JPH0762756B2 - Copier information addition device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for adding information, which is not described in a document, onto a copy by a copying machine.

2. Description of the Related Art In copying by a copying machine, it is often necessary to enter information not described in the manuscript, for example, fixed characters such as "date", "page", "company name", "department name", etc. in the corners of the copy. In such a case, in the past, after copying, it was done by filling in by hand or pressing a rubber stamp, but as the demand for copying expands, the amount of work will become enormous and work efficiency will be significantly impaired. It was As means for solving this, an additional information display means for adding information not present in the original is provided on the original table of the copying machine, and this information is scanned together with the original image at the time of exposing the original to form a latent image on the photoconductor. It has been proposed to develop the image together with the original image, transfer it to a transfer paper, and copy the additional information on the copy. As the additional information display means, it is easy for the device to selectively put a tape or the like on which a fixed text is written on one end of the contact glass, but it is necessary to replace the tape or the like one by one to change the display. However, there is a drawback in that it is troublesome to place it so that it does not interfere with the original image. Therefore, by providing a flat display on the contact glass that can change the display content, and switching the display, any additional information is displayed by this and the display is exposed on the photoconductor together with the original image during the scanning of the original image exposure. It has been proposed to form a latent image and display it on a copy. Although a liquid crystal display has been conventionally proposed as this display device, it has a drawback that the contrast between the display portion (image portion) and the background is low due to the characteristics of liquid crystal, and it does not appear clearly when copied by an electrophotographic copying machine. .

The present invention aims to provide an information adding device which solves the above-mentioned drawbacks of the conventional information adding device using a copying machine and which can easily and clearly add to a copy, additional information that is not present in a document. With the goal.

In order to achieve the above object, the present invention uses a reflective electrochromic display as the additional information display means, which is used in the scanning direction from the leading end of the original placement range of the contact glass of the copying machine in the scanning start side. Installed on the upstream side,
The imprinting of the additional information by the display means is performed by scanning the display of the display means at the time of exposure of the original document and advancing the resist of the transfer paper by a distance corresponding to the imprinting width of the additional information from the normal copying. The display means is illuminated only by the light source for exposing the original.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing a main part of a copying machine having an information adding device according to the present invention. Below the contact glass 2 provided on the top plate of the copying machine body 1, an original exposure lamp 3, an exposure system 4 including a mirror and a lens, and a photosensitive drum 5 are provided. Around the photosensitive drum 5, there are provided a charger 7, an exposure position 6 by the above-mentioned exposure science system, an eraser 8, a developing device 9, a transfer charger 10 and the like in this order in the direction of rotation indicated by an arrow. At the transfer position between the body drum 5 and the body drum 5, the transfer paper 13 is fed from the paper feed unit 11 through the registration rollers 12. The configuration described so far is no different from that of the conventional copying apparatus.

However, in this copying machine, a document scale for aligning a document placed on the contact glass 2 for adding information is used.
An additional information display 16 using a reflection type electro-chromic display (hereinafter abbreviated as ECD) is provided on the contact glass at the bottom of 15. When the original placement reference of the copying machine is the central reference, the additional information display 16 is located at the center of the original scale 15 in the longitudinal direction as shown in FIG.
As shown in FIG. 3, additional information is displayed at the center of the reference end of the copy for all sizes of originals. The reading of the display portion is performed by the exposure optical system 4 prior to the reading of the original in the original exposure process for reading the original. At this time, the additional information display 16 is illuminated only by the original exposure lamp 3. Then, a latent image is formed by exposing a preceding portion of the photosensitive drum 5 which is in contact with the original image exposure range, and is developed by the developing device 9 to form a toner image. Therefore, by making the paper feed resister of the transfer paper 13 precede the normal copy by the width corresponding to the additional information imprinting width, as shown in FIG. The additional information 20 is displayed in the center of the reference edge portion of. In this example, the copy date is displayed as the additional information. It should be noted that if both sides of the additional information are erased by an eraser, unnecessary black solid portions can be prevented from being formed on the copy.

