JPH0876266A - Method and device for adjusting optical system of copying machine - Google Patents
Method and device for adjusting optical system of copying machineInfo
- Publication number
- JPH0876266A JPH0876266A JP23413194A JP23413194A JPH0876266A JP H0876266 A JPH0876266 A JP H0876266A JP 23413194 A JP23413194 A JP 23413194A JP 23413194 A JP23413194 A JP 23413194A JP H0876266 A JPH0876266 A JP H0876266A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- longitudinal direction
- straight line
- roof
- slit
- 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
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、複写機の光学系調整
方法及び複写機の光学系調整装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical system adjusting method for a copying machine and an optical system adjusting device for a copying machine.
【０００２】[0002]
【従来の技術】複写機は、例えば、原稿積載台と、副走
査方向に細長く伸びるスリットと、このスリットと一体
的に副走査方向に移動する第１のミラーと、この第１の
ミラーより遅い速度で移動し、第１のミラーからの反射
光を再度反射するための２つの反射面が略直交するよう
に構成した第１の屋根型鏡と、この第１の屋根型鏡から
の反射光を結像させるためのレンズと、このレンズから
射出された光線を再度反射する第２の屋根型鏡と、この
第２の屋根型鏡からの反射光を再度反射し像担持体に導
く第６のミラーとを備え、原稿積載台に載置された原稿
の画像を像担持体に結像するように構成されるものがあ
る。2. Description of the Related Art A copying machine is, for example, a document stacking table, a slit elongated in the sub-scanning direction, a first mirror that moves integrally with the slit in the sub-scanning direction, and a slower than the first mirror. A first roof mirror configured to move at a speed and to re-reflect the light reflected from the first mirror so that two reflecting surfaces are substantially orthogonal to each other, and light reflected from the first roof mirror. A lens for forming an image, a second roof-type mirror that reflects the light beam emitted from the lens again, and a light that is reflected from the second roof-type mirror and is guided to the image carrier again. , And a mirror configured to form an image of a document placed on the document stacking table on the image carrier.
【０００３】[0003]
【発明が解決しようとする課題】このような複写機で
は、第１の屋根型鏡、第２の屋根型鏡及び第６のミラー
等の製作上の誤差や組付上の誤差等によって、原稿載置
面上スリット長手方向に平行な直線やスリット長手方向
に平行な直線に直交する直線が、像担持体上の正規の露
光位置に結像されないで、ゆがみや位置ずれが生じるこ
とがある。SUMMARY OF THE INVENTION In such a copying machine, the manuscript is subject to manufacturing errors or assembling errors of the first roof type mirror, the second roof type mirror and the sixth mirror. A straight line parallel to the slit longitudinal direction on the mounting surface and a straight line orthogonal to the straight line parallel to the slit longitudinal direction may not be imaged at the regular exposure position on the image carrier, resulting in distortion or displacement.
【０００４】従って、原稿積載面上スリット長手方向に
平行な直線及びこの直線に直交する直線が、像担持体面
上でそれぞれスリット長手方向に平行な直線、および
直交する直線として、正規の位置に結像されるとい
う３項目の調整が必要であるが、適切な調整方式がな
く、製作精度の向上、組付精度の向上等により対応じて
いるが、少なくとも１項目が修正されないまま、あるい
は３者の中庸をとって調整がなされ、正確にゆがみや位
置ずれを調整することが困難であった。Therefore, a straight line parallel to the slit longitudinal direction on the document stacking surface and a straight line orthogonal to this straight line are connected to the regular positions as straight lines parallel to the slit longitudinal direction and orthogonal straight lines on the image carrier surface. It is necessary to adjust the three items that are to be imaged, but there is no appropriate adjustment method, and it is handled by improving manufacturing accuracy, assembly accuracy, etc., but at least one item remains uncorrected, or three It was difficult to accurately adjust the distortion and misalignment because the adjustment was made in a moderate manner.
【０００５】この発明は、かかる点に鑑みてなされたも
ので、請求項１記載及び請求項２記載の発明は、簡単な
構成で、結像のゆがみや位置ずれを正確に調整すること
ができる複写機の光学系調整方法及び複写機の光学系調
整装置を提供することができる。The present invention has been made in view of the above point, and the inventions described in claims 1 and 2 can accurately adjust the distortion of image formation and the positional deviation with a simple configuration. An optical system adjusting method for a copying machine and an optical system adjusting device for a copying machine can be provided.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するため
に、請求項１記載の発明の複写機の光学系調整方法は、
原稿積載台と、像担持体と、副走査方向に細長く伸びる
スリットと、このスリットと一体的に主走査方向に移動
する第１のミラーと、光軸に関してミラー長手方向の一
端部またはその近傍を支点として回動可能とし他端部を
原稿載置面に略垂直な方向に変位可能で、前記第１のミ
ラーより遅い速度で移動し、前記第１のミラーからの反
射光を再度反射するための２つの反射面が略直交するよ
うに構成した第１の屋根型鏡と、この第１の屋根型鏡か
らの反射光を結像させるためのレンズと、光軸に関して
第１の屋根型鏡と同一側のミラー長手方向の一端部また
はその近傍を支点として回動可能とし他端部を原稿載置
面に略垂直な方向に変位可能で、前記レンズから射出さ
れた光線を再度反射する第２の屋根型鏡と、この第２の
屋根型鏡からの反射光を再度反射し前記像担持体に導
き、かつその反射面内でスリット長手方向に平行な直線
を中心に回動可能とした第６のミラーとを備え、前記第
１の屋根型鏡の一端と前記第２の屋根型鏡の一端を前記
原稿載置面に対して略垂直な方向に変位させスリット長
手方向に平行な直線を調整し、次に前記第６のミラーを
回動させスリット長手方向に平行な直線に直交する直線
を調整し、この第６のミラーを回動による調整によって
生じるスリット長手方向に平行な直線の位置ずれを、前
記第１の屋根型鏡の一端と前記第２の屋根型鏡の一端を
前記原稿載置面に対して略垂直な方向に変位させて調整
し、原稿載置面上スリット長手方向に平行な直線と、原
稿載置面上スリット長手方向に平行な直線に直交する直
線をそれぞれ、前記像担持体上の正規の露光位置に、ス
リット長手方向に平行な直線と、スリット長手方向に平
行な直線に直交する直線として結像させることを特徴と
している。In order to solve the above-mentioned problems, an optical system adjusting method for a copying machine according to the first aspect of the present invention comprises:
