JPS6440846U

JPS6440846U -

Info

Publication number: JPS6440846U
Application number: JP11760988U
Authority: JP
Priority date: 1988-09-06
Filing date: 1988-09-06
Publication date: 1989-03-10

Description

[Brief explanation of drawings]

第１，２図は本考案の一実施例をなす装置を示
したものであつて、第１図は第２図のＢ−Ｂ線で
切断して示した断面図、第２図は第１図のＡ−Ａ
線で切断して示した断面図、第３図は本考案の他
の実施例を示す装置の断面図、第４図ａ，ｂは露
光走査系の速度変動に関する従来装置と本考案装
置との比較図、第５図は一般的な複写機の構成図
、第６図はその駆動系統の説明図、第７図は潜像
形成部材の速度変動に伴う画像ブレ現象を説明し
た図、第８図はモータの回転数とトルクの関係を
示した図、第９図はチエーンとスプロケツトホイ
ール間で生じる速度変動を説明した図である。１１……感光体ドラム駆動用ホイール、１２…
…リングギヤ、２１……露光走査系駆動用スプロ
ケツトホイール、２６……デイスク、２６ａ……
駆動力伝達ピン、２７……駆動プーリ、２７ａ…
…被動ピン、２８……緩衝板、３１……現像スリ
ーブ駆動用ホイール、４１……クリーニングユニ
ツト駆動用ホイール、５１……給紙ローラ駆動用
ホイール、６１……レジストローラ駆動用ホイー
ル、８１……定着ユニツト駆動用ホイール、９０
……被動ギヤ、Ｍ……メインモータ。 Figures 1 and 2 show a device constituting an embodiment of the present invention, in which Figure 1 is a sectional view taken along line B-B in Figure 2; A-A in the diagram
3 is a sectional view of a device showing another embodiment of the present invention, and FIGS. 4a and 4b are diagrams showing the difference between the conventional device and the device of the present invention regarding speed fluctuations of the exposure scanning system. Comparison diagram: FIG. 5 is a configuration diagram of a general copying machine, FIG. 6 is an explanatory diagram of its drive system, FIG. 7 is a diagram illustrating the image blur phenomenon due to speed fluctuations of the latent image forming member, and FIG. The figure shows the relationship between the rotational speed and torque of the motor, and FIG. 9 is a diagram explaining speed fluctuations occurring between the chain and sprocket wheel. 11... Photosensitive drum driving wheel, 12...
...Ring gear, 21... Exposure scanning system drive sprocket wheel, 26... Disc, 26a...
Drive force transmission pin, 27... Drive pulley, 27a...
... Driven pin, 28 ... Buffer plate, 31 ... Wheel for driving the developing sleeve, 41 ... Wheel for driving the cleaning unit, 51 ... Wheel for driving the paper feed roller, 61 ... Wheel for driving the registration roller, 81 ... Fixing unit drive wheel, 90
...Driven gear, M...Main motor.

Claims

[Scope of utility model registration request]

In a copying machine of the type in which at least some of the movable units involved in the copying process are driven by a common drive motor, at least one output shaft of the drive system driven by the drive motor via a drive force transmission mechanism, A disk integrated with the output shaft and a drive wheel rotatable with respect to the output shaft are attached with a buffer plate made of an elastic material sandwiched therebetween, and a plurality of pins are implanted on each opposing surface of the disk and the drive wheel. are passed through the buffer plate at alternating intervals and fitted into elongated holes extending in the circumferential direction recessed in the opposing surface of the other party, thereby connecting the disk and the driving wheel via the buffer plate. A buffer device for a copying machine, characterized in that: