JP7024192B2 - Power supply structure and image forming device - Google Patents

Description

The present invention relates to a feeding structure and an image forming apparatus.

It has a power supply device provided in the main body of the device and a fixed contact connected to the power supply, and a movable contact attached to an opening / closing portion rotatably provided in the main body of the device and capable of contacting the fixed contact, and the movable contact is fixed. A power supply device having a convex terminal curved in a convex shape in a direction toward a contact and having a conical coil spring having a fixed contact having a large diameter at the tip is known (Patent Document 1).

A main body frame for mounting a process unit is integrally formed, and a plurality of terminals are provided on the side wall of the main body frame. One end of the terminal protrudes into the main body frame and the other end is on the outer surface of the side wall. A power supply structure of an image recording device configured to be in contact with a terminal of a mounted power supply device is also known (Patent Document 2).

Japanese Unexamined Patent Publication No. 5-323697 Japanese Unexamined Patent Publication No. 10-301465

In the present invention, the conductor path and the branch path are compared with the case where the first contact portion does not press contact with the conductor path due to the rotation of the second contact portion after the second contact portion is connected to the powered body. It is an object of the present invention to provide a feeding structure capable of ensuring the stability of contact points with and an image forming apparatus provided with the feeding structure.

In order to solve the above problems, the power supply structure according to claim 1 is a power supply structure for supplying power from a high-voltage power source of the apparatus main body to a plurality of powered objects inserted into the apparatus main body, and the power supply of the high-voltage power supply. The first conductor path extending from the electric contact portion connected to the portion and the first conductor path are arranged at different positions in the insertion direction and extend from the electric contact portion connected to the power feeding portion of the high-voltage power supply. It has two conductor paths, a plurality of first contact portions connected to the first conductor path and the second conductor path, and a plurality of second contact portions connected to the power-fed object. , A plurality of branch paths rotatably supported between the first conductor path, the second conductor path, and the plurality of powered objects, and the first conductor path fixed to the apparatus main body. The second conductor path and the holding material for holding the plurality of branch paths are provided. The plurality of first contact portions are pressed by the respective attachments, and the plurality of first contact portions are the first conductor path and the said , as compared with the state where the plurality of second contact portions are not pressed by the plurality of powered objects. It is strongly pressed against the second conductor path and has a wall portion that separates the first conductor path and the second conductor path in the insertion direction, and the wall portion is pressed against the first conductor path. The second contact portion is separated from the second contact portion pressed by the second conductor path .

The invention according to claim 2 is the power feeding structure according to claim 1, wherein the plurality of branch paths are a support portion supported by the holding material and a plurality of branch paths extending from one end of the support portion to a tip end portion. It is an elastic member having a first arm portion having a first contact portion and a second arm portion extending from the other end of the support portion and having the plurality of second contact portions at the tip end portion. When the second contact portion comes into contact with the plurality of powered objects and the second arm portion rotates about the support portion, the first arm portion receives a force in the rotational direction about the support portion. In response to this, the plurality of first contact portions are pressure-contacted with the first conductor path and the second conductor path , respectively.
The image forming apparatus according to claim 3 is formed by exposing the charging means for charging the image holder and the image holder charged by the charging means in the power feeding structure according to claim 1 or 2. The feeding structure according to claim 1 or 2, wherein the developing means for developing the electrostatic latent image, the transfer means for transferring the image developed by the developing means to a recording medium, and the charging means and the developing means are fed. And is characterized by including.
The image forming apparatus according to claim 4 has, in the image forming apparatus according to claim 3, a plurality of process cartridges in which the charging means and the developing means are integrally configured and attached / detached while sliding to the image forming apparatus main body. Then, when the plurality of process cartridges are attached to the image forming apparatus main body while sliding, the plurality of second contact portions are pressed against the plurality of process cartridges and the plurality of first contact portions are pressed. Is pressed against the first conductor path and the second conductor path.

