JPH02201437A - Image forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus, and in particular, a mirror unit disposed between a condensing lens and an exposure table for converting an optical path. The present invention relates to an image forming apparatus in which focus and the like can be easily adjusted by adjusting the position in the direction.

[Conventional technology]

Generally, an image forming apparatus includes a mirror unit U shown in FIG. 5.6, which is disposed between a condensing lens and an exposure table to convert the optical path, and supports the mirror unit U so that its position can be adjusted. Mirror unit support part! fS. The mirror unit U has a mirror 51 attached obliquely to a frame 50, and this frame 50 is attached to holders 52, 53 so as to be movable up and down or tiltable. This type of conventional mirror unit support device S is
A support member 61a supports two points on the bottom surface of the frame 50 spaced apart in the width direction of the mirror unit.

61b, and an operating member 62 that is connected to the support members 61a, 61b and operates the support members 61a, 61b, and both are connected by a shaft 63.

When adjusting the position of the mirror unit U placed on the support member 61 supported at two points, first, the other support member 61a is moved around the shaft 63 using the roller 61c of the support member 61b on the right side in the figure as a fulcrum. By rotating the mirror unit U, the inclination in the width direction of the mirror unit U is adjusted, and the operating member 62 is operated to move the entire mirror unit U up and down to focus.

[Problem to be solved by the invention]

Generally, the focus of an image is determined near the center of the mirror,
In the focus adjustment method described above, the center of rotation of the mirror unit is far away from the center of the mirror, so when the tilt (θ) of the unit is adjusted, the center of the mirror shifts in the height direction at this stage of adjusting the tilt. Therefore, there is a problem in that the image at the center of the mirror becomes blurred and vertical adjustment has to be made again.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an image forming apparatus that solves the problems of the above-mentioned conventional techniques and allows easy adjustment of the height and tilt of a mirror unit. .

[Means to solve the problem]

In order to achieve the above object, the present invention provides an image processing system in which a mirror unit, which is disposed between a condensing lens and an exposure table and is used to convert an optical path, is supported by a mirror unit support device in a position-adjustable manner. In the forming device, the mirror unit support device includes a support member that supports two points spaced apart in the width direction of the mirror unit, and is connected to the support member, and operates the support member and rotates with respect to the fixed frame. an actuating member that is movably supported, the supporting member has a supporting arm that supports the two points of the mirror unit, the actuating member has a rotating arm that rotates it, and the supporting arm A connecting portion provided on the actuating member is engaged with a connecting portion that connects the two members, and the connecting portion of both members is pivotally connected at a position corresponding to approximately the center position in the width direction of the mirror unit. The inclination of the mirror unit in the width direction is adjusted by rotating the supporting member relative to the operating member and fixing both connecting portions, and the height of the mirror unit is adjusted by rotating the operating member in the first direction. The feature is that the height can be adjusted.

[Effect]

According to the present invention, the connecting portion of the supporting member is connected to the connecting portion of the operating member so as to be rotatable about the rotation center axis, so that when adjusting the inclination of the reflecting mirror by tilting the mirror unit, , the center point does not move up and down, so if the optical axis of the condensing lens is aligned here, there will be no deviation in the vertical adjustment during the tilt adjustment stage, as in the past. This adjustment can be made extremely easily.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image forming apparatus according to the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates the main body of the copying machine. At the top of the copying machine main body 1, a document table glass 2 on which a document can be placed and a cover 3 that covers the document table glass 2 in an openable and closable manner are disposed so as to be movable from side to side. Original table glass 2
Below is a halogen lamp 4 that extends in a direction perpendicular to the direction of movement of the document glass 2 and irradiates light onto the original on the document glass 2, and directs the light from the halogen lamp 4 toward the document glass 2. A light source 6 consisting of a reflecting mirror body 5 is provided. When the document table glass 2 is moved from side to side while the light source 6 is emitting light, the entire document is irradiated with light.

Further, an exposure table 7 is disposed in the center of the interior of the copying machine body 1, and between this exposure table 7 and the light source 6, a filter 8 for adjusting the color tone of the copied image and a light collecting device are provided. A lens 9 is mounted and supported by a plate 10, and a pair of reflective mirrors 11 for adjusting the optical path length and focus are mounted and supported by a plate 12 so that their positions can be adjusted between the lens 9 and the exposure table 7. has been done. The light reflected from the original after being irradiated onto the original is passed through a filter 8, a lens 9, and each reflecting mirror 1.
1 and is guided to the exposure table 7.

