bisphenol Z Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)CCCCC1 SDDLEVPIDBLVHC-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 229920000515 polycarbonate Polymers 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920013716 polyethylene resin Polymers 0.000 description 3
- 230000035945 sensitivity Effects 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
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004687 Nylon copolymer Substances 0.000 description 1
- 241001417527 Pempheridae Species 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- ZTWQZJLUUZHJGS-UHFFFAOYSA-N Vat Yellow 4 Chemical compound C12=CC=CC=C2C(=O)C2=CC=C3C4=CC=CC=C4C(=O)C4=C3C2=C1C=C4 ZTWQZJLUUZHJGS-UHFFFAOYSA-N 0.000 description 1
- AZWHFTKIBIQKCA-UHFFFAOYSA-N [Sn+2]=O.[O-2].[In+3] Chemical compound [Sn+2]=O.[O-2].[In+3] AZWHFTKIBIQKCA-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical group NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical group [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007760 metering rod coating Methods 0.000 description 1
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 description 1
- 238000006198 methoxylation reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 150000002916 oxazoles Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- LLBIOIRWAYBCKK-UHFFFAOYSA-N pyranthrene-8,16-dione Chemical compound C12=CC=CC=C2C(=O)C2=CC=C3C=C4C5=CC=CC=C5C(=O)C5=C4C4=C3C2=C1C=C4C=C5 LLBIOIRWAYBCKK-UHFFFAOYSA-N 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- WVIICGIFSIBFOG-UHFFFAOYSA-N pyrylium Chemical compound C1=CC=[O+]C=C1 WVIICGIFSIBFOG-UHFFFAOYSA-N 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000011134 resol-type phenolic resin Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- OKYDCMQQLGECPI-UHFFFAOYSA-N thiopyrylium Chemical compound C1=CC=[S+]C=C1 OKYDCMQQLGECPI-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000009423 ventilation Methods 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
- G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
- G03G5/0503—Inert supplements
- G03G5/051—Organic non-macromolecular compounds
- G03G5/0517—Organic non-macromolecular compounds comprising one or more cyclic groups consisting of carbon-atoms only
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真複写機、レーザービームプリンター
、ＣＲＴプリンター、電子写真製版システムなどの電子
写真応用分野に広く用いることのできる耐久性の優れた
電子写真感光体に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a highly durable product that can be widely used in electrophotographic application fields such as electrophotographic copying machines, laser beam printers, CRT printers, and electrophotographic engraving systems. The present invention relates to an electrophotographic photoreceptor.
電子写真感光体の光導電材料として、近年種々の有機光
導電材料の開発が進み、特に電荷発生層と電荷輸送層を
積層した機能分離感光体は既に実用化され複写機やプリ
ンターに搭載されている。しかしながら、これらの感光
体は一般的に耐久性が低いことが１つの大きな欠点であ
るとされてきた。In recent years, various organic photoconductive materials have been developed as photoconductive materials for electrophotographic photoconductors, and in particular, functionally separated photoconductors with a layered charge generation layer and charge transport layer have already been put into practical use and installed in copying machines and printers. There is. However, one major drawback of these photoreceptors has been that they generally have low durability.
耐久性としては感度、残留電位、帯電能、画像ボケなど
の電子写真物性面の耐久性及び摺擦による感光体表面の
摩耗やひっかき傷などの機械的耐久性に大別され、いず
れも感光体の寿命を決定する大きな要因となっている。Durability is broadly divided into durability of electrophotographic physical properties such as sensitivity, residual potential, charging ability, and image blur, and mechanical durability such as abrasion and scratches on the surface of the photoconductor due to rubbing. is a major factor in determining the lifespan of
このうち電子写真物性面の耐久性、特に画像ボケに関し
てはコロナ帯電器から発生するオゾン、Ｎｏ、等の活性
物質により感光体表面層に含有される電荷輸送物質が劣
化することが原因であることが知られている。また機械
的耐久性に関しては感光層に対して紙、ブレード／ロー
ラー等のクリーニング部材、トナー等が物理的に接触し
て摺擦することが原因であることが知られている。Among these, the durability of electrophotographic physical properties, especially image blur, is caused by the deterioration of charge transport substances contained in the surface layer of the photoreceptor due to active substances such as ozone and No generated from the corona charger. It has been known. It is also known that mechanical durability is caused by physical contact and rubbing of paper, cleaning members such as blades/rollers, toner, etc. against the photosensitive layer.
電子写真物性面の耐久性を上昇させるためには、オゾン
、Ｎｏ、等の活性物質により劣化されにくい電荷輸送物
質を用いることが重要であり、酸化電位の高い電荷輸送
物質を選択することが知られている。また機械的耐久性
を向上させるためには紙やクリーニング部材による摺擦
に耐えるために、表面の潤滑性を上げ摩擦を小さ（する
ことと、トナーのフィルミング融着等を防止するために
表面の離型性をよくすることが重要であり、特開昭５６
−２５７４６号公報、特開昭５６−２５７４９号公報、
特開昭６１−１２３８５０号公報などに記載されている
ように、フッ素系樹脂粉体、フッ化黒鉛、ポリオレフィ
ン系樹脂粉体などの滑材を表面層に配合することが知ら
れている。In order to increase the durability of electrophotographic physical properties, it is important to use a charge transport material that is resistant to deterioration by active substances such as ozone and No. It is well known that a charge transport material with a high oxidation potential is selected. It is being In addition, in order to improve mechanical durability, it is necessary to increase the lubricity of the surface and reduce friction (to withstand rubbing by paper and cleaning materials), and to prevent toner filming and fusing, etc. It is important to improve the mold releasability of
-25746 publication, JP-A-56-25749 publication,
As described in JP-A No. 61-123850, it is known to incorporate lubricants such as fluororesin powder, fluorinated graphite, and polyolefin resin powder into the surface layer.
更に、特開昭６３−３０８５０号公報によれば上記の対
策を組み合せることが提案されており、これによって、
耐久性が向上し、感光体寿命が大きく延びることが明ら
かになった。Furthermore, according to Japanese Unexamined Patent Publication No. 63-30850, it is proposed to combine the above measures, and thereby,
It has become clear that the durability is improved and the life of the photoreceptor is greatly extended.
しかしながら、感光体寿命が大きく延びたことに伴って
、新たな問題として、感光体休止メモリー現象が発生し
易（なることが判明した。However, as the life of the photoreceptor has been greatly extended, it has been found that a new problem, the photoreceptor pause memory phenomenon, is likely to occur.
休止メモリー現象とは、基本的にはコロナ生成物による
劣化現象の一つであるが、コピー終了後感光体の回転が
停止しコロナ帯電器の直下近傍にとまった部分の帯電能
が低下し、正現像の場合だとその部分だけ画像濃度が下
り、画像上に白ヌケが発生し、反転現像だと画像濃度が
上り、画像上に黒すじが発生する現象である。この現象
は長期間感光体を使用した後に発生し易（、上記の対策
で感光体寿命が延びたことにより目立って来る。The dormant memory phenomenon is basically a deterioration phenomenon caused by corona products, but after copying is completed, the rotation of the photoreceptor stops and the charging ability of the part that stops directly under the corona charger decreases. In the case of normal development, the image density decreases in that area and white spots appear on the image, whereas in the case of reverse development, the image density increases and black streaks appear on the image. This phenomenon tends to occur after the photoreceptor is used for a long period of time (and becomes more noticeable as the life of the photoreceptor is extended by the above measures.
