JPS62105570A - Portable copying device - Google Patents

Abstract

PURPOSE:To facilitate the copying job and to make small in size and light in weight of the titled device by dividing the titled device into an exposure unit part and an electric control unit part. CONSTITUTION:The exposure unit part I and the electric control unit part II are connected by an electric wire III. The unit I is provided with a light emitting section 5 and a platen part 6 and the unit part II is provided with an electric control section 2 and a charging part 4 or the like and both the units I, II are constituted independently.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a portable copying device, and more particularly, to a portable copying device that performs copying by placing only the exposure unit of the copying device on the exposed surface of a document or the like. The present invention relates to a copying machine.

Prior art (i) Electrophotographic copying machines, such as the Carlson method, are widely used, but they are large, heavy, noisy, and expensive, and they are not suitable for miniaturization or portability. In addition, if the transfer material is designated paper or general plain paper is possible, it is sheet-shaped and has folds or missing parts, making it difficult to transport the paper. Due to this problem, it was not possible to obtain copies of booklet-like items such as notebooks and notebooks, and attempts were made to solve the problem by cutting and pasting, but these had drawbacks such as being unsightly and becoming thicker.

(ii) In addition, a small copying device for plate making and printing using a flash bulb has been proposed, but the amount required to obtain copies is often one or several, and the cost of clothing and
Including the cost of bulb lamps, etc., the unit cost of copying becomes very expensive and is not practical. Furthermore, many of these plate-making and printing machines have the disadvantage that, due to their structure, the original must be in the form of a sheet or a single-sided original.

(ni) Furthermore, in recent years, small digital copying machines that use a document reading reader and a recording printer have been proposed, but in order to maintain a high level of image quality, the pixels must be made extremely fine. Instead, they have become expensive.

Copying machines have been widely used as office machines, but they are all installed on the floor, on a desk, or on a dedicated stand.

When I wanted to make a copy, I had to go to the place where the copy machine was located.

In view of the above-mentioned circumstances, the applicant first filed the following.

It is easy to carry around and can be stored in a bag or pocket. We have proposed a portable copying machine that is small, very inexpensive compared to conventional copying machines, and has high quality copied images.

FIG. 4 is a partially broken perspective view for explaining an example of a portable copying device previously proposed by the present applicant. In the figure, 1 is a portable copying device; From the top of the device, there is an electrical control section 2 with electronic components built on the board, an operating section 3 such as indicator lamps and switches, a charging section 4 mainly consisting of a capacitor that stores the flash lamp's emitted energy, and a flash lamp. 51, a light emitting section 5 consisting of a reflecting plate 52, etc., a translucent platen plate 61 for bringing the original and the copy sheet into close contact, a translucent platen section 6 consisting of a translucent buffer member 62, etc., are arranged in a substantially laminated manner. There is.

FIG. 5 is a side sectional view showing an example of a transfer sheet suitable for use in the portable copying device, and FIG. 6 is a partially exploded perspective view. In the figure, 7 is a transfer sheet; is a wavelength-selective transparent and heat-melting material in which coloring agents such as dyes and pigments are dispersed on a transparent plastic film 71 which is an intermediate transfer member, and a base 72 similar to the transparent plastic film 71. It consists of an ink film 74 provided with a wax layer 73 in close contact with it, and a frame 75 is used as necessary.

Examples of the plastic film include polyethylene, polyethylene terephthalate, polypropylene, polyvinyl chloride, polyvinylidene chloride, nylon, etc., and examples of the wax include beeswax.

Candelilla wax, carnauba wax, montan wax, etc., as well as paraffins, low-molecular synthetic resins, etc. can be used. In addition, as an extreme example, it is possible to use a glass plate of several thickness as the intermediate transfer body, but the thickness of the film may vary depending on practicality (operability).

10 to 200 μm and even 40 to 60 μm in terms of cost, etc.)
A plastic film of about μm size is used. Since the ink film base is used as a heat transfer layer during copying, a thin layer is preferable; if it becomes thick, not only high energy is required, but also the sharpness of the image deteriorates. Practically speaking, a thickness of 3 to 6 μm is used including the production of the ink film. If the ink film wax layer is thin, it will not be possible to obtain a sufficient image, and if it is too thick, the transmittance will be poor, high energy will be required, and "bleeding" will occur easily.
2 to 6 μm is suitable. As a light source, a halogen lamp, a tungsten lamp, etc. can also be used. However, since the shorter the heating time of the wax layer, the sharpness of the image is maintained, flash exposure using a high-output xenon lamp for a short time (e.g., light emission time of 2 to 3 m5 ec or less) is desirable. If the heating time is too long, the heat will be transmitted to parts of the document that do not correspond to the printed lines, resulting in poor sharpness. However, halogen lamps, tungsten lamps, etc. have the advantage of simplifying the electrical system.

