JPH0396980A - Electrophotographic device - Google Patents
Electrophotographic deviceInfo
- Publication number
- JPH0396980A JPH0396980A JP23285789A JP23285789A JPH0396980A JP H0396980 A JPH0396980 A JP H0396980A JP 23285789 A JP23285789 A JP 23285789A JP 23285789 A JP23285789 A JP 23285789A JP H0396980 A JPH0396980 A JP H0396980A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- photoreceptor
- blade
- toner
- photosensitive body
- 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.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 claims abstract description 99
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 108091008695 photoreceptors Proteins 0.000 claims description 83
- 239000010410 layer Substances 0.000 description 37
- 229920005989 resin Polymers 0.000 description 15
- 239000011347 resin Substances 0.000 description 15
- 239000000049 pigment Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- -1 borisulfone Polymers 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000005018 casein Substances 0.000 description 3
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound 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 3
- 235000021240 caseins Nutrition 0.000 description 3
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- 239000011521 glass Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 2
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229940097275 indigo Drugs 0.000 description 2
- 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 2
- 230000007774 longterm Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- DTCCVIYSGXONHU-CJHDCQNGSA-N (z)-2-(2-phenylethenyl)but-2-enedioic acid Chemical compound OC(=O)\C=C(C(O)=O)\C=CC1=CC=CC=C1 DTCCVIYSGXONHU-CJHDCQNGSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004419 Panlite Substances 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000004744 fabric Substances 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
- 229910052737 gold Inorganic materials 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920002382 photo conductive polymer Polymers 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
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- DNXIASIHZYFFRO-UHFFFAOYSA-N pyrazoline Chemical compound C1CN=NC1 DNXIASIHZYFFRO-UHFFFAOYSA-N 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- 238000007740 vapor deposition Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Cleaning In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は電子写真複写機及びプリンタなど静電写真プ
ロセスを利用した画像形成装置、特にそのクリーニング
機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus using an electrophotographic process such as an electrophotographic copying machine and a printer, and particularly to a cleaning mechanism thereof.
［従来の技術］
感光体に静電的に形成したトナー像を紙を主とするシー
ト状の転写材に転写する工程をくり返す周知の画像形成
装置にあっては該トナー像を形成するトナー全量が転写
の都度、転写材に転移するとは限らないので、転写ごと
に感光体表面に残る残留トナーを充分に除去することが
通常においては必須である。[Prior Art] In a well-known image forming apparatus that repeats the process of transferring a toner image electrostatically formed on a photoreceptor to a sheet-like transfer material mainly made of paper, the toner that forms the toner image is Since not all of the toner is transferred to the transfer material each time the toner is transferred, it is usually essential to sufficiently remove the residual toner remaining on the surface of the photoreceptor each time the toner is transferred.
このためのクリーニング手段として、従来からゴムなど
の弾性材料からなるクリーニングブレードや、織物もし
くは樹脂等からなるベルト状部材又はファーブラシもし
くは磁気ブラシなどのブラシ類が用いられてきた。クリ
ーニングブレードを用いる場合に、その端縁の一方のエ
ッジを感光体表面に圧接してこの部位に到来する残余ト
ナーをかき落すように構成された機構が構成が簡単で生
産コストも低く、しかもトナー除去機能に優れているの
で、広く実用に供されていることはよく知られている。As a cleaning means for this purpose, a cleaning blade made of an elastic material such as rubber, a belt-like member made of woven fabric or resin, or brushes such as a fur brush or a magnetic brush have conventionally been used. When using a cleaning blade, a mechanism configured to press one edge of the cleaning blade against the surface of the photoconductor to scrape off residual toner that reaches this area is simple in construction and low in production cost, and it also removes toner. It is well known that it is widely used in practical use because of its excellent removal function.
第２図はこのようなクリーニング機構の典型的な一例を
略示する見取図であって、紙面に垂直方向に延び、矢印
方向に回転する円筒状の感光体】の軸に平行にクリーニ
ング機構２が近接配置してあり、これに設置した、紙面
に垂直方向に延びるクリーニングブレード３の自由端縁
の一方のエッジ３ａが感光体１表面に圧接されており、
不図示の転写部位において、転写に寄与せずに感光体表
面に残ったトナーが、その回転に伴って前記クリニング
ブレード（以下、単に「ブレード」と略称することがあ
る）３の当接エッジに達すると、これによってかき落さ
れることになる。FIG. 2 is a sketch diagram schematically showing a typical example of such a cleaning mechanism, in which the cleaning mechanism 2 is installed parallel to the axis of a cylindrical photoreceptor extending perpendicular to the plane of the paper and rotating in the direction of the arrow. One edge 3a of the free edge of the cleaning blade 3, which is arranged close to the cleaning blade 3 and extends in a direction perpendicular to the plane of the paper, is pressed against the surface of the photoreceptor 1;
At a transfer site (not shown), toner remaining on the surface of the photoconductor without contributing to transfer is brought to the contact edge of the cleaning blade (hereinafter sometimes simply referred to as "blade") 3 as it rotates. When it reaches this point, it will be scraped off.
この際、クリーニングブレード３の自由端縁は図示のよ
うな向きに（感光体の回転方向に対してカウンタ方向）
に、感光体１に圧接する方式［第２（ａ）図］がトナー
の除去に有効で、よく採用されている方式であるが、そ
の反面で、以下に述べるような欠点を伴っている。At this time, the free edge of the cleaning blade 3 should be oriented as shown (counter direction with respect to the rotational direction of the photoreceptor).
The method of pressing the toner against the photoreceptor 1 [FIG. 2(a)] is effective in removing toner and is a commonly used method, but on the other hand, it has the following drawbacks.
即ち、前記クリーニングブレード３の当接エッジ３ａが
安定したクリーニング機能を奏するには、全長にわたっ
て均一な圧力で感光体１の表面に圧接される必要がある
。しかし、感光体１の表面には、使用によって、トナー
の融着が生じたり、装置内の高電圧部材によるコロナ生
成物、紙粉及びこれから生ずる析出物などが感光体１に
付着したりしてその表面に凹凸が生ずることは避け難い
。この原因から、クリーニングブレード３と感光体１の
表面との摩擦が極端に大きくなって［第２（ｂ）図コ、
クリーニングブレード３の端部がめくれ上ることによる
裏側エッジ３ｂの当接が生じたことに起因するクリーニ
ング機能喪失があった。特に感光休１の表面感光層が有
機半導体で形成されたものににおいては、クリーニング
ブレード３との摩擦が比較的大きいので、クリーニング
ブレード３のめくれが発生しやすくなる。また、近来多
色コピーの普及にともなって多用されるようになって来
ている非磁性現像剤の場合には、ブレード３の両端部か
らクリーニング不良又はブレードめくれが発生する傾向
があることが判明している。That is, in order for the abutting edge 3a of the cleaning blade 3 to perform a stable cleaning function, it needs to be brought into contact with the surface of the photoreceptor 1 with uniform pressure over its entire length. However, due to use, toner may be fused onto the surface of the photoreceptor 1, and corona products, paper powder, and deposits generated from the high voltage components in the device may adhere to the photoreceptor 1. It is unavoidable that unevenness will occur on the surface. Due to this reason, the friction between the cleaning blade 3 and the surface of the photoreceptor 1 becomes extremely large [see Fig. 2(b)].
There was a loss of cleaning function due to the abutment of the back side edge 3b due to the end of the cleaning blade 3 curling up. Particularly in the case where the surface photosensitive layer of the photosensitive layer 1 is formed of an organic semiconductor, the friction with the cleaning blade 3 is relatively large, so that the cleaning blade 3 is likely to turn over. Additionally, in the case of non-magnetic developers, which have come into widespread use as multi-color copying has become popular in recent years, it has been found that poor cleaning or blade curling tends to occur from both ends of the blade 3. are doing.
更に、完全にクリーニングされずに感光体に付着した紙
粉はコロナ帯電による繰り返し使用で、吸湿時に電気抵
抗の著しい低下を生じさせる結果、画像ボケや画像流れ
なども引起す場合がある。Further, paper powder that has not been completely cleaned and adheres to the photoreceptor is repeatedly used due to corona charging, and when it absorbs moisture, it causes a significant decrease in electrical resistance, which may cause image blurring or image blurring.
ブレード３を用いたクリーニングでは、ブレード３の損
傷又は振動発生によるトナーのすり抜けが起こる場合が
あり、それがクリーニング不良につながる。In cleaning using the blade 3, toner may slip through due to damage to the blade 3 or vibration, which leads to poor cleaning.
特に平均粒径の小さいトナーを用いた場合のブレードク
リーニングにおいては、トナーのすり抜けが起こりやす
い。また、粒径が小さいためにトナーの表面積が大きく
なり、その結果として吸湿などによってトナーの凝集が
起こりやすい状態になる。ブレード３のエッジ部分でト
ナーが凝集すると、ブレード３と感光休１との間の潤滑
剤としての作用も果すトナーの絶対量が減少する結果、
ブレード３のめくれが発生し易くなる。上述の様に平均
粒径の小さいトナーを用いた場合は、トナーのすり抜け
やブレードめくれによるクリーニング不良が発生しやす
いことが原因となって、安定して耐久画像を得ることが
困難である。Particularly in blade cleaning when toner with a small average particle size is used, toner tends to slip through. Furthermore, since the particle size is small, the surface area of the toner becomes large, and as a result, the toner tends to aggregate due to moisture absorption. When the toner aggregates at the edge of the blade 3, the absolute amount of toner, which also acts as a lubricant between the blade 3 and the photoreceptor 1, decreases.
The blade 3 is more likely to turn over. As described above, when toner with a small average particle size is used, it is difficult to stably obtain durable images because cleaning failures due to toner slip-through and blade turning are likely to occur.
しかも、ブレードを用いたクリーニングにおいては、ブ
レード３と感光体１との摩擦係数が比較的大きいために
、耐久使用による感光体表面の摩擦や削れがおこり易い
。特に耐摩耗性の比較的劣っている有機感光体は削られ
易いため、耐久によって安定な画像を得ることが困難で
ある。Moreover, in cleaning using a blade, since the coefficient of friction between the blade 3 and the photoreceptor 1 is relatively large, the surface of the photoreceptor is likely to be rubbed or scraped due to long-term use. In particular, since organic photoreceptors with relatively poor abrasion resistance are easily scratched, it is difficult to obtain stable images over a long period of time.
このような欠点を解消するために、例えば特開昭６１−
２１２８８１号公報などに見られるように感光体に当接
するブレードの両端部分を切除するように構成したもの
が提案されているが、このような手段では両端へ横走り
したトナーが端部から飛敗して転写材や装置内部を汚染
する欠陥を免がれなかった。クリーニング部材としてベ
ルト状部材やブラシ類を用いたクリーニングにおいても
、トナーのすり抜けや感光体の削れ、クリーニング不良
などの問題が依然としてあり、クリーニング条件の設定
が非常に困難であった。In order to eliminate such drawbacks, for example,
As seen in Japanese Patent Application No. 212881, it has been proposed to cut off both ends of the blade that contacts the photoconductor, but with such a means, the toner that runs sideways to both ends is blown away from the ends. This resulted in defects that contaminated the transfer material and the inside of the device. Even in cleaning using a belt-like member or a brush as a cleaning member, there are still problems such as toner slipping through, photoreceptor abrasion, and poor cleaning, and it has been very difficult to set cleaning conditions.