A document stacking table, an image carrier, a slit elongated in the sub-scanning direction, a first mirror which moves integrally with the slit in the main scanning direction, and one end in the mirror longitudinal direction with respect to the optical axis or in the vicinity thereof. Since it is rotatable as a fulcrum, and the other end can be displaced in a direction substantially perpendicular to the document placing surface, it moves at a slower speed than the first mirror, and the reflected light from the first mirror is reflected again. First roof-type mirror configured such that the two reflecting surfaces of the first roof-type mirror are substantially orthogonal to each other, a lens for imaging reflected light from the first roof-type mirror, and a first roof-type mirror with respect to the optical axis. A mirror which can rotate about one end in the longitudinal direction of the mirror on the same side as or near the mirror as a fulcrum, and can displace the other end in a direction substantially perpendicular to the document mounting surface, and reflects the light beam emitted from the lens again. 2 roof type mirror and the anti-reflection from this 2nd roof type mirror A sixth mirror that reflects light again and guides it to the image carrier, and is rotatable about a straight line parallel to the slit longitudinal direction within the reflecting surface thereof; And one end of the second roof mirror is displaced in a direction substantially perpendicular to the original placement surface to adjust a straight line parallel to the slit longitudinal direction, and then the sixth mirror is rotated to adjust the slit length. A straight line that is orthogonal to a straight line parallel to the direction is adjusted, and the positional deviation of the straight line that is parallel to the slit longitudinal direction caused by adjusting the sixth mirror by rotating the first mirror and the second roof mirror is performed. Adjust one end of the roof type mirror by displacing it in a direction substantially perpendicular to the document mounting surface, and align the straight line parallel to the slit longitudinal direction on the document mounting surface with the slit longitudinal direction on the document mounting surface. Each of the straight lines orthogonal to the straight line The exposure position, and a straight line parallel to the slit longitudinal direction, is characterized in that for imaging a straight line perpendicular to a line parallel to the slit longitudinal direction.
【０００７】また、請求項２記載の発明の複写機の光学
系調整装置は、原稿積載台と、像担持体と、副走査方向
に細長く伸びるスリットと、このスリットと一体的に主
走査方向に移動する第１のミラーと、光軸に関してミラ
ー長手方向の一端部またはその近傍を支点として回動可
能とし他端部を原稿載置面に略垂直な方向に変位可能
で、前記第１のミラーより遅い速度で移動し、前記第１
のミラーからの反射光を再度反射するための２つの反射
面が略直交するように構成した第１の屋根型鏡と、この
第１の屋根型鏡からの反射光を結像させるためのレンズ
と、光軸に関して第１の屋根型鏡と同一側のミラー長手
方向の一端部またはその近傍を支点として回動可能とし
他端部を原稿載置面に略垂直な方向に変位可能で、前記
レンズから射出された光線を再度反射する第２の屋根型
鏡と、この第２の屋根型鏡からの反射光を再度反射し前
記像担持体に導き、かつその反射面内でスリット長手方
向に平行な直線を中心に回動可能とした第６のミラーと
を備え、前記第１の屋根型鏡の一端と前記第２の屋根型
鏡の一端を前記原稿載置面に対して略垂直な方向の変位
と、前記第６のミラーの回動との組み合わせにより、原
稿載置面上スリット長手方向に平行な直線と、原稿載置
面上スリット長手方向に平行な直線に直交する直線をそ
れぞれ、前記像担持体上の正規の露光位置に、スリット
長手方向に平行な直線と、スリット長手方向に平行な直
線に直交する直線として結像させるように構成したこと
を特徴としている。Further, in the optical system adjusting device for a copying machine according to the second aspect of the present invention, the original stacking table, the image carrier, the slit elongated in the sub-scanning direction, and the slit extending in the sub-scanning direction are integrally formed in the main scanning direction. The first mirror, which is movable, is rotatable about one end of the mirror longitudinal direction with respect to the optical axis or its vicinity as a fulcrum, and the other end is displaceable in a direction substantially perpendicular to the document placing surface. Moving at a slower speed, the first
And a lens for forming an image of the reflected light from the first roof type mirror, in which the two reflecting surfaces for reflecting the reflected light from the second mirror again are substantially orthogonal to each other With respect to the optical axis, one end in the mirror longitudinal direction on the same side as the first roof-type mirror or its vicinity can be rotated, and the other end can be displaced in a direction substantially perpendicular to the document mounting surface. A second roof-type mirror that again reflects the light beam emitted from the lens, and the reflected light from the second roof-type mirror is reflected again to guide it to the image carrier, and in the reflecting surface in the slit longitudinal direction. A sixth mirror rotatable about a parallel straight line, and one end of the first roof type mirror and one end of the second roof type mirror are substantially perpendicular to the document placing surface. By combining the displacement in the direction and the rotation of the sixth mirror, the slip on the document placement surface is combined. A straight line parallel to the longitudinal direction and a straight line orthogonal to the straight line parallel to the slit longitudinal direction on the document placement surface are respectively placed at the regular exposure positions on the image carrier, and the straight line parallel to the slit longitudinal direction and the slit longitudinal direction. It is characterized in that the image is formed as a straight line orthogonal to a straight line parallel to the direction.
