JPH0545738A - Color copying device - Google Patents

Abstract

PURPOSE:To adopt a simple constitution so that a compact unmagnification copying device and a variable power copying device with an excellent function, are easily handled, at low cost by selectively arranging first/second exposing systems. CONSTITUTION:The second exposing system executing a variable power copy is placed on an engine part, and composed of an original platen 30 on which an original 35 is placed, an exposing lamp 31, a lens 32, a mirror group 33, a movable mirror 34, and a driving system driving them. At this time, for using the first exposing system, that is, an unmagnification scan exposing system, and the engine part, in common, an optical arrangement is contrived so that an exposing position with respect to a photosensitive member is the same as that of the first exposing system or gets closer to it. Thus, a constitution that the engine part can be shared by the copying devices for unmagnification and variable copies is adopted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color copying apparatus for copying an original using a photosensitive transfer type material, and more particularly to a mechanical section thereof.

[0002]

2. Description of the Related Art A conventional electrophotographic method is widely used as a method for performing color copying. However, this method involves a series of image forming processes and requires a large-scale engine section.

On the other hand, as a copying machine using a photosensitive transfer type material capable of color copying by a simple process, for example, JP-A-62-147461 and JP-A-62-150.
No. 238 can be cited. When this system is used, the engine section is greatly simplified, and in the case of the analog system in particular, a very small and inexpensive color copying apparatus can be constructed.

[0004]

However, the above-mentioned prior art has the following problems.

Even in an analog type copying machine, if the single-function type copying only the same size of the original is used, the exposure system can be simple and downsized, and as a result, the entire apparatus can be made compact and low in price. In consideration of functionalization, it is important to incorporate the variable-magnification copy function. However, the exposure optical system for that purpose requires a considerable volume and space, and if the apparatus is configured with only variable magnification copying taken into consideration, the entire apparatus becomes large, and as a result, the features of this system such as small size and low cost are obtained. It will be damaged.

The present invention has been made in view of the above circumstances and solves the above problems. An object of the present invention is to provide an analog type color copying apparatus using a photosensitive transfer type material, which is a small-sized same-size copying apparatus. Device and a high-performance variable-magnification copying device
It is an object of the present invention to provide a color copying apparatus which can be easily constructed at low cost and easy to handle.

Still another object is to provide a color copying apparatus capable of easily copying a light-transmitting original such as a slide film in addition to the above-mentioned functions.

[0008]

A color copying apparatus of the present invention uses a photosensitive transfer type material and a first exposure system for projecting an equal-magnification image of a document onto the photosensitive member, and a variable-magnification image of the document. And a second exposure system for projecting light onto the photosensitive member can be selectively arranged.

Further, the color copying apparatus is characterized in that a third exposure system for projecting a light transmitting original image on a photosensitive member can also be arranged.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The color copying apparatus of the present invention will be described in detail below with reference to embodiments.

FIG. 1 is a front sectional view showing an embodiment of a color copying apparatus according to the present invention.
Is equipped with an exposure system.

The photosensitive member 8 and the transfer member 11 used in this embodiment are as shown in JP-A-61-278849.
Any photosensitive transfer type material such as that shown in No. 30537 can be similarly applied.

First, the operation of this machine will be described. A document 2 is placed on a document table 1 movably provided in the direction of arrow A in the figure, and a red lamp 3 as a light source, a green lamp 4, The light emitted from the blue lamp 5 irradiates the original 2, and the light reflected from the original 2 is imaged on the photosensitive member 8 moving on the exposure table 7 through the lens 6, so-called so-called etc. A double scan exposure system is formed.

A continuous sheet-shaped photosensitive member 8 sent out from a cartridge 20 containing an unexposed photosensitive member 8.
After being exposed on the exposure table 7 to form a latent image, it is heat-developed by the heat developing device 40 via the carrying roller 9. on the other hand,
The cut sheet-shaped transfer member 11 housed in the paper feed tray 10 is sent out by the paper feed device 12, and is superposed on the photosensitive member 8 in synchronization with the image area formed on the photosensitive member 8 so that the roller pressing system is used. Pressure transfer is performed by the pressure transfer device 60. The pressure unit of the pressure transfer device 60 is composed of three rollers, an upper roller 61, a middle roller 62, and a lower roller 63, and pressure transfer is performed between the upper roller 61 and the middle roller 62.

After this, the transfer member 11 is separated from the photosensitive member 8 by the separating roller 64 and is discharged to the paper discharge tray 14 through the conveying roller 13. The photosensitive member 8 is pinched to promote the conveyance and separation of the photosensitive member 8. It is wound around the winding shaft 21 via the roller 65.

Reference numeral 15 is a manual sheet feeding port, and 16 is a gas filter for removing gas generated in the machine.

Next, the case where a second exposure system for performing variable magnification copying is installed will be described.

FIG. 2 is a front sectional view showing an embodiment of a color copying apparatus having a variable-magnification copying function. Parts other than the exposure system (heat developing device 40, pressure transfer device 60, photosensitive member 8).
The transfer member 11, the transport system thereof, the control unit (not shown), and the so-called engine unit, which is the core of the image forming process, have the same configuration as in FIG.

