JPS601611B2 - copying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus that can selectively copy reflective originals such as documents and transparent originals such as microfilm originals.

Copying devices that copy reflective originals use the reflected light from the original written on the document table, but when copying is performed using transmitted light, such as with microfilm originals. You must use a copying machine specifically designed for microfilm.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a copying apparatus which copies reflective originals, with the added function of copying microfilm originals.

The present invention removably attaches a recording body capable of recording images and erasing them to the manuscript layer position of a copying device that copies reflective manuscripts, and inserts a microfilm onto the recording body placed in the manuscript layer. Enlarge and project the image and record it on a recording medium, project the image of the original or recording medium placed at the document calendar position onto a photoreceptor and copy it, and then erase the image recorded on the recording medium. It is intended to be erased by means.

For example, an electrochromic substance is used as a recording medium capable of recording and erasing images.

An electrochromic substance is a substance that develops a color when energized and is reversibly discolored by energizing or heating with a polarity opposite to that of the energizing, and exhibits a phenomenon (electrochromy phenomenon) that depends on electrical conductivity. collectively.

Although the mechanism that causes the electrochromy phenomenon is not necessarily single, in many cases it is considered to be a so-called oxidation ring reaction between an electrolyte and a color-forming substance.

In this case, the electrolyte and the coloring substance are not necessarily distinguished from each other in terms of materials. The same substance can be a color-forming substance and an electrolyte at the same time. Another view is that the change in light absorption characteristics is due to the injection of injected electrons into the color center, as in the case of photochromy, and in reality, the electrochromy phenomenon is the result of a combination of these factors. It is understood that this is occurring. Since the electrochromy phenomenon electrically changes the inherent color of a material, the combinations of colors are diverse.

Also, whether a material can transmit, reflect, or scatter light is not determined by the properties of the material itself, but rather by the method of forming the electrochromic layer. It has the property of being able to form either type. These configurations and the above-mentioned diversity, as well as the memorability of coloring that lasts until it is erased after coloring occurs, and the fact that there are also materials whose coloring changes in response to the applied voltage value, allow for a wide variety of applications. Since it is possible, research has been actively conducted in recent years.

There is a wide range of materials used for electrochromic substances, spanning organic and inorganic substances.

FIG. 1 shows one embodiment of a recording medium to which the present invention is applied, and in the figure, reference numerals 1 and 1' denote supports, which may be omitted depending on the case. A transparent plate or sheet made of glass, polyester, etc. is used for the supports 1, 1'. 2 and 2' are electrodes and are arranged at appropriate intervals.

The electrodes 2, 2' are made of a transparent conductive material such as Sn02, ln203, Au, etc., and these materials are laminated on the support by a vapor deposition method or the like. 3 is a coloring layer containing an electrochromic substance, which is formed by vapor deposition using a transparent material such as W03, Moo3, Ti02, etc.

Reference numeral 4 denotes an electrolyte layer necessary for restoring the coloring layer 3 to its original color after it develops or changes color.

As this electrolyte material, CaF2, Zr02, Ta205
, Ti02, 8-mountain 203, etc., there are a large number of them. This electrolyte material is formed into a light-transmitting layer by a vapor deposition method. 5 is an optical semiconductor layer made of CdS and Z as optical semiconductor materials.
Using n○, Se, and ZnS, a binder and a sensitizer are added to this material to form an opaque layer.

This recording medium is a thin plate having a thickness of approximately 0.075 to 3 mm as a whole. 7 is between the electrodes 2 and 2' IV to about 10
It is a power supply that applies a voltage of 0V, and the gutter type of lightning pressure can be switched between forward and reverse using a two-way switch S.

When this switch S is operated and contacts a and c are connected to the electric wire 7 so that the electrode 2' becomes negative polarity, electricity is supplied so that the coloring layer 3 of the memory member develops color, and this switch S is connected to contacts b and c.
When switching is made so that d and the power source 7 are connected, the coloring layer 3 returns to its original color. In Figure 1, it is now about 20 meters from the support 1 side.
When the optical semiconductor layer 5 is irradiated with the light pattern A having a brightness of 0.01 ux, the resistance of the portion of the optical semiconductor layer 5 that is irradiated with the light decreases.

When the switch S is switched so that the contacts a and c are connected to the power supply 7 at the same time as the light irradiation, electricity is applied between the two electrodes 2 and 2', and the color forming layer 3 is formed into a light pattern with inkstone sand for 1 second to about 10 seconds. The color develops in response to the This colored state is maintained even if the power supply cuts off the light irradiation, and the light pattern is recorded. After the power is turned off after the color is completely developed, the color pattern can be read from the support 1' by irradiating the entire surface of the image storage medium with light from the support 1'.

Next, in order to erase the recorded colored pattern, the entire surface of the photosemiconductor layer 5 is irradiated with light uniformly from the support 1 side, and at the same time the switch S is switched so that the rear points b and d are connected to the power source 7. 3 returns to the original state.

