JP3215451B2 - Electrophotographic image forming method - Google Patents
Electrophotographic image forming methodInfo
- Publication number
- JP3215451B2 JP3215451B2 JP10768091A JP10768091A JP3215451B2 JP 3215451 B2 JP3215451 B2 JP 3215451B2 JP 10768091 A JP10768091 A JP 10768091A JP 10768091 A JP10768091 A JP 10768091A JP 3215451 B2 JP3215451 B2 JP 3215451B2
- Authority
- JP
- Japan
- Prior art keywords
- photoconductive layer
- electrophotographic photosensitive
- electrophotographic
- photosensitive member
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Photoreceptors In Electrophotography (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光導電体により光導電
層が形成されてなる電子写真感光体に関するものであ
り、更に詳しくは帯電装置により帯電を行い、露光によ
り潜像を形成して、平版印刷版あるいは静電印刷等等を
行う電子写真装置に用いる電子写真感光体に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic photoreceptor having a photoconductive layer formed of a photoconductive material. More specifically, the present invention relates to an electrophotographic photoreceptor which is charged by a charging device and forms a latent image by exposure. The present invention relates to an electrophotographic photosensitive member used in an electrophotographic apparatus for performing lithographic printing plate or electrostatic printing or the like.
【０００２】[0002]
【従来の技術】現在、殆どの電子写真装置に使用されて
いる帯電装置は、コロナ放電器を用いた帯電装置であ
り、より具体的にはコロナ放電器に制御用のグリッドを
設けた構造を持つスコロトロン帯電装置と呼ばれる帯電
装置である。コロナ放電器を用いた帯電装置を実現する
ためだけの目的には、制御用のグリッドは不要であり、
制御用のグリッドを持たないコロトロン帯電装置では、
帯電速度は速いが帯電の均一性が不充分であるという欠
点がある。スコロトロン帯電装置は、制御用グリッドを
設けることによってこの点を改善しており、一般の電子
写真感光体に対して、容易に均一な帯電を与えることが
可能である。2. Description of the Related Art At present, a charging device used in most electrophotographic devices is a charging device using a corona discharger, and more specifically, a structure in which a control grid is provided in the corona discharger. This is a charging device called a scorotron charging device. A grid for control is not necessary for the purpose only to realize a charging device using a corona discharger,
In a corotron charger without a control grid,
The charging speed is high, but the uniformity of charging is insufficient. The scorotron charging device improves this point by providing a control grid, and can easily and uniformly charge a general electrophotographic photosensitive member.
【０００３】しかし、スコロトロン帯電装置は制御用グ
リッドを必要とするため、構造が複雑で帯電制御用の電
源を必要とし、また制御用グリッドの影響によって帯電
効率が低下するため、帯電速度が不充分であるという問
題がある。However, since the scorotron charging device requires a control grid, the structure is complicated and a power supply for charging control is required, and the charging efficiency is reduced due to the influence of the control grid. There is a problem that is.
【０００４】[0004]
【発明が解決しようとする課題】そこで本発明は、上述
の従来の問題に鑑みて発明されたものであって、その目
的とするところは、帯電装置の種類に影響されず、高速
に、常に均一に帯電されることを特徴とする電子写真装
置の電子写真感光体を提供するところにある。SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has as its object to always operate at high speed without being affected by the type of charging device. An object of the present invention is to provide an electrophotographic photosensitive member of an electrophotographic apparatus, which is uniformly charged.
【０００５】[0005]
【課題を解決するための手段】本発明は、帯電装置の種
類に影響を受けずに常に均一に帯電されることを可能と
するような電子写真装置の電子写真感光体に関するもの
であり、より詳しくは、導電性支持体上に第１の光導電
体層を形成してなる電子写真感光層上に、第１の光導電
層を露光する波長域とは異なった波長域の光に対して光
吸収を示すような第２の光導電層を積層して形成される
ことを特徴とする電子写真装置の電子写真感光体に関す
るものである。SUMMARY OF THE INVENTION The present invention relates to an electrophotographic photoreceptor for an electrophotographic apparatus, which can always be uniformly charged without being affected by the type of charging device. Specifically, on the electrophotographic photosensitive layer formed by forming the first photoconductor layer on the conductive support, light of a wavelength range different from the wavelength range for exposing the first photoconductive layer is applied. The present invention relates to an electrophotographic photosensitive member of an electrophotographic apparatus, which is formed by laminating a second photoconductive layer exhibiting light absorption.
