JPS6157952A - Image display and recording device - Google Patents

Abstract

PURPOSE:To form images stably for a long time and to correct and delete images easily by forming an electrostatic latent image corresponding to a picture signal on an electrostatic recoding material belt with a multineedle electrode and developing this latent image with a developing device and carrying the developed image to a display part provided with a display device to observe the image. CONSTITUTION:An electrostatic recording material belt 12 is allowed to pass between a multineedle electrode 14 and a back electrode 16, and a voltage corresponding to the picture signal is applied to the multineedle electrode 14 to form the electrostatic latent image corresponding to the picture signal on the electrostatic recording material belt 12. The electrostatic latent image on the electrostatic recording material bent 12 is developed to a visible image by a developing device 18 such as a magnetic brush developing device or the like. This developed image is carried to an image display part provided with a display window 20, and the electrostatic recording material belt 12 is stopped there. Thus, the image formed on the electrostatic recoding material belt 12 is observed through the display window 20 and is corrected or deleted easily by a needle electrode pen 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image display/recording device that displays an image formed on a recording medium and records this image on paper as necessary.

Conventional technology: As a filing system, information is recorded on microfilm, and when retrieving this information, a microfilm reader/printer is used to first display the information on the microfilm reader and select the necessary information. A microfilm printer is used to obtain copies of the required images. Storing information in the form of macrofilm requires much smaller filling space than when storing information written on paper. For this reason, in recent years, a filing system has become mainstream in which patent publications and the like are stored on microfilm and are not taken out as copies when necessary.

However, when using microfilm, information is stored! Microfilm is not suitable for storing Odori information because of its limitations. Therefore, in recent years, optical disks have been attracting attention as a device having a large storage density. If the information stored on the disk is to be retrieved in the future, the necessary information is converted into an electrical signal, such as a CR
The information is displayed on T, the necessary information is selected on C, and if necessary, the image is printed out using a printer.

In recent years, a photosensitive belt has been used to form an electrostatic latent image on the photosensitive belt using radar light that is turned on and off in accordance with the image signal, and this is developed using a development tool and then developed through a display window. Devices that can observe images have been proposed.

According to this apparatus, images are formed on the photosensitive belt by an electrophotographic process, so that images that are no longer needed can be erased and new images formed any number of times and observed through a display window.

Problems to be Solved by the Invention However, in the above-mentioned device that uses radar light to form an electrostatic latent image on the photoreceptor belt according to an image signal, the photoreceptor belt is constantly exposed to light entering through the display window. This has the disadvantage that the photosensitive belt deteriorates due to optical fatigue. For this reason, an electrostatic display printer using an electrostatic recording belt was proposed, but it still had the inconvenience of having to perform image correction work after printing.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an image display/recording apparatus that overcomes the above-mentioned drawbacks of the prior art, is capable of stable image formation over a long period of time, and is capable of easily modifying and deleting the image being displayed.

Means for Solving the Problems In order to solve the problems of the prior art described above, according to the present invention, an electrostatic recording belt is used as a recording medium in place of the photosensitive belt of the prior art. Furthermore, a static latent image is formed on the electrostatic recording belt using a multi-needle electrode according to the image signal, and after being developed by a developing device, it is transported to a display section provided with a display window so that the image can be observed. ] was accomplished. As described above, according to the present invention, since the electrostatic recording belt is used as a static recording medium, the recording medium is not deteriorated by light entering through the display window. As a result, stable image formation can be performed forever. The unnecessary toner image on the electrostatic recording belt is cleaned by a cleaning device, and the unnecessary electrostatic latent image can be erased by AC corona irradiation. It can be repeated many times to form new images. Furthermore, according to the present invention, since the transfer means is arranged so as to be able to move toward and away from the electrostatic recording belt, the image displayed on the display window and required as a copy is transferred onto the transfer paper by the transfer means, This can be fixed on a fixing device to obtain the required copy. The transfer means generally comprises a transfer roll, which is usually located at a distance from the electrostatic recording belt. When it is desired to obtain a copy, this transfer roll is rotated so as to come into contact with the electrostatic recording belt, and the toner image on the electrostatic recording belt is once transferred onto the transfer roll, and then from this transfer roll to the transfer paper. Further transcription is made above. As described above, according to the present invention, the image on the electrostatic recording belt can be observed through the display window, and this image can be taken out as a hard copy if necessary.

The present invention will be explained in more detail below with reference to the drawings. First, referring to FIG. 1, there is shown a cross-sectional view of an image display/recording apparatus according to the present invention, in which an endless electrostatic recording belt 12 is stretched between three rolls, and a drive (not shown) is shown. The electrostatic recording belt is intermittently driven by the device. A multi-needle electrode 14 and a back electrode 16 are provided with the electrostatic recording belt 12 in between, and a developing device 18 is provided downstream of the multi-needle electrode 14. A display window 20 made of glass or transparent plastic is provided on the front surface of the housing 1o, and a developed and visualized image can be observed through this display window 20.

When observing an image on the recording belt through the display window 20, the electrostatic recording belt is usually stopped and observed, but depending on the situation, it may be observed while being rotated. 22 is Qi (, ``1 device, and this Qi (
The hanging device 22 is configured to clean the toner image on the recording belt 12, and a static eliminating corotron 24 is further provided on the downstream side of the terminal device 22, and this static eliminating corotron 24 statically removes AC corona irradiation. By applying this to the electrostatic recording belt, the unnecessary 17I electrostatic latent image on the electrostatic recording belt 12 can be reduced to tl'J :kV.

