JPH03144589A - Optical recording device - Google Patents

Abstract

PURPOSE:To provide an inexpensive exposing part with simple constitution by arranging an incident end in a circumferential direction on one end face of a photosensitive drum and constituting a device of an optical fiber array whose projecting and is formed between the incident end and the other end. CONSTITUTION:Light is made to irradiate being on/off controlled based on a printing signal from a light emitting element 56 which is arranged on the focusing base end of respective optical fibers of the optical fiber array 51 arrayed in the circumferential direction of the end face of the photosensitive drum 1, and transferred in the optical fiber to be projected from the projecting and formed on the way of the optical fiber. Then, a photosensitive layer 13 provided on the photosensitive drum is exposed from the inside of the photosensitive drum 1 to form an electrostatic latent image. A potential in the exposed part, that means, the part of the electrostatic latent image, is lowered and toner 23 is stuck to that part. Thereafter, a toner image on the photosensitive body is transferred and recorded on a recording paper by a transfer roller. Thus, the cost of the exposing part is reduced because an LED array head is not used but the optical fiber array is used.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical recording device having an exposure light source and a photoconductive layer.

[Conventional technology]

Conventionally, an optical recording device as shown in FIG. 5 has been proposed. The optical recording device has a rotating drum-type photoreceptor 1.01 in which a transparent electrode 1 and a photoconductive layer 113 are formed on a transparent support 111. An LED array head 105 of light emitting elements to be exposed is arranged, and a magnetic roller 121 is disposed outside the photoreceptor 101. A non-magnetic conductive sleeve 122 and a conductive magnetic toner 12 are disposed outside the magnetic roller 121.
Three developing devices 102 are arranged.

A transfer roller 1 - 03 is arranged below the photosensitive drum 101 to transfer conductive magnetic toner 123 onto recording paper 131 .

A developing bias Vs is applied between the sleeve 122 and the photoreceptor 101, and the sleeve 122 and the photoreceptor 101 are connected via a magnetic brush 104 formed on the sleeve 122 by conductive magnetic toner 123. are in contact with each other. The potential of the conductive toner 123 in the magnetic brush 104 is the same as the developing bias Vs at any part thereof. By rubbing the magnetic brush 104 and the photoconductive layer 113, electrical contact is improved, charge is injected, and the photoreceptor 101
is charged. When the photoreceptor 101 is charged to approximately the same potential as the magnetic brush 104, no electrical attraction is generated between the magnetic brush 104 and the photoreceptor 101, so the magnetic brush 104 does not adhere to the surface of the photoreceptor. .

In this state, when the LED array head 5 irradiates the photoreceptor 1 with light according to the image signal and exposes it, the potential of the exposed area drops, and toner 1 is applied to that area using the principle of reversal development.
23 is attached. After adhesion, the photoreceptor 101 and the magnetic brush 1
04 quickly leaves, the developed toner image remains as it is on the photoreceptors 1 and 01.

In this manner, the toner image on the photoreceptor after cleaning, charging, exposure, and development is transferred and recorded onto the recording paper 3 by the transfer roller.

[Problems to be Solved by the Invention] However, according to the above-mentioned conventional technology, the LED array head 105 as a light emitting element has a low yield in manufacturing the LED array, and also requires trimming for each LED, so it is very difficult to use. This increases the cost, and as a result, the cost of the optical recording apparatus as a whole increases.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide an optical recording device having a simple structure and inexpensive exposure section by configuring the light emitting elements with an optical fiber array. It's about doing.

[Means to solve the problem]

In order to achieve this object, the optical recording device of the present invention includes a light-transmissive photoreceptor drum, a toner developer provided on the outer peripheral surface of the photoreceptor drum, and a toner developer provided on the surface of the photoreceptor drum. A toner image transfer device that transfers the applied toner image onto a recording paper; and the other end to form a shape.
The optical fiber array has an output end formed between an input end and the other end, and a light emitting element that is controlled to be turned on and off based on a print signal at the input end of the optical fiber array.

[Effect]

According to the optical recording device of the present invention having the above configuration, the light emitting element is turned on based on the print signal from the light emitting element disposed at the convergence base end of each optical fiber of the optical fiber array arranged in the circumferential direction of the end surface of the photosensitive drum. Light is irradiated with off control. Light based on the print signal is transmitted through the optical fiber and exits from the exit end provided midway through the optical fiber. Thereby, the photoconductive layer provided on the photoreceptor drum is exposed from the inside of the photoreceptor drum to form an electrostatic latent image. As a result, the potential of the exposed area, that is, the electrostatic latent image area, decreases and toner adheres to that area. Thereafter, the toner image on the photoreceptor is transferred and recorded onto recording paper by a transfer aperture. Thereby, L.E.
By using an optical fiber array without using a D-array head, the cost of the exposure section can be reduced.

