JPS58192062A - Copying machine provided with data adding function - Google Patents

Abstract

PURPOSE:To easily add a data image to original picture information, by directly exposing a data picture which has no mention on an original, to a photoreceptor in the course of a copying process. CONSTITUTION:A rectangular plate-like picture indicator 16 is installed to a part of a slit 8' of a slit member 8. As for the picture indicator, for instance, a transmission type liquid crystal indicator or a transmission type electrochromic indicator is used. Therefore, at the time of exposure of an original 1, when a character is formed on the picture indicator 16 only for a necessary exposure time by making for instance, a data on the original 1 synchronize with the time when a part whose display is desired is exposed, a data picture can be exposed by overlapping it on an original image on a photoreceptor 10. In this regard, in case when display of varying information is required, it is represented by a digital character, and when display of fixed information is required, and a distinct display is requested, they are represented by an analog character. In this way, a data can be added easily to original picture information.

Description

[Detailed description of the invention] The present invention relates to a copying machine with a data addition function.

The photoreceptor is uniformly charged in the dark, and the copy document on the document table is irradiated with light from the main exposure light source, and the reflected light is passed through the exposure optical system to the photoreceptor after being uniformly charged as described above. In a copying machine, the electrostatic latent image of the original image carried on the photoreceptor is visualized by being guided to the photoreceptor and then transferred to recording paper to obtain a recorded image. In many cases, if data images such as the date, number of pages, and distribution destination are recorded, administrative processing using the recording paper can be carried out smoothly.

However, in the past, these data images were, of course,
If writing is not done on the original in advance, it will not be recorded on the recording paper, so if you miss writing on the original and it is absolutely necessary to record the data image, you will need to write on a large number of recording papers after copying. It is complicated as it requires additions.

The present invention has been made in view of the above-mentioned circumstances, and it is possible to easily add a data image to original image information by directly exposing a photoreceptor to a data image that is not written on the original in the copying process. The purpose is to provide a copying machine with additional functions.

The present invention will be explained in detail below.

The copying machine according to the present invention has a light-transmissive image display disposed in a region close to the surface of the photoconductor extending from the exposure process section of the original image to just before the development process section, and in a region close to the photoconductor; By using an auxiliary means to prevent the electrostatic latent image of the data image from the image display device from disappearing due to the photoconductive effect accompanying the exposure of the document image, the document image is displayed on the photoreceptor as well as the image by the image display device. The present invention is characterized in that the data image is also exposed to form an image.

FIG. 1 shows the main structure of a slit exposure type copying machine, which is one form of copying machine suitable for carrying out the present invention.

In the figure, reference numeral 1 indicates a document, which is placed on a document table 2. As shown in FIG. Reference numeral 11 is a projection lens fixedly placed so that the optical axis O is approximately parallel to the document table 2, and reference numeral 3 is a first movable lens that is installed in front of the optical path so that the optical axis O is perpendicular to the optical axis O. Reflection bell, code 4, is approximately 45° with respect to the optical axis O above.
A second movable reflector is tilted and installed so that its reflective surface faces the document table 2 and the first reflector 3. Reference numeral 5 denotes a tubular main exposure light source installed integrally with the second movable reflector. Reference numeral 6 indicates a first fixed reflector installed diagonally behind the projection lens 11, reference numeral 7 indicates a second fixed reflector installed corresponding to the first fixed reflector 6, and reference numeral 8 indicates a rear of the second reflector 7. Directly below the slit member 8 in the figure, a photosensitive layer made of a photoconductive material attached to the outer circumferential surface of the rotating drum 9 is shown, and as the drum 9 rotates, the photosensitive layer body is kept constant. It is being fed in the direction of arrow a at a circumferential speed of . Reference numeral 9α indicates the rotation axis of the drum 9.

