JPH02113235A - Scanning device - Google Patents
Scanning deviceInfo
- Publication number
- JPH02113235A JPH02113235A JP26670388A JP26670388A JPH02113235A JP H02113235 A JPH02113235 A JP H02113235A JP 26670388 A JP26670388 A JP 26670388A JP 26670388 A JP26670388 A JP 26670388A JP H02113235 A JPH02113235 A JP H02113235A
- Authority
- JP
- Japan
- Prior art keywords
- moving frame
- friction
- belt
- driving pulley
- moving
- 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 abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000000704 physical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Optical Systems Of Projection Type Copiers (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
皮果上■肌尻公立
本発明は複写機の走査装置に関する。更に詳しくは、本
発明は原稿像を読み取る可動光学系を有する複写機の走
査装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scanning device for a copying machine. More particularly, the present invention relates to a scanning device for a copying machine having a movable optical system for reading an original image.
l米亘侠歪
原稿固定型複写機の原稿読み取り用露光部は、原稿載置
面に置かれた原稿を走査することによって、被露光部上
に結像させる。通常露光部は、原稿載置面に光を照射す
る露光ランプなどの露光光源および原稿載置面からの反
射光を所定方向に反射するミラー等の反射部材を有す3
第1移動枠と、この第1移動枠により反射された光像を
レンズ側に反射するミラー等の反射部材を有する第2移
動枠とからなる。The original reading exposure section of the distorted fixed original type copying machine scans the original placed on the original placing surface to form an image on the exposed part. The normal exposure section includes an exposure light source such as an exposure lamp that irradiates light onto the document placement surface, and a reflecting member such as a mirror that reflects light reflected from the document placement surface in a predetermined direction.
It consists of a first moving frame and a second moving frame having a reflecting member such as a mirror that reflects the optical image reflected by the first moving frame towards the lens side.
原稿を走査するために、第1移動枠および第2移動枠を
移動させる駆動伝達手段としては、主にワイヤーと動滑
車とを有するもの(以下、「ワイヤー等」という)が用
いられている。In order to scan a document, drive transmission means for moving the first moving frame and the second moving frame mainly include a wire and a movable pulley (hereinafter referred to as "wire etc.").
しかしながら、ワイヤー等を用いてモーターの駆動力を
伝達する場合スリップが生じ昌く、またスリップが生じ
ないようにプーリにワイヤーを多重に巻いて使用すると
組立が大変面倒になるという問題がある。However, when the driving force of the motor is transmitted using a wire or the like, slippage often occurs, and if the wire is wound around the pulley multiple times to prevent slippage, assembly becomes very troublesome.
さらに、ワイヤー等を用いた場合、第1移動枠および第
2移動枠の各両端側のワイヤーの初期張力のバランス等
の調整が難しい、また、露光部の走査の繰返しに伴いワ
イヤーは伸びる傾向にあり、ワイヤー物性のばらつきに
よってワイヤーの伸びる量が各両端側で異なるため再度
調整する必要が生じる。これらの調整には多くの時間が
費やされる。Furthermore, when wires are used, it is difficult to adjust the initial tension balance of the wires at both ends of the first moving frame and the second moving frame, and the wires tend to stretch as the exposure area is repeatedly scanned. However, due to variations in the physical properties of the wire, the amount by which the wire stretches differs at each end, making it necessary to readjust it. These adjustments take a lot of time.
そこで、ワイヤー等の代わりに歯付ベルトが駆動伝達部
材として用いられた駆動伝達手段を有する走査装置、た
とえば第2移動枠に設けられた一対の歯付プーリと、そ
れに対して駆動プーリ側に第1移動枠が設けられ、中途
部を互いに逆方向に折返すように巻掛けられた歯付ベル
トとからなる駆動伝達手段(特開昭61−110128
号公報参照)、第1移動枠および第2移動枠がそれぞれ
径の異なる駆動プーリと従動プーリとを連結する歯付ベ
ルト上に設けられた駆動伝達手段(特開昭62−421
42号公報参照)などが提案されている。Therefore, a scanning device having a drive transmission means in which a toothed belt is used as a drive transmission member instead of a wire etc., for example, a pair of toothed pulleys provided on the second moving frame and a second drive pulley on the drive pulley side. A drive transmission means (Japanese Patent Laid-Open No. 61-110128
(see Japanese Patent Laid-Open No. 62-421), a drive transmission means in which a first moving frame and a second moving frame are provided on a toothed belt that connects a driving pulley and a driven pulley with different diameters (see Japanese Patent Laid-Open No. 62-421).