〔Example〕

An embodiment embodying the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of the optical recording device of the present invention.

The optical recording device comprises a rotating drum type photoreceptor 1 having a transparent support 11 on which a transparent electrode 1.2 and a photoconductive layer 1-3 are formed. A developing device 2 having a magnetic roller 22 is disposed outside the photoreceptor 1, and is composed of a non-magnetic conductive sleeve 21 and a conductive magnetic toner 23 outside the magnetic roller 22. Below the photosensitive drum 1 is a conductive magnetic toner 23.
A transfer roller is arranged to transfer the image onto the recording paper 31.

There is a developing bias V between the sleeve 21 and the photoreceptor 1.
s is applied, and the relationship between the sleeve 21 and the photoreceptor is
Contact is made via a magnetic brush 4 formed on the sleeve 21 by the toner 23.

The exposure section 51 is constructed as shown in FIG. The outer periphery of the exposure section 51 is made up of a cylindrical optical fiber array 51 arranged along the circumference of the transparent support 11 of the photoreceptor 1 . A rotating crank optical fiber 55 is disposed at an input end disposed on one end face of the cylindrical fiber array 51, and light that is ON-OFF controlled according to a print signal from a light emitting element 56 is incident on the crank optical fiber 55. It has become.

Next, the cylindrical optical fiber array 51 will be explained using FIG. The cylindrical optical fiber array 51 is formed by processing a plurality of optical fibers into a cylindrical shape. (Figure 3(a)).

Next, as shown in FIG. 3(b), after rotating one end 3,600 times, the central part is also fixed to the adhesive end, etc., and each optical fiber is scratched horizontally and linearly with a size determined from the exposure size, and the cladding 52 is Remove as shown. (Figure 3 (C)). In this way, the cylindrical optical fiber array 51 is formed such that the incident end is disposed in the circumferential direction of one of the opposing end surfaces of the photoreceptor drum 1, and the space between the incident end and the other end is twisted. has been done.

Next, the operation of the optical recording apparatus according to the present invention will be explained.

First, the light emitting element 5 blinks in response to a printing signal from the outside.
6 is sent into the cylindrical fiber array 51 from the circular end 57 of the cylindrical fiber array 51 in synchronization with the rotation of the photoreceptor drum from the crank optical fiber 55 rotating at high speed, and propagates therein. . Then, the light is emitted from the removed cladding 52 of the cylindrical optical fiber array 51 that is arranged almost inscribed with the photoreceptor drum 1.
The charged photoreceptor 1 is exposed to light from the transparent support 11 side.

The optical fiber from which the cladding 52 has been removed emits light as shown in FIG. The light emitted from the cylindrical optical fiber array 51 in FIGS. 1 and 4 is indicated by an arrow 53. Cylindrical optical fiber array 51 configured in this way
When light is sequentially irradiated along the circumference from one end 57, the emitted light 53 moves linearly along the removed cladding 52, converting circular scanning to linear scanning, as shown in FIG. Toner 2 is applied to the exposed area by the method described above.
3 adheres to form a toner image, and then the toner image is transferred and recorded onto the recording paper 31 by the transfer roller 3.

The residual toner on the photoreceptor 1 after the transfer is removed, the photoreceptor returns to its initial state, and the series of operations ends.

Note that a rod lens array may be inserted between the transparent support 11 and the cylindrical optical fiber array 51, if necessary.

〔Effect of the invention〕

As is clear from the detailed description above, it is possible to obtain an optical recording device having an exposure section with a simple configuration, high reliability, and low cost.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the optical recording device of the present invention, FIG. 2 is a vertical cross-sectional view of the optical recording device of the present invention, and FIGS. 3(a), (b),
(c) is an explanatory diagram showing a method of manufacturing an optical recording device, FIG. 4 is an explanatory diagram showing propagation of light in an optical fiber, and FIG. 5 is a cross-sectional view of a conventional optical recording device. 1... Photosensitive drum 2... Developing device 5... LED array head 11... Transparent support 13... Photoconductive layer 51... Cylindrical fiber array 56... Light emitting element

Claims (1)

[Claims] A light-transmissive photoreceptor drum, a toner developer provided on the outer peripheral surface of the photoreceptor drum, and a toner image transfer device that transfers the toner image applied to the photoreceptor drum surface by the toner developer onto recording paper. and an input end is disposed inside the photoreceptor drum in the circumferential direction of one of the opposing end surfaces of the photoreceptor drum, and the input end and the other end are twisted to form a
An optical recording device comprising: an optical fiber array having an output end formed between an input end and the other end; and a light emitting element at the input end of the optical fiber array, which is controlled to be turned on and off based on a print signal.