JPH0396673U

JPH0396673U -

Info

Publication number: JPH0396673U
Application number: JP425490U
Authority: JP
Priority date: 1990-01-19
Filing date: 1990-01-19
Publication date: 1991-10-03

Description

[Brief explanation of drawings]

第１図は本考案が適用されるレーザプリンタの
一例を示す概略的全体構成図、第２図は同上レー
ザープリンタの画像形成部の概略的要部構成図、
第３図は同上レーザープリンタの制御回路の一例
を示すブロツク図、第４図はフオトセンサのタイ
ミング制御の説明図、第５図、第６図はフオトセ
ンサの配置位置の説明図である。１……画像形成部、２……感光体、３……現像
装置、４……転写装置、５……クリーニング装置
、６……定着装置、１５……除電装置、１６……
反射式フオトセンサ、１６ａ……発光部、１６ｂ
……受光部。 FIG. 1 is a schematic overall configuration diagram showing an example of a laser printer to which the present invention is applied, and FIG. 2 is a schematic diagram of the main part configuration of an image forming section of the same laser printer.
FIG. 3 is a block diagram showing an example of the control circuit of the laser printer, FIG. 4 is an explanatory diagram of timing control of the photo sensor, and FIGS. 5 and 6 are explanatory diagrams of the arrangement position of the photo sensor. DESCRIPTION OF SYMBOLS 1... Image forming section, 2... Photoreceptor, 3... Developing device, 4... Transfer device, 5... Cleaning device, 6... Fixing device, 15... Static eliminator, 16...
Reflective photo sensor, 16a... Light emitting part, 16b
……Light receiving section.

Claims

[Claims for Utility Model Registration] 1. A photoconductor, a charging device that uniformly charges the surface of the photoconductor, and an electrostatic latent image formed by exposing the charged photoconductor to light corresponding to a document image or an image signal. an optical writing device that forms a toner image, a developing device that develops an electrostatic latent image formed on a photoreceptor to form a toner image, and a transfer device that transfers the toner image formed on the photoreceptor to a transfer member. , a fixing device that fixes the toner image transferred onto the transfer member, a cleaning device that removes residual toner on the photoreceptor after transfer, and a static eliminator that removes static electricity from the surface of the photoreceptor after cleaning; In an image forming apparatus that is detachable from the body, a reflective photo sensor is provided to detect whether or not the photoreceptor is attached using reflected light from the photoreceptor, and the photo sensor is used to detect a side surface of the photoreceptor. An image forming apparatus characterized by being arranged as follows. 2. a photoconductor, a charging device that uniformly charges the surface of the photoconductor, and an optical writing device that exposes the charged photoconductor to light corresponding to a document image or an image signal to form an electrostatic latent image; A developing device that develops the electrostatic latent image formed on the photoreceptor to form a toner image, a transfer device that transfers the toner image formed on the photoreceptor to a transfer member, and a toner image that is transferred onto the transfer member. An image forming apparatus including a fixing device that fixes a toner image, a cleaning device that removes residual toner on a photoreceptor after transfer, and a static eliminator that removes static electricity from the surface of the photoreceptor after cleaning, and the photoreceptor is removable. A reflective photo sensor is provided for detecting whether or not the photoreceptor is mounted using reflected light from the photoreceptor, and this photo sensor is disposed on the end side of the photoreceptor, and the light receiving part side is connected to the light emitting part. An image forming apparatus characterized in that the image forming apparatus is arranged so as to be closer to the end of the photoreceptor than the other side.