JPH08114861A - Light shielding device of copying machine - Google Patents
Light shielding device of copying machineInfo
- Publication number
- JPH08114861A JPH08114861A JP6248092A JP24809294A JPH08114861A JP H08114861 A JPH08114861 A JP H08114861A JP 6248092 A JP6248092 A JP 6248092A JP 24809294 A JP24809294 A JP 24809294A JP H08114861 A JPH08114861 A JP H08114861A
- Authority
- JP
- Japan
- Prior art keywords
- light
- copying machine
- shielding member
- light shielding
- carriage
- 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
Landscapes
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複写する倍率の大きさ
を調節する際に光学系のレンズが移動する複写機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine in which a lens of an optical system moves when adjusting a magnification of copying.
【０００２】[0002]
【従来の技術】図８は従来の複写機の概要を示すもの
で、複写機１のハウジング２の内部には、キャリッジ４
に支持された光学レンズ系３が装備される。原稿を読み
とった画像光Ｒは、レンズ系３を通って記録紙５側に投
写される。記録紙５側は、例えば感光体ドラムであっ
て、トナー像を担持し、記録紙に転写する。この種の複
写機にあっては、光学系レンズ３を支持するキャリッジ
４を軸Ｘ1−Ｘ2方向に移動させることによって、複写の
倍率を変更することができる。2. Description of the Related Art FIG. 8 shows an outline of a conventional copying machine. A carriage 4 is provided inside a housing 2 of the copying machine 1.
The optical lens system 3 supported by is equipped. The image light R that has read the document passes through the lens system 3 and is projected onto the recording paper 5 side. The recording paper 5 side is, for example, a photoconductor drum, which carries a toner image and transfers it to the recording paper. In this type of copying machine, the magnification of copying can be changed by moving the carriage 4 supporting the optical system lens 3 in the direction of the axis X 1 -X 2 .
【０００３】[0003]
【発明が解決しようとする課題】この型式の複写機にあ
っては、キャリッジの軸Ｘ1−Ｘ2上の位置を検出する必
要があるとともに、画像光Ｒを遮光する遮光装置６もキ
ャリッジ４の移動に追従する機構とする必要がある。複
写倍率に応じて移動するレンズ部の遮光装置にあって
は、倍率の変動範囲が大きくなるとレンズの移動距離が
大きくなり遮光部材が光路を遮らないようにするには、
蛇腹や多関節リンクを用いなければならず、高価なもの
となる問題点があった。また、レンズ部に移動を検出す
るための遮光部材を用いると両遮光部材が干渉を起こす
ため設計が複雑なものとなる問題点があった。そこで本
発明は、上述した不具合を解消する装置を提供するもの
である。In this type of copying machine, it is necessary to detect the position of the carriage on the axes X 1 -X 2 , and the shading device 6 for shading the image light R is also included in the carriage 4. It is necessary to have a mechanism that follows the movement of the. In the light-shielding device for the lens unit that moves according to the copy magnification, if the variation range of the magnification increases, the lens moving distance increases and the light-shielding member does not block the optical path.
Since a bellows or an articulated link has to be used, there is a problem that it becomes expensive. Further, if a light blocking member for detecting movement is used in the lens portion, there is a problem that the design becomes complicated because both light blocking members interfere with each other. Therefore, the present invention provides an apparatus that eliminates the above-mentioned problems.
【０００４】[0004]
【課題を解決するための手段】本発明の複写機は、基本
的な手段としてレンズ支持装置にとりつけられる第１の
遮光部材と、複写機の本体にとりつけられる第２の遮光
部材とを備える。The copying machine of the present invention comprises, as a basic means, a first light shielding member attached to the lens supporting device and a second light shielding member attached to the main body of the copying machine.
【０００５】[0005]
【作用】レンズ支持装置の移動軸上の位置に応じて第１
の遮光部材と第２の遮光部材の係合位置が変化する。According to the position on the moving axis of the lens supporting device, the first
The engaging position of the light shielding member and the second light shielding member changes.
【０００６】[0006]
【実施例】図１は本発明の遮光装置の概要を示す説明図
である。ハウジング２０内を軸Ｘ1−Ｘ2方向に移動する
キャリッジ１０は光学レンズ系１２を装備している。キ
ャリッジ１０は、例えば位置Ｂにあって、等倍（１００
％）の複写を実行する。この１００％の複写位置を基準
位置とすると、この基準位置からキャリッジ１０がＸ1
方向へ移動した位置Ａにあっては、複写倍率は１００％
以上の拡大複写となり（例えば１４１％）、キャリッジ
１０がＸ2方向へ移動した位置Ｃにあっては、複写倍率
は１００％以下の縮小複写となる（例えば７０％）。本
発明にあっては、キャリッジ１０側に設ける第１の遮光
部材３０と、本体のハウジング２０側に設ける第２の遮
光部材４０とにより遮光装置を構成するものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing the outline of the light shielding device of the present invention. The carriage 10 that moves in the housing 20 in the direction of the axis X 1 -X 2 is equipped with an optical lens system 12. The carriage 10 is, for example, at the position B, and has the same size (100
%) Is copied. If this 100% copy position is used as the reference position, the carriage 10 moves from the reference position to X 1
At position A moved in the direction, the copy magnification is 100%.
The above-described enlarged copy is performed (141%, for example), and at the position C where the carriage 10 has moved in the X 2 direction, the copy magnification is reduced to 100% or less (70%, for example). In the present invention, the light shielding device is configured by the first light shielding member 30 provided on the carriage 10 side and the second light shielding member 40 provided on the housing 20 side of the main body.
【０００７】図２は本発明の複写機の要部の平面図を示
す。本体ハウジング２００配置検出装置用のブラケット
２１０を有し、ブラケット２１０に対して位置検出装置
２６０を支持する。一方、ハウジング２００にとりつけ
たガイドレール１５０に案内されるキャリッジ１００
は、光学レンズ系１２０を装備し、図示しない駆動系に
よって軸Ｘ1−Ｘ2方向に移動する。全体を符号３００で
示す遮光装置は、フィルム等のフレキシブルな材料でつ
くられる第１の遮光部材３１０と、同様のフレキシブル
な材料でつくられる第２の遮光部材３２０で構成され
る。FIG. 2 is a plan view of the essential parts of the copying machine of the present invention. The main body housing 200 has a bracket 210 for the arrangement detection device, and supports the position detection device 260 with respect to the bracket 210. On the other hand, the carriage 100 guided by the guide rail 150 attached to the housing 200
Is equipped with an optical lens system 120, and is moved in the directions of the axes X 1 -X 2 by a drive system (not shown). The light-shielding device generally designated by reference numeral 300 is composed of a first light-shielding member 310 made of a flexible material such as a film and a second light-shielding member 320 made of a similar flexible material.
【０００８】図７は遮光装置３００の詳細を示し、第２
の遮光部材３２０に形成した２本のスリット３２４，３
２６の間を第１の遮光部材３１０が通過して両者が係合
する状態を示している。第１の遮光部材３１０は、その
第１の端部３１０ａがキャリッジ１００に設けたストッ
パ１１０に固定され、第２の端部３１０ｂが本体側のブ
ラケット２１０に設けたストッパ２５０に固定される。
したがって、第１の遮光部材３１０は、ループを形成す
る。第２の遮光部材３２０は、第１の端部３２０ａが図
７に示すように、スリット３２４，３２６を介して第１
の遮光部材３１０に摺動自在に係合し、第２の端部３２
０ｂは本体側のブラケット２１０に設けたストッパ２２
０に固定される。第１の端部３２０ａは第１の遮光部材
３１０に沿って湾曲する柔軟性を有する。位置検出装置
２６０は、例えば発光素子２６２と、受光素子２６４を
対向して備え、発光素子２６２と受光素子２６４の間を
第１の遮光部材３１０が通過することを検知する。FIG. 7 shows the details of the shading device 300.
Slits 324, 3 formed in the light shielding member 320 of
It shows a state in which the first light shielding member 310 passes through the space between 26 and engages with each other. The first light blocking member 310 has a first end 310a fixed to a stopper 110 provided on the carriage 100, and a second end 310b fixed to a stopper 250 provided on a bracket 210 on the main body side.
Therefore, the first light blocking member 310 forms a loop. In the second light blocking member 320, the first end portion 320a has the first end portion 320a via the slits 324 and 326 as shown in FIG.
Slidably engaged with the light blocking member 310 of the second end 32
0b is a stopper 22 provided on the bracket 210 on the main body side
It is fixed at 0. The first end 320 a has the flexibility to bend along the first light blocking member 310. The position detection device 260 includes, for example, a light emitting element 262 and a light receiving element 264 facing each other, and detects that the first light blocking member 310 passes between the light emitting element 262 and the light receiving element 264.
