JPS6064369A - Electrostatic charge device - Google Patents

Abstract

PURPOSE:To insert and connect the terminal of an electrostatic charge part easily by providing movably a conductor which has a connection port for an electric feeding part, and moving the conductor when the terminal is inserted so that the terminal is led in the connection port. CONSTITUTION:An electrode 82 connected to a high voltage transformer is provided to the bottom surface part of a connector 81 as the electric feeding part. An electrode plate 84 having the connection port 83 in the center is provided in the connector 81, and this electrode plate 84 is connected to the electrode 82 through a spring body 85. The connector 81 is fitted in a fitting hole bored in the frame 86 of a copying machine through a holder 88. The electrode plate 84 is pressed and held movably in the holder 88 with the elastic force of a spring body 85. The electrode plate 84 when pressed by the terminal 91 moves at right angles to its insertion direction to enter the connection port 83.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a charging device that is installed in, for example, an electronic copying machine and generates corona discharge.

[Technical background of the invention and its problems]

As this type of charging device, for example, the one shown in FIG. 1 is known. That is, 1 in Figure 1 is a connector fixedly attached to the frame b of the copying machine body, and a charger terminal d is inserted into the connection port C of this connector a, and a charger wire e is electrically connected. .

Therefore, charger wire 〇 is energized from connector 1 through charger terminal d.

As a result, a corona discharge is generated to uniformly charge the surface of a photoreceptor (not shown) in preparation for image exposure.

However, in the past, S was fixedly provided at the connection port C1 of the upper white C connector a.

For example, when the charger body f is shifted in order to adjust the charging part for the photoreceptor, the connector a must also be shifted and adjusted at the same time, otherwise the charger terminal dt cannot be inserted into the connection port C. there were. Also.

If there is even a slight misalignment between the connection port C and the charger terminal d, there are drawbacks such as poor insertion and poor operability, and uneven contact of the charger terminal 4, which may cause charging failures.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances.

The purpose is to provide a nine-charging device in which the terminal can be easily inserted and connected even if the connection port of the power feeding section and the terminal of the charging section are misaligned.

[Summary of the invention]

In order to achieve the above object, the present invention provides a movable conductor having a connection port for a power feeding section, and moves the conductor so that when a terminal of a charging section is inserted, the terminal introduces the terminal into the connection port. It is.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Figures 2 to 4 show external parts of an electronic copying machine to which the paper feeding device of the present invention is applied. The paper feed cassette 3 is a paper discharge tray installed on the left side of the main body l of the copying machine. The upper surface of the copying machine body I is provided with a document table 4 that can freely move back and forth in the left-right direction (in the direction of arrow a), and the front edge of the upper surface of the copying machine body I is provided with a display 5. and an operation panel I with input keys 9, etc., consisting of a numeric keypad 6, an exposure setting volume ζ print key 8, etc.
O is provided.

As shown in FIG. 3, the document table 4 has a structure including a document placing plate (glass plate) 12 on which the document II is placed and a document cover 13 covering the upper surface thereof.

Further, the cassette cover 14 of the paper feed cassette 2 has a fourth
Paper P1 as shown in the figure? 11- This is a manual paper feed tray Z5 for manually feeding paper as needed. Note that 16 shown in FIG. 2 is a power switch.

Next, the internal mechanism of the electronic copying machine will be explained with reference to FIG. In the figure, 20 is a drum-shaped photoreceptor disposed approximately in the center of the main body I of the copying machine.

The photoreceptor 20 is driven in the direction indicated by a drive mechanism (not shown) in synchronization with the document table 4. first.

The original image, which is uniformly charged by the charging device 2X and uniformly irradiated by the exposure lamp 22, is imaged on the photoreceptor 20 by the focusing light transmitter (trade name: Self-Oak Lens Play) 23, and the electrostatic latent image is formed on the photoreceptor 20. It is designed to form an image. The formed electrostatic latent image is turned into a toner image by the developing device 24 and sent to the transfer charger 25 side.

Automatically or manually fed paper P or P' is fed by a paper feeding device 26, and a toner image previously formed on the photoreceptor 20 is transferred onto the paper P or y by a transfer charger 25.

Furthermore, the toner image is peeled off from the photoconductor 20 by a peeling charge 22 caused by AC corona discharge, passes through a conveyance path 28, is fused and fixed onto the paper P by a fixing device 29, and is discharged onto a removable tray 3 by a discharge roller 30. be done.

10,000, after transferring the toner image onto the paper P (F), the photoconductor 2
The residual toner remaining on the photoreceptor 20 is cleaned by a cleaning device 31, and the electric potential on the photoreceptor 20 is lowered to a certain level or less by a static elimination lamp 32, thereby making it ready for the next copying operation.

A fan 33 serves as a cooling device, and exhausts heat generated from the heat-generating exposure lamp 22 and the fixing device 29 inside the machine. Further, an exhaust fan 36 is also attached to the main motor 35 to cool down the heat generated by the power supply section 34 and the like.

Inside the copying machine main body 2, an upper frame and a lower frame (not shown) are pivotally supported at one end via a support shaft 32, and the other ends of both frames can be opened at a desired angle, for example, 301'. ing. The upper frame is provided with a charging charger 21 around the photoreceptor 20. Focusing light transmitter 23, M light lamp 22. Developing device 24. Cleaning device S
X, a static elimination lamp 32, and other devices are attached by appropriate means, and a fan 33.X as a cooling device is installed. The paper feeding roller 38 of the paper feeding device 26 and the document table 4 are also attached to the frame and constitute one upper unit. There is a paper cassette 2 in the frame above the father. Transfer charge 25° Peeling charger 26. Conveyance path 2B, temporary guide for formation 39. Fixing device 29. Each mechanism such as the pair of discharge rollers 30 DEG tray 3, the main motor 36, the power supply section 34, etc. are attached by appropriate means to form a lower unit (ZB'i). The front cover 1a' of the copying machine main body L is configured to be opened and closed approximately along the transport path 2B of the paper P (F) via a housing opening/closing device (not shown) after being removed by rotating the front cover 1a'H. be. Therefore, even if the paper P(P')l) becomes jammed on the transport path 28, it can be easily taken out.

Note that s 61'ff 50.50 in the figure 5 corrects the inclination of the leading edge of the paper P that is automatically fed from the paper feed cassette 2 or the paper P' that is manually fed, and also transfers toner to the photoreceptor 20. The paper P is aligned with the timing r of the image forming operation.
Or P'? A pair of registration rollers 51 are supplied toward the transfer charger 26, and 51 is a pair of registration rollers 50.
This is a manual feed detection switch placed just before the GO.

52 is a paper discharge switch, 53 is a total counter, 54 is a paper empty switch that detects when the paper P in the paper cassette 2 is empty, and 56 is a developing device 2.
4, a doctor regulating the thickness of the developer layer; 56, a toner hopper; 52, a toner-out detection switch; 58, a toner concentration detector; It has become.

Further, 60 is a high voltage transformer, 6Z is a static elimination brush, 62 is a handle formed for opening and closing the unit 4, 63 is a reflector surrounding the back of the exposure lamp 22, and 64 is an auxiliary reflector.

Reference numeral 65 is a weight for bringing a cleaning blade 66 of the cleaning device into contact with the photoreceptor 20 at a constant pressure, and a solenoid (not shown) causes the blade to move toward and away from the photoreceptor.

Note that the reflector 63S, the auxiliary reflector 64, and the convergent light transmission body 23 are assembled as one unit.

Further, the paper feed device 26 provided at the lower right side of the copy main body 1 has a paper feed cassette 2 and a paper ejection phase opening yr5 provided with separating claws yo and yo on the upper surface side of the paper feed cassette 2. It has a configuration including a manual paper feed tray 15 formed on a cassette cover 72 that covers the paper feed tray 15, and a paper feed roller 38 that takes out and supplies paper P from the paper feed cassette 2.

The charging device 2Z is constructed as shown in FIGS. 6 and 7. That is, 81 in FIG. 1 is a connector serving as a power supply section, and an electrode 82 connected to a high voltage transformer (not shown) is provided on the bottom surface of this connector 81.

Furthermore, inside this connector-8IO, there is a connection port 8 in the center.
An electrode plate 84 as a conductor having a conductivity of 3 is provided, and this electrode plate 84 is connected to the electrode 82 via a spring body 85 having electrical conductivity. This connector 81 is attached to a mounting hole 82 formed in a frame 86 of the copying machine via a transparent holder 88. The electrode plate 84 is pressed and held against the holder 88 in a movable state by the pressing force of the spring body 85, and is movable in all directions upward, downward, left, and right. Furthermore, an insertion hole 89 is bored in the center of the holder 88 and communicates with the connection port 83 of the electrode plate 84 . Then, a charger 90 serving as a charging portion is electrically connected to the connector 81 configured as described above by inserting its terminal 9K into the connection port 83 of the electrode plate 84 through the insertion hole 89 of the holder 88. . A charger wire 92 is connected to the terminal 91, and the charger wire 92 is stretched within a charger body 93.

During charging, a voltage is applied to the electrode 82 from the high voltage transformer, and a current flows to the charger wire 92 via the spring body 85, the electrode plate 84, and the charger terminal 911, causing corona discharge on the surface of the photoreceptor 200. will be charged uniformly.

By the way, when adjusting the amount of charge on the photoreceptor 20, the charger 90 needs to be shifted according to the adjustment amount, and in the shifted state, the terminal 91 is inserted into the connection 83 of the electrode plate 84 of the connector 81. If you try to insert it, the terminal 91 will come into contact with the outer peripheral edge of the connection port 83, but
The electrode plates 84 are arranged at the top, bottom, and left as described above.

Since it is movable to the right, when pressed by the terminal 91, it moves in a direction perpendicular to the insertion direction, thereby introducing the terminal 9K into the connection port 83.

In this way, even if the connection port 83 of the electrode plate 84 and the charger terminal 9 are misaligned, the charger terminal 9K can be introduced into the connection port 83 by moving the electrode plate 84.
There is no need to take the trouble to adjust the position of the electrode plate 81 itself, making it easier to adjust the amount of charge.
Good charging is possible without causing improper insertion of the charger terminal 91 or uneven contact.

〔Effect of the invention〕

As explained above, the present invention provides a movable conductor having a connection port for the power supply section, and moves the conductor so that the terminal is introduced into the connection port when the terminal is inserted. Even if a misalignment occurs between the charging section and the terminal of the charging section, the terminals can be electrically connected without changing the position of the power feeding section itself. Therefore, unlike conventional methods, there is no need for special work to correct deviations during charge amount adjustment, etc., and it is extremely easy to use, and there are no terminal connections or uneven contact, and good charging is possible. This has the effect of becoming.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a conventional example, Figs. 2 to 7 show an embodiment of the present invention, Figs. 2 to 4 are perspective views showing an electronic copying machine, and Fig. 5 6 is a side sectional view showing the charging device, and FIG. 7 is an exploded perspective view showing the power feeding section. 8Z--power supply part (connector 83...connection port; 84--conductor J electrode plate λ90-charging part [charger], 91...terminal.

Claims (1)

[Claims] 1. A power feeding unit, a good conductor provided in the power feeding unit and having a connection port, and a charging unit electrically connected by inserting a terminal into the connection port of the conductor. 2, wherein the conductor is movably supported so as to introduce the terminal into the connection port when the terminal is inserted. 2. The charging device according to claim 1, wherein the conductor is elastically biased toward the terminal.