JPH07191530A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH07191530A JPH07191530A JP32934793A JP32934793A JPH07191530A JP H07191530 A JPH07191530 A JP H07191530A JP 32934793 A JP32934793 A JP 32934793A JP 32934793 A JP32934793 A JP 32934793A JP H07191530 A JPH07191530 A JP H07191530A
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- layer
- photoconductor
- conductive layer
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複写機、プリンタ、フ
ァクシミリなどに用いられる画像記録装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording device used in copying machines, printers, facsimiles and the like.
【０００２】[0002]
【従来の技術】従来、複写機・プリンタの画像形成技術
としては電子写真プロセスがあり、広く応用されてい
る。このプロセスの代表的なものとしてゼログラフィが
ある。この方式は帯電、露光、現像、転写、定着、クリ
ーニングという６工程を必要としている。これに替わる
簡略化されたプロセスとして、米国特許２，７５８，５
２４号公報（以下ＵＳＰと略す）、特開昭６１−２６０
２８３号公報などに、感光体の帯電が不要でありかつ露
光、現像、転写を同時に行うプロセスが示されている。
まずＵＳＰのプロセスについて説明する。これは透光性
支持体と透光性導電層と光導電層からなる感光体の上に
未帯電の導電粒子層を形成し、透光性支持体側から画像
露光されると、光導電層の電気抵抗が低下して露光部の
み光導電層から導電粒子へ電荷が注入される。そして電
荷注入され帯電したトナーのみ感光体上に空隙を隔てて
配置された記録紙と対向電極側へ飛翔するというもので
ある。感光体内と空隙に形成される電界は、紙の背面の
対向電極と感光体の透光性導電層間に電圧印加して得ら
れ、３ＫＶ／ｃｍ程度とされている。しかしこの場合、
光導電層内に光エネルギーで発生した正孔・電子対を解
離させ、あるいは電荷担体を移動させるには電界が不足
していると思われる。必要な高電界は１０5 Ｖ／ｃｍ程
度と一般的に言われており、空気の放電開始電介に達し
てしまう実用的でないという問題がある。ＵＳＰにおい
ては、１０5 Ｖ／ｃｍの高電界は得られていない為に、
光導電体内の電荷移動がなく、従って導電粒子への電荷
注入もあり得ないと思われる。2. Description of the Related Art Conventionally, an electrophotographic process has been widely used as an image forming technique for copying machines and printers. Xerography is a typical example of this process. This system requires six steps of charging, exposure, development, transfer, fixing and cleaning. As an alternative simplified process, US Pat. No. 2,758,5
No. 24 (hereinafter abbreviated as USP), JP-A-61-260
Japanese Patent No. 283 discloses a process in which charging of a photoconductor is unnecessary and exposure, development, and transfer are simultaneously performed.
First, the USP process will be described. This is because an uncharged conductive particle layer is formed on a photoconductor consisting of a translucent support, a translucent conductive layer, and a photoconductive layer. The electric resistance decreases, and charges are injected from the photoconductive layer into the conductive particles only in the exposed areas. Then, only the charged toner and the charged toner flies to the side of the recording paper and the counter electrode arranged on the photoconductor with a gap. The electric field formed between the photoconductor and the gap is obtained by applying a voltage between the counter electrode on the back surface of the paper and the translucent conductive layer of the photoconductor, and is about 3 KV / cm. But in this case
It seems that the electric field is insufficient to dissociate the hole-electron pairs generated by light energy in the photoconductive layer or move the charge carriers. It is generally said that the required high electric field is about 10 5 V / cm, and there is a problem that it reaches the discharge initiation point of air, which is not practical. In USP, since a high electric field of 10 5 V / cm has not been obtained,
There seems to be no charge transfer within the photoconductor and therefore no charge injection into the conductive particles.
