JPS62112149A - Exposing device for portable copying device - Google Patents

Abstract

PURPOSE:To expand an area to be copied by using a buffer member using fluid. CONSTITUTION:A bag-like case is constituted like an approximate rectangular parallelepiped and has projection parts extended on respective angular parts of the rectangular parallelepiped and respective projection parts constitute a part of the inner capacity of the bag-like case. The light-transmissive and flexible bag-like case is constituted of the buffer member 62 filled with fluid, the buffer member 62 has the projections 62' extended on its corner parts and the angular parts of a longitudinal original having almost the same area as that of the projecting surface of the buffer member 62 are allowed to contact with the projecting surface to attain copying. Since the corner parts of the pressing surface formed at the time of pressing are not circles but rectangles, copy enable area can be extended.

Description

[Detailed description of the invention] Technical field The present invention relates to an exposure device for a portable copying machine.

Conventional technology (1), represented by the Carlson method, Nanako copy i1r
Multi-gaging machines are widely used, but the equipment is large and
; ;F is heavy, noisy, expensive, etc.

It is not suitable for miniaturization, portability, and cost reduction, and even if the transfer target is designated paper, or general r7L, T, paper can be passed, it is in sheet form, and it is not suitable for folding. Missing: If there is a gap, there will be 4L errors mainly when transporting paper, and copies cannot be obtained for booklet-like items such as notebooks and notebooks. There were drawbacks such as increased thickness.

(IT), a small copying device for plate making and printing using a flash bulb has also been proposed, but in most cases the amount required to obtain copies is 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. Further, 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.

(jii) 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 very thick. However, it has 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 actual situation described in F, the present applicant first proposed a device that can be easily carried around and can be stored in a bag or pocket. We have proposed a copying machine that is small, very inexpensive compared to conventional copying machines, and has a high capacity for copying images.

FIG. 6 is a partially cutaway perspective view for explaining an example of a portable copying device previously proposed by the applicant.

In the figure, 1 is a portable copying device;

As shown in the national regulations, from the top of the device, there is an electrical control section 2 that incorporates electronic components on a J round board, an operation section 3 such as indicator lamps and switches, and a charging section that mainly consists of a capacitor that stores the emitted energy of a flash lamp. 4. A light emitting unit 5 consisting of a flash lamp 51, a reflector 52, etc.; a translucent platen plate 61 for bringing the original and the copy sheet into close contact with each other; Transparent platen portions 6 and the like made of transparent buffer members 62 and the like are arranged in a laminated manner.

FIG. 7 is a side sectional view showing an example of a copy sheet suitable for use in the portable copying device, and FIG. 8 is a partially exploded perspective view. In the figure, 7 is a copy 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, a glass plate several meters thick can be used 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, it is preferable to have a thin layer; if it becomes thick, not only will high energy be required, but the sharpness of the image will increase by 71%. Practically speaking, a thickness of 3 to 6 μm including the ink film manufacturing device is used. If the ink film wax layer is thin, a sufficient image cannot be obtained, and if it is too thick, the transmittance is poor, high energy is required, and "bleeding" is likely to occur, so 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 xenon lamp with an I sound output 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, "A" lamps such as halogen lamps and tungsten lamps have the advantage of simplifying the electrical system.

FIG. 9 is a diagram for explaining a copying method when information (image area 81) on a document 8 is copied using the copying apparatus 1 and the copying sheet 1-7. A copy sheet 7 is placed on top of a document 8 with the ink film side facing the document, and the copying apparatus 1 is placed on top of the copy sheet 7 so that the platen portion 6 is in close contact with the copy sheet 7. Copying device 1 is commercial 100
Connected to a V power source or a charging battery, the flash charging capacitor is charged to a preset potential level. Due to the weight of the device 1 and the pressure applied via the device 1, the platen, the copy sheet, and the original document are uniformly pressed against the surface of the copy sheet. 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, part of the light is also absorbed by the copying sheet 1-1, especially the ink film wax layer, and generates heat, which is used as a thermal bias. The image area 81 on the document generates heat due to light absorption.

