JPH09319174A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent contact defect in electric power feeding from a power source to a site such as a control part and the control signal transmission from the control part to the power source, a drive part or the like, to realize improvement of the operation performance at the assembling time and the maintenance time, simplification of a device and reduction of a manufacturing cost, and to ensure the electric connection between a first main body and a second main body in an image forming device of bisected structure. SOLUTION: (1) This image forming device is provided with a relaying board 30 directly connecting to the power source part 26 for feeding the power to respective parts of the device and a control part 31 for controlling the operation of the image forming device itself by means of a connecting part 29, and mounts the power feeding route from the power source part 26 to the control part 31 and a control signal route from the control part 31 to the power source part 26 on the relaying board 30. (2) When mounting an electric terminal A in a projecting shape on the fix-mounted first main body and mounting an electric terminal B formed on an insulating film surface onto the movable second main body being bisected correspondingly to the first main body across an elastic member, and when the first main body and the second main body B is severally mounted on a position capable of forming the image, an electric terminal B is held to come into press contact with an electric terminal A across the elastic member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as an electrophotographic copying machine, a printer and a facsimile, and more particularly to improvement of a power supply and control signal transmission mechanism in the image forming apparatus main body.

[0002]

2. Description of the Related Art In a conventional image forming apparatus, a power supply unit is used when power is supplied from a power supply unit to a control unit or when a control signal is transmitted from the control unit to a power supply unit or a drive unit. The power supply and the control signal transmission were performed by connecting the cable and the control unit with a bundled wire. However, if all power supply and control signal transmission are attempted by a bundle, a plurality of bundles are required, and there are many connector connection points, which is a problem in assembly. In addition, a plurality of connectors may not be reliably connected, which may result in a defective connection.

Further, in the conventional two-part main body image forming apparatus, the first main body and the second main body to be divided are respectively provided with electric connection terminals, and the first main body is provided with the second main body. There is a mechanism in which, when set, each of the electrical connection terminals described above automatically contacts and conducts. As an example of a conventional electrical connection terminal, when one of the electrical connection terminals is a convex shape, and the other electrical connection terminal is a planar electrical connection terminal formed on the film surface, these two electrical connection terminals are If the contact is continued, the planar electrical connection terminal is plastically deformed, the contact surface is dented, and connection failure occurs.

[0004]

As a first problem, in the conventional image forming apparatus, when an electric power is supplied from the power supply unit to the control unit or the like, or when the control unit sends a control signal to the power supply unit, the drive unit or the like. In order to transmit the power, a power supply unit, a control unit, and the like are connected by a bundle to supply power and transmit a control signal. However, if it is attempted to perform all power supply and control signal transmission by the bundle, the number of bundles may increase and the cost may increase. In addition, an assembling work of bundling a plurality of bundled wires is required, which causes a problem of assembling. By the way, when connecting to the power supply unit, control unit, etc. with a bundle, usually, the connector installed at the end of the bundle should be fitted to the connector installed in the power supply unit, control unit, etc. However, when the number of bundled wires increases, the number of places connected by the connector increases, and the work of fitting the connectors together increases. Therefore, there is a problem of assembling, and there are cases where the connector is not fitted securely,
There was also the possibility of a connection failure.

As a second problem, in the conventional image forming apparatus, the apparatus main body is divided into a first main body and a second main body, and the divided first main body and second main body are each provided with an electric terminal. Some of them are installed, and when the first main body and the second main body are set in positions where images can be formed, the respective electric terminals come into contact with each other. However, if one of the electrical terminals has a convex shape and the other electrical terminal is a planar electrical terminal formed on the film, if the two electrical terminals continue to contact, the planar electrical terminal Was plastically deformed and the contact surface was dented, resulting in poor contact. In order to prevent this, if the planar electric terminals are reinforced, the electric terminals collide with each other, and it becomes impossible to set the first main body and the second main body at positions where images can be formed.

An object of the present invention is to solve the above problems and to provide an image forming apparatus which improves workability during assembly and maintenance, simplifies the apparatus, and reduces manufacturing cost. It is a thing.

[0007]

In the image forming apparatus of the present invention which solves the above-mentioned problems, at least a power supply section for supplying electric power to each section in the image forming apparatus and an operation of the image forming apparatus itself are controlled. In an image forming apparatus having a control unit, a relay board that directly connects the power supply unit and the control unit by a connection unit, and a power supply path from the power supply unit to the control unit and the control unit to the A control signal path to a power supply unit is installed on the relay board.

The image forming apparatus of the present invention includes at least a power supply section for supplying electric power to each section in the image forming apparatus,
In an image forming apparatus in which a drive unit having a drive motor for driving each unit in the image forming apparatus and a power supply path from the power supply unit to the drive motor are installed, the power supply unit and the drive unit are connected to each other. And a power supply path from the power supply unit to the drive unit is installed in the relay substrate.

