JPH05297608A - Electrophotographic sensitive body and electrophotographic recorder - Google Patents
Electrophotographic sensitive body and electrophotographic recorderInfo
- Publication number
- JPH05297608A JPH05297608A JP19165691A JP19165691A JPH05297608A JP H05297608 A JPH05297608 A JP H05297608A JP 19165691 A JP19165691 A JP 19165691A JP 19165691 A JP19165691 A JP 19165691A JP H05297608 A JPH05297608 A JP H05297608A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- electrophotographic
- photosensitive
- photosensitive layer
- oxide
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真用感光体およ
びそれを用いた電子写真記録装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic photoreceptor and an electrophotographic recording apparatus using the same.
【０００２】[0002]
【従来の技術】近年、電子写真記録装置はその小型化が
強く望まれている。しかし、電子写真記録装置は、帯電
器、記録像光光源、現像器、転写器、イレーズ光光源お
よびクリーナがすべて感光ドラムの外周に設置されてい
る。従って、装置の小型化を図るため感光ドラムの直径
を８０ｍｍφ以下に小径化すると、感光ドラムの外周に
設置されている前記帯電器等のパーツの設置空間が減少
し、装置が複雑化すると云う問題があった。2. Description of the Related Art In recent years, there has been a strong demand for miniaturization of electrophotographic recording devices. However, in the electrophotographic recording apparatus, the charging device, the recording image light source, the developing device, the transfer device, the erase light source, and the cleaner are all installed on the outer periphery of the photosensitive drum. Therefore, if the diameter of the photosensitive drum is reduced to 80 mmφ or less in order to miniaturize the apparatus, the installation space for parts such as the charger installed on the outer periphery of the photosensitive drum is reduced, and the apparatus becomes complicated. was there.
【０００３】[0003]
【発明が解決しようとする課題】前記課題に対処するた
め、例えば、特開昭６２−２２０９６８号公報に示され
ているように、従来のアルミニウムや鉄等の金属製の導
電性基体を透明な導電性基体に変えて、感光体の基体内
に記録像光光源、イレーズ光光源を設置する方法が提案
されている。しかし、感光層が有機物で透明基体にも高
分子有機物を用いた場合はさほど問題とならないが、導
電処理を施した無機質透明基体、例えば、酸化インジウ
ムにスズをドープした薄膜（ＩＴＯ）が蒸着やスパッタ
リングにより形成されたガラス製ドラムの場合には、繰
返し使用されることによって該ドラムと感光層との熱膨
張係数の違いに基づく内部応力により、感光層に亀裂を
生じたり局部的な剥離等が生じ、これが感光体としての
寿命を短かくすると云う問題があった。In order to solve the above-mentioned problems, for example, as disclosed in JP-A-62-220968, a conventional conductive base made of metal such as aluminum or iron is made transparent. A method has been proposed in which a recording image light source and an erase light source are installed in the substrate of the photoconductor instead of the conductive substrate. However, when the photosensitive layer is an organic substance and a high molecular weight organic substance is also used for the transparent substrate, this is not a serious problem. In the case of a glass drum formed by sputtering, internal stress based on the difference in thermal expansion coefficient between the drum and the photosensitive layer due to repeated use may cause cracking or local peeling of the photosensitive layer. However, there is a problem that this shortens the life of the photoconductor.
【０００４】本発明の目的は、前記のような直径が８０
ｍｍφ以下の感光体に適した、繰り返し使用の寿命が優
れた透明な電子写真用感光体を提供することにある。The object of the present invention is to have a diameter of 80 as described above.
It is an object of the present invention to provide a transparent electrophotographic photosensitive member that is suitable for a photosensitive member having a diameter of mmφ or less and has a long life of repeated use.
【０００５】また、本発明の他の目的は、上記透明な感
光体を用いた電子写真記録装置を提供することにある。Another object of the present invention is to provide an electrophotographic recording apparatus using the above transparent photoconductor.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成する本発
明の要旨は次のとおりである。The gist of the present invention for achieving the above object is as follows.
【０００７】（１） 導電処理を行った透明基体からな
る導電性基体と、下引き層，電荷発生層，電荷搬送層を
有する感光層を備えた電子写真用感光体であり、前記感
光層の少なくとも電荷搬送層は超微粒子金属酸化物フイ
ラを含み、前記導電性基体と感光層との熱膨張係数の差
が１×１０~4／℃以下であることを特徴とする電子写真
用感光体。(1) An electrophotographic photosensitive member comprising a conductive substrate made of a transparent substrate which has been subjected to a conductive treatment, and a photosensitive layer having an undercoat layer, a charge generation layer and a charge transport layer, wherein At least the charge-transporting layer contains an ultrafine metal oxide filler, and the difference in thermal expansion coefficient between the conductive substrate and the photosensitive layer is 1 × 10 4 / ° C. or less, an electrophotographic photoreceptor.
【０００８】（２） 透明な基体により形成された感光
体とその内側に記録像光光源およびイレーズ光光源が設
けられており、感光体表面側に帯電、現像、転写、クリ
ーニングの各手段を備え、前記イレーズ光光源と転写手
段とが感光体の内外で対向して配置され、画像転写とイ
レーズを同時に行うことができるようにしたことを特徴
とする電子写真記録装置。(2) A photoconductor formed of a transparent substrate, a recording image light source and an erase light source are provided inside the photoconductor, and charging, developing, transfer and cleaning means are provided on the photoconductor surface side. An electrophotographic recording apparatus, wherein the erase light source and the transfer means are arranged to face each other inside and outside the photoconductor so that image transfer and erase can be performed at the same time.
【０００９】前記透明基体としては、透明なガラスや有
機高分子材料があるが、特に、ガラスの熱膨張係数は、
その上に形成される感光層のそれとは大きな差異があ
り、これが両者の密着性を低下させる原因となってい
る。そこで透明基体と感光層の熱膨張係数の差を小さく
するために、感光層の熱膨張係数を低くすることが考え
られる。その具体的手段として、該感光層に超微粒子の
金属酸化物フイラを添加することにより達成することが
できる。As the transparent substrate, there are transparent glass and organic polymer materials. In particular, the coefficient of thermal expansion of glass is
There is a big difference from that of the photosensitive layer formed thereon, and this is a cause of lowering the adhesion between them. Therefore, in order to reduce the difference in thermal expansion coefficient between the transparent substrate and the photosensitive layer, it is conceivable to reduce the thermal expansion coefficient of the photosensitive layer. As a specific means, it can be achieved by adding ultrafine metal oxide filler to the photosensitive layer.
【００１０】前記超微粒子の金属酸化物フイラとして
は、感光体の帯電性、遮光性を考慮する必要がある。そ
のためには、酸化アルミ、酸化ケイ素、酸化亜鉛、酸化
チタンが有効であり、これらの１種以上を用いることが
できる。該金属酸化物フイラの配合量は透明基体と感光
層との組合せによっても熱膨張係数の差が異なるが、前
記１×１０~4／℃以下となるよう金属酸化物フイラを配
合する。但し感光層に対して３０重量％以下、特に、２
５〜５重量％配合するのが望ましい。As the ultrafine metal oxide filler, it is necessary to consider the charging property and the light blocking property of the photoconductor. For that purpose, aluminum oxide, silicon oxide, zinc oxide, and titanium oxide are effective, and one or more of them can be used. Although the difference in the thermal expansion coefficient of the metal oxide filler varies depending on the combination of the transparent substrate and the photosensitive layer, the metal oxide filler is blended so as to be 1 × 10 4 / ° C. or less. However, 30% by weight or less based on the photosensitive layer, especially 2
It is desirable to add 5 to 5% by weight.
【００１１】前記透明基体上の感光層は、電子写真特
性、特に帯電性、暗減衰性を改善するため、下引き層を
透明基体上の導電層と感光層との間に設ける必要があ
る。該下引き層は酸化ケイ素などの無機物を使用するこ
ともできるが、電子写真特性が良好で、かつ、透明基体
との密着性が優れたものとして、ポリアミド樹脂−メラ
ミン樹脂が望ましい。The photosensitive layer on the transparent substrate is required to be provided with an undercoat layer between the conductive layer on the transparent substrate and the photosensitive layer in order to improve electrophotographic properties, particularly charging property and dark decay property. An inorganic material such as silicon oxide can be used for the undercoat layer, but a polyamide resin-melamine resin is preferable because it has good electrophotographic properties and excellent adhesion to a transparent substrate.
【００１２】前記透明基体への導電層の形成は、蒸着、
スパッタリング等によって行うことができるが、真空系
の製造装置を必要とする。これに対して、湿式塗布法は
特に真空系製造装置を必要とせず、面積の大きなもので
も比較的均一な膜を得ることができ、製造コストも前記
に比べて安い。The conductive layer is formed on the transparent substrate by vapor deposition,
Although it can be performed by sputtering or the like, it requires a vacuum-type manufacturing apparatus. On the other hand, the wet coating method does not particularly require a vacuum manufacturing apparatus, a relatively uniform film can be obtained even with a large area, and the manufacturing cost is lower than the above.
【００１３】なお、前記感光層の電荷発生物質として
は、例えば、金属フタロシアニン，無金属フタロシアニ
ン等のフタロシアニン顔料、アントラキノン顔料、イン
ジゴ顔料、キナクリドン顔料、ペリレン顔料、スクアリ
ン顔料、モノ，アゾおよびジスアゾ顔料、スクアリン酸
誘導体等の公知の材料を挙げることができ、これらの１
種以上を用いることができる。Examples of the charge generating substance of the photosensitive layer include phthalocyanine pigments such as metal phthalocyanine and metal-free phthalocyanine, anthraquinone pigments, indigo pigments, quinacridone pigments, perylene pigments, squalene pigments, mono-, azo- and disazo pigments, Known materials such as squaric acid derivatives may be mentioned.
More than one species can be used.
【００１４】また、電荷搬送物質としては、例えば、オ
キサゾール、オキサジアゾール、トリアゾール、イミダ
ゾロン、ピラゾリン、イミダゾール、イミダゾリジン、
ベンゾチアゾール、トリフェニルアミン、カルバゾー
ル、ヒドラゾン、スチリルおよびこれらの誘導体等を挙
げることができ、これらの１種以上を用いることができ
る。Examples of the charge carrier substance include oxazole, oxadiazole, triazole, imidazolone, pyrazoline, imidazole, imidazolidine,
Examples thereof include benzothiazole, triphenylamine, carbazole, hydrazone, styryl and derivatives thereof, and one or more of these can be used.
【００１５】前記電荷発生物質、電荷搬送物質の結着剤
樹脂としては、両物質の分散あるいは相溶性のよい樹脂
が用いられる。As the binder resin for the charge-generating substance and the charge-carrying substance, a resin having a good dispersion or compatibility with both substances is used.
【００１６】本発明の電子写真装置は前記感光体の外周
に帯電器、現像器、転写器、クリーナを設置するが、該
感光体の内側に記録像光およびイレーズ光の光源を設
け、内側から照射することが特徴である。その場合、前
記転写器とイレーズ光光源とは対向するように設置し、
転写とイレーズのプロセスを同時に行う。これにより、
正規現像の場合の転写効率を向上することができる。In the electrophotographic apparatus of the present invention, a charging device, a developing device, a transfer device and a cleaner are installed on the outer periphery of the photoconductor, and a light source for recording image light and erase light is provided on the inside of the photoconductor, and from the inside. It is characterized by irradiation. In that case, the transfer device and the erase light source are installed so as to face each other,
Perform the transfer and erase processes simultaneously. This allows
The transfer efficiency in the case of regular development can be improved.
【００１７】[0017]
【作用】本発明の感光体が、感光層の亀裂や剥離等が生
じない、密着性に優れたものが得られるのは、感光層、
特に電荷搬送層に超微粒子の金属酸化物フイラを配合
し、透明基体との熱膨張係数の差を１×１０~4／℃以下
としたことにあり、これにより両者の熱応力を緩和する
ことができたためである。The photosensitive material of the present invention has excellent adhesiveness without cracking or peeling of the photosensitive layer.
In particular, ultrafine metal oxide filler is blended in the charge transport layer so that the difference in coefficient of thermal expansion from that of the transparent substrate is set to 1 × 10 4 / ° C or less, thereby relaxing the thermal stress of both. Because it was possible.
【００１８】さらには、この透明基体からなる感光体を
用いることにより、記録像光およびイレーズ光を感光体
内側に設置することができ、転写とイレーズを同時に行
うことができる小型で高性能の電子写真装置を与えるこ
とができる。Furthermore, by using the photoconductor made of this transparent substrate, recording image light and erase light can be installed inside the photoconductor, and a compact and high-performance electron capable of performing transfer and erase at the same time. A photographic device can be provided.
【００１９】[0019]
【実施例】以下、本発明を実施例に基づき具体的に説明
する。EXAMPLES The present invention will be specifically described below based on examples.
【００２０】〔実施例 １〕感光層材料として、オクチ
ル酸インジウム ９重量部，ｐ−トルイル酸スズ１重量
部とを９０重量部の混合溶媒（トルエンとキシレンの１
対１混合）に溶解し、塗布液を調製した。これを内径６
０ｍｍφのガラス素管に浸漬法により塗布し、８０℃で
１０分間、３００℃で３０分間加熱乾燥を行って、ＩＴ
Ｏ処理した透明基体を作成した。Example 1 As a photosensitive layer material, 9 parts by weight of indium octylate and 1 part by weight of tin p-toluate were mixed with 90 parts by weight of a mixed solvent (1 part of toluene and xylene).
It was dissolved in (1 to 1 mixture) to prepare a coating solution. This is the inner diameter 6
It is applied to a 0 mmφ glass tube by the dipping method, and heat-dried at 80 ° C. for 10 minutes and 300 ° C. for 30 minutes to obtain IT.
An O-treated transparent substrate was prepared.
【００２１】次に下引き層材料として、ポリアミド樹脂
（商品名Ｍ−１２７６：日本リルサン社製）１重量部、
メラミン樹脂（商品名メラン２０００：日立化成工業社
製）１重量部とを１００重量部の混合溶媒(１,１,２−
トリクロロエタンとエタノールの３／２混合）に溶解し
塗布液を調製した。これを前記ＩＴＯ処理ガラス基体上
に浸漬法により塗布し、１２０℃で１時間乾燥し、膜厚
０.２μｍの下引き層を形成した。Next, as an undercoat layer material, 1 part by weight of a polyamide resin (trade name M-1276: manufactured by Nippon Rilsan Co., Ltd.),
1 part by weight of melamine resin (trade name: Melan 2000: manufactured by Hitachi Chemical Co., Ltd.) and 100 parts by weight of a mixed solvent (1,1,2-
A coating liquid was prepared by dissolving the mixture in trichloroethane and ethanol (3/2 mixture). This was applied onto the ITO-treated glass substrate by a dipping method and dried at 120 ° C. for 1 hour to form an undercoat layer having a film thickness of 0.2 μm.
【００２２】次に、感光層の電荷発生層材料として、τ
型無金属フタロシアニン（東洋インキ株式会社製）２.
５重量部をテトラヒドロフラン（和光純薬工業製）９５
重量部、シリコーン樹脂（信越化学製）２.５重量部と
共に超音波洗浄機を用いて８時間分散した。得られた分
散液を前記下引き層上に浸漬法により塗布し、１４０℃
で１時間乾燥して、膜厚０.３μｍの電荷発生層を形成
した。Next, as the charge generation layer material of the photosensitive layer, τ
Type metal-free phthalocyanine (manufactured by Toyo Ink Co., Ltd.) 2.
