JP2023170403A - Transfer device and image forming apparatus - Google Patents

Transfer device and image forming apparatus Download PDF

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JP2023170403A
JP2023170403A JP2022082130A JP2022082130A JP2023170403A JP 2023170403 A JP2023170403 A JP 2023170403A JP 2022082130 A JP2022082130 A JP 2022082130A JP 2022082130 A JP2022082130 A JP 2022082130A JP 2023170403 A JP2023170403 A JP 2023170403A
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transfer device
guide member
paper
transfer
protrusion
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目黒雄二
Yuji Meguro
古屋政治
Seiji Furuya
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

To provide a transfer device that can remove untransferred toner attached to a conveyance guide on the upstream side of a transfer unit in a small space at low cost, and can be mounted in a small-sized apparatus.SOLUTION: A transfer device has an image carrier 102 on which a toner image is formed, a transfer unit 112 that is arranged opposite to the image carrier 102 and transfers the toner image to a sheet P, and a guide member 130 that is arranged on the upstream side in a sheet conveyance direction of the transfer unit 112. In conjunction with the rotation of the transfer unit, the guide member 130 vibrates in a direction to separate from the transfer unit 112 or a direction to approach the transfer unit.SELECTED DRAWING: Figure 2

Description

本発明は、転写装置及び画像形成装置に関する。 The present invention relates to a transfer device and an image forming device.

電子写真方式の画像形成装置の転写装置において、像担持体に対向した転写ローラ等の転写器とで形成した転写部に対し用紙を案内する搬送ガイドが転写器の上流側に設けられ、転写部への用紙突入姿勢を安定させるため搬送ガイドと像担持体の隙間は狭い間隔に設定されており、像担持体上の地汚れや画像濃度調整パッチから飛散した未転写トナーが搬送ガイドに付着して汚し、印刷時に用紙先端や裏面を汚すという不具合を発生させるため、定期的に手動で清掃したり、非印刷時は転写器を像担持体から離間させたり、搬送ガイドに交流電圧を印加したりして搬送ガイドに付着した未転写トナーを除去する技術が既に知られている。 In a transfer device of an electrophotographic image forming apparatus, a conveyance guide is provided on the upstream side of the transfer device to guide the paper to a transfer section formed by a transfer device such as a transfer roller facing an image carrier. The gap between the transport guide and the image carrier is set to be narrow in order to stabilize the orientation of the paper entering the paper. In order to avoid problems such as staining the leading edge and back of the paper during printing, it is necessary to periodically clean it manually, move the transfer device away from the image carrier when not printing, and apply AC voltage to the transport guide. Techniques are already known for removing untransferred toner adhering to a conveyance guide.

従来の転写装置では、搬送ガイドに交流電圧を印加するための高圧電源や、高圧電源から搬送ガイドまでを繋ぐ経路を確保するスペースが必要だったため、装置が大型化してしまい、コストも高くなっていた。 Conventional transfer devices require a high-voltage power supply to apply alternating voltage to the transport guide, and space to secure a path to connect the high-voltage power supply to the transport guide, resulting in larger equipment and higher costs. Ta.

特許文献1には、転写器の上流側に位置する搬送ガイドに付着した未転写トナーを除去するために、高圧電源を用いて搬送ガイドに交流電圧を印加し、未転写トナーの帯電極性を電気的にコントロールする転写装置が開示されている。しかし、装置の大型化のために、省スペース且つ低コストで搬送ガイドに付着した未転写トナーを除去することができない。また、このような転写装置は小型の装置に搭載可能ではない。 Patent Document 1 discloses that in order to remove untransferred toner attached to a conveyance guide located upstream of a transfer device, an AC voltage is applied to the conveyance guide using a high-voltage power supply, and the charged polarity of the untransferred toner is electrically changed. A transfer device is disclosed which is controlled by the user. However, due to the large size of the device, it is not possible to remove untransferred toner adhering to the conveyance guide in a space-saving and low-cost manner. Further, such a transfer device cannot be mounted on a small device.

