JPH0219936B2 - - Google Patents
Info
- Publication number
- JPH0219936B2 JPH0219936B2 JP56136737A JP13673781A JPH0219936B2 JP H0219936 B2 JPH0219936 B2 JP H0219936B2 JP 56136737 A JP56136737 A JP 56136737A JP 13673781 A JP13673781 A JP 13673781A JP H0219936 B2 JPH0219936 B2 JP H0219936B2
- Authority
- JP
- Japan
- Prior art keywords
- movable
- movable base
- drive
- slit exposure
- wire
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/54—Lamp housings; Illuminating means
- G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
【発明の詳細な説明】
本発明は電子写真複写機等に用いられるスリツ
ト露光光学装置に関し、特に、その可動台の駆動
制御部の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slit exposure optical device used in an electrophotographic copying machine and the like, and more particularly to an improvement in a drive control section of a movable base thereof.
電子写真複写機等に用いられるスリツト露光光
学装置は、例えば第１図示のような構造に作られ
るとする。即ち、このスリツト露光光学装置は、
装置固定部に敷設される軌道面Ａを有する載置式
案内部材Ｂ，Ｃにより両端部を載置して案内され
る第１、第２可動台Ｄ，Ｅを備えている。第１可
動台Ｄは原稿像を透過できるスリツトＦ及びこの
透過光を反射できる第１ミラーＧを有し、第１ミ
ラーＧの反射光は第２可動台Ｅの第２、第３ミラ
ーＨ，Ｉによつて反射された後、投影レンズＪに
入射される。そして前記第１、第２可動台Ｄ，Ｅ
の両側または一側には、これらの可動台を同期運
動させるワイヤプーリ装置Ｋ，Ｌが設けられ、こ
れらのワイヤプーリ装置Ｋ，Ｌの駆動ドラムＭの
回転運動により第１、第２可動台Ｄ，Ｅが移動さ
れる。 It is assumed that a slit exposure optical device used in an electrophotographic copying machine or the like is made to have a structure as shown in FIG. 1, for example. That is, this slit exposure optical device is
It is provided with first and second movable platforms D and E whose both ends are placed and guided by mounting type guide members B and C having a track surface A laid on the device fixing part. The first movable table D has a slit F that can transmit the document image and a first mirror G that can reflect the transmitted light. After being reflected by I, the light is incident on the projection lens J. and the first and second movable bases D, E
Wire pulley devices K and L are provided on both sides or one side of the movable platforms D and E, and the rotational movement of the drive drum M of these wire pulley devices K and L moves the first and second movable platforms D and E. is moved.
ところで、前述したような光学系の第１、第２
可動台Ｄ，Ｅを案内部材Ｂ，Ｃに載置するような
構造のスリツト露光光学装置では、第１、第２可
動台Ｄ，Ｅにはある程度の重量が必要である。即
ち、第１、第２可動台Ｄ，Ｅをいたずらに軽量化
すると、移動中に第１、第２可動台Ｄ，Ｅが軌道
面Ａから浮上がり画像がみだれる傾向にある。し
かし、第１、第２可動台Ｄ，Ｅの軽量化はスリツ
ト露光光学系の立上り特性の改善及び駆動モータ
の小型化の見地から是非必要なところでもある。 By the way, the first and second optical system as described above
In a slit exposure optical apparatus having a structure in which movable bases D and E are placed on guide members B and C, the first and second movable bases D and E require a certain amount of weight. That is, if the weight of the first and second movable bases D and E is unnecessarily reduced, the first and second movable bases D and E tend to rise from the orbital plane A during movement, resulting in a cluttered image. However, it is absolutely necessary to reduce the weight of the first and second movable tables D and E from the viewpoint of improving the start-up characteristics of the slit exposure optical system and downsizing the drive motor.
本発明は、以上に述べたようなスリツト露光光
学装置の設計上の問題を鑑み、軽量な光学系可動
台であつても、案内部材の軌道面に完全に追従で
きるスリツト露光光学装置を提案するものであつ
て、可動台に掛けられるワイヤの張架方向を軌道
面に対して傾向けることを特徴としている。 In view of the design problems of the slit exposure optical device as described above, the present invention proposes a slit exposure optical device that can completely follow the orbital surface of the guide member even with a lightweight optical system movable table. It is characterized in that the tensioning direction of the wire hung on the movable base is oriented with respect to the raceway surface.
以下、第２図について本発明によるスリツト露
光光学装置の実施例の詳細を説明する。 The details of an embodiment of the slit exposure optical apparatus according to the present invention will be explained below with reference to FIG.
第２図は本発明によるスリツト露光光学装置の
案内部材Ｂ、第１、第２可動台Ｄ，Ｅとワイヤプ
ーリ装置Ｋの関係を示し、ワイヤプーリ装置Ｋ
は、第１、第２可動台Ｄ，Ｅの可動端近くに対向
的に設置される固定プーリ１，２、第２可動台Ｅ
に支持される可動プーリ３、装置固定部に設置さ
れる中継プーリ４、駆動ドラム５を備えており、
駆動ワイヤ６は第２可動台Ｅが第１可動台Ｄの1/
２の速度となるようにこれらのプーリ間に掛渡さ
れている。 FIG. 2 shows the relationship between the guide member B, the first and second movable bases D and E, and the wire pulley device K of the slit exposure optical device according to the present invention.
The fixed pulleys 1 and 2 and the second movable base E are installed oppositely near the movable ends of the first and second movable bases D and E.
It is equipped with a movable pulley 3 supported by a movable pulley 3, a relay pulley 4 installed on a fixed part of the device, and a drive drum 5.
The drive wire 6 is such that the second movable base E is 1/1/1 of the first movable base D.
It is spanned between these pulleys so that the speed is 2.