(see Publication No. 42) have been proposed.
■が ゛ しようとするi
しかしながら、前者の発明においては、歯付ベルトの一
部分が両歯ベルトという特殊な形状である必要があり、
ベルトの製造上の難しさにおいて実用的であるとは言え
ない。さらに歯付ベルトの両端を固定しなければならな
いので、ベルト固定手段が必要であるだけでなく、ベル
トの長さを合わせるのが困難であるなどの問題点がある
。また後者の発明においては、ベルトが第1移動枠およ
び第2移動枠の各両端側にそれぞれ1本必要であるため
、ベルト数に対応してコストが高くなるだけでなく、構
造が複雑化し、各ベルトの初期張力の調整が困難になり
、また量産時において各機械のベルト物性のばらつきに
よる故障が多くなる等の問題点がある。■ However, in the former invention, a part of the toothed belt needs to have a special shape of a double-toothed belt.
This cannot be said to be practical due to the difficulty in manufacturing the belt. Furthermore, since both ends of the toothed belt must be fixed, not only is a means for fixing the belt required, but there are also problems such as difficulty in adjusting the length of the belt. In addition, in the latter invention, since one belt is required on each end side of the first moving frame and the second moving frame, the cost not only increases corresponding to the number of belts, but also the structure becomes complicated. It becomes difficult to adjust the initial tension of each belt, and there are also problems such as an increase in failures due to variations in belt physical properties of each machine during mass production.
本発明はこのような点に鑑み、簡単な構成で精度のよい
走査装置を提供することを目的とする。In view of these points, it is an object of the present invention to provide a highly accurate scanning device with a simple configuration.
j ° るための
上記の目的を達成するため本発明の走査装置は、原稿像
を読み取る可動光学系を構成する第1移動枠および第2
移動枠と、一対のプーリ間に張架されてエンドレスに可
動されると共に前記第1移動枠が固定された歯付ベルト
と、前記第2移動枠に取り付けられ前記歯付ベルトによ
って駆動される第2移動枠駆動プーリと、前記第2移動
枠駆動プーリと一体に回転する摩擦コロと、該摩擦コロ
に接する固定の摩擦板とから構成されている。In order to achieve the above object, the scanning device of the present invention has a first movable frame and a second movable frame that constitute a movable optical system for reading an original image.
a movable frame, a toothed belt stretched between a pair of pulleys and movable endlessly and to which the first movable frame is fixed; and a toothed belt that is attached to the second movable frame and driven by the toothed belt. It is composed of a second movable frame drive pulley, a friction roller that rotates together with the second movable frame drive pulley, and a fixed friction plate that is in contact with the friction roller.
立−■
本発明の構成によると、第1移動枠は歯付ベルトと同一
速度で移動し、−力筒2移動枠は歯付ベルトによって第
2移動枠駆動プーリと摩擦板上の摩擦コロが転がること
により第1移動枠より遅い所定の速度で安定した移動を
行う。According to the configuration of the present invention, the first moving frame moves at the same speed as the toothed belt, and the toothed belt causes the second moving frame to move between the second moving frame drive pulley and the friction roller on the friction plate. By rolling, stable movement is performed at a predetermined speed slower than that of the first moving frame.
叉JJt
以下、本発明の実施例について図面に基づいて説明する
。叉JJt Hereinafter, embodiments of the present invention will be described based on the drawings.
第1図は、本発明の走査装置の一実施例を示す斜視図で
ある。FIG. 1 is a perspective view showing an embodiment of the scanning device of the present invention.
露光部は第1移動枠(1)および第2移動枠(2)から
なる、第1移動枠(1)は、主として露光ランプ(13
)、 ミラー(14)および第1移動枠(1)の両端
で歯付ベルト(以下「ベルト」という) (12)と固
定される固定部(4)から構成されている。第1移動枠
(1)は、その両端にある互いに平行な光学系側板(1
7)に沿って往復移動しうるように設置されている。し
たがって、複写機の原稿載置面に露光ランプ(13)か
らの光を照射しながら原稿載置面を走査することができ
る。そして、走査しながら原稿載置面からの反射光をミ
ラー(14)によって第2移動枠(2)の方向へ反射す
る。The exposure section consists of a first moving frame (1) and a second moving frame (2). The first moving frame (1) mainly consists of an exposure lamp (13).