【０００６】図１に示される本発明の電子写真感光体１
は、導電性基体２上に第１の光導電層３を形成してなる
電子写真感光層４上に、この電子写真感光層４を露光す
る光の波長とは異なった波長域の光に対して光吸収を示
すような第２の光導電層５を形成してなるものである。
このように形成される電子写真感光体１に、第２の光導
電層５の吸収する波長域の光を照射すると同時に、帯電
装置により帯電を行い、その後露光により画像情報に準
じた静電潜像を形成し、この静電潜像にしたがってトナ
ーを吸着させ形成するようにし、電子写真を構成できる
ものである。The electrophotographic photoreceptor 1 of the present invention shown in FIG.
Is provided on an electrophotographic photosensitive layer 4 in which a first photoconductive layer 3 is formed on a conductive substrate 2 with respect to light in a wavelength range different from the wavelength of light for exposing the electrophotographic photosensitive layer 4. The second photoconductive layer 5 is formed so as to exhibit light absorption.
The electrophotographic photoreceptor 1 thus formed is irradiated with light in the wavelength range absorbed by the second photoconductive layer 5 and, at the same time, charged by a charging device, and then exposed to an electrostatic latent image according to image information. An image is formed, and toner is adsorbed and formed in accordance with the electrostatic latent image to form an electrophotograph.
【０００７】上述の、本発明においては、帯電を行う際
に第２の光導電層５の吸収する光が照射されているた
め、上記第２の光導電層５は導電性になり、キャリアが
層内を移動し、その結果帯電電圧が平均化され、帯電装
置の種類にかかわらず均一な帯電が行われる。In the present invention, since the light absorbed by the second photoconductive layer 5 is irradiated during charging, the second photoconductive layer 5 becomes conductive and the carrier is The layer moves in the layer, and as a result, the charging voltage is averaged, and uniform charging is performed regardless of the type of the charging device.
【０００８】[0008]
【作用】以上述べたように、導電性支持体上に第１の光
導電体層を形成してなる電子写真感光層上に、第１の光
導電層を露光する波長域とは異なった波長域の光に対し
て光吸収を示すような第２の光導電層を積層して形成さ
れることを特徴とする電子写真感光体に対し、第２の光
導電層の吸収する波長域の光を照射すると同時に帯電装
置により帯電を行うことにより、帯電装置の種類に影響
されることなく、上記電子写真感光体に常に均一な帯電
がなされる。As described above, a wavelength different from the wavelength range in which the first photoconductive layer is exposed is formed on the electrophotographic photosensitive layer having the first photoconductive layer formed on the conductive support. The second photoconductive layer is formed by laminating a second photoconductive layer that absorbs light in the region of light, and the light of the wavelength range absorbed by the second photoconductive layer is applied to the electrophotographic photosensitive member. And the charging by the charging device at the same time, the electrophotographic photosensitive member is always uniformly charged without being affected by the type of the charging device.
【０００９】また、本発明においては、第２の光導電層
中をキャリアが移動し、その結果帯電電圧が平均化さ
れ、帯電装置の種類にかかわらず均一な帯電が行われる
ことを特徴としており、このことはカールソン法を用い
る電子写真感光体のみではなく、例えば容量像法を用い
る電子写真感光体としても同様に作用する。Further, the present invention is characterized in that carriers move in the second photoconductive layer, so that the charging voltage is averaged, and uniform charging is performed regardless of the type of charging device. This applies not only to an electrophotographic photosensitive member using the Carlson method but also to an electrophotographic photosensitive member using, for example, a capacitance image method.
【００１０】[0010]
【実施例】以下、本発明を適用した電子写真感光体の実
施例について説明する。 （実施例１）ＩＴＯを蒸着した厚さ１００μｍのポリエ
チレンテレフタレートフィルムを導電性支持体として用
い、この上に第１の光導電層として次の塗料を厚さ６μ
ｍになるように塗布し、電子写真感光層を得た。EXAMPLES Examples of the electrophotographic photosensitive member to which the present invention is applied will be described below. Example 1 A 100 μm-thick polyethylene terephthalate film on which ITO was deposited was used as a conductive support, and the following coating was applied thereon as a first photoconductive layer to a thickness of 6 μm.
m to obtain an electrophotographic photosensitive layer.
【００１１】 酸化亜鉛 １０ｇ ε−銅フタロシアニン ２ｇ 無水フタル酸 １ｇ アクリル樹脂 １０ｇ トルエン ４０ｇ 次いで、この電子写真感光層の上に第２の光導電層とし
て、次の塗料を厚さ１μｍになるように塗布し、電子写
真感光体を得た。Zinc oxide 10 g ε-copper phthalocyanine 2 g Phthalic anhydride 1 g Acrylic resin 10 g Toluene 40 g Next, the following coating material is applied on the electrophotographic photosensitive layer as a second photoconductive layer to a thickness of 1 μm. Thus, an electrophotographic photosensitive member was obtained.
【００１２】 ポリ−Ｎ−ビニルカルバゾール １０ｇ ポリカーボネート樹脂 ２ｇ ジクロルメタン ８ｇ トルエン ８０ｇ ピリリウム塩色素（下記構造式） ０．００４ｇPoly-N-vinylcarbazole 10 g Polycarbonate resin 2 g Dichloromethane 8 g Toluene 80 g Pyrilium salt dye (the following structural formula) 0.004 g
【００１３】[0013]
【化１】 Embedded image
【００１４】得られた電子写真感光体に、上記式に示さ
れるピリリウム塩色素の吸収する５００ｎｍ付近の青色
光を照射しながらコロトロン帯電装置を用いて２００ｍ
ｍ／ｓｅｃの帯電速度で帯電を行い、黒色の湿式トナー
により現像を行ったところ、全面にわたり非常に均一な
黒色を得ることができた。次いで、帯電の後に第一の第
１の光導電層の感応する近赤外光を均一照射し、黒色の
湿式トナーによる現像を行ったところ、全面に非常に均
一な中間濃度が得られた。While irradiating the obtained electrophotographic photosensitive member with blue light of about 500 nm which the pyrylium salt dye represented by the above formula absorbs, 200 m using a corotron charger.
When charging was performed at a charging speed of m / sec and development was performed with a black wet toner, a very uniform black color could be obtained over the entire surface. Next, after charging, the first first photoconductive layer was uniformly irradiated with near-infrared light sensitive thereto and developed with a black wet toner. As a result, a very uniform intermediate density was obtained over the entire surface.
【００１５】また、電子写真感光体の感度、暗減衰特性
等の電子写真特性に関しては、特に悪影響は認められな
かった。比較のために、第１の光導電層だけを形成した
電子写真感光体を作製し、同様に帯電、現像を行ったと
ころ、面の各部においてある部分は充分な黒色である
が、ある部分はほとんど濃度がないといったように、非
常に不均一な結果であった。No particular adverse effect was observed on the electrophotographic characteristics of the electrophotographic photosensitive member, such as sensitivity and dark decay characteristics. For comparison, an electrophotographic photosensitive member having only the first photoconductive layer formed thereon was subjected to charging and development in the same manner. As a result, some portions of the surface were sufficiently black, but some portions were black. Very uneven results, such as little concentration.
【００１６】また、帯電後、均一露光を行い、現像を行
ったところ、面の各部において非常に不均一な濃度しか
得られず、電子写真画像形成に耐えうるものではなかっ
た。 （実施例２）図２に示すように、厚さ７５μｍのポリエ
チレンテレフタレートフィルム１１に５μｍのアルミニ
ウム箔１２をラミネートした導電性支持体１３を用い、
この上に第１の光導電層１４として次の塗料を厚さ８μ
ｍになるように塗布した。Further, after charging, uniform exposure and development were performed. As a result, only a very nonuniform density was obtained at each part of the surface, and it was not enough to withstand electrophotographic image formation. (Example 2) As shown in FIG. 2, a conductive support 13 in which a 5 μm aluminum foil 12 was laminated on a 75 μm thick polyethylene terephthalate film 11 was used.
On this, the following coating material having a thickness of 8 μm was formed as the first photoconductive layer 14.
m.
【００１７】 硫化カドミウム ３ｇ スチレン−アクリル樹脂 １７ｇ 酢酸セルソルブ ４０ｇ メチルエチルケトン ４０ｇ さらに、この光導電層１４上に、厚さ１μｍのポリエチ
レンテレフタレートフィルム１５をはりつけ、容量像法
に用いることが可能な電子写真感光層を得た。Cadmium sulfide 3 g Styrene-acrylic resin 17 g Cellsolve acetate 40 g Methyl ethyl ketone 40 g Further, a 1 μm-thick polyethylene terephthalate film 15 is attached on the photoconductive layer 14, and an electrophotographic photosensitive layer that can be used for a capacitance image method I got
【００１８】次いで、この電子写真感光層の上に第２の
光導電層１６として、次の塗料を厚さ１μｍになるよう
に塗布し、電子写真感光体１７を得た。 ポリ−Ｎ−ビニルカルバゾール １０ｇ ポリカーボネート樹脂 ２ｇ ジクロルメタン ８ｇ トルエン ８０ｇ ヘプタメチンシアニン色素（下記構造式）０．００１ｇNext, the following coating material was applied on the electrophotographic photosensitive layer as the second photoconductive layer 16 so as to have a thickness of 1 μm to obtain an electrophotographic photosensitive member 17. Poly-N-vinylcarbazole 10 g Polycarbonate resin 2 g Dichloromethane 8 g Toluene 80 g Heptamethine cyanine dye (the following structural formula) 0.001 g
【００１９】[0019]
【化２】 Embedded image
【００２０】得られた電子写真感光体に、上記式に示さ
れるヘプタメチンシアニン色素の吸収する７６０ｎｍ〜
７８０ｎｍ付近の近赤外光と硫化カドミウムの感応する
緑色光を同時に照射しながらコロトロン帯電装置を用い
て１５０ｍｍ／ｓｅｃの帯電速度で帯電を行った。次に
緑色の均一な像露光を行いながらはじめの帯電とは逆極
性の帯電を行い、さらに緑色光で全面露光を行った後、
黒色の湿式トナーにより現像を行ったところ、全面に非
常に均一な中間濃度が得られた。The obtained electrophotographic photoreceptor has a heptamethine cyanine dye represented by the above formula which absorbs 760 nm
Charging was performed at a charging speed of 150 mm / sec using a corotron charger while simultaneously irradiating near-infrared light near 780 nm and green light sensitive to cadmium sulfide. Next, while performing the uniform image exposure of green, the charge of the polarity opposite to the initial charge is performed, and after performing the entire surface exposure with green light,
When development was performed with a black wet toner, a very uniform intermediate density was obtained over the entire surface.
【００２１】比較のために、第１の光導電層１４とポリ
エチレンテレフタレートフィルム１５による電子写真感
光層のみによる電子写真感光体を作製し、同様に帯電、
像露光、全面露光、現像を行ったところ、面の各部にお
いて非常に不均一な濃度しか得られず、電子写真画像形
成に耐えうるものではなかった。For comparison, an electrophotographic photosensitive member comprising only an electrophotographic photosensitive layer composed of the first photoconductive layer 14 and the polyethylene terephthalate film 15 was prepared, and similarly charged,
When image exposure, overall exposure, and development were performed, only very uneven density was obtained in each part of the surface, and it was not enough to withstand electrophotographic image formation.
【００２２】[0022]
【発明の効果】上述の説明からも明らかなように、導電
性支持体上に第１の光導電体層を形成してなる電子写真
感光層上に、第１の光導電層を露光する波長域とは異な
った波長域の光に対して光吸収を示すような第２の光導
電層を積層して形成されることを特徴とする電子写真感
光体に対し、第２の光導電層の吸収する波長域の光を作
用させると同時に帯電を行うことにより、帯電装置の種
類による影響を受けずに、高速に均一な帯電がなされる
ような電子写真装置の電子写真感光体を作製することが
できる。As is apparent from the above description, the wavelength at which the first photoconductive layer is exposed on the electrophotographic photosensitive layer obtained by forming the first photoconductive layer on the conductive support. A second photoconductive layer, which is formed by laminating a second photoconductive layer that absorbs light in a wavelength range different from that of the second photoconductive layer. To produce an electrophotographic photoreceptor of an electrophotographic apparatus in which uniform charging is performed at a high speed without being affected by the type of a charging device by performing charging at the same time as applying light in a wavelength range to be absorbed. Can be.
【図１】本発明の電子写真感光体の断面を示す模式断面
図である。FIG. 1 is a schematic cross-sectional view showing a cross section of an electrophotographic photosensitive member of the present invention.
【図２】本発明の他の実施例の電子写真感光体の断面を
示す模式断面図である。FIG. 2 is a schematic cross-sectional view illustrating a cross section of an electrophotographic photosensitive member according to another embodiment of the present invention.