【０００３】次に、特開昭６１−２６０２８３号公報の
プロセスを図４に基づき説明する。ＵＳＰと同様の感光
体１の上にトナー層４を形成する。電圧印加された電極
板９でこのトナーを予め正帯電させる点がＵＳＰと異な
る。この帯電トナー４により光導電層１３内に高電界が
形成されることになり、透光性支持体１１側から画像露
光されると光導電層１３の電気抵抗が低下して、帯電ト
ナー４の電荷が透光性導電層１２側へリークあるいは逆
極性の電荷が光導電層１３からトナー４へ注入されトナ
ー４は負帯電となり、そのトナー４のみが正帯電してい
る紙６へ移行し画像記録されると述べられている。この
プロセスの場合にもＵＳＰと同様、トナー４の負帯電を
瞬時に行わせる為に、トナー４が導電性である必要があ
る。しかしその場合、光導電層１３からトナー４へ注入
される電荷は導電トナー粒子間を伝い、露光部周囲へも
リークしてしまう。すなわち解像度が得られないという
問題がある。また、トナー層４の帯電量が光導電層１３
内の電界を決めるが、一般に十分トナー粒子４を飽和帯
電させたとしても帯電トナー層電位は数十Ｖ程度以下で
あり、高電荷発生に必要十分な高電界は得られず、従っ
てトナー４への電化注入が不十分になり、十分な量のト
ナーが飛翔しないと思われる。Next, the process of JP-A-61-260283 will be described with reference to FIG. The toner layer 4 is formed on the photoconductor 1 similar to USP. This is different from USP in that the toner is previously positively charged by the electrode plate 9 to which a voltage is applied. A high electric field is formed in the photoconductive layer 13 by the charged toner 4, and the electrical resistance of the photoconductive layer 13 decreases when image exposure is performed from the translucent support 11 side. The charge leaks to the transparent conductive layer 12 side or the charge of the opposite polarity is injected from the photoconductive layer 13 into the toner 4 and the toner 4 becomes negatively charged, and only the toner 4 moves to the positively charged paper 6 and the image is formed. It is said to be recorded. In the case of this process as well, similar to USP, the toner 4 needs to be conductive so that the toner 4 can be negatively charged instantly. However, in that case, the charges injected from the photoconductive layer 13 into the toner 4 are transmitted between the conductive toner particles and leak to the periphery of the exposed portion. That is, there is a problem that the resolution cannot be obtained. In addition, the charge amount of the toner layer 4 depends on the photoconductive layer 13.
The electric field inside is determined, but generally, even if the toner particles 4 are sufficiently saturated and charged, the potential of the charged toner layer is about several tens V or less, and a high electric field necessary and sufficient for generating a high charge cannot be obtained. It seems that the electric charge injection is insufficient and a sufficient amount of toner does not fly.
【０００４】[0004]
【発明が解決しようとする課題】従って、上述の様な問
題点に鑑み、本発明では光導電層内に十分な電界強度を
確保でき、かつ導電性粒子導電性インクを用いた場合で
も電荷の横方向へのリークが無く、解像度を確保でき
る、帯電・露光・現像・伝写を同時に行える画像形成装
置を提供することを目的とする。Therefore, in view of the above problems, according to the present invention, a sufficient electric field strength can be ensured in the photoconductive layer, and even when the conductive particle conductive ink is used, the charge It is an object of the present invention to provide an image forming apparatus capable of simultaneously performing charging, exposure, development, and transmission, which has no lateral leak and ensures resolution.
【０００５】[0005]
【課題を解決するための手段】本発明の画像形成装置
は、透光性支持体と透光性導電層・光導電層を順次積層
した感光体と、この感光体を透光性支持体側から画像信
号に応じて露光する露光源と、多数の微小孔に導電性着
色粒子あるいは導電性インクを保持し、該導電性着色粒
子あるいは導電性インクとは電気的に絶縁されるように
形成された導電層を持ち、前記微小孔から露出した前記
導電性着色粒子あるいは導電性インクを前記光導電層表
面に接触させながら相対的に移動する搬送シートと、前
記搬送シートの導電層と前記感光体の透光性導電層の間
に電圧を印加する手段と、前記搬送シートの微小孔に導
電性着色粒子あるいは導電性インクを補給する手段と、
前記搬送シートの感光体側と反対側に、空隙を隔てて記
録紙と対向電極を順次設け、該対向電極と前記搬送シー
トの導電層間に電圧を印加する手段とを有している。The image forming apparatus of the present invention comprises a photoconductor in which a translucent support, a translucent conductive layer and a photoconductive layer are sequentially laminated, and the photoconductor is placed from the translucent support side. An exposure source for exposing according to an image signal, and conductive fine particles or conductive ink held in a large number of minute holes were formed so as to be electrically insulated from the conductive colored particles or conductive ink. A carrier sheet having a conductive layer and relatively moving while contacting the conductive colored particles or conductive ink exposed from the micropores with the surface of the photoconductive layer, and a conductive layer of the carrier sheet and the photoreceptor. Means for applying a voltage between the translucent conductive layers, and means for replenishing the conductive pores of the transport sheet with conductive colored particles or conductive ink.