本発明によれば、前記固定プーリ１，２の設置
位置は第１可動台Ｄのワイヤ取付点ａ及び可動プ
ーリ３のワイヤ巻掛点ｂよりも僅かに下方に寄つ
た位置に選ばれる。したがつて、案内部材Ｂの軌
道面Ａと駆動ワイヤ６の部分６ａとの間には角度
θ1が形成され、また、軌道面Ａと駆動ワイヤ６の
部分６ｂとの間には角度θ2が形成されることにな
る。 According to the present invention, the installation positions of the fixed pulleys 1 and 2 are selected to be slightly lower than the wire attachment point a of the first movable base D and the wire winding point b of the movable pulley 3. Therefore, an angle θ 1 is formed between the raceway surface A of the guide member B and the portion 6a of the drive wire 6, and an angle θ 2 is formed between the raceway surface A and the portion 6b of the drive wire 6. will be formed.
本発明によるスリツト露光光学装置は、以上の
ような構成であるから、案内部材Ｂ，Ｃに沿つた
移動中、第１、第２可動台Ｄ，Ｅには次のような
力が作用することになる。即ち、移動中の駆動ワ
イヤ６の張力をＴとする場合、第１可動台Ｄには
Ttanθ1なる下向きの力が、また、第２可動台Ｅ
にはTtanθ2なる下向きの力が作用される。した
がつて、これらの力により第１、第２可動台Ｄ，
Ｅは案内部材Ｂ，Ｃに常に押付けられるから、軽
量な第１、第２可動台Ｄ，Ｅの場合でも、移動中
に案内部材Ｂ，Ｃから浮動することはなくなる。 Since the slit exposure optical device according to the present invention has the above configuration, the following forces act on the first and second movable bases D and E during movement along the guide members B and C. become. That is, when the tension of the driving wire 6 during movement is T, the first movable base D has a
The downward force of Ttanθ 1 is also applied to the second movable base E
A downward force of Ttanθ 2 is applied to . Therefore, due to these forces, the first and second movable bases D,
Since E is always pressed against the guide members B and C, even if the first and second movable bases D and E are lightweight, they will not float away from the guide members B and C during movement.
よつて、本発明によれば、軽量であつて軌道面
に完全に追従され、良質画像が得られるスリツト
露光光学装置を提供できる。 Therefore, according to the present invention, it is possible to provide a slit exposure optical device that is lightweight, can completely follow the orbital surface, and can provide high-quality images.
第１図は従来のスリツト露光光学装置の説明
図、第２図は本発明によるスリツト露光光学装置
の説明図である。
Ａ…軌道面、Ｂ，Ｃ…案内部材、Ｄ，Ｅ…可動
台、Ｋ…ワイヤプーリ装置、１，２…固定プー
リ、３…可動プーリ、５…駆動ドラム、６…駆動
ワイヤ。
FIG. 1 is an explanatory diagram of a conventional slit exposure optical device, and FIG. 2 is an explanatory diagram of a slit exposure optical device according to the present invention. A... Raceway surface, B, C... Guide member, D, E... Movable base, K... Wire pulley device, 1, 2... Fixed pulley, 3... Movable pulley, 5... Drive drum, 6... Drive wire.
Claims (1)
内部材上に載置された可動台に対して、装置固定
部であつて前記可動台の両側に設けた駆動ドラム
及び駆動ワイヤの方向を変えるプーリを介して前
記可動台の両側にそれぞれ駆動ワイヤを張架して
前記光学部材を往復移動させるように構成すると
共に、前記駆動ワイヤを前記案内部材の軌道面に
対して傾けて、前記可動台を前記軌道面に押付け
る分力を生じさせるように前記駆動ワイヤを張架
してなるスリツト露光光学装置。1. Changing the direction of the drive drum and drive wire, which are device fixing parts and are provided on both sides of the movable base, with respect to the movable base that is provided integrally with the optical member and whose both sides are placed on the guide member. Drive wires are strung on both sides of the movable base via pulleys to reciprocate the optical member, and the drive wires are tilted with respect to the track surface of the guide member to extend the movable base. A slit exposure optical device in which the drive wire is stretched so as to generate a force that presses the drive wire against the raceway surface.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13673781A JPS5837669A (en) | 1981-08-31 | 1981-08-31 | Slit exposure optical device |
| GB08218927A GB2105481B (en) | 1981-07-07 | 1982-06-30 | Line by line photography |
| DE3225103A DE3225103C2 (en) | 1981-07-07 | 1982-07-05 | Illumination device for a copier with strip scanning |
| US06/719,631 US4634261A (en) | 1981-07-07 | 1985-04-04 | Optical system for reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13673781A JPS5837669A (en) | 1981-08-31 | 1981-08-31 | Slit exposure optical device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5837669A JPS5837669A (en) | 1983-03-04 |
| JPH0219936B2 true JPH0219936B2 (en) | 1990-05-07 |
Family
ID=15182322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13673781A Granted JPS5837669A (en) | 1981-07-07 | 1981-08-31 | Slit exposure optical device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5837669A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5895762A (en) * | 1981-12-02 | 1983-06-07 | Minolta Camera Co Ltd | Scanning optical system driving mechanism in copying machine or the like |
| JPS60129421A (en) * | 1983-12-16 | 1985-07-10 | Fuji Xerox Co Ltd | Direct drive guide device |
| JPS6330073U (en) * | 1986-08-09 | 1988-02-27 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5446341U (en) * | 1977-09-06 | 1979-03-30 | ||
| JPS5646154A (en) * | 1979-09-21 | 1981-04-27 | Ricoh Co Ltd | Carriage driving mechanism |
-
1981
- 1981-08-31 JP JP13673781A patent/JPS5837669A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5837669A (en) | 1983-03-04 |
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