このような現象に対して画像形成装置本体の吸排気機構
や帯電器形状を改良することにより、若干の改善は見ら
れるが完全ではなく、特に小型コピー装置、カートリッ
ジタイプの感光体を有するコピー装置においては問題と
なっているのが現状である。By improving the intake/exhaust mechanism of the image forming apparatus main body and the shape of the charger, some improvement can be seen in this phenomenon, but it is not perfect, especially in small copying devices and copying devices with cartridge-type photoreceptors. The current situation is that this is a problem.
すなわち本発明の目的は、前述の電子写真物性的耐久性
と機械的耐久性を備え、かつ実際の画像形成装置内での
使用に際し、休止メモリー現象を生じない感光体を提供
することにある。That is, an object of the present invention is to provide a photoreceptor that has the above-mentioned electrophotographic physical durability and mechanical durability and does not cause the pause memory phenomenon when used in an actual image forming apparatus.
また、本発明の目的は、電位変動の少ない、常に安定し
た高品質の画像を得ることができる感光体を提供するこ
にある。Another object of the present invention is to provide a photoreceptor that can always produce stable, high-quality images with little potential fluctuation.
本発明者らは、かかる目的に従って鋭意検討を重ねた結
果、滑材粉体と、酸化電位が０．６Ｖ以上の電荷輸送物
質と、一般式（Ｉ）で表わされる化合物を含有する表面
層を有する感光体が前述の要求に答える性能を有するこ
とを見出した。As a result of extensive studies in accordance with the above objective, the present inventors have developed a surface layer containing a lubricant powder, a charge transport substance having an oxidation potential of 0.6 V or more, and a compound represented by the general formula (I). It has been found that the photoreceptor having the above-mentioned photoreceptor has performance that meets the above-mentioned requirements.
すなわち、本発明は、導電性支持体上に感光層を有する
電子写真感光体において、表面層が、滑材粉体と、酸化
電位０，６Ｖ以上の電荷輸送物質と、一般式（１）
〔ただし、Ｘ、、Ｘ２およびＸ３は、−Ｈまたは−〇Ｈ
３ＣＨ３
ζ
−Ｃ−ＣＨ２Ｃ１（３を示す。〕
ＣＨ３
で示される化合物とを含有することを特徴とする電子写
真感光体である。That is, the present invention provides an electrophotographic photoreceptor having a photosensitive layer on a conductive support, in which the surface layer comprises a lubricant powder, a charge transporting substance having an oxidation potential of 0.6 V or more, and general formula (1). However, X, , X2 and X3 are -H or -〇H
3CH3ζ-C-CH2C1 (indicates 3) This is an electrophotographic photoreceptor characterized by containing a compound represented by CH3.
本発明においては、滑材粉体を添加することにより、表
面層の滑り性や耐摩耗性、耐着物に対する離型性など機
械的特性を向上させ、また、酸化電位０．６Ｖ以上の高
酸化電位の電荷輸送物質を使用することにより、コロナ
生成物に対する耐性を改善し、感度低下、残留電位上昇
、画像ボケといった電荷輸送物質の劣化に伴なう弊害を
防止し、電子写真特性の安定化をはかるものである。さ
らに、これらの手段によって感光体寿命が延びることに
より新たに発生する感光体休止メモリー現象を、本発明
においては一般式（Ｉ）の化合物により防止するもので
ある。In the present invention, by adding lubricant powder, the mechanical properties such as the slipperiness and abrasion resistance of the surface layer and the releasability against deposits are improved. By using a potential charge transport material, it improves resistance to corona products, prevents negative effects associated with charge transport material deterioration such as decreased sensitivity, increased residual potential, and image blurring, and stabilizes electrophotographic properties. It measures the Furthermore, in the present invention, the compound of the general formula (I) is used to prevent the photoreceptor stop memory phenomenon that newly occurs due to the extension of the photoreceptor life by these means.
本発明に用いる滑材粉体としては、四フッ化エチレン樹
脂、三フッ化塩化エチレン樹脂、六フッ化エチレンプロ
ピレン樹脂、ニフツ化二塩化エチレン樹脂、フッ化ビニ
リデン樹脂及びそれらの共重合体のようなフッ素系樹脂
粉体、あるいはポリエチレン、ポリプロピレン、ポリヘ
キセン及びそれらの共重合体のようなポリオレフィン系
樹脂粉体、さらにはフッ化黒鉛粉体といったものが挙げ
られ２種以上組み合わせてもよい。これらの中でも、滑
り性、耐摩耗性、離型性の点から、四フッ化エチレン樹
脂、フッ化ビニリデン樹脂が好ましい。Examples of the lubricant powder used in the present invention include tetrafluoroethylene resin, trifluorochloride ethylene resin, hexafluoroethylene propylene resin, niphthodichloride ethylene resin, vinylidene fluoride resin, and copolymers thereof. Examples include fluorine-based resin powder, polyolefin-based resin powder such as polyethylene, polypropylene, polyhexene, and their copolymers, and even fluorinated graphite powder, and two or more types may be combined. Among these, tetrafluoroethylene resin and vinylidene fluoride resin are preferred from the viewpoint of slipperiness, abrasion resistance, and mold releasability.
本発明に用いる酸化電位が０．６Ｖ以上の電荷輸送物質
としては、ヒドラゾン系化合物、スチルベン系化合物、
カルバゾール系化合物、ピラゾリン系化合物、オキサゾ
ール系化合物、チアゾール系化合物、トリアリールメタ
ン系化合物、ポリアリールアルカン類等から選択される
。また、電荷輸送材料は２種以上組み合わせてもよい。As the charge transport substance having an oxidation potential of 0.6 V or more used in the present invention, hydrazone compounds, stilbene compounds,
It is selected from carbazole compounds, pyrazoline compounds, oxazole compounds, thiazole compounds, triarylmethane compounds, polyarylalkanes, and the like. Further, two or more types of charge transport materials may be used in combination.
酸化電位は高いほど耐久性能は向上し、特に酸化電位が
０．７ｖ以上になるとその効果はより顕著なものになる
。The higher the oxidation potential, the better the durability performance, and especially when the oxidation potential is 0.7V or more, the effect becomes more remarkable.
本発明に用いられる一般式（１）で示される化合物とし
ては、例えば以下のものが挙げられる。Examples of the compound represented by the general formula (1) used in the present invention include the following.
これらの化合物は、プラスチックやゴムなどのラジカル
捕捉剤または酸化防止剤として知られているフェノール
誘導体のうちの１つである。これらの化合物は２種以上
組み合わせてもよい。These compounds are one of the phenol derivatives known as radical scavengers or antioxidants for plastics, rubber, etc. Two or more of these compounds may be used in combination.
本発明における表面層は、感光層が導電性支持体上に電
荷発生層、および電荷輸送層をこの順で積層した構造で
ある場合には電荷輸送層であり、また、電荷輸送層上に
電荷発生層を積層した構造の場合には電荷輸送物質を含
有する電荷発生層であり、また電荷発生物質と電荷輸送
物質を同一層中に混合した単層構造の場合には、この単
層である。In the present invention, the surface layer is a charge transport layer when the photosensitive layer has a structure in which a charge generation layer and a charge transport layer are laminated in this order on a conductive support; In the case of a structure in which a charge generation layer is laminated, it is the charge generation layer containing a charge transport substance, and in the case of a single layer structure in which a charge generation substance and a charge transport substance are mixed in the same layer, it is this single layer. .
電荷輸送物質は一般に低分子量であるためそれ自体では
成膜できず滑材粉体を分散させた感光層を形成するには
成膜性を有する樹脂をバインダーとして使用する。バイ
ンダー樹脂は成膜性のある高分子化合物であればよいが
、単独でもある程度の硬さを有すること、キャリア輸送
を妨害しないことなどの点からポリメタクリル酸エステ
ル、ポリカーボネート、ボリアリレート、ポリエステル
、ポリスルホンなどが好ましい。滑材粉体の含有量は感
光層の表面層構成材料に対して１〜３０重量％が適当で
あり、特には２〜２０重量％が好ましい。Charge transport materials generally have a low molecular weight and cannot be used to form a film by themselves, so a resin having film-forming properties is used as a binder to form a photosensitive layer in which lubricant powder is dispersed. The binder resin may be any polymeric compound that has film-forming properties, but polymethacrylic acid ester, polycarbonate, polyarylate, polyester, and polysulfone are recommended because they have a certain degree of hardness even when used alone and do not interfere with carrier transport. etc. are preferable. The content of the lubricant powder is suitably 1 to 30% by weight, particularly preferably 2 to 20% by weight, based on the material constituting the surface layer of the photosensitive layer.
含有率が１重量％未満では滑材粉体分散による表面改質
効果が十分でなく、一方３０重量％を超えると光透過性
が低下し、更にキャリアの移動性も低下する。If the content is less than 1% by weight, the surface modification effect due to dispersion of the lubricant powder will not be sufficient, while if it exceeds 30% by weight, the light transmittance will decrease and carrier mobility will also decrease.
前記一般式（Ｉ）で示される化合物の添加量は、感光層
の表面層構成材料１００重量部に対して、０．１重量％
〜３０重量％が適当であり、特には０．２重１％〜１０
重量％が好ましい。添加量が０．１重量％未満だと休止
メモリー防止効果が十分でなく、３０重１％を超えると
残留電位の上昇を招きやすい。The amount of the compound represented by the general formula (I) added is 0.1% by weight based on 100 parts by weight of the material constituting the surface layer of the photosensitive layer.
~30% by weight is appropriate, particularly 0.2% by weight ~10% by weight.
Weight percent is preferred. If the amount added is less than 0.1% by weight, the effect of preventing sleep memory will not be sufficient, and if it exceeds 30% by weight, the residual potential will tend to increase.
本発明の電子写真感光体を製造する場合、導電性支持体
としては、支持体自体が導電性をもつもの、例えばアル
ミニウム、アルミニウム合金、ステンレス等を用いるこ
とができ、その他にアルミニウム、アルミニウム合金、
酸化インジウム、酸化錫、酸化インジウム−酸化錫合金
等を真空蒸着法によって被膜形成した層を有するプラス
チック、導電性粒子を適当なバインダーとともにプラス
チックや前記導電性支持体の上に被膜した支持体、導電
性粒子をプラスチックや紙に含浸した支持体や導電性ポ
リマーを有するプラスチック等を用いることができる。When producing the electrophotographic photoreceptor of the present invention, the conductive support may be one that itself has conductivity, such as aluminum, aluminum alloy, stainless steel, etc. In addition, aluminum, aluminum alloy, stainless steel, etc. can be used.
Plastics having a layer formed by vacuum deposition of indium oxide, tin oxide, indium oxide-tin oxide alloy, etc., supports in which conductive particles are coated on plastics or the above-mentioned conductive supports together with a suitable binder, conductive Supports made of plastic or paper impregnated with conductive particles, plastics containing conductive polymers, etc. can be used.
導電性支持体と感光層の中間に、バリヤー機能と接着機
能をもつ下引層を設けることもできる。下引層は、カゼ
イン、ポリビニルアルコール、ニトロセルロール、エチ
レン−アクリル酸コポリマー。A subbing layer having barrier and adhesive functions can also be provided between the conductive support and the photosensitive layer. The subbing layer is casein, polyvinyl alcohol, nitrocellulose, and ethylene-acrylic acid copolymer.
ポリビニルブチラール、フェノール樹脂、ポリアミド（
ナイロン６、ナイロン６６、ナイロン６１０゜共重合ナ
イロン、アルコキシメチル化ナイロン等）、ポリウレタ
ン、ゼラチン、酸化アルミニウムなどによって形成でき
る。Polyvinyl butyral, phenolic resin, polyamide (
It can be formed from nylon 6, nylon 66, nylon 610° copolymerized nylon, alkoxymethylated nylon, etc.), polyurethane, gelatin, aluminum oxide, etc.
下引層の膜厚は０．１〜４０μｍ１好ましくは０．３〜
３μｍが適当である。The thickness of the subbing layer is 0.1 to 40 μm, preferably 0.3 to 40 μm.
3 μm is appropriate.
電荷発生物質としてセレン−テルル、ピリリウム、チオ
ピリリウム系染料、フタロシアニン系願料、アントアン
トロン顔料、ジベンズピレンキノン顔料、ピラントロン
顔料、トリスアゾ顔料、ジスアゾ顔料、アゾ顔料、イン
ジゴ顔料、キナクリドン系顔料、非対称キノシアニン、
キノシアニンなどを用いることができ、適当な分光感度
を得るために種々の電荷発生物質を混合して用いること
も可能である。As a charge generating substance, selenium-tellurium, pyrylium, thiopyrylium dyes, phthalocyanine pigments, anthoanthrone pigments, dibenzpyrenequinone pigments, pyranthrone pigments, trisazo pigments, disazo pigments, azo pigments, indigo pigments, quinacridone pigments, asymmetric quinocyanine ,
Quinocyanine and the like can be used, and it is also possible to use a mixture of various charge generating substances in order to obtain an appropriate spectral sensitivity.
滑材粉体の分散法としては一般的な分散手段、即ちホモ
ジナイザー、超音波、ボールミル、振動ミル、サンドミ
ル、アトライター、ロールミルなどを用いることが出来
る。適当な溶剤に溶解したバインダーに滑材粉体を加え
た後、上記分散法により分散する。これをバインダーと
電荷輸送物質と前記一般式（Ｄで表わされる化合物とを
溶剤に溶解した溶液に適量混合することにより滑材を含
有する表面層塗布液が得られる。As a method for dispersing the lubricant powder, general dispersion means such as a homogenizer, an ultrasonic wave, a ball mill, a vibration mill, a sand mill, an attritor, and a roll mill can be used. The lubricant powder is added to the binder dissolved in a suitable solvent, and then dispersed by the above-mentioned dispersion method. A surface layer coating liquid containing a lubricant can be obtained by mixing an appropriate amount of this with a solution in which a binder, a charge transport substance, and a compound represented by the general formula (D) are dissolved in a solvent.