The recording sheet and the counter electrode are sequentially provided on the opposite side of the carrier sheet from the side of the photoconductor with a gap therebetween, and means for applying a voltage between the counter electrode and the conductive layer of the carrier sheet.
【０００６】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。図１は本発明の一実施例の画像形成装置の概略図で
ある。無帯電の導電性微粒子は補給機５０により搬送シ
ート２の後述する微小孔２３に充填される。この搬送シ
ートは図示した矢印方向に感光体１の上を移動する。感
光体上で後述するメカニズムで帯電した導電性微粒子の
みが、記録紙６の裏にある対向電極７と感光体の間に電
源８０により形成された静電界により飛翔させられ、記
録紙６に打ち当たる。例えば、対向電極７と感光体１の
距離は約３ｍｍ、電源８０の印加電圧は５００Ｖであ
る。電界としては１０3 Ｖ／ｃｍオーダーである。記録
紙６は図示した矢印方向に等速移動し、図示していない
公知の定着装置によりこの導電微粒子像は定着される。
一方感光体１上で帯電・飛翔しなかった導電微粒子は搬
送シート２の移動とともに搬送され、クリーナ５１で回
収され補給機５０に戻され再利用される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of an image forming apparatus according to an embodiment of the present invention. The uncharged conductive fine particles are filled by the replenishing device 50 into the fine holes 23 to be described later of the conveying sheet 2. The transport sheet moves on the photoconductor 1 in the direction of the arrow shown. Only the conductive fine particles charged on the photoconductor by the mechanism described later are made to fly by the electrostatic field formed by the power supply 80 between the counter electrode 7 on the back of the recording paper 6 and the photoconductor, and hit the recording paper 6. Hit For example, the distance between the counter electrode 7 and the photoconductor 1 is about 3 mm, and the applied voltage of the power source 80 is 500V. The electric field is on the order of 10 3 V / cm. The recording paper 6 moves at a constant speed in the direction of the arrow shown in the figure, and the conductive fine particle image is fixed by a known fixing device (not shown).
On the other hand, the conductive fine particles that have not been charged or flown on the photoconductor 1 are transported as the transport sheet 2 moves, and are collected by the cleaner 51 and returned to the replenisher 50 for reuse.
【０００７】次に、図３に搬送シート２の感光体側から
見た平面図を示す。図３に示すように、搬送シート２に
は千鳥配列で微小孔２３が多数設けられている。配列パ
ターンはこの千鳥配列に限らず種々のものが用いられ得
る。Next, FIG. 3 shows a plan view of the conveying sheet 2 as seen from the photosensitive member side. As shown in FIG. 3, the transport sheet 2 is provided with a large number of minute holes 23 in a staggered arrangement. The array pattern is not limited to this zigzag array and various patterns can be used.
【０００８】さらに、図２に感光体１と搬送シード２の
断面拡大模式図を示す。図２により導電性微粒子４の帯
電及び飛翔のメカニズムを詳細に説明する。感光体１
は、ガラスなどの透光性支持体１１、ＩＴＯ（インジウ
ム−錫−酸化物）などの透光性導電層１２、光導電層１
３を順次積層したものである。光導電層１３としては、
透光性導電層１２の上に、暗示の電荷注入を阻止する
層、電荷発生層、電荷輸送層を順次積層した有機光導電
層、あるいは非晶質セレン系、非晶質シリコン系、酸化
亜鉛−樹脂分散型光導電層など公知の光導電層が使用可
能である。さらに、光導電層表層にナイロンなどの高分
子超薄層を設け電荷通過が可能であり摩耗防止機能を持
つオーバーコート層を設けても良い。また、従来の電子
写真法とは異なり光導電層表面に静電潜像を現象までの
時間保持する必要が無いので、電荷輸送層をもたない、
暗時の電荷注入を阻止する層、電荷発生層、オーバーコ
ート層を順次積層した光導電層を使用するとも可能であ
る。一方、輸送シート２は、絶縁性部材２１にテーパ状
微小孔２３が開けられており、絶縁性部材２１の裏面に
は導電層２２が導電性微粒子と電気的に導通することが
ないように設けられている。絶縁性部材２１はポリエス
テル、ポリイミドなどの厚み２０μｍ〜１ｍｍの可とう
性高分子フィルムなどを用いることができ、導電層２２
はアルミなどの金属を蒸着することにより得られる。こ
の導電層２２と感光体１内の透光性導電層１２の間に電
源８１により電圧が印加され、感光体内に高電界が形成
されている。光導電層１３には前述の様に各種光導電層
が用いられるが、例えば有機感光体を用いる場合には層
厚が約１０μｍであり、１００Ｖの電源８１を用いれば
光導電層１３内の電子−正孔体の解離、及び電荷担体
（例えば一般的負帯電型有機感光体の場合には正孔）の
移動に要すると言われる電界に達している。この状態で
感光体１の透光性支持体１１の側から画像信号に応じて
露光すると、光導電層１３で光エネルギーにより発生し
た電子−正孔対は高電界により解離し、電子は透光性導
電層１２へ移動し、正孔は反対の搬送シート２側へ移動
する。画像信号の露光スポット径内に微小孔２３が数個
存在するように微小孔は平面配置されている。移動して
きた正孔の一部は搬送シート２の導電層２２へ注入され
るが、一部は微小孔２３から露出した導電性微粒子４へ
も注入され、従って露光面積内にある微小孔内の導電性
微粒子は正に誘導帯電される。この様にして正帯電した
導電性微粒子は、前述のように１０3 Ｖ／ｃｍオーダー
の電界により記録紙６へ飛翔し、画像記録される。Further, FIG. 2 shows a schematic enlarged sectional view of the photosensitive member 1 and the transport seed 2. The mechanism of charging and flying of the conductive fine particles 4 will be described in detail with reference to FIG. Photoconductor 1
Is a transparent support 11 such as glass, a transparent conductive layer 12 such as ITO (indium-tin-oxide), a photoconductive layer 1.
3 is sequentially laminated. As the photoconductive layer 13,
An organic photoconductive layer in which an implicit charge injection blocking layer, a charge generation layer, and a charge transport layer are sequentially stacked on the transparent conductive layer 12, or an amorphous selenium-based, amorphous silicon-based, or zinc oxide layer. -A known photoconductive layer such as a resin-dispersed photoconductive layer can be used. Further, an ultra-thin polymer layer such as nylon may be provided on the surface layer of the photoconductive layer to provide an overcoat layer capable of passing charges and having a wear preventing function. Further, unlike the conventional electrophotographic method, since it is not necessary to hold an electrostatic latent image on the surface of the photoconductive layer until the phenomenon occurs, it has no charge transport layer.
It is also possible to use a photoconductive layer in which a layer that blocks charge injection in the dark, a charge generation layer, and an overcoat layer are sequentially stacked. On the other hand, the transport sheet 2 has tapered minute holes 23 formed in the insulating member 21, and is provided on the back surface of the insulating member 21 so that the conductive layer 22 is not electrically connected to the conductive fine particles. Has been. As the insulating member 21, a flexible polymer film having a thickness of 20 μm to 1 mm such as polyester or polyimide can be used, and the conductive layer 22 can be used.
Is obtained by depositing a metal such as aluminum. A voltage is applied by a power source 81 between the conductive layer 22 and the transparent conductive layer 12 in the photoconductor 1 to form a high electric field in the photoconductor. Various photoconductive layers are used for the photoconductive layer 13 as described above. For example, when an organic photoconductor is used, the layer thickness is about 10 μm, and if the power supply 81 of 100 V is used, the electrons in the photoconductive layer 13 are An electric field which is said to be required for the dissociation of the hole bodies and the movement of the charge carriers (eg holes in the case of common negatively chargeable organic photoreceptors). In this state, when exposure is performed from the transparent support 11 side of the photoconductor 1 according to an image signal, the electron-hole pairs generated by the light energy in the photoconductive layer 13 are dissociated by the high electric field, and the electrons are transmitted. The holes move to the conductive conductive layer 12, and the holes move to the opposite transport sheet 2 side. The micro holes are arranged in a plane so that several micro holes 23 exist within the exposure spot diameter of the image signal. Some of the holes that have moved are injected into the conductive layer 22 of the transport sheet 2, but some of the holes are also injected into the conductive fine particles 4 exposed from the micropores 23, so that the inside of the micropores within the exposed area are exposed. The conductive fine particles are positively and electrically charged. The conductive fine particles thus positively charged fly to the recording paper 6 by an electric field of the order of 10 3 V / cm, and an image is recorded thereon.
【０００９】微小孔２３の断面は図２のごとくテーパー
状になっていることが好ましく、感光体側開口径は導電
微粒子の径よりわずか小さく形成されることが好まし
い。その場合、導電性微粒子が搬送シート２を通過する
ことなく光導電性表面に接触しながら移動できる。また
微小孔２３はそれぞれ電気的に絶縁されており、導電層
２２も導電性微粒子４と電気的に接触導通する事がない
ように図３平面図のように形成されているので、光導電
層から注入された電荷が隣接する微小光へリークするこ
とが無い。従って、帯電・飛翔するのは露光部面積内の
微小孔に充填されている導電性微粒子のみであり、解像
度が得られないという問題は発生しない。The cross section of the micropore 23 is preferably tapered as shown in FIG. 2, and the opening diameter on the photoreceptor side is preferably formed slightly smaller than the diameter of the conductive fine particles. In that case, the conductive fine particles can move while contacting the photoconductive surface without passing through the transport sheet 2. Further, the micropores 23 are electrically insulated from each other, and the conductive layer 22 is formed as shown in the plan view of FIG. 3 so as not to come into electrical contact with the conductive fine particles 4, so that the photoconductive layer is formed. The charges injected from the device do not leak to the adjacent minute light. Therefore, only the conductive fine particles filled in the minute holes within the exposed area are charged and fly, and the problem that resolution cannot be obtained does not occur.
【００１０】また、搬送シート２の導電層２２は、本実
施例では絶縁層２１の裏面に形成されているが、光導電
層１３に近接して、導電性微粒子４と電気的に絶縁され
ているという条件が守られておればよく、例えば、絶縁
層２１にサンドイッチ状に挟まれて形成されていてもよ
い。Further, the conductive layer 22 of the transport sheet 2 is formed on the back surface of the insulating layer 21 in the present embodiment, but is close to the photoconductive layer 13 and electrically insulated from the conductive fine particles 4. It is only necessary that the condition of being present is kept, and for example, the insulating layer 21 may be sandwiched and formed.
【００１１】導電性微粒子４は、本実施例においては感
光体上に来るまでは無帯電であったが、予め対向電極７
の極性と同一に帯電させておいてもなんら問題ない。そ
の場合には、感光体の露光部の導電性微粒子のみが対向
電極と反対極性に帯電させられ記録紙へ吸引され、非画
像部は対向電極と同極性であるため静電的反発力が存在
するこになり、積極的にかぶりを防止うることになる。
尚、予め導電性微粒子４を帯電させる方法としては、補
給機５０の導電性微粒子の出口に導電ブレード、導電ブ
ラシなど導電性微粒子４に接触する電極を設け、誘導帯
電させることができる。In the present embodiment, the conductive fine particles 4 were not charged until they reached the photosensitive member, but the counter electrode 7 was previously formed.
There is no problem even if it is charged with the same polarity as that of. In that case, only the conductive fine particles in the exposed area of the photoconductor are charged to the opposite polarity of the counter electrode and attracted to the recording paper, and the non-image area has the same polarity as the counter electrode, so there is electrostatic repulsion. As a result, fogging can be positively prevented.
As a method of previously charging the conductive fine particles 4, an electrode such as a conductive blade or a conductive brush which contacts the conductive fine particles 4 may be provided at the outlet of the conductive fine particles of the replenishing device 50 for induction charging.