This heat is transferred through the base of the ink film to the wax layer 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 copy sheet are peeled off, a wax image corresponding to the image area of the original is obtained on the intermediate 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 original. For example, it is low in the case of line images using pigments such as carbon or long wavelength absorption colors. Energy is sufficient, but high energy is required for dye-based colorants and long-wavelength reflective colors. Furthermore, if more energy than necessary is applied, the periphery of the image may melt, resulting in poor sharpness, or flow due to the surface tension of the wax may cause voids in the image.

Therefore, the charging energy for light emission is variable within the range of 0, 8-2, 5 Joul, e/-, for example. In addition, since the image of the intermediate/transfer body-1- obtained is heat-fusible, it can be used as a notebook, etc. using an iron or other heat source.
Thermal transfer can also be performed on notebooks, fabrics, etc. There is no problem with transferring to materials that can be impregnated with molten wax, such as paper and cloth, but when transferring to glass plates, plastic films, etc., heat and pressure with an iron, hot roller, etc. will cause the molten wax to transfer to the 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 apparatus 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.

In the above copying apparatus, the buffer member 62 has a thickness of about 10 to 50 μm.
It is made by thermoforming a plastic film about 300 ft thick into a bag shape, and the inside is filled with gas or liquid fluid. Therefore, even if the copying device is tilted relative to the surface to be exposed, the surface to be exposed is not a uniform plane, or there are protrusions such as dust, pressure can be applied evenly and the adhesion is very good. good. Additionally, the plastic film or fluid may be completely transparent, or it may have a white light-scattering layer or a colorant to match the spectral properties to the required properties. When copying, pressure is applied from above to bring the exposed surface and the buffer member 62 into close contact. At this time, the buffer member 62 has a rectangular shape as shown in FIG. 5 when viewed from above. If the square has a corner shape, the corners will not come into close contact with each other when pressure is applied. For example, if the document is rectangular, the shaded area A will be the non-adhesive part and the area B ( (dashed line area) becomes considerably narrower than the size of the buffer member 62.

The present invention has been made in view of the above-mentioned circumstances.
Particularly, in a copying apparatus using the above-mentioned buffer member, this is intended to expand the copyable area.

Configuration 1 In order to achieve the above object, the present invention has a buffer member formed by filling a fluid inside a bag-like container having light transmittance and flexibility, and when copying, the copying apparatus is connected to the exposed object. In an exposure device for a portable copying apparatus that performs copying with a surface via the buffer member, the bag-shaped container is configured into a substantially rectangular parallelepiped, and has an extended protrusion at each corner of the rectangular parallelepiped, The inside of the protrusion constitutes a part of the internal volume of the bag-like container. Hereinafter, embodiments of the present invention will be described based on 33i.

FIG. 1 is a configuration diagram of the main parts of an embodiment of a copying apparatus to which the present invention is applied, that is, a configuration of a portion corresponding to the light emitting section and platen section of the copying apparatus shown in FIG. During,
Reference numerals 11 and 12 denote side plates of the copying device; 1 light emitting section includes a xenon lamp plate 51 and a reflector plate 52 housed inside the side plate 12;
The platen portion includes a light-transmitting platen 61, a light-transmitting buffer member 62 having pressure elasticity, and the like. As mentioned above, during copying, pressure is applied from the L portion of the copying device 1 in order to bring the exposed surface into close contact with the buffer member 62, but at this time, the shape of the buffer member 62 is As shown in Figure 5, if the document is rectangular and each color has a corner, the colors will not stick together when pressure is applied, as in the case of double stacking, so if the document is rectangular, the shaded area A
becomes a non-contact portion, and the area B (dashed line area) that can be copied in close contact becomes considerably smaller than the size of the buffer member 62.

The present invention has been made to solve the above-mentioned problems. In the present invention, as shown in FIG. ', which makes it possible to copy the corners of a rectangular document with approximately the same area as the projection surface of the buffer member 62, as shown in FIG. It is only necessary to make the copying area slightly larger than the copying area that allows good copying, and the conventional buffer member 6 shown in FIG.
It can be made more compact than a copying machine using 2.

