JPH066342Y2 - Power supply device for optical exposure system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a power feeding device in an optical system movable exposure apparatus such as a copying machine, and more specifically, to a light source frame having a light source for projecting light on a document surface, Optical system movable exposure in which a mirror frame provided with a mirror for projecting light reflected from the document surface onto the surface of the photoconductor is provided in the same direction and the light source frame is reciprocally movable at double speed of the mirror frame. The present invention relates to a power supply device in a device.

[Conventional technology]

It is needless to say that the feeder line for power feeding from the power feeding unit of the copying machine main body of the optical system movable exposure apparatus to the power receiving unit of the light source frame needs to have a length and flexibility that allow movement of the light source frame over the maximum exposure range.

When the light source frame is moved, in order to prevent the feeder line for power supply from swinging and being caught by another object, a feeder wire winding tool is provided on a mirror frame that moves at a speed twice that of the light source frame. The power supply feeder wire is wound around the winding tool.

By the way, the above-mentioned feeder line for power supply has lower flexibility as the ambient temperature becomes lower. Therefore, when the temperature inside the machine is low, the feeder line for power supply has a shape wound around a winding tool. When the mirror frame is moved, the power feeding feeder line guided by the winding tool is not smoothly bent, and the power feeding feeder wire is bent at a corner. When it is guided to the power feeding feeder line, the feeder line moves distortedly and is guided to the wrapping tool, which in turn causes a so-called character blurring due to a shock being applied to the mirror frame. .

[Problems to be solved by the invention]

Therefore, conventionally, as seen in Japanese Utility Model Laid-Open No. 61-13844, one end side of a feeder line for power supply is fixed to a light source frame, and the feeder line for power supply is wound around a feeder line winding device of a mirror frame. Further, the other end side of the power feeding feeder line is held by the main body of the copying machine through an elastic member, and the shock of the mirror frame due to the distorted movement of the power feeding feeder line due to the decrease in flexibility is The elastic member absorbs the so-called character blurring.

However, in order to elastically hold the other end side of the power feeding feeder line, an elastic member, a member for holding one end of the elastic member by the power feeding feeder line, and the other end of the elastic member are copied. There is room for improvement in that it requires three parts of a supporting member for supporting the main body of the machine and is costly.

The present invention has been devised in view of such circumstances, and an object thereof is to provide a power supply device having a function equivalent to that of the conventional character blur elimination with an extremely rational structure and at a low cost.

[Means for solving problems]

In order to achieve the above object, the present invention provides a power feeding feeder line extending between a power receiving portion on the side of a light source frame and a power feeding portion on the side of a copying machine, which is reciprocally movable at a double speed with respect to the mirror frame. A feeder wire wrapping member, which is fixed to each of the copying machine bodies and is made of a plate spring that can be bent and deformed in the moving direction of the mirror frame, is attached to the mirror frame, and the feeder wire wrapping device is used for supplying power to the feeder wire wrapping member. The feature is that the feeder wire is wound.

[Action]

According to the above-mentioned characteristic configuration, the ambient temperature becomes low and the flexibility of the feeder line for feeding decreases, so that the feeder frame for the feeder is caught on the mirror frame when it is not bent smoothly around the winding tool. The shock is absorbed by the feeder wire wrapping device having the leaf spring configuration.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a main part of an optical system movable exposure apparatus A and a drive apparatus B for the optical system, and FIG. 2 shows an outline of the entire copying machine. In this copying machine, a photoconductor 4 is horizontally mounted on a copying machine main body 3 having an original pressing member 2 for a contact glass 1 on an upper portion thereof, and a charging unit 5 and a developing unit 6 are provided around the photoconductor 4. , Transfer unit 7, copy paper separating unit 8, cleaning unit 9
Are arranged in that order in the rotation direction R of the photoconductor, and an exposure apparatus A of a movable optical system is provided in the lower space of the contact glass 1, and the copy paper in the cassette case 10 is conveyed to the transfer unit 7. A sheet feeding / conveying device 11, a sheet ejecting / conveying device 13 for conveying the separated copy sheet to the fixing device 12, and a pair of sheet ejecting rollers 15 for ejecting the fixed copy sheet to the tray 14.

As shown in FIG. 1, the exposure apparatus A includes a light source 16 for projecting light on the document surface S, a main mirror 17, and a first mirror 18 for projecting light reflected from the document surface S in the arrow direction P. Light source frame X provided
And a mirror frame Y provided with second and third mirrors 19 and 20 for reflecting the light reflected from the document surface S twice and projecting it in the arrow direction Q opposite to the arrow direction P. , A fourth mirror which is provided so as to be reciprocally movable in the arrow directions P and Q, and which reflects and projects the reflected light from the third mirror 20 toward the surface of the photoconductor 4.
21 and a condenser lens 22 are arranged.

The optical system driving device B includes the light source frame X and the mirror frame Y.
Two path inflection rotating bodies 23, 24 are provided in a portion outside the reciprocating range of (1), and an intermediate rotating body 25 and a rotating body 26 connected to a motor (not shown) are arranged. Mirror frame Y
While the idle rotation body 27 is attached to one side, one end of the transmission line 28 is fixed to a fixing portion 29 on the copying machine main body 3 side, and the idle rotation body 27 and one of the path inflection rotation bodies 23 and the intermediate rotation body are attached. 25 and the rotary body 26 and the other path inflection rotary body 24 are wound in that order, and the transmission line 28 is attached to the light source frame X via the fastening body 30, and the transmission line 28 is again attached. Free-turning body 27
The light source 16 reaches the condenser lens 22 in accordance with the forward and reverse rotation of the motor (not shown). Set the light source frame X to the mirror frame Y so that the optical path length is always constant.
It is designed to reciprocate in the same direction at double speed.