【０００９】図２はレンズ系１２０を支持したキャリッ
ジ１００が等倍複写である１００％を実行する基準位置
にあることを示す。この位置は、位置検知装置２６０
が、第１の遮光部材３１０の第１の端部３１０ａを検知
したときに、キャリッジ１００を駆動するパルスモータ
等の駆動系にその旨を通知し、位置決めが達成される。FIG. 2 shows that the carriage 100 supporting the lens system 120 is in a reference position for performing 100% copying which is equal to 100%. This position is determined by the position detection device 260.
However, when the first end portion 310a of the first light blocking member 310 is detected, the fact is notified to the drive system such as the pulse motor that drives the carriage 100, and the positioning is achieved.
【００１０】図３は、キャリッジ１００がＸ1方向に距
離Ｌ1だけ移動した状態を示す。この移動距離は、図２
に示す基準位置からキャリッジ１００が距離Ｌ1だけ移
動するのに必要なパルスモータの回転量等によって制御
される。図３の位置にあっては、例えば１４１％の複写
が達成される。この移動の間には、第１の遮光部材３１
０は常に位置検出装置２６０の発光素子２６２と受光素
子２６４の間に存在する。位置検出装置２６０はこの状
態を検出して、キャリッジ１００が拡大方向に位置して
いることを認識する。この移動の際に、第２の遮光部材
３２０は、第１の遮光部材３１０の姿勢に従い、第１の
遮光部材との係合位置を変更する。FIG. 3 shows a state in which the carriage 100 has moved in the X 1 direction by a distance L 1 . This moving distance is shown in FIG.
It is controlled by the amount of rotation of the pulse motor required for the carriage 100 to move the distance L 1 from the reference position shown in FIG. In the position of FIG. 3, for example, 141% copying is achieved. During this movement, the first light blocking member 31
0 always exists between the light emitting element 262 and the light receiving element 264 of the position detecting device 260. The position detection device 260 detects this state and recognizes that the carriage 100 is located in the enlargement direction. At the time of this movement, the second light blocking member 320 changes the engagement position with the first light blocking member according to the posture of the first light blocking member 310.
【００１１】図４は、キャリッジ１００が更にＸ1方向
に移動し、１６３％の複写位置に位置決めされた状態を
示す。この位置にあっても、第１の遮光部材３１０と第
２の遮光部材３２０は、係合位置は変化するものの、係
合状態を保ち、良好な遮光を達成する。FIG. 4 shows a state in which the carriage 100 is further moved in the X 1 direction and is positioned at the copy position of 163%. Even at this position, the first light-blocking member 310 and the second light-blocking member 320 maintain the engaged state, although the engaging position changes, and achieve good light blocking.
【００１２】次に、図５はキャリッジ１００が基準位置
からＸ2方向へ移動し、７０％の縮小複写を実行する位
置に位置決めされた状態を示す。キャリッジ１００が基
準位置からＸ2方向へ移動すると、第１の遮光部材３１
０は、位置検出装置２６０から外れることとなる。位置
検出装置２６０は、この状態を検知して、キャリッジ１
００が縮小複写位置にあることを認識する。Next, FIG. 5 shows a state in which the carriage 100 is moved in the X 2 direction from the reference position and is positioned at a position where 70% reduction copying is executed. When the carriage 100 moves from the reference position in the X 2 direction, the first light blocking member 31
0 is out of the position detection device 260. The position detection device 260 detects this state and detects the carriage 1
It is recognized that 00 is at the reduced copy position.
【００１３】図６は、キャリッジ１００が更にＸ2方向
に移動した状態を示す。この位置にあっても、第１の遮
光部材３１０と第２の遮光部材３２０は、係合位置は変
化するものの、係合を保ち、良好な遮光を達成する。FIG. 6 shows the carriage 100 further moved in the X 2 direction. Even at this position, the first light-blocking member 310 and the second light-blocking member 320 maintain the engagement and achieve good light-blocking, although the engaging position changes.
【００１４】[0014]
【発明の効果】本発明は、フレキシブルな材料でつくら
れた第１の遮光部材と第２の遮光部材とを組合せること
によって、簡素な構成によって良好な遮光を達成するこ
とができる。また、遮光部材を用いてレンズ系を支持す
るキャリッジの位置を確実に検知することができる。According to the present invention, good light shielding can be achieved with a simple structure by combining the first light shielding member and the second light shielding member made of a flexible material. Further, it is possible to reliably detect the position of the carriage that supports the lens system by using the light shielding member.
