JP2004279641A - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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Publication number
JP2004279641A
JP2004279641A JP2003069680A JP2003069680A JP2004279641A JP 2004279641 A JP2004279641 A JP 2004279641A JP 2003069680 A JP2003069680 A JP 2003069680A JP 2003069680 A JP2003069680 A JP 2003069680A JP 2004279641 A JP2004279641 A JP 2004279641A
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JP
Japan
Prior art keywords
shaft
axis
moving member
rotating
rotating member
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.)
Pending
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JP2003069680A
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Japanese (ja)
Inventor
Hiroshi Ono
博司 小野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
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Ricoh Co Ltd
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Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2003069680A priority Critical patent/JP2004279641A/en
Priority to US10/798,425 priority patent/US7121205B2/en
Publication of JP2004279641A publication Critical patent/JP2004279641A/en
Priority to US11/492,779 priority patent/US7401555B2/en
Pending legal-status Critical Current

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  • Electrophotography Configuration And Component (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus in which rotation transmitting accuracy is enhanced and also the coupling of shafts is facilitated. <P>SOLUTION: A coupling tool 40 has a rotating member 41 screwed and fixed on a driven shaft 33 and integrally rotating with the shaft 33, and a moving member 42 moving in parallel with the shaft center of a driving shaft 34 while rotating in the outer peripheral direction of the rotating member. An inclined surface 41b is formed on the outer periphery of the rotating member 41. When the moving member 42 moves in a direction (b), it applies pressure to the inclined surface 41b of the rotating member, and the parallel surface 41a of the rotating member 41 abuts on the circumferential surface 34b of the driving shaft 34 by the pressure from the moving member 42 and grips the driving shaft 34. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、画像形成装置に関するものであり、より詳しくは、回転伝達精度を高めるとともに軸の連結を容易にすることができる画像形成装置に関するものである。
【０００２】
【従来の技術】
従来の画像形成装置として、モーターのカップリング手段を画像形成装置本体にビス止めすることによって、モーターに設けられたカップリング手段の回転中心と感光体ドラムの回転軸の回転中心とが偏心することを回避し、モーターの回転を感光体ドラムに伝達する際の回転伝達精度を高めるタンデム型フルカラー画像形成装置（特許文献１）。
【０００３】
【特許文献１】
特開２００２‐３５７９８６号公報（段落［００１２］ないし［００１５］、図９）
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来のタンデム型フルカラー画像形成装置においては、モーターのカップリング手段を画像形成装置本体にビス止めする必要があるので、モーターと感光体ドラムとを容易に連結することができないという問題があった。
【０００５】
そこで、本発明は、回転伝達精度を高めるとともに軸の連結を容易にすることができる画像形成装置を提供するものである。
【０００６】
【課題を解決するための手段】
上記課題を解決するため、本発明に係る画像形成装置は、第１の軸と第２の軸とを連結する連結具を備え、前記第１の軸および前記第２の軸の一方は、原動軸であり、他方は、静電潜像が形成される像担持体に設けられた被動軸であって、前記連結具は、前記第２の軸の軸心に平行な平行面が形成され前記第１の軸と一体的に回転する回転部材と、前記回転部材の外周面上を前記第２の軸の軸心と平行に移動する移動部材とを有し、前記移動部材は、前記回転部材に対する圧力を変化させながら前記第２の軸の軸心と平行に移動し、前記回転部材の平行面は、前記移動部材からの圧力によって前記第２の軸の外周面に当接し前記第２の軸を把持することを特徴とする構成を有している。
