JPS62297870A - Image forming device - Google Patents

Abstract

PURPOSE:To automatically form required items other than an original image by arranging a light emitting body for forming an electrostatic latent image for a required item near an image carrier in an image forming device for developing the electrostatic latent image of an original. CONSTITUTION:A photosensitive drum 2 to be an image carrier is freely rotatably arranged and the electrostatic latent image of an original image is formed on the surface to the drum 2 by projecting light passed through an optical path K to the surface of the drum 2. The light emitting body consisting of an LED is arranged near the drum 2 to project an image of a required item such as a date other than the original image to the surface of the drum 2. When light from the light emitting body 4 is projected to the charged drum 2 under the state that the optical path K is closed by a shutter 24 to form the electrostatic latent image of a date or the like. This latent image is superposed to the latent image of the original and then developed through a prescribed process. Thus, the date or the like is automatically formed simultaneously with the formation of the original image.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Object of the Invention] (Field of Industrial Application) The present invention relates to an image forming apparatus used as, for example, an electronic copying machine.

(Prior Art) Generally, an electronic copying machine includes a photoreceptor drum in its main body, and an exposure mechanism forms an electrostatic latent image of a document on the photoreceptor drum, and this electrostatic latent image is developed by a developer. Then, this developer image is transferred to paper.

(Problems to be Solved by the Invention) However, in the past, it was not possible to record desired information other than the original image on the paper, such as the date and page, and it was not possible to record desired information on the paper, such as the date and page, and it was not possible to record the desired information on the paper by hand after copying. I had to write it, and it became fJft'l.

The present invention is based on the above J$f? The purpose of this invention is to provide an image forming apparatus that can automatically form desired items other than original images.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention is characterized in that a light emitter that forms an electrostatic latent image of a desired item is provided near the carrier. It is.

(Function) By forming an electrostatic latent image of the desired matter on the image carrier by the light emission of the luminous body, and developing this electrostatic latent image with a developing device, the desired matter can be automatically formed. .

(Example) The present invention will be described below with reference to an example shown in the drawings. In the figure, reference numeral 1 denotes a main body of an electronic copying machine, and a photosensitive drum 2 as an image carrier is rotatably provided approximately in the center of the main body 1. Further, around the photosensitive drum 2, a charger 3 and a light emitting body 4 are arranged in order along the rotation direction of the photosensitive drum 2.
, a developing device 5, transfer peeling chargers 6a and 6b, and a cleaning device 7 are provided.

Further, an exposure mechanism 8 is provided on the upper side of the main body 1. The exposure mechanism 8 includes a lamp 9, first to third mirrors 10 to 12, a lens e13, and a fourth mirror 14. The lamp 9 and the first to third mirrors 10 to 12 are moved to the document table by a drive mechanism (not shown).
5 so that it is moved back and forth along the road.

On the other hand, there is a paper feed cassette 16 m on the lower side of one side of the main body 1.
, 16b are detachably attached.

The sheets P in the paper feed cassettes 16m, 16b are sequentially taken out one by one by the rotation of paper feed rollers 17m, 17b and are transported along a transport path 18KG.

The conveyance path 18 includes a registration roller 19 and a transfer peeling charger 5 m in order along the conveyance direction of the paper P.
, 6b, a conveyor belt 20, a fixing roller 21, and a paper ejection roller 22 are provided.

This is an ejection tray for ejecting 23ij paper P....

Further, a shutter 24 for opening and closing the optical path K is provided on the optical path reflected by the fourth mirror 14 of the exposure mechanism 8.

Therefore, when copying, first the shutter 24
The surface of the photosensitive drum 2 is uniformly charged by the charging charger 3 while the optical path K is closed, and the LED 4 is turned on to form an electrostatic latent image such as a date and a page on the photosensitive drum 2. When the electrostatic latent image passes through the irradiation point on the photosensitive drum 2 in the optical path due to the rotation of the photosensitive drum 2, the shutter 24 is recessed and the reflected light of the light irradiated onto the document by the lamp 9 is reflected from the first to third points. mirror 10
12, the photosensitive drum 2 is irradiated via the lens 13 and the fourth mirror 14, and an electrostatic latent image of the document is formed.

The electrostatic latent image of this document and the electrostatic latent image of the above-mentioned date and page are opposed to the developing device 5 by the rotation of the photosensitive drum 2, and are developed by supplying developer from the developing device 5. Become.

On the other hand, at this time, the paper feed cassette 16a or 16
Paper P is supplied from b, and after being aligned by the registration rollers 19, it is sent between the photosensitive drum 2 and the transfer peeling chargers 6a and 6b, where the developer image on the photosensitive drum 2 is is transcribed. Thereafter, the paper P is peeled off by the action of the peeling charger 6b and transferred to the conveyor belt 2.
0, the sheet is conveyed to the fixing roller 2, where the image is fixed, and then is discharged to the paper discharge tray 23 via the paper discharge row 221.

〔Effect of the invention〕

As explained above, according to the present invention, desired items can be automatically formed, eliminating the need for manual writing later, which is extremely convenient. It is something to play.

[Brief explanation of the drawing]

The drawing is a schematic diagram showing an image forming apparatus that is an embodiment of the present invention. 2... Photosensitive drum (image carrier), 4... Luminous body (L
EiD).

Claims (3)

[Claims] (1) In an apparatus in which an electrostatic latent image of a document is formed on an image carrier and this electrostatic latent image is developed by a developing device, an electrostatic latent image of a desired item is formed near the image carrier. An image forming apparatus characterized by being provided with a light emitting body. (2) The image forming apparatus according to claim 1, wherein the light emitting body is an LED. (3) The image forming apparatus according to claim 1 or 2, wherein the desired information is a date, a page, etc.