塗工は、浸漬コーティング法、スプレーコーティング法
、マイヤーバーコーティング法、ブレードコーティング
法等のコーティング法を用いて行うことができる。乾燥
は、室温における指触乾燥後、加熱乾燥する方法が好ま
しい。加熱乾燥は、３０℃〜３００℃で５分〜２時間の
範囲の時間で静止または送風下で行うことができる。Coating can be performed using a coating method such as a dip coating method, a spray coating method, a Meyer bar coating method, or a blade coating method. For drying, it is preferable to dry to the touch at room temperature and then heat dry. Heat drying can be performed at 30° C. to 300° C. for a period of 5 minutes to 2 hours, either stationary or with ventilation.
本発明における酸化電位は、飽和カロメル電極を参照電
極、０．ＩＮ （ｎ−Ｂｕ）４Ｎ＋Ｃｌ０−４アセトニ
トリル溶液を電界液として用い、ポテンシャルスィーパ
−によって作用電極の電位をスィーブし、得られた電流
−電位曲線のピーク位匝をそのまま酸化電位の値として
求めた。The oxidation potential in the present invention is determined by using a saturated calomel electrode as a reference electrode and a 0.0. Using an IN (n-Bu)4N+Cl0-4 acetonitrile solution as an electrolyte, the potential of the working electrode was swept with a potential sweeper, and the peak position of the obtained current-potential curve was directly determined as the value of the oxidation potential.
詳しくは、サンプルを０．１Ｎ （ｎ−Ｂｕ） Ｎ”（
Ｊ’σ４アセトニトリル溶液の電解液に５〜１０ ｍ
ｍｏ１％の濃度になるように溶解する。そして、このサ
ンプル溶液に電圧を加え、低電位から直線的に電圧を変
化させたときの電流変化を測定し、電流−電位曲線を得
る。この電流−電位曲線における電流値の第１変曲点に
対応した電位値を本発明における酸化電位とした。In detail, the sample is 0.1N (n-Bu) N” (
5-10 m in the electrolyte of J'σ4 acetonitrile solution.
Dissolve to a concentration of mo1%. Then, a voltage is applied to this sample solution, and a current change is measured when the voltage is changed linearly from a low potential to obtain a current-potential curve. The potential value corresponding to the first inflection point of the current value in this current-potential curve was defined as the oxidation potential in the present invention.
実施例１
８０φＸ ３６０ ｍ ｍのアルミニウムシリンダーを
導電性支持体とし、これにポリアミド樹脂（商品名：ア
ミランＣＭ−８０００、東し製）の５％メタノール溶液
を浸漬法で塗布し、１μｍ厚の下引き層をもうけた。Example 1 An 80 φ x 360 mm aluminum cylinder was used as a conductive support, and a 5% methanol solution of polyamide resin (trade name: Amilan CM-8000, manufactured by Toshi) was coated on it by dipping method, and a 1 μm thick layer was coated on the conductive support. Created a pull layer.
次に下記構造式のジスアゾ顔料を１０部（重量部、以下
同様）、ポリビニルブチラール樹脂（商品名：エスレツ
クＢＸＬ、種水化学■製）６部およびシクロヘキサノン
１００部をｌφガラスピーズを用いたサンドミル装置で
２０時間分散した。この分散液にテトラヒドロフラン５
０〜１００（適宜）部を加えて下引き層上に塗布し、１
００℃、５分間の乾燥をして０．１５μｍ厚の電荷発生
層を形成した。Next, 10 parts (parts by weight, the same applies hereinafter) of a disazo pigment with the following structural formula, 6 parts of polyvinyl butyral resin (trade name: Eslec BXL, manufactured by Tanesui Kagaku ■), and 100 parts of cyclohexanone were mixed in a sand mill using lφ glass beads. The mixture was dispersed for 20 hours. Add 5% of tetrahydrofuran to this dispersion.
Add 0 to 100 parts (appropriately) and apply on the undercoat layer, 1
A charge generation layer having a thickness of 0.15 μm was formed by drying at 00° C. for 5 minutes.
次に、ポレオレフィン系の滑材粉体としてポリエチレン
樹脂粉体（商品名フローセン１３１４２製鉄化学製）、
電荷輸送物質として下記構造式の酸化電位０．６７ （
Ｖ）の化合物、
下記構造式の化合物、
（ＩＲＧＡＮＯＸ１３３０：日本チバガイギー製）及び
決着剤バインダーとしてビスフェノールＺ型ポリカーボ
ネート樹脂（蛮人化成製）を用意した。まず、ポリカー
ボネート樹脂２０部と上記電荷輸送物質２０部、及び同
じく上記休止メモリ一対策用化合物０．２部をモノクロ
ルベンゼン１００部に溶解し、これに上記ポリエチレン
樹脂粉体６部を加えステンレス製ボールミルで５０時間
分散し、さらにジクロルエタン２０部を加えて電荷輸送
層塗布液を作成した。この液を前記発生層上に塗布し、
１００℃で９０分間熱風乾燥して２０μｍ厚の電荷輸送
層を形成し、感光体１を製造した。Next, as polyolefin-based lubricant powder, polyethylene resin powder (trade name Frozen 13142 manufactured by Seitetsu Kagaku),
As a charge transport substance, the oxidation potential of the following structural formula is 0.67 (
A compound of V), a compound having the following structural formula (IRGANOX1330: manufactured by Ciba Geigy, Japan), and a bisphenol Z type polycarbonate resin (manufactured by Banjin Kasei) as a fixing agent binder were prepared. First, 20 parts of the polycarbonate resin, 20 parts of the above charge transporting substance, and 0.2 parts of the above-mentioned dormant memory countermeasure compound were dissolved in 100 parts of monochlorobenzene, 6 parts of the above polyethylene resin powder was added thereto, and the mixture was heated in a stainless steel ball mill. The mixture was dispersed for 50 hours, and 20 parts of dichloroethane was further added to prepare a charge transport layer coating solution. Applying this liquid on the generation layer,
A charge transport layer having a thickness of 20 μm was formed by drying with hot air at 100° C. for 90 minutes, thereby producing photoreceptor 1.
比較例１
電荷輸送物質として下記構造式
の酸化電位０．５４ （Ｖ）の化合物を用いる以外は実
施例１と同様に感光体２を製造した。Comparative Example 1 Photoreceptor 2 was produced in the same manner as in Example 1, except that a compound having the following structural formula and an oxidation potential of 0.54 (V) was used as the charge transport material.
比較例２
滑材粉体としてポリエチレン樹脂粉体を添加しない以外
は実施例１と同様に感光体３を製造した。Comparative Example 2 Photoreceptor 3 was produced in the same manner as in Example 1 except that polyethylene resin powder was not added as the lubricant powder.
比較例３
休止メモリ一対策用化合物
を添加しない以外は実施例１と同様に感光体４を製造し
た。Comparative Example 3 Photoreceptor 4 was produced in the same manner as in Example 1, except that no compound for counteracting sleep memory was added.