Further, the image forming apparatus of the present invention includes at least a power source section for supplying electric power to each section in the image forming apparatus,
In an image forming apparatus in which a drive unit A having a drive motor for driving each unit in the image forming apparatus and a power supply path from the power supply unit to the drive motor are installed, another drive unit is provided in the drive unit A. B is directly connected by a connecting part installed to each other, and a power supply path from the power supply part to the driving part B is installed in the relay board and the driving part A. is there.

Furthermore, in the image forming apparatus of the present invention, at least a power source section for supplying electric power to each section in the image forming apparatus, a control section for controlling the operation of the image forming apparatus itself, and an inside of the image forming apparatus. In an image forming apparatus in which a drive unit having a drive motor for driving each unit and a power supply path from the power source unit to the drive motor are installed, the power source unit, the control unit, and the drive unit upper member are connected. Has a relay substrate directly connected to the control unit, a power supply path from the power supply unit to the control unit, a control signal path from the control unit to the power supply unit, and from the power supply unit to the drive unit A power supply path B and a control signal path B from the control unit to the drive unit A are installed on the relay board.

Furthermore, the image forming apparatus of the present invention comprises an image forming apparatus comprising a first apparatus main body fixedly installed and a second apparatus main body which is divided and movable with respect to the first apparatus main body. In the device, the convex electric terminal instep is installed on the first device body, and the electric terminal B formed on the insulating film surface is installed on the second device body via an elastic member, or The convex electric terminal instep is installed on the second device body, and the electric terminal B formed on the insulating film surface is installed on the first device body via an elastic member, and the first device is installed. When the main body and the second apparatus main body are installed at a position where an image can be formed, the electric terminal B is pressed against the electric terminal A via an elastic member.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall configuration diagram showing a color image forming apparatus (color printer) as an embodiment of the image forming apparatus according to the present invention.

(Charging / Electrification) In FIG. 1, reference numeral 10 denotes a photosensitive drum which is an image bearing member, which is formed by coating an OPC photosensitive layer on the drum, and is grounded and rotated clockwise. 11
In scorotron charger, provided by a corona discharge by a grid and the corona discharge wire which uniform charging has been potential held in the V _G of the V _H the photosensitive drum 10 peripheral surface. Prior to the charging by the scorotron charger 11, the pre-charging pre-exposure means (PCL) 12 using a light emitting diode or the like is used to eliminate the history of the photoreceptor until the previous printing, and the peripheral surface of the photoreceptor is neutralized. deep.

(Exposure) After the photosensitive drum is uniformly charged, the exposure means (exposure optical system) 13 performs image exposure based on an image signal. The exposure means 13 is a polygon mirror 13 that rotates using a laser diode (not shown) as a light emitting source.
1, the collimator lens 132, the fθ lens 133, etc., the optical path is bent by the reflection mirror 134, and scanning is performed. A latent image is formed by the rotation (sub-scanning) of the photosensitive drum 10. In this embodiment, the character portion is exposed to form an inverted latent image in which the character portion has a lower potential V _L.

(Development) Yellow (Y), magenta (M), cyan (C), black (K) are formed around the periphery of the photosensitive drum 10.
There is provided a developing means 14 composed of developing devices 14Y, 14M, 14C and 14K each containing a developer composed of toner and a carrier such as a toner. This is performed by the rotating developing sleeve 141. The developer consists of a carrier in which ferrite is used as a core and is coated with an insulating resin around it, and a toner whose main component is polyester and pigments according to the color and charge control agents, silica, titanium oxide, etc. are added. The agent is regulated to a layer thickness of 300 to 600 μm on the developing sleeve 141 by the layer forming member 142, and is conveyed to the developing area.

[0016] As 0.4~1.0mm gap is greater than the layer thickness (developer) to the developing sleeve 141 in the developing zone between the photosensitive drum 10, the DC bias of the AC bias and V _DC of V _AC during which The signals are superimposed and applied. V _DC and V _H, for charging the toner are the same polarity, the toner given the opportunity to leave from the carrier by V _AC and V
_It does not adhere to the _VH portion having a higher potential than _DC, but adheres to the _VL portion having a lower potential than _VDC , and visualization (reversal development) is performed.

After the visualization of the first color is completed, the process for forming the image of the second color is started, the uniform charging is performed again by the scorotron charger 11, and a latent image based on the image data of the second color is formed by the exposing means 13. To be done. At this time, the charge elimination by the PCL 12 performed in the image forming process of the first color is not performed because the toner attached to the image portion of the first color scatters due to a sharp drop in the surrounding potential.

Again, a latent image similar to that of the first color is formed and developed on the portion of the photoconductor having the potential of V _H all over the peripheral surface of the photoconductor drum 10 without the image of the first color. However, in the portion where the first-color image is developed again, the latent image of V _M ′ is formed by the light-shielding toner of the first color and the electric charge of the toner itself.
Developing in response to the potential difference between the _DC and V _M 'is performed. In the overlapping portion of the first color image and the second color image, development of the first color is performed by V
_When the latent image of _L is formed, the balance between the first color and the second color is lost, so that the exposure amount of the first color is reduced and V _H > V _M >
In some cases, the intermediate potential may be V _L.

An image forming process similar to that for the second color is performed for the third and fourth colors, and four steps are performed on the peripheral surface of the photosensitive drum 10.
A visible color image is formed.

(Toner Replenishment) The toner replenishing means 16 is provided with a plurality of toner cartridges 15, and the toner discharged from the toner cartridges 15 passes through the replenishment path 17 and
The toner corresponding to each of the plurality of developing units 14Y, 14M, 14C and 14K is controlled and replenished.

(Paper feeding) On the other hand, the recording material P stored in the paper feeding cassette 18 is sent out by the half-moon roller 191 of the paper feeding means 19 and temporarily stopped by the registration roller 193 via the intermediate roller 192. When the transfer timing is adjusted, the registration roller 193 is rotated to feed the sheet to the transfer area.

(Transfer, Fix, Discharge) In the transfer area, the transfer means (transfer roller) 20 is pressed against the peripheral surface of the photosensitive drum 10 in synchronism with the transfer timing to sandwich the recording material P fed. When worn, the multicolor image is transferred at once.

Next, the recording material P is discharged by the separating means (separating brush) 21 which is brought into contact with the recording material at almost the same time, separated by the peripheral surface of the photosensitive drum 10 and conveyed to the fixing means 22, where the heat roller 221 and the pressure roller are attached. After the toner is fused by heating and pressurizing 222, the toner is ejected to a paper ejection tray 24 outside the apparatus via a paper ejection unit (paper ejection roller) 23. The transfer means 20 and the separation means 21 are withdrawn from the peripheral surface of the photoconductor drum 10 after the recording material P has passed and are ready for the next toner image formation.

(Cleaning) On the other hand, the photosensitive drum 10 from which the recording material P has been separated is cleaned by pressing the blade 251 of the cleaning device 25 to remove and clean residual toner, and is again discharged by the PCL 12 and charged by the charger 11. Then, the next image forming process is started. It should be noted that the blade 251 moves immediately after the cleaning of the photoconductor surface is completed and retracts from the peripheral surface of the photoconductor drum 10.

The image forming apparatus according to the present invention comprises a first apparatus main body (first main body) 100 fixedly installed and a second apparatus main body (second main body) which is movable substantially horizontally with respect to the first main body. Main body) 200. The first main body 100 is provided with an exposure unit 13, a transfer unit 20, a separation unit 21, a paper feed cassette 18, a paper feed unit 19, a fixing unit 22, a paper ejection unit 23, a power supply unit (power supply unit) 26, and the like. ing. The second main body 200 includes an image carrier 10, a scorotron charger 11, a pre-charging exposure unit 12, a developing unit 14 including a plurality of developing units, a plurality of toner replenishing units 16, a plurality of toner cartridges 15, a cleaning unit 25, and the like. Is provided.

The above-described image forming process is performed in a state where the second main body 200 is housed in the first main body 100 of the image forming apparatus as shown in FIG.

In FIG. 2, the movable second main body 200 is fixed to the first main body 1 when the image forming apparatus is not in operation.
00 is a cross-sectional view showing a state in which the inside of the image forming apparatus is opened by horizontally moving it with respect to 00 to position it on the right side in the drawing. In this open state, the outlet of the paper feeding means 19 inside the first main body 100, a part of the conveying path of the recording material P, the transfer means 2
0, the separating means 21, and the inlets of the fixing means 22 are exposed to the upper surface of the apparatus. Further, the scorotron charger 11, the pre-charging exposure unit 12, the cleaning unit 25, and the like, which are arranged inside the second main body 200 (on the left side in the drawing), are also exposed. In this open state, it is possible to easily remove jammed paper on the transport path, repair and inspect each of the image forming means. In this configuration, as shown in FIG. 2, even when the second main body 200 is pulled out, the image forming body 10 is surrounded by the paper feeding section 19, the cleaning means 25, and the plurality of developing means 14 (Y, M, C, K). Therefore, the image forming body 10 will not be touched even if a hand is put on the upper surface of the apparatus main body for jam removal or the like.
The second main body 200 rides on a guide rail (not shown), can be pulled out and moved on the rail, and the stopper limits the stop position.

1 and 2, in the image forming apparatus according to the present invention, the upstream side of the feeding of the recording material P on the right side of the drawing is the front side 1F of the apparatus main body, and the discharging side of the recording material P on the left side of the drawing is the apparatus main body. It is the rear side 1R.

