JPH0285440U

JPH0285440U -

Info

Publication number: JPH0285440U
Application number: JP16590688U
Authority: JP
Priority date: 1988-12-22
Filing date: 1988-12-22
Publication date: 1990-07-04

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案に係る電子写真装
置の感光ドラム破損防止機構の実施例を示すもの
であり、第１図は電子写真装置の一例としてのペ
ージプリンタの概略断面図、第２図は第１図のレ
バーおよびストツパを示す拡大斜視図、第３図お
よび第４図は感光ドラム破損防止機構のそれぞれ
異なる作用を示す正面図、第５図ないし第９図は
従来のページプリンタを示すものであり、第５図
は概略断面図、第６図は斜視図、第７図は正面開
口から現像ユニツトを抜き出している状態を示す
斜視図、第８図は上部開口を介してドラムカート
リツジを装着している状態を示す斜視図、第９図
はドラムカートリツジの斜視図である。１……ハウジング、８……上蓋、９……上部開
口、１０……横扉、１１……正面開口、１３……
感光ドラム、１４……支軸、１５……ドラムカー
トリツジ、１６……軸受、１７……現像ユニツト
、３２……レバー、３２Ａ，３２Ｂ……アーム、
３３……支軸、３４……ピン、３５……支軸、３
６Ａ……係合片、３６Ｂ……邪魔板、３７……ス
トツパ。 1 to 4 show an embodiment of a photosensitive drum damage prevention mechanism for an electrophotographic apparatus according to the present invention, and FIG. 1 is a schematic sectional view of a page printer as an example of an electrophotographic apparatus, and FIG. The figure is an enlarged perspective view showing the lever and stopper in Figure 1, Figures 3 and 4 are front views showing the different functions of the photosensitive drum damage prevention mechanism, and Figures 5 to 9 are views of a conventional page printer. Fig. 5 is a schematic sectional view, Fig. 6 is a perspective view, Fig. 7 is a perspective view showing the developing unit being pulled out from the front opening, and Fig. 8 is a drum car through the upper opening. FIG. 9 is a perspective view of the drum cartridge. 1...Housing, 8...Top lid, 9...Top opening, 10...Side door, 11...Front opening, 13...
Photosensitive drum, 14... Support shaft, 15... Drum cartridge, 16... Bearing, 17... Developing unit, 32... Lever, 32A, 32B... Arm,
33... Support shaft, 34... Pin, 35... Support shaft, 3
6A...Engagement piece, 36B...Baffle plate, 37...Stopper.

Claims

[Scope of utility model registration request]

forming an upper opening at the top of the housing and forming side openings at the side of the housing;
A drum cartridge comprising a photosensitive drum rotatably supported in a frame around a support shaft is removably attached to a bearing member formed in the housing through the upper opening, and In the electrophotographic apparatus, the developing unit for forming a toner image on the surface is removably attached to the outer circumference of the photosensitive drum in the housing through the side opening, and the drum cartridge is disposed in the housing. a lever formed to be rotated when the supporting shaft of the lever is engaged with the lever; A mechanism for preventing damage to a photosensitive drum of an electrophotographic device, characterized in that it is provided with a stopper for restraining attachment/detachment.