JPS62203180A - Board drawing recording device - Google Patents

Abstract

PURPOSE:To record picture information of an original on a board drawing surface and to display it by providing a recording and displaying part, a copying part, and an optical system which guides picture information on the 1st photosensitive body of the recording and displaying part to the 2nd photosensitive body and also guides picture information on the 2nd photosensitive body to the 1st photosensitive body. CONSTITUTION:An original 1 such as a document and a book placed on original platen glass 2 is lighted at the copying part A and at the same time, the 1st mirror 4, the 2nd mirror 5, and the 3rd mirror scans the original at a 2:1 speed ratio. The original image is formed on a photosensitive drum as the 2nd photosensitive body through a lens 7 and the 4th mirror 8 is set as shown by a dotted line. The photosensitive drum 15 is charged electrostatically and uniformly by a charger 9 and exposed to the original image through a slit, and the latent image obtained by this exposure is developed by a developing device 10 to obtain a toner image. This toner image is transferred to transfer paper 11 by a transfer charger 12 and the transfer paper to which the toner image is transferred is fixed by a fixing roller body 13, thus completing copy recording operation only at the side of the copying part A.

Description

[Detailed Description of the Invention] [Industrial Application Field of the Invention] The present invention relates to a board recording device using electrophotography, and a board recording device that records and displays image information of an electrophotographic copying machine on a display board member. It is.

[Conventional technology]

Conventionally, this type of device was developed for the purpose of copying graphic information such as letters and figures written on a white board using electrophotography, and once the copy has been made or the original etc. could not be displayed on the board.

[Problem that the invention seeks to solve]

The present invention makes it possible to record image information of a manuscript on a board and display it, thereby making a conventional board recording device easier to use.

[Means for solving problems]

The board recording device of the present invention includes a first photoreceptor for display;
a recording and display section having means for charging the photoreceptor, a developing means, and means for illuminating image information on the photoreceptor; a second photoreceptor for copying the original on the document table; a copying section having a means for charging a document, a developing means, and a means for illuminating the document; has an optical system that guides image information to the first photoreceptor.

(Embodiment) Figures 1 and 2 are sectional views of main parts of a board recording device showing an embodiment of the present invention. Two modes for copying information are described.

First, we will explain how to use it as a normal copying machine.

In the copying section A shown in the figure, an original 1 such as a document or book placed on the original platen glass 2 is illuminated by the illumination device 3.
The mirror 4, the second mirror 5, and the third mirror 6 scan the original at a speed ratio of 2:1.

The original image is transferred to the photosensitive drum 15 which is the second photosensitive body through the lens 7.
The upper image is formed. The fourth mirror 8 is then set as shown by the dotted line. The photoreceptor tram 15 is uniformly charged by a charger 9, and then the original f-high image is exposed to slit light. The latent image obtained by this exposure is developed by a developing device 10 to obtain a toner image. This toner image is transferred onto transfer paper 11 by transfer charger 12 . Then, the transfer paper onto which the toner image has been transferred is fixed by the fixing roller body 13, and copying and recording only on the copying section A side is completed.

Next, the case of copying characters, figures, etc. written on a writing board member will be explained.

This board member is made of a photoreceptor on a sheet, which is the first photoreceptor, which has an insulating layer made of an insulating film on its surface and a photoreceptor layer whitened with ZnO, etc., and rotates in the direction shown by the arrow. do. The user writes letters, figures, etc. on the photoreceptor sheet 20 from the right side of the recording display area B in the figure using a conventional water-based felt marker or the like. As the photoreceptor sheet rotates, the written characters and figures move to the back side, where they are illuminated by the illumination device 19. The image information on the illuminated photosensitive sheet 20 is
It passes through mirrors 18 and 17, passes through lens 23, and then passes through mirror 16 and mirror 8 of copying section A to photoreceptor drum 15.
imaged on top. At this time, mirror 16 and mirror 8 are set as shown by solid lines. The process for forming the image formed on the photosensitive drum 15 onto the transfer paper 11 is as described above. Note that the image information on the photoreceptor sheet 20 may be scraped off by the cleaning device 21, but it is moved to the display position and then rubbed off by the user.

Next, a method for displaying originals such as documents and books on the photoreceptor sheet 20 will be explained according to FIG.

In the figure, a document 1 is placed on a document table glass 2. The first mirror 4, the second mirror 5, and the third mirror 6 scan the document while the illumination device 3 illuminates the document in the same way as in the method for scanning the document described above. At this time, the mirror 8 is moved to a position out of the optical path. The original image is then formed on a diffuser plate or Fresnel lens 24 projected onto the optical path. The formed image further passes through the mirror 16, lens 23, and mirrors 17 and 18, and is formed onto the photoreceptor sheet 20. Therefore, the lens 23 is moved in advance so that the original image is formed on the photoreceptor sheet.