【０００８】[0008]
【作用】請求項１及び請求項２記載の発明では、第１の
屋根型鏡の一端と第２の屋根型鏡の一端を原稿載置面に
対して略垂直な方向に変位させスリット長手方向に平行
な直線を調整し、次に第６のミラーを回動させスリット
長手方向に平行な直線に直交する直線を調整し、この第
６のミラーを回動による調整によって生じるスリット長
手方向に平行な直線の位置ずれを、第１の屋根型鏡の一
端と第２の屋根型鏡の一端を原稿載置面に対して略垂直
な方向に変位させて調整し、原稿載置面上スリット長手
方向に平行な直線と、原稿載置面上スリット長手方向に
平行な直線に直交する直線をそれぞれ、前記像担持体上
の正規の露光位置に、スリット長手方向に平行な直線
と、スリット長手方向に平行な直線に直交する直線とし
て結像させ、簡単な構成で、結像のゆがみや位置ずれを
正確に調整することができる。According to the first and second aspects of the present invention, one end of the first roof type mirror and one end of the second roof type mirror are displaced in a direction substantially perpendicular to the document mounting surface, and a slit longitudinal direction is obtained. The straight line parallel to the slit longitudinal direction, and then the sixth mirror is rotated to adjust the straight line orthogonal to the straight line parallel to the slit longitudinal direction, and the sixth mirror is parallel to the slit longitudinal direction generated by the rotation adjustment. The straight line position is adjusted by displacing one end of the first roof type mirror and one end of the second roof type mirror in a direction substantially perpendicular to the document placing surface, and adjusting the slit length on the document placing surface. A straight line parallel to the direction and a straight line orthogonal to the straight line parallel to the slit longitudinal direction on the document mounting surface at the regular exposure position on the image carrier, and the straight line parallel to the slit longitudinal direction and the slit longitudinal direction. Image as a straight line orthogonal to a straight line parallel to In adult, the distortion and displacement of the imaging can be accurately adjusted.
【０００９】[0009]
【実施例】以下、この発明の複写機の光学系調整方法及
び複写機の光学系調整装置の実施例を図面に基づいて詳
細に説明する。Embodiments of an optical system adjusting method for a copying machine and an optical system adjusting device for a copying machine according to the present invention will be described below in detail with reference to the drawings.
【００１０】図１は複写機の光学系の概略構成図であ
る。複写機１は、原稿積載台２の載置された原稿載置面
２ａの原稿３の画像を、光学系４により像担持体５に結
像する。光学系４は、主走査方向に細長く伸びるスリッ
ト６と、このスリット６と一体的に主走査方向に移動す
る第１のミラー７と、この第１のミラー７より遅い速度
で移動し、第１のミラー７からの反射光を再度反射する
ための２つの反射面が略直交するように構成した第１の
屋根型鏡８と、この第１の屋根型鏡８からの反射光を結
像させるためのレンズ９と、このレンズ９から射出され
た光線を再度反射する第２の屋根型鏡１０と、この第２
の屋根型鏡１０からの反射光を再度反射し像担持体５に
導く第６のミラー１１とを備え、原稿積載台２に載置さ
れた原稿３の画像を像担持体５に結像するように構成さ
れている。FIG. 1 is a schematic configuration diagram of an optical system of a copying machine. The copying machine 1 forms an image of the document 3 on the document mounting surface 2 a on which the document stacking table 2 is mounted on the image carrier 5 by the optical system 4. The optical system 4 includes a slit 6 elongated in the main scanning direction, a first mirror 7 that moves integrally with the slit 6 in the main scanning direction, and a slower speed than the first mirror 7 to move the first mirror 7. The first roof type mirror 8 configured such that the two reflection surfaces for reflecting the reflected light from the second mirror 7 again are substantially orthogonal to each other, and the reflected light from the first roof type mirror 8 is imaged. Lens 9 for this purpose, a second roof mirror 10 for reflecting again the light rays emitted from this lens 9, and this second
And a sixth mirror 11 that reflects the reflected light from the roof-type mirror 10 again and guides it to the image carrier 5. The image of the document 3 placed on the document stacking table 2 is formed on the image carrier 5. Is configured.
【００１１】即ち、第１のミラー７は、原稿走査時にス
リット６と共に、矢印Ａで示す副走査方向に移動する。
第１の屋根型鏡８は、第１のミラー７に対し１／２の速
度で第１のミラー７と同方向に移動し、第１のミラー７
からの反射光を再度反射するものであり、互いに９０゜
をなす２枚の反射鏡８ａ，８ｂにより構成される。レン
ズ９は、第１の屋根型鏡８からの反射光を像担持体５に
結像する。第２の屋根型鏡１０は、倍率変換時等に光軸
方向に移動しレンズ９から射出された光線を再度反射す
るためのミラーであり、互いに９０゜をなす２枚の反射
鏡１０ａ，１０ｂより構成される。第６のミラー１１は
第２の屋根型鏡１０からの光線を像坦持体５に導く。That is, the first mirror 7 moves together with the slit 6 in the sub-scanning direction indicated by the arrow A when scanning the document.
The first roof type mirror 8 moves in the same direction as the first mirror 7 at a speed half that of the first mirror 7, and the first mirror 7
It reflects the reflected light from the beam again and is composed of two reflecting mirrors 8a and 8b forming 90 ° with each other. The lens 9 forms an image of the reflected light from the first roof mirror 8 on the image carrier 5. The second roof mirror 10 is a mirror that moves in the optical axis direction when the magnification is changed and reflects the light beam emitted from the lens 9 again, and includes two reflecting mirrors 10a and 10b forming 90 ° with each other. It is composed of The sixth mirror 11 guides the light beam from the second roof mirror 10 to the image carrier 5.
【００１２】図２は第１の屋根型鏡の構成図である。第
１の屋根型鏡８の互いに９０゜をなす２枚の反射鏡８
ａ，８ｂは、一対の側板８ｃ，８ｄにより保持される。
側板８ｃは摺動軸８ｅ上を原稿走査に伴い移動する第１
の摺動部材８ｆに支持される。側板８ｄには原稿載置面
に対して略垂直方向の調整機構８ｇが取り付けられてお
り、この調整機構８ｇの調整ネジ８ｈは図示されない摺
動軸８ｅと平行な平面の上を移動する。この調整ネジ８
ｈを締め込むあるいは戻すことによって第１の屋根型鏡
８は、摺動軸８ｅを中心とした回動が可能であり、光軸
に関してミラー長手方向の一端部またはその近傍を支点
として回動可能とし他端部を原稿載置面に略垂直な方向
に変位可能に構成されている。FIG. 2 is a block diagram of the first roof mirror. Two reflecting mirrors 8 forming 90 ° to each other of the first roof type mirror 8
The a and 8b are held by the pair of side plates 8c and 8d.
The side plate 8c moves on the sliding shaft 8e as the document is scanned.
Supported by the sliding member 8f. The side plate 8d is attached with an adjusting mechanism 8g in a direction substantially perpendicular to the document mounting surface, and the adjusting screw 8h of the adjusting mechanism 8g moves on a plane parallel to a sliding shaft 8e (not shown). This adjustment screw 8
The first roof mirror 8 can be rotated about the sliding shaft 8e by tightening or returning h, and can be rotated about one end of the mirror longitudinal direction with respect to the optical axis or its vicinity as a fulcrum. The other end is configured to be displaceable in a direction substantially perpendicular to the document mounting surface.
【００１３】図３は第２の屋根型鏡の構成図である。第
２の屋根型鏡１０の互いに９０゜をなす２枚の反射鏡１
０ａ，１０ｂは、一対の側板１０ｃ，１０ｄにより保持
される。側板１０ｃは摺動軸１０ｅ上を原稿走査に伴い
移動する第２の摺動部材１０ｆに支持される。側板１０
ｄには原稿載置面に対して略垂直方向の調整機構１０ｇ
が取り付けられており、この調整機構１０ｇの調整ネジ
１０ｈは図示されない摺動軸１０ｅと平行な平面の上を
移動する。この調整ネジ１０ｈを締め込むあるいは戻す
ことによって第２の屋根型鏡１０は、摺動軸１０ｅを中
心とした回動が可能であり、光軸に関して第１の屋根型
鏡８と同一側のミラー長手方向の一端部またはその近傍
を支点として回動可能とし他端部を原稿載置面に略垂直
な方向に変位可能に構成されている。FIG. 3 is a block diagram of the second roof mirror. Two reflectors 1 of the second roof type mirror 10 forming 90 ° with each other
0a and 10b are held by a pair of side plates 10c and 10d. The side plate 10c is supported by a second sliding member 10f that moves on the sliding shaft 10e as the document is scanned. Side plate 10
In d, an adjusting mechanism 10g in a direction substantially perpendicular to the original placement surface is provided.
The adjusting screw 10h of the adjusting mechanism 10g moves on a plane parallel to the sliding shaft 10e (not shown). The second roof mirror 10 can be rotated around the sliding shaft 10e by tightening or returning the adjusting screw 10h, and the mirror on the same side as the first roof mirror 8 with respect to the optical axis. It is configured such that one end in the longitudinal direction or the vicinity thereof can be rotated as a fulcrum, and the other end can be displaced in a direction substantially perpendicular to the document mounting surface.
【００１４】図４は第６のミラー組立体の構成を示す図
である。第６のミラー１１は、ミラー保持部材１１ａに
支持され、このミラー保持部材１１ａは第６のミラー１
１の反射面内にありスリット長手方向に平行な直線であ
る回転中心１１ｂを中心とし、ミラー台１１ｃに設けら
れたバネ１１ｄにより常に矢印Ｂの方向ヘ付勢されてい
る。ミラー台１１ｃに設けられた調整ネジ１１ｅを締め
込むあるいは戻すことにより、第６のミラー１１は回転
中心１１ｂを中心に回動し、像担持体５ヘの入射角度を
変化させる。FIG. 4 is a diagram showing the structure of the sixth mirror assembly. The sixth mirror 11 is supported by the mirror holding member 11 a, and the mirror holding member 11 a is the sixth mirror 1.
The center of rotation 11b, which is a straight line parallel to the slit longitudinal direction in the first reflecting surface, is always urged in the direction of arrow B by a spring 11d provided on the mirror base 11c. By tightening or returning the adjusting screw 11e provided on the mirror base 11c, the sixth mirror 11 rotates about the rotation center 11b, and the incident angle to the image carrier 5 is changed.
【００１５】次に、複写機の光学系調整の手順を、図５
乃至図９に基づいて説明する。Next, the procedure for adjusting the optical system of the copying machine will be described with reference to FIG.
It will be described with reference to FIG.
【００１６】複写機の光学系調整は、原稿載置面２ａ上
のスリット長手方向に平行でスリット幅方向に関し略
スリット中央に引かれた１本の直線Ｌ１、スリット長
手方向に直交しスリット長さ方向に関しスリット両端部
に引かれた２本の直線Ｌ２，Ｌ３を像担持体５上に結像
された様子を観察し、前記第１の屋根型鏡８の一端の垂
直方向の調整と、第２の屋根型鏡１０の一端の垂直方向
の調整と、第６のミラー１１の回動による調整との３箇
所の調整機構により行なう。The optical system of the copying machine is adjusted by a straight line L1 which is parallel to the slit longitudinal direction on the original placing surface 2a and is drawn substantially at the slit center in the slit width direction, and a slit length orthogonal to the slit longitudinal direction. The two straight lines L2 and L3 drawn at both ends of the slit in the direction are observed to be imaged on the image carrier 5, and one end of the first roof mirror 8 is adjusted in the vertical direction, and The adjustment is performed by three adjusting mechanisms, that is, the adjustment of one end of the second roof mirror 10 in the vertical direction and the adjustment by rotating the sixth mirror 11.
