JPS59198440A - Copying device - Google Patents

Abstract

PURPOSE:To copy a slide film with a normal original copying machine by using a projection image receiver which is provided with a reflective mirror and a Fresnel lens and is attached freely on to a platen glass. CONSTITUTION:The slide set to a slide projecting machine 101 is projected onto a photosensitive drum 1 through a reflective mirror 107 and a Fresnel lens 108 and is copied with an electrophotographic copying machine 50. The reflective mirror 107 bends the optical path of the slide projecting machine 101, which projects the image horizontally, at right angles and directs the optical path toward the surface of a platen glass 4 of the electrophotographic copying machine 50. The Fresnel lens 108 may be obtained by superposing two Fresnel lenses, which function as cylindrical lenses and have grooves only in one direction, so that their grooves are orthogonal to each other, and this lens 108 functions to enlarge the projection image. A projection image receiver 140 including the reflective mirror 107 and the Fresnel lens 108 is folded freely and is attached and detached freely onto and from the glass 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus which obtains a copy image by exposing a photoreceptor to light reflected from a normal document, but which also has a function of copying an enlarged transmission projected image of a slide film.

Conventionally, a copying device capable of copying an enlarged transmission projection image of a slide film in addition to copying a normal original (hereinafter, such a copying device is referred to as a dual-purpose copying device) has been capable of copying an enlarged transmission projection image of a slide film. It was extremely difficult to align the optical position for

Further, this will be explained in detail with reference to FIGS. 1 and 2. In FIG. 1, 50 is a copying machine main body, 4 is a document table glass provided on the copy machine main body 50, 108 is a Fresnel lens provided on the document table glass 4, 107 is a reflection mirror for changing the optical path, 101 is a slide projector for enlarging and projecting a slide film. As shown in FIG. 2, optical systems such as the photosensitive tram 1 and the lens 8 are arranged inside the copying machine main body 50, but are not shown in FIG. In Figure 2, 105 is a slide film, and 106 is a projection lens of the slide projector 1.01.

In such a conventional dual-purpose copying apparatus, the device including the reflection mirror 107 and Fresnel lens 108 must be removed from the original table glass 4 and moved during normal reflective original copying. - Also, when making enlarged copies using a slide film, the reflection mirror 107 and frame lens 1
08'c is installed on the document platen glass 4, and as shown in FIG. In other words, it is necessary to perform optical alignment in which the center of the slide film 105, the optical axis of the Fresnel lens 108, and the optical axis of the lens 8 are made to coincide with each other in order to copy the transmission enlarged projection image of the slide film. Therefore, when copying a transmitted enlarged projection image in this way, the reflection mirror 1
07 and the Fresnel lens 108 on the document table glass 4, it is troublesome to adjust the optical position.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a dual-purpose copying device that can always stably copy an enlarged projected image from a slide film by simple operation. do.

Embodiments of the dual-purpose copying apparatus according to the present invention will be described in detail below with reference to the drawings.

FIG. 3 is a schematic partial cross-sectional view of an embodiment of the dual-purpose copying apparatus according to the present invention. In Figure 3, 4 is the document table glass, 6
1 is an illumination lamp, 5 is a first scanning mirror, and 7 is a second scanning mirror, which except for the document table glass move forward in the direction of the arrow shown in the figure to scan the document image. 8 is a lens, 9 is a third mirror,
10 is a color separation filter, 11 is a fourth mirror, and 12 is a dustproof sealed glass. ] is an electrophotographic photosensitive drum having an insulating layer on its surface, is rotatably supported on a shaft 2, and starts rotating in the direction of the arrow in response to a copy command. A static eliminator 14 is placed around this drum l. -Next phase electrical equipment 15° static eliminator 16. Full exposure lamp 17. Developing device 18° Transfer charger 25. The cleaning devices 31 are arranged in this order. The developing device 18 is composed of developing devices 181, 182, and 183 for each color of yellow, magenta, and cyan, and 13 is an exposure section where the original image is formed on the drum 1 by the optical system. be. 33 is a transfer drum having a gripper 24, 26 is a separating claw, 27 is a conveyor belt, 28.
29 is a fixing roller for fixing, and 30 is a tray for discharging paper. Still, 191, 191' is a cassette, 201, 2
01' is the transfer paper, 211°211' is the paper feed roller, 22
1 is a second register roller, and 23 is a second register roller.