そこで本発明は、省スペース且つ低コストで転写器の用紙搬送方向上流側のガイド部材に付着した未転写トナーを除去でき、小型の装置にも搭載可能な転写装置を提供することを課題とする。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a transfer device that can remove untransferred toner adhering to a guide member on the upstream side of a transfer device in the paper conveyance direction in a space-saving and low-cost manner and that can be installed in a small device. .

この課題は、トナー像が形成される像担持体、前記像担持体に対向して配置され、トナー像を用紙に転写する転写器、前記転写器の用紙搬送方向上流側に配置され、用紙をガイドするガイド部材、を有し、前記ガイド部材と前記転写器の接触又は離間により、前記ガイド部材が前記転写器から離れる方向又は向かう方向に振動する、ことを特徴とする転写装置により解決される。 This problem consists of an image carrier on which a toner image is formed, a transfer device that is placed opposite to the image carrier and that transfers the toner image onto paper, and an image carrier that is placed upstream of the transfer device in the paper transport direction to transfer the paper. The problem is solved by a transfer device having a guide member for guiding, and in which the guide member vibrates in a direction away from or toward the transfer device due to contact or separation between the guide member and the transfer device. .

省スペース且つ低コストで転写器の用紙搬送方向上流側のガイド部材に付着した未転写トナーを除去でき、小型の装置にも搭載可能な転写装置が実現される。 A transfer device is realized in which untransferred toner adhering to a guide member on the upstream side of a transfer device in the paper conveyance direction can be removed in a space-saving and low-cost manner, and which can be mounted on a small device.

本発明の一実施形態に係る画像形成装置の全体構成を示す図であるFIG. 1 is a diagram showing the overall configuration of an image forming apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る転写装置の構成を示す図である。1 is a diagram showing the configuration of a transfer device according to an embodiment of the present invention. 本発明の一実施形態に係る転写装置の画像濃度調整時の動作を示す図である。FIG. 3 is a diagram showing the operation of the transfer device according to an embodiment of the present invention during image density adjustment. 本発明の一実施形態に係る転写装置の印刷時の動作を示す図である。FIG. 3 is a diagram showing the operation of the transfer device according to an embodiment of the present invention during printing.

図1は、本発明に係る一実施形態である画像形成装置の全体構成を示す図である。
この画像形成装置は、一般的なモノクロ画像形成装置である。ブラックのプロセスカートリッジ101が、画像形成装置本体100に着脱自在に装着されており、また画像形成装置本体100内には、露光装置104、転写装置120、給紙トレイ121、定着装置140などが配置されている。
FIG. 1 is a diagram showing the overall configuration of an image forming apparatus according to an embodiment of the present invention.
This image forming apparatus is a general monochrome image forming apparatus. A black process cartridge 101 is detachably attached to the image forming apparatus main body 100, and an exposure device 104, a transfer device 120, a paper feed tray 121, a fixing device 140, etc. are arranged inside the image forming apparatus main body 100. has been done.

片面印刷時は、露光装置104により像担持体としての感光体102上に潜像が形成され、プロセスカートリッジ101内でトナー像が作像され、転写工程へ移行する。給紙トレイ121に保持されている用紙Pは、給紙ローラ122によってレジストローラ対123まで搬送され、その用紙Pの先端が感光体102と転写ローラ112のニップ位置(転写ニップ)でトナー像と一致するようレジストローラ対123によって用紙Pの送り出し量が調整され、転写ローラ112に転写バイアスが印加されることで用紙Pにトナー像が転写される。転写ニップを通過した用紙Pは転写バイアスにより帯電しているため、除電針113で除電されることで感光体102又は転写ローラ112から分離される。次いで、用紙Pは定着装置140へ搬送されて、熱と圧力により転写されたトナー像が用紙Pに融着され、排紙ローラ124により機外の排紙トレイ125に排紙される。 During single-sided printing, a latent image is formed on the photoreceptor 102 as an image carrier by the exposure device 104, a toner image is formed in the process cartridge 101, and the process moves to a transfer step. The paper P held in the paper feed tray 121 is conveyed by the paper feed roller 122 to the registration roller pair 123, and the leading edge of the paper P forms a toner image at the nip position (transfer nip) between the photoreceptor 102 and the transfer roller 112. The feeding amount of the paper P is adjusted by the registration roller pair 123 so as to match, and the toner image is transferred to the paper P by applying a transfer bias to the transfer roller 112. Since the paper P that has passed through the transfer nip is charged by the transfer bias, the charge is removed by the charge removal needle 113 and the paper P is separated from the photoreceptor 102 or the transfer roller 112 . Next, the paper P is conveyed to the fixing device 140, the transferred toner image is fused to the paper P by heat and pressure, and the paper is discharged by the paper discharge roller 124 to the paper discharge tray 125 outside the machine.

両面印刷時は、排紙ローラ124の上流側に位置する分離爪126の位置を切り替えた後に反転ローラ127を逆回転させて用紙Pを反転パス128に送り込み、分離爪126を元の位置に戻した後に排紙ローラ124を順回転させて両面パス129に用紙Pを送り込む。両面パス129に搬送された用紙Pは再びレジストローラ対123まで搬送され、以降は、片面印刷と同様のプロセスで第二面が印刷される。 During double-sided printing, after switching the position of the separation claw 126 located upstream of the paper ejection roller 124, the reversing roller 127 is reversely rotated to send the paper P to the reversing path 128, and the separation claw 126 is returned to its original position. After that, the paper discharge roller 124 is sequentially rotated to send the paper P to the double-sided path 129. The paper P conveyed to the duplex path 129 is again conveyed to the pair of registration rollers 123, and thereafter, the second side is printed in the same process as single-sided printing.

図2は、本発明の一実施形態に係る転写装置の構成を示す図である。
本実施形態における転写装置120は、トナー像が形成される像担持体としての感光体102や、感光体102に対向して配置され、トナー像を用紙Pに転写する転写器としての転写ローラ112を有する。また転写装置120は、感光体102に対向して位置する転写ローラ112の用紙搬送方向上流側に隣接して配置されているガイド部材130を有する。このような構成を有する転写装置120において、転写ローラ112の回転に連動して、ガイド部材130は回転支点130Aを中心に転写ローラ112から離れる方向又は向かう方向に振動可能又は回動可能である。ガイド部材130が振動することでガイド部材130に付着した汚れが剥離・除去される。これにより、省スペース且つ低コストで転写ローラ112の上流側のガイド部材130に付着した未転写トナーを除去できるとともに、小型の装置にも搭載可能な電子写真方式の画像形成装置用の転写装置120が提供される。
FIG. 2 is a diagram showing the configuration of a transfer device according to an embodiment of the present invention.
The transfer device 120 in this embodiment includes a photoreceptor 102 as an image carrier on which a toner image is formed, and a transfer roller 112 as a transfer device that is arranged opposite to the photoreceptor 102 and transfers the toner image onto a sheet of paper P. has. The transfer device 120 also includes a guide member 130 that is disposed adjacent to the transfer roller 112 on the upstream side in the sheet conveyance direction and that is positioned opposite to the photoreceptor 102 . In the transfer device 120 having such a configuration, in conjunction with the rotation of the transfer roller 112, the guide member 130 can vibrate or rotate about the rotation fulcrum 130A in a direction away from or toward the transfer roller 112. As the guide member 130 vibrates, dirt adhering to the guide member 130 is peeled off and removed. As a result, untransferred toner adhering to the guide member 130 on the upstream side of the transfer roller 112 can be removed in a space-saving and low-cost manner, and the transfer device 120 for an electrophotographic image forming apparatus can be installed in a small device. is provided.

ガイド部材130は、回転支点130Aに関して転写ローラ112の近くに用紙Pをガイドするガイド部を有する。ガイド部材130は、回転支点130Aを挟んだガイド部と反対側において、転写ローラ112に向かって回転するようにバネ131で付勢される一方、ガイド部の側において位置決めピン133で回転止めされ、転写ローラ112に接触しないように構成されている。位置決めピン133は、ガイド部材130の転写ローラ112との距離を規制する規制手段であり、バネ131は、ガイド部材130を転写ローラ112に向かって付勢する付勢手段である。印刷時には、ガイド部材130は位置決めピン133に接触する位置にある。また、ガイド部材130の振動振幅は、ガイド部材130が感光体102に当たらない幅に設定されている。 The guide member 130 has a guide portion that guides the paper P near the transfer roller 112 with respect to the rotational fulcrum 130A. The guide member 130 is urged by a spring 131 to rotate toward the transfer roller 112 on the side opposite to the guide part across the rotational fulcrum 130A, and is stopped from rotating by a positioning pin 133 on the guide part side. It is configured so as not to come into contact with the transfer roller 112. The positioning pin 133 is a regulating means for regulating the distance between the guide member 130 and the transfer roller 112, and the spring 131 is a biasing means for biasing the guide member 130 toward the transfer roller 112. During printing, the guide member 130 is in a position where it contacts the positioning pin 133. Furthermore, the vibration amplitude of the guide member 130 is set to a width that does not allow the guide member 130 to hit the photoreceptor 102 .

また、ガイド部材130のガイド部の長手方向両端部(すなわち、紙面手前側と奥側)には、転写ローラ112に向かって延びる突起130Bが設けられている。突起130Bに対向する転写ローラ112の軸112Aには、突起130Bに接触可能であって軸方向に垂直な平面において凹凸形状の表面を有する振動部材としての爪車(爪部材)135が、ワンウェイクラッチ(一方向クラッチ)137を介して設けられている。爪車135は転写ローラ112の軸112Aに垂直な平面において複数の爪部135Aを有している。爪車135の爪部135Aの回転径又は爪車135の先端の回転径は、転写ローラ112に向かって回転したガイド部材130の突起130Bに接触する高さを有し、転写ローラ112の外径より小さい。ワンウェイクラッチ137は、転写ローラ112が図示のように通紙時とは逆方向の反時計回りに回転したときのみ、爪車135も回転するように設定されている。 Furthermore, protrusions 130B extending toward the transfer roller 112 are provided at both ends of the guide portion of the guide member 130 in the longitudinal direction (that is, on the front side and the back side in the drawing). On the shaft 112A of the transfer roller 112 facing the protrusion 130B, a ratchet wheel (claw member) 135 as a vibrating member that is capable of contacting the protrusion 130B and has an uneven surface in a plane perpendicular to the axial direction is attached to the one-way clutch. (One-way clutch) 137 is provided. The ratchet wheel 135 has a plurality of pawls 135A in a plane perpendicular to the axis 112A of the transfer roller 112. The rotational diameter of the claw portion 135A of the ratchet wheel 135 or the rotational diameter of the tip of the ratchet wheel 135 has a height such that it contacts the protrusion 130B of the guide member 130 rotated toward the transfer roller 112, and the outer diameter of the transfer roller 112 smaller. The one-way clutch 137 is set so that the ratchet wheel 135 also rotates only when the transfer roller 112 rotates counterclockwise, as shown, in the opposite direction to the direction of paper passing.

図2に示すように、非作像時に感光体102が時計回りに回転されると、転写ローラ112が感光体102に連れ回って反時計回りに回転し、ワンウェイクラッチ137の作用により爪車135も反時計回りに回転する。よって、爪車135の回転により爪車135の爪部135Aがガイド部材130の突起130Bに接触したり離れたりすることで、ガイド部材130を回転支点130Aを支点に振動させ、それによりガイド部材130に付着していた未転写トナーを剥離・除去することができる。 As shown in FIG. 2, when the photoconductor 102 is rotated clockwise during non-image formation, the transfer roller 112 rotates counterclockwise along with the photoconductor 102, and the ratchet wheel 135 is rotated by the action of the one-way clutch 137. also rotates counterclockwise. Therefore, as the ratchet wheel 135 rotates, the claw portion 135A of the ratchet wheel 135 contacts or separates from the protrusion 130B of the guide member 130, causing the guide member 130 to vibrate about the rotation fulcrum 130A. Untransferred toner attached to the surface can be peeled off and removed.

そして、ガイド部材130の振動により除去された未転写トナーは静電気力により感光体102に吸着され、感光体102に設けられたクリーニング部材により回収される。 The untransferred toner removed by the vibration of the guide member 130 is attracted to the photoreceptor 102 by electrostatic force, and is collected by a cleaning member provided on the photoreceptor 102.

図3は、本発明の一実施形態に係る転写装置の画像濃度調整時の動作を示す図である。
図示のように、画像濃度調整時に、感光体102上に作像された調整パッチの一部が未転写トナーとして飛散し、ガイド部材130の先端に付着することがある。このとき、感光体102は図示のように反時計回りに回転し、転写ローラ112はこれに連れ回って時計回りに回転するが、爪車135はワンウェイクラッチ137の作用で空回りし、回転しない。したがって、爪車135の爪部135Aはガイド部材130の突起130Bに接触せず、ガイド部材130は位置決めピン133に接触した位置にあり、振動しない。
FIG. 3 is a diagram showing the operation of the transfer device according to an embodiment of the present invention during image density adjustment.
As shown in the figure, during image density adjustment, a portion of the adjustment patch imaged on the photoreceptor 102 may scatter as untransferred toner and adhere to the tip of the guide member 130. At this time, the photoreceptor 102 rotates counterclockwise as shown, and the transfer roller 112 rotates clockwise along with this, but the ratchet wheel 135 idles due to the action of the one-way clutch 137 and does not rotate. Therefore, the claw portion 135A of the ratchet wheel 135 does not contact the protrusion 130B of the guide member 130, and the guide member 130 is in contact with the positioning pin 133, and does not vibrate.

図4は、本発明の一実施形態に係る転写装置の印刷時の動作を示す図である。
感光体102上に作成されたトナー像の大部分は、転写ニップで用紙Pの表面に転写されるが、パワーオンイニシャライズ時や紙間などで感光体102上の地汚れトナーが飛散し、ガイド部材130の先端に付着することがある。すると図示のように、印刷時に、ガイド部材130の先端に付着した未転写トナーが、ガイド部材130を案内される用紙Pの裏面に付着し、用紙Pが汚れることがある。このとき、感光体102は図示のように反時計回りに回転し、転写ローラ112はこれに連れ回って時計回りに回転するが、爪車135はワンウェイクラッチ137の作用で空回りし、回転しない。したがって、爪車135の爪部135Aはガイド部材130の突起130Bに接触せず、ガイド部材130は位置決めピン133に接触した位置にあり、振動しない。
FIG. 4 is a diagram showing the operation of the transfer device according to an embodiment of the present invention during printing.
Most of the toner image created on the photoreceptor 102 is transferred to the surface of the paper P in the transfer nip, but the toner on the photoreceptor 102 scatters during power-on initialization or between sheets, causing the guide. It may adhere to the tip of the member 130. Then, as shown in the figure, during printing, untransferred toner adhering to the tip of the guide member 130 may adhere to the back surface of the paper P guided by the guide member 130, thereby staining the paper P. At this time, the photoreceptor 102 rotates counterclockwise as shown, and the transfer roller 112 rotates clockwise along with this, but the ratchet wheel 135 idles due to the action of the one-way clutch 137 and does not rotate. Therefore, the claw portion 135A of the ratchet wheel 135 does not contact the protrusion 130B of the guide member 130, and the guide member 130 is in contact with the positioning pin 133, and does not vibrate.

本発明の態様は、例えば、以下のとおりである。
<1> トナー像が形成される像担持体、
前記像担持体に対向して配置され、トナー像を用紙に転写する転写器、
前記転写器の用紙搬送方向上流側に配置され、用紙をガイドするガイド部材、を有し、
前記転写器の回転に連動して、前記ガイド部材が前記転写器から離れる方向又は向かう方向に振動する、ことを特徴とする転写装置である。
<2> 突起が前記ガイド部材の長手方向端部に設けられ、
前記突起に対向する前記転写器の軸に、前記突起に接触可能であって凹凸形状の表面を有する振動部材が配置され、
前記ガイド部材の前記突起と前記転写器の前記振動部材の接触又は離間により、前記ガイド部材が振動する前記<1>に記載の転写装置である。
<3> 前記振動部材は複数の爪部を有する爪部材を有し、当該爪部材の回転径は、前記ガイド部材の前記突起に接触する高さを有し、前記転写器の外径より小さい前記<2>に記載の転写装置である。
<4> 前記振動部材はワンウェイクラッチを介して前記転写器の軸に設けられており、
前記ワンウェイクラッチにより、前記転写器が通紙時とは逆方向に回転するときのみ、前記振動部材も回転する前記<2>又は<3>に記載の転写装置である。
<5> 前記ガイド部材の振動振幅は、前記ガイド部材が前記像担持体に当たらない幅に設定される前記<1>~<4>のいずれか一項に記載の転写装置である。
<6> 前記ガイド部材の前記転写器との距離を規制する規制手段、及び
前記ガイド部材を前記転写器に向かって付勢する付勢手段、を有する前記<1>~<5>のいずれか一項に記載の転写装置である。
<7> 前記ガイド部材の振動により除去された未転写トナーが前記像担持体に付着され、回収される前記<1>~<6>のいずれか一項に記載の転写装置である。
<8> 前記<1>~<7>のいずれか一項に記載の転写装置を有する画像形成装置である。
Aspects of the present invention are, for example, as follows.
<1> An image carrier on which a toner image is formed;
a transfer device arranged to face the image carrier and transfer the toner image onto paper;
a guide member disposed on the upstream side of the transfer device in the paper conveyance direction to guide the paper;
The transfer device is characterized in that the guide member vibrates in a direction away from or toward the transfer device in conjunction with rotation of the transfer device.
<2> A protrusion is provided at a longitudinal end of the guide member,
A vibrating member capable of contacting the protrusion and having an uneven surface is disposed on a shaft of the transfer device facing the protrusion,
The transfer device according to <1>, wherein the guide member vibrates due to contact or separation between the protrusion of the guide member and the vibrating member of the transfer device.
<3> The vibrating member has a claw member having a plurality of claw parts, and the rotation diameter of the claw member has a height that contacts the protrusion of the guide member and is smaller than the outer diameter of the transfer device. The transfer device according to <2> above.
<4> The vibrating member is provided on the shaft of the transfer device via a one-way clutch,
The transfer device according to <2> or <3>, wherein the one-way clutch rotates the vibrating member only when the transfer device rotates in a direction opposite to the direction in which paper is passed.
<5> The transfer device according to any one of <1> to <4>, wherein the vibration amplitude of the guide member is set to a width such that the guide member does not hit the image carrier.
<6> Any one of <1> to <5> above, comprising: a regulating means for regulating the distance between the guide member and the transfer device; and a biasing means for biasing the guide member toward the transfer device. The transfer device according to item 1.
<7> The transfer device according to any one of <1> to <6>, wherein untransferred toner removed by vibration of the guide member is attached to the image carrier and collected.
<8> An image forming apparatus including the transfer device according to any one of <1> to <7>.

102 感光体(像担持体)
112 転写ローラ(転写器)
130 ガイド部材
130B 突起
131 バネ(付勢手段)
133 位置決めピン(規制手段)
135 爪車(振動部材、爪部材)
135A 爪部
137 ワンウェイクラッチ
P 用紙
102 Photoreceptor (image carrier)
112 Transfer roller (transfer device)
130 Guide member 130B Protrusion 131 Spring (biasing means)
133 Positioning pin (regulating means)
135 Ratchet wheel (vibrating member, pawl member)
135A Claw portion 137 One-way clutch P Paper

特開平07-306600号公報Japanese Patent Application Publication No. 07-306600

Claims (8)

トナー像が形成される像担持体、
前記像担持体に対向して配置され、トナー像を用紙に転写する転写器、
前記転写器の用紙搬送方向上流側に配置され、用紙をガイドするガイド部材、を有し、
前記転写器の回転に連動して、前記ガイド部材が前記転写器から離れる方向又は向かう方向に振動する、ことを特徴とする転写装置。
an image carrier on which a toner image is formed;
a transfer device arranged to face the image carrier and transfer the toner image onto paper;
a guide member disposed on the upstream side of the transfer device in the paper conveyance direction to guide the paper;
A transfer device, wherein the guide member vibrates in a direction away from or toward the transfer device in conjunction with rotation of the transfer device.
突起が前記ガイド部材の長手方向端部に設けられ、
前記突起に対向する前記転写器の軸に、前記突起に接触可能であって凹凸形状の表面を有する振動部材が配置され、
前記ガイド部材の前記突起と前記転写器の前記振動部材の接触又は離間により、前記ガイド部材が振動する、ことを特徴とする請求項1に記載の転写装置。
a protrusion is provided at a longitudinal end of the guide member;
A vibrating member capable of contacting the protrusion and having an uneven surface is disposed on a shaft of the transfer device facing the protrusion,
The transfer device according to claim 1, wherein the guide member vibrates due to contact or separation between the protrusion of the guide member and the vibrating member of the transfer device.
前記振動部材は複数の爪部を有する爪部材を有し、当該爪部材の回転径は、前記ガイド部材の前記突起に接触する高さを有し、前記転写器の外径より小さい、ことを特徴とする請求項2に記載の転写装置。 The vibration member has a claw member having a plurality of claw parts, and the rotation diameter of the claw member has a height that contacts the protrusion of the guide member and is smaller than the outer diameter of the transfer device. The transfer device according to claim 2, characterized in that: 前記振動部材はワンウェイクラッチを介して前記転写器の軸に設けられており、
前記ワンウェイクラッチにより、前記転写器が通紙時とは逆方向に回転するときのみ、前記振動部材も回転する、ことを特徴とする請求項2又は3に記載の転写装置。
The vibration member is provided on the shaft of the transfer device via a one-way clutch,
4. The transfer device according to claim 2, wherein the one-way clutch causes the vibrating member to rotate only when the transfer device rotates in a direction opposite to the direction in which paper is passed.
前記ガイド部材の振動振幅は、前記ガイド部材が前記像担持体に当たらない幅に設定される、ことを特徴とする請求項1~3のいずれか一項に記載の転写装置。 4. The transfer device according to claim 1, wherein the vibration amplitude of the guide member is set to a width such that the guide member does not hit the image carrier. 前記ガイド部材の前記転写器との距離を規制する規制手段、及び
前記ガイド部材を前記転写器に向かって付勢する付勢手段、を有する、ことを特徴とする請求項1~3のいずれか一項に記載の転写装置。
Any one of claims 1 to 3, further comprising a regulating means for regulating a distance between the guide member and the transfer device, and a biasing means for biasing the guide member toward the transfer device. The transfer device according to item 1.
前記ガイド部材の振動により除去された未転写トナーが前記像担持体に付着され、回収される、ことを特徴とする請求項1~3のいずれか一項に記載の転写装置。 4. The transfer device according to claim 1, wherein untransferred toner removed by vibration of the guide member is attached to the image carrier and collected. 請求項1~3のいずれか一項に記載の転写装置を有する画像形成装置。
An image forming apparatus comprising the transfer device according to claim 1.
JP2022082130A 2022-05-19 2022-05-19 Transfer device and image forming apparatus Pending JP2023170403A (en)

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