5 parts by weight of tetrahydrofuran (manufactured by Wako Pure Chemical Industries) 95
Parts by weight and 2.5 parts by weight of a silicone resin (manufactured by Shin-Etsu Chemical) were dispersed for 8 hours using an ultrasonic cleaner. The obtained dispersion is applied onto the undercoat layer by a dipping method, and the temperature is adjusted to 140 ° C.
And dried for 1 hour to form a charge generation layer having a thickness of 0.3 μm.
【００２３】次に、電荷搬送層材料として、１,１−ビ
ス（ｐ−ジエチルアミノフェニル）−１,３−ブタジエ
ン（ＰＢＤ）４重量部，ポリカーボネート樹脂（ＧＥ
製）１１重量部，シランカップリング剤（商品名ＫＰ−
３２３：信越化学工業）０.０２重量部を８５重量部の
混合溶媒（塩化メチレンと１，１，２−トリクロロエタ
ンの２／３混合）に、平均粒径０.０８μｍのＡｌ2Ｏ3
２.２重量部と共に溶解分散し、前記電荷発生層上に
浸漬塗布し、１２０℃で１時間乾燥して、膜厚２０μｍ
の電荷搬送層を形成した。該感光体の模式断面図を図１
に示す。Next, as the material for the charge carrier layer, 4 parts by weight of 1,1-bis (p-diethylaminophenyl) -1,3-butadiene (PBD) and polycarbonate resin (GE) were used.
11 parts by weight, silane coupling agent (trade name KP-
323: Shin-Etsu Chemical Co., Ltd.) 0.02 parts by weight in 85 parts by weight of a mixed solvent (2/3 mixture of methylene chloride and 1,1,2-trichloroethane) in Al 2 O 3 having an average particle size of 0.08 μm.
Dissolved and dispersed together with 2.2 parts by weight, applied on the charge generation layer by dip coating and dried at 120 ° C. for 1 hour to give a film thickness of 20 μm.
Was formed. A schematic cross-sectional view of the photoconductor is shown in FIG.
Shown in.
【００２４】前記感光体について、熱膨張係数を測定し
基体と感光層との熱膨張係数の差を求めたところ、４.
０×１０~5／℃であった。また、密着性を感光層のピー
ル強度を測定することにより評価した。感光層皮膜上に
１０ｍｍ幅の平行な切り込みを入れてレオメータ（不動
工業製、ＮＲＭ−３０１０Ｄ型）で垂直方向に５０ｍｍ
／分の速度で引剥がした際の強度を測定した。該引剥が
し強度は、２００ｇ／ｃｍであった。なお、当該感光体
を装着した電子写真装置により１０万枚の耐刷試験を行
ったところ、ガラス基体と感光層との間に剥離等は生じ
なかった。なお、該ガラス製感光体は透明性、耐熱製に
優れている。The coefficient of thermal expansion of the photoreceptor was measured and the difference in coefficient of thermal expansion between the substrate and the photosensitive layer was determined.
It was 0 × 10 to 5 / ° C. In addition, the adhesion was evaluated by measuring the peel strength of the photosensitive layer. Make a parallel cut with a width of 10 mm on the photosensitive layer film and vertically with a rheometer (NRM-3010D type manufactured by Fudo Kogyo) 50 mm
The strength when peeled off at a speed of / minute was measured. The peel strength was 200 g / cm. When a 100,000-sheet printing durability test was conducted using an electrophotographic apparatus equipped with the photoreceptor, no peeling or the like occurred between the glass substrate and the photosensitive layer. The glass photoreceptor is excellent in transparency and heat resistance.
【００２５】〔実施例 ２〕透明基体として熱可塑性透
明アクリル樹脂管を用い、この上に、ＩＴＯ蒸着膜から
なる透明導電層を形成した。これを、前記実施例１と同
様に下引き層、電荷発生層および電荷搬送層を順次塗布
した。但し、電荷搬送層には超微粒子の金属酸化物フイ
ラは配合していない。Example 2 A thermoplastic transparent acrylic resin tube was used as a transparent substrate, and a transparent conductive layer made of an ITO vapor deposition film was formed thereon. An undercoat layer, a charge generation layer, and a charge transport layer were sequentially applied to this in the same manner as in Example 1. However, no ultrafine metal oxide filler was added to the charge transport layer.
【００２６】該感光体の基体と感光層との熱膨張係数の
差は、２.０×１０~5／℃であった。また、ピール強度
は２３０ｇ／ｃｍであり、１０万枚の耐刷試験において
も基体と感光層との間に剥離は生じなかった。なお、熱
可塑性透明アクリル樹脂管を用いた感光体は軽量であ
り、落しても壊れにくゝ取扱い性に優れている。The difference in coefficient of thermal expansion between the substrate and the photosensitive layer of the photosensitive member was 2.0 × 10 5 / ° C. Further, the peel strength was 230 g / cm, and peeling did not occur between the substrate and the photosensitive layer even in the printing durability test of 100,000 sheets. The photosensitive member using the thermoplastic transparent acrylic resin tube is lightweight, and is resistant to breakage even if dropped and has excellent handleability.
【００２７】〔実施例 ３〕図２に示すような感光体ド
ラム１０と、該感光体ドラムの外周に帯電器１１、現像
器１３、転写器１４、クリーナ１６の順でこれらを設置
し、かつ、感光体内１０の内側に記録像光光源１２、イ
レーズ光光源１５を装着した電子写真装置を組立た。前
記において転写器１４とイレーズ光光源１５とを対向配
置し、転写とイレーズを同時に行なった際の転写効率に
ついて測定した。その結果、転写効率は８５％であっ
た。また、転写器１４とイレーズ光光源１５を対向配置
せず、転写とイレーズを同時に行なわない従来方式の転
写効率は、７０％であった。[Embodiment 3] A photosensitive drum 10 as shown in FIG. 2, and a charger 11, a developing device 13, a transfer device 14, and a cleaner 16 are installed in this order on the outer periphery of the photosensitive drum, and An electrophotographic apparatus in which a recording image light source 12 and an erase light source 15 were mounted inside the photoconductor 10 was assembled. In the above, the transfer device 14 and the erase light source 15 were arranged to face each other, and the transfer efficiency when the transfer and the erase were simultaneously performed was measured. As a result, the transfer efficiency was 85%. Further, the transfer efficiency of the conventional method in which the transfer device 14 and the erase light source 15 are not arranged so as to face each other and the transfer and the erase are not performed at the same time was 70%.
【００２８】〔比較例〕電荷搬送層にアルミナを配合し
ない以外は実施例１と同様にして感光体を作成した。Comparative Example A photoconductor was prepared in the same manner as in Example 1 except that alumina was not added to the charge carrier layer.
【００２９】この感光体の基体と感光層との熱膨張係数
の差は、１.５×１０~4／℃であった。また、ピール強
度は１００ｇ／ｃｍであり、１０万枚の耐刷試験では、
基体と感光層との間に剥離が生じた。The difference in coefficient of thermal expansion between the substrate and the photosensitive layer of this photoreceptor was 1.5 × 10 4 / ° C. Moreover, the peel strength is 100 g / cm, and in the printing durability test of 100,000 sheets,
Peeling occurred between the substrate and the photosensitive layer.
【００３０】[0030]
【発明の効果】本発明は、導電性透明基体と感光層との
熱膨張係数の差を１×１０~4／℃以下としたことによ
り、両者の密着性の高い電子写真用感光体が得られる。
また、透明基体からなる感光体は、記録像光およびイレ
ーズ光の光源を基体内側に設けることができるので、装
置の高性能化、小型化が実現できる。INDUSTRIAL APPLICABILITY The present invention provides an electrophotographic photosensitive member having high adhesion between the conductive transparent substrate and the photosensitive layer, by setting the difference in thermal expansion coefficient between 1 × 10 4 / ° C. or less. To be
Further, since the light source for recording image light and erase light can be provided inside the substrate, the photosensitive member made of the transparent substrate can realize high performance and downsizing of the apparatus.
【図１】本発明の一実施例の電子写真用感光体の模式断
面図である。FIG. 1 is a schematic cross-sectional view of an electrophotographic photosensitive member according to an embodiment of the present invention.
【図２】本発明の一実施例の電子写真記録装置の感光体
とそれに付属する部品の模式配置図である。FIG. 2 is a schematic layout diagram of a photoconductor of an electrophotographic recording apparatus according to an exemplary embodiment of the present invention and components attached thereto.
１…透明基体、２…透明導電層、３…下引き層、４…電
荷発生層、５…電荷搬送層、１０…感光体ドラム、１１
…帯電器、１２…記録像光光源、１３…現像器、１４…
転写器、１５…イレーズ光光源、１６…クリーナ。DESCRIPTION OF SYMBOLS 1 ... Transparent substrate, 2 ... Transparent conductive layer, 3 ... Undercoat layer, 4 ... Charge generating layer, 5 ... Charge carrying layer, 10 ... Photosensitive drum, 11
... charger, 12 ... recording image light source, 13 ... developing device, 14 ...
Transfer device, 15 ... Erase light source, 16 ... Cleaner.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川西 恒明 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuneaki Kawanishi 4026 Kujimachi, Hitachi City, Ibaraki Prefecture Hitachi Research Laboratory, Hitachi, Ltd.
Claims (9)
基体と、下引き層，電荷発生層，電荷搬送層を有する感
光層を備えた電子写真用感光体であり、前記感光層の少
なくとも電荷搬送層は超微粒子金属酸化物フイラを含
み、前記導電性基体と感光層との熱膨張係数の差が１×
１０~4／℃以下であることを特徴とする電子写真用感光
体。1. An electrophotographic photoreceptor comprising a conductive substrate made of a transparent substrate that has been subjected to a conductive treatment and a photosensitive layer having an undercoat layer, a charge generation layer and a charge transport layer, and at least the photosensitive layer. The charge transport layer contains ultrafine metal oxide filler, and the difference in coefficient of thermal expansion between the conductive substrate and the photosensitive layer is 1 ×.
An electrophotographic photoconductor characterized by having a temperature of 10 to 4 ° C. or less.
アルミ、酸化ケイ素、酸化亜鉛、酸化チタンの１種以上
が前記感光層の少なくとも電荷搬送層に３０重量％以下
配合されていることを特徴とする請求項１に記載の電子
写真用感光体。2. The ultrafine metal oxide filler contains at least 30% by weight of aluminum oxide, silicon oxide, zinc oxide, titanium oxide in at least the charge transport layer of the photosensitive layer. The electrophotographic photoreceptor according to claim 1, which is characterized in that.
基体と、下引き層，電荷発生層，電荷搬送層を有する感
光層を備えた電子写真用感光体であり、前記感光層の少
なくとも電荷搬送層に酸化アルミ、酸化ケイ素、酸化亜
鉛、酸化チタンから選ばれる超微粒子金属酸化物フイラ
の１種以上を２５〜５重量％含むことを特徴とする電子
写真用感光体。3. An electrophotographic photoreceptor comprising a conductive substrate made of a transparent substrate that has been subjected to a conductive treatment and a photosensitive layer having an undercoat layer, a charge generation layer and a charge transport layer, at least the photosensitive layer. An electrophotographic photoreceptor, wherein the charge transport layer contains 25 to 5% by weight of one or more ultrafine metal oxide fillers selected from aluminum oxide, silicon oxide, zinc oxide and titanium oxide.
ことを特徴とする請求項１，２または３に記載の電子写
真用感光体。4. The electrophotographic photoconductor according to claim 1, wherein the transparent substrate is a glass tube.
メラミン樹脂とからなる皮膜であることを特徴とする請
求項１，２または３に記載の電子写真用感光体。5. The electrophotographic photoconductor according to claim 1, wherein the undercoat layer of the photoconductor is a film made of a polyamide resin and a melamine resin.
ンジウム−スズ透明導電層からなるることを特徴とする
請求項１，２または３に記載の電子写真用感光体。6. The electrophotographic photoreceptor according to claim 1, wherein the conductive layer of the transparent substrate is a transparent indium-tin conductive layer formed by wet coating.
内側に記録像光光源およびイレーズ光光源が設けられて
おり、感光体表面側に帯電、現像、転写、クリーニング
の各手段を備え、前記イレーズ光光源と転写手段とが感
光体の内外で対向して配置され、画像転写とイレーズを
同時に行うことができるようにしたことを特徴とする電
子写真記録装置。7. A photosensitive member formed of a transparent substrate, a recording image light source and an erase light source are provided inside the photosensitive member, and each charging, developing, transferring, and cleaning means is provided on the surface of the photosensitive member. An electrophotographic recording apparatus, wherein the erase light source and the transfer means are arranged inside and outside the photoconductor so as to face each other so that image transfer and erase can be performed at the same time.
くとも電荷搬送層が、酸化アルミ、酸化ケイ素、酸化亜
鉛、酸化チタンから選ばれる超微粒子金属酸化物フイラ
を３０重量％以下含み、前記感光体と感光層との熱膨張
係数の差が１×１０~4／℃以下であることを特徴とする
請求項７に記載の電子写真記録装置。8. A photosensitive layer provided on the surface of the photoconductor, wherein at least a charge-transporting layer contains 30% by weight or less of an ultrafine metal oxide filler selected from aluminum oxide, silicon oxide, zinc oxide, and titanium oxide. 8. The electrophotographic recording apparatus according to claim 7, wherein the difference in thermal expansion coefficient between the photoconductor and the photosensitive layer is 1 × 10 4 / ° C. or less.
くとも電荷搬送層が、酸化アルミ、酸化ケイ素、酸化亜
鉛、酸化チタンから選ばれる超微粒子金属酸化物フイラ
の１種以上を２５〜５重量％含むことを特徴とする請求
項７に記載の電子写真記録装置。9. A photosensitive layer provided on the surface of the photosensitive member, wherein at least a charge-transporting layer comprises 25 to 5 of at least one ultrafine metal oxide filler selected from aluminum oxide, silicon oxide, zinc oxide and titanium oxide. The electrophotographic recording apparatus according to claim 7, wherein the electrophotographic recording apparatus comprises a weight percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19165691A JPH05297608A (en) | 1991-07-31 | 1991-07-31 | Electrophotographic sensitive body and electrophotographic recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19165691A JPH05297608A (en) | 1991-07-31 | 1991-07-31 | Electrophotographic sensitive body and electrophotographic recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05297608A true JPH05297608A (en) | 1993-11-12 |
Family
ID=16278282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19165691A Withdrawn JPH05297608A (en) | 1991-07-31 | 1991-07-31 | Electrophotographic sensitive body and electrophotographic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05297608A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1211565A1 (en) * | 2000-11-30 | 2002-06-05 | Ricoh Company, Ltd. | Electrophotographic photoconductor, method of manufacturing same and image forming method, image forming apparatus and process cartridge using same |
| KR100458872B1 (en) * | 1995-09-28 | 2005-04-06 | 후지 덴끼 가부시키가이샤 | Electrophotographic photoreceptor |
| KR100467989B1 (en) * | 1996-08-26 | 2005-12-21 | 후지 덴키 가부시끼가이샤 | Photoconductor for Internal Irradiation Electrophotography |
-
1991
- 1991-07-31 JP JP19165691A patent/JPH05297608A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100458872B1 (en) * | 1995-09-28 | 2005-04-06 | 후지 덴끼 가부시키가이샤 | Electrophotographic photoreceptor |
| KR100467989B1 (en) * | 1996-08-26 | 2005-12-21 | 후지 덴키 가부시끼가이샤 | Photoconductor for Internal Irradiation Electrophotography |
| EP1211565A1 (en) * | 2000-11-30 | 2002-06-05 | Ricoh Company, Ltd. | Electrophotographic photoconductor, method of manufacturing same and image forming method, image forming apparatus and process cartridge using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981008 |