Reference numeral 140 denotes a main body of the projected image receiving apparatus, which has a reflecting mirror 107 and a frame lens 108 as described later, and is provided on the document table glass 4 as shown in the figure when copying an enlarged projected image of a slide film. It is provided so that it can be attached and detached freely. A slide projector 101 has a lamp with a reflecting mirror 102, condenser lenses 103 and 104, and a projection lens 106, and is used to project images of slide fills 1 and 105 onto a document table glass 4''. As the Fresnel lens 108, a concentric lens as shown in FIG. 4, or a replacement of two cylindrical Fresnel lenses with their generating lines perpendicular to each other as shown in FIG. 5 is used.

In this example, the one shown in FIG. 5 was used.

6 is an overall perspective view of the projection image receiving apparatus 140 including the reflecting mirror 107 and Fresnel lens 108 in FIG. 3, and FIG. 7 is a partially abbreviated sectional view thereof. Further, FIGS. 8 and 9 show partially simplified sectional views of the projection image receiving apparatus in a closed state when the apparatus is not in use and in an open state when the apparatus is in use, respectively. In FIGS. 6 to 9, a projection image receiving apparatus main body 140 according to the present invention includes an upper main body 110 supporting a reflection mirror 107, an opening supporting a Fresnel lens 108 and guiding a projected image to a Fresnel surface.
The main body lower part 111 is a frame-shaped frame having an opening that guides the projected image transmitted through the Fresnel surface to the copying machine main body 50, and both have a hinge 112 on one side thereof.
Accordingly, stays 113 are connected to both sides of the hinge 112 sandwiching the mounting surface so as to be openable and closable. Two stays 113
A reflecting mirror 107 is attached to the upper part of the main body 1]0, and one end thereof is pivoted to each pin 1]5 fixed to two angle adjusting plates 116 of the same mechanism installed on both sides of the lower part of the main body 111. At the other end, a connecting rod 114 that connects the two stays connects the upper body 110 at both ends.
Stay guide plates 118 of the same mechanism are provided on both sides of the
It runs through the guide rail 119. The lock claw 120 is for locking the projection image receiving device 140 when it is closed as shown in FIG. 8, and this locking mechanism will be explained in detail using FIG. 10.

FIG. 10 is an explanatory diagram showing a locking mechanism of the projection image receiving apparatus. The lock claw 120 connects the elongated hole 127 to the step guide 12.
6 is slidably supported at the through-flange portion,
The spring 12 between the spring hook 123'' that hangs on the same member of the lock claw 120 and the spring hook 124 fixed to the upper part 110 of the main body
5 exerts a force in the right direction and engages with a retaining member 121 fixed to the lower part 111 of the main body, thereby locking the upper part of the main body 10 and the lower part 111 of the main body. Furthermore, when the slide knob 122 is slid against the force of the spring 125, the lock claw 120 and the engagement member 121 are unlocked. In addition, as shown in FIG. 7, a positioning pin 123 is provided in the lower part 111 of the main body.

Although we have not mentioned the mounting method of the reflecting mirror 107 and the Fresnel lens 108, for example, if the reflecting mirror 10
7 is attached to the second part 110 of the main body by adhesively fixing the cylindrical projections fixed to the four corners to the upper part 110 of the main body. Well, if the Fresnel lens 108 is placed over the opening on the lower part 111 of the main body, and the fixing plate 108', which has an opening of the same size as the Fresnel lens 108, is fixed to the lower part 111 of the main body using screws. It will be installed. Alternatively, the Fresnel lens 108 is inserted into the opening portion of a frame body having both openings and secured with screws, and the protrusion at the end of this frame body is fixed to the side surface of the lower body portion 111 with screws or the like. Alternatively, the Fresnel lens 108 and the reflective mirror 107 may be attached to the lower part 111 or the upper part 110 of the main body by other known methods.

Next, the operation of this embodiment of the dual-purpose copying apparatus according to the present invention will be explained with reference to FIG. 3 and FIGS. 6 to 10.

When copying using a normal original, the projection image receiving device 1
40 is not on the original table glass 4, but as shown in FIG. 8, the upper part 110 and the lower part 11 of the main body are
1 using the locking mechanism shown in FIG. 10, and then removed from the copying machine main body 50.

Now, when it is desired to copy a transmitted enlarged projected image using a slide film, the locking mechanism that suppresses the rotation of the projection image receiver 1400 with respect to the upper body 1100 and the lower body 111 is released as described above, and the upper body 110 is rotated around the hinge 112. The connecting rod 114 moves the sliding portion 119b of the guide rail 119 to the left in FIG. With this movement, the stay 113 begins to rotate around the pin 115, and when it reaches a certain angle, the rotation is stopped and the connecting rod 114
is fitted into the fixed portion 119a of the guide rail 119, and the state 1 in FIG. 9 is reached. At this time, the angle between the reflecting mirror 107 and the Fresnel lens 108 is maintained at approximately 45°. This angle is the pin 1 which is the rotation center of the stay 113.
The angle adjustment plate 116 that fixes the pin 115 can be adjusted and fixed to the lower part 111 of the main body within its long portion 117, so that even if there is a rosewood between the parts, the angle adjustment plate 116 that fixes the pin 115 can be adjusted at approximately 45 degrees. Can be set. In this way, as shown in FIGS. 6 and 9, the open projected image receiving position 14
0 as shown in FIG. 3 and FIG.
23 is fitted into the fitting hole 123' of the copying machine main body 5o and mounted on the document table glass 4. However, the projection image receiving device 140
It is more preferable to attach it to the main body 5o of the copying machine and then open it as shown above.

When the projection image receiver], 4.0 is positioned by the positioning pin 123 as described above, the Fresnel lens 108
The optical axis of the lens 8 substantially coincides with the optical axis of the lens 8 via the first and second scanning mirrors 5.7.

After that, a slide projector 101 installed on the main body illuminates the reflector lamp 102 and the condenser 103° 104.
An enlarged image of the slide film 105 is projected. The enlarged image of the slide film 105 is reflected downward by the mirror 107 and is focused on the upper surface of the document platen glass 4 via the Fresnel lens 108 . fresnel lens 108
This is a struggle to condense the divergent light beam transmitted through the projection lens 106 toward the lens 8 on the main body side, as shown in FIG.

In the case of the present invention, even if the projection image receiving device 140 is repeatedly attached and detached from the copying machine main body 50 and repeatedly opened and closed, the positions of the reflecting mirror 107 and the Fresnel lens 108 have good reproducibility, so the angle adjustment is performed once. If the optical axes are then aligned as shown in FIG. 2, there is no need for subsequent optical adjustment when copying a projected image, which is very convenient.

Next, in response to the copy command, the drum 1 starts rotating about the shaft 2 in the direction of the arrow. When the drum 1 rotates to the normal position, an enlarged projected image of the slide film 05 formed on the document platen glass 4 is illuminated by an illumination lamp 6 integrated with the first scanning mirror 5 to enhance the contrast. The transmitted light of the softened enlarged projected image is scanned by a first scanning mirror 5 and a second scanning mirror 7. The first scanning mirror 5 and the second scanning mirror 7 move at a speed ratio of 1:1/2, so that the optical path length between the surface of the document platen glass 4 and the 8-inch lens is always kept constant. A scan of the image is performed.

The transmitted light image above is the lens 8. After passing through the third mirror 9, the colors are separated by a color separation filter 10, and then the fourth mirror 11.
The image is formed on the drum 1 at the exposure section 13 through the dust-proof sealed glass 12. After the drum 1 is neutralized by a static eliminator 14 and then charged (for example, positively) by a primary charger 15, the image formed by the slide projector 101 and illuminated by the illumination lamp 6 in the exposure section 13 is exposed to slit exposure. be done. At the same time, static electricity of opposite polarity (for example, negative) to AC or - is removed by the static eliminator 16, and a high-contrast electrostatic latent image is formed on the drum 1 on the subsequent page by full exposure with the full exposure lamp 17. .

The electrostatic latent image on the photosensitive drum 1 is then developed into a toner image by a developing device 18. The developing device 18 is a yellow developing device 181. Magenta developer 182° Cyan developer 183
It consists of three developing units, and a designated developing unit operates in accordance with the color separation filter used for exposure to obtain a toner image of the required color.

The transfer paper 201 in the cassette 191 is fed into the machine by the paper feed roller 211, and the rough timing is taken by the first register roller 221, and then the precise timing is taken by the second register roller 23, so that the leading edge of the transfer paper 201 is fed into the machine by the paper feed roller 211. Transfer drum 33
gripper 24. The toner image on the photosensitive drum 1 is transferred onto the transfer paper while the transfer paper 201 is conveyed while being wrapped around the drum 33 as the transfer drum 33 rotates and passes between the transfer charger 25 and the photosensitive drum 1. be done. The transfer drum 33 rotates at a required number of rotations while gripping the leading edge of the transfer paper 201 with the gripper 24, and an image of a required number of colors is transferred by scanning the document image a required number of times.