以上の感光体に対して、ブレード侵入ｆｉｌ、Ｏｍｍ、
クリーニングローラー相対速度１０６％になる様に改造
したキャノン製複写機ＮＰ−３５２５に搭載して１０万
枚耐久評価を行った結果を第１表に示す。For the above photoconductor, the blade penetration fil, Omm,
Table 1 shows the results of a 100,000-sheet durability evaluation conducted on a Canon copier NP-3525 modified to have a cleaning roller relative speed of 106%.
第 １ 表
第１表において電位変動とは耐久初期に暗部電位（ＶＤ
）を−６５０Ｖ、明部電位（ＶＬ）を−１５０Ｖ。Table 1 In Table 1, potential fluctuation refers to the dark potential (VD
) is -650V, and the bright area potential (VL) is -150V.
そのときの残留電位（ＶＲ）を−１０Ｖに設定し、１０
万枚耐久後の絶対値の変化分を示したものである。The residual potential (VR) at that time was set to -10V, and 10
The figure shows the change in absolute value after running for 10,000 sheets.
また休止メモリーとはｌＯ万枚耐久後感光体の回転を停
止し１０時間後のコロナ帯電器直下部分と他の部分との
画像濃度変化、あるいは電位（ＶＯ）の変化分で表現し
たものである。In addition, the pause memory is expressed by the change in image density between the area immediately below the corona charger and other areas, or the change in potential (VO) 10 hours after the rotation of the photoreceptor is stopped after 10,000 sheets have been used. .
第１表より、実施例１の感光体はｌＯ万枚耐久後も電位
変動９表面層の削れ共に小さく、休止メモリーも生じず
実用上高耐久性を示している。それに対して、比較例１
の低酸化電位の電荷輸送物質を使用したものは、電位変
動が大きく、比較例２の滑材を使用しないものについて
は表面層の削れが非常に大きく、それに伴って電位変動
が生じている。From Table 1, the photoreceptor of Example 1 exhibits high practical durability, with small potential fluctuations and small abrasion of the surface layer even after being used for 10,000 sheets, and no pause memory occurred. On the other hand, comparative example 1
The one using a charge transport material with a low oxidation potential has a large potential fluctuation, and the one of Comparative Example 2 without a lubricant has very large abrasion of the surface layer, and the potential fluctuation occurs accordingly.
また、感光体表面には傷も発生しており画像上にもそれ
が現われている。更に、比較例３の休止メモリ一対策用
化合物を添加していない感光体においては、電位変動、
削れに対しては実施例１と同様に優れているが、休止メ
モリーが電位で９０Ｖも生じ、画像としてもはっきりと
認められる。In addition, scratches have also occurred on the surface of the photoreceptor, which are also visible on the image. Furthermore, in the photoconductor of Comparative Example 3 to which no compound for preventing pause memory was added, potential fluctuations,
Although it is excellent in terms of scratching as in Example 1, a pause memory of as much as 90V is generated, which is clearly visible in the image.
実施例２
導電性支持体として８０φＸ ３６０ｍｍのアルミニウ
ムシリンダーを用い、これにポリアミド樹脂（商品名：
アミ９２０Ｍ−８０００，東し製）の５％メタノール溶
液を浸漬法で塗布し、０．５μｍ厚の下引き層を設けた
。Example 2 An 80φ x 360mm aluminum cylinder was used as a conductive support, and polyamide resin (trade name:
A 5% methanol solution of Ami 920M-8000 (manufactured by Toshi) was applied by dipping to form a 0.5 μm thick undercoat layer.
次に下記構造式のトリスアゾ顔料を１０部ポリビニルブ
チラール樹脂（商品名：エスレツクＢＬ−５．積水化学
製）６部、及びシクロヘキサノン５０部をガラスピーズ
を用いたサンドミル装置で分散した。この分散液にメチ
ルエチルケトン１００部を加えて下引き層上に塗布し、
０．２μｍ厚の電荷発生層を形成した。Next, 10 parts of a trisazo pigment having the following structural formula, 6 parts of polyvinyl butyral resin (trade name: Eslec BL-5, manufactured by Sekisui Chemical Co., Ltd.), and 50 parts of cyclohexanone were dispersed in a sand mill apparatus using glass beads. Add 100 parts of methyl ethyl ketone to this dispersion and apply it on the undercoat layer.
A charge generation layer having a thickness of 0.2 μm was formed.
次に、フッ素系樹脂粉体として四フッ化エチレン樹脂粉
体（商品名ニルブロンＬ−２ダイキン工業製）、電荷輸
送物質として下記構造式の化合物（酸化電位０．８１
（Ｖ））、休止メモリ一対策用化合物として第２表に示
す化合物、及び決着剤バインダーとしてビスフェノール
Ｚ型ポリカーボネート樹脂（奇人化成製）を準備した。Next, a tetrafluoroethylene resin powder (trade name: Nilburon L-2 manufactured by Daikin Industries, Ltd.) was used as a fluororesin powder, and a compound of the following structural formula (oxidation potential: 0.81) was used as a charge transport material.
(V)), the compounds shown in Table 2 as compounds for counteracting dormant memory, and bisphenol Z-type polycarbonate resin (manufactured by Kijin Kasei Co., Ltd.) as a fixing agent binder were prepared.
ヒ一」
以下、電荷輸送物質２０部、決着剤バインダー２０部を
用い実施例１と同様な方法により第２表に挙げた化合物
を用いて感光体を製造した。フッ素系樹脂粉体の添加量
は２部であり、休止メモリ一対策用化合物の添加量０．
２部であるが化合物ＮＯ，ｌについては０゜０５部（表
面層構成材料１００重量部に対して０．１２５重量％に
相当）、 ０．１部（０，２５重量％相当）、 ０．
５部（１，２５重量％相当）、 １．０部（２゜５重量
％相当）、 ４．０部（１００重量％相当）の５水準
である。Hereinafter, a photoreceptor was manufactured using the compounds listed in Table 2 in the same manner as in Example 1 using 20 parts of a charge transport material and 20 parts of a fixing agent binder. The amount of the fluororesin powder added is 2 parts, and the amount of the compound for preventing sleep memory is 0.
2 parts, but for compound NO,1, it is 0.05 parts (equivalent to 0.125% by weight based on 100 parts by weight of the surface layer constituent material), 0.1 part (equivalent to 0.25% by weight), 0.
There are five levels: 5 parts (equivalent to 1.25% by weight), 1.0 parts (equivalent to 2.5% by weight), and 4.0 parts (equivalent to 100% by weight).
