JPS6160251U

JPS6160251U -

Info

Publication number: JPS6160251U
Application number: JP14294084U
Authority: JP
Priority date: 1984-09-22
Filing date: 1984-09-22
Publication date: 1986-04-23

Description

[Brief explanation of the drawing]

第１図は本考案に係る複写機の複写倍率変倍装
置のクレーム対応図、第２図は本考案の一実施例
を図示した側面図で、第３図はその要部拡大斜視
図、第４図はさらにその要部拡大斜視図、第５図
は同実施例のカム形状とカムフオロワーアームの
揺動状態を図示した説明図、第６図は同実施例の
動作を図解した説明図、第７図は同実施例の第４
ミラーの移動に連動して同ミラーを傾動させるた
めのミラーカムの形状とミラーカムフオロワーア
ームの揺動状態を図示した説明図である。１…スリツト露光ミラー移動型乾式電子写真複
写機、２…ケーシング、３…プラテンガラス、４
…プラテンカバー、５…露光ランプ、６…第１ミ
ラー、７…第２ミラー、８…第３ミラー、９…第
４ミラー、１０…レンズ、１１…原稿、１２…ド
ラム状感光体、１３…露光域、１４…帯電器、１
５…現像器、１６…転写器、１７…剥離器、１８
…クリーニング器、１９…用紙トレイ、２０…用
紙、２１…給紙装置、２２…定着器、２３…レン
ズマウント、２４，２５…プーリ、２６…ドライ
ブプーリ、２７…無端ケーブル、２８…ステツプ
モータ、２９…巻付けプーリ、３０…カムフオロ
ワーアーム、３１…第１アイドラプーリ、３２…
第２アイドラプーリ、３３…ワイヤ、３４…ミラ
ーマウント、３５…カム、３６…引張コイルスプ
リング、３７…ミラーカムフオロワーアーム、３
８…調整螺子、３９…カムフオロワーロール、４
０…ミラーカム、４１…枢軸。 Fig. 1 is a view corresponding to claims of a copying magnification variable device for a copying machine according to the present invention, Fig. 2 is a side view illustrating an embodiment of the present invention, and Fig. 3 is an enlarged perspective view of the main parts thereof. 4 is an enlarged perspective view of the main part, FIG. 5 is an explanatory diagram illustrating the cam shape and the swinging state of the cam follower arm of the same embodiment, and FIG. 6 is an explanatory diagram illustrating the operation of the same embodiment. Figure 7 shows the fourth example of the same example.
FIG. 2 is an explanatory diagram illustrating the shape of a mirror cam and the swinging state of a mirror cam follower arm for tilting the mirror in conjunction with the movement of the mirror. 1... Slit exposure mirror moving type dry electrophotographic copying machine, 2... Casing, 3... Platen glass, 4
...Platen cover, 5...Exposure lamp, 6...First mirror, 7...Second mirror, 8...Third mirror, 9...Fourth mirror, 10...Lens, 11...Original, 12...Drum-shaped photoreceptor, 13... Exposure area, 14... Charger, 1
5...Developer, 16...Transfer device, 17...Peeler, 18
... cleaning device, 19 ... paper tray, 20 ... paper, 21 ... paper feeder, 22 ... fixing device, 23 ... lens mount, 24, 25 ... pulley, 26 ... drive pulley, 27 ... endless cable, 28 ... step motor, 29... Wrap pulley, 30... Cam follower arm, 31... First idler pulley, 32...
2nd idler pulley, 33... wire, 34... mirror mount, 35... cam, 36... tension coil spring, 37... mirror cam follower arm, 3
8...adjustment screw, 39...cam follower roll, 4
0...mirror cam, 41...axis.

Claims

[Scope of utility model registration request]

In a variable magnification copying machine that performs copying by changing the total optical path length from the document surface to the exposed surface of a drum-shaped photoreceptor in accordance with the copying magnification without changing the focal length of the lens, there is a distance between the lens and the exposed surface of the photoreceptor. is 1
A cam follower or a cam is provided on the mirror, and a cam or cam follower is provided on a fixed portion of the copying machine, and a contact portion of the cam follower is formed to be movably adjustable with respect to the cam. The cam is attached to be swing-adjustable, and the cam has a shape that swings the mirror in a direction that directs light that has passed through the lens from the document surface to the center of the drum-shaped photoreceptor, regardless of changes in the position of the mirror. A copying magnification changing device for a copying machine, characterized in that it is formed in a.