The basic structure of the ECD display used as the information display 16 is shown in FIG. 5, and an example of a digital display of a timepiece using this is shown in FIG. FIG. 7 shows the drive circuit.

As shown in FIG. 5, the ECD display has a front substrate glass 21, a front electrode 22, a display electrode 23, an electrolytic solution 24, a background plate 25, a counter electrode 26,
A back electrode 27 and a back substrate glass 28 are laminated. Front electrode 2
2. For the back electrode 27, a transparent electrode such as SnO ₂ film or In ₂ O ₃ film is used. The front electrode 22 plays the role of a lead wire, and the display electrode 23 of α-WO ₃ film is formed on the front electrode 22 in a desired shape such as 7 segments. The electrolyte 24 is a solvent such as γ-butyl lactone or propylene carbonate,
A liquid in which an electrolyte such as BF ₄ or LiClO ₄ is dissolved is injected, and it is a source of Li ⁽⁺⁾ ions and smoothes the electrochemical reaction. A white alumina plate or the like is usually used as the background plate 25 to clearly show the blue display.
The counter electrode 26 is for the display electrode 23, and by applying a voltage between these two electrodes, a color-decoloration reaction occurs.

Since it is difficult to drive the ECD as the display device 16 dynamically, static drive is performed and an open collector output driver is used as the display electrode driver. Apply 1.5V and GND to the COMMON terminal of the opposite electrode. FIG. 7 is a drive circuit diagram of the 4-digit 7-segment display for date recording shown in FIG. The resistance R that limits the current flowing into the counter electrode is made extremely small. To erase the ECD, set the display electrode to GND level and the counter electrode to GND level. To color, turn the display electrode to GND level and turn off Tr1, and apply 1.5V to the counter electrode. The display, which is a feature of ECD, is maintained by keeping the display electrode open and applying a voltage of 1.5V to the counter electrode. In the case of the circuit of FIG. 7, the CPU outputs a display digit select signal, a BCD code for 7-segment output, and a COMMON switching signal. The display procedure is repeated by erasing the entire surface, displaying from the first digit, and maintaining the display state.

Furthermore, by adding an IC for serial / parallel conversion to the CPU output stage, the number of CPU output ports can be reduced. If an IC with a latch function is used, the coloring time can be shortened, and it is also compatible with high-speed machines. it can.

In addition, this method has the feature that the ECD can be driven with an inexpensive circuit by changing the COMMON voltage to 1.5V and GND.

FIG. 8 shows the coloring timing for imprinting the ECD display. When the ECD display is installed on the front edge of the platen, the coloring is started by the signal from the main body before scanning the original by the optical system, all the coloring is completed, and the display scanning is continued when the display is maintained. To scan the original. By prohibiting the change of the display counter in the colored state and the maintained state as described above, it is possible to prevent the display contents from changing during the display scanning to make an unclear copy.

In addition, by using the display maintenance, which is a feature of ECD, when the same information such as the date and company name is copied on multiple sheets, the display maintenance state is maintained (see Fig. 8 (a), page and time). In the case of changing the display for each sheet, the above-mentioned coloring / decoloring cycle is executed (FIG. 8 (b)) In the case of the above (a), it is necessary to initialize the coloring after a certain period of time.
The frequency is extremely low, energy is not consumed during that period, and it can be said that this is a very inexpensive display method.

FIG. 9 is a diagram showing an example of an operation panel of a copying machine having an additional information display. In addition to the operation keys and the display of a normal copying machine, a mode set key 30, a print key 31, an information mode display section 32, An additional information content display section 33 is provided.

The synthetic copy of the additional information on the original is performed as follows. By depressing the print key 31 in FIG. 9, the information addition mode is set, and the type of the additional information and its contents are displayed on the display units 32 and 33 on the operation panel. When the print key is pressed, the type of additional information is changed to "date", "time", "page", "company name", or the like, and when the key is pressed again, the print mode is cleared, and the mode in which no information is added is set. The clock information is input to the counter of the CPU by the input from the external timer or the increment of the internal timer, and the page information is incremented for each copy cycle or for each original when the automatic document feeder (ADF) is installed. Do.