【０００７】
この構成によれば、第１の軸と一体的に回転する回転部材に形成された平行面が第２の軸を把持するので、第１の軸および第２の軸は互いの軸心が一致した状態を保って連結され、回転伝達精度を高めることができる。また、移動部材を第２の軸の軸心と平行に移動させれば、第１の軸および第２の軸は互いの軸心が一致した状態を保って連結されるので、第１の軸と第２の軸との連結を容易にすることができる。
【０００８】
本発明に係る画像形成装置においては、前記回転部材に螺合し、前記回転部材の外周方向に回転しながら前記第２の軸の軸心と平行に移動することを特徴とする構成を有している。
【０００９】
この構成によれば、移動部材が回転部材に螺合しているので、第１の軸および第２の軸の連結が解除される方向に移動部材が移動することが少なくなり、第１の軸と第２の軸との連結を確実にすることができる。
【００１０】
本発明に係る画像形成装置においては、前記移動部材は、前記原動軸の正回転方向と同一の方向に回転しながら前記回転部材に対する圧力を増加するように前記回転部材と螺合することを特徴とする構成を有している。ここで、「螺合」とは、螺子によって係合することをいう。
【００１１】
この構成によれば、回転部材に対する圧力を増加する移動部材の回転方向と原動軸の正回転方向とが一致しているので、原動軸が正回転していれば、第１の軸および第２の軸の連結が解除される方向に移動部材が回転することがなくなり、第１の軸と第２の軸との連結をより確実にすることができる。
【００１２】
本発明に係る画像形成装置においては、前記第２の軸の外周には、突出する突出部が形成され、前記移動部材には、前記突出部と嵌め合う溝部が形成されていることを特徴とする構成を有している。
【００１３】
この構成によれば、第２の軸の突出部が移動部材の溝部に嵌め込まれるので、第１の軸および第２の軸の連結が解除される方向に移動部材が回転することがなくなり、第１の軸と第２の軸との連結をより確実にすることができる。
【００１４】
【発明の実施の形態】
図１ないし図３を参照して本発明に係る画像形成装置の好ましい実施の形態を説明する。図１に示すように、画像形成システム１は、シートを搬送する搬送装置１０と、シートを給紙する給紙装置２０と、搬送装置１０によって搬送されたシート上の画像を読み込み、読み込んだ画像を給紙装置２０によって給紙されたシートに形成する画像形成装置３０とを備える。
【００１５】
画像形成装置２０は、搬送装置１０によって搬送されたシート上の画像を光線として出力する露光部３１と、露光部３１からの光線によって静電画像が形成される複数の感光体ドラム３２とを有し、各感光体ドラム３２上の静電画像にブラックトナー、シアントナー、マゼンダトナーおよびイエロトナーの何れかが乗せられ、各感光体ドラム３２上にトナー画像が形成される。各トナー画像は、給送装置１０によって給送されたシートに重ねて転写される。ここで、感光体ドラム３２は、静電潜像が形成される像担持体としての機能を有している。
【００１６】
図２に示すように、感光体ドラム３２には被動軸３３が設けられており、被動軸３３は、図示しないモータに設けられた原動軸３４に連結具４０によって連結されている。本実施の形態では、被動軸３３は第１の軸であり、原動軸３４は第２の軸であるとして説明しているが、被動軸３３が第２の軸であり、原動軸３４が第１の軸である場合を妨げるものではない。
【００１７】
図２に示すように、連結具４０は、被動軸３３に螺子止め固定され被動軸３３と一体的に回転する回転部材４１と、回転部材の外周方向に回転しながら原動軸３４の軸心と平行に移動する移動部材４２とを有する。
【００１８】
図３に示すように、回転部材４２には、原動軸３４の軸心３４ａに平行な平行面４１ａが形成され、各平行面４１ａは、原動軸３４の軸心３４ａに関して対称の関係にある。
【００１９】
また、回転部材４２の外周には、傾斜面４１ｂが形成されている。移動部材４２がｂ方向に移動すると、移動部材４２が固定部材の傾斜面４１ｂに圧力を加えて、回転部材４１の平行面４１ａは、移動部材４２からの圧力によって原動軸３４の外周面３４ｂに当接し原動軸３４を把持する。
【００２０】
また、移動部材４２が回転部材４１の外周上をａ方向に回転するとｂ方向に移動し、さらに、原動軸３４の正回転方向と移動部材４２の回転方向ａとが一致するように、回転部材４１および移動部材４２はねじ切り成形されて、回転部材４１には、螺子部４１ｃが形成され、移動部材４２には、回転部材４１の螺子部４１ｃに係合する対螺子部４２ａが形成されている。ここで、原動軸３４の正回転方向とは、露光部３１によって感光体ドラム３２を露光する際に原動軸３４が回転する方向である。
【００２１】
また、原動軸３４の外周には、突出する突出部３４ｃが形成されている。移動部材４２には、突出部３４ｃと嵌め合う溝部４２ｂが形成されている。移動部材４２が回転しようとすると、原動軸３４の突出部３４ｃが移動部材４２の溝部４２ｂに当接し、移動部材４２の回転が制限される。
【００２２】
なお、本実施の形態では、連結具４０の構成が詳細に示されているが、要するに、連結具４０はいわゆるコレットチャック機構からなるものであれば足りる。
【００２３】
以上本実施の形態によれば、被動軸３３と一体的に回転する回転部材４１に形成された平行面４１ａが原動軸３４を把持するので、被動軸３３および原動軸３４は互いの軸心３３ａ、３４ａが一致した状態を保って連結され、回転伝達精度を高めることができる。特に、１枚のシートに対して複数色のトナーを重ねて転写するタンデム形式画像形成装置では、回転伝達精度を高めることによって、トナーが正確に重ねられるので、画像品質を向上させることができる。
【００２４】
また、本実施の形態によれば、移動部材４２を原動軸３４の軸心３４ａと平行に移動させれば、被動軸３３および原動軸３４は互いの軸心３３ａ、３４ａが一致した状態を保って連結されるので、被動軸３３と原動軸３４との連結を容易にすることができる。
【００２５】
また、本実施の形態によれば、回転部材４１の螺子部４１ｃと移動部材４２の対螺子部４２ａに係合しているので、被動軸３３および原動軸３４の連結が解除されるｃ方向に移動部材４２が移動することが少なくなり、被動軸３３と原動軸３４との連結を確実にすることができる。
【００２６】
また、本実施の形態によれば、原動軸３４の正回転方向が移動部材４２の回転方向ａと一致しているので、原動軸３４が正回転している、すなわち、感光体ドラム３２が露光されている間、被動軸３３および原動軸３４の連結が解除されるｃ方向に移動部材４２が回転することがなくなり、被動軸３３と原動軸３４との連結をより確実にすることができる。