【００１７】複写機では、第１の屋根型鏡８、第２の屋
根型鏡１０及び第６のミラー１１等の製作上の誤差や組
付上の誤差等によって、原稿載置面２ａ上スリット長手
方向に平行な直線Ｌ１やスリット長手方向に平行な直線
Ｌ１に直交する直線Ｌ２，Ｌ３が、像担持体５上の正規
の露光位置に結像されないで、ゆがみや位置ずれが生じ
ることがあり、３本の直線Ｌ１，Ｌ２，Ｌ３の結像状態
を観察すると、例えば図６（ａ）のようになっていると
仮定する。In the copying machine, the slits on the document placing surface 2a are caused by the manufacturing error and the assembly error of the first roof type mirror 8, the second roof type mirror 10 and the sixth mirror 11. The straight line L1 parallel to the longitudinal direction and the straight lines L2 and L3 orthogonal to the straight line L1 parallel to the slit longitudinal direction may not be imaged at the regular exposure positions on the image carrier 5 and may be distorted or misaligned. When observing the image formation state of the three straight lines L1, L2, L3, it is assumed that, for example, it is as shown in FIG. 6 (a).
【００１８】まず、第１の屋根型鏡８の一端を、原稿載
置面２ａに対して略垂直な方向に変位させてスリット長
手方向に平行な直線Ｌ１の像Ｌ１ａの後側を調整し、第
２の屋根型鏡１０の一端を、原稿載置面２ａに対して略
垂直な方向に変位させてスリット長手方向に平行な直線
Ｌ１の像Ｌ１ａの前側を調整し、スリット長手方向に平
行な直線Ｌ１の像Ｌ１ａを、図６（ｂ）に示すようにス
リット枠２０のスリット中心線である本来結像されるべ
き直線Ｌ４に合わせる主走査方向の位置調整を行う。First, one end of the first roof type mirror 8 is displaced in a direction substantially perpendicular to the document mounting surface 2a to adjust the rear side of the image L1a of the straight line L1 parallel to the slit longitudinal direction, One end of the second roof mirror 10 is displaced in a direction substantially perpendicular to the document placing surface 2a to adjust the front side of the image L1a of the straight line L1 parallel to the slit longitudinal direction, and to be parallel to the slit longitudinal direction. The position L in the main scanning direction is adjusted so that the image L1a of the straight line L1 is aligned with the straight line L4 to be originally imaged, which is the slit center line of the slit frame 20 as shown in FIG. 6B.
【００１９】次に、スリット長手方向に直交する直線Ｌ
２，Ｌ３の結像状態を観察する。このとき、図６（ｂ）
のようにスリット長手方向の直線Ｌ１はスリット中心線
の本来結像されるべき直線の像Ｌ４上に位置するが、原
稿載置面２ａ上スリット長手方向に直交する本来平行で
あるべき直線Ｌ２ｂ，Ｌ３ｂに対し、実際の像Ｌ２ａ，
Ｌ３ａのように平行でない直線として結像していた場
合、図６（ｃ）のように第６のミラー１１の回動により
互いにほぼ平行になるように調整を行う。Next, a straight line L orthogonal to the slit longitudinal direction
Observe the image formation states of L2 and L3. At this time, FIG.
As described above, the straight line L1 in the slit longitudinal direction is located on the image L4 of the straight line to be originally formed of the slit center line, but the straight line L2b orthogonal to the longitudinal direction of the slit on the document mounting surface 2a should be originally parallel, For L3b, the actual image L2a,
When the images are formed as straight lines that are not parallel to each other as in L3a, adjustment is performed so that they are substantially parallel to each other by rotating the sixth mirror 11 as shown in FIG. 6C.
【００２０】ここで、本来平行であるべき直線が平行に
ならない理由を図７に従い説明する。まず、像担持体５
が図７（ａ）のように円筒状である場合、反射鏡等の位
置、角度に誤差がなければ第６のミラー１１により反射
された光軸光線の延長線ａは円筒の中心ｏを通過する。
しかし、反射鏡等の位置、角度に誤差がある場合、この
延長線ｂが円中心ｏを通過しない揚合がある。すると、
像担持体５上の露光部の円周方向に関して光路長の差を
生じ、倍率の差となって現れる。実使用上においては原
稿走査に伴い露光され始めと終わりで結像点がズレるた
め点が点にならないという不具合となって現れる。Here, the reason why straight lines which should originally be parallel are not parallel will be described with reference to FIG. First, the image carrier 5
7 is a cylindrical shape as shown in FIG. 7A, the extension line a of the optical axis ray reflected by the sixth mirror 11 passes through the center o of the cylinder unless there is an error in the position and angle of the reflecting mirror or the like. To do.
However, if there is an error in the position or angle of the reflecting mirror or the like, there is a case where the extension line b does not pass through the center o of the circle. Then
A difference in optical path length occurs in the circumferential direction of the exposed portion on the image carrier 5, and the difference appears in magnification. In actual use, the image formation point shifts between the beginning and the end of exposure as the document is scanned, and the point does not become a point.
【００２１】また、図７（ｂ）のように像担持体５が結
像点において平面である場合、反射鏡等の位置、角度に
誤差がなければ、第６のミラー１１により反射された光
線は像担持体５の平面に対して直角に入射する。しか
し、反射鏡等の位置、角度に誤差があると、この入射光
は像担持体５の平面に対して直角をなさず、円筒状の像
担持体５の場合と同様の不具合が発生する。Further, when the image carrier 5 is a plane at the image forming point as shown in FIG. 7B, if there is no error in the position and the angle of the reflecting mirror or the like, the light beam reflected by the sixth mirror 11 Enters at a right angle to the plane of the image carrier 5. However, if there is an error in the position or angle of the reflecting mirror or the like, this incident light does not form a right angle with the plane of the image carrier 5, and the same problem as in the case of the cylindrical image carrier 5 occurs.