The optical path length from the lens 11 to the original 1 and the optical path length from the lens 11 to the photoreceptor 10 directly below the slit are set to be equal at the solid line position shown in the figure. Second
The movable reflecting mirror 4 is arranged parallel to the original 1 and parallel to the photoreceptor 1.
The first movable reflector 3 can move in the direction of the arrow at the same speed as the circumferential speed of
It can move in the same direction as the movable reflector 4 at the same speed as the movable reflector 4. Therefore, both optical path lengths are always kept equal even if both movable reflecting mirrors 3.4 are moved. The second movable reflecting mirror 4, together with the main exposure light source 5 that is turned on, moves from the solid line position shown in the drawing to the broken line position 4A to scan the original 1, and at the same time, the first movable reflecting mirror 3 moves from the solid line position shown in the drawing to the broken line position 4A. Move to position 3A. Therefore, the lens 11 projects and forms the image of the scanned document l onto the photoreceptor 10 that is sequentially fed.

The main members necessary for the copying process and arranged around the rotating drum 9 are illustrated in the direction of the arrow α. First, reference numeral 12 indicates a main charger, reference numeral 13 indicates a developing device, reference numeral 14 indicates a transfer unit, reference numeral 15 indicates a cleaning unit, and reference numeral 16 indicates a static eliminator. Here, the area where the main charger 12 and the photoreceptor 10 face each other is a charging process section, the area where the developer 13 and the photoreceptor 10 face each other is a development process area, and the area directly below the slit 8' of the slit member 8 is an exposure process section. Department. The slit 8' is a rectangular opening formed in the slit plate 8 and elongated in the direction of the rotation axis 9a.
An image display device 16 in the form of a rectangular plate is attached to the portion ``, as shown in FIGS. 2 and 3.

As this image display device, for example, a transmissive liquid crystal display (L
CD) or transmission electrochromic display (ECD)
) is used. The above-mentioned type of image display is usually a transparent body, and by selectively applying a voltage, for example, a third
A date character as a data image as shown in the figure can be represented as a light-opaque drawing line. In this case, the so-called /eding function may also be used. Alternatively, the transparent portion and the opaque portion may be reversed.

Thus, when exposing the original 1, if characters are formed on the image display 16 for the required exposure time in synchronization with the exposure of the part of the original 1 where the date is to be displayed, the photoreceptor A data image can be exposed onto the image 10 overlapping the original image.

In this example, since the data image is exposed using the exposure light of the original image, there is a risk that the electrostatic latent image of the data image from the image display will disappear due to the photoconductive effect accompanying the exposure of the original image. That's not it.

Here, to explain the display format of the data image displayed by the image display 16, there is one display format in which the entire display surface can selectively form an opaque portion at the pixel level. Each time a data image to be displayed is displayed, it is displayed as a composite character by combining pixels. Although this display form allows the expression of all kinds of characters, it has the disadvantage that it is somewhat unnatural and lacks clarity because it is a composite character, depending on the pixel size. As another display form, there is also a display form in which one completed character is displayed instead of the above-mentioned combination of pixels. Although this display form can only display preset characters, smooth, beautiful, and clear characters can be obtained.

When implementing the present invention, if variable information needs to be displayed, the former type of digital characters will be used, and if fixed information needs to be displayed or clear display is required, the latter type of analog characters will be used. express.

When the image display device 16 is arranged with the longitudinal direction aligned with the axial direction of the rotation axis 9α, the data image is entirely exposed, and the fourth
In the latent image area indicated by reference numeral 17 in the figure, a data image is formed which extends in a direction perpendicular to the direction of arrow α, as indicated by reference numeral 18. On the other hand, if it is desired to form a data image that extends in the direction of the arrow α, as shown by reference numeral 18', simply align the image display 16 in the longitudinal direction with the direction of the arrow a. I placed it,
It is not possible to expose the entire data image at the same time because some portions are outside the width of the slit exposure light and both ends are separated from the photoconductor 10 due to the curvature of the rotating drum 9. Therefore, in this case, the image display is curved to match the curvature of the rotating drum 9, and a dedicated light source is provided at the back. Furthermore, it is necessary to take care that the area on the photoreceptor 410 through which the image display device passes is not erased by the light of an appropriate light shielding part that prevents the light from the main exposure light source 5 from reaching it.

Alternatively, in addition to the above-mentioned measures, as shown in FIG. 5, the image display device may be configured to have a size corresponding to one character as shown by the reference numeral 16', and the image display device 16' may be arranged perpendicularly to the arrow α. It can be displayed in units of many lines in the direction, and the photosensitive 4T
It can also be executed by exposing one line at a time in synchronization with the moving speed of o. The example in FIG. 5 shows an example in which the number "6" is displayed line by line.

In addition, in the example described above and each side described below,
Whether or not to interpose an imaging optical system between the image display device and the photosensitive layer depends on the clarity and size of the data image from the image display device, but it is possible to have a configuration in which the imaging optical system is brought close to the point of contact. In that case, no imaging optical system is used. When forming small characters but requiring a high degree of sharpness, an appropriate imaging optical system is used.In this case, the proximity of the image display device is determined by Of course, it is determined by performance.

In each of the above methods, the image display is permanently installed on the exposure light path of the original image by the main exposure light source, but in addition to this method, the image display can be set so that it can move in and out of the exposure light path. However, there is also an example in which an image display device is interposed on the exposure optical path only when exposure using a data image is required.

FIG. 6 shows an example of this, in which the image display device 160 is fixed to a cantilevered rotation shaft 19, and as shown in FIG. It is possible to selectively adopt two positions. This example is suitable when the transparency of the image display 160 is poor.

Note that for an image display device 16' shown in FIG. 5, which is small in size, the movement stroke is also small, so the device itself is moved in the direction of the rotation axis 9a as shown in FIG. 14 to move it in and out. There is also a method of arranging it relatively in the direction of mark a, in front of the slit 8' (but behind the main charger 12).

In this case, since the exposure light of the original image cannot be used as the exposure light of the data image, a dedicated light source 21 is integrally assembled on the back as shown in FIG. 9.

As this dedicated light source 21, for example, EL is used.

Furthermore, since the document image is exposed after the data image is exposed, if the rain exposure areas overlap, there is a risk that the electrostatic latent image of the data image will disappear due to the photoconductive effect. Therefore, an auxiliary means for preventing the snoring latent image from disappearing is also used.

As an auxiliary means, as shown in FIG. 10, a black plate that is a part of the document table 2 and is large enough to sufficiently cover the data image is placed in a portion corresponding to the exposure area of the data image on the photosensitive ★10. There is an example of installing 22. Or as shown in Figure 11,
There is also an example in which the starting position of the main exposure light source 5 is delayed by a distance S from the starting position when no data image is exposed, and a region on the photosensitive area 1nto corresponding to this distance S is exposed with the data image.

In this case, a clutch for controlling the driving of the main exposure light source 5 or a switch circuit for adjusting the on/off timing of the motor corresponds to the auxiliary means according to the present invention. As a modification of this example, an example may be considered in which the lighting timing of the lamp of the main exposure light source is set to the starting position. In that case, a switch circuit for adjusting the on/off timing of the lamp corresponds to the auxiliary means according to the present invention.

Still another example of the auxiliary means is as shown in FIG.
Integrated with the reflector 50 of the main exposure light source 5'/Yashitar 23
There is also a way to set up This shutter 23 is closed only until the electrostatic latent image formed by the data image passes through the exposure process section, and is controlled to be open at other times.

It should be noted that the location of the seven-layer mirror 23 is not limited to the location where it is attached to the reflecting plate 50 as in the above example, but may be located anywhere along the exposure optical path from the main exposure light source to the photoreceptor.

The present invention can also be applied to a full exposure type copying machine as shown in FIG. In the figure, a document 41 on a document table 40 is shown.
The entire surface is illuminated at once by the main exposure light source 42, 43,
The reflected light passes through the reflection f#, 44, the imaging lens 45, and the reflecting mirror 46, and forms an image on the 7=L-shaped photoreceptor 48 on the photoreceptor support plate 47, thereby carrying an electrostatic latent image thereon.

Note that, prior to the exposure, the photoreceptor 48 is charged by the main charger 51 as the elastic member 49 contracts and the take-up drum 5o rotates.
It is assumed that the battery is uniformly charged in the dark. Now, the electrostatic latent image is transferred to the transfer drum 52 while being wound around the winding drum 5o, then developed, and transferred to the recording paper.