【００２７】
また、本実施の形態によれば、原動軸３４の突出部３４ｃが移動部材４２の溝部４２ｂに嵌め込まれるので、被動軸３３および原動軸３４の連結が解除されるｃ方向に移動部材４２が回転することがなくなり、被動軸３３と原動軸３４との連結をより確実にすることができる。
【００２８】
【発明の効果】
本発明によれば、第１の軸と一体的に回転する回転部材に形成された平行面が第２の軸を把持するので、第１の軸および第２の軸は互いの軸心が一致した状態を保って連結され、回転伝達精度を高めることができる。また、移動部材を第２の軸の軸心と平行に移動させれば、第１の軸および第２の軸は互いの軸心が一致した状態を保って連結されるので、第１の軸と第２の軸との連結を容易にすることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態である画像形成装置が設けられた画像形成システムの構成を示す正面図
【図２】連結具の構成を示す斜視図
【図３】連結具の構成を示す断面図
【符号の説明】
３２ 感光体ドラム（像担持体）
３３ 被動軸（第１の軸）
３３ａ 軸心
３４ 原動軸（第２の軸）
３４ａ 軸心
３４ｂ 外周面
３４ｃ 突出部
４０ 連結具
４１ 回転部材
４１ａ 平行面
４１ｃ 螺子部
４２ 移動部材
４２ａ 対螺子部
４２ｂ 溝部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image forming apparatus, and more particularly, to an image forming apparatus capable of improving rotation transmission accuracy and facilitating shaft connection.
[0002]
[Prior art]
As a conventional image forming apparatus, the center of rotation of the coupling unit provided on the motor and the center of rotation of the rotating shaft of the photosensitive drum are eccentric by screwing the coupling means of the motor to the main body of the image forming apparatus. A tandem-type full-color image forming apparatus that improves the rotation transmission accuracy when transmitting rotation of a motor to a photosensitive drum while avoiding the problem (Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-357986 A (paragraphs [0012] to [0015], FIG. 9)
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional tandem type full-color image forming apparatus, since the coupling means of the motor needs to be screwed to the image forming apparatus main body, there is a problem that the motor and the photosensitive drum cannot be easily connected. there were.
[0005]
Accordingly, the present invention provides an image forming apparatus capable of improving rotation transmission accuracy and facilitating shaft connection.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, an image forming apparatus according to the present invention includes a connecting tool that connects a first shaft and a second shaft, and one of the first shaft and the second shaft is a prime mover. Axis, and the other is a driven axis provided on the image carrier on which an electrostatic latent image is formed, wherein the connecting tool has a parallel surface formed parallel to the axis of the second axis. A rotating member that rotates integrally with the first shaft; and a moving member that moves on the outer peripheral surface of the rotating member in parallel with the axis of the second shaft, wherein the moving member includes the rotating member. Moving in parallel with the axis of the second shaft while changing the pressure with respect to the second shaft, and the parallel surface of the rotating member abuts on the outer peripheral surface of the second shaft due to the pressure from the moving member, and It has a configuration characterized by gripping a shaft.
[0007]
According to this configuration, since the parallel surface formed on the rotating member that rotates integrally with the first axis grips the second axis, the first axis and the second axis have the same axis. It is connected while maintaining the state, and the rotation transmission accuracy can be improved. Further, if the moving member is moved in parallel with the axis of the second axis, the first axis and the second axis are connected while their axes are aligned with each other. And the second shaft can be easily connected.
[0008]
The image forming apparatus according to the present invention has a configuration characterized in that the image forming apparatus is screwed to the rotating member and moves parallel to the axis of the second shaft while rotating in the outer circumferential direction of the rotating member. ing.
[0009]
According to this configuration, since the moving member is screwed to the rotating member, the moving member is less likely to move in a direction in which the first shaft and the second shaft are disconnected from each other, and the first shaft And the second shaft can be reliably connected.
[0010]
In the image forming apparatus according to the present invention, the moving member is screwed with the rotating member so as to increase the pressure on the rotating member while rotating in the same direction as the forward rotation direction of the driving shaft. It has a configuration that Here, “screw engagement” means engaging with a screw.
[0011]
According to this configuration, since the rotation direction of the moving member that increases the pressure on the rotation member coincides with the forward rotation direction of the driving shaft, if the driving shaft is rotating forward, the first shaft and the second shaft are rotated. The moving member does not rotate in the direction in which the connection of the first shaft is released, and the connection between the first shaft and the second shaft can be further ensured.
[0012]
The image forming apparatus according to the present invention is characterized in that a projecting portion is formed on an outer periphery of the second shaft, and a groove that fits with the projecting portion is formed on the moving member. Configuration.
[0013]
According to this configuration, since the protrusion of the second shaft is fitted into the groove of the moving member, the moving member does not rotate in the direction in which the connection between the first shaft and the second shaft is released. The connection between the first shaft and the second shaft can be further ensured.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
A preferred embodiment of an image forming apparatus according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the image forming system 1 reads a transport device 10 that transports a sheet, a paper feed device 20 that feeds a sheet, and an image on a sheet that is transported by the transport device 10, and reads the read image. And an image forming apparatus 30 that forms the image on a sheet fed by the sheet feeding device 20.
[0015]
The image forming apparatus 20 includes an exposure unit 31 that outputs an image on a sheet conveyed by the conveyance device 10 as a light beam, and a plurality of photosensitive drums 32 on which an electrostatic image is formed by the light beam from the exposure unit 31. Then, any one of black toner, cyan toner, magenta toner and yellow toner is put on the electrostatic image on each photoconductor drum 32, and a toner image is formed on each photoconductor drum 32. Each toner image is superimposed and transferred onto a sheet fed by the feeding device 10. Here, the photosensitive drum 32 has a function as an image carrier on which an electrostatic latent image is formed.
[0016]
As shown in FIG. 2, a driven shaft 33 is provided on the photosensitive drum 32, and the driven shaft 33 is connected to a driving shaft 34 provided on a motor (not shown) by a connector 40. In the present embodiment, it is described that the driven shaft 33 is the first shaft and the driven shaft 34 is the second shaft. However, the driven shaft 33 is the second shaft, and the driven shaft 34 is the second shaft. It does not prevent the case of one axis.
[0017]
As shown in FIG. 2, the connecting tool 40 is fixedly screwed to the driven shaft 33 and is rotated integrally with the driven shaft 33. And a moving member 42 that moves in parallel.
[0018]
As shown in FIG. 3, a parallel surface 41 a parallel to the axis 34 a of the driving shaft 34 is formed on the rotating member 42, and each parallel surface 41 a is symmetrical with respect to the axis 34 a of the driving shaft 34.
[0019]
An inclined surface 41b is formed on the outer periphery of the rotating member 42. When the moving member 42 moves in the direction b, the moving member 42 applies pressure to the inclined surface 41b of the fixed member, and the parallel surface 41a of the rotating member 41 is moved to the outer peripheral surface 34b of the driving shaft 34 by the pressure from the moving member 42. The driving shaft 34 is held in contact with the driving shaft 34.
[0020]
When the moving member 42 rotates on the outer periphery of the rotating member 41 in the direction a, the moving member 42 moves in the direction b. Further, the rotating member 42 is moved so that the forward rotation direction of the driving shaft 34 and the rotating direction a of the moving member 42 coincide. The screw member 41 and the moving member 42 are formed by threading, and the rotating member 41 is formed with a screw portion 41c, and the moving member 42 is formed with a pair of screw portions 42a that engage with the screw portion 41c of the rotating member 41. . Here, the forward rotation direction of the driving shaft 34 is a direction in which the driving shaft 34 rotates when exposing the photosensitive drum 32 by the exposure unit 31.
[0021]
A protruding portion 34 c is formed on the outer periphery of the driving shaft 34. The moving member 42 is formed with a groove 42b that fits with the protrusion 34c. When the moving member 42 tries to rotate, the protrusion 34c of the driving shaft 34 comes into contact with the groove 42b of the moving member 42, and the rotation of the moving member 42 is restricted.
[0022]
In the present embodiment, the configuration of the connecting tool 40 is shown in detail, but in short, it is sufficient that the connecting tool 40 includes a so-called collet chuck mechanism.
[0023]
As described above, according to the present embodiment, since the parallel surface 41a formed on the rotating member 41 that rotates integrally with the driven shaft 33 grips the driving shaft 34, the driven shaft 33 and the driving shaft 34 , 34a are connected while maintaining the same state, and the rotation transmission accuracy can be improved. Particularly, in a tandem type image forming apparatus in which a plurality of color toners are transferred onto one sheet in a superimposed manner, the toner is accurately superimposed by increasing the rotation transmission accuracy, so that the image quality can be improved.
[0024]
Further, according to the present embodiment, if the moving member 42 is moved in parallel with the axis 34a of the driving shaft 34, the driven shaft 33 and the driving shaft 34 maintain a state where the axes 33a and 34a coincide with each other. Therefore, the connection between the driven shaft 33 and the driving shaft 34 can be facilitated.
[0025]
Further, according to the present embodiment, since the threaded portion 41c of the rotating member 41 and the paired threaded portion 42a of the moving member 42 are engaged, in the direction c in which the connection between the driven shaft 33 and the driving shaft 34 is released. The movement of the moving member 42 is reduced, and the connection between the driven shaft 33 and the driving shaft 34 can be ensured.
[0026]
Further, according to the present embodiment, since the forward rotation direction of the driving shaft 34 matches the rotation direction a of the moving member 42, the driving shaft 34 is rotating forward, that is, the photosensitive drum 32 is exposed. During this operation, the moving member 42 does not rotate in the direction c in which the connection between the driven shaft 33 and the driving shaft 34 is released, and the connection between the driven shaft 33 and the driving shaft 34 can be further ensured.
[0027]
Further, according to the present embodiment, since the projection 34c of the driving shaft 34 is fitted into the groove 42b of the moving member 42, the moving member 42 rotates in the direction c where the connection between the driven shaft 33 and the driving shaft 34 is released. And the connection between the driven shaft 33 and the driving shaft 34 can be further ensured.
[0028]
【The invention's effect】
According to the present invention, since the parallel surface formed on the rotating member that rotates integrally with the first axis grips the second axis, the first axis and the second axis have the same axis. It is connected while maintaining the state, and the rotation transmission accuracy can be improved. Further, if the moving member is moved in parallel with the axis of the second axis, the first axis and the second axis are connected while their axes are aligned with each other. And the second shaft can be easily connected.
[Brief description of the drawings]
FIG. 1 is a front view illustrating a configuration of an image forming system provided with an image forming apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view illustrating a configuration of a coupling. FIG. Cross-sectional view shown [Explanation of reference numerals]
32 Photoconductor drum (image carrier)
33 driven shaft (first shaft)
33a Shaft center 34 Drive shaft (second shaft)
34a shaft center 34b outer peripheral surface 34c projecting portion 40 connecting member 41 rotating member 41a parallel surface 41c screw portion 42 moving member 42a paired screw portion 42b groove portion

Claims (4)

第１の軸と第２の軸とを連結する連結具を備え、
前記第１の軸および前記第２の軸の一方は、原動軸であり、他方は、静電潜像が形成される像担持体に設けられた被動軸であって、
前記連結具は、前記第２の軸の軸心に平行な平行面が形成され前記第１の軸と一体的に回転する回転部材と、前記回転部材の外周面上を前記第２の軸の軸心と平行に移動する移動部材とを有し、
前記移動部材は、前記回転部材に対する圧力を変化させながら前記第２の軸の軸心と平行に移動し、
前記回転部材の平行面は、前記移動部材からの圧力によって前記第２の軸の外周面に当接し前記第２の軸を把持することを特徴とする画像形成装置。A connection tool for connecting the first shaft and the second shaft,
One of the first axis and the second axis is a driving axis, and the other is a driven axis provided on an image carrier on which an electrostatic latent image is formed,
A rotating member having a parallel surface formed in parallel with an axis of the second shaft and rotating integrally with the first shaft; and A moving member that moves parallel to the axis,
The moving member moves parallel to the axis of the second shaft while changing the pressure on the rotating member,
The image forming apparatus according to claim 1, wherein the parallel surface of the rotating member abuts on the outer peripheral surface of the second shaft by pressure from the moving member to grip the second shaft. 前記移動部材は、前記回転部材に螺合し、前記回転部材の外周方向に回転しながら前記第２の軸の軸心と平行に移動することを特徴とする請求項１に記載の画像形成装置。2. The image forming apparatus according to claim 1, wherein the moving member is screwed to the rotating member, and moves parallel to an axis of the second shaft while rotating in an outer circumferential direction of the rotating member. 3. . 前記移動部材は、前記原動軸の正回転方向と同一の方向に回転しながら前記回転部材に対する圧力を増加するように前記回転部材と螺合することを特徴とする請求項２に記載の画像形成装置。3. The image forming apparatus according to claim 2, wherein the moving member is screwed with the rotating member so as to increase a pressure on the rotating member while rotating in the same direction as a forward rotation direction of the driving shaft. 4. apparatus. 前記第２の軸の外周には、突出する突出部が形成され、
前記移動部材には、前記突出部と嵌め合う溝部が形成されていることを特徴とする請求項２または請求項３に記載の画像形成装置。A protruding portion is formed on an outer periphery of the second shaft,
The image forming apparatus according to claim 2, wherein the moving member is formed with a groove that fits with the protrusion.
JP2003069680A 2003-03-14 2003-03-14 Image forming apparatus Pending JP2004279641A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003069680A JP2004279641A (en) 2003-03-14 2003-03-14 Image forming apparatus
US10/798,425 US7121205B2 (en) 2003-03-14 2004-03-12 Device for and method of coupling shafts, image formation apparatus, process cartridge, and belt unit
US11/492,779 US7401555B2 (en) 2003-03-14 2006-07-26 Device for and method of coupling shafts, image formation apparatus, process cartridge, and belt unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003069680A JP2004279641A (en) 2003-03-14 2003-03-14 Image forming apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006138356A (en) * 2004-11-10 2006-06-01 Ricoh Co Ltd Shaft coupler, rotation transmitter and image forming apparatus
JP2011039126A (en) * 2009-08-07 2011-02-24 Sharp Corp Developing device and image forming apparatus equipped with the same
GB2495974A (en) * 2011-10-27 2013-05-01 Land Rover Uk Ltd Shaft connection having a collet with projections that engage a circumferential groove on a further shaft

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141337A (en) * 1985-12-12 1987-06-24 Sumitomo Electric Ind Ltd Grip force releasing device for grip coupler for pc steel
JPS638655A (en) * 1986-06-28 1988-01-14 Canon Inc Image carrier driving device
JP2001100476A (en) * 1999-09-30 2001-04-13 Minolta Co Ltd Drive connection device and image forming device using it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141337A (en) * 1985-12-12 1987-06-24 Sumitomo Electric Ind Ltd Grip force releasing device for grip coupler for pc steel
JPS638655A (en) * 1986-06-28 1988-01-14 Canon Inc Image carrier driving device
JP2001100476A (en) * 1999-09-30 2001-04-13 Minolta Co Ltd Drive connection device and image forming device using it

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006138356A (en) * 2004-11-10 2006-06-01 Ricoh Co Ltd Shaft coupler, rotation transmitter and image forming apparatus
JP4515226B2 (en) * 2004-11-10 2010-07-28 株式会社リコー Shaft coupling device, rotation transmission device, and image forming apparatus
JP2011039126A (en) * 2009-08-07 2011-02-24 Sharp Corp Developing device and image forming apparatus equipped with the same
GB2495974A (en) * 2011-10-27 2013-05-01 Land Rover Uk Ltd Shaft connection having a collet with projections that engage a circumferential groove on a further shaft
GB2495974B (en) * 2011-10-27 2014-06-18 Jaguar Land Rover Ltd Shaft connection

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