Further, a cassette 28 for storing microcapsule paper 13 is removably housed inside the copying machine main body 1, and a winding roller 15 is rotatably supported. A long photosensitive pressure sensitive recording medium carrying a large number of microcapsules containing dye for color copying, that is, a long microcapsule paper 13 is wound around the winding core 14 . This microcapsule paper 13 has multiple feed rollers 16
It is pulled out from the cassette 28 by the rotation of , and then wound up on the take-up roller 15 . During this time, a portion of the microcapsule paper 13 that has passed under the exposure table 7 is exposed to light, and a latent image of the original is formed there.

Below the exposure table 7, a developer paper cassette 18 containing a sheet of developer paper 17 having a certain size is removably attached to the copying machine main body 1.
A pressure developing device 19 is disposed between the winding roller 15 and the winding roller 15 . Here, the exposed portion of the microcapsule paper 13 and the color developer paper 17 are brought into pressure contact, whereby a color image based on the latent image on the microcapsule paper 13 is formed on the color developer paper 17. The color developer paper 17 is made by coating a color developer on a base material and forming a heat-melting surface resin layer on the color developer.The base materials are paper with a small heat capacity and PET (with a high heat capacity). polyethylene terephthanol), etc. Further, the color developer paper cassette 18 is provided with a protrusion 18g for determining the size of the color developer paper 17, and this protrusion 18g is provided in the main body 1.
A determining device 20 is provided which determines the size of the color developing paper 17 by determining the size of the color developing paper 8a.

A plurality of feed rollers 21 and paper guides 25 are provided between the developer paper cassette 18 and the pressure developing device 19 for transporting the developer paper 17 toward the pressure developing device 19. A peeling roller 22 for peeling the developing paper 17 from the microcapsule paper 13 is provided on the side. A sheet heating device 23 for fixing the image formed on the developer paper 17 by heat is disposed on the paper feeding side of the peeling roller 22, and the developer paper 17 discharged from the sheet heating device 23 is placed on a tray 24. be accommodated.

When making a color copy using this copying machine, when the start button (not shown) is operated, the document table glass 2 is moved to the right edge, and the left edge of the document is placed opposite the halogen lamp 4 of the light source 6. , the halogen lamp 4 is turned on, and in this state the document table glass 2 is moved back to the left,
Irradiation of light onto the original ends.

During this light irradiation, the microcapsule paper 13 is moved toward the winding side on the exposure table 7 at the same speed as the document table glass 2. Therefore, a latent image of the original is formed on the microcapsule paper 13 by the reflected light from the original. The developer paper 17 is transferred from the developer paper cassette 18 toward the pressure developing device 19 in synchronization with the return movement of the document table glass 2 to the left.
When the exposed portion of the microcapsule paper 13 is pressed against the color developer paper 17, a color image is formed on the color developer paper 17.

Thereafter, the developing paper 17 is introduced into a sheet heating device 23 by a feed roller 16 or the like, and the image is fixed by the heat inside this device 23 and then discharged.

In the copying machine configured as described above, according to this embodiment, a plate 12 is attached between the condensing lens 9 and the exposure table 7.
Mirror unit support device 30 that supports the mirror unit in a position adjustable manner.
is provided.

As shown in FIGS. 2 and 3, this mirror unit support device 30 includes support members 32 and 32 arranged at intervals in the width direction of the mirror unit 31 and for supporting the bottom plate 70 of the unit 31. , is connected to this support member 32 to operate the support member 32, and also operates the copying machine main body 1.
The operating member 35 is rotatably supported via a shaft 33 with respect to the fixed frames F, F. The support column 32 has a support arm 36 that supports the mirror unit 31 at two points, and the operating member 35 has a rotating arm 37 that rotates the operating member 35. A roller support plate 39 is spirally connected to the upper end of the rotating arm 37 via a bolt 38, and a roller 40 is pivotally supported on the roller support plate 39. 42.

Further, the support arms 36 are connected by a flat connecting part 43, and the actuating members 35 are connected by a flat connecting part 45, and the connecting parts 43° and 45 are located approximately at the center in the width direction of the mirror unit 31. They are connected so that the inclination can be adjusted using the rotation center shaft 46 as a pivot point at a position corresponding to the position.