１、１７ 電子写真感光体 ２、１３ 導電性基体 ３、１４ 第１の光導電層 ４ 電子写真感光層 ５、１６ 第２の光導電層 １１、１５ ポリエチレンテレフタレートフィルム １２ アルミニウム箔 Reference Signs List 1,17 Electrophotographic photoreceptor 2,13 Conductive substrate 3,14 First photoconductive layer 4 Electrophotographic photosensitive layer 5,16 Second photoconductive layer 11,15 Polyethylene terephthalate film 12 Aluminum foil
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭49−53051（ＪＰ，Ａ) 特開 平３−188459（ＪＰ，Ａ) 特開 平３−202868（ＪＰ，Ａ) 特開 昭57−108864（ＪＰ，Ａ) 特開 昭58−49978（ＪＰ，Ａ) 特開 平３−181964（ＪＰ，Ａ) 特開 昭60−14255（ＪＰ，Ａ) 特開 平４−50874（ＪＰ，Ａ) 特開 昭57−46252（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 5/00 - 5/16 G03G 13/02,15/02 G03G 13/22 - 13/24 G03G 15/22 - 15/32 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-49-53051 (JP, A) JP-A-3-188459 (JP, A) JP-A-3-202868 (JP, A) JP-A 57-530 108864 (JP, A) JP-A-58-49978 (JP, A) JP-A-3-181964 (JP, A) JP-A-60-14255 (JP, A) JP-A-4-50874 (JP, A) JP-A-57-46252 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G03G 5/00-5/16 G03G 13 / 02,15 / 02 G03G 13/22-13 / 24 G03G 15/22-15/32
Claims (2)
体を帯電させ、露光により潜像形成をし印刷を行なう電
子写真感光方法において、 前記電子写真感光体は、導電性支持体上に形成された第
１の光導電層と、第１の導電層上に形成された第２の光
導電層とを有しており、前記電子写真感光体と帯電させる帯電工程と 前記第２の
光導電層のみを導電性にさせるための光にて電子写真感
光体を露光する仮露光工程とをほぼ同時に行い、 次に 前記第１の光導電層のみを導電性にさせるための光
にて電子写真感光体を露光し潜像形成させる潜像形成工
程とを有することを特徴とする電子写真画像形成方法。1. An electrophotographic photosensitive method in which an electrophotographic photosensitive member having a photoconductive layer formed thereon is charged, a latent image is formed by exposure, and printing is performed, wherein the electrophotographic photosensitive member is provided on a conductive support. A first photoconductive layer formed on the first photoconductive layer, and a second photoconductive layer formed on the first conductive layer ; and a charging step of charging the electrophotographic photosensitive member and the second photoconductive layer. substantially performed simultaneously and temporary exposure step of exposing the electrophotographic photoreceptor with light to cause the conductive layer only conductive, then electrons in the light for causing only said first photoconductive layer on a conductive electrophotographic image forming method characterized by comprising exposing the photosensitive member and the extent latent image forming machining <br/> to latent image formation.
あって、前記電子写真感光体は、導電性支持体と、該導電性支持
体上に形成された第１の光導電層と、第１の導電層上に
形成され、第１の光導電層を露光する波長域とは異なっ
た波長域の光に対して光吸収を示す第２の光導電層とを
有する ことを特徴とする電子写真画像形成方法。2. The electrophotographic image forming method according to claim 1, wherein the electrophotographic photosensitive member includes a conductive support and the conductive support.
A first photoconductive layer formed on the body, and a first photoconductive layer formed on the first conductive layer.
Formed and different from the wavelength range for exposing the first photoconductive layer
And a second photoconductive layer that absorbs light in the
An electrophotographic image forming method, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10768091A JP3215451B2 (en) | 1991-05-13 | 1991-05-13 | Electrophotographic image forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10768091A JP3215451B2 (en) | 1991-05-13 | 1991-05-13 | Electrophotographic image forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04335647A JPH04335647A (en) | 1992-11-24 |
| JP3215451B2 true JP3215451B2 (en) | 2001-10-09 |
Family
ID=14465254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10768091A Expired - Fee Related JP3215451B2 (en) | 1991-05-13 | 1991-05-13 | Electrophotographic image forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3215451B2 (en) |
-
1991
- 1991-05-13 JP JP10768091A patent/JP3215451B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04335647A (en) | 1992-11-24 |
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