Now, next, the power feeding device C for the reciprocating light source 16
This will be described with reference to FIGS. 1 and 3 and 4 in which the light source frame X is attached to the front end portion of the light source frame X in the direction in which the light source frame X is relatively separated from the mirror frame Y. While the power receiving portion 32 connected to the 16 is attached, a bracket 33 extending in the relative separating direction beyond the light source frame X is continuously provided to the mirror frame Y, and the tip end of the bracket 33 is attached to the frame support rod 34. A feeder wire wrapping device (35) is provided at the tip of the bracket (33) to be supported.

When the exposure device A is at the home position, the power feeding portion 36 is provided in the copying machine body 3 near the lower portion of the mirror frame, and the power feeding feeder wire 37 is wound around the feeder wire winding tool 35. , The power feeding feeder wire 37 is electrically connected to the power feeding portion 36 and the power receiving portion 32 on the light source frame X side, and is stretched to such an extent that the power feeding feeder wire 37 does not bend in the wound state. In addition, the feeder line 37 for power supply is fixed to the copying machine main body 3 by the fastening members 38, 38.
It is fixed to.

The bracket 33 includes a horizontal plate portion 33a and a plate portion 33 having an upward opening extending forward from the horizontal plate portion 33a in the relative spacing direction.
b, and a vertical plate portion 33c that closes the front opening of the upward opening plate portion 33b. Of these, the vertical plate portion 33c serves as a support member for the frame support rod 34, and the horizontal plate portion 33a is It serves as a supporting member for preventing the power feeder line 37 from hanging down.

On the other hand, the feeder wire wrapping device 35 has a metal leaf spring structure, and has a horizontal portion 35a and a curved portion 35b of a semicircle or more extending downward from the front end of the horizontal portion 35a. The horizontal portion 35a is spot-welded to the front lower surface portion of the horizontal plate portion 33a of the bracket 33, and is configured to be bendable and deformable in the moving direction of the mirror frame Y.

The detachment prevention members 39, 39 of the feeder wire 37 for power supply wound around the curved portion 35b are provided on the brackets so as to correspond to both sides of the curved portion 35b of the feeder wire winding tool 35.
It is provided in 33.

According to the power feeding device C having the above-described configuration, the flexibility of the power feeding feeder line 37 is lowered due to the low temperature inside the machine, and the power feeding feeder line guided by the winding device 35 is moved when the mirror frame Y is moved. Even if the feeder wire for power supply is smoothly bent and is distorted in a bent state to be guided to the winding tool, the distorted movement of the feeder wire 37 for power supply is caused by the winding tool. The shock due to the distorted movement is not applied to the mirror frame Y, and so-called character blurring due to the shock can be avoided.

In the embodiment, the feeder wire wrapping device 35 is made of metal, but it may be made of synthetic resin.

Further, the detachment preventing members 39, 39 of the feeder line 37 for feeding
Is provided separately from the feeder wire wrapping tool 35, but the disengagement prevention members 39, 39 may be integrally connected to the feeder wire wrapping tool 35. In this case, the entire curved portion 35b is provided. It is not necessary to provide them in correspondence with each other, and it is sufficient to connect them to a very small part of the curved portion 35b as shown in FIG. 5, for example.

[Effect of device]

INDUSTRIAL APPLICABILITY As described above, the present invention effectively uses the feeder wire wrapping device provided to prevent the power feeding feeder wire from swinging and catching on another object. It is characterized by the fact that it is composed of a flexibly deformable leaf spring, and even if the ambient temperature becomes low and the flexibility of the feeder line for feeding decreases and the feeder line for feeding moves distorted The distorted movement of the feeder line can be absorbed by the bending of the wrapping tool, and it is possible to avoid so-called character blurring caused by shocking the mirror frame.

Moreover, since the winding tool necessary for winding the feeder wire is used, the three parts required conventionally, namely,
An elastic member for elastically holding the feeder line for feeding, a member for holding one end of the elastic member by the feeder line for feeding, and another end for supporting the other end of the elastic member on the main body of the copying machine. Since the three parts of the support member are not necessary, the power supply device having the same function as that of the conventional character blur elimination can be cost-effectively provided with the rational configuration using the feeder wire wrapping tool which is originally required. It was possible to offer it at low cost.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an exposure device and a drive device, and FIG.
FIG. 3 is a schematic vertical sectional view of the entire copying machine, FIG. 3 is a side view of a power feeding device shown together with an exposure device, FIG. 4 is an exploded perspective view of a main part of the power feeding device, and FIG. 5 is a feeder wire winding of another embodiment. It is a perspective view of a hanging tool. 3 ... Copier body, 32 ... Power receiving part, 35 ... Feeder wire wrapping device, 36 ... Power feeding part, 37 ... Feeder wire for power feeding, X
...... Light source frame, Y …… Mirror frame.

Claims (1)

[Scope of utility model registration request] 1. A feeder line for power supply, which extends between a power receiving portion on the side of a light source frame and a power feeding portion on the side of a copying machine body, which is reciprocally movable at a double speed with respect to a mirror frame, is fixed to each of the light source frame and the copying machine body. At the same time, a feeder wire winding tool made of a leaf spring that is bendable and deformable in the moving direction of the mirror frame is attached to the mirror frame, and the feeder wire winding tool is wound around the feeder wire winding tool. A power feeding device in an optical system movable exposure apparatus, which is characterized in that