Referring to FIG. 2, there is shown a partially cutaway perspective view of the device of the present invention mainly showing the display window portion of the present invention.
A five-D brush 25 is provided hanging down from 11126, and the upper end of the string 26 is wound around a roller 28. The roller 28 is attached to the other roller 32 on the two shafts.
is provided, and this roller 32 is configured to be rotated by the drive roll 30 via a clutch means or the like as required. The side of the display window 20 made of glass or the like facing the electrostatic recording belt becomes dirty due to toner adhesion as it is used repeatedly. In this case, by engaging the clutch, the row 528 is rotated so that the cleaning brush 25 cleans the inside of the display window. The display window 2o can be opened and closed by removing it or using a hinge (not shown). When you want to correct the displayed image, use the needle electrode to neutralize the charge of the image on the belt. The needle electrode ben 15 supplied from the power supply 17 releases the toner of the image from being absorbed by the belt surface, and the removed toner is transferred to the toner receiver (not shown).
The pen tip of the a-side electrode ben 15 that is collected can be replaced with a needle-shaped or plate-shaped one depending on the purpose.The pen tip is hollow and can be used in combination with a vinyl tube, a blower (not shown), etc. to If the neutralized toner is sucked up as is, the toner receiver becomes unnecessary and work efficiency can be improved.

Referring again to FIG. 1, a transfer roll 34 is provided on the electrostatic recording belt 12 so as to be able to move toward and away from it.

This transfer roll 34 is normally urged to a position not shown by the dotted line,
It is separated from the electrostatic recording belt 12, and when it is desired to obtain a copy, it is rotated to the position shown by the solid line in the figure and acts as a transfer [1-] wheel. Reference numeral 36 denotes a transfer paper supply tray in which transfer paper 38 is stacked and stored.

This transfer paper 38 is supplied by rotating a transfer paper supply roll 40, and the toner on the transfer roll 34 is transferred onto the transfer paper 38 while passing between the transfer roll 34 and a backup roll 42. The transfer paper 38 then passes between fixing rolls 44 for 1°, thereby fixing the toner image on the transfer paper and ejecting it into a receiving tray 46.

Operation The operation of the image display/recording apparatus of the present invention configured as described above will be explained below. By passing the electrostatic recording belt 12 between the multi-needle electrode 14 and the back electrode 16 and applying a voltage corresponding to the image signal to the multi-needle electrode 14, a voltage corresponding to the image signal is applied to the electrostatic recording belt 12. form an electrostatic latent image. Next, the electrostatic latent image on the electrostatic recording belt 12 is developed into a visible image by a developing device 18 such as a magnetic brush developing device. The developed image is then conveyed to an image display section provided with a display window 20, where the electrostatic recording belt 12 is preferably stopped. In this way, the electrostatic recording material belt 1
The image formed on 2 can be observed through the display window 20. If there is an unnecessary part in the displayed image, it can be easily corrected and deleted using the one-electrode ben 15 as described above.

According to the present invention, since an electrostatic recording belt is used as the recording medium, the recording medium will not be deteriorated by light from the display window 20. When the image observation is completed, the electrostatic recording belt 12 is driven again and the cleaning device 22 scrapes the toner off the electrostatic recording belt to clean it, and then the corotron 24 applies alternating current onto the electrostatic recording belt. By applying corona irradiation, the electrostatic latent image on the belt is erased.

If you wish to keep a copy of the image observed through the display window 20, the transfer roll 34 is swung from the position shown by the dotted line to the position shown by the solid line and brought into contact with the electrostatic recording belt 12. A bias voltage is applied to the transfer roll 34. By applying this, the toner image on the electrostatic recording belt 12 is transferred to the transfer roll 34. On the other hand, by rotating the transfer paper supply roll 40, the transfer paper 38 is passed between the transfer roll 34 and the backup roll 42, and by applying a bias voltage to the backup roll 42, the toner image on the transfer roll 34 is Transfer onto transfer paper 38. The toner image on the transfer paper 38 is then passed between fixing rolls 44 to be fixed as a permanent image and discharged into a paper receiving tray 46.

The electrostatic recording belt 12 of the present invention has a two-layer structure in which a dielectric layer is provided on a conductive substrate, or a conductive layer is provided on the substrate and a dielectric layer is further provided on the conductive layer. Any three-layer, 474-story structure can be adopted.

Effects of the Invention Since the image display/recording device of the present invention employs an electrostatic recording belt as the image recording medium, it is stable against light;
It is also inexpensive and has a long life. Furthermore, since an image corresponding to an image signal is formed on the electrostatic recording belt using multi-needle electrodes, the entire apparatus can be simplified. By providing a transfer roll that can be freely moved toward and away from the camera, the necessary image observed through the display window can be immediately taken out as a copy. Furthermore, since the image can be corrected and deleted on the display screen, the same operation that was conventionally performed after copying is no longer necessary.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the image display/recording device of the present invention, and FIG. 2 is a partially broken perspective view of the device of the present invention mainly showing the display window. 12: Electrostatic recording belt 14: Multi-needle electrode 16: Back electrode 18: Conditioning device 20: Display window 22: Cleaning device 24: Corona discharger 34: Transfer roll 38: Transfer paper 42: Backup roll 44: Fixing roll

Claims (1)

[Claims] A developing device that has a multi-needle electrode close to an endless electrostatic recording belt, forms an electrostatic latent image on the electrostatic recording belt according to an image signal, and develops this electrostatic latent image to make it visible. A display window for displaying the developed image is provided downstream of the developing device, and a needle electrode pen is provided for partially modifying and deleting the image displayed in the display window. An image display/recording device characterized in that a means is provided on the electrostatic recording material belt so as to be able to come into contact with and separate from the electrostatic recording material belt, thereby transferring a developed image on the electrostatic recording material to a transfer sheet as required.