In this example, the image display 1600 is placed close to the photoreceptor 48 in the exposure area. As this image display 1600, for example, as described above, a transmissive liquid crystal display or a transmissive electric or amic display is used. The light from the main exposure light source 42, 43 is used as the exposure light for the data image, but if the amount of light is insufficient, there is an LE on the back.
Dedicated light sources such as D are stacked to provide sufficient exposure light for exposure.

In the present invention, - The display content of the image displayed by the image display device can be changed using a numeric keypad provided on the operation panel of the copying machine. It is also possible to select whether or not to add a data image to the recording paper. If the content of the data image is a date, it may be displayed in conjunction with the appearance of a digital clock.

[Brief explanation of the drawing]

Figure 1 is a diagram explaining the main part configuration of a slit exposure type copying machine, Figure 2 is a diagram explaining how the image display is attached to the slit member, Figure 3 is a front view of the image display, Figure 4 is a diagram explaining the relationship between the orientations of data images on the photoreceptor, Figure 5 is a diagram explaining one form of image display by an image display, and Figures 6 and 7 are diagrams explaining the relationship between the orientations of data images on the photoreceptor. An explanatory diagram when the light source is movable, a perspective view illustrating the configuration in which the light sources are combined, and the first
0 to 12 are explanatory diagrams each illustrating aspects of the auxiliary means, and FIG. 13 is a diagram illustrating the main part configuration of a full exposure type copying machine. 16, 16', 160. 160', 1600
・Image display.

Claims (1)