以上の感光体について評価した結果を第３表に示す。評
価には、発振波長７８０ｎｍの半導体レーザーを搭載し
、侵入量１．０ｍｍのクリーニングブレードを有し、ト
ナーとキャリアより成る２成分現像剤を用いたイメージ
スキャン反転現像方式のレーザービームプリンタを用い
た。上表において電位変動とは耐久初期に暗部電位を一
６００Ｖ、明部電位を一１５０Ｖ、そのときの残留電位
が一１０Ｖという状態に設定し、１部万枚耐久後の絶対
値の変化分を示したものである。また休止メモリーに関
しては実弟 ３ 表
施例１と同じ測定法であるが、反転現像であるため画像
濃度変化は実施例１とは逆に濃度上昇の方向で現われる
。Table 3 shows the results of evaluating the above photoreceptors. For the evaluation, we used an image scan reversal development type laser beam printer equipped with a semiconductor laser with an oscillation wavelength of 780 nm, a cleaning blade with a penetration depth of 1.0 mm, and a two-component developer consisting of toner and carrier. . In the table above, the potential fluctuation is defined as the change in absolute value after the dark area potential is set to -600V, the bright area potential is -150V, and the residual potential is -110V at the initial stage of durability. This is what is shown. Regarding the pause memory, the measurement method is the same as in Example 1, but since reversal development is used, the change in image density appears in the direction of increasing density, contrary to Example 1.
第３表よりわかる様に、本発明記載の構造を有する化合
物を添加した系は明らかに他の構造の添加物より休止メ
モリーに対する防止効果が優れ、かつ電位変動等の悪影
響が少ない。As can be seen from Table 3, the system to which the compound having the structure described in the present invention is added is clearly more effective in preventing pause memory than additives having other structures, and has less negative effects such as potential fluctuations.
実施例３
８０φＸ ３６０ ｍ ｍのアルミニウムシリンダーを
導電性支持体とし、これに°ポリアミド樹脂（商品名：
アミランＣＭ−８０００東し製）の５％メタノール溶液
を浸漬法で塗布し、１μｍ厚の下引き層を設けた。次に
下記構造式のジスアゾ顔料を１０部ポリビニルブチラー
ル樹脂（商品名：エスレツクＢＬ−３．積水化学製）６
部、及びシクロへキサノン５０部をガラスピーズを用い
たサンドミル装置で分散した。この分散液にメチルエチ
ルケトン１００部を加えて下引き層上に塗布し０．２μ
ｍ厚の電荷発生層を形成した。Example 3 An aluminum cylinder of 80 φ x 360 mm was used as a conductive support, and polyamide resin (trade name:
A 5% methanol solution of Amiran CM-8000 (manufactured by Toshi) was applied by dipping to provide a 1 μm thick undercoat layer. Next, add 10 parts of a disazo pigment having the following structural formula to 6 parts of polyvinyl butyral resin (trade name: Eslec BL-3. manufactured by Sekisui Chemical).
1 part and 50 parts of cyclohexanone were dispersed using a sand mill apparatus using glass beads. Add 100 parts of methyl ethyl ketone to this dispersion and apply it on the undercoat layer to 0.2μ
A charge generation layer having a thickness of m was formed.
次に、フッ化カーボン系粉体としてフッ化黒鉛（ダイキ
ン工業製）、休止メモリ一対策用化合物として実施例１
と同一の化合物、電荷輸送物質として第４表に示す化合
物、及び決着剤バインダーとしてビスフェノールＺ型ポ
リカーボネート樹脂（奇人化成製）を準備した。Next, fluorinated graphite (manufactured by Daikin Industries) was used as a fluorinated carbon-based powder, and Example 1 was used as a compound for countermeasures against dormant memory.
The same compound as above, the compound shown in Table 4 as a charge transport substance, and a bisphenol Z type polycarbonate resin (manufactured by Kijin Kasei) as a fixing agent binder were prepared.
第 ４ 表
〈表４の続き〉
以下、電荷輸送物質２０部、バインダー２０部を用い実
施例１と同様な方法により第４表に挙げた電荷輸送物質
を用い感光体を製造した。フッ化黒鉛粉体の添加量は２
部であり、休止メモリ一対策用化合物の添加量は０．２
部である。Table 4 (continued from Table 4) Photoreceptors were manufactured using the charge transport materials listed in Table 4 in the same manner as in Example 1 using 20 parts of the charge transport material and 20 parts of the binder. The amount of fluorinated graphite powder added is 2
%, and the amount of the compound for resting memory is 0.2
Department.
以上の感光体について実施例１と同様に評価した結果を
第５表に示す。The above photoreceptors were evaluated in the same manner as in Example 1, and the results are shown in Table 5.
第 ５ 表
表より明らかなように電荷輸送物質の酸化電位が０．６
（Ｖ）より低いものは休止メモリーに関しては優れて
いるが、電位変動が酸化電位０．６ （Ｖ）より高いも
のを使用した場合に比べて大きいことがわかる。As is clear from Table 5, the oxidation potential of the charge transport substance is 0.6.
It can be seen that although those with a lower oxidation potential of 0.6 (V) are superior in terms of rest memory, the potential fluctuations are larger than those using oxidation potentials higher than 0.6 (V).
実施例４
８０φＸ ３６０ ｍ ｍのアルミニウムシリンダーを
導電性支持体とし、これにポリアミド樹脂（商品名：ア
ミランＣＭ−８０００東し製）の５％メタノール溶液を
浸漬法で塗布し、１μｍ厚の下引き層を設けた。次に下
記構造式のジスアゾ顔料を１０部ポリビニルブチラール
樹脂（商品名：エスレツクＢＸＬ、積水化学製）６部お
よびシクロヘキサノン１００部をガラスピーズを用いた
サンドミル装置で２０時間分散した。Example 4 An 80 φ x 360 mm aluminum cylinder was used as a conductive support, and a 5% methanol solution of polyamide resin (trade name: Amilan CM-8000 manufactured by Toshi) was applied by dipping to the conductive support, and a 1 μm thick undercoating was applied. Layers were provided. Next, 10 parts of a disazo pigment having the following structural formula, 6 parts of polyvinyl butyral resin (trade name: Eslec BXL, manufactured by Sekisui Chemical Co., Ltd.) and 100 parts of cyclohexanone were dispersed for 20 hours in a sand mill apparatus using glass beads.
この分散液にテトラヒドロフラン５０〜１００部を加え
て下引き層上に塗布し、１００°Ｃ，５分間の乾燥をし
て０．１５μｍ厚の電荷発生層を形成した。50 to 100 parts of tetrahydrofuran was added to this dispersion, which was coated on the undercoat layer, and dried at 100°C for 5 minutes to form a charge generation layer with a thickness of 0.15 μm.
次に、フッ素系樹脂粉体として四フッ化エチレン樹脂粉
体（商品名；ルブロンＬ−２ダイキン工業製）、電荷輸
送物質として下記構造式の化合物（酸化電位０．６６
（Ｖ））、休止メモリ一対策用化合物として実施例１と
同じ化合物、及び決着剤バインダーとしてビスフェノー
ルＺ型ポリカーボネート樹脂（奇人化成製）を準備した
。以下、電荷輸送物質２０部、バインダー２０部を用い
実施例１と同様な方法により、四フッ化エチレン樹脂粉
体の添加量を表面層構成材料（電荷輸送物質＋バインダ
ー）に対する重量分率で１．０重量％、 １０．０重
量％。Next, a tetrafluoroethylene resin powder (trade name: Lublon L-2 manufactured by Daikin Industries) was used as a fluororesin powder, and a compound of the following structural formula (oxidation potential 0.66) was used as a charge transport material.