Recording and erasing of this optical pattern can be performed repeatedly. FIG. 2 shows another embodiment of the recording medium, in which a conductive light shielding layer 6 is laminated between the optical semiconductor layer 5 and the electrolyte layer 4 of the recording medium shown in FIG.

For this light shielding layer 6, a light reflective material is selected. Note that the first
This light shielding layer 6 may be laminated between the optical semiconductor layer 5 and the coloring layer 3 of the recording medium shown in the figure. It is also possible to use a mixture of an optical semiconductor and an electrolyte in a single layer. FIG. 3 shows still another embodiment of the recording medium, in which the support 1, the electrode 2,
The optical semiconductor layer 5 and the coloring layer 3 are configured to be translucent (transparent),
The electrolyte layer or electrode 2' is made of a light reflective material. The method for recording the optical pattern is the same as described above, but in order to read the recorded optical pattern, light is irradiated onto the entire surface from the support 1 side and read from the support 1 side. In this embodiment, a light shielding layer similar to that described above may be provided as a fin layer between the coloring layer 5 and the electrode 2'. Further, in each embodiment, the arrangement order of each layer can be changed depending on the purpose of use, or layers providing other functions can be added. FIG. 4 shows a copying machine of the present invention equipped with a mechanism for observing images on microfilm, and the entire copying machine is composed of a microfilm projection section 10 and a copying section 11.

The microfilm projection section 10 is detachably arranged on the copying section 11, and includes an upper machine box 12, an illumination section 13 having a microfilm positioning mechanism and a mechanism for illuminating the microfilm, a projection lens 14, and a first fixed mirror. 15,
Movable mirror 16, second fixed mirror 17 and screen 1
It has 8. The illumination section 13 is constructed in the same manner as a known film reader (which may have a search mechanism), and includes an illumination optical system, a carrier for holding the microfilm at the illumination position, and the like. The image on the microfilm is enlarged and projected onto a screen 18 via a projection lens 14, a first fixed mirror 15, and a movable mirror 16. screen 18
At this point, the images on the microfilm are observed and the images to be copied are determined. The movable mirror 16 rotates around a support shaft 19, and when the mirror 16 is rotated to the chain line position 16', the entire image area to be copied on the microfilm is recorded via the first fixed mirror 15 and the second fixed mirror 17. Both bodies are enlarged and projected at the same time. The microfilm placed in the illumination unit 13 is movable in order to select the frame to be copied, and when the frame to be copied is determined and copied, it is placed stationary in a fixed position so as not to move. It will be destroyed.

The recording medium 20 shown in FIG. 1 or 2 is used, and the lower machine box 21 of the copying section 11 is placed so that the support 1 faces upward
It is removably placed in the original document placement position. Although this recording medium 20 is not shown, when recording and erasing images on it, a voltage of appropriate polarity is applied between a pair of transparent electrodes. Although not shown, the recording body 201 is placed on the document loading surface of a manuscript table having a transparent glass plate, and this document loading table is reciprocated from side to side along the upper surface of the lower machine box 21 at a constant speed. Configured to move. As the mechanism for moving the manuscript calendar table, it is possible to apply the manuscript table moving mechanism of a copying machine using a known manuscript movement method.
Since this method is well known in Japanese Patent Publication No. 2003-120000, its explanation will be omitted. When copying a desired image on the microfilm, the movable mirror 16 is first moved to the position shown by the broken line, and the recording medium is placed at the original document position shown by the solid line in FIG. Next, with the microfilm and the recording medium kept stationary, the entire surface of the image to be copied on the microfilm is simultaneously enlarged and projected onto the recording medium 20, and a coloring voltage is applied between the pair of electrodes of the recording medium 20. As a result, an enlarged image of the microfilm is recorded on the recording medium. When the recording on the recording medium is completed, the document table mounting table moving mechanism is activated to move the recording medium.
The recording body 20 is moved to the left at a constant speed from the third illustrated position integrally with the document loading table. The recording body 20 is the lower machine box 2
When passing over the slit 22 provided on the top surface of the photosensitive drum 27, it is irradiated with a light beam from the lamp 23, and the reflected light image is projected onto the photosensitive drum 27, which moves at a constant speed through the exposure section 26 using the reflecting mirror 24 and the mirror lens 25. projected on. A photosensitive drum is a cylindrical photoconductor layer coated with a transparent insulating layer. The photosensitive drum 27 is rotating in the direction of the arrow, the recording medium 20 moves in synchronization with the photosensitive drum 27, and the image recorded on the recording medium is projected onto the photosensitive drum at approximately the same magnification. The photosensitive drum 27 is first charged with a primary charger 28 that is supplied with a high voltage current from a high voltage power source, and then the image on the recording medium is slit exposed in an exposure section 26, and at the same time, an AC high voltage current is supplied from the high voltage power source. AC static elimination action is performed by the static eliminator 29 to which the static eliminator 29 is supplied. A static lightning latent image is then formed on the surface of the photosensitive drum through the process of exposing the entire surface to light using the lamp 30. However, the above process can be modified such that DC primary charging→imagewise exposure and simultaneous reverse polarity secondary charging→full surface exposure, or secondary charging is performed immediately after imagewise exposure. The electrostatic latent image described above is liquid-developed and developed using a developer 32 in a developer 31, and then subjected to a corona discharge by a Kawashima piezoelectric current in a post-charger 33, thereby eliminating excess development without disturbing the image. The liquid is squeezed out.