The developing means 14 (Y, M, C, K) can be attached and detached from the front side by opening an opening / closing door (developer attaching / detaching door) near the center of the front side 1F of the apparatus main body in the state shown in FIG. A plurality of toner cartridges 15 connected to the toner replenishing means 16
Can be attached and detached from the front side 1F of the apparatus main body by opening an opening / closing door (toner cartridge attachment / detachment door) on the front side 1F of the apparatus main body. Further, a paper feed cassette 18 is attachable to and detachable from the front side 1F below the front side 1F of the apparatus main body. A manual paper feed tray 181 can be erected above the insertion port of the feeding cassette 18.

By the way, the image forming body 10 and the developing means 14
Is more frequently attached and detached than other process means,
Also, its service life is short. Further, since the toner is consumed, the toner cartridge 1 is supplied to the toner replenishing means 16.
5 must be replaced frequently to replenish the toner. The recording material P in the paper feed cassette 18 is replenished many times, and the paper feed cassette 18 is pulled out many times. Therefore, in consideration of operability, as shown in FIG. 1, the developing means 14 and the paper feed cassette 18 are taken out from the front side 1F of the apparatus main body so that they can be attached and detached from the front side 1F of the apparatus main body. Further, in order to facilitate the replenishment of toner, the toner cartridge 15 is installed above the front side 1F of the apparatus main body. Further, as shown in FIG. 2, the transfer means 20, the separation means 21,
The members of the sheet feeding means 19 and the like can be detached from the front side 1F of the apparatus main body through the upper surface of the apparatus main body.

Since the process means are arranged in this manner, the fixing means 22 is installed on the rear side 1R of the apparatus main body. As shown in FIG. 2, the opening / closing door (device rear side door) 101 is opened in the direction A, and the fixing means 22 is attached to the rear side 1R of the apparatus main body.
It can be attached / detached horizontally from the opening in the downstream direction.

The apparatus rear door 101 is locked at the time of image formation, and is closed and locked at the rear side of the first main body. The apparatus back door 101 is pivotally supported by a support shaft 102 at an opening portion on the downstream side of the paper feed on the back surface of the first main body.
By rotating in the direction of arrow A about the center, the opening can be opened and closed. The fixing unit 22 and the power supply unit 26 can be attached and detached with the apparatus rear door 101 being opened.

The fixing means 22 includes the power supply unit 2
It is mounted on the upper surface of 6 and is fixedly positioned by a positioning boss and a screw on a fixing plate (not shown) installed inside the opening. A connecting portion (connector) 27 is provided on the bottom of the fixing unit 22 and the upper portion of the power supply unit 26, respectively. When the fixing means 22 is slid on the power supply unit 26 and installed at a predetermined position,
The connector 27 is connected and becomes conductive.

The power supply unit 26 is detachably fixed to the frame of the first main body 100. Power supply unit 2
Reference numeral 6 designates a drive system for driving each means in the apparatus and an AC power supply for supplying heat to the heat roller 221 of the fixing means 22, a scorotron charger 11, a developing means 14, a transferring means 20, a separating means 21, a driving means, and a control. A DC power supply for supplying the means and the like is integrally configured.

FIG. 3 is a perspective view showing the arrangement of a plurality of substrates housed in the first main body 100, FIG. 4 is a plan view showing the arrangement of these substrates, and FIG. 5 is a schematic view showing the arrangement of the substrates. .

A relay board 30 is provided inside the main body of the image forming apparatus in which the power supply unit 26 is installed, and is connected to the power supply unit 26 via a connecting portion (connector) 28. A power supply path and a control signal path are wired on the relay board 30. A controller (control board) 31 is connected to one end of the relay board 30 via a connector (connector) 29. In addition, the relay board 30
A drive unit instep 37 is connected to the other end of the drive unit via a connecting unit (connector) 36.

As described above, the power supply section 26 and the control section 31 are directly connected by the relay board 30, and the power supply path and the control signal path are installed in the relay board 30, so that the power supply section 26 and the control section 31 are connected. Since a plurality of bundled wires to be connected can be deleted, the work of bundling the bundled wires can be omitted, the assemblability can be improved, and the cost of the entire apparatus can be reduced. In addition, all the paths can be connected by directly connecting the power supply unit 26 and the relay board 30, and the control unit 31 and the relay board 30, respectively, so that the labor of individually connecting the bundled connectors can be saved. The assemblability can be improved. Regarding the problem of contact failure, if the power supply unit 26 is not installed in the main body of the apparatus unless the power supply unit 26 and the relay board 30 are connected to each other, the contact failure can be prevented. Is.