【００２２】第６のミラー１１による調整を行うと、図
６（ｃ）に示すように原稿載置面２ａ上に引かれたスリ
ット長手方向に平行な直線Ｌ１の像Ｌ１ａは、像担持体
５上において本来結像されるベき直線の像Ｌ４に対しズ
レを生じる。When the adjustment by the sixth mirror 11 is performed, the image L1a of the straight line L1 parallel to the slit longitudinal direction drawn on the document placing surface 2a as shown in FIG. A deviation occurs with respect to the originally straight image L4 that is originally formed.
【００２３】そこで、第１の屋根型鏡８の略垂直方向の
調整機構が前側にある場合、図６（ｄ）に示すように、
第１の屋根型鏡８の略垂直方向の調整により、スリット
長手方向に平行な直線Ｌ１の像Ｌ１ａとスリット長手方
向に直交する直線Ｌ２の像Ｌ２ａの交点ｇ１を、本来結
像されるベき直線の像Ｌ４とスリット長手方向に直交す
る直線Ｌ２の像Ｌ２ａの交点ｈ１ヘ移動させる。ここ
で、第１の屋根型鏡８は像担持体５との間にレンズ９を
介しているので前側の調整機構を変位させることで光軸
に関して反対側にある交点ｇ１の像が移動する。Therefore, when the adjusting mechanism in the substantially vertical direction of the first roof mirror 8 is on the front side, as shown in FIG. 6 (d),
By adjusting the first roof type mirror 8 in a substantially vertical direction, the intersection point g1 between the image L1a of the straight line L1 parallel to the slit longitudinal direction and the image L2a of the straight line L2 orthogonal to the slit longitudinal direction should be originally imaged. It is moved to the intersection point h1 of the image L2a of the straight line image L4 and the straight line L2 orthogonal to the slit longitudinal direction. Here, since the first roof type mirror 8 has the lens 9 between it and the image carrier 5, the image at the intersection g1 on the opposite side with respect to the optical axis moves by displacing the adjustment mechanism on the front side.
【００２４】また、第１の屋根型鏡８の調整機構により
交点ｇ１が移動する仕組みを図８に示す。第１の屋根型
鏡８を略垂直方向に変位させると、像担持体５上の結像
点が移動する。ここで、垂直方向の変位は調整機構を持
つ片側にのみ起こるので、第１の屋根型鏡８の調整によ
る像の移動は交点ｇ１の側にのみ起こる。FIG. 8 shows a mechanism in which the intersection g1 is moved by the adjusting mechanism of the first roof mirror 8. When the first roof mirror 8 is displaced in a substantially vertical direction, the image forming point on the image carrier 5 moves. Here, since the displacement in the vertical direction occurs only on one side having the adjusting mechanism, the movement of the image due to the adjustment of the first roof mirror 8 occurs only on the side of the intersection point g1.
【００２５】すると、図６（ｄ）に示すように結像され
たスリット長手方向に平行な直線Ｌ１の像Ｌ１ａは本来
結像されるべき直線の像Ｌ４に対し平行でなくなる。そ
こで、前側にある第２の屋根型鏡１０の略垂直方向の調
整機構によりスリット長手方向に平行な直線Ｌ１の像Ｌ
１ａとスリット長手方向に直交する直線Ｌ３の像Ｌ３ａ
の交点ｇ２を、本来結像されるベき直線の像Ｌ４とスリ
ット長手方向に直交する直線Ｌ３の像Ｌ３ａの交点ｈ２
ヘ移動させる。ここで、第２の屋根型鏡１０は像担持体
５との間にレンズ９を介していないので、前側の調整機
構を変位させることで光軸に関して同じ側にある交点ｇ
２の像が移動する。Then, as shown in FIG. 6 (d), the image L1a of the straight line L1 formed in parallel with the longitudinal direction of the slit is not parallel to the image L4 of the straight line to be originally formed. Therefore, the image L of the straight line L1 parallel to the slit longitudinal direction is adjusted by the adjusting mechanism in the substantially vertical direction of the second roof type mirror 10 on the front side.
1a and an image L3a of a straight line L3 orthogonal to the slit longitudinal direction
The intersection point h2 between the image L4a of the straight line L3a which is originally formed and the image L3a of the straight line L3 orthogonal to the slit longitudinal direction.
Move to F. Here, since the second roof mirror 10 does not have the lens 9 between it and the image carrier 5, by displacing the adjustment mechanism on the front side, the intersection point g on the same side with respect to the optical axis
The two images move.
【００２６】また、第２の屋根型鏡１０の調整機構によ
り交点ｇ２が移動する仕組みを図９に示す。第２の屋根
型鏡１０を略垂直方向に変位させると、像担持体５上の
結像点が移動する。ここで、第２の屋根型鏡１０の略垂
直方向の変位は、調整機構を持つ片側にのみ起こるので
第２の屋根型鏡１０の調整による像の移動は交点ｇ２の
側にのみ起こる。この一連の調整を繰り返すことにより
原稿載置面２ａ上でスリット長手方向に平行な直線Ｌ１
と、これに直交する直線Ｌ２，Ｌ３をそれぞれ実使用上
間題にならない程度で、像担持体５上のほぼ正規の位置
にほぼ平行な直線の像Ｌ１ａと、これにほぼ直交する直
線の像Ｌ２ａ，Ｌ３ａとして結像することができる。FIG. 9 shows a mechanism in which the intersection point g2 is moved by the adjusting mechanism of the second roof mirror 10. When the second roof mirror 10 is displaced in the substantially vertical direction, the image forming point on the image carrier 5 moves. Here, since the displacement of the second roof mirror 10 in the substantially vertical direction occurs only on one side having the adjusting mechanism, the image movement due to the adjustment of the second roof mirror 10 occurs only on the side of the intersection point g2. By repeating this series of adjustments, a straight line L1 parallel to the slit longitudinal direction is formed on the document placing surface 2a.