【００１２】次に導電性インクを使用する例を図５と図
６に示す。図５はインク５を保持した搬送シート２と感
光体１の接触部拡大模式図であり、図６はそれを用いた
画像形成装置例の主要部概略図である。図５に示す様
に、導電性の粘性インク５を前述の導電性微粒子の場合
と同じように搬送シート２に保持させる。微小孔２３の
開口からインク５の一部が露出し光導電層１３に接触し
ながら移動する。画像露光部のみ光導電層１３から正孔
が導電性インク５へ注入されインク５は正帯電し、紙と
導電層２２間の静電界によりインク滴となり飛翔する。
インク５は図６に示されるインクパッド５２により搬送
シート２へ補給される。搬送シート２はエンドレスベル
トであり、繰り返し使用され、感光体上通過後の残留イ
ンクは微小孔に保持されるので、そのまま再度利用され
る。Next, an example of using a conductive ink is shown in FIGS. FIG. 5 is an enlarged schematic diagram of a contact portion between the conveying sheet 2 holding the ink 5 and the photoconductor 1, and FIG. 6 is a schematic diagram of a main portion of an example of an image forming apparatus using the same. As shown in FIG. 5, the conductive viscous ink 5 is held on the transport sheet 2 as in the case of the conductive fine particles described above. Part of the ink 5 is exposed from the opening of the minute hole 23 and moves while contacting the photoconductive layer 13. Holes are injected into the conductive ink 5 from the photoconductive layer 13 only in the image-exposed portion, the ink 5 is positively charged, and the electrostatic discharge field between the paper and the conductive layer 22 causes ink droplets to fly.
The ink 5 is supplied to the transport sheet 2 by the ink pad 52 shown in FIG. The conveying sheet 2 is an endless belt, is repeatedly used, and the residual ink after passing on the photoconductor is retained in the minute holes, so that it is reused as it is.
【００１３】[0013]
【発明の効果】以上説明したように、本発明の画像形成
装置は、導電性微粒子あるいは導電性インクを搬送する
シートの導電層と感光体内の透光性導電層間に高電界を
形成することが可能になり、それにより光導電層に接触
した導電性着色微粒子あるいは導電性インクを誘導帯電
させ、空隙を隔て配置される記録紙へ飛翔させ、画像記
録させることが可能となる。さらに、導電性微粒子ある
いは導電性インク搬送シートは多数の微小孔を持ち、隣
接する微小孔内の導電性微粒子あるいは導電性インクど
うしは電気的に絶縁されているので、光導電層から注入
された電荷が導電性微粒子あるいは導電性インクを伝っ
て他の微小孔へリークすることがなく、十分な解像度を
得られという効果がある。このプロセスにより、従来の
ゼログラフィーの帯電・露光・現像・転写を同時に行え
る簡略化された画像形成装置が得られる。As described above, the image forming apparatus of the present invention can form a high electric field between the conductive layer of the sheet carrying the conductive fine particles or the conductive ink and the transparent conductive layer in the photoreceptor. As a result, the conductive colored fine particles or the conductive ink in contact with the photoconductive layer can be induction-charged, and can be made to fly to the recording paper arranged with a space therebetween to record an image. Further, the conductive fine particles or the conductive ink carrying sheet has a large number of fine holes, and the conductive fine particles or the conductive ink in the adjacent fine holes are electrically insulated from each other, so that they are injected from the photoconductive layer. There is an effect that electric charge does not leak through the conductive fine particles or the conductive ink to other micropores and a sufficient resolution can be obtained. By this process, a simplified image forming apparatus capable of simultaneously performing conventional xerographic charging, exposing, developing and transferring can be obtained.
【図１】本発明の一実施例の画像形成装置の概略図であ
る。FIG. 1 is a schematic diagram of an image forming apparatus according to an embodiment of the present invention.
【図２】本発明の画像形成装置例の感光体部断面拡大模
式図である。FIG. 2 is an enlarged schematic view of a cross section of a photoconductor portion of an example of the image forming apparatus of the present invention.
【図３】本発明の画像形成装置に用いられる搬送シート
の、感光体側から見た平面図。FIG. 3 is a plan view of a conveyance sheet used in the image forming apparatus of the present invention, viewed from the side of the photoconductor.
【図４】従来技術の画像形成装置の概略図である。FIG. 4 is a schematic diagram of a conventional image forming apparatus.
【図５】本発明の別の実施例の画像形成装置の感光体部
断面拡大模式図である。FIG. 5 is an enlarged schematic view of a cross section of a photosensitive member of an image forming apparatus according to another embodiment of the present invention.