［発明が解決しようとする課題］
本発明は前述のような事態に対処すべく完成されたもの
で、クリーニング機構においてブレードのめくれやトナ
ーのすり抜けを殆どおこさず、常時安定したクリーニン
グを遂行できるような電子写真装置を提供することを目
的とするものである。[Problems to be Solved by the Invention] The present invention was completed in order to deal with the above-mentioned situation, and it is possible to perform stable cleaning at all times without causing the blade to turn over or toner to slip through in the cleaning mechanism. The purpose of the present invention is to provide an electrophotographic device that is easy to use.
更に、本発明はクリーニング機構において、感光体の摩
耗及び削れを低減させ得る電子写真装置の提供を目的と
するものである。A further object of the present invention is to provide an electrophotographic apparatus in which wear and abrasion of the photoreceptor can be reduced in the cleaning mechanism.
［課題を解決するための手段（及び作用）］上記の目的
を解決するために本発明は感光体にクリーニング部材を
当接させてクリーニングする電子写真装置において感光
体とクリーニング部材に接触する部位及びその近傍に対
して感光体支持体側から露光する機構を有することを特
徴とするものである。[Means for Solving the Problems (and Effects)] In order to solve the above-mentioned object, the present invention provides an electrophotographic apparatus that cleans a photoreceptor by bringing a cleaning member into contact with the photoreceptor, and a portion that contacts the photoreceptor and the cleaning member. It is characterized by having a mechanism for exposing the vicinity thereof from the photoreceptor support side.
この様にすることで、感光体上のクリーニング性が良く
なりブレードクリーニングで通常起きるようなブレード
めくれも殆ど生じない。By doing so, the cleaning performance on the photoreceptor is improved, and there is almost no occurrence of blade turning, which normally occurs in blade cleaning.
以下本発明の構成を説明する。The configuration of the present invention will be explained below.
本発明を適用し得る電子写真装置は感光体とクリーニン
グ部材が当接している部位及びその近傍に対して感光体
支持体側から露光する機構を有することが特徴である。An electrophotographic apparatus to which the present invention can be applied is characterized by having a mechanism that exposes a portion where a photoreceptor and a cleaning member are in contact with each other and the vicinity thereof from the photoreceptor support side.
第１図は本発明の電子写真装置の代表的な例である。FIG. 1 shows a typical example of the electrophotographic apparatus of the present invention.
紙面に垂直方向に延び矢印の方向に回転する円筒上の感
光体１の軸に平行にクリーニング機構２が近接配置して
ありこれに設置されたクリーニングブレード３の一部が
感光体１の表面に圧接されている。本発明の装置では、
クリーニングブレード３と感光体１とが当接する部位及
びその近傍において、感光体支持体側の面（背面）には
露光装置１１が設置されており、感光体１の背面から感
光体に対して露光できる機構となっている。A cleaning mechanism 2 is arranged close to and parallel to the axis of a cylindrical photoreceptor 1 extending perpendicular to the plane of the paper and rotating in the direction of the arrow, and a part of a cleaning blade 3 installed thereon touches the surface of the photoreceptor 1 It is pressed. In the device of the present invention,
In the area where the cleaning blade 3 and the photoreceptor 1 come into contact and in the vicinity thereof, an exposure device 11 is installed on the surface (back surface) on the side of the photoreceptor support, and can expose the photoreceptor from the back side of the photoreceptor 1. It is a mechanism.
転写部位１０において転写に寄与せずに感光体１の表面
に残留したトナーは感光体１の回転に伴ってクリーニン
グ機構に達すると、クリーニング機構２中のクリーニン
グブレード３によってクリニングされる。Toner remaining on the surface of the photoreceptor 1 without contributing to the transfer at the transfer site 10 reaches the cleaning mechanism as the photoreceptor 1 rotates, and is cleaned by the cleaning blade 3 in the cleaning mechanism 2.
本発明においては特にクリーニングブレード３と感光体
ｌとが当接する部分の感光体支持体側に露光機構が設置
されており、感光体１はクリーニングと同時に露光も受
ける。通常のクリーニング機構の場合には、クリーニン
グ中に感光体１上には残留電荷が存在しているが、本発
明のクリーニング機構を用いた場合には、クリーニング
中に感光体１が露光される結果として、感光体１上の残
留電荷が打ち消されて、トナーのクリーニング性を向上
させる結果となる。よって、感光体１の支持体側から感
光体ｌを背面露光するクリーニング機構を用いると感光
体１とクリーニング部材３の当接圧力が小さくても、十
分なクリーニングを行うことができるので、繰り返し画
像出し耐久使用を行っても、感光体の削れが少なくて済
む。In the present invention, in particular, an exposure mechanism is installed on the photoreceptor support side at a portion where the cleaning blade 3 and the photoreceptor 1 come into contact, so that the photoreceptor 1 is exposed to light at the same time as being cleaned. In the case of a normal cleaning mechanism, a residual charge exists on the photoconductor 1 during cleaning, but when the cleaning mechanism of the present invention is used, the photoconductor 1 is exposed to light during cleaning. As a result, the residual charge on the photoreceptor 1 is canceled out, resulting in improved toner cleaning performance. Therefore, if a cleaning mechanism is used that exposes the photoreceptor l from the support side of the photoreceptor 1 to the back side, sufficient cleaning can be performed even if the contact pressure between the photoreceptor 1 and the cleaning member 3 is small, so that repeated image formation is possible. Even after long-term use, there is less wear on the photoreceptor.