FIG. 7 is a diagram for explaining a copying method when information (image area 81) on a document 8 is copied using the copying device 1 and the transfer sheet 7. Place the copy sheet 7 on top of the paper with the ink film side facing the original, and place the copy bag on top of it! i! 1 is placed so that the platen portion 6 is in close contact with the copy sheet 7. Copying device 1 is commercial 100
■Connected to a power source or charging battery, the flash charging capacitor is charged to a preset potential level. The platen, the copy sheet, and the X original are uniformly pressed against the surface of the copy sheet by the weight of the device 1 and the pressure applied via the device 1. If the flash lamp trigger switch is turned on in this state, the flash lamp will emit light.
The original is exposed to light through the platen and the copy sheet. At this time, some of the light is also absorbed by the copy sheet, especially the ink film wax layer, and generates heat, which is used as a thermal bias. The image area 81 on the JJK manuscript generates heat due to light absorption, and this heat is transmitted to the wax layer through the base of the ink film and melts the wax. The melted wax is fused to the intermediate transfer member 71, and when the device 1 is removed and both films 71 and 72 of the transfer sheet are peeled off, a wax image corresponding to the image area of the original is obtained on the intermediate width transfer member 71. This image is a normal image when viewed from the intermediate transfer body side, and this film may be used as a copy image as it is, or may be pasted on a notebook or the like as necessary. The energy of light emission varies depending on the spectral characteristics of the platen, copy sheet, etc., and the light emission characteristics of the lamp, but it also varies depending on the type of original1
For example, low energy is required for line images and long-wavelength absorption colors that use pigments such as carbon, but high energy is required for dye-based colorants and long-wavelength reflection colors. Furthermore, if more energy than necessary is applied, the periphery of the image may melt, resulting in poor sharpness, or the wax may flow due to surface tension, causing hollow spots in the image. Therefore, the charging energy for light emission is, for example, 0
, 8 to 2, and 5 Jouls/ai. Furthermore, since the image on the intermediate transfer member obtained is heat-fusible, it can also be thermally transferred to notebooks, notebooks, cloth, etc. using an iron or other heat source. There is no problem with transferring to paper, cloth, or materials that can be impregnated with molten wax, but when transferring to glass plates, plastic films, etc., if you apply heat and pressure with an iron, heated roller, etc., the molten wax will be transferred as an intermediate transfer. It leaks between the body and the transferred body and bleeds into the image. In such a case, flash exposure is still effective, and it is sufficient to stack the intermediate transfer bodies so that the ink image faces the side of the transferred body, place the device 1 in the same manner as above, and emit light while applying pressure. However, in this case, since the heat generated by light absorption of the wax layer itself is utilized, energy 1.5 to 2 times higher than in the above case is required, for example.

Purpose The present invention is a further improvement of the above-mentioned portable copying device,
In particular, the above-mentioned portable copying device is divided into an exposure unit section and the other electrical control unit section, and only the exposure unit section is placed on the document to perform copying, thereby facilitating copying work. This was done for the purpose of achieving this.

Structure In order to achieve the above object, the present invention divides a copying apparatus into an exposure unit consisting of a light emitting section and a platen section, and an electrical control unit that controls the other exposure unit, and connects these units via electric wires. The invention is characterized in that the exposure unit is connected to form an independent unit configuration, and only the exposure unit is placed on the surface to be exposed to perform copying. Hereinafter, the present invention will be explained based on examples.

FIG. 1 is an overall perspective view for explaining one embodiment of the present invention. In the figure, ■ indicates an exposure unit section, ■ indicates the other electrical control unit section, and ■ indicates a connection between these two units. The 1m light unit part (2) has a built-in light emitting part 5 and a platen part 6 shown in FIG. Both units I and (2) are constructed independently.

Note that the electric wire ■ is the power supply line for the light emitting unit, but it goes without saying that if the light emitting unit lamp is a flash lamp, a separate trigger line is required6. If a heater or the like is provided depending on the temperature, these lines are also required.

FIG. 2 is a diagram showing the internal structure of the exposure unit section I shown in FIG. 1, and FIG. 2(a) is a side view.

(b) is a front view, in which the same reference numerals as in FIG. 4 are given to parts that have the same function as in FIG. 4. Note that part 1 of the exposure unit 1 shown in the figure is the exposure unit frame 11. Lamp 519 Reflector 52. Platen plate 61
．． Although the buffer member 62 and the like are shown, switches, sensors, heaters, etc. added as necessary are not shown.

The platen plate 61 and the buffer member 62 are light-transmissive, and in particular, the buffer member 62 is an air bag made of a plastic film bag filled with gas, a plastic sponge, or the like.

FIG. 3 is a diagram showing an example of copying using the above-mentioned copying apparatus. In the figure, A is the area that requires exposure, and B is the area exposed at one time by the exposure unit (2). Therefore, in the copying apparatus according to the present invention, the area B that can expose the original, copy sheet, etc. at one time is determined by the size of the exposure unit or the contact area of the buffer member 62 with the surface to be exposed. However, according to the present invention, for example, by repeating the exposure several times (four times in the illustrated example), it is possible to arbitrarily expand the exposed area as shown in the figure.

As is clear from the above description, according to the present invention, copying work can be performed on a desk. In addition, the only moving part is the exposure unit, making it smaller and lighter, making copying operations much easier.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram for explaining one embodiment of the present invention, FIG. 2 is an internal configuration diagram of the exposure unit section (2) with respect to FIG. 1, and FIG. 3 is a copying apparatus according to the present invention. FIG. 4 is a partially cutaway perspective view for explaining an example of a portable copying device previously proposed by the applicant, and FIG. 5 is a transfer sheet. FIG. 6 is a partially exploded perspective view of a copy sheet, and FIG. 7 is a side sectional view showing an example.
1 is a diagram for explaining how to use a copying apparatus to which the present invention is applied. DESCRIPTION OF SYMBOLS 1... Copying device, 2... Electrical control section, 3... Operating section, 4... Charging section, 5... Light emitting section, 6... Platen section, 7... Transfer sheet, 8... Original, ■... Exposure unit section, ■... Electrical control unit section, ■...
Electrical wire. Patent Applicant: Ricoh Houki Co., Ltd.! Figure 2 Figure 4

Claims (1)

[Claims] The copying apparatus is divided into an exposure unit consisting of a light emitting section and a platen section, and an electrical control unit that controls the other exposure units, and these units are connected via electric wires to form an independent unit configuration, and only the exposure unit is used. 1. A portable copying apparatus characterized in that a copying apparatus is configured to perform copying by placing an image on a surface to be exposed.