The copying machine shown in the figure is equipped with two cassettes each loaded with transfer papers of different sizes and types, and these papers are selectively fed.

After the transfer is completed, the transfer paper is released from the gripper 24, guided by the separating claws 26 to the conveyor belt 27, and then guided to a pair of fixing rollers 28 and 29, where it is fixed by pressure and heat, and then discharged onto the tray 30. Ru.

After the transfer, the surface of the photosensitive drum 1 is cleaned by a cleaning device 31 composed of an elastic blade, and the process proceeds to the next cycle.

When a normal original is to be copied, the projection image receiving device 140 is changed from an open state as shown in FIG. 9 to a closed state as shown in FIG. This operation is the opposite of the operation when changing the projection image receiving device 140 from the closed state to the open state, as described above, and is therefore self-explanatory, so a description thereof will be omitted. The thus closed projected image receiving device 140 is removed from the copying machine main body 50, and a normal original (not shown) is placed on the original platen glass 4.

After the copy command, the photosensitive drum 1 rotates around the shaft 2, and at a certain point, the first mirror 5 and the second mirror 7 move together with the illumination lamp 6 in the direction of the arrow shown in the figure.
scans the original image illuminated by Thereafter, a cycle similar to the above-mentioned copying cycle of the transmission enlarged projection image is performed to obtain a color copy from a normal original.

It's a moat, I installed a positioning pin on the projection image receiver, but
This is not particularly necessary, and it goes without saying that any type of device may be used as long as it can be attached to and detached from the main body of the copying machine.

Furthermore, it goes without saying that a linear bearing sliding device using a ball bearing with a locking mechanism can be used instead of the angle adjusting plate 116 and the stay guide plate 118 of the projection image receiving device 140 shown in FIG.

In the above embodiment, a color copying machine is used as the copying machine main body of the dual-purpose copying machine, but it goes without saying that the present invention can be applied to a normal black-and-white copying machine.

As explained above, the effects of the present invention are as follows.

(1) When copying from slides, you can easily make cents, and there is a reflective mirror for each copy.

There is no need to adjust the optical axis between the condenser lens and the copier body.

(2) By folding the projection image receiver when not copying from a slide, it becomes compact with no dead space, making it easy to handle and reducing storage space, while also preventing dust etc. from adhering to the reflecting mirror. Preventing.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a conventional dual-purpose copying device, FIG. 2 is an explanatory diagram of an optical system of a conventional dual-purpose copying device, FIG. 3 is a schematic diagram of a dual-purpose copying device according to the present invention, and FIG. 5 is a schematic diagram of a Fresnel lens, FIG. 6 is a perspective view of a projection image receiving device of a dual-purpose copying apparatus according to the present invention, FIG. 7 is a sectional view of FIG. 6, and FIGS. 8, 9, and 10. The figure is a partial sectional view of Fig. 6. 1 is a photosensitive drum, 4 is an original table glass, 105 is a slide film, 101 is a slide projector, 107 is a reflecting mirror, 108 is a Fresnel lens, 113 is a stay, 123
Locating pin patent applicant Canon Co., Ltd. Figure 8 Figure 9 Figure 1o Figure 111

Claims (5)

[Claims] (1) In a copying machine capable of copying a projected image t of a slide film onto a copying machine body capable of copying a normal original image, a device for projecting the entire projected image of the slide film, and a device for projecting the entire projected image of the slide film, It has a reflecting mirror for guiding and condensing light to the machine body, a condensing lens, and a projected image receiving device which is an integrated structure, and the projected image receiving device is detachable from the copying machine body. A copying device that uses (2) A copying apparatus according to claim 1, wherein the projection image receiving device has means for positioning it with respect to the main body of the copying machine. (3) In the projection image receiving device according to claim 1, the reflecting mirror and the condensing lens are in a positional relationship so as to guide the projected image to the copying machine main body when copying a transparent original. A copying apparatus characterized by being in an open state and in a closed state except when copying a transparent original. (4) In the device described in claim 3, the projection image receiving device includes a first holding means for holding the reflecting mirror and the condenser lens in the open state, and a second holding means for holding the reflecting mirror and the condensing lens in the closed state. A copying apparatus characterized by having: (5) The projection image receiving device according to claim 4 is characterized in that the projection image receiving device has an adjusting means for adjusting the reflecting mirror and the condensing lens with respect to the optical axis in the open state. copying equipment.