しかも、感光体支持体側に露光装置１１を設けているた
め、クリーニング機構内に露光装置を設ける場合と異な
り、繰り返しクリーニングによる露光装置へのトナーの
付着が殆どおこらない。Moreover, since the exposure device 11 is provided on the photoreceptor support side, unlike the case where the exposure device is provided within the cleaning mechanism, almost no toner adheres to the exposure device due to repeated cleaning.
よって、露光装置中の光源５は常に清浄な状態で露光を
行なうことができる。Therefore, the light source 5 in the exposure apparatus can always perform exposure in a clean state.
さらにクリーニングと同時に露光を行なうことから、前
露光を省略しても良く、或は通常の前露光よりも低い光
量でも十分である。Furthermore, since exposure is performed at the same time as cleaning, pre-exposure may be omitted, or a lower light intensity than normal pre-exposure is sufficient.
本発明で用いる感光体１の支持体の材質は、光透過型の
ガラス及び光透過型の樹脂などから選択できる。樹脂の
好ましい例とは、ＰＥＴ， ＰＶＤＦ，ポリアリレート
，ボリスルホン，ボリアミド，アクリル樹脂，エボキシ
樹脂，アクリロニトリル樹脂，メタクリル樹脂，塩化ビ
ニル樹脂，酢酸ビニル樹脂，ポリエステルアルキド樹脂
，ポリカーボネート，ポリウレタン，ボリスルホン樹脂
，ＡＢＳ樹脂，ポリ−４−メチル−１−ペンテン（単独
重合及び共重合体）或はこれらの樹脂の繰り返し単位の
うち２つ以上を含む共重合体からなる樹脂、例えばスチ
レンーブタジエンコボリマー樹脂，スチレンーアクリロ
ニトリルコボリマー樹脂，スチレンーマレイン酸コボリ
マー樹脂などを挙げることができる。The material of the support of the photoreceptor 1 used in the present invention can be selected from light-transmitting glass, light-transmitting resin, and the like. Preferred examples of the resin include PET, PVDF, polyarylate, borisulfone, polyamide, acrylic resin, epoxy resin, acrylonitrile resin, methacrylic resin, vinyl chloride resin, vinyl acetate resin, polyester alkyd resin, polycarbonate, polyurethane, borisulfone resin, and ABS. resin, poly-4-methyl-1-pentene (homopolymer and copolymer) or a resin consisting of a copolymer containing two or more repeating units of these resins, such as styrene-butadiene copolymer resin, styrene Examples include acrylonitrile copolymer resin, styrene-maleic acid copolymer resin, and the like.
支持体の形状としては円筒型ドラム状又はループエンド
レスシ一ト状のいずれでも良い。The shape of the support may be either a cylindrical drum shape or a loop endless sheet shape.
次に、支持体の感光層側に導電処理を行なう。Next, conductive treatment is performed on the photosensitive layer side of the support.
導電処理の方法としては金属又は導電物質の蒸着、スパ
ッタ、プラズマＣＶＤ又はメッキ等が挙げられる。好ま
しい金属又は導電物質の例とじては、Ａｌ， Ａｕ，
Ｃｕ， Ａｇ， Ｎｉ， Ｔｉ， Ｚｎ， Ｃｒ， Ｉ
ｎ， Ｓｎ， Ｐｂ， Ｆｅ等の金属又はこれらの合金
； ＩＴＯ，Ｓｎｏ２，アルマイト等の金属酸化物；又
はこれらの金属及び金属酸化物に塩素、ヨウ素等のハロ
ゲン元素をドープしたものなどを挙げることができる。Examples of the conductive treatment method include metal or conductive material vapor deposition, sputtering, plasma CVD, or plating. Examples of preferred metals or conductive materials include Al, Au,
Cu, Ag, Ni, Ti, Zn, Cr, I
Metals such as n, Sn, Pb, Fe, etc. or alloys thereof; Metal oxides such as ITO, Sno2, alumite, etc.; Or those in which these metals and metal oxides are doped with halogen elements such as chlorine, iodine, etc. I can do it.
また導電性ボリマーを支持体の感光層側にコーティング
する方法もある。Another method is to coat the photosensitive layer side of the support with a conductive polymer.
導電層は、表面抵抗が１０９Ω以下、好ましくは１０８
Ω以下になる様に成膜した。The conductive layer has a surface resistance of 109Ω or less, preferably 108Ω.
The film was formed to have a resistance of Ω or less.
本発明の電子写真装置におけるクリーニング機構に用い
るクリーニング部材としては、クリーニングブレード、
ベルト状クリーニング部材、ブラシ類などいずれでも採
用可能である。The cleaning member used in the cleaning mechanism in the electrophotographic apparatus of the present invention includes a cleaning blade,
Any belt-like cleaning member, brushes, etc. can be used.
クリーニング機構において、クリーニング部材３と感光
体１とが当接する部位の感光体支持体側面（背面）に設
置する露光装置の光源としては、そのスペクトルが、使
用する感光体の感度域に適合するもの、すなわち蛍光灯
、ハロゲンランプ、タングステンランプ、レーザー光、
ＬＥＤ．ＥＬなどから選択することができる。In the cleaning mechanism, the light source of the exposure device installed on the side surface (back surface) of the photoconductor support where the cleaning member 3 and photoconductor 1 come into contact is one whose spectrum matches the sensitivity range of the photoconductor used. , i.e. fluorescent lamps, halogen lamps, tungsten lamps, laser lights,
LED. You can select from EL, etc.