XXS: Figure 3 shows another example of a copying machine according to the present invention.
FIG. 4, which is a main part configuration diagram for explaining the M example, is a partial view when viewed from the IV-IV line direction of FIG.
Parts which function similarly to the embodiments shown in FIGS. 1 and 2 are provided with the same reference numerals as in FIGS. 1 and 2. In this embodiment, a recess 12 that engages with the protrusion 62' of the buffer member (Mi 2) is provided at the corner of the side plate 12.
' is provided, and the protrusion 62 of the buffer member 62
' is removably engaged with the recess 12' of the side plate 12,
Due to this.

A buffer member 62 is detachably held on the side of the exposure section f of the copying apparatus. During copying, the buffer member 62 is pressed by the copying device, but the external pressure at that time acts in the direction of engagement (horizontal direction) between the protrusion 62' and the recess 12'.
Copy 2′! The holding force for holding the buffer member 62 at the A position is sufficient to prevent the buffer member 62 from falling due to its own weight. Therefore, according to this embodiment, the buffer member 62 can be easily attached and detached, and when the buffer member 62 becomes dirty or deteriorated, it can be easily replaced.

In addition, by providing protrusions 62' for each color, compared to the conventional shape without protrusions shown in Fig. 5, when pressure is applied to bring the exposed surface into close contact with the exposed surface, as shown in Fig. 3, This improves adhesion at the corners of the paper, increasing the area that can be copied at one time on rectangular originals that must be completely adhered to the corners. In other words, it is possible to copy even the corners.

Effects: As is clear from the above description, according to the present invention, uniform blood pressure can be provided by using a simple HPR member using fluid. As a result, the corners of the pressurizing surface formed during pressurization are not round but rectangular, so that the copyable area becomes wider. Furthermore, when compression is applied to the a shock member, this external force acts in the direction of holding the buffer member, so the buffer member may be attached to the copying machine by a method that is easy to attach and detach.
When the buffer member is damaged or deteriorated, it can be attached to and removed from the flff-41.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts for explaining an embodiment of a copying apparatus according to the present invention, FIG. 2 is a diagram showing an example of a buffer member used in the copying apparatus according to the present invention, and FIG. , a configuration diagram showing another embodiment of the copying apparatus according to the present invention, FIG. 1 is a view seen from the rV-rV line direction in FIG. 3, and FIG. 5 is a diagram showing an example of a conventional buffer member. , FIG. 6 is a partially cutaway perspective view for explaining an example of a portable copying device previously proposed by the present applicant, and FIG. 7 is a side sectional view showing an example of a copying sheet.
FIG. 8 is a partially exploded perspective view of the copy sheet 1-, and FIG. 9 is a partially exploded perspective view of the copy sheet 1-. 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...' Heavy equipment control section, 3... Operation section, 4. Charging section, 5.. Light emitting section, 6.. Platen section, 7.. Copying seat 1-. 8.-manuscript, 11.12...
・Side plate, 5 Tofuranosh lamp, 52...Reflector, 6]
...Platen plate, 62...Buffer member, 62'...
Projection 6 Patent Applicant Ricoh Co., Ltd. Figure 5 Figure 6 Beam 7 Figure? l

Claims (2)

[Claims] (1) A buffer member is provided in which a fluid is filled inside a bag-like container having light transmittance and flexibility, and during copying, the buffer member is provided between the copying device and the surface to be exposed. In an exposure device for a portable copying machine that performs copying, the bag-like container is formed into a substantially rectangular parallelepiped, and has an extended protrusion at each corner of the rectangular parallelepiped, and the inside of the protrusion has an internal volume of the bag-like container. An exposure device of a portable copying machine, comprising a part of the exposure device. (2) The portable copying device according to claim (1), wherein the protrusion of the buffer member is detachably attached to a recess provided in an exposure section of the copying device. exposure equipment.