JPS62109035A - Portable copying machine - Google Patents

Abstract

PURPOSE:To prevent the leakage of flash light during copying to the outside by freely movably providing a light shieldable frame body which nearly encloses a cushion member. CONSTITUTION:A platen part 6 consists of a light transmittable platen plate 61 and the cushion member 62 having elasticity and the 2nd frame body 63 for light shielding which encloses the 1st frame body by projecting from the cushion member 62 is freely vertically movably provided to the outside periphery of the 1st frame body. A notch 11 is provided to a side plate 11 in order to vertically move the frame body 63 and the frame body 63 is vertically movably held in the notch 11a part. The frame body 63 is projected downward from the cushion member 62 by the own weight of a copying device 1 in the stage of copying. The leakage of the flash light by lighting up of a lamp 51 to the outside is thereby prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable copying device, and more particularly to a flash light leakage prevention mechanism in a thermal transfer type portable copying device.

Electrophotocopying machines such as the Carlson method are widely used, but the devices are large, heavy, noisy, and expensive. It is not suitable for making it more portable, more portable, or lower in price. In addition, even if the material to be transferred is designated paper or general plain paper is possible, if it is sheet-like and has folds or missing parts, problems will occur mainly in paper transportation, and booklets such as notebooks and notebooks will It was not possible to obtain copies of the originals, and attempts were made to cut and paste them, but these had the disadvantages of being unsightly and becoming thicker.

(it), small-sized copying devices for plate making and printing using flash bulbs have also been proposed, but in most cases, the amount required to obtain copies is one or several copies, and the cost for one plate,
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.

(iii) Furthermore, in recent years, small digital copying machines that use a document 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. 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 above-mentioned circumstances, 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 portable copying machine that is small, very inexpensive compared to conventional copying machines, and has high quality copied images.

FIG. 5 is a partially cutaway 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;

As shown in the figure, from the top of the device, there is an electrical control section 2 with electronic components installed on the board, an operation section 3 including indicator lamps, switches, etc.
, a charging section 4 mainly consisting of a capacitor that stores the light emitted energy of a flash lamp, a light emitting section 5 consisting of a flash lamp 511, a reflecting plate 52, etc., a translucent platen plate 61 that brings the original and copy sheet into close contact, and a translucent buffer member 62 Translucent platen portions 6 and the like are arranged in a substantially laminated manner.

FIG. 6 is a side sectional view showing an example of a transfer sheet suitable for use in the portable copying apparatus, and FIG.

This is a partially exploded perspective view. In the figure, 7 is a transfer sheet, and the transfer sheet 7 includes a translucent plastic film 71 which is an intermediate transfer body, and a dye on a base 72 similar to the translucent plastic film 71. It consists of an ink film 74 that is closely attached to an ink film 74 provided with a wavelength-selective transmitting and heat-melting wax layer 73 in which a coloring agent such as a pigment is dispersed, 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 for the film thickness, as an extreme example, a glass plate with a thickness of several I can be used as the intermediate transfer body, but it may be difficult for 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, in the case of halogen lamps, tungsten lamps, etc., fl
! It also has the advantage of simplifying the mounting system.

FIG. 8 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. Stack the copy sheets 1-7 on top of each other with the ink film side facing the original, and place the copying device 1 on top of it with the platen 6 in close contact with the copy sheet 7! ! 1 is commercial 10
Connected to a 0V power supply or charging battery, the flash charging capacitor is charged to a preset potential level. The platen, the copy sheet, and the original are uniformly pressed against the surface of the copy sheet by the weight of the device 1 and the pressure applied through the device 1. When the flash lamp trigger switch is turned on in this state, the flash lamp emits light and 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 document 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 transfer member 71. This statue 1
It 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. However, in the case of dye-based colorants and long wavelength reflective colors, high energy is required6.

If more energy than necessary is applied, the periphery of the image will melt, resulting in poor sharpness, or the surface tension of the wax will cause it to flow, causing hollow spots in the image. therefore,
The charging energy for light emission is, for example, 0,8 to 2
, 5 Joule/aJ. or,
Since the resulting image on the intermediate transfer member is heat-fusible, it can also be thermally transferred to notebooks, notebooks, fabrics, 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 object and the object to be transferred, and it bleeds into one image. In such a case, flash exposure is still effective, and it is sufficient to overlap the intermediate transfer bodies so that the ink image faces the side of the transferred object, place the device 1 in the same manner as above, and emit light while applying pressure. , in this case, the heat generation due to light absorption of the wax layer itself is utilized, so the heating rate is, for example, 1.5 compared to the above case.
~2 times as much energy is required.