Here, a method for forming the original image on the photoreceptor sheet 20 will be described. The photoreceptor sheet 20 is rotating in the direction of the arrow, and the photoreceptor sheet 20 is uniformly charged by a charger 25, and then the original image is transferred onto the photoreceptor sheet by a static eliminator (not shown) and slit exposure at the same time. Furthermore, the entire surface is illuminated evenly. As a result, a latent image is formed on the photosensitive sheet, and at this time, the cleaning device 21 is previously retracted to a position where it does not touch the photosensitive sheet. Next, the latent image formed as described above reaches the position of the developing device 22 and is developed, a toner image is created on the photoreceptor sheet, and the sheet 20 is further rotated so that the user can see this recorded image. Stop at a position.

In addition, in the above device, the movement and rotation of the mirror, the movement of the lens, and the approach and separation of the cleaning device are synchronized with the ON-OFF signal of the switch associated with the selection operation of the two modes mentioned above, and the motor, plunger, etc. Displace it using a driving means.

[Other Embodiments] The photoreceptor on the side of the copying section A may be in the form of a belt other than a drum, and the document table glass 2 may be replaced with an eight-shift type document table. Further, the developing device may also serve as the cleaning device for the copying section and the recording/displaying section. In addition, photoreceptor sheet 2
Although the conventional NP process was applied to the photoreceptor 0, other photoreceptors and processes may be used as long as electrophotographic toner development and handwritten writing are possible.

Furthermore, regarding the optical system, an enlarging optical system is used when exposing the photoreceptor sheet 20 from the photoreceptor drum 15, and a reduction optical system is used when exposing the photoreceptor sheet 20 to the photoreceptor drum 15. It becomes possible to display a small document in a large size on the photoreceptor belt which is a display board member. This reduction/enlargement mode conversion can be automatically set by moving the lens, but this magnification mode conversion involves an operation of changing the peripheral speeds of both photoreceptors.

Furthermore, as shown in FIGS. 3 and 4, a gripper 26 for holding the edge of the original sheet and a transparent sheet 27 for holding the entire surface of the original sheet may be provided on the photoreceptor sheet 20 in a removable manner if necessary. It becomes possible to copy image information other than the image information written on the photoreceptor sheet 20 in the copying section. In addition,
In this case, the electrophotographic processing means for the photoreceptor sheet 20 is not operated at all, and only the illumination device 19 is operated.

Incidentally, in order to improve the cleaning effect of the photosensitive belt 20, it is preferable that the cleaning device for the photosensitive belt 20 has a roller, plate, etc. applied to the back side of the belt against a member that rubs against the belt, as shown in FIG.

〔Effect of the invention〕

As explained above, it can be used independently as an electrophotographic copying machine, can copy graphic information such as characters and figures on the board, and can automatically display originals on the board. . Further, with the above configuration, it is possible to display a manuscript such as a document on the display section, discuss it with a plurality of people, add it to the writing board, and immediately copy and output it.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are sectional views of main parts of the board recording device of the present invention,
3 and 4 show cross-sectional views of a member for mounting an original onto a photoreceptor sheet. In the figure, 1 is a document, 3 is a document illumination device, 4 is a first mirror, 5 is a second mirror, 6 is a third mirror, 7 is a lens,
9 is a charger, 10 is a developer, 11 is a transfer paper, 12 is a transfer charger, 13 is a fixing device, 15 is a photoreceptor drum which is a second photoreceptor, 17.18 is a mirror, and 19 is a photoreceptor sheet illumination The apparatus includes a photoreceptor sheet 20 as a first photoreceptor, 22 a developing device for the photoreceptor sheet, 23 a lens, and 25 a jF TtX device for the photoreceptor sheet.

Claims (3)

[Claims] (1) A recording/display section having a first photoreceptor for display, means for charging this photoreceptor, developing means, and means for illuminating image information on this photoreceptor, and a document on a document table. a second photoreceptor for copying; a means for charging the photoreceptor;
a copying section having a developing means and a means for illuminating the original document; and a copying section having a developing means and a means for illuminating the document; A board recording device that has an optical system that guides the light to the photoreceptor. (2) The board recording device according to claim (1), wherein the first photoreceptor has means for holding a sheet original on its surface. (3) The above optical system becomes a reduction optical system when exposing image information from the first photoconductor to the second photoconductor, and conversely becomes an enlarging optical system when exposing image information from the second photoconductor to the first photoconductor. A board recording device according to claim (1).