JPH0289451U - - Google Patents
Info
- Publication number
- JPH0289451U JPH0289451U JP16936788U JP16936788U JPH0289451U JP H0289451 U JPH0289451 U JP H0289451U JP 16936788 U JP16936788 U JP 16936788U JP 16936788 U JP16936788 U JP 16936788U JP H0289451 U JPH0289451 U JP H0289451U
- Authority
- JP
- Japan
- Prior art keywords
- movable
- traveling
- mirror
- lens
- base
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Description
第１図ａは本考案の倍率変換機構及びピント調
節機構の１実施例の平面図。第１図ｂは本考案の
１実施例の駆動系統要部を示す斜視図。第２図は
本考案の１実施例の画像形成装置の光学系関連部
分を示す概略図。第３図は一般の光路長変化方式
変倍機構をもつた画像形成装置の概略図。第４図
は従来の倍率変換機構の概要図。第５図は従来の
露光走査を作動させるワイヤの巻回状態を示す斜
視図。第６図はターンバツクル機構とその調整治
具の斜視図。
１……本体フレーム、２……光源ランプ、３…
…スリツト、４，５，６，８……ミラー、７……
投影レンズ、９……感光体、１０……走行駆動モ
ータ、１１，１３，１４ａ，１５，１６ａ，１８
，２１，２２ａ，２３……プーリ、１２，１４，
２２，２５，２６，４７……プーリ、４０……レ
ンズ移動台、４２……ラツク、４３……スライド
カム、４４……支軸、４５……フオロワ部材、４
６……フオロワローラ、４７，１７８，１７９…
…プーリ、４８，１７７……フツク、５８……ス
テツピングモータ、６０……ターンバツクル、６
１……右雄ねじ部、６１Ｂ，６２Ｂ……ガイド部
、６２……左雄ねじ部、６３……ターンバツクル
ねじ、６３Ｃ……ハンドルデイスク、６７……治
具、６７Ｃ……底面、７０……移動滑車台、８５
……カム、８６……カムフオロワ、１７０……変
倍プレート、１７１……基台プレート、１７１Ａ
，１７１Ｄ……壁、１７１Ｂ……ガイド壁、１７
１Ｃ……補助プレート、１７１Ｆ，１８６……調
整ねじ、１７２，１７３……ばねかけフツク、１
７４，１７４ａ……スプリング、１７５……ガイ
ド溝、１７６……ガイド部材、Ａ……第１走行台
、Ｂ……第２走行台、Ｗ１，Ｗ２，Ｗ３……ワイ
ヤ。
FIG. 1a is a plan view of one embodiment of the magnification conversion mechanism and focus adjustment mechanism of the present invention. FIG. 1b is a perspective view showing the main parts of a drive system according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing optical system related parts of an image forming apparatus according to an embodiment of the present invention. FIG. 3 is a schematic diagram of an image forming apparatus having a general optical path length changing magnification mechanism. FIG. 4 is a schematic diagram of a conventional magnification conversion mechanism. FIG. 5 is a perspective view showing a winding state of a wire for operating conventional exposure scanning. FIG. 6 is a perspective view of the turnbuckle mechanism and its adjustment jig. 1...Body frame, 2...Light source lamp, 3...
...Slit, 4, 5, 6, 8...Mirror, 7...
Projection lens, 9... Photoreceptor, 10... Travel drive motor, 11, 13, 14a, 15, 16a, 18
, 21, 22a, 23...Pulley, 12, 14,
22, 25, 26, 47... Pulley, 40... Lens moving table, 42... Rack, 43... Slide cam, 44... Support shaft, 45... Follower member, 4
6... Follower roller, 47,178,179...
...Pulley, 48,177...Hook, 58...Stepping motor, 60...Turnbuckle, 6
1...Right male thread part, 61B, 62B...Guide part, 62...Left male thread part, 63...Turnbuckle screw, 63C...Handle disk, 67...Jig, 67C...Bottom surface, 70...Moving pulley stand, 85
...Cam, 86...Cam follower, 170...Magnification variable plate, 171...Base plate, 171A
, 171D...Wall, 171B...Guide wall, 17
1C... Auxiliary plate, 171F, 186... Adjustment screw, 172, 173... Spring hook, 1
74, 174a...Spring, 175...Guide groove, 176...Guide member, A...First traveling base, B...Second traveling base, W1 , W2 , W3 ...Wire.
Claims (1)
第１走行台と、前記第１走行台の１／２の速度で
同方向に移動し、前記第１走行台からの反射光を
再度反射するためのミラーを設けた第２走行台と
、前記原稿画面を前記ミラーを介し像担持体に投
影するレンズとからなる光学系において、前記第
１、第２の走行台の駆動ワイヤの両端部を固定し
、前記走行台の走行方向に移動可能にした変倍プ
レーと、該方向に移動可能にしかつスライドカム
を装着したレンズ移動台と、該移動台を移動させ
る駆動手段と、該スライドカムで揺動するフオロ
ワ部材と、該部材上に設けられたプーリを介して
前記変倍プレート及び前記光学系の本体フレーム
に両端を固定してかけられたワイヤと該ワイヤの
中継部材として設けたターンバツクル機構とを有
することを特徴とする倍率変換機構及びピント調
節機構を有する画像形成装置。 a first traveling table provided with a lamp and a mirror for scanning the original screen; and a first traveling table that moves in the same direction at half the speed of the first traveling table and for reflecting the reflected light from the first traveling table again. In an optical system consisting of a second carriage provided with a mirror and a lens that projects the document screen onto an image carrier via the mirror, both ends of drive wires of the first and second carriages are fixed. , a variable magnification play that is movable in the traveling direction of the traveling base, a lens moving base that is movable in the direction and equipped with a slide cam, a driving means for moving the moving base, and a lens movable base that is movable by the slide cam. a follower member, a wire fixed at both ends to the variable power plate and the main body frame of the optical system via a pulley provided on the member, and a turnbuckle mechanism provided as a relay member for the wire. An image forming apparatus having a magnification conversion mechanism and a focus adjustment mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16936788U JPH0542428Y2 (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16936788U JPH0542428Y2 (en) | 1988-12-28 | 1988-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0289451U true JPH0289451U (en) | 1990-07-16 |
| JPH0542428Y2 JPH0542428Y2 (en) | 1993-10-26 |
Family
ID=31459360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16936788U Expired - Lifetime JPH0542428Y2 (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0542428Y2 (en) |
-
1988
- 1988-12-28 JP JP16936788U patent/JPH0542428Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0542428Y2 (en) | 1993-10-26 |
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