As shown, long holes 47° 47 are provided at both ends of the connecting portion 45, and screw holes are provided in the connecting portion 43 corresponding to the long holes 47, and the inclination of these connecting portions 43° 45 can be adjusted freely. It is coupled to via a screw 48. A long hole 50 is provided at the lower edge of the connecting portion 45 as shown in the figure.
A screw hole is provided in the connecting portion 43 corresponding to 0, and these are connected via a screw 51 so as to be adjustable in the horizontal direction.

Further, a long hole 53 is provided at the upper edge of the connecting portion 45, and a hole is provided in the connecting portion 43 corresponding to this long hole 53, and an adjustment jig 55 having a (-6 shaft 54) is provided here. When inserted, the vertical and inclination between the connecting parts 43 and 45 can be adjusted.

In this embodiment, in order to adjust the height of the mirror unit 31, the cam plate 41 is moved up and down, the rotating arm 37 is swung, and the support arm 36 is moved up and down. let At this time, the mirror unit 31 moves up and down while being guided by guide members 56 and 57 at both ends, as shown in FIG.

These holding members 56 and 57 are attached to the plate 12 for mounting the reflecting mirror 11. That is, the holding member 56 has the support plates 72 and 72 loosely fitted to the guide rod 71, and the unit 31
is tiltable, and the holding frame 7 of the holding member 57
5 is guided through the elongated hole 73 of the frame F, and the tip of the connecting rod 74 is pivotally supported on the holding frame 75, so that the unit 3
This enables a tilting operation in the width direction of 1. To adjust the inclination of the mirror unit 31, first loosen the screws 48.degree. 51, and as shown in FIG. 4, move the mirror unit 31 up and down in the left and right directions about the rotation center axis 46.

According to this embodiment, the connecting portion 43 of the support member 32 is connected to the connecting portion 45 of the operating member 35 so as to be rotatable about the rotation center axis 46, so that the mirror unit 31 can be tilted. When adjusting the inclination θ of the reflecting mirror 11, the center point 46 does not move up or down, so if the optical axis 59 of the condensing lens 9 is aligned here, the inclination can be adjusted as in the conventional case. There is no deviation in the vertical adjustment during the adjustment stage, and the adjustment can be performed extremely easily.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the connecting portion provided on the actuating member is engaged with the connecting portion that connects the supporting arms, and the connecting portion between both members is connected to the connecting portion that is approximately the width of the mirror unit. Since it is pivoted at a position corresponding to the direction center position, when adjusting the tilt of the mirror unit by rotating the support member relative to the operating member around this pivot point, the tilt adjustment is performed as in the conventional method. There is no deviation in the adjustment in the vertical direction in stages, and the adjustment can be performed extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the image forming apparatus according to the present invention, FIG. 2 is a perspective view showing the mirror unit support device, FIG. 3 is a side view showing the mirror unit support device, and FIG. 5 is a rear view of the same mirror unit support device, FIG. 5 is a rear view of the conventional mirror unit, and FIG. 6 is a perspective view of the conventional mirror unit support device. 1... Copying machine main body, 9... Condensing lens, 11...
・Reflection mirror 12... Mounting on plate, 30... Mirror unit support device, 31... Mirror unit, 32...
... Support member, 35... Operating member, 36... Support arm, 37... Rotating arm, 41... Cam plate, 46... Rotation center shaft. No. J No. 茅σ

Claims (1)

[Claims] In an image forming apparatus, a mirror unit disposed between a condensing lens and an exposure table and for converting an optical path is supported by a mirror unit support device in a position-adjustable manner. Consisting of a support member that supports two points spaced apart in the width direction of the unit, and an operating member that is connected to this support member, operates the support member, and is rotatably supported with respect to a fixed frame, The supporting member has a supporting arm that supports the two points of the mirror unit, the operating member has a rotating arm that rotates the supporting arm, and the operating member is provided with a connecting portion that connects the supporting arms. the connecting portions of both members are engaged, the connecting portions of both members are pivotally connected at a position corresponding to approximately the center position in the width direction of the mirror unit, and the support member is rotated relative to the actuating member around this pivot point. The image forming apparatus is characterized in that the inclination in the width direction of the mirror unit is adjusted by fixing both connecting parts, and the height of the mirror unit is adjusted by operating the rotating arm of the operating member. Device.