【図１】 本発明の概要を示す説明図。FIG. 1 is an explanatory diagram showing an outline of the present invention.
【図２】 本発明の実施例を示す平面図（等倍、１００
％）。FIG. 2 is a plan view showing the embodiment of the present invention (100 ×, 100 ×).
%).
【図３】 本発明の実施例を示す平面図（拡大、１４１
％）。FIG. 3 is a plan view showing an embodiment of the present invention (enlarged, 141
%).
【図４】 本発明の実施例を示す平面図（拡大、１６３
％）。FIG. 4 is a plan view showing an embodiment of the present invention (enlarged, 163)
%).
【図５】 本発明の実施例を示す平面図（縮小、７０
％）。FIG. 5 is a plan view (reduction, 70) showing an embodiment of the present invention.
%).
【図６】 本発明の実施例を示す平面図（縮小、６１
％）。FIG. 6 is a plan view (reduction, 61) showing an embodiment of the present invention.
%).
【図７】 本発明の要部を示す説明図。FIG. 7 is an explanatory diagram showing a main part of the present invention.
【図８】 従来の技術の説明図。FIG. 8 is an explanatory diagram of a conventional technique.
１００ キャリッジ、 １１０ ストッパ、 １２０
レンズ系、 １５０ガイドレール、 ２００ ハウジン
グ、 ２１０ ブラケット、 ２２０ ストッパ、 ２
５０ ストッパ、 ２６０ 位置検出装置、 ３００
遮光装置、３１０ 第１の遮光部材、 ３２０ 第２の
遮光部材。100 carriage, 110 stopper, 120
Lens system, 150 guide rails, 200 housing, 210 bracket, 220 stopper, 2
50 stopper, 260 position detection device, 300
Shading device, 310 1st shading member, 320 2nd shading member.
Claims (4)
レンズ支持装置と、レンズ支持装置と複写機の本体との
間に配設される遮光部材とを備えた複写機の遮光装置に
おいて、 レンズ支持装置にとりつけられる第１の遮光部材と、複
写機の本体にとりつけられる第２の遮光部材とを備え、
レンズ支持装置の移動軸上の位置に応じて第１の遮光部
材と第２の遮光部材の係合位置が変化することを特徴と
する複写機の遮光装置。1. A shading device for a copying machine, comprising: a lens supporting device that moves along an optical axis according to a copying magnification; and a shading member that is arranged between the lens supporting device and a main body of the copying machine. A first light blocking member attached to the lens supporting device, and a second light blocking member attached to the main body of the copying machine,
A shading device for a copying machine, characterized in that an engaging position of a first shading member and a second shading member changes according to a position on a movement axis of a lens supporting device.
レキシブルな材料で構成され、第２の遮光部材は第１の
遮光部材の姿勢の変化に従って姿勢を変化するフレキシ
ブル特性を有することを特徴とする複写機の遮光装置。2. The first light-shielding member and the second light-shielding member are made of a flexible material, and the second light-shielding member has a flexible characteristic of changing its posture according to the change of the posture of the first light-shielding member. A shading device for a copying machine.
支持装置に固定され、第２の端部が複写機本体に固定さ
れてループを形成するとともに、第２の遮光部材は第１
の端部が第１の遮光部材に対して摺動自在に係合され、
第２の端部が複写機の本体に固定されることを特徴とす
る請求項２記載の複写機の遮光装置。3. The first light-shielding member has a first end fixed to the lens supporting device and a second end fixed to the copying machine body to form a loop, and the second light-shielding member is First
The end portion of is slidably engaged with the first light shielding member,
The shading device for a copying machine according to claim 2, wherein the second end is fixed to the main body of the copying machine.
もに移動する第１の遮光部材の位置及びその通路を検知
する位置検出装置を備えてなることを特徴とする請求項
３記載の複写機の遮光装置。4. A copying machine according to claim 3, wherein the main body of the copying machine is provided with a position detecting device for detecting the position of the first light shielding member which moves together with the lens supporting device and the passage thereof. Shading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6248092A JPH08114861A (en) | 1994-10-13 | 1994-10-13 | Light shielding device of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6248092A JPH08114861A (en) | 1994-10-13 | 1994-10-13 | Light shielding device of copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08114861A true JPH08114861A (en) | 1996-05-07 |
Family
ID=17173098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6248092A Pending JPH08114861A (en) | 1994-10-13 | 1994-10-13 | Light shielding device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08114861A (en) |
-
1994
- 1994-10-13 JP JP6248092A patent/JPH08114861A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |