JPH0572913A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0572913A JPH0572913A JP3261111A JP26111191A JPH0572913A JP H0572913 A JPH0572913 A JP H0572913A JP 3261111 A JP3261111 A JP 3261111A JP 26111191 A JP26111191 A JP 26111191A JP H0572913 A JPH0572913 A JP H0572913A
- Authority
- JP
- Japan
- Prior art keywords
- image
- transfer material
- image forming
- belt
- photosensitive drum
- 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
- Printers Characterized By Their Purpose (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Color Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば電子写真式或は
静電記録式にて像担持体上に可視画像、即ちトナー像を
形成し、このトナー像を転写材支持部材にて担持し搬送
される転写材に転写し画像を得る画像形成装置に関する
ものであり、特に、転写材にトナー像を多重転写して多
色画像を得る多色画像形成装置に好適に具現化し得るも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention forms a visible image, that is, a toner image on an image carrier by, for example, an electrophotographic system or an electrostatic recording system, and the toner image is carried by a transfer material supporting member. The present invention relates to an image forming apparatus that transfers an image to a transferred transfer material to obtain an image, and in particular, can be suitably embodied in a multicolor image forming apparatus that multiplex transfers toner images onto a transfer material to obtain a multicolor image. ..
【０００２】[0002]
【従来の技術】従来、例えば電子写真式の多色画像形成
装置においては、像担持体上に形成されたトナー像は、
通常、弾性の低い樹脂材のシート上転写材支持部材に担
持された転写材に多重転写される。2. Description of the Related Art Conventionally, in an electrophotographic multicolor image forming apparatus, for example, a toner image formed on an image carrier is
Usually, multiple transfer is performed on a transfer material carried on a transfer material support member on a sheet of a resin material having low elasticity.
【０００３】又、一方、このような多色画像形成装置に
おいては、画質劣化を引き起こさないために、像担持体
である電子写真感光体の吸湿度を一定に保つことが行な
われており、そのために、感光体の温度を一定に保持す
る制御がなされている。On the other hand, in such a multicolor image forming apparatus, in order to prevent deterioration of image quality, it is performed to keep the moisture absorption of the electrophotographic photosensitive member, which is an image carrier, constant. In addition, control is performed to keep the temperature of the photoconductor constant.
【０００４】このような温度制御は、感光体近傍に設置
した温度検知センサの信号により、装置内に設けたマイ
クロコンピュータを介して、感光体に付設した発熱体を
ＯＮ／ＯＦＦして行なわれている。又、斯る温度制御の
ための回路は、電源スイッチＯＮによる装置の立ち上が
り時間を短縮するべく電源スイッチのＯＮ／ＯＦＦに関
係なく作動するように工夫されている。Such temperature control is performed by turning on / off a heating element attached to the photoconductor via a microcomputer provided in the apparatus in response to a signal from a temperature detection sensor provided near the photoconductor. There is. Further, such a circuit for temperature control is devised so as to operate regardless of ON / OFF of the power switch in order to shorten the rise time of the device when the power switch is turned on.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来装置では、装置が停止状態にある場合には、像担持体
と転写材支持部材は接触し、且つ互に静止状態に維持さ
れている。従って、像担持体近傍の転写材支持部材は、
その静止時間の長さに比例して、像担持体の熱の影響を
受け、変形されることとなる。However, in the above-mentioned conventional apparatus, when the apparatus is in a stopped state, the image carrier and the transfer material supporting member are in contact with each other and are kept stationary with respect to each other. Therefore, the transfer material support member near the image carrier is
In proportion to the length of the stationary time, the image bearing member is affected by heat and is deformed.
【０００６】転写材は、転写材支持部材に、例えば静電
吸着或はエアー吸着などにより完全に密着して担持さ
れ、転写位置へと搬送されるので、もし転写材支持部材
が変形した場合には、転写材が転写材支持部材に密着せ
ず、浮いた状態となる。この状態では、転写位置にて転
写材が像担持体に当接された時、像担持体と転写材との
間に生じる転写電流を乱し、トナー像の転写に際して著
しく画質を劣化させ、特に、転写材が浮いた状態とされ
た場合には転写位置にてジャム（紙詰まり）を生じるこ
とがある。[0006] The transfer material is carried by the transfer material supporting member in close contact with it by, for example, electrostatic adsorption or air adsorption, and is conveyed to the transfer position. Therefore, if the transfer material supporting member is deformed. The transfer material does not adhere to the transfer material support member and is in a floating state. In this state, when the transfer material comes into contact with the image carrier at the transfer position, the transfer current generated between the image carrier and the transfer material is disturbed, and the image quality is significantly deteriorated when the toner image is transferred. When the transfer material is in a floating state, a jam (paper jam) may occur at the transfer position.
【０００７】又、ジャムなどに到らなくとも、転写材支
持部材の速度ムラを来す原因ともなり、特に多色画像を
形成する多色画像形成装置にあっては、微小な速度ムラ
が画像を劣化させる要因となるので、問題が大きい。Even if a jam or the like does not occur, it may cause speed unevenness of the transfer material supporting member. Especially, in a multicolor image forming apparatus for forming a multicolor image, minute speed unevenness causes an image. It becomes a factor that deteriorates, and thus the problem is large.
【０００８】従って、本発明の目的は、転写材支持部材
の像担持体からの熱影響による変形を防止し、転写材支
持部材による転写材の密着支持を可能とし、ジャムの発
生及び画質の劣化を解決し、常に高品質の画像を得るこ
とのできる画像形成装置を提供することである。Therefore, it is an object of the present invention to prevent the transfer material supporting member from being deformed due to the influence of heat from the image carrier and to allow the transfer material supporting member to closely support the transfer material, thereby causing a jam and degrading the image quality. It is an object of the present invention to provide an image forming apparatus that solves the above problem and can always obtain a high quality image.
【０００９】[0009]
【課題を解決するための手段】上記目的は本発明に係る
画像形成装置にて達成される。要約すれば、本発明は、
可視画像が形成される少なくとも一つ以上の像担持体
と、転写材を担持して該転写材を転写位置へと搬送し、
前記像担持体上の可視画像を前記転写材へと転写せしめ
る転写材支持部材とを備えた画像形成装置において、画
像形成装置が停止状態において、前記転写材支持部材を
前記像担持体に対して所定時間以内に所定距離以上、移
動せしめることを特徴とする画像形成装置である。The above object can be achieved by an image forming apparatus according to the present invention. In summary, the present invention
At least one image carrier on which a visible image is formed, and a transfer material are carried and the transfer material is conveyed to a transfer position,
In an image forming apparatus provided with a transfer material support member for transferring a visible image on the image carrier to the transfer material, the transfer material support member with respect to the image carrier is in a stopped state. The image forming apparatus is characterized in that it can be moved a predetermined distance or more within a predetermined time.
【００１０】[0010]
【実施例】次に、本発明に係る画像形成装置を図面に即
して更に詳しく説明する。図１に示す実施例にて、本発
明は電子写真方式のレーザビームカラープリンタ（以下
「ＬＢＰ装置」と言う。）に具現化されている。The image forming apparatus according to the present invention will be described in more detail with reference to the drawings. In the embodiment shown in FIG. 1, the present invention is embodied in an electrophotographic laser beam color printer (hereinafter referred to as "LBP device").
【００１１】図１を参照して、ＬＢＰ装置１の構成及び
作動態様を簡単に説明する。本実施例にてＬＢＰ装置１
は３つの画像形成ステーシヨンI 、II、III を有し、画
像形成ステーシヨンI 、II、IIIの下方には、転写材４
６を担持し、搬送するための転写材支持部材である搬送
ベルト２６を備えた搬送手段３９が配置され、又該搬送
手段３９の出口部には転写材上の画像を該転写材上に熱
定着するため熱ローラ対５６ａ、５６ｂを備えた定着手
段５６が配置される。搬送ベルト２６は、ドラム３４、
３５の間に張設され、駆動手段（図示せず）にて無端移
動可能とされる。The configuration and operating mode of the LBP device 1 will be briefly described with reference to FIG. In this embodiment, the LBP device 1
Has three image forming stations I, II, and III. Below the image forming stations I, II, and III, the transfer material 4 is provided.