In order to solve the above problems, the image forming apparatus according to claim 3 is used.
Charging means for charging the image holder and
A developing means for developing an electrostatic latent image formed by exposing the image holder charged by the charging means, and a developing means.
A transfer means for transferring an image developed by the developing means to a recording medium, and a transfer means.
The feeding structure according to claim 1 or 2 , wherein the charging means and the developing means are fed.
It is characterized by that.

The invention according to claim 4 is the image forming apparatus according to claim 3 .
It has a plurality of process cartridges for attaching and detaching the charging means and the developing means to and from the image forming apparatus main body while sliding and moving, and the plurality of process cartridges are attached to the image forming apparatus main body while sliding. At that time, the plurality of second contact portions are pressed against the plurality of process cartridges, and the plurality of first contact portions are pressed against the first conductor path and the second conductor path .
It is characterized by that.

According to the first, third and fourth aspects of the invention, after the plurality of second contact portions are connected to the plurality of powered objects, the plurality of second contact portions rotate to cause the plurality of first contacts. Compared with the case where the contact portion does not press contact with the conductor path, the stability of the contact point between the conductor path and the plurality of branch paths can be ensured.

According to the second aspect of the present invention, the pressure contact force between the conductor path and the contact point of the plurality of branch paths is increased as compared with the case where the second arm portion rotates and the first arm portion does not receive the force in the rotational direction. Can be high.

It is a vertical sectional view which shows the internal structure of an image forming apparatus. It is a perspective view which shows the housing of the image forming apparatus in which the feeding structure is arranged. It is a perspective view which shows a part of FIG. 2 enlarged. It is a perspective view which shows the whole structure of the power supply structure connected to a high voltage power source. It is an exploded perspective view of the power feeding structure. (A) is a perspective view showing the structure of the first branch path, and (b) is a perspective view showing the structure of the second branch path. It is a perspective view which shows the arrangement of the 1st branch path and the 2nd branch path of a power feeding structure. (A) is a schematic cross-sectional view taken along the line AA in FIG. 7, and FIG. 7B is a schematic cross-sectional view taken along the line BB in FIG. (A) is a schematic cross-sectional view illustrating the electrical connection between the first branch path and the first conductor path, and (b) is a schematic cross-sectional diagram illustrating the electrical connection between the second branch path and the second conductor path. It is a figure. It is sectional drawing explaining the electric connection between the power supply plate and the 1st branch path at the time of mounting a development unit, (a) is before the development unit comes into contact with a power supply structure, (b) is power supply by a development unit. Indicates the state of contact with the structure. It is sectional drawing explaining the electric connection between a feeding plate and a 2nd branch path at the time of mounting a photoconductor unit, (a) is before the photoconductor unit comes into contact with a feeding structure, (b) is a photoconductor. Indicates that the unit is in contact with the power supply structure.

Next, with reference to the drawings, embodiments and specific examples will be given below to explain the present invention in more detail, but the present invention is not limited to these embodiments and specific examples.
In addition, in the explanation using the following drawings, it should be noted that the drawings are schematic and the ratio of each dimension is different from the actual one, which is necessary for the explanation for easy understanding. Illustrations other than the members are omitted as appropriate.

(1) Overall Configuration and Operation of the Image Forming Device FIG. 1 is a vertical cross-sectional view showing the internal configuration of the image forming apparatus 1. Hereinafter, the overall configuration and operation of the image forming apparatus 1 will be described with reference to the drawings.

(1.1) Overall Configuration The image forming apparatus 1 includes a control device 10, a paper feeding device 20, a photoconductor unit 30, a developing unit 40, a transfer device 50, a fixing device 60, and a high-voltage power supply 70 in a housing F. On the upper surface (Z direction) of the image forming apparatus 1, an ejection tray T in which paper on which an image is recorded is ejected and accommodated is formed.

The control device 10 includes an image forming device control unit 11 that controls the operation of the image forming device 1, a controller unit 12 that prepares image data in response to a print processing request, an exposure control unit 13 that controls lighting of the exposure head LH, and the like. Have.

The controller unit 12 converts the print information input from an external information transmission device (for example, a personal computer or the like) into image information for latent image formation, and outputs a drive signal to the exposure head LH at a preset timing. .. The exposure head LH of the present embodiment is composed of an LED head in which a plurality of light emitting elements (LEDs: Light Emitting Diodes) are linearly arranged along the main scanning direction.

A paper feeding device 20 is provided at the bottom of the image forming device 1. The paper feeding device 20 includes a paper loading plate 21, and a large number of sheets P as a recording medium are loaded on the upper surface of the paper loading plate 21. The paper P, which is loaded on the paper loading plate 21 and whose position in the width direction is determined by the regulation plate (not shown), is pulled out one by one from the upper side by the paper drawer portion 22 to the right (X direction), and then the resist roller. It is conveyed to the nip portion of the pair 23.

The photoconductor unit 30 is provided above the paper feed device 20 (in the Z direction) independently and detachably from the housing F, and includes a photoconductor drum 31 as an image holder that is rotationally driven. There is. A charging roller 32, an exposure head LH, a developing unit 40, a primary transfer roller 52, and a cleaning blade 34 are arranged along the rotation direction of the photoconductor drum 31.

The developing unit 40 has a developing housing 41 in which a developing agent composed of toner and a carrier is housed, and each of them is independently and detachably provided with respect to the housing F. In the developing housing 41, a developing roller 42 arranged to face the photoconductor drum 31 and a pair of augers 44 for stirring and transporting the developer to the developing roller 42 side diagonally below the back surface side of the developing roller 42. It is arranged. A layer regulating member 46 that regulates the layer thickness of the developer is arranged close to the developing roller 42.
Each of the developing units 40 is similarly configured except for the developer housed in the developing housing 41, each forming a yellow (Y), magenta (M), cyan (C), and black (K) toner image. ..

The surface of the rotating photoconductor drum 31 is charged by the charging roller 32, and an electrostatic latent image is formed by the latent image forming light emitted from the exposure head LH. The electrostatic latent image formed on the photoconductor drum 31 is developed as a toner image by the developing roller 42.

The transfer device 50 has an intermediate transfer belt 51 on which each color toner image formed by the photoconductor drum 31 of each photoconductor unit 30 is multiplex-transferred, and an intermediate transfer belt 51 on which each color toner image formed by each photoconductor unit 30 is multiplex-transferred. It is composed of a primary transfer roller 52 that sequentially transfers (primary transfer) to 51, and a secondary transfer roller 53 that collectively transfers (secondary transfer) each color toner image superimposed and transferred on the intermediate transfer belt 51 to paper P. There is.

The high-voltage power supply 70 is arranged in the housing F on the side (-X direction) of the photoconductor unit 30 and the developing unit 40, and forms a toner image on the photoconductor unit 30 and the developing unit 40 via the feeding structure 100. A high-voltage bias voltage for toner image transfer is supplied to the primary transfer roller 52 and the secondary transfer roller 53 of the transfer device 50 via the power supply harness W (see FIG. 3). ..

Each color toner image formed on the photoconductor drum 31 of each photoconductor unit 30 is formed on an intermediate transfer belt 51 by a primary transfer roller 52 to which a predetermined transfer voltage is applied from a high voltage power source 70 controlled by an image forming apparatus control unit 11. Electrostatic transfer (primary transfer) is sequentially performed on the top, and a superimposed toner image on which each color toner is superimposed is formed.

The superimposed toner image on the intermediate transfer belt 51 is conveyed to the region (secondary transfer unit TR) in which the secondary transfer roller 53 is arranged as the intermediate transfer belt 51 moves. When the superimposed toner image is conveyed to the secondary transfer unit TR, the paper P is supplied from the paper feeding device 20 to the secondary transfer unit TR at the timing. Then, a predetermined transfer voltage is applied to the secondary transfer roller 53 from the high-voltage power supply 70 controlled by the image forming apparatus control unit 11, sent out from the resist roller pair 23, and intermediate to the paper P guided by the transport guide. The multiple toner images on the transfer belt 51 are collectively transferred.

