JPS5896549U - Magnification changing device in copying machine - Google Patents
Magnification changing device in copying machineInfo
- Publication number
- JPS5896549U JPS5896549U JP19058381U JP19058381U JPS5896549U JP S5896549 U JPS5896549 U JP S5896549U JP 19058381 U JP19058381 U JP 19058381U JP 19058381 U JP19058381 U JP 19058381U JP S5896549 U JPS5896549 U JP S5896549U
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- magnification
- lens
- eccentric cam
- moving mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims 3
- 108091008695 photoreceptors Proteins 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案に係る倍率変更装置を備えた複写機の概
略正面図、第２図は各倍率におけるレンズ、ミラーの位
置関係を示す説明図、第３図は本考案に係る倍率変更装
置の一実施例を示す平面図、第４図はその斜視図である
。
１・・・感光体ドラム、１０・・・光学系、１４・・・
レンズ、１５・・・ミラー、１６・・・原稿ガラス、３
０・・・ステッピングモータ、３２・・・駆動プーリ、
３５・・・レンズ移動機構、３７・・・駆動ワイヤ、４
０・・・ミラー移動機構、４１・・・移動体、４３・・
・軸、４８・・・コイルばね、５３・・・移動駆動カム
、５５・・・ミラー揺動機構、５７・・・揺動駆動カム
、５８・・・コイルばね、５９・・・ピニオンギヤ、６
０・・・ラック。Fig. 1 is a schematic front view of a copying machine equipped with a magnification changing device according to the present invention, Fig. 2 is an explanatory diagram showing the positional relationship of lenses and mirrors at each magnification, and Fig. 3 is a magnification changing device according to the present invention. FIG. 4 is a plan view showing one embodiment of the present invention, and FIG. 4 is a perspective view thereof. 1... Photosensitive drum, 10... Optical system, 14...
Lens, 15...Mirror, 16...Original glass, 3
0...Stepping motor, 32...Drive pulley,
35... Lens moving mechanism, 37... Drive wire, 4
0... Mirror moving mechanism, 41... Moving body, 43...
- Shaft, 48... Coil spring, 53... Moving drive cam, 55... Mirror rocking mechanism, 57... Rocking drive cam, 58... Coil spring, 59... Pinion gear, 6
0...Rack.
Claims (4)
を倍率変更のために光軸上で移動させるレンズ移動機構
と、前記レンズからの光条を感光体ドラムに向けて反射
させるミラーと、該ミラーを倍率変更に伴う光路長補正
のために移動させるミラー移動機構と、前記ミラーを最
大倍率時に前記レンズからの光束の光軸が感光体ドラム
の中心に向かうように位置決めを行い、この際の光軸が
感光体ドラムに当たる露光点と同一露光点に光軸を向け
るように倍率変更に応じてミラーを揺動させるミラー揺
動機構と、前記レンズ移動機構、ミラー移動機構及びミ
ラー揺動機構を連動的に駆動するためめ駆動伝達機構と
、該駆動伝達機構に連結される駆動源とを備えたことを
特徴とする倍率変更装置。(1) A lens that focuses the light beam from the document surface, a lens movement mechanism that moves the lens on the optical axis to change the magnification, and a mirror that reflects the light streak from the lens toward the photoreceptor drum. , a mirror moving mechanism that moves the mirror for optical path length correction accompanying a change in magnification; and a mirror moving mechanism that positions the mirror so that the optical axis of the light beam from the lens is directed toward the center of the photoreceptor drum at maximum magnification. a mirror swinging mechanism that swings the mirror according to a change in magnification so that the optical axis is directed to the same exposure point as the exposure point where the optical axis hits the photoreceptor drum; the lens moving mechanism, the mirror moving mechanism, and the mirror swinging mechanism; A magnification changing device comprising: a drive transmission mechanism for driving the mechanism in an interlocking manner; and a drive source connected to the drive transmission mechanism.
するとともに一体的に移動可能な移動体を含み、前記ミ
７ 二揺動機構が、前記移動体上にミラーと平行°に支
承された軸と、該軸上に設けられミラー背面に当接する
偏心カムと、該軸上に設けられたピニオンギヤと、該ピ
ニオンギヤと係合すべく本体側に設けられたラックと、
ミラーを前記偏心カムに当接する方向に付勢するスプリ
ングとを含み、前記ミラーが光路長補正のための移動体
の移動に連動する前記ピニオンギヤの回動に応じた偏心
カムの回動によって揺動することを特徴とする実用新案
登録請求の範囲第１項記載の倍率変更装置。(2) The mirror moving mechanism includes a movable body that swingably holds the mirror and is movable integrally with the mirror, and the Mi72 swing mechanism is supported on the movable body parallel to the mirror. an eccentric cam provided on the shaft and in contact with the rear surface of the mirror; a pinion gear provided on the shaft; and a rack provided on the main body side to engage with the pinion gear;
a spring that urges the mirror in a direction to abut the eccentric cam, and the mirror is oscillated by the rotation of the eccentric cam in response to the rotation of the pinion gear that is linked to the movement of the moving body for optical path length correction. A magnification changing device according to claim 1 of the utility model registration claim, characterized in that:
し駆動伝達機構に連結されたいまひとつの偏心カムと、
移動体をこの偏心カムに当接する方向に付勢するいまひ
とつのスプリングと番含むことを特徴とする実用新案登
録請求の範囲第２項記載の倍率変更装置。 ′(3) another eccentric cam in which the mirror moving mechanism contacts a part of the moving body and is connected to a drive transmission mechanism;
3. The magnification changing device according to claim 2, further comprising another spring for biasing the movable body in the direction of contacting the eccentric cam. ′
に行われることを特徴とする実用新案登録請求の範囲第
１項、第２項又は第３項記載め倍 。 率変更装置。(4) The magnification according to claim 1, 2, or 3 of the utility model registration claim, characterized in that the drive for changing the magnification by the drive source is performed continuously. rate change device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19058381U JPS5896549U (en) | 1981-12-21 | 1981-12-21 | Magnification changing device in copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19058381U JPS5896549U (en) | 1981-12-21 | 1981-12-21 | Magnification changing device in copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5896549U true JPS5896549U (en) | 1983-06-30 |
Family
ID=30104130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19058381U Pending JPS5896549U (en) | 1981-12-21 | 1981-12-21 | Magnification changing device in copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5896549U (en) |
-
1981
- 1981-12-21 JP JP19058381U patent/JPS5896549U/en active Pending
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