6, a carrying means 39 having a carrying belt 26 which is a transfer material supporting member for carrying and carrying 6 is arranged, and at the exit of the carrying means 39, an image on the transfer material is heated on the transfer material. A fixing unit 56 including a pair of heat rollers 56a and 56b is arranged for fixing. The conveyor belt 26 includes a drum 34,
It is stretched between 35 and can be moved endlessly by a driving means (not shown).
【００１２】各画像形成ステーシヨンI 、II、III は、
画像を形成するための手段、例えば一定速度で回転して
いる像担持体、即ち、本実施例では三つの電子写真感光
体ドラム１１、１２、１３、帯電器１４、１５、１６、
現像器１７、１８、１９、転写帯電器２０、２１、２
２、及びクリーニング装置２３、２４、２５を有する。The image forming stations I, II, and III are
Means for forming an image, for example, an image carrier rotating at a constant speed, that is, three electrophotographic photosensitive drums 11, 12, 13 in this embodiment, chargers 14, 15, 16,
Developing devices 17, 18, 19 and transfer charging devices 20, 21, 2
2 and cleaning devices 23, 24, 25.
【００１３】各画像形成ステーシヨンI 、II、III に入
力される画像信号は、記録原画像を赤、青、緑色成分に
色分解した３つの画像信号により構成されており、各色
成分の画像信号が連続的（シリアル）に各画像形成ステ
ーシヨンに転送される。The image signals input to the image forming stations I, II, and III are composed of three image signals obtained by color-separating the original recording image into red, blue, and green components. It is transferred to each image forming station in a continuous (serial) manner.
【００１４】更に説明すれば、画像信号は赤、青、緑色
成分の順に或る一定間隔を置いて入力される。外部装置
よりＬＢＰ装置１に画像信号が入力されると、一番最初
に送られてくる緑色成分の画像信号は、画像形成ステー
シヨンI のレーザースキヤナ２に入力される。To explain further, the image signal is input in the order of red, blue and green components at a certain fixed interval. When an image signal is input to the LBP device 1 from an external device, the image signal of the green component sent first is input to the laser scanner 2 of the image forming station I.
【００１５】レーザースキヤナ２は、緑色成分の画像信
号に基づいて、内蔵したレーザーダイオードより変調発
光されたレーザー光５を、回転しているポリゴンミラー
に当て、平行走査状態とし、次いで、折り返えしミラー
８を介して、一定速度で回転している感光体ドラム１１
表面に投射結像し、感光体ドラム１１の回転方向と垂直
方向に走査を行なう。斯るレーザースキヤナー２の作動
により、帯電器１４にて一様に帯電された感光体ドラム
１１の表面に記録画像の緑色成分の潜像が形成される。The laser scanner 2 irradiates a rotating polygon mirror with a laser beam 5 modulated and emitted by a built-in laser diode on the basis of an image signal of a green component, sets a parallel scanning state, and then returns the beam. Photoconductor drum 11 rotating at a constant speed through the mirror 8
A projected image is formed on the surface, and scanning is performed in the direction perpendicular to the rotation direction of the photosensitive drum 11. By the operation of the laser scanner 2, the latent image of the green component of the recorded image is formed on the surface of the photoconductor drum 11 that is uniformly charged by the charger 14.
【００１６】感光体ドラム１１に形成された潜像は、現
像器１７内に充填されたマゼンタ色のトナーにより現像
され、顕像化される。マゼンタ色トナーにより顕像化さ
れた記録画像は、搬送ベルト２６に載置され、搬送され
てくる転写材４６上に転写帯電器２０の働きにより、転
写される。The latent image formed on the photoconductor drum 11 is developed by the magenta toner filled in the developing device 17 and visualized. The recorded image visualized with magenta toner is placed on the conveyor belt 26 and transferred onto the conveyed transfer material 46 by the operation of the transfer charger 20.
【００１７】緑色成分の画像信号が終ると続いて、赤色
成分の画像信号がレーザースキヤナ３に入力され、上述
と同様の過程を経て、現像器１８内のシアン色トナーに
より感光体ドラム１２上にシアン色画像が顕像化され
る。該シアン色画像は、感光体ドラム１１方向より搬送
されてくる転写材４６上のマゼンタ色画像の上に、転写
帯電器２１の働きにより、重ねて転写される。After the image signal of the green component is completed, the image signal of the red component is input to the laser scanner 3, and the cyan toner in the developing device 18 causes the toner image on the photosensitive drum 12 through the same process as described above. The cyan image is visualized. The cyan color image is transferred onto the magenta color image on the transfer material 46 conveyed from the direction of the photosensitive drum 11 by the function of the transfer charger 21.
【００１８】赤色成分の画像信号が終了すると続いて入
力されてくる青色成分の画像信号は、レーザースキヤナ
４に入力され、上述と同様な過程を経て、感光体ドラム
１３表面にイエロー色画像を形成する。該イエロー色画
像は、感光体ドラム１２の方向より搬送ベルト２６に乗
つて搬送されてくる転写材４６上のシアン色画像の上
に、転写帯電器２２の働きにより、重ねて転写される。When the image signal of the red component is completed, the image signal of the blue component that is subsequently input is input to the laser scanner 4, and the yellow image is formed on the surface of the photosensitive drum 13 through the same process as described above. Form. The yellow image is transferred onto the cyan image on the transfer material 46, which is carried by the conveyor belt 26 in the direction of the photoconductor drum 12, by the operation of the transfer charger 22.
【００１９】上記作動により、転写材上にはマゼンタ、
シアン、イエローの各色トナーによる記録画像が重層状
態に転写され、次いで該転写材４６は、搬送ベルト２６
により定着手段５６へと送られる。By the above operation, magenta,
The recording images of cyan and yellow toners are transferred in a multi-layered state, and then the transfer material 46 is transferred to the conveyor belt 26.
To the fixing means 56.
【００２０】そこで、転写材４６上の各色トナーは定着
手段５６内の加熱したローラ５６ａ、５６ｂ間を通るこ
とにより熱と圧力を加えられ、融け合つて減色混合を行
ない、フルカラー記録画像が形成され、転写材４６表面
に定着される。Then, each color toner on the transfer material 46 is applied with heat and pressure by passing between the heated rollers 56a and 56b in the fixing means 56, and is fused to perform subtractive color mixing to form a full-color recorded image. , And is fixed on the surface of the transfer material 46.
【００２１】又、感光体ドラム１１、１２、１３は、一
定温度に保持されている。つまり、感光体ドラム１１、
１２、１３の温度制御は、温度センサ（図示せず）によ
り各感光体ドラムの温度を検出し、装置内のマイクロコ
ンピュータにより検出温度と設定温度とを比較すること
により各感光体ドラムに設置した発熱体（図示せず）を
ＯＮ／ＯＦＦ制御して行なわれる。このような温度制御
は、装置の立ち上がり時間を短縮するために、装置の電
源をＯＦＦとした状態においても作動状態に維持されて
おり、装置のコンセントを抜くなどして電源を遮断しな
い限り作動状態にある。The photosensitive drums 11, 12, 13 are kept at a constant temperature. That is, the photosensitive drum 11,
The temperature control of Nos. 12 and 13 is set on each photoconductor drum by detecting the temperature of each photoconductor drum by a temperature sensor (not shown) and comparing the detected temperature with the set temperature by a microcomputer in the apparatus. This is performed by controlling ON / OFF of a heating element (not shown). Such temperature control is maintained in the operating state even when the power of the device is turned off in order to shorten the rise time of the device, and it is in the operating state unless the power is cut off by disconnecting the outlet of the device. It is in.
【００２２】ここで、図２を参照すると、感光体ドラム
１１と搬送ベルト２６との関係が示される。今、搬送ベ
ルト２６が静止状態にあるとすると、搬送ベルト２６は
感光体ドラム１１により熱影響を受け、変形する。Referring now to FIG. 2, the relationship between the photosensitive drum 11 and the conveyor belt 26 is shown. Now, assuming that the conveyor belt 26 is in a stationary state, the conveyor belt 26 is thermally affected by the photosensitive drum 11 and deforms.
【００２３】従って、もし搬送ベルト２６が静止状態に
あるとすると、静止時間Ｗにて搬送ベルト２６がＡ−Ｂ
間の部分（距離Ｌ）の領域にて変形するとした場合に、
本発明によれば、画像形成動作の終了により装置が停止
して、搬送ベルト２６が感光体ドラム１１に対して静止
した場合には、その停止時から時間Ｗ以内にて搬送ベル
ト２６が矢印方向に距離Ｌ以上移動するように構成され
る。Therefore, if the conveyor belt 26 is in a stationary state, the conveyor belt 26 will be at AB during the stationary time W.
When it is assumed that the deformation occurs in the area between the two (distance L),
According to the present invention, when the apparatus stops due to the completion of the image forming operation and the conveyor belt 26 stands still with respect to the photoconductor drum 11, the conveyor belt 26 moves in the arrow direction within the time W from the stop. Is configured to move by a distance L or more.
【００２４】このとき、上記条件を満たすのであれば、
静止した時から時間Ｗより僅かに短い時間（Ｗ−Ｃ）経
過した後に非常に速く搬送ベルト２６を移動させても良
いし、静止した直後から遅い速度で時間Ｗ以内に距離Ｌ
以上移動するようにしても良い。At this time, if the above conditions are satisfied,
The conveyor belt 26 may be moved very quickly after a lapse of a time (W-C) slightly shorter than the time W from the stationary state, or immediately after the stationary state, the conveyor belt 26 may be moved at a low speed within the time W within the distance L.
You may make it move above.
【００２５】ただ、本実施例のように複数の感光体ドラ
ムを設けた画像形成装置の場合には、上記移動した搬送
ベルト２６の距離Ｌ部分、即ちＡ−Ｂ間部分が他の感光
体ドラムの近傍のＡ−Ｂ部分相当位置に移動しないよう
にする。However, in the case of an image forming apparatus having a plurality of photosensitive drums as in the present embodiment, the distance L portion of the moved conveyor belt 26, that is, the portion between A and B is another photosensitive drum. Be careful not to move to a position corresponding to the AB portion in the vicinity of.
【００２６】このように、本発明によれば、装置停止中
においても搬送ベルト２６は感光体ドラム１１に対して
移動するように構成されるために、搬送ベルト２６の変
形が防止され、従って、搬送ベルト２６の変形に起因す
る画質の劣化及びジャムなどをなくすることができる。As described above, according to the present invention, since the conveyor belt 26 is configured to move with respect to the photosensitive drum 11 even when the apparatus is stopped, the deformation of the conveyor belt 26 is prevented, and therefore, It is possible to eliminate the deterioration of the image quality and the jam caused by the deformation of the conveyor belt 26.
【００２７】更に、好ましくは、感光体ドラム１１と搬
送ベルト２６とは互に独立的に駆動される。この構成に
よって、感光体ドラム１１を停止した状態にて搬送ベル
ト２６を移動することができる。斯る構成によれば、感
光体ドラム１１のクリーニング装置２３に対する移動が
なく、そのために感光体ドラム１１とクリーニング装置
２３のブレードの摩耗が低減され、両者の寿命を長くす
ることができるという利点もある。Further, preferably, the photosensitive drum 11 and the conveyor belt 26 are independently driven. With this configuration, the conveyor belt 26 can be moved while the photosensitive drum 11 is stopped. According to such a configuration, there is no movement of the photoconductor drum 11 with respect to the cleaning device 23, and therefore, the abrasion of the blades of the photoconductor drum 11 and the cleaning device 23 is reduced, and the life of both can be extended. is there.
【００２８】上記説明は感光体ドラム１１に関連して行
なったが、当然に他の感光体ドラム１２、１３と搬送ベ
ルト２６との間においても同様とされる。Although the above description has been made in connection with the photoconductor drum 11, naturally the same applies between the other photoconductor drums 12 and 13 and the conveyor belt 26.
【００２９】又、本発明の他の実施例によれば、図３に
示すように、搬送ベルト２６を感光体ベルト１１、１
２、１３に対して移動させる場合に、搬送ベルト２６を
感光体ベルト１１、１２、１３より離間させた状態にて
行なわれる。この実施例によれば、搬送ベルト２６を支
持している搬送手段３９は、カム手段４３により上下方
向に移動可能に構成される。Further, according to another embodiment of the present invention, as shown in FIG.
When the transfer belt 26 is moved with respect to Nos. 2 and 13, it is performed with the conveyor belt 26 separated from the photoconductor belts 11, 12, and 13. According to this embodiment, the transport means 39 supporting the transport belt 26 is configured to be vertically movable by the cam means 43.
【００３０】通常、搬送手段３９は、上方に持ち上げら
れた状態にあり、搬送ベルト２６は各感光体ドラム１
１、１２、１３に接触状態にある。一方、装置停止時に
は、搬送ベルト２６を変形防止のために移動させる時に
は、カム手段４３により搬送手段３９を下げ、搬送ベル
ト２６と感光体ドラム１１、１２、１３が完全に非接触
状態とされ、その後搬送ベルト２６が移動される。Normally, the conveying means 39 is in a state of being lifted upward, and the conveying belt 26 is provided with the photosensitive drums 1.
1, 12, 13 are in contact. On the other hand, when the conveyor belt 26 is moved to prevent deformation when the apparatus is stopped, the conveyor means 39 is lowered by the cam means 43 to bring the conveyor belt 26 and the photosensitive drums 11, 12, 13 into a completely non-contact state. After that, the transport belt 26 is moved.
【００３１】この構成によって、感光体ドラム１１、１
２、１３と搬送ベルト２６は、両者の摩擦による摩耗及
び傷の発生が防止される。With this configuration, the photosensitive drums 11, 1
The abrasion of the 2 and 13 and the conveyor belt 26 due to friction between them and the occurrence of scratches are prevented.
【００３２】[0032]
【発明の効果】以上説明したように、本発明に係る画像
形成装置は、装置停止中において転写材支持部材を像担
持体に対して移動させる構成とされるために、像担持体
からの熱の影響による転写材支持部材の変形が回避さ
れ、従って、転写材支持部材の変形に起因した画質の劣
化及びジャムをなくすることができる。又、像担持体と
転写材支持部材を独立して駆動すれば、像担持体のクリ
ーニング装置のブレードめくれを防止することができ、
更に、転写材支持部材の移動時には転写材支持部材を像
担持体から完全に非接触状態にて移動させる構成とすれ
ば、像担持体と転写材支持部材の摩耗及び傷の発生を防
止することができ、常に高品質の画像を得ることができ
る。As described above, since the image forming apparatus according to the present invention is configured to move the transfer material supporting member with respect to the image carrier while the apparatus is stopped, heat from the image carrier is not generated. The deformation of the transfer material supporting member due to the influence of 1) can be avoided, and therefore, the deterioration of the image quality and the jam caused by the deformation of the transfer material supporting member can be eliminated. Further, by independently driving the image carrier and the transfer material supporting member, it is possible to prevent the blade of the cleaning device for the image carrier from being turned over,
Further, when the transfer material support member is moved, if the transfer material support member is moved in a completely non-contact state from the image carrier, it is possible to prevent the image carrier and the transfer material support member from being worn and scratched. Therefore, high quality images can always be obtained.