The transfer paper P fed from the paper feed section 34 by a roller 35 or the like is brought into close contact with the photoreceptor drum 27, a river corona charge is applied by the charger 36 to transfer the image, and the paper P is separated by the separation belt 37.
It is guided to the drying/fixing section 38. The paper P is fed at a speed that matches the circumferential speed of the photosensitive drum 27. On the other hand, the remaining toner and developer are wiped off from the photosensitive drum 27 at the edge of the blade cleaner 39, and the next cycle is repeated again.

The transfer paper P is heated by the heater 40 and dried and fixed by the hot air blown from the duct 41 around the heater 40. After removing the electric charge remaining on the surface of the transfer paper P by the static eliminator 41, the transfer paper P is moved to the discharge roller 42. The paper is guided to the discharge port 43 and sent onto the auxiliary tray 44 and the tray 45. When the enlarged image recorded on the two recording bodies is exposed to the photosensitive drum, the recording body 20 moves rightward in FIG. 3 and returns to its original position. By repeating the copying operation, the same enlarged image can be repeatedly copied in succession. Next, if you want to erase the image on the recording body 20 after copying is completed,
An erasing voltage is applied between the pair of electrodes, and the lamp 50 in the upper machine box 12 is turned on to uniformly project light onto the entire surface of the recording medium 20. After erasing, images of other frames on the microfilm can be copied by performing the same operations as described above. Note that instead of lighting the lamp 50, the microfilm may be taken out of the illumination optical path of the illumination section 13, and the entire surface of the recording medium 20 may be uniformly illuminated with light from the illumination section 13. In the above embodiment, the slit exposure is performed by moving the recording body, but the recording body (original teaching pupil stand)
Alternatively, the slit exposure may be performed by fixing the recording medium and moving an optical scanning system that projects the image of the recording medium onto the photosensitive drum 27 in synchronization with the photosensitive drum 27. Next, when copying a reflective original, move the upper machine box 10 to the lower machine box 2.
1, and then the recording body 20 is removed from the manuscript record table, and the reflective manuscript is placed on the manuscript copying position of the manuscript plate with the image side facing down.

By moving the document table at a constant speed as described above, a reflected copy image of the document can be obtained, and the device can be used as a general copying device. In the above embodiment, when a negative film is used as an original for copying, a copy of a positive image can be obtained. By the way, when producing a copy with a negative image from a negative film or a copy with a positive image from a positive film, the process may be changed. That is, in order to make a copy of a negative image from a negative film, first, the entire surface of the recording medium is uniformly exposed to light while a coloring voltage is applied to the recording medium, so that the entire surface of the recording medium is uniformly colored. Next, when an enlarged image of the negative film is projected onto the recording medium while an erasing voltage is applied, an image having the same polarity as the negative film, that is, a negative image, is recorded on the recording medium.

If the image recorded on this recording medium is projected onto a copying section using the slit exposure method in the same manner as described above, a copy having the same polarity as the negative film can be obtained. Therefore, regardless of the gutter quality of the image on the microfilm, it is possible to easily make copies with any gutter quality, and there is no need to change the processing mechanism for the photoreceptor and perform reversal development, etc., as in conventional copying machines. It disappears.
Note that an electroluminescent substance, a photochromic substance, a liquid crystal, etc. can be used as the recording medium. Further, a photosensitive belt may be used instead of the photosensitive drum.

As described above, according to the present invention, a copying apparatus using a reflective original can be used as a copying machine for microfilm.

Furthermore, while an image recorded on a recording medium is being copied, the microfilm can be moved to prepare the next image to be copied, making it possible to efficiently perform copying operations.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing one embodiment of the recording medium, FIGS. 2 and 3 are sectional views showing other embodiments of the recording medium, and FIG. 4 is a copy to which the present invention is applied. FIG.

Turtle 0...Microfilm projection section "11...
・・Copying Department, 15, 16, 17... Mihu " 18
...1 screen, 20...recording body, 27.
...Photosensitive drum.

Solution 1 *Figure 2 Building 3 Leopard 4

Claims (1)

[Claims] 1. A document placing table on which a reflective original is placed; a first optical means for projecting the reflective original placed on the document placing table onto a photoreceptor;
It is equipped with a second optical means for projecting a transparent original onto the original placing table, and an image recording body which is removable from the original placing table and capable of recording and erasing an image, and when copying a reflective original, the original holding table is used. A reflective original is placed on the original plate, and the image of the reflective original is projected onto the photoreceptor by the first optical means.If a transparent original is to be copied, an image recording body is placed on the original placing table, and the image of the transparent original is projected by the second optical means. A copying apparatus characterized in that an image of a transparent original is recorded by projecting an image onto an image recording member, and the image recorded on the image recording member is projected onto a photoreceptor by a first optical means.