(V)), the same compound as in Example 1 was prepared as a compound for dealing with dormant memory, and a bisphenol Z type polycarbonate resin (manufactured by Kijin Kasei Co., Ltd.) was prepared as a fixing agent binder. Hereinafter, in the same manner as in Example 1 using 20 parts of a charge transport substance and 20 parts of a binder, the amount of tetrafluoroethylene resin powder added was adjusted to 1% by weight relative to the surface layer constituent material (charge transport substance + binder). .0% by weight, 10.0% by weight.
３０重量％と３水準に変化させた感光体を製造した。Photoreceptors were manufactured with three levels of 30% by weight.
以上の感光体について実施例１と同様に評価した結果を
第６表に示す。The above photoreceptors were evaluated in the same manner as in Example 1, and the results are shown in Table 6.
第 ６ 表
実施例５
実施例４と同様にして導電性支持体上に下引き層までを
塗布した。次に実施例１で用いた電荷輸送物質１５部、
ポリカーボネートＺ樹脂１０部をジクロルメタン５０部
、モノクロルベンゼン１０部に溶解した溶液を下引き層
上に塗布し、１５μｍ厚の電荷輸送層を形成した。次に
実施例１で用いたジスアゾ顔料を４部、ポリカーボネー
トＺ樹脂を１０部、及びシクロへキサノン５０部を１φ
ガラスピーズを用いたサンドミル装置で２０時間分散し
電荷発生層分散液１を形成した。Table 6 Example 5 In the same manner as in Example 4, layers up to the undercoat layer were coated on the conductive support. Next, 15 parts of the charge transport material used in Example 1,
A solution prepared by dissolving 10 parts of polycarbonate Z resin in 50 parts of dichloromethane and 10 parts of monochlorobenzene was applied onto the undercoat layer to form a charge transport layer with a thickness of 15 μm. Next, 4 parts of the disazo pigment used in Example 1, 10 parts of polycarbonate Z resin, and 50 parts of cyclohexanone were added to 1φ
Dispersion was carried out for 20 hours using a sand mill device using glass beads to form charge generation layer dispersion 1.
次に四フッ化エチレン樹脂粉体、分散剤としてフッ素系
アクリルオリゴマー、上記ヒドラゾン化合物、ポリカー
ボネートＺ樹脂を用意した。先ずポリカーボネート樹脂
１０部、ヒドラゾン化合物４部。Next, a tetrafluoroethylene resin powder, a fluorine-based acrylic oligomer as a dispersant, the above-mentioned hydrazone compound, and polycarbonate Z resin were prepared. First, 10 parts of polycarbonate resin and 4 parts of hydrazone compound.
フッ素系アクリルオリゴマー０．１５部をジクロルメタ
ンＩＯ部、モノクロルベンゼン４０部に溶解する。0.15 parts of fluorine-based acrylic oligomer is dissolved in 10 parts of dichloromethane and 40 parts of monochlorobenzene.
ついでこの中に四フッ化エチレン樹脂粉体１．５部を加
えステンレス製ボールミルで４０時間分散した。Next, 1.5 parts of tetrafluoroethylene resin powder was added to this and dispersed in a stainless steel ball mill for 40 hours.
更にこの液中に実施例１で用いた添加剤０．３部を添加
し電荷輸送層液１を調製した。この電荷発生層分散液１
と電荷輸送層液１を混合した塗料を前記電荷輸送層上に
塗布し、５μｍ厚の電荷発生層を形成し、感光体を製造
した。Further, 0.3 part of the additive used in Example 1 was added to this liquid to prepare charge transport layer liquid 1. This charge generation layer dispersion 1
A coating material prepared by mixing the sample and Charge Transport Layer Liquid 1 was applied onto the charge transport layer to form a charge generation layer having a thickness of 5 μm, thereby producing a photoreceptor.
実施例１で用いた複写機を正帯電できる様に改造し、こ
の感光体を実施例１と同様に評価したが、１０万枚耐久
後も電位変動、感光体の削れ、休止メモリー共に小さく
高画質のコピーが得られた。The copying machine used in Example 1 was modified so that it could be positively charged, and this photoconductor was evaluated in the same manner as in Example 1, but even after 100,000 copies, potential fluctuations, photoconductor scraping, and pause memory were small and high. A quality copy was obtained.
比較例４
実施例５の比較例として添加剤を加えない感光体を製造
し、同様の評価を行ったところｌＯ万枚後休止メモリー
が画像上に現れ、電気的にも△Ｖｄが一１６０Ｖと太き
（変動した。Comparative Example 4 As a comparative example of Example 5, a photoreceptor without additives was manufactured and the same evaluation was performed. After 10,000 sheets, a pause memory appeared on the image, and electrically, △Vd was -160V. Thick (varied.
実施例６
導電性支持体として８０φＸ３６Ｑｍｍのアルミニウム
シリンダーを用意した。Example 6 An aluminum cylinder of 80φ×36Qmm was prepared as a conductive support.
一方、酸化アンチモン１０％を含有する酸化スズを酸化
チタンに対して７５重量％になるように被覆した導電性
粉体１００部をレゾール系フェノール樹脂１００部及び
メタノール３０部、メチルセロソルブ１００部より成る
溶液に加えボールミル装置でよく分散し塗料とした。こ
の塗料を導電性支持体上に浸漬塗布し１４０℃で３０分
間加熱硬化させ２０μｍの導電性下引き層をもうけた。On the other hand, 100 parts of conductive powder coated with tin oxide containing 10% antimony oxide so as to be 75% by weight relative to titanium oxide was mixed with 100 parts of resol type phenolic resin, 30 parts of methanol, and 100 parts of methyl cellosolve. It was added to the solution and dispersed well using a ball mill to form a paint. This coating material was dip-coated onto a conductive support and cured by heating at 140° C. for 30 minutes to form a conductive undercoat layer of 20 μm.
この上にポリアミド樹脂（６−６６−６１０〜１２４元
ナイロン共重合体）１部および８−ナイロン樹脂（メト
キシメチル化６ナイロン メトキシ化率３０％）３部を
メタノール５０部、フタノール４０部から成る溶剤に溶
解させた塗布液を浸漬法で塗布し、７０℃、１０分間乾
燥後０．５μｍ厚の下引き層をもうけた。On top of this, 1 part of polyamide resin (6-66-610 to 124 element nylon copolymer) and 3 parts of 8-nylon resin (methoxymethylated 6 nylon methoxylation rate 30%) were added to 50 parts of methanol and 40 parts of phthanol. A coating solution dissolved in a solvent was applied by dipping, and after drying at 70° C. for 10 minutes, a 0.5 μm thick undercoat layer was formed.
次に下記構造式のジスアゾ顔料を１０部ポリビニルベン
ザール樹脂６部及びシクロへキサノン５０部をガラスピ
ーズを用いたサンドミル装置で２０時間分散した（分散
液１）。Next, 10 parts of a disazo pigment having the following structural formula, 6 parts of polyvinylbenzal resin, and 50 parts of cyclohexanone were dispersed for 20 hours in a sand mill apparatus using glass beads (Dispersion 1).
次に下記構造式のトリスアゾ顔料を１０部、ポリビニル
ベンザール樹脂６部及びシクロへキサノン５０部をガラ
スピーズを用いたサンドミル装置で２０時間分散した（
分散液２）。Next, 10 parts of trisazo pigment having the following structural formula, 6 parts of polyvinylbenzal resin, and 50 parts of cyclohexanone were dispersed for 20 hours in a sand mill using glass beads (
Dispersion 2).
この分散液ｌを３０部、分散液２をｌＯ部混合し、更に
テトラヒドロフランを５０〜６０部加えて上記下引き層
上に塗布し１００℃５分間の乾燥して０．２５μｍ厚の
電荷発生層を形成した。30 parts of this dispersion 1 and 10 parts of dispersion 2 were mixed, further 50 to 60 parts of tetrahydrofuran were added, and the mixture was coated on the undercoat layer and dried at 100°C for 5 minutes to form a charge generation layer with a thickness of 0.25 μm. was formed.
次に、フッ素系樹脂粉体として四フッ化エチレン樹脂粉
体、その分散助剤としてフッ素系アクリルオリゴマー電
荷輸送物質として下記構造式の化合物（酸化電位０．８
１Ｖ）、休止メモリ対策用化合物として実施例１と同一
の化合物、及び決着剤バインダーとしてビスフェノール
Ｚ型ポリカーボネート樹脂を準備した。以下実施例１と
同様な方法で感光体を製造し、同様な評価を行った。結
果を第７表に示す。Next, tetrafluoroethylene resin powder was used as the fluororesin powder, and a fluorine-based acrylic oligomer was used as the dispersion aid.A compound of the following structural formula (oxidation potential: 0.8
1V), the same compound as in Example 1 was prepared as a compound for preventing sleep memory, and bisphenol Z type polycarbonate resin was prepared as a fixing agent binder. A photoreceptor was manufactured in the same manner as in Example 1 and evaluated in the same manner. The results are shown in Table 7.
第 ７ 表
実施例１と同様本感光体は１０万枚耐久後も電位変動１
表面層の削れ共に小さく、休止メモリーも生じず実用上
高耐久性を示しているものである。Table 7 Similar to Example 1, this photoconductor shows potential fluctuation 1 even after 100,000 sheets
There is little abrasion of the surface layer, no pause memory occurs, and it shows high durability in practical use.
以上のように、滑材粉体と、酸化電位が０．６Ｖ以上の
電荷輸送物質と、特定構造を有する化合物を含有する本
発明になる電子写真感光体によれば、電子写真物性的お
よび機械的な耐久性に優れ、常に安定した高品質の画像
を得ることができる。As described above, according to the electrophotographic photoreceptor of the present invention containing a lubricant powder, a charge transport substance having an oxidation potential of 0.6 V or more, and a compound having a specific structure, the electrophotographic photoreceptor has electrophotographic physical properties and mechanical properties. It has excellent durability and allows you to always obtain stable, high-quality images.
Claims (5)
において、表面層が、滑材粉体と、酸化電位０．６Ｖ以
上の電荷輸送物質と、 一般式（ I ） ▲数式、化学式、表等があります▼ ▲数式、化学式、
表等があります▼ 〔ただし、Ｘ＿１、Ｘ＿２およびＸ＿３は、−Ｈまたは
−ＣＨ＿３を示し、Ｘ＿４およびＸ＿５は、▲数式、化
学式、表等があります▼または▲数式、化学式、表等が
あります▼を示す。〕 で示される化合物とを含有することを特徴とする電子写
真感光体。(1) In an electrophotographic photoreceptor having a photosensitive layer on a conductive support, the surface layer includes a lubricant powder, a charge transport substance with an oxidation potential of 0.6 V or more, and a general formula (I) ▲Mathematical formula, chemical formula , tables, etc.▼ ▲Mathematical formulas, chemical formulas,
There are tables, etc. ▼ [However, X_1, X_2 and X_3 indicate -H or -CH_3, and X_4 and X_5 are ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ show. ] An electrophotographic photoreceptor comprising a compound represented by the following.
造を有しており、かつ電荷発生層上に電荷輸送層が塗設
されている特許請求の範囲第１項記載の電子写真感光体
。(2) The electrophotography according to claim 1, wherein the photosensitive layer has a laminated structure of a charge generation layer and a charge transport layer, and the charge transport layer is coated on the charge generation layer. Photoreceptor.
造を有しており、かつ電荷輸送層上に電荷発生層が塗設
されている特許請求の範囲第１項記載の電子写真感光体
。(3) Electrophotography according to claim 1, wherein the photosensitive layer has a laminated structure of a charge generation layer and a charge transport layer, and the charge generation layer is coated on the charge transport layer. Photoreceptor.
する単一層からなる特許請求の範囲第１項記載の電子写
真感光体。(4) The electrophotographic photoreceptor according to claim 1, wherein the photosensitive layer is a single layer containing a charge-generating substance and a charge-transporting substance.
ン系粉体、フッ化カーボン粉体である特許請求の範囲第
１項記載の電子写真感光体。(5) The electrophotographic photoreceptor according to claim 1, wherein the lubricant powder is a fluororesin powder, a polyolefin powder, or a fluorocarbon powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10646288A JPH01276147A (en) | 1988-04-27 | 1988-04-27 | Electrophotographic sensitive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10646288A JPH01276147A (en) | 1988-04-27 | 1988-04-27 | Electrophotographic sensitive body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01276147A true JPH01276147A (en) | 1989-11-06 |
| JPH0560859B2 JPH0560859B2 (en) | 1993-09-03 |
Family
ID=14434241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10646288A Granted JPH01276147A (en) | 1988-04-27 | 1988-04-27 | Electrophotographic sensitive body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01276147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1039525A (en) * | 1996-07-26 | 1998-02-13 | Konica Corp | Electrophotographic photoreceptor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60129751A (en) * | 1983-12-16 | 1985-07-11 | Mita Ind Co Ltd | Stabilized zinc oxide master for electrophotography |
| JPS60188956A (en) * | 1984-03-09 | 1985-09-26 | Mita Ind Co Ltd | Electrophotographic sensitive body superior in printing resistance |
| JPS61156131A (en) * | 1984-12-24 | 1986-07-15 | ゼロツクス コーポレーシヨン | Photoconductive image forming material |
| JPS61156052A (en) * | 1984-12-24 | 1986-07-15 | ゼロツクス コーポレーシヨン | Photoconductive image forming material |
-
1988
- 1988-04-27 JP JP10646288A patent/JPH01276147A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60129751A (en) * | 1983-12-16 | 1985-07-11 | Mita Ind Co Ltd | Stabilized zinc oxide master for electrophotography |
| JPS60188956A (en) * | 1984-03-09 | 1985-09-26 | Mita Ind Co Ltd | Electrophotographic sensitive body superior in printing resistance |
| JPS61156131A (en) * | 1984-12-24 | 1986-07-15 | ゼロツクス コーポレーシヨン | Photoconductive image forming material |
| JPS61156052A (en) * | 1984-12-24 | 1986-07-15 | ゼロツクス コーポレーシヨン | Photoconductive image forming material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1039525A (en) * | 1996-07-26 | 1998-02-13 | Konica Corp | Electrophotographic photoreceptor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0560859B2 (en) | 1993-09-03 |
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