The paper P on which the toner image is transferred in the transfer device 50 is conveyed to the fixing device 60 in a state where the toner image is not fixed. The toner image of the paper P conveyed to the fixing device 60 is fixed by the action of crimping and heating by the pair of heating modules 61 and the pressure module 62.
The paper P on which the fixing toner image is formed is discharged from the discharge roller pair 69 to the discharge tray T on the upper surface of the image forming apparatus 1.

(2) Power supply structure FIG. 2 is a perspective view showing a housing F of an image forming apparatus 1 in which a power supply structure 100 is arranged, FIG. 3 is a perspective view showing a part of FIG. 2 in an enlarged manner, and FIG. 4 is a high-voltage power supply 70. 5 is an exploded perspective view of the power feeding structure 100, FIG. 6A is a perspective view showing the configuration of the first branch path 120A, and FIG. 5B is a perspective view showing the overall configuration of the feeding structure 100 connected to the above. 2 is a perspective view showing the configuration of the branch path 120B, FIG. 7 is a perspective view showing the arrangement of the first branch path 120A and the second branch path 120B of the power feeding structure 100, and FIG. 8A is A- in FIG. A schematic cross-sectional view, (b) is a schematic cross-sectional view taken along the line BB in FIG. 7, FIG. 9 (a) is a schematic cross-sectional view illustrating an electrical connection between a first branch path and a first conductor path, (b). Is a schematic cross-sectional view illustrating the electrical connection between the second branch path and the second conductor path.
Hereinafter, the configuration of the power feeding structure 100 will be described with reference to the drawings.

(2.1) Configuration of power feeding structure As shown in FIGS. 2 and 3, the power feeding structure 100 is arranged below the opening Fa formed on the front surface side (Y direction) of the housing F, and is arranged below the housing F. The structure is such that the power feeding unit 71 of the high-voltage power supply 70 arranged on the left side (-X direction) and the photoconductor unit 30 and the developing unit 40 as an example of the power receiving body are electrically connected.

As shown in FIG. 4, the power feeding structure 100 includes electric contact portions 101A and 101B (see FIG. 3) that come into contact with the feeding portion 71 of the high-voltage power supply 70, and a first conductor path 110A extending from the electric contact portions 101A and 101B. A second conductor path 110B (shown by a broken line in FIGS. 2, 3, and 4), a first branch path 120A connected to the first conductor path 110A, and a second conductor path 110B connected to the second conductor path 110B. The frame member 130 as a holding member for holding the branch path 120B, the electrical contact portions 101A, 101B, the first conductor path 110A, the second conductor path 110B, the first branch path 120A, and the second branch path 120B. , And a cover member 140.

(2.1.1) First Conductor Path, Second Conductor Path As shown in FIG. 5, the electric contact portion 101A and the first conductor path 110A, and the electrical contact portion 101B and the second conductor path 110B Is a wire rod formed as a unit. One end of the electric contact portions 101A and 101B is folded back in a U shape (see FIG. 3) so that the electric contact portions 101A and 101B come into contact with the feeding portion 71 of the high-voltage power supply 70 at at least two places. The other ends of the electric contact portions 101A and 101B extend to form the first conductor path 110A and the second conductor path 110B.
As the material of the electric contact portions 101A and 101B, the first conductor path 110A, and the second conductor path 110B, a stainless steel wire for a spring having conductivity and spring property (for example, SUS304WPA) is used, and the high voltage power source 70 and the second conductor path 110B are used. The electrical connection between the branch path 120A of 1 and the branch path 120B of the second branch path 120B is planned.

(2.1.2) First branch path, second branch path The first branch path 120A and the second branch path 120B are attached to a frame member 130 as a holding material, which will be described later, as shown in FIG. The coil portions 121A and 121B as an example of the support portion that is rotationally supported, and the first contact portion 122A that extends from one end of the coil portions 121A and 121B and connects to the first conductor path 110A and the second conductor path 110B at the tip end. , 122B, first arm portions 123A, 123B, and second arm portions 125A, 125B having second contact portions 124A, 124B extending from the other ends of the coil portions 121A, 121B and connecting to the powered body at the tip. It is a torsion spring as an example of an elastic member having.

The first branch path 120A and the second branch path 120B are formed by using a stainless steel wire for a spring having conductivity and spring property (for example, SUS304WPA), and the first conductor path 110A and the second conductor path 110B are formed. And the electric connection between the feeding plates PB1 and PB2 (see FIGS. 10 and 11).
Further, the first contact portions 122A and 122B connected to the first conductor path 110A and the second conductor path 110B have flat portions 122Aa and 122Ba. This stabilizes the contact between the first conductor path 110A and the second conductor path 110B and the first contact portions 122A and 122B.

In the first branch path 120A and the second branch path 120B configured in this way, the second contact portions 124A and 124B are in contact with the feeding plates PB1 and PB2, and the second arm portions 125A and 125B are coil portions 121A. , The first arm portions 123A and 123B are rotationally deformed around 121B, and the first contact portions 122A and 122B are stably pressure-welded to the first conductor path 110A and the second conductor path 110B. The pressure contact force between the first conductor path 110A and the second conductor path 110B and the first contact portions 122A and 122B is increased.

(2.1.3) Frame member The frame member 130 includes the shaft portions 131 and 132 that rotationally support the first branch path 120A and the second branch path 120B, and the second arm portion 125A of the first branch path 120A. A holding portion 135 for holding the wall portion 134 surrounding the entire second branch path 120B and the second conductor path 110B is formed except for the surrounding wall portion 133 and the second contact portion 124B of the second branch path 120B. It is an insulating synthetic resin member.

As shown in FIGS. 7 and 8, the shaft portion 131 is provided on the side surface of the wall portion 133 erected on the bottom surface 130a of the frame member 130 so as to project in the same direction as the direction in which the first conductor path 110A extends. The coil portion 121A of the first branch path 120A is rotationally supported.
The shaft portion 132 is provided on the side surface of the wall portion 134 erected on the bottom surface 130a of the frame member 130 so as to project in the same direction as the second conductor path 110B extends, and the coil portion 121B of the second branch path 120B. Rotately support.

The wall portion 133 surrounds the second arm portion 125A except for the second contact portion 124A of the first branch path 120A. As a result, it is possible to suppress the rattling of the first branch path 120A and accurately position the first branch path 120A.

The wall portion 133 has a support wall 133a. As shown in FIG. 9A, the support wall 133a contacts and supports the second arm portion 125A of the first branch path 120A rotationally supported by the shaft portion 131 from below, and supports the second arm portion 125A. Is rotationally deformed around the coil portion 121A (see L1 in the figure), so that the first arm portion 123A is rotationally deformed and the first contact portion 122A is pressed against the first conductor path 110A (F1 in the figure). reference). As a result, the pressure contact force of the contact point between the first conductor path 110A and the first contact portion 122A of the first branch path 120A can be increased.

The wall portion 134 surrounds the entire second branch road 120B except for the second contact portion 124B of the second branch road 120B. As a result, the rattling of the second branch path 120B can be suppressed and the second branch path 120B can be positioned with high accuracy.

The wall portion 134 has a support wall 134a. As shown in FIG. 9B, the support wall 134a contacts and supports the second arm portion 125B of the second branch path 120B rotationally supported by the shaft portion 132 from below, and supports the second arm portion 125B. Is rotationally deformed around the coil portion 121B (see L2 in the figure), so that the first arm portion 123B is rotationally deformed and the first contact portion 122B is pressed against the second conductor path 110B (F2 in the figure). reference). As a result, the pressure contact force of the contact point between the second conductor path 110B and the first contact portion 122B of the second branch path 120B can be increased.

The holding portion 135 is formed in the wall portion 134 as a recess that opens upward to hold the second conductor path 110B fitted in the recess, and the second conductor path 110B is rotationally supported by the shaft portion 132. The first contact portion 122B of the second branch path 120B is pressed from above.

(2.1.4) Cover member The cover member 140 has a first arm portion 123A having a holding portion 141 for holding the first conductor path 110A and a first contact portion 122A of the first branch path 120A. It is an insulating synthetic resin member in which a surrounding wall portion 142 is formed, and is arranged so as to cover the upper surface of the frame member 130.