), a mirror (14), and a fixed part (4) fixed to a toothed belt (hereinafter referred to as "belt") (12) at both ends of the first moving frame (1). The first moving frame (1) has optical system side plates (1) parallel to each other at both ends thereof.
7) so that it can be moved back and forth. Therefore, it is possible to scan the document placement surface of the copying machine while irradiating the document placement surface with light from the exposure lamp (13). Then, while scanning, the reflected light from the document placement surface is reflected by the mirror (14) toward the second moving frame (2).
第2移動枠(2)は、第1移動枠(1)からの反射光を
受はミラー(16)へ反射するミラー(15)、ミラー
(15)からの反射光を受は感光体ドラム上に反射光
を結像させるレンズ(図示せず)の存する方向に反射す
るミラー(16) 、及びベル) (12)を第2移動
枠駆動プーリ(7)に押しつける補助プーリ(10)と
から構成されている。なお補助プーリ(10)は、本実
施例の構成には必ずしも必要ではなく、適宜第2移動枠
(2)に設置される。しかしながら、第2移動枠駆動プ
ーリ(7)とベル) (12)との歯のかみ合わせを確
実に行なうことによって、第2移動枠(2)を安定して
移動させるためには、補助プーリ(lO)を設けるのが
好ましい。The second moving frame (2) receives the reflected light from the first moving frame (1) and reflects it onto the mirror (16).The second moving frame (2) receives the reflected light from the mirror (15) and reflects it onto the photoreceptor drum. It consists of a mirror (16) that reflects light in the direction of a lens (not shown) that forms an image of the reflected light, and an auxiliary pulley (10) that presses the bell (12) against the second moving frame drive pulley (7). has been done. Note that the auxiliary pulley (10) is not necessarily necessary for the configuration of this embodiment, and is installed on the second moving frame (2) as appropriate. However, in order to move the second moving frame (2) stably by reliably engaging the teeth of the second moving frame drive pulley (7) and the bell (12), the auxiliary pulley (lO ) is preferably provided.
駆動伝達手段は、主として駆動軸(3)、駆動プーリ(
5)、第2移動枠駆動プーリ(7)、ベルト(12)等
から構成される。駆動軸(3)と連結している駆動ブ−
リ(5)には、従動プーリ(6)と対になって、内側に
歯を有しエンドレスに可動されるヘルド(12)が張架
されている。第2移動枠駆動プーリ(7)と一体に回転
する摩擦コロ(8)は、駆動プーリ(5)の回転によっ
てベルト(12)と連動し、光学系側板(17)の外側
面に設けられた摩擦板(11)上を転がる。The drive transmission means mainly includes a drive shaft (3) and a drive pulley (
5), a second moving frame drive pulley (7), a belt (12), etc. Drive boot connected to drive shaft (3)
A heald (12), which has teeth on the inside and is movable endlessly, is stretched over the pulley (5) and paired with the driven pulley (6). A friction roller (8) that rotates together with the second moving frame drive pulley (7) is interlocked with the belt (12) by the rotation of the drive pulley (5), and is provided on the outer surface of the optical system side plate (17). It rolls on the friction plate (11).
尚、摩擦コロ(8)の直径は第2移動枠駆動プーリ(7
)のピッチ円の寸法と同一寸法である。摩擦コロ(8)
は軸の部分で連結板(20)を介して押えコロ(9)と
連結しており、該押えコロ(9)は摩擦コロ(8)と協
働して前記摩擦板(11)を挟圧しつつ第2移動枠(2
)と共に移動する。なお、押えコロ(9)は、本発明の
構成には必ずしも必要ではない。しかしながら、摩擦板
(11)上で+!!t!コロ(8)がスリップするのを
防止するためには、押えコロ(9)を設けるのが好まし
い。The diameter of the friction roller (8) is the same as that of the second moving frame drive pulley (7).
) has the same dimensions as the pitch circle. Friction roller (8)
is connected to a presser roller (9) via a connecting plate (20) at the shaft portion, and the presser roller (9) cooperates with the friction roller (8) to pinch the friction plate (11). Tsutsu second moving frame (2
). Note that the presser roller (9) is not necessarily necessary for the configuration of the present invention. However, + on the friction plate (11)! ! T! In order to prevent the rollers (8) from slipping, it is preferable to provide a presser roller (9).
ヘルl−(12)の初期張力を調整しうるように、従動
プーリ(6)を第2移動枠(2)の移動方向に対して平
行に移動させる取すイ]け手段を従動プーリ(6)又は
光学系側板(17)に設けるのが好ましい。The driven pulley (6) is provided with means for moving the driven pulley (6) parallel to the moving direction of the second moving frame (2) so that the initial tension of the heel (12) can be adjusted. ) or the optical system side plate (17).
光学系(R[(17)の外側面に設iJられた摩擦板(
11)は、光学系側4Fi、(17)に完全に固定され
ていてもよく、また適宜取伺位置を調整しうるように適
当な取付手段を用いて固定されていてもよい。完全な固
定が行なわれる場合、本実施例の装置を組立てる段階で
、寸法的に位置を管理すること?5こよって調整が行な
われる。The friction plate installed on the outer surface of the optical system (R [(17)
11) may be completely fixed to the optical system side 4Fi, (17), or may be fixed using a suitable mounting means so that the picking position can be adjusted as appropriate. If complete fixation is to be performed, is it necessary to control the dimensional position at the stage of assembling the device of this embodiment? 5. Adjustments are made accordingly.
第1移動枠(1)及び第2移動枠(2)からなる露光部
(可動光学系)は、駆動プーリ(5)、従動プーリ(6
)、ベルト(12) 、第2移動枠駆動プーリ(7)、
摩擦コロ(8)、摩擦板(11)等から構成される駆動
伝達手段によって、光学系側板(17)lを往復移動す
るが、このとき第1移動枠(1)の所定の移動速度に対
して、第2移動枠(2)は、第1移動枠(1)の2分の
1の速度で同方向に移動する。前記駆動伝達手段は、第
1移動枠および第2移動枠の両側に設けられていてもよ
く、また片側のみに設けられていてもよい。片側のみに
駆動伝達手段を設けた場合、ベルトの初期張力の設定を
短時間で行なうことができるという利点がある。The exposure section (movable optical system) consisting of a first moving frame (1) and a second moving frame (2) includes a driving pulley (5) and a driven pulley (6).
), belt (12), second moving frame drive pulley (7),
The optical system side plate (17)l is reciprocated by a drive transmission means composed of friction rollers (8), friction plates (11), etc., and at this time, the speed is Thus, the second moving frame (2) moves in the same direction at half the speed of the first moving frame (1). The drive transmission means may be provided on both sides of the first moving frame and the second moving frame, or may be provided only on one side. When the drive transmission means is provided only on one side, there is an advantage that the initial tension of the belt can be set in a short time.
第2図は本実施例の走査装置の要部の断面図である。第
2図において第2移動枠(2)の底部には第2移動枠(
2)を支持しながら移動可能なスライダー(18)が設
けられており1.光学系側板(17)の内側面にスライ
ダー(18)が移動するためのスライダーレール(19
)が設けられている。スライダー(18)およびスライ
ダーレール(19)は、本実施例の構成に必ずしも必要
ではないが、第2移動枠(2)の移動を安定に行なうた
めに適宜設りるのが好ましい。FIG. 2 is a sectional view of the main parts of the scanning device of this embodiment. In Fig. 2, the bottom of the second moving frame (2) is attached to the second moving frame (2).
A slider (18) is provided which is movable while supporting 1. A slider rail (19) for moving the slider (18) is provided on the inner surface of the optical system side plate (17).
) is provided. Although the slider (18) and the slider rail (19) are not necessarily necessary for the configuration of this embodiment, it is preferable to provide them as appropriate to ensure stable movement of the second moving frame (2).
また、スライダー(18)は、第2移動枠(2)の一端
又は両端に1個又は2個以上設Uられていてもよい。Further, one or more sliders (18) may be provided at one end or both ends of the second moving frame (2).
3」−q効果
本発明の走査装置は、環状の歯付ベルトを有しているた
め、該ベルトの固定手段や長さ自わせが不要である。ま
た、前記ベルト架けの構成が簡単であるので組立作業、
初期張力の調整等を容易に行なうことができる。さらに
本発明は、前記ベルトを1本、多くとも2本有する簡単
な構造となっているので、コストが低く、ヘルド物性お
よび各走査装置の調整のばらつきに基づく故障の少ない
安定した性能を発揮しうるという効果を奏する。3''-q Effect Since the scanning device of the present invention has an annular toothed belt, there is no need for fixing means or for adjusting the length of the belt. In addition, since the structure of the belt hanging is simple, the assembly work is easy.
The initial tension can be easily adjusted. Furthermore, since the present invention has a simple structure having one or at most two belts, the cost is low and stable performance is exhibited with fewer failures due to variations in heald physical properties and adjustment of each scanning device. It has a soothing effect.
第1図は本発明の一実施例を示す斜視図であり、第2図
はその要部を示す断面図である。
(1)−−一第1移動枠、(2) 第2移動枠。
(3)・−駆動軸、 (4)−固定部。
(5) −駆動ブーリ、(6)−従動プーリ。
(7)・−第2移動枠駆動プーリ、(8) −摩擦コ
ロ。
(9) 押えコロ、 (10)−補助プーリ(11)
・−1!!擦板、 (12)−ヘル1−1(13)−露
光ランプ、 (14) ミラー・(15)−m−ミ
ラー、 (16)、−ミラー(17)・−光学系側板
、 (18)−スライダー(19)−−スライダーレー
ル、 (20)一連結板。FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing the main parts thereof. (1) ---First moving frame, (2) Second moving frame. (3) - Drive shaft, (4) - Fixed part. (5) - Drive pulley, (6) - Driven pulley. (7) - Second moving frame drive pulley, (8) - Friction roller. (9) Presser roller, (10) - Auxiliary pulley (11)
・-1! ! Rubbing plate, (12) - Hell 1-1 (13) - Exposure lamp, (14) Mirror・(15)-m-Mirror, (16), -Mirror (17)・-Optical system side plate, (18)- Slider (19)--Slider rail, (20) Series of connecting plates.
Claims (1)
枠および第2移動枠と、一対のプーリ間に張架されてエ
ンドレスに可動されると共に前記第1移動枠が固定され
た歯付ベルトと、前記第2移動枠に取り付けられ前記歯
付ベルトによって駆動される第2移動枠駆動プーリと、
前記第2移動枠駆動プーリと一体に回転する摩擦コロと
、該摩擦コロに接する固定の摩擦板とから成る走査装置
。(1) A first movable frame and a second movable frame that constitute a movable optical system for reading a document image, and a toothed frame that is stretched between a pair of pulleys and is movable endlessly, and the first movable frame is fixed. a belt, a second moving frame drive pulley attached to the second moving frame and driven by the toothed belt;
A scanning device comprising a friction roller that rotates together with the second movable frame drive pulley and a fixed friction plate that is in contact with the friction roller.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63266703A JPH0727175B2 (en) | 1988-10-21 | 1988-10-21 | Scanning device |
US07/421,973 US5002366A (en) | 1988-10-21 | 1989-10-13 | Scanning apparatus for reading an original image |
EP89119417A EP0365004B1 (en) | 1988-10-21 | 1989-10-19 | Scanning apparatus for reading an original image |
DE89119417T DE68907849T2 (en) | 1988-10-21 | 1989-10-19 | Scanner for reading an original image. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63266703A JPH0727175B2 (en) | 1988-10-21 | 1988-10-21 | Scanning device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02113235A true JPH02113235A (en) | 1990-04-25 |
JPH0727175B2 JPH0727175B2 (en) | 1995-03-29 |
Family
ID=17434510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63266703A Expired - Lifetime JPH0727175B2 (en) | 1988-10-21 | 1988-10-21 | Scanning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0727175B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59176033U (en) * | 1983-05-09 | 1984-11-24 | カシオ計算機株式会社 | Copy machine optical system scanning mechanism |
JPS6242142A (en) * | 1985-08-19 | 1987-02-24 | Konishiroku Photo Ind Co Ltd | Scanning device |
-
1988
- 1988-10-21 JP JP63266703A patent/JPH0727175B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59176033U (en) * | 1983-05-09 | 1984-11-24 | カシオ計算機株式会社 | Copy machine optical system scanning mechanism |
JPS6242142A (en) * | 1985-08-19 | 1987-02-24 | Konishiroku Photo Ind Co Ltd | Scanning device |
Also Published As
Publication number | Publication date |
---|---|
JPH0727175B2 (en) | 1995-03-29 |
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