JPH02219039A - Optical device of 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 image forming I! In particular, the present invention relates to an optical device including a mirror unit disposed between a condensing lens and an exposure table to convert an optical path.

[Prior Art] In general, an image forming apparatus includes a mirror unit U shown in FIG. A mirror unit support device S that supports the mirror unit in an adjustable manner is provided. The mirror unit U has a mirror 51 mounted obliquely on a frame 50, and this frame 50 is mounted on holders 52, 53 so as to be movable up and down or tiltable. This type of conventional mirror unit support device S includes a support member 6 that supports two points on the bottom surface of the frame 50 spaced apart in the width direction of the mirror unit 7F via a roller 61c.
1a, 61b, and this support member 61a.

61b and the supporting member 61a.

and an actuating member 62 that operates 61b, and both are connected by a shaft 63. When adjusting the position Wi of the mirror unit U supported at two points on the support member 61, first, the roller 61c of the support member 61b on the right side in the figure is used as a fulcrum, and the other support member 61a is moved to the shaft 6.
3, the inclination of the mirror unit U in the width direction is adjusted, and the actuating member 62 is operated to move the entire mirror unit U up and down to focus.

[Problem to be Solved by the Invention 1] However, in such a conventional image forming apparatus, the roller 61C tends to separate from the mirror unit support device 3, and an out-of-focus image tends to occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image forming apparatus that solves the problems of the above-mentioned conventional techniques and prevents the occurrence of out-of-focus images.

[Means for Solving the Problems 1] In order to achieve the above object, the present invention adjusts the angle of one of the two support members that support the mirror unit to reduce the vertical tilt of the mirror unit. Small ilS!
A rotatable spherical roller is provided at one end of each of the two supporting members, and the mirror unit is supported by the supporting member via the spherical roller.

[Effect 1] According to the present invention having the above configuration, out-of-focus images are less likely to occur.

[Embodiment J] Hereinafter, an embodiment of an image forming apparatus according to the present invention will be described 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 which covers the document table glass 2 in an openable and closable manner are disposed so as to be movable from side to side. Below the document table glass 2 is a halogen lamp 4 which extends in a direction perpendicular to the moving direction of the document table glass 2 and irradiates light onto the document on the document table plus 2. A light source 6 consisting of a reflecting mirror body 5 that reflects toward the glass 2 is provided. When the document table glass 2 is moved left and right while the light i6 is being emitted, the entire document is irradiated with light.

Further, an exposure table 7 is disposed in the interior of the copying machine main body 1, and between this exposure table 7 and the light Fi6, there is a filter 8 for adjusting the color tone of the copied image fM, and a light condensing table 7. The lens 9 for use is mounted and supported by a plate 10, and the optical path length and focus are determined between the lens 9 and the exposure table 7. l! A pair of reflecting mirrors 11 for alignment are supported by a plate 12 so that their positions can be adjusted. After being irradiated onto the original, the light reflected from the original passes through a filter 8, a lens 9, and each reflection mirror 11, and is guided to the exposure table 7.

Furthermore, a cassette 28 for storing microcapsule paper 13 is removably housed inside the copying machine main body 1, and a take-up 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
The material is taken out from the cassette 28 by the rotation of , and then wound onto the take-up roller 15 . 1111, a portion of the microcapsule paper 13 that has passed through the lower surface of the exposure table 7 is exposed, 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 jff19 is disposed between the take-up 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 transferred to the color developer paper 17.
Formed on 7. Color developer paper 17 is made by coating a color developer on a base material, and forming a heat-melting surface (3) on this color developer, and the base material is paper with a small heat capacity and There is a large PET (Polyethylene Tele 7-L) etc. Also, the developer paper cassette 18 has a developer paper 17.
A protrusion 18a for size determination is provided in the main body 1, and an fη classification device 20 is provided in the main body 1 for determining the size of the color developing paper 17 by classifying the size of the protrusion 18a by 4'll.

A plurality of feed rollers 21 and paper guides 25 are provided between the developer paper cassette 18 and the pressure developing device 19 to transport the developer paper 17 toward one pressure developing device VC station. A peeling roller 22 for peeling off the color developing paper 17 from the microcapsule paper 13 is provided on the paper feeding side. A sheet heating device 23 for fixing the image formed on the color developer paper 17 by heat is disposed on the paper feeding side of the peeling roller 22, and the color developer paper 17 discharged from the sheet heating device Wt23 is transferred to the tray 2.
It is accommodated in 4.

When making a color copy with this copier, operate the start button (not shown) and the document table plus 2 will be moved to the right edge, and the left edge of the document will be moved to the Hikari i! ! After the halogen lamp 4 is placed opposite the halogen lamp 4 of No. 6, the halogen lamp 4 is turned on, and in this state, the Irf plate 2 is returned to the left and the irradiation of the document is completed.

During this light irradiation, the microcapsule paper 13 is exposed to the exposure table 7.
2, it is moved to the winding side at the same speed as the document table glass 2. Then, a latent image of the original is formed on the microcapsule paper 13 by the reflected light from the original. Developing paper 1
7 is transferred from the developer paper cassette 113 toward the pressure developing device 19 in synchronization with the return movement of the original platen glass 2 to the left, and the exposed portion of the microcapsule paper 13 is transferred to the developer paper 1.
7, a color image is formed on the color developing 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 supports +ff of the mirror unit 31.

Additional support members 32.32 are arranged at intervals in the direction and support the bottom plate 70 of the unit 31, and this support member 3
2 to operate the support member 32, and an operating member 35 rotatably supported via a shaft 33 with respect to seven fixed frames F, F of the copying machine main body 1. The support member 32 has a support arm 36 that supports the mirror unit 31 at two points via spherical rollers 36a, and the actuation member 35 has a rotation arm 37 that rotates the actuation member 35. The spherical roller 36a is rotatably attached to the tip of each support arm 36, and the spherical roller 36a is
It is inserted into a bearing hole 3ia provided on the lower surface of the mirror unit 31 so as to be movable in the water direction. The rotating arm 37
A roller support plate 39 is screwed onto the upper end via a bolt 38, and a roller 40 is pivotally supported on this roller support plate 39.
2- is configured to be transferred to another location.

Further, the support arm 36 is connected upwardly to a flat connecting part 43, and the actuating members 35 are connected by a flat connecting part 45. They are connected so that the inclination can be adjusted using the rotation center thin 46 as a pivot point at a position corresponding to the position.

As shown in the figure, both ends of the connecting portion 45 are provided with improvements 47° 47, and the connecting portion 43 corresponding to the improvements 47 is provided with a punch hole, and these connecting portions 43° 45 are arranged so that the inclination is r. *g
They are freely connected via screws 48. The lower edge of the connecting portion 45 is provided with an improvement 50 as shown in the figure, and the connecting portion 43 corresponding to this improvement 50 is provided with a screw hole, and these holes extend in the horizontal direction y! 4 are connected via screws 51 in a freely adjustable manner.

Further, an improvement 53 is provided on the upper edge of the connecting portion 45, and a hole No. 43a is provided in the connecting portion 43 corresponding to the improvement 53, and a hole No. 43a is provided in the connecting portion 43, which has an eccentric shaft 54. 5
5 is inserted, and the top and bottom of the connecting part 43.45 open and the tilted island w
It is now possible to do 4 adjustments.

In this embodiment, the height of the mirror unit 31 is
8%, as is clear from the vJ3 diagram, cam plate 4
1 is moved down by 1), the rotating arm 37 is swung, and the support arm 36 is moved up and down. At this time, since the spherical roller 36a is inserted into the bearing hole 31a, the support arm 36 and the mirror unit 31 will not separate due to vibration etc. during the copying operation.
Even if the inclination is adjusted, a good relationship between the spherical flow surface 36m and the bearing hole 31a can be maintained, and the occurrence of out-of-focus images is reduced. Also, at this time, the mirror unit 31 has guide members 56 and 57 at both ends, as shown in Figure tpJ4.
It moves up and down while being guided by. These holding members 56.5
7, a reflecting mirror 11 is attached to a plate 12.

That is, the holding member 56 is attached to the support plate 72 on the ID keyaki 71.
72 is fitted loosely so that the unit 31 can be tilted, and the holding member 57 has a holding frame 75 that is fitted into the elongated hole 7 of the frame F.
The tip of a connecting rod 74 is pivotally supported by a holding frame 75 to enable tilting movement of the unit 31 in the width direction. To adjust the inclination of the mirror unit 31 by i1m, first loosen the screws 48 and 51, and as shown in FIG. 4, move the mirror unit 31 up and down left and right about the rotation center axis 46 as a pivot point.

[Effect 1 of the Invention As is clear from the above description, the present invention provides excellent effects such as less occurrence of out-of-focus images.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of an image forming apparatus equipped with an optical device of the present invention, FIG. 2 is a perspective view showing the mirror unit support device, and FIG. 3 is a side view showing the mirror unit support device. , FIG. 4 is a rear view of the same mirror unit support device, and FIG. 5 is a rear view of the conventional mirror unit.
FIG. 6 is a perspective view showing a 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...
... Supporting member, 35... Operating member, 36... Supporting arm, 36a... Spherical roller, 37... Rotating arm.

Claims (1)

[Claims] 1. A means for finely adjusting the vertical inclination of the mirror unit by adjusting the angle of one of the two support members that support the mirror unit, and a rotatable spherical member at one end of the two support members. 1. An optical device for an image forming apparatus, characterized in that rollers are provided respectively, and the mirror unit is supported by a support member via the spherical rollers.