【図１】本発明に係る画像形成装置の一実施例である多
色画像形成装置の概略構成図である。FIG. 1 is a schematic configuration diagram of a multicolor image forming apparatus which is an embodiment of an image forming apparatus according to the present invention.
【図２】感光体ドラムと搬送ベルトとの関係を説明する
図である。FIG. 2 is a diagram illustrating a relationship between a photosensitive drum and a conveyor belt.
【図３】本発明に係る画像形成装置の他の実施例である
多色画像形成装置の概略構成図である。FIG. 3 is a schematic configuration diagram of a multicolor image forming apparatus which is another embodiment of the image forming apparatus according to the present invention.
１１、１２、１３ 像担持体（感光体ドラム） ２６ 転写材支持部材（搬送ベル
ト） ３９ 搬送手段 ４３ カム手段 ４６ 転写材11, 12 and 13 Image carrier (photosensitive drum) 26 Transfer material support member (transport belt) 39 Conveying means 43 Cam means 46 Transfer material
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０３Ｇ 15/01 １１４ Ｚ 7818−2Ｈ Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location G03G 15/01 114 Z 7818-2H
Claims (1)
上の像担持体と、転写材を担持して該転写材を転写位置
へと搬送し、前記像担持体上の可視画像を前記転写材へ
と転写せしめる転写材支持部材とを備えた画像形成装置
において、画像形成装置が停止状態において、前記転写
材支持部材を前記像担持体に対して所定時間以内に所定
距離以上、移動せしめることを特徴とする画像形成装
置。1. At least one image carrier on which a visible image is formed, and a transfer material that carries the transfer material to a transfer position and transfers the visible image on the image carrier to the transfer material. An image forming apparatus having a transfer material support member for transferring the transfer material to the image carrier, the transfer material support member being moved with respect to the image carrier by a predetermined distance or more within a predetermined time when the image forming apparatus is stopped. A characteristic image forming apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3261111A JP2899454B2 (en) | 1991-09-12 | 1991-09-12 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3261111A JP2899454B2 (en) | 1991-09-12 | 1991-09-12 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0572913A true JPH0572913A (en) | 1993-03-26 |
| JP2899454B2 JP2899454B2 (en) | 1999-06-02 |
Family
ID=17357244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3261111A Expired - Fee Related JP2899454B2 (en) | 1991-09-12 | 1991-09-12 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899454B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0720068A2 (en) * | 1994-12-27 | 1996-07-03 | Canon Kabushiki Kaisha | Image forming apparatus with movable belt and means to position recording sheets thereon |
| US7203446B2 (en) | 2002-01-25 | 2007-04-10 | Ricoh Co., Ltd. | Image forming apparatus with improved image quality and maintenance workability |
| JP2009300682A (en) * | 2008-06-12 | 2009-12-24 | Ricoh Co Ltd | Image forming apparatus, drive control method for intermediate transfer belt, computer program, and recording medium |
-
1991
- 1991-09-12 JP JP3261111A patent/JP2899454B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0720068A2 (en) * | 1994-12-27 | 1996-07-03 | Canon Kabushiki Kaisha | Image forming apparatus with movable belt and means to position recording sheets thereon |
| EP0720068A3 (en) * | 1994-12-27 | 1999-12-08 | Canon Kabushiki Kaisha | Image forming apparatus with movable belt and means to position recording sheets thereon |
| US7203446B2 (en) | 2002-01-25 | 2007-04-10 | Ricoh Co., Ltd. | Image forming apparatus with improved image quality and maintenance workability |
| JP2009300682A (en) * | 2008-06-12 | 2009-12-24 | Ricoh Co Ltd | Image forming apparatus, drive control method for intermediate transfer belt, computer program, and recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2899454B2 (en) | 1999-06-02 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |