JPS6449946U - - Google Patents
Info
- Publication number
- JPS6449946U JPS6449946U JP14377087U JP14377087U JPS6449946U JP S6449946 U JPS6449946 U JP S6449946U JP 14377087 U JP14377087 U JP 14377087U JP 14377087 U JP14377087 U JP 14377087U JP S6449946 U JPS6449946 U JP S6449946U
- Authority
- JP
- Japan
- Prior art keywords
- magnification
- drive mechanism
- variable
- stepping motor
- change
- 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
- 238000010586 diagram Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図は本考案が適用される露光光学系の概略
図、第２図は倍率ｍと共役長Ｌとの関係を示すグ
ラフ、第３図は本考案が適用される変倍駆動機構
の一例を示す平面図、第４図は第３図におけるミ
ラーシフトカムの近傍の斜視図、第５図は第３図
における第２スキヤナとカムブラケツトとの関連
を示す概略図、第６図は第３図におけるミラーシ
フトカムの外形を示す平面図、第７図は本考案に
用いられるステツピングモータの周波数―トルク
特性曲線図、第８図は本考案のレンズ駆動制御の
ブロツク図である。
７……結像レンズ、１０……第１スキヤナ、１
１……第２スキヤナ、１３……ステツピングモー
タ、１９……変倍カムプーリ、２０……ミラーシ
フトカム、３２……カムブラケツト、３３……カ
ムフオロア、３４……ミラーシフトワイヤ、３６
……スプリング。
Fig. 1 is a schematic diagram of an exposure optical system to which the present invention is applied, Fig. 2 is a graph showing the relationship between magnification m and conjugate length L, and Fig. 3 is an example of a variable magnification drive mechanism to which the present invention is applied. 4 is a perspective view of the vicinity of the mirror shift cam in FIG. 3, FIG. 5 is a schematic diagram showing the relationship between the second scanner and the cam bracket in FIG. 3, and FIG. 6 is a diagram showing the relationship between the second scanner and the cam bracket in FIG. FIG. 7 is a frequency-torque characteristic curve diagram of the stepping motor used in the present invention, and FIG. 8 is a block diagram of lens drive control according to the present invention. 7... Imaging lens, 10... First scanner, 1
DESCRIPTION OF SYMBOLS 1...Second scanner, 13...Stepping motor, 19...Magnification variable cam pulley, 20...Mirror shift cam, 32...Cam bracket, 33...Cam follower, 34...Mirror shift wire, 36
……spring.
Claims (1)
変倍駆動機構を設け、該変倍駆動機構を駆動する
手段としてステツピングモータを備え、変倍駆動
機構の負荷に応じてステツピングモータの駆動周
波数を切換える手段を設け、変倍駆動機構の移動
速度を変化させることを特徴とする複写機のズー
ム変倍装置。 A variable magnification drive mechanism is provided to change the magnification by moving the position of the lens/mirror, and a stepping motor is provided as a means for driving the variable magnification drive mechanism, and the stepping motor is driven according to the load of the variable magnification drive mechanism. 1. A zoom magnification device for a copying machine, characterized in that a means for switching a frequency is provided to change the moving speed of a magnification variable drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14377087U JPS6449946U (en) | 1987-09-22 | 1987-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14377087U JPS6449946U (en) | 1987-09-22 | 1987-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6449946U true JPS6449946U (en) | 1989-03-28 |
Family
ID=31410890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14377087U Pending JPS6449946U (en) | 1987-09-22 | 1987-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6449946U (en) |
-
1987
- 1987-09-22 JP JP14377087U patent/JPS6449946U/ja active Pending
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