The change of the mode counter, such as time adjustment, is performed by pressing the mode set key 30 and the ten key. At this time, the display on the operation panel is made to blink and the information mode LED is also made to blink.

In the above modes, by performing the coloring / erasing color control, it becomes possible to add information other than the original to make a copy.

When the ADF is used, the document automatically fed onto the contact glass is automatically fed out from the contact glass, and therefore the document scale cannot be provided at the document placement reference edge on the contact glass. FIG. 4 shows how to attach the additional information display in this case. The ECD display 16 as an additional information display is provided near the end surface of the contact glass 2 and outside thereof. In this case, the focal length of the exposure-exposure lens is shorter than the thickness t of the contact glass 2 by 0.32 t due to the refractive index of the contact glass. If the glass is not provided, it is recommended to mount the display so that the position of the display surface is 0.31t below the original placement surface. The shadow on the end face of the contact glass and the dark parts on both sides of the ECD display 16 can be erased from the copy by erasing after charging with an eraser.

In another embodiment shown in FIG. 10, at the bottom of the original scale 15,
A plurality of ECD indicators 16 are provided. By doing so, the additional display can be always recorded in one corner of the copy depending on the document size, and the additional information can be displayed at the position desired by the operator. further,
It is also possible to display multiple types such as date and page. The ECD display to be displayed and the type of information to be displayed are selected with the keys on the operation unit.

As described above, according to the present invention, by using the reflection type ECD display as the additional information display, information not described in the original can be clearly added on the copy. When exposing the image displayed on the reflection type ECD display, it can be read only by the light source for exposing the original, and it is not necessary to provide a dedicated illumination means for compensating the light amount. Moreover, energy saving and extension of life can be achieved with an inexpensive circuit configuration. Also AD
It is easy to install the additional information display even when the F is attached, and by providing more than one display, it becomes possible to write the additional information at the desired position according to the user's request or the document size. The utility of the copying machine can be further improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an example of a copying machine having an information adding device of the present invention, FIG. 2 is a plan view of the vicinity of the additional information display section, and FIG. 3 is a plan view of an example of a copy made thereby. 4 and 5 are sectional views showing another method of mounting the additional information display device, FIG. 5 is a sectional view illustrating the structure of the ECD, and FIG. 6 is E.
FIG. 7 is a plan view showing an example of a CD display, FIG. 7 is a circuit diagram showing a driving circuit thereof, FIG. 8 is a timing chart at the time of writing additional information by the ECD display, and FIG. 9 has an additional information display. FIG. 10 is a plan view showing an example of the operation panel of the copying machine, and FIG. 10 is a plan view showing an example of the arrangement when a plurality of display devices are provided. 1 ... Copier body, 2 ... Contact glass, 4 ... Exposure system, 5 ... Photoconductor, 12 ... Registration roller, 15 ... Document scale, 16 ... ECD display (additional information display means) ), 26 …… Counter electrode

Claims (2)

[Claims] 1. An apparatus for adding information not described in a manuscript onto a copy by a copying machine, wherein the additional information display means is formed by using a reflective electrochromic display, which is a contact glass manuscript of the copying machine. Placed on the upstream side in the scanning direction from the leading edge of the scanning start side, the additional information is imprinted by the display means when the document is exposed When the display of the display means is scanned by the exposure optical system and the resist of the transfer paper is normally copied. An information adding apparatus characterized in that it is performed by advancing by a width corresponding to the additional information imprinting width, and the display means at the time of imprinting is illuminated only by the light source for exposing the original. 2. The drive circuit is constructed such that the additional information display means is driven by switching the voltage applied to the counter electrode of the reflective electrochromic display forming the additional information display means. Range 1st
The information adding device described in the item.