【図６】本発明の別の実施例の画像形成装置の概略図で
ある。FIG. 6 is a schematic view of an image forming apparatus according to another embodiment of the present invention.
１ 感光体 ２ 搬送シート ３ 露光装置 ４ 導電性着色微粒子 ５ 導電性インク ６ 記録紙 ７ 対向電極 １１ 透光性支持体 １２ 透光性導電層 １３ 光導電層 ２１ 絶縁層 ２２ 導電層 ２３ 微小孔 ５０ 補給機 ５１ クリーナー ５２ インクパッド ８０ 電源 ８１ 電源 1 Photoreceptor 2 Conveying Sheet 3 Exposure Device 4 Conductive Colored Fine Particles 5 Conductive Ink 6 Recording Paper 7 Counter Electrode 11 Translucent Support 12 Translucent Conductive Layer 13 Photoconductive Layer 21 Insulating Layer 22 Conductive Layer 23 Micropores 50 Replenisher 51 Cleaner 52 Ink pad 80 Power 81 Power
Claims (1)
を順次積層した感光体と、この感光体を透光性支持体側
から画像信号に応じて露光する露光源と、多数の微小孔
に導電性着色粒子あるいは導電性インクを保持し、該導
電性着色粒子あるいは導電性インクとは電気的に絶縁さ
れるように形成された導電層を持ち、前記微小孔から露
出した前記導電性着色粒子あるいは導電性インクを前記
光導電層表面に接触させながら相対的に移動する搬送シ
ートと、前記搬送シートの導電層と前記感光体の透光性
導電層の間に電圧を印加する手段と、前記搬送シートの
微小孔に導電性着色粒子あるいは導電性インクを補給す
る手段と、前記搬送シートの感光体側と反対側に、空隙
を隔てて記録紙と対向電極を順次設け、該対向電極と前
記搬送シートの導電層間に電圧を印加する手段とを設け
た画像形成装置。1. A photoconductor in which a translucent support, a translucent conductive layer and a photoconductive layer are sequentially laminated, an exposure source which exposes the photoconductor from the translucent support side in accordance with an image signal, and a large number. Holding conductive colored particles or conductive ink in the micropores, and having a conductive layer formed so as to be electrically insulated from the conductive colored particles or conductive ink, and exposed from the micropores. A voltage is applied between the transport sheet that moves relatively while bringing the conductive colored particles or conductive ink into contact with the surface of the photoconductive layer, and the conductive layer of the transport sheet and the translucent conductive layer of the photoreceptor. Means, means for supplying conductive colored particles or conductive ink to the minute holes of the carrying sheet, and a recording paper and a counter electrode are sequentially provided on the opposite side of the carrying sheet from the photoconductor side with a gap, Conduction between electrodes and the transfer sheet An image forming apparatus provided with means for applying a voltage between layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5329347A JP2853543B2 (en) | 1993-12-27 | 1993-12-27 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5329347A JP2853543B2 (en) | 1993-12-27 | 1993-12-27 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07191530A true JPH07191530A (en) | 1995-07-28 |
| JP2853543B2 JP2853543B2 (en) | 1999-02-03 |
Family
ID=18220445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5329347A Expired - Fee Related JP2853543B2 (en) | 1993-12-27 | 1993-12-27 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2853543B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252620B1 (en) | 1998-07-03 | 2001-06-26 | Nec Corporation | Image recording apparatus and image recording method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5451834A (en) * | 1977-10-01 | 1979-04-24 | Canon Inc | Forming method and apparatus of images |
| JPH0224672A (en) * | 1988-07-13 | 1990-01-26 | Seikosha Co Ltd | Electrophotographic recording device |
-
1993
- 1993-12-27 JP JP5329347A patent/JP2853543B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5451834A (en) * | 1977-10-01 | 1979-04-24 | Canon Inc | Forming method and apparatus of images |
| JPH0224672A (en) * | 1988-07-13 | 1990-01-26 | Seikosha Co Ltd | Electrophotographic recording device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252620B1 (en) | 1998-07-03 | 2001-06-26 | Nec Corporation | Image recording apparatus and image recording method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2853543B2 (en) | 1999-02-03 |
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