本発明においては、感光層は電荷発生層と電荷輸送層と
に機能的に分離した積層構造型でも、両機能が共存した
単一層型でも良い。In the present invention, the photosensitive layer may be of a laminated structure type in which a charge generation layer and a charge transport layer are functionally separated, or a single layer type in which both functions coexist.
積層構造型感光体を形成させる場合、電荷発生層はスー
ダンレッド、ダイアンプルーなどのアゾ顔料、ビレンキ
ノン、アントアントロンなどのキノン顔料、キノシアニ
ン顔料、ベリレン顔料、インジゴ、チオインジゴなどの
インジゴ顔料、アズレニウム塩顔料、銅フタロシアニン
などのフタロシアニン顔料などの電荷発生物質をポリビ
ニルブチラール、ボリスチレン、ポリ酢酸ビニル、アク
リル樹脂、ポリビニルビロリドン、エチルセルロース、
酢酸酩酸セルロースなどの結着剤樹脂に分散させて液状
とし、この分散液を前述の導電層の上に塗工することに
よって形成できる。このような、電荷発生層の膜厚は、
５μｍ以下、好ましくは０．０５〜２μｍである。When forming a laminated structure type photoreceptor, the charge generation layer may be an azo pigment such as Sudan Red or Diane Blue, a quinone pigment such as bilenequinone or anthantrone, a quinocyanine pigment, a berylene pigment, an indigo pigment such as indigo or thioindigo, or an azulenium salt pigment. , charge-generating materials such as phthalocyanine pigments such as copper phthalocyanine, polyvinyl butyral, polystyrene, polyvinyl acetate, acrylic resin, polyvinyl pyrrolidone, ethyl cellulose,
It can be formed by dispersing it in a binder resin such as cellulose acetate to form a liquid, and then coating this dispersion on the conductive layer described above. The thickness of such a charge generation layer is
It is 5 μm or less, preferably 0.05 to 2 μm.
電荷発生層の上に設ける電荷輸送層は、主鎖または側鎖
にビフエニレン、アントラセン、ビレン又はフェナント
レンなどの構造を有する多環芳香１１
族化合物；インドール、カルバゾール、オキサジアゾー
ル又はピラゾリンなどの含窒素複素環式化合物：ヒドラ
ゾン化合物又はスチリル化合物などの電荷輸送性物質を
必要に応じて成膜性を有する樹脂に溶解させてなる塗工
液を用いて形成させることができる。The charge transport layer provided on the charge generation layer is a polycyclic aromatic Group 11 compound having a structure such as biphenylene, anthracene, birene, or phenanthrene in the main chain or side chain; nitrogen-containing compound such as indole, carbazole, oxadiazole, or pyrazoline. Heterocyclic compound: It can be formed using a coating liquid prepared by dissolving a charge transporting substance such as a hydrazone compound or a styryl compound in a resin having film-forming properties, if necessary.
このような成膜性を有する樹脂としてはポリエステル、
ポリカーボネート、ポリメタクリル酸エステル又はボリ
スチレンなどが挙げられる。Examples of resins with such film-forming properties include polyester,
Examples include polycarbonate, polymethacrylic acid ester, and polystyrene.
電荷輸送層の膜厚は５〜４０μｍ、好ましくは１０〜３
０ＬＬｍである。The thickness of the charge transport layer is 5 to 40 μm, preferably 10 to 3 μm.
0LLm.
積層構造型感光体は電荷輸送層の上に電荷発生層が積層
された構造であってもよい。The laminated structure type photoreceptor may have a structure in which a charge generation layer is laminated on a charge transport layer.
また、単一層型感光体の場合は、前述のような電荷発生
物質と電荷輸送物質とを成膜性樹脂中に含有させて形成
させることができる。Further, in the case of a single-layer type photoreceptor, it can be formed by incorporating a charge generating substance and a charge transporting substance as described above into a film-forming resin.
本発明の電子写真装置では、ポリビニル力ルバゾール又
はポリビニルアントラセンなどの有機光導電性ボリマー
層、セレン蒸着層、セレンーテルル蒸着層又はアモルフ
ァスシリコン層なども感光１２
層に用いることができる。In the electrophotographic apparatus of the present invention, an organic photoconductive polymer layer such as polyvinyl rubberzole or polyvinylanthracene, a selenium evaporated layer, a selenium-tellurium evaporated layer, or an amorphous silicon layer can also be used as the photosensitive layer.
導電層と呼光層との中間に、バリャー機能と接着機能を
併せもつ下引層を設けることもできる。A subbing layer having both a barrier function and an adhesive function can also be provided between the conductive layer and the luminescent layer.
下引層は、例えばカゼイン、ポリビニルアルコール、ニ
トロセルロース、エチレンーアクリル酸コボリマー、ア
ルコール可溶性ボリアミド、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。The subbing layer is made of, for example, casein, polyvinyl alcohol, nitrocellulose, ethylene-acrylic acid copolymer, alcohol-soluble polyamide, polyurethane, gelatin,
It can be formed from aluminum oxide, etc.
下引層の膜厚は０．１〜５μｍ、好ましくは０．５〜３
μｍが適当である。The thickness of the subbing layer is 0.1 to 5 μm, preferably 0.5 to 3 μm.
μm is appropriate.
以下本発明を実施例に基いて述べるが、本発明は以下の
実施例に限定されるものではない。The present invention will be described below based on Examples, but the present invention is not limited to the following Examples.
実施例１
直径８０ｍｍの光透過性ガラスシリンダーにＡ１を蒸着
して支持体を作成した。Example 1 A support was prepared by vapor-depositing A1 onto a light-transmitting glass cylinder with a diameter of 80 mm.
次にチタニルオキソフタロシアニン顔料１０部（重量部
、以下同様）、ポリビニルブチラール（ブチラール化度
６８％、数平均分子量２０， ０００）１０部及びシク
ロヘキサノン５０部をポールミルで６時間混合分散する
ことによって塗工液を調製し、この塗工ｌ夜を上記支持
体の導電層上に乾燥膜厚が１．０７１ｍとなる様にワイ
ヤーバーで塗布して電荷発生層を形成させた。Next, 10 parts of titanyl oxophthalocyanine pigment (parts by weight, the same applies hereinafter), 10 parts of polyvinyl butyral (degree of butyralization 68%, number average molecular weight 20,000), and 50 parts of cyclohexanone were mixed and dispersed in a Pall mill for 6 hours to coat. A liquid was prepared, and this coating was applied onto the conductive layer of the support using a wire bar to a dry film thickness of 1.071 m to form a charge generation layer.
次に電荷輸送物質として下記式の構造
を有する電荷輸送物質７ｇとポリカーボネート樹脂（商
品名パンライトＫ − １３００帝人化成■製）７ｇと
をテトラヒド口フラン（ＴＨＦ）３５ｇとクロロベンゼ
ン３５ｇとの混合溶媒中に撹拌溶解させて得た溶液を先
の電荷発生層の上に、ワイヤーバーで乾燥膜厚が１６ミ
クロンとなる様に塗工して、２層構造からなる感光層を
もつ電子写真感光体１を製造した。この感光体を感光体
１とする。Next, 7 g of a charge transport material having the structure shown below as a charge transport material and 7 g of polycarbonate resin (trade name: Panlite K-1300 manufactured by Teijin Kasei ■) were mixed in a mixed solvent of 35 g of tetrahydrofuran (THF) and 35 g of chlorobenzene. The electrophotographic photoreceptor 1 having a photosensitive layer having a two-layer structure was prepared by applying the solution obtained by stirring and dissolving the solution onto the charge generation layer using a wire bar so that the dry film thickness was 16 microns. was manufactured. This photoreceptor will be referred to as photoreceptor 1.
この感光体ｌを第１図に示す電子写真装置に装着した。This photoreceptor 1 was mounted on an electrophotographic apparatus shown in FIG.
又第１図に示す電子写真装置において、感光体１内側の
露光装置１１としてはハロゲンランプ、クリーニング部
材支持体４にクリーニングブレード３を取り付けた。こ
の電子写真装置は−６ｋＶのコロナ放電により、感光体
１を帯電させた後に波長７ ８ ０ ｎｍの半導体レー
ザーにより像露光を行い、トナー現像、転写、クリーニ
ングと同時に露光及び前露光を行うものである。この装
置を用いて５万枚の連続画像出しテストを行った。In the electrophotographic apparatus shown in FIG. 1, a halogen lamp was used as an exposure device 11 inside the photoreceptor 1, and a cleaning blade 3 was attached to a cleaning member support 4. This electrophotographic apparatus charges the photoreceptor 1 with a -6 kV corona discharge, then performs image exposure using a semiconductor laser with a wavelength of 780 nm, and performs exposure and pre-exposure at the same time as toner development, transfer, and cleaning. be. A continuous image output test of 50,000 sheets was conducted using this device.
５万枚耐久使用後の画像状態及び感光体１の電荷輸送層
の膜厚を第１表に示す。Table 1 shows the image condition after 50,000 sheets of use and the thickness of the charge transport layer of photoreceptor 1.
実施例２
実施例１の感光体内部の露光装置１１をヒューズランプ
にした外には、実施例１と同様の電子写真装置及び同様
の感光体１を用いて実施例１と同様の画像出しテストを
行った。その結果を第１表に示す。Example 2 The same image output test as in Example 1 was carried out using the same electrophotographic device and the same photoreceptor 1 as in Example 1, except that the exposure device 11 inside the photoreceptor in Example 1 was replaced with a fuse lamp. I did it. The results are shown in Table 1.
実施例３
実施例１の電子写真装置のクリーニング機構をポリエス
テルの織物からなるベルト状部材を用いたクリーニング
機構に変えた（第３図に示す）。Example 3 The cleaning mechanism of the electrophotographic apparatus in Example 1 was changed to a cleaning mechanism using a belt-like member made of polyester fabric (as shown in FIG. 3).
１ ５
感光体内部の露光装置１１にはＬＥＤを用い、感光体と
しては実施例１と同様の感光体１を用いて、実施例１と
同様の画像出しテストを行った。1 5 An image output test similar to that in Example 1 was conducted using an LED for the exposure device 11 inside the photoreceptor and using the same photoreceptor 1 as in Example 1 as the photoreceptor.
その結果を第１表に示す。The results are shown in Table 1.
実施例４
直径８０ｍｍの光透過性ガラスシリンダーにＡ１を蒸着
して支持体を作成した。Example 4 A support was prepared by vapor-depositing A1 onto a light-transmitting glass cylinder with a diameter of 80 mm.