As shown in FIG. 7, a plurality of holding portions 141 are formed in the direction in which the first conductor path 110A extends as recesses 141c and 141d having an upper opening in ribs 141a and 141b erected on the bottom surface 140a of the cover member 140. The first conductor path 110A fitted in the recesses 141c and 141d is held.

The wall portion 142 is formed by ribs 141a and 141b erected facing each other, and surrounds the first contact portion 122A and the first arm portion 123A of the first branch path 120A. As a result, it is possible to suppress the rattling of the first branch path 120A and accurately position the first branch path 120A.

In the present embodiment, the frame member 130 and the cover member 140 are manufactured by injection molding using a synthetic resin material having a flame retardancy of V-1 or higher due to UL94, and the synthetic resin material is insulated. Flame-retardant ABS resin, modified PPE resin, PC (polycarbonate) resin, PBT (polybutylene terephthalate) as materials that have properties (materials with a volume resistance of ¹⁰⁹ Ω · cm or more) and do not impair power supply performance. Examples include resin.

In the power feeding structure 100 configured as described above, as shown in FIGS. 8A and 8B, the first conductor path 110A covers the upper surface of the frame member 130 holding the second conductor path 110B. The cover members 140 for holding the above are arranged in a laminated state. Thereby, the necessary insulation distance between the first conductor path 110A and the second conductor path 110B for guiding the high voltage bias voltage can be secured.

As described above, in the power feeding structure 100 according to the present embodiment, the first conductor path 110A and the first branch path 120A, and the second conductor path 110B and the second branch path 120B, respectively, which are composed of wire rods, are torsion springs. It is pressure-welded by pressure-contacting force and electrically connected to ensure the stabilization of contacts.

(3) Operation of the feeding structure FIG. 10 is a schematic cross-sectional view illustrating the electrical connection between the feeding plate PB1 and the first branch path 120A when the developing unit 40 is mounted, and FIG. 10A is a schematic cross-sectional view illustrating the feeding by the developing unit 40. Before contacting the structure 100, (b) shows a state in which the developing unit 40 is in contact with the feeding structure 100. FIG. 11 is a schematic cross-sectional view illustrating the electrical connection between the feeding plate PB2 and the second branch path 120B when the photoconductor unit 30 is mounted, and FIG. 11A shows the photoconductor unit 30 in contact with the feeding structure 100. Previously, (b) shows a state in which the photoconductor unit 30 is in contact with the feeding structure 100.

As shown in FIG. 10A, when the developing unit 40 is mounted on the image forming apparatus 1, the developing unit 40 slides into the housing F and the feeding plate PB1 is the second branch path 120A. The second arm portion 125A of the first branch path 120A is supported from below by the support wall 133a and rotates around the coil portion 121A from the free state (shown by the broken line in the figure) before contacting the contact portion 124A. It is deformed (see L1 in the figure), and the first contact portion 122A formed at the tip of the first arm portion 123A is pressed against the first conductor path 110A (see F1 in the figure) to be in an electrically connected state. There is.

When the developing unit 40 further slides and the feeding plate PB1 comes into contact with the second contact portion 124A of the first branch path 120A, the second arm portion 125A of the first branch path 120A is rotationally deformed and the support wall 133a. It becomes a non-contact state with.
As a result, the first contact portion 122A formed at the tip end portion of the first arm portion 123A is strongly pressed against the first conductor path 110A (see F3 in the figure). As a result, the contact point between the first conductor path 110A and the first branch path 120A branching from the first conductor path 110A is stabilized, and the power supply from the high voltage power source 70 is surely performed.

As shown in FIG. 11, when the photoconductor unit 30 is attached to the image forming apparatus 1, the photoconductor unit 30 slides into the housing F and the feeding plate PB2 is the second branch path 120B. Before contacting the contact portion 124B, the second arm portion 125B of the second branch path 120B is supported from below by the support wall 134a and is rotationally deformed around the coil portion 121B from the free state (shown by the broken line in the figure). (See L2 in the figure), the first contact portion 122B formed at the tip of the first arm portion 123B is pressed and urged by the second conductor path 110B (see F2 in the figure), and is in an electrically connected state. ing.

When the photoconductor unit 30 further slides and the feeding plate PB2 comes into contact with the second contact portion 124B of the second branch path 120B, the second arm portion 125B of the second branch path 120B is rotationally deformed to support the support wall. It is in a non-contact state with 134a.
As a result, the first contact portion 122B formed at the tip of the first arm portion 123B is pressure-welded (strongly by the second conductor path 110B) (see F4 in the figure, whereby it and the second conductor path 110B. , The contact point with the second branch path 120B branching from the second conductor path 110B is stabilized, and the power supply from the high voltage power source 70 is surely performed.

In the present embodiment, the high-voltage power supply 70 and the power supply structure 100 for electrically connecting the photoconductor unit 30 and the developing unit 40 that receive different high-voltage bias power supplies as the power supply recipients have been described. However, the power supply structure is branched from the conductor path. By arranging a plurality of paths, it can be applied even if there are three or more types of powered objects that receive different high-voltage bias feeding.

1 ... Image forming device 10 ... Control device 20 ... Feeding device 30 ... Photoreceptor unit 40 ... Developing unit 50 ... Transfer device 60 ... Fixing device 70 ... High voltage Power supply 100 ... Power supply structure 110A ... First conductor path 110B ... Second conductor path 120A ... First branch path 120B ... Second branch path 130 ... Frame member 140・ ・ ・ Cover member F ・ ・ ・ Housing

Claims (4)

It is a power supply structure that supplies power from the high-voltage power supply of the main body of the device to a plurality of powered objects inserted into the main body of the device.
The first conductor path extending from the electric contact portion connected to the power feeding portion of the high-voltage power supply, and
A second conductor path, which is arranged at a position different from the first conductor path in the insertion direction and extends from an electric contact portion connected to the power supply section of the high voltage power supply,
The first conductor has a plurality of first contact portions connected to the first conductor path and the second conductor path, and a plurality of second contact portions connected to the powered body. A plurality of branch paths rotatably supported between the path and the second conductor path and the plurality of powered bodies, respectively .
A holding material fixed to the main body of the apparatus and holding the first conductor path, the second conductor path, and the plurality of branch paths is provided.
The plurality of branch paths are pressed by the plurality of second contact portions when the plurality of powered bodies are mounted on the main body of the apparatus, and the plurality of second contact portions are pressed by the plurality of fed devices. The plurality of first contact portions are pressed more strongly by the first conductor path and the second conductor path than when not pressed against the body.
It has a wall portion that separates the first conductor path and the second conductor path in the insertion direction.
The wall portion separates the second contact portion pressed by the first conductor path from the second contact portion pressed by the second conductor path.
A power supply structure characterized by that. The plurality of branch paths include a support portion supported by the holding material, a first arm portion extending from one end of the support portion and having the plurality of first contact portions at the tip portion, and other than the support portion. It is an elastic member having a second arm portion extending from an end portion and having the plurality of second contact portions at the tip portion, and the plurality of second contact portions come into contact with the plurality of fed bodies and said the first. When the two arm portions rotate around the support portion, the first arm portion receives a force in the rotation direction about the support portion, and the plurality of first contact portions receive the first conductor path. And are pressure-welded to the second conductor path , respectively.
The power supply structure according to claim 1. Charging means for charging the image holder and
A developing means for developing an electrostatic latent image formed by exposing the image holder charged by the charging means, and a developing means.
A transfer means for transferring an image developed by the developing means to a recording medium, and a transfer means.
The feeding structure according to claim 1 or 2 , wherein the charging means and the developing means are fed.
An image forming apparatus characterized in that. It has a plurality of process cartridges for attaching and detaching the charging means and the developing means to and from the image forming apparatus main body while sliding and moving, and the plurality of process cartridges are attached to the image forming apparatus main body while sliding. At that time, the plurality of second contact portions are pressed against the plurality of process cartridges, and the plurality of first contact portions are pressed against the first conductor path and the second conductor path .
The image forming apparatus according to claim 3.

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