A control section 31 connected to the relay board 30.
A high-voltage power supply unit 33 is connected to the other end of the via a connection unit (connector) 32. A print controller (formatter) board 35 is connected to the other end of the controller 31 via a connector (connector) 34. In this way, the control unit 31 and the high-voltage power supply unit 33 are directly connected by the connecting unit 32, and the high-voltage power supply is provided on the relay board 30 in which the power supply path to the control unit 31 and the control signal path to the power supply unit 26 are installed. An electric power supply path to the unit 33 is installed. In this way, by installing two power supply paths and one control signal path on the relay board 30, the relay board 3
0 becomes multifunctional and may reduce cost compared to forming each path with multiple bundle lines. Moreover, since all the power supply paths to the high voltage power supply unit 33 can be connected only by connecting the control unit 31 and the high voltage power supply unit 33 and between the control unit 31 and the relay board 30, the assembling property can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

A drive part 37 is connected to the other end of the relay board 30 via a connecting part (connector) 36. The drive unit A 37 is a unit including a main motor that drives each unit of the image forming apparatus. Driver Otsu 39
Is a unit including a paper feeding motor for driving the paper feeding means 19 and the like. In this way, the power supply unit 26 and the drive unit A 37 are directly connected by the relay board 30, and the power supply path to the drive unit A 37 is installed in the relay substrate 30, so that the power supply unit 26 and the drive unit A 37 are connected. Since all the power supply paths to the drive part instep 37 can be connected only by directly connecting with the relay board 30, the assembling property can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

At the other end of the drive part instep 37,
The drive unit B 39 is connected via the connecting unit (connector) 38. Another drive unit B is directly connected to the drive unit A 37, and the power supply route of the drive unit B is installed on the relay board 30 in which the power supply route to the drive unit A 37 is installed. By installing the two power supply paths on the relay board 30 as described above, it is only necessary to connect the drive section A 37 and the drive section B 39, and the drive section A 37 and the relay board 30 respectively. Since the power supply path can be connected, the assemblability can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

Next, the invention according to claim 5 is the power supply unit 2.
6, the control unit 31, and the drive unit A 37 are directly connected by the relay board 30, and the power supply path from the power supply section 26 to the control section 31 and the control signal path from the control section 31 to the power supply section 26 are connected to the relay board. It is installed in 30. Like this, 2
One power supply path and two control signal paths are connected to the relay board 30.
If the relay substrate 30 is installed in the above, the relay substrate 30 becomes more multifunctional, and there is a possibility that the cost is reduced as compared with the case where each path is formed by a plurality of bundle lines. In addition, the controller 3 can be formed by simply connecting the power supply unit 26, the controller 31, etc.
1, all the power supply paths to the drive unit A 37 and the power supply unit 26, and all the control signal paths to the drive unit A 37 can be connected, so that the assemblability can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

Next, in the invention according to claim 6, the control unit 31 and the high-voltage power supply unit 33 are directly connected to each other, and the high-voltage power supply unit is provided on the relay board 30 in which a power supply path to the control unit 31 is installed. The power supply path to 33 is installed. By installing three power supply paths and two control signal paths on the relay board 30, the relay board 30 becomes more multifunctional, and the cost may be reduced compared to forming each path with a plurality of bundled wires. There is. Further, as in the above-mentioned invention, the assembling property can be improved.

According to the seventh aspect of the present invention, another driving unit B 39 is directly connected to the driving unit A 37, and the driving unit B 39 is connected to the relay board 30 in which a power supply path to the driving unit 37 is installed. A power supply path is installed. By installing four power supply paths and three control signal paths on the relay board 30, the relay board 30 becomes more multifunctional, and the cost may be reduced compared to forming each path with a plurality of bundled wires. There is. Further, as in the above-mentioned invention, the assembling property can be improved.

In the eighth aspect of the invention, the fixing means 22 is directly fitted to the power source section 26. Fixing means 22
By directly fitting the power supply unit 26 to the power supply unit 26, a bundle of wires from the power supply unit 26 to the fixing unit 22 is not necessary, and thus the cost can be reduced.

According to a ninth aspect of the present invention, the power source unit 26 is attachable / detachable in a substantially vertical direction with respect to the surface of the relay substrate 30 on which the connecting portion is installed. In this way, the power supply unit 2
Since 6 can be easily attached to and detached from the relay board 30,
The operability can be improved. Therefore, when the power supply unit 26 fails, the power supply unit 26 can be easily replaced.

FIG. 6 is a schematic view showing the arrangement of substrates other than the various substrates connected to the control substrate 31 by bundle wires or the like. The control board 31 includes a toner remaining amount detecting board 4 having a toner remaining amount detecting means for detecting a toner remaining amount in the toner replenishing means 16 provided in the second main body 200.
0 is connected via a bundle. The toner remaining amount detecting substrate 40 is a toner concentration detecting substrate (flexible substrate) for detecting the toner concentration of the developer in the developing tank of the developing means 14.
41, a jam detection substrate (flexible substrate) 42 for detecting a conveyance failure of the recording material P, and a light emission control P for the PCL 12.
The CL substrate 43 and the like are connected. The control board 31 includes a drive board 44 for controlling the driving of a transfer roller of the transfer means 20, a cleaning blade 251 of the cleaning device 25, and the like, and a laser diode light source of the exposure means 13. A laser driver substrate 45 for driving, an exposure scanning substrate 46 for driving and rotating the polygon mirror 131, and the like are connected by a bundle. An operation unit 47 is connected to the drive board 44 by a bundle line.

Referring again to FIG. 2, a convex electric terminal shell 51 is fixedly provided near the dividing surface of the first main body 100. Further, in the vicinity of the division surface of the second main body 200, a planar electric terminal B 52 that is connected to the electric terminal A 51 at a position where an image can be formed is fixedly installed.

The convex electric terminal shell 51 is installed on the second main body 200, and the electric terminal B 52 formed on the insulating film surface of the first main body 100 is attached to the elastic member 52C.
Installed through the first main body 100 and the second main body 2
When 00 is installed at a position where an image can be formed, the electric terminal A 51 may be pressed against the electric terminal B 52.

FIG. 7A shows the convex-shaped electric terminal shell 51.
7B is a front sectional view of the electric terminal instep 51. FIG. The electric terminal shell 51 includes a plurality of electrically conductive electric terminals 51A having a convex curved end shape and a plurality of electric terminals 5.
It is composed of an insulating substrate 51B that supports 1A and a bundled wire 51C that conducts to the plurality of conductive electric terminals 51A, and is installed on the support plate 110 of the first main body 100.

FIG. 8 (a) shows the above-mentioned planar electrical terminal B 52.
FIG. 8B is a side sectional view of the electric terminal B 52. The electric terminal B 52 is a flexible insulating film 5
It is composed of a plurality of flat conductive electric terminals 52A formed on 2B, and is installed on the support plate 210 of the second main body 200 via an elastic member 52C made of a resin material.

FIG. 9 is a side sectional view showing a state in which the electric terminal B 52 fixedly mounted on the second main body 200 is separated from the electric terminal shell 51 installed on the first main body 100.

FIG. 10 is a side sectional view showing a state in which the second main body 200 is connected to the first main body 100 and locked, and the electric terminal B 52 and the electric terminal A 51 are connected in an imageable state. is there. In this connected state, the tip of the electric terminal instep 51 presses the electric terminal B 52 to bend the insulating film 52B made of a flexible material, and the elastic member 5
2C is compressed and elastically deformed. In this way, electrical terminal Otsu 5
By installing 2 on the second main body 200 via the elastic member 52C, when the planar conductive electric terminal 52A comes into contact with the convex conductive electric terminal 51A fixedly mounted on the first main body 100, Even if pressed by the convex conductive electric terminal 51A, the planar conductive electric terminal 52A appropriately escapes in the opposite direction by the elastic member 52C, so that it is not crushed and plastically deformed, and the convex conductive electric terminal Electric terminal 51A
It is possible to ensure contact with.

FIG. 11 shows another embodiment of the electric terminal B 52, and FIG. 11A is a plan view of the electric terminal B 52, FIG.
1 (b) is a side sectional view of the electric terminal B 52.

In this electric terminal B 52, a slit 52D is installed between a plurality of planar conductive electric terminals 52A installed in parallel. By installing the slit 52D between the plurality of flat conductive electric terminals 52A arranged in parallel as described above, the convex conductive electric terminals 51A and the flat conductive electric terminals 52A come into contact with each other. Then, the influence of the movement of the planar conductive electrical terminal 52A is affected by the movement of the planar conductive electrical terminal 52A.
It is not necessary for A to receive, so that each of the electric terminals 52A can make good contact with each other.

12, FIG. 13, and FIG.
12A is a plan view of the electric terminal B 52, and FIG. 12B is a side cross-sectional view of the electric terminal B 52. FIG. 13 is a side sectional view showing a state in which the electric terminal B 52 fixedly mounted on the second main body 200 is separated from the electric terminal shell 51 installed on the first main body 100. In FIG. 14, the second main body 200 is the first main body 100.
FIG. 7 is a side sectional view showing a state in which the electric terminal B 52 and the electric terminal A 51 are connected to each other and locked in the image formable state.

Between the insulating film 52B and the elastic member 52C, a blocking member 52E for blocking the deformation of the planar conductive electrical terminal 52A is interposed. By installing the blocking member 52E for preventing deformation between the elastic film 52C and the insulating film 52B on which the planar conductive electrical terminal 52A is installed, the convex conductive electrical terminal 51A is provided. When pressed, the planar conductive electrical terminal 52A and the blocking member 52E both appropriately escape in opposite directions, so that the planar conductive electrical terminal 52A.
Is prevented from being crushed and plastically deformed, and it is possible to bring the planar conductive electrical terminal 52A into contact with the convex conductive electrical terminal 51A to such an extent that the planar conductive electrical terminal 52A is not deformed by the blocking member 52E. It is more effective than the embodiment.

[0057]

According to the first aspect of the present invention, since a plurality of bundled wires connecting the power supply unit and the control unit can be deleted, the work of bundling the bundled wires can be omitted and the assemblability can be improved. At the same time, it is possible to reduce the cost of the entire device. In addition, since all the paths can be connected only by directly connecting the power supply section and the relay board and the control section and the relay board, it is possible to save the labor of individually connecting the bundled connectors, and also in this respect, the assemblability is improved. Can be achieved. Regarding the problem of contact failure, if the power supply unit is not installed in the main body of the apparatus unless the power supply unit and the relay board are connected to each other, the contact failure can be prevented.

According to the second aspect of the present invention, by installing two power supply paths and one control signal path on the relay board, the relay board becomes multifunctional and a plurality of bundled lines form each path. May reduce costs than. Moreover, since all the power supply paths to the high-voltage power supply unit can be connected only by connecting the control unit to the high-voltage power supply unit and the control unit to the relay board, the assembling property can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

According to the third aspect of the present invention, all the power supply paths to the drive unit A can be connected only by directly connecting the power source unit and the drive unit A by the relay board, so that the assembling property can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. In addition, you can eliminate multiple bundles,
It is possible to save labor such as bundling the bundled wires.

According to the invention described in claim 4, by installing two power supply paths on the relay board, the drive unit A and the drive unit B according to claim 3 and the drive unit A and the relay substrate according to claim 3 are provided. All power supply paths to the drive unit B can be connected just by connecting them, which can improve the assemblability.
Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

According to the invention of claim 5, by installing two power supply paths and two control signal paths on the relay board, the relay board becomes more multifunctional than the inventions of claims 1 to 4. Therefore, the cost may be reduced as compared with the case where each path is formed by a plurality of bundle lines. Moreover, the controller, by simply connecting the power supply unit, the controller, etc. to the relay board,
Since all the power supply paths to the drive unit instep and the power supply section and all control signal paths to the drive instep can be connected, the assemblability can be improved. Moreover, since a plurality of connectors are not individually connected, it is possible to reduce the possibility of poor contact. Furthermore, since a plurality of bundled lines can be eliminated, it is possible to save labor such as bundling the bundled lines.

According to the invention described in claim 6, by installing three power supply paths and two control signal paths on the relay board, the relay board becomes more multifunctional and each path is formed by a plurality of bundled lines. May reduce the cost than doing. Further, as in the above-mentioned invention, the assembling property can be improved.

According to the invention described in claim 7, by installing four power supply paths and three control signal paths on the relay board, the relay board becomes more multifunctional and each path is formed by a plurality of bundled lines. May reduce the cost than doing. Further, as in the above-mentioned invention, the assembling property can be improved.

According to the invention described in claim 8, by directly fitting the fixing device to the power supply unit, a bundle of wires from the power supply unit to the fixing device is not required, so that the cost can be reduced.

According to the ninth aspect of the invention, since the power source section can be easily attached to and detached from the relay board, the operability can be improved. Therefore, when the power supply unit fails, the power supply unit can be easily replaced.

According to the tenth aspect of the present invention, the flat electric terminal is installed on the main body of the apparatus through the elastic member, so that when the flat electric terminal comes into contact with the convex electric terminal, Even if pressed by the electric terminal, the planar electric terminal escapes in the opposite direction due to the elastic member, so it is possible to secure contact with the convex electric terminal without being crushed and plastically deformed. is there.

According to the eleventh aspect of the present invention, when a blocking member for preventing deformation is installed between the elastic member and the film on which the flat electric terminal is installed, when the flat electric terminal is pressed against the convex electric terminal. Since both the planar electric terminal and the blocking member appropriately escape in opposite directions, the planar electric terminal is not crushed and plastically deformed, and the planar electric terminal is not deformed by the blocking member. Since it can be brought into contact with the convex electric terminal, it is more effective than the first aspect.

According to the twelfth aspect of the present invention, by providing a slit between a plurality of planar electric terminals installed in parallel, when the convex electric terminal and the planar electric terminal come into contact with each other, The influence of the movement of the planar electric terminal does not have to be received by the planar electric terminal installed next to the planar electric terminal, so that the respective electric terminals can make good contact with each other.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a color image forming apparatus (color printer) as an example of an image forming apparatus according to the present invention.

FIG. 2 is a configuration diagram of the image forming apparatus with the apparatus main body being divided and opened.

FIG. 3 is a perspective view showing an arrangement of a plurality of substrates housed in the first main body.

FIG. 4 is a plan view showing an arrangement of the plurality of substrates.

FIG. 5 is a schematic diagram showing an arrangement of the plurality of substrates.

FIG. 6 is a schematic diagram showing an arrangement of boards other than the above, which are connected to the control board by bundle wires or the like.

7A and 7B are a side sectional view and a front view of a convex electric terminal instep.

FIG. 8 is a front view and a side sectional view of a planar electric terminal B.

FIG. 9 is a side cross-sectional view showing a state in which the electric terminal B and the electric terminal A are separated from each other.

FIG. 10 is a side sectional view showing a state in which the electric terminal B and the electric terminal A are connected.

FIG. 11 is a plan view and a side sectional view showing another embodiment of the electric terminal B.

FIG. 12 is a plan view and a side sectional view showing still another embodiment of the electric terminal B.

FIG. 13 is a side cross-sectional view showing a state in which the electric terminal B is separated from the electric terminal instep.

FIG. 14 is a side sectional view showing a state in which the electric terminal B and the electric terminal A are connected.

[Explanation of symbols]

22 Fixing Means 26 Power Supply Unit (Power Supply Section) 27, 28, 29, 32, 34, 36, 38 Connection Section (Connector) 30 Relay Board 31 Control Board (Control Section) 33 High Voltage Power Supply Section 35 Print Controller 37 Drive Section A 39 Drive part B 51 Electric terminal A 51A Conductive electric terminal 51B Insulating substrate 52 Electric terminal B 52A Conductive electric terminal 52B Insulating film 52C Elastic member 52D Slit 52E Blocking member 100 First device body (first body) 110, 210 support plate 200 second device body (second body)

Claims (12)

[Claims] 1. An image forming apparatus having at least a power supply section for supplying electric power to each section in the image forming apparatus and a control section for controlling the operation of the image forming apparatus itself, wherein the power supply section and the control section are provided. And a power supply path from the power supply section to the control section and a control signal path from the control section to the power supply section are installed on the relay board. A characteristic image forming apparatus. 2. The connection part of the high-voltage power supply part is directly connected to the connection part of the control part, and a power supply path from the power supply part to the high-voltage power supply part is installed in the relay board and the control part. The image forming apparatus according to claim 1, wherein the image forming apparatus is provided. 3. A power supply unit that supplies power to each unit in the image forming apparatus, a drive unit A having a drive motor that drives each unit in the image forming apparatus, and power supply from the power supply unit to the drive motor. In the image forming apparatus in which the path is installed, the power supply unit and the drive unit upper part has a relay substrate that is directly connected by a connecting unit, and the power supply path from the power source unit to the drive unit upper part is An image forming apparatus, which is installed on a relay board. 4. A power supply unit for supplying power to each unit in the image forming apparatus, a drive unit having a drive motor for driving each unit in the image forming apparatus, and a power supply from the power supply unit to the drive motor. In the image forming apparatus in which a route is installed, another drive unit B is directly connected to the drive unit A by a connection unit installed mutually, and a power supply route from the power supply unit to the drive unit B Is installed on the relay board and the drive unit instep. 5. A drive having at least a power supply unit that supplies electric power to each unit in the image forming apparatus, a control unit that controls the operation of the image forming apparatus itself, and a drive motor that drives each unit in the image forming apparatus. In an image forming apparatus in which an upper part and a power supply path from the power supply part to the drive motor are installed, a relay board that directly connects the power supply part, the control part, and the drive part upper part with a connection part is provided. From the power supply section to the control section, the control signal path from the control section to the power supply section, and the power supply path from the power supply section to the drive section A and the control section. An image forming apparatus, wherein a control signal path B to the drive unit A is installed on the relay board. 6. The control unit and the high-voltage power supply unit are directly connected to each other through a connection unit installed, and a power supply path from the power supply unit to the high-voltage power supply unit is installed in the relay board and the control unit. The image forming apparatus according to claim 5, wherein the image forming apparatus is provided. 7. Another drive unit B is directly connected to the drive unit A by a connection unit installed mutually, and a power supply path from the power source unit to the drive unit B is the relay board and the drive unit. The image forming apparatus according to claim 5 or 6, wherein the image forming apparatus is installed on the instep A, and a control signal path from the control section to the drive section B is installed on the relay board and the instep drive section. 8. The fixing device for fixing a toner image on a recording paper is directly connected to the power supply unit by a connection unit installed to each other. The image forming apparatus according to item 1. 9. The power supply unit according to claim 1, wherein the power supply unit is attachable / detachable in a direction substantially perpendicular to a surface on which the connection portion of the relay board is installed. Image forming apparatus. 10. An image forming apparatus comprising: a first apparatus main body fixedly installed; and a second apparatus main body divided and movable with respect to the first apparatus main body, wherein the first apparatus main body A convex electric terminal instep is installed on the second device main body, and the electric terminal B formed on the insulating film surface is installed on the second device main body through an elastic member, or the second terminal main body is formed into a convex shape. The electric terminal A is installed, and the electric terminal B formed on the insulating film surface is installed on the first device body via an elastic member, and the first device body and the second device body are An image forming apparatus characterized in that, when installed at a position where an image can be formed, an electric terminal B is pressed against the electric terminal A via an elastic member. 11. An insulating film for the electric terminal B,
11. A blocking member for blocking the deformation of the electric terminal B is provided between the elastic member and the elastic member.
An image forming apparatus according to claim 1. 12. A plurality of convex terminals are arranged in parallel on the insulating substrate on the electric terminal A, and a plurality of electric terminals formed on the insulating film surface are formed on the electric terminal B by slits. The image forming apparatus according to claim 11, wherein the image forming apparatus is divided and arranged in parallel.