And the straight lines L2 and L3 orthogonal to this line image L1a substantially parallel to the substantially normal position on the image carrier 5 and the straight line image substantially orthogonal thereto, to the extent that they do not pose a problem in actual use. Images can be formed as L2a and L3a.
【００２７】[0027]
【発明の効果】前記したように、請求項１及び請求項２
記載の発明では、第１の屋根型鏡の一端と第２の屋根型
鏡の一端を原稿載置面に対して略垂直な方向に変位させ
スリット長手方向に平行な直線を調整し、次に第６のミ
ラーを回動させスリット長手方向に平行な直線に直交す
る直線を調整し、この第６のミラーを回動による調整に
よって生じるスリット長手方向に平行な直線の位置ずれ
を、第１の屋根型鏡の一端と第２の屋根型鏡の一端を原
稿載置面に対して略垂直な方向に変位させて調整し、原
稿載置面上スリット長手方向に平行な直線と、原稿載置
面上スリット長手方向に平行な直線に直交する直線をそ
れぞれ、前記像担持体上の正規の露光位置に、スリット
長手方向に平行な直線と、スリット長手方向に平行な直
線に直交する直線として結像させるから、簡単な構成
で、結像のゆがみや位置ずれを正確に調整することがで
きる。As described above, the first and second aspects are provided.
In the invention described above, one end of the first roof type mirror and one end of the second roof type mirror are displaced in a direction substantially perpendicular to the document placement surface to adjust a straight line parallel to the slit longitudinal direction, and then, The sixth mirror is rotated to adjust a straight line orthogonal to the straight line parallel to the slit longitudinal direction, and the positional deviation of the straight line parallel to the slit longitudinal direction caused by the rotation adjustment of the sixth mirror is adjusted to the first position. The one end of the roof type mirror and the one end of the second roof type mirror are adjusted by displacing them in a direction substantially perpendicular to the document placing surface, and a straight line parallel to the slit longitudinal direction on the document placing surface and the document placing A straight line perpendicular to the straight line parallel to the slit longitudinal direction is connected to the regular exposure position on the image carrier as a straight line parallel to the slit longitudinal direction and a straight line orthogonal to the straight line parallel to the slit longitudinal direction. Since the image is formed, the distortion of the image can be reduced with a simple configuration. It is possible to precisely adjust the location shift.
【図１】複写機の光学系の概略構成図である。FIG. 1 is a schematic configuration diagram of an optical system of a copying machine.
【図２】第１の屋根型鏡の構成図である。FIG. 2 is a configuration diagram of a first roof mirror.
【図３】第２の屋根型鏡の構成図である。FIG. 3 is a configuration diagram of a second roof mirror.
【図４】第６のミラー組立体の構成を示す図である。FIG. 4 is a diagram showing a configuration of a sixth mirror assembly.
【図５】複写機の光学系調整を示す斜視図である。FIG. 5 is a perspective view showing adjustment of an optical system of a copying machine.
【図６】複写機の光学系調整の手順を示す図である。FIG. 6 is a diagram showing a procedure of adjusting an optical system of a copying machine.
【図７】本来平行であるべき直線が平行にならない理由
を説明する図である。FIG. 7 is a diagram illustrating the reason why straight lines that should originally be parallel are not parallel.
【図８】第１の屋根型鏡の調整機構により交点が移動す
る仕組みを説明する図である。FIG. 8 is a diagram illustrating a mechanism in which an intersection is moved by the adjusting mechanism of the first roof mirror.
【図９】第２の屋根型鏡の調整機構により交点が移動す
る仕組みを説明する図である。FIG. 9 is a diagram illustrating a mechanism in which an intersection moves by a second roof mirror adjustment mechanism.
２ 原稿積載台 ５ 像担持体 ６ スリット ７ 第１のミラー ８ 第１の屋根型鏡 ９ レンズ １０ 第２の屋根型鏡 １１ 第６のミラー 2 Document Loading Table 5 Image Carrier 6 Slit 7 First Mirror 8 First Roof Mirror 9 Lens 10 Second Roof Mirror 11 Sixth Mirror
Claims (2)
細長く伸びるスリットと、このスリットと一体的に主走
査方向に移動する第１のミラーと、光軸に関してミラー
長手方向の一端部またはその近傍を支点として回動可能
とし他端部を原稿載置面に略垂直な方向に変位可能で、
前記第１のミラーより遅い速度で移動し、前記第１のミ
ラーからの反射光を再度反射するための２つの反射面が
略直交するように構成した第１の屋根型鏡と、この第１
の屋根型鏡からの反射光を結像させるためのレンズと、
光軸に関して第１の屋根型鏡と同一側のミラー長手方向
の一端部またはその近傍を支点として回動可能とし他端
部を原稿載置面に略垂直な方向に変位可能で、前記レン
ズから射出された光線を再度反射する第２の屋根型鏡
と、この第２の屋根型鏡からの反射光を再度反射し前記
像担持体に導き、かつその反射面内でスリット長手方向
に平行な直線を中心に回動可能とした第６のミラーとを
備え、前記第１の屋根型鏡の一端と前記第２の屋根型鏡
の一端を前記原稿載置面に対して略垂直な方向に変位さ
せスリット長手方向に平行な直線を調整し、次に前記第
６のミラーを回動させスリット長手方向に平行な直線に
直交する直線を調整し、この第６のミラーを回動による
調整によって生じるスリット長手方向に平行な直線の位
置ずれを、前記第１の屋根型鏡の一端と前記第２の屋根
型鏡の一端を前記原稿載置面に対して略垂直な方向に変
位させて調整し、原稿載置面上スリット長手方向に平行
な直線と、原稿載置面上スリット長手方向に平行な直線
に直交する直線をそれぞれ、前記像担持体上の正規の露
光位置に、スリット長手方向に平行な直線と、スリット
長手方向に平行な直線に直交する直線として結像させる
ことを特徴とする複写機の光学系調整方法。1. A document stacking table, an image carrier, a slit elongated in the sub-scanning direction, a first mirror movable in the main scanning direction integrally with the slit, and one end in the mirror longitudinal direction with respect to the optical axis. Part or its vicinity can be rotated as a fulcrum, and the other end can be displaced in a direction substantially perpendicular to the document mounting surface,
A first roof mirror configured to move at a speed slower than that of the first mirror and configured so that two reflecting surfaces for reflecting the reflected light from the first mirror again are substantially orthogonal to each other;
A lens for focusing the reflected light from the roof mirror of