In the figure, a second exposure system for performing variable magnification copying is mounted on the engine section, and a document table 30 for placing a document 35, an exposure lamp 31, a lens 32, a mirror group 33, and a movable member. The mirror 34 and a drive system (not shown) for driving them are main components. In the case of this example, the optical system is arranged so that the exposure position for the photosensitive member 8 is the same as or close to that in FIG. 1 in order to share the engine part.

As can be seen from the above description, the engine unit can be shared between the copying apparatus for equal-magnification copying and the copying apparatus for variable-magnification copying. For example, when manufacturing a normal-size copying apparatus, the first exposure system described above may be incorporated into a previously prepared engine section, and when manufacturing a variable-magnification copying apparatus, the second exposure system may be installed against the engine section. May be mounted and configured.

In the case of such a configuration, if the control system is adapted to be compatible with both of them in advance, it is possible to very easily remodel from the equal magnification machine to the variable magnification machine and vice versa. Consider, for example, the case of changing from a normal-size machine to a variable-power machine. In FIG. 1, first, the document table 1 and its peripheral members are excluded. Then, the second exposure system shown in FIG. 2 is set in the engine section, and the process is completed. Note that the red lamp 3, the green lamp 4, the blue lamp 5, the lens 6 and the like are unnecessary, but in the case of this example, the exposure points are slightly different between the same-size copying and the variable-magnification copying, so that they do not compete with each other, and thus these It is not necessary to remove the exposure element of.

Next, another embodiment of the present invention in which a third exposure system for projecting a light transmitting original image is installed will be described.

FIG. 3 is a front sectional view showing a state in which the third exposure system is mounted on the variable magnification copying apparatus shown in FIG. 2, and a light transmitting original image such as a slide film is projected on the photosensitive member 8. The mechanism is added.

In the figure, the projection unit 50 is detachably attached to an area sandwiched between the engine section and the second exposure system, and an exposure lamp 51, a slide film 52, and a lens 53 are main members. Is configured as. This third exposure system is designed to project onto the photosensitive member 8 at a predetermined fixed magnification, and unlike the second exposure system, the magnification is not variable. Further, a part of the optical path is shared with the second exposure system, and when copying the original using the third exposure system, it is necessary to retract the movable mirror 34 of the second exposure system from the optical path. However, by doing so, an efficient space utilization can be achieved and a compact exposure system can be realized.

Although the third exposure system is attached to the variable magnification copying apparatus in this example, it is of course possible to attach the third exposure system to the equal magnification copying apparatus shown in FIG. In this case, since the optical path is not shared in spite of the miniaturization, copying of the reflection original and light transmission can be performed more easily.

In the present embodiment, the color plate copying apparatus of the movable platen type has been described, but the present invention is not limited to this, and it is also applicable to a fixed platen type.

There are several types of photosensitive materials that can be used, and it goes without saying that the engine section can also take various forms correspondingly.

[0028]

As described above, according to the image forming apparatus of the present invention, in a color copying apparatus using a photosensitive transfer type material, a compact equal-magnification copying apparatus and a high-performance variable-magnification copying apparatus are provided. It has an effect that it can be easily configured at low cost and easy to handle.

Further, in addition to the above-mentioned functions, a light-transmitting original such as a slide film can be easily copied.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention equipped with a first exposure system.

FIG. 2 is a front sectional view showing an embodiment of the present invention equipped with a second exposure system.

FIG. 3 is a front sectional view showing another embodiment of the present invention in which a third exposure system is mounted.

[Explanation of symbols]

 1, 30 Original Plate 2, 35 Original 3 Red Lamp 4 Green Lamp 5 Blue Lamp 6, 32, 53 Lens 7 Exposure Stand 8 Photosensitive Member 9, 13 Conveying Roller 10 Paper Tray 11 Transfer Member 12 Paper Feed Device 14 Paper Ejection Tray 15 Manual Paper Feed Port 16 Gas Filter 20 Cartridge 21 Winding Shaft 31, 51 Exposure Lamp 33 Mirror Group 34 Movable Mirror 40 Thermal Development Device 50 Projection Unit 52 Slide Film 60 Pressure Transfer Device 61 Upper Roller 62 Middle Roller 63 Lower Roller 64 Separation Roller 65 pinch roller

Claims (2)

[Claims] 1. A photosensitive member having microcapsules in which at least a photosensitive substance and a coloring material are encapsulated is provided on a support, and the exposed photosensitive member and the transfer member are overlapped and pressed on the transfer member. In a color copying apparatus for forming an image on a sheet, a first exposure system for projecting an equal-magnification image of a document onto the photosensitive member and a second exposure system for projecting a scaled image of the document onto the photosensitive member. A color copying machine characterized by being selectively arranged. 2. A third exposure system for projecting a light-transmitting original image on a photosensitive member can be arranged.
The described color copying machine.