[Claims] 1. A photoreceptor is uniformly charged in the dark, while a copy document on a document table is irradiated with light from a main exposure light source, and the reflected light is transmitted through an exposure optical system to the above-mentioned photoreceptor. In a copying machine, the electrostatic latent image of the original image carried on the photoreceptor is visualized by uniformly guiding it to the charged photoreceptor, or after being visualized, it is further transferred to recording paper to obtain a recorded image. , A light-transmissive image display device is disposed in a region close to the surface of the photoconductor extending from the charging process section to the area immediately before the development process section, and a light-transmissive image display device is disposed in a region close to the photoconductor, and the photoconductor displays the original image as well as the above-mentioned image. 1. A copying machine with a data addition function, characterized in that a data image displayed on an image display is also exposed to form an image. 2. A copying machine with a data addition function, wherein the photoconductor according to claim 1 is a photoconductive photoconductor wound around the circumferential surface of a drum-shaped rotating body. 3. A copying machine with a data addition function, wherein the image display according to claim 1 is a transmissive liquid crystal display or a transmissive electrochromic display. 4. The image displayed on the image display device according to claim 3 is a digital character synthesized by a combination of pixels when it relates to variable information, and it is a digital character synthesized by a combination of pixels when it relates to fixed information. A copying machine with a data addition function characterized by analog characters. 5. A copying machine with data addition function, characterized in that the exposure method of the copying machine according to claim 1 is a full-surface exposure method. 6. A copying machine with data addition function, characterized in that the exposure method of the copying machine according to claim 1 is a slit exposure method. 7. A copying machine with a data addition function, wherein the data image according to claim 1 is a full-screen image suitable for full-screen exposure. 8. The data image recited in claim 1 is provided in accordance with the relative movement speed in the case of a slit exposure method in which the photoreceptor moves relative to the image display when exposing the original image. A copying machine with a data addition function characterized in that the image is a line image that is guided to a photoreceptor one line at a time. 9 The degree of proximity of the image display device recited in claim 1 to the photoconductor means that the image data of the image display device is directly imaged on the photoconductor under conditions where no imaging optical system is interposed between them. 1. A copying machine with a data addition function, characterized in that the data addition function is to a certain extent. 10 The degree of proximity of the image display device according to claim 1 to the photoreceptor is such that an appropriate imaging optical system can be interposed to form an image of the image data of the image display device onto the photoreceptor. A copying machine with a data addition function, characterized in that the data addition function is determined by the gap between the data additions. 11 The image display device according to claim 1 is set to be able to move in and out on the exposure light path of the original image, and the light for exposing the data image onto the photoreceptor is provided at the back of the image display device. The data is characterized in that the light from the main exposure light source is limited to at least an area corresponding to the image display and is blocked in synchronization with the exposure of the data image. Copy machine with additional functions. 12. A copying machine with a data addition function, wherein the dedicated light source according to claim 11 is an EL. 13 The image display device according to claim 1 is set to be able to move in and out on the exposure light path of the original image, and the light for exposing the data image onto the photoconductor uses light from a main exposure light source. 1. A copying machine with a data addition function. 14 Uniformly charge the photoreceptor in the dark, and irradiate the copy original on the document table with light from the main exposure light source and pass the reflected light through the exposure optical system to uniformly charge the original as described above. In a copying machine, the electrostatic latent image of the original image carried on the photoreceptor is visualized, or is further transferred to recording paper to obtain a recorded image. A light-transmissive image display device is placed in a region close to the surface of the photoreceptor extending from the area immediately before the developing process area, and a light transmission type image display device is placed in the area close to the photoreceptor. Using an auxiliary means as a means for preventing the electrostatic latent image of the data image from the image display from disappearing, in addition to the original image, the data image from the image display is exposed onto the photoreceptor to form an image. A copying machine with a data addition function. 15. A copying machine with a data addition function, wherein the photoconductor according to claim 14 is a photoconductive photoconductor wound around the circumferential surface of a drum-shaped rotating body. 16. A copying machine with a data addition function, wherein the image display according to claim 14 is a transmissive liquid crystal display or a transmissive electrochromic display. 17. The image displayed on the image display device according to claim 16 is a digital character synthesized by a combination of pixels when it relates to variable information, and it is a digital character synthesized by a combination of pixels when it relates to fixed information. A copying machine with a data addition function characterized by analog characters. 18. A copying machine with a data addition function as set forth in claim 14, wherein the exposure method of the copying machine is a full-surface exposure method. 19 The exposure method of the copying machine according to claim 14 is a slit exposure method, and the auxiliary means controls the exposure light path from the main exposure light source to the photoreceptor during the exposure process of the original image.
A copying machine with a data addition function, characterized in that the copying machine has a light shielding member that shields at least an area that covers a data image and for a required exposure time in synchronization with the exposure of the data image. 20. A copying machine with a data addition function, wherein the light shielding member according to claim 19 is a so-called /YATTER. 21 The light shielding member recited in claim 19 is a member that covers part of the document placement surface of the document table in black, and its size is at least large enough to cover the data image on the photoreceptor. 1. A copying machine with a data addition function, characterized in that the copying machine has a large area. 22. Data addition characterized in that the auxiliary means according to claim 14 is an electrical switch circuit that synchronizes with the exposure of the data image and turns off the main exposure light source only during the exposure time. Functional copy machine. 23 The data image described in claim 14 is:
A copying machine with a data addition function characterized by a full-screen image suitable for full-scale exposure. 2. In the case of a slit exposure method in which the photoreceptor moves relative to the image display when exposing the original image, the data image according to claim 14 is generated in accordance with the relative movement speed. A copying machine with a data addition function characterized in that each line of information is a line image guided to a photoreceptor. 25 The image display device according to claim 14,
A copying machine with a data addition function, characterized in that the degree of proximity to the photoreceptor is such that the image data of the image display is directly formed on the photoreceptor under conditions without intervening an imaging optical system. . 2. The degree of proximity of the image display device according to claim 14 to the photoreceptor may be determined by interposing an appropriate imaging optical system to image the image data of the image display device onto the photoreceptor. A copying machine with a data addition function, characterized in that the data addition function is determined by a required gap. 2. The image display device according to claim 14 is set to be able to move in and out on the exposure light path of the original image, and the light for exposing the data image onto the photoreceptor is provided at the back of the image display device. The light is from a dedicated light source provided, and the light from the main exposure light source is limited to at least an area corresponding to the image display and is blocked in synchronization with the exposure of the data image. Copy machine with data addition function. 28 The dedicated light source recited in claim 27 is an LE
A copying machine with a data addition function characterized by D. 2. The image display device according to claim 14 is set to be able to move in and out on the exposure light path of the original image, and the light for exposing the data image onto the photoreceptor is the light from the main exposure light source. A copying machine with a data addition function characterized in that the copying machine is used for use.