With respect to the optical axis, one end in the longitudinal direction of the mirror on the same side as the first roof-type mirror or the vicinity thereof can be rotated, and the other end can be displaced in a direction substantially perpendicular to the document mounting surface. A second roof-type mirror that reflects the emitted light again, and a light reflected from the second roof-type mirror is reflected again and guided to the image carrier, and is parallel to the slit longitudinal direction in the reflecting surface. A sixth mirror rotatable about a straight line, wherein one end of the first roof type mirror and one end of the second roof type mirror are arranged in a direction substantially perpendicular to the document placing surface. By displacing and adjusting a straight line parallel to the slit longitudinal direction, then rotating the sixth mirror to adjust a straight line orthogonal to the straight line parallel to the slit longitudinal direction, and adjusting the sixth mirror by rotating. The generated positional deviation of the straight line parallel to the longitudinal direction of the slit is The one end of the roof mirror and the one end of the second roof mirror are adjusted by displacing them in a direction substantially perpendicular to the document placement surface, and a straight line parallel to the slit longitudinal direction on the document placement surface and the document A straight line orthogonal to a straight line parallel to the slit longitudinal direction on the mounting surface, respectively, at a regular exposure position on the image carrier, a straight line parallel to the slit longitudinal direction and a straight line orthogonal to the straight line parallel to the slit longitudinal direction. A method for adjusting an optical system of a copying machine, which is characterized by forming an image.
細長く伸びるスリットと、このスリットと一体的に主走
査方向に移動する第１のミラーと、光軸に関してミラー
長手方向の一端部またはその近傍を支点として回動可能
とし他端部を原稿載置面に略垂直な方向に変位可能で、
前記第１のミラーより遅い速度で移動し、前記第１のミ
ラーからの反射光を再度反射するための２つの反射面が
略直交するように構成した第１の屋根型鏡と、この第１
の屋根型鏡からの反射光を結像させるためのレンズと、
光軸に関して第１の屋根型鏡と同一側のミラー長手方向
の一端部またはその近傍を支点として回動可能とし他端
部を原稿載置面に略垂直な方向に変位可能で、前記レン
ズから射出された光線を再度反射する第２の屋根型鏡
と、この第２の屋根型鏡からの反射光を再度反射し前記
像担持体に導き、かつその反射面内でスリット長手方向
に平行な直線を中心に回動可能とした第６のミラーとを
備え、前記第１の屋根型鏡の一端と前記第２の屋根型鏡
の一端を前記原稿載置面に対して略垂直な方向の変位
と、前記第６のミラーの回動との組み合わせにより、原
稿載置面上スリット長手方向に平行な直線と、原稿載置
面上スリット長手方向に平行な直線に直交する直線をそ
れぞれ、前記像担持体上の正規の露光位置に、スリット
長手方向に平行な直線と、スリット長手方向に平行な直
線に直交する直線として結像させるように構成したこと
を特徴とする複写機の光学系調整装置。2. A document stacking table, an image carrier, a slit elongated in the sub-scanning direction, a first mirror that moves integrally with the slit in the main scanning direction, and one end in the mirror longitudinal direction with respect to the optical axis. Part or its vicinity can be rotated as a fulcrum, and the other end can be displaced in a direction substantially perpendicular to the document mounting surface,
A first roof mirror configured to move at a speed slower than that of the first mirror and configured so that two reflecting surfaces for reflecting the reflected light from the first mirror again are substantially orthogonal to each other;
A lens for focusing the reflected light from the roof mirror of
With respect to the optical axis, one end in the longitudinal direction of the mirror on the same side as the first roof-type mirror or the vicinity thereof can be rotated, and the other end can be displaced in a direction substantially perpendicular to the document mounting surface. A second roof-type mirror that reflects the emitted light again, and a light reflected from the second roof-type mirror is reflected again and guided to the image carrier, and is parallel to the slit longitudinal direction in the reflecting surface. A sixth mirror rotatable about a straight line, and one end of the first roof type mirror and one end of the second roof type mirror in a direction substantially perpendicular to the document placing surface. By the combination of the displacement and the rotation of the sixth mirror, a straight line parallel to the slit longitudinal direction on the document placing surface and a straight line orthogonal to the straight line parallel to the slit longitudinal direction on the document placing surface are respectively described above. A straight line parallel to the slit longitudinal direction at the regular exposure position on the image carrier , Optical adjustment device of the copying machine, characterized by being configured so as to form an image as a straight line perpendicular to a line parallel to the slit longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23413194A JPH0876266A (en) | 1994-09-02 | 1994-09-02 | Method and device for adjusting optical system of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23413194A JPH0876266A (en) | 1994-09-02 | 1994-09-02 | Method and device for adjusting optical system of copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0876266A true JPH0876266A (en) | 1996-03-22 |
Family
ID=16966130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23413194A Pending JPH0876266A (en) | 1994-09-02 | 1994-09-02 | Method and device for adjusting optical system of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0876266A (en) |
-
1994
- 1994-09-02 JP JP23413194A patent/JPH0876266A/en active Pending
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