上記シリンダー表面に、カゼインのアンモニア水溶液（
カゼイン１１．２ｇｒ、２８％アンモニア水１ｇｒ、水
２２２ｍｊ２）をコーティング法で塗工、乾燥して塗工
ｍｉ．ｏ ｇｒ／ ｒｒｒの下引層を形成した。Ammonia aqueous solution of casein (
11.2g of casein, 1g of 28% ammonia water, 222mj2 of water) was applied using a coating method, dried and coated mi. A subbing layer of o gr/rrr was formed.
つぎに下の式
で示される電荷発生物質ｌＯ重量部、ブチラー１６
ル樹脂（商品名エスレックＢＭ−２ ：積水化学製）１
重量部とイソブロビルアルコール３０ＭＭ部をボールミ
ル分散機で４時間混合分散し、この分散液を前記下引層
の上に浸漬コーティング法で塗工し、乾燥して電荷発生
層を形成した。このときの膜厚は０．３μｍであった。Next, add 10 parts by weight of a charge generating substance expressed by the formula below, 16 parts by weight of butyral resin (trade name: S-LEC BM-2: manufactured by Sekisui Chemical), 1 part by weight.
Parts by weight and 30 MM parts of isobrobyl alcohol were mixed and dispersed in a ball mill disperser for 4 hours, and this dispersion was applied onto the undercoat layer by dip coating and dried to form a charge generating layer. The film thickness at this time was 0.3 μm.
つぎに下式
で示される電荷輸送物質ｌ重量部、ポリカーボネート樹
脂（商品名ユービロン二三菱化成製）１重量部とジクロ
ルメタン６重量部を混合し、撹拌機で撹拌後溶解した。Next, 1 part by weight of a charge transport substance represented by the following formula, 1 part by weight of a polycarbonate resin (trade name: Ubilon 2, manufactured by Mitsubishi Kasei), and 6 parts by weight of dichloromethane were mixed and dissolved after stirring with a stirrer.
この液を前記電荷発生層の上に浸漬コーティング法で塗
工、乾燥して電荷輸送層を形成した。このときの膜厚は
１７μｍであった。この感光体ドラムを感光体２とする
。This liquid was applied onto the charge generation layer by dip coating and dried to form a charge transport layer. The film thickness at this time was 17 μm. This photoreceptor drum is referred to as a photoreceptor 2.
実施例３の電子写真装置における感光体１内側の露光装
置１１を蛍光灯に変え、前記の感光体２を装着した。The exposure device 11 inside the photoreceptor 1 in the electrophotographic apparatus of Example 3 was replaced with a fluorescent lamp, and the photoreceptor 2 was mounted.
実施例１と同様に画像出しテストを行なった。An image output test was conducted in the same manner as in Example 1.
その結果を第１表に示す。The results are shown in Table 1.
実施例５
実施例１の電子写真装置のクリーニング機構をファーブ
ラシをクリーニング部材としたクリーニング機構に変え
た（第４図に示す）。感光体１内側の露光装置１１には
蛍光灯を用い、感光体としては実施例４と同様の感光体
２を用いて実施例１と同様の画像出しテストを行なった
。その結果を第１表に示す。Example 5 The cleaning mechanism of the electrophotographic apparatus of Example 1 was changed to a cleaning mechanism using a fur brush as a cleaning member (as shown in FIG. 4). An image output test similar to that in Example 1 was conducted using a fluorescent lamp for the exposure device 11 inside the photoreceptor 1 and using the same photoreceptor 2 as in Example 4 as the photoreceptor. The results are shown in Table 1.
実施例６
実施例５のクリーニング機構中のファーブラシ１３を磁
気ブラシとし、感光体１内例の露光装置１１をＥＬラン
プに変えた。この電子写真装置に感光体２を装着し、実
施例１と同様の方法で画像出しテストを行なった。その
結果を第１表に示す。Example 6 The fur brush 13 in the cleaning mechanism of Example 5 was changed to a magnetic brush, and the exposure device 11 inside the photoreceptor 1 was changed to an EL lamp. The photoreceptor 2 was installed in this electrophotographic apparatus, and an image output test was conducted in the same manner as in Example 1. The results are shown in Table 1.
比較例１
実施例工の電子写真装置を構成する感光体１内側の露光
装置ｌ１を用いない外は実施例】と同様の電子写真装置
Ｉこ惑光体１を装着し、実施例１と同様に画像出しテス
トを行なった。その結果を第１表に示す。Comparative Example 1 An electrophotographic apparatus similar to Example 1 except that the exposure device l1 inside the photoreceptor 1 constituting the electrophotographic apparatus of Example was not used. We conducted an image output test. The results are shown in Table 1.
比較例２
実施例３の電子写真装置を構成する感光体１内側の露光
装置１１を用いない外は実施例３と同様の電子写真装置
に感光体１を装着し、実施例１と同様に画像出しテスト
を行なった。その結果を第１表に示す。Comparative Example 2 The photoreceptor 1 was installed in the same electrophotographic apparatus as in Example 3, except that the exposure device 11 inside the photoreceptor 1 constituting the electrophotographic apparatus in Example 3 was not used, and the photoreceptor 1 was imaged in the same manner as in Example 1. I did a test run. The results are shown in Table 1.
比較例３
実施例１の電子写真装置を構成する感光体内側の露光装
置１ｌを感光体内部ではなくクリーニング機構内に設け
、クリーニングと同時に感光体表面を露光できるように
改造した。この電子写真装置に感光体１を装着し、実施
例１と同様に画像出しテストを行なった。結果を第１表
に示す。Comparative Example 3 The exposure device 1l inside the photoreceptor constituting the electrophotographic apparatus of Example 1 was provided not inside the photoreceptor but inside the cleaning mechanism, and modified so that the surface of the photoreceptor could be exposed to light at the same time as cleaning. The photoreceptor 1 was installed in this electrophotographic apparatus, and an image output test was conducted in the same manner as in Example 1. The results are shown in Table 1.
なお５万枚耐久テスト後にはクリーニング機構１９
中に設けたハロゲンランプはトナーなどで汚れて２Ｉ．
Ｏ
いた。Note that after the 50,000 sheet durability test, the halogen lamp installed in the cleaning mechanism 19 became dirty with toner, etc.
O was there.
［発明の効果］
本発明の電子写真装置はクリーニング部材と感光体とが
当接する部位及びその近傍に対して感光体支持体側から
露光する機構を有することによって弱いクリーニング条
件でも感光体のクリーニングを行うことができるので、
クリーニングブレードめくれも殆どなく、常に良好なク
リーニングを行うことができる。ブレードクリーニング
のみでなく、ベルト状部材やブラシなどのクリーニング
部材を用いた場合にも良好なクリーニングを継続して行
うことができる。[Effects of the Invention] The electrophotographic apparatus of the present invention cleans the photoreceptor even under weak cleaning conditions by having a mechanism that exposes the area where the cleaning member and the photoreceptor come into contact and the vicinity thereof from the photoreceptor support side. Because you can
There is almost no turning over of the cleaning blade, and good cleaning can be performed at all times. Good cleaning can be continuously performed not only by blade cleaning but also by using a cleaning member such as a belt-like member or a brush.
本発明の主効果を発現さぜるクリーニング機構を用いる
ことにより、クリーニングブレードのめくわやトナーの
すり抜けが殆ど起こらず、さらに感光体表面の摩耗及び
削れの少ない電子写真装置を提供することができた。By using a cleaning mechanism that exhibits the main effects of the present invention, it is possible to provide an electrophotographic apparatus in which the cleaning blade hardly gets stuck or toner slips through, and furthermore, the surface of the photoreceptor is less worn and scraped. Ta.
第ｌ図は本発明の電子写真装置の実施態様を示す模式的
断面図、第２（ａ）及び（ｂ）図は公知のクリーニング
装置の実施態様を示す側面図であり、第３図及び第４図
は本発明の電子写真装置の他の実施態様を示す模式的断
面図である。
１・・・感光体 ２・・・クリーニング機構
３・・・クリーニングブレード
３ａ・・・クリーニングブレード正常時当接エッジ３ｂ
・・・クリーニングブレード異常時当接エッジ４・・・
支持部材 ５・・・前露光６・・・一次帯電器
７・・・像露光８・・・現像器 ９
・・・給紙ローラー１０・・・転写帯電器 １１・
・・露光装置ｌ２・・・ベルト状クリーニング部材
１３・・・クリーニング用ブラシ。FIG. 1 is a schematic sectional view showing an embodiment of the electrophotographic apparatus of the present invention, FIGS. 2(a) and 2(b) are side views showing an embodiment of a known cleaning device, and FIGS. FIG. 4 is a schematic cross-sectional view showing another embodiment of the electrophotographic apparatus of the present invention. 1... Photoreceptor 2... Cleaning mechanism 3... Cleaning blade 3a... Cleaning blade normally abutting edge 3b
...Cleaning blade abutting edge 4 in case of abnormality...
Support member 5...Pre-exposure 6...Primary charger 7...Image exposure 8...Developer 9
...Paper feed roller 10...Transfer charger 11.
. . . Exposure device l2 . . . Belt-shaped cleaning member 13 . . . Cleaning brush.
Claims (1)
にクリーニング部材を接触させてクリーニングする機構
を有する電子写真装置において、該感光体の外表面とク
リーニング部材とが接触する部位およびその近傍に対し
て感光体支持体側から露光する機構を有することを特徴
とする電子写真装置。(1) In an electrophotographic apparatus having a mechanism for cleaning by bringing a cleaning member into contact with a photoreceptor composed of a photosensitive layer and a light-transmitting support, a portion where the outer surface of the photoreceptor contacts the cleaning member; An electrophotographic apparatus characterized by having a mechanism that exposes the vicinity of the photoreceptor from the side of the photoreceptor support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23285789A JPH0396980A (en) | 1989-09-11 | 1989-09-11 | Electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23285789A JPH0396980A (en) | 1989-09-11 | 1989-09-11 | Electrophotographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0396980A true JPH0396980A (en) | 1991-04-22 |
Family
ID=16945907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23285789A Pending JPH0396980A (en) | 1989-09-11 | 1989-09-11 | Electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0396980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007316134A (en) * | 2006-05-23 | 2007-12-06 | Fuji Xerox Co Ltd | Image forming apparatus, cleaning device and cleaning method |
| DE112019005593T5 (en) | 2018-11-09 | 2021-12-16 | Denso Corporation | OBJECT DETECTION DEVICE |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6064364A (en) * | 1983-09-19 | 1985-04-12 | Toshiba Corp | Method and device for image formation |
-
1989
- 1989-09-11 JP JP23285789A patent/JPH0396980A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6064364A (en) * | 1983-09-19 | 1985-04-12 | Toshiba Corp | Method and device for image formation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007316134A (en) * | 2006-05-23 | 2007-12-06 | Fuji Xerox Co Ltd | Image forming apparatus, cleaning device and cleaning method |
| DE112019005593T5 (en) | 2018-11-09 | 2021-12-16 | Denso Corporation | OBJECT DETECTION DEVICE |
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