The present invention is a further improvement of the above-mentioned portable copying device,
Particularly, in the above-mentioned portable copying apparatus, this is intended to prevent flash light from leaking out during copying.

Structure In order to achieve the above object, the present invention includes at least a flash light emitter, a frame body containing the flash light emitter,
A portable copying device having a light-transmissive and pressure-elastic buffer member provided to protrude from the frame body, and which performs copying by pressing the buffer member against a surface to be exposed, which substantially includes the buffer member. The invention is characterized in that the frame has a light-shielding frame that is movable. An explanation will be given below based on one embodiment of the present invention.

FIG. 1 is a main part configuration diagram for explaining one embodiment of the present invention, that is, a light emitting section 5 and a platen section 6 shown in FIG.
In the figure, reference numeral 11.12 is a side plate of the copying apparatus 1, and inside the side plate 12, a light emitting unit 5 such as a xenon lamp 511 and a reflecting plate 52 is housed. The platen section 6 includes a light-transmissive platen plate 61 as described above.
and an elastic buffer member 62, and the side plate 1
On the outer periphery of the first frame formed by 1.degree. 12, a second frame 63 for light shielding that protrudes from the buffer member 62 and wraps around the first frame is provided so as to be movable up and down.

In order to move the frame body 63 up and down, in the illustrated embodiment, the side plate 11 has a cutoff lla, and the frame body 63
is held movably up and down in the notch lla,
In the embodiment shown in FIG. 1, during copying, the frame 63 protrudes downward from the buffer member 62 due to the weight of the copying device 11, thereby preventing flash light from lighting the lamp 51 from leaking to the outside. However, as shown in FIG. 2, a spring member 13 may be used to urge the frame 13 so as to always protrude from the buffer member 62.

In order to make a copy, the copying device 1 is placed over the surface to be exposed and pressure is applied from above, so that the frame 63 remains in contact with the surface to be exposed and is moved relative to the frame formed by the side plates 11 and 12. The buffer member 62 moves upward and blocks light leaking from the side surface of the buffer member 62 during exposure so as not to leak to the outside. In order to effectively utilize the light leaking from the side surface of the buffer member 62, it is necessary to
Instead of making the inner surface 63a light-absorbing, it is also possible to make it a mirror surface by aluminum vapor deposition or the like so that it becomes light-reflective.

3 and 4 are views showing a locking mechanism for preventing the cylindrical body 63 from being inadvertently pushed.
The figure shows a side view of the main part, and FIG. 4 shows a sectional view taken along the line IV-IV in FIG. When locked, the portion 14' prevents movement of the cylinder 63. That is, when the copying apparatus 1 is not in use, the frame body 63 always protrudes from the buffer member 62 due to the lock claw 14 and the buffer member 6
2 to protect the buffer member 62 and prevent it from getting dirty.

Effects As is clear from the above description, according to the present invention, by using the dead weight of the copying device or an elastic member such as a spring to cover the buffer member with a frame that tightly contacts the surface to be exposed, the flash light is prevented from going outside. Light leakage can be prevented. Furthermore, by locking the frame in a protruding state, it is possible to protect the buffer member and prevent it from becoming dirty when copying is not being performed.

[Brief explanation of drawings]

1 and 2 are main part configuration diagrams for explaining an embodiment of the present invention, FIGS. 3 and 4 are configuration diagrams for explaining an example of a locking mechanism, and FIG. 5 6 is a partially cutaway perspective view for explaining an example of a portable copying device previously proposed by the present applicant, FIG. 6 is a side sectional view showing an example of a transfer sheet, and FIG. 7 is a side sectional view of an example of a transfer sheet. Partially exploded perspective view, No. 8
The figure 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...Manuscript, 11.12
... Side plate, 13... Spring, 14... Lock mechanism, 63... Light-shielding cylinder. Figure 81Figure 2Figure 6

Claims (2)

[Claims] (1) At least a flash light emitting body, a frame containing the flash light emitting body, and a light transmitting and pressure elastic buffer member provided to protrude from the frame, and covering the buffer member. 1. A portable copying apparatus that performs copying by pressing against an exposure surface, characterized in that the frame includes a light-shielding frame that substantially encloses the buffer member and is movable on the frame. (2) The portable copying apparatus according to claim (1), further comprising a locking mechanism that prevents relative movement of the light-shielding frame.