JPS5824167A - Optical scanning and exposing device - Google Patents
Optical scanning and exposing deviceInfo
- Publication number
- JPS5824167A JPS5824167A JP12331881A JP12331881A JPS5824167A JP S5824167 A JPS5824167 A JP S5824167A JP 12331881 A JP12331881 A JP 12331881A JP 12331881 A JP12331881 A JP 12331881A JP S5824167 A JPS5824167 A JP S5824167A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- slit plate
- plates
- opening
- optical scanning
- 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
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)
Abstract
Description
【発明の詳細な説明】 本発明は光学走査露光装置に関する。[Detailed description of the invention] The present invention relates to an optical scanning exposure apparatus.
従来、電子写真等の複写機において、原稿の像を感光体
に投影する所nNjt方式として、原稿と感光体を共に
静止させておき、固定されている光学系により露光する
静止全面露光方式と%Jlli。Conventionally, in electrophotographic copying machines, there have been two methods: the nNjt method, in which the image of an original is projected onto a photoreceptor; the stationary full exposure method, in which both the original and the photoreceptor are kept stationary and exposed using a fixed optical system; Jlli.
感光体、光学系、のいずれかを移動させて露光する走査
露光(スリット露光)方式とがあり、後者には、大別し
て、原稿を静止させ、レンズ等の光学系を移動させる光
学走査露光方式と、光学系を固定し、原稿と感光体を移
動させる原稿走査露光方式とがある。There are scanning exposure (slit exposure) methods in which either the photoreceptor or the optical system is moved to expose the image, and the latter can be broadly divided into optical scanning exposure methods in which the document is held still and optical systems such as lenses are moved. and an original scanning exposure method in which the optical system is fixed and the original and the photoreceptor are moved.
本発明は前記光学走査露光方式の複写機に適用されるも
のである。The present invention is applied to the above-mentioned optical scanning exposure type copying machine.
光学走査霧光方式の複写機の場合に社、光学系の移動位
置、レンズ自身の特性による影曽で感光体上の露光領域
で一様な照度分布を得ることができない。In the case of an optical scanning fog light type copying machine, it is not possible to obtain a uniform illuminance distribution in the exposure area on the photoreceptor due to the effects caused by the moving position of the optical system and the characteristics of the lens itself.
第1図はレンズ移動光学系を使用した時の露光スリット
8と照射光束の関係を示すもので1ム。Figure 1 shows the relationship between the exposure slit 8 and the irradiation light flux when a moving lens optical system is used.
B、Cは原稿りの先端、中央および後端部分の画像を示
す。lx 、 is 、Imは画像部A、B、Cを感光
ドラムE上に投影する場合のし/ズLの移動位置であり
、A、B、Cの光像祉露光スリットSを通して感光ドラ
ムE上のα、h、e各点に投影され、感光ドラムE上に
原画像に対応する静電潜像を形成する。このように感光
ドラムE上に入射する党束社走査の開始から終了までに
ある角度だけし
回転し、原稿暁上の各部分の光像は感光ドラAB上にお
いて異なる領域に入射することになり、その結果感光ド
ラム上の露光領域に照度むらが生じることになる。この
ような光学系の走査位置の変位ばかりでなく、レンズの
C084乗則の影養によって更に感光ドラム上に照度む
らを起す。B and C show images of the leading edge, center, and trailing edge of the manuscript. lx, is, Im are the moving positions of the image areas A, B, and C on the photosensitive drum E, and are the positions where the image areas A, B, and C are projected onto the photosensitive drum E through the exposure slit S. , and forms an electrostatic latent image on the photosensitive drum E corresponding to the original image. In this way, the photosensitive drum E is rotated by a certain angle from the start to the end of scanning, and the light image of each part on the original document is incident on a different area on the photosensitive drum AB. As a result, uneven illuminance occurs in the exposed area on the photosensitive drum. Not only the displacement of the scanning position of the optical system, but also the influence of the C084 power law of the lens further causes uneven illuminance on the photosensitive drum.
このような照度むらを補正するために、従来は、光学フ
ィルターを用いたり、露光スリットを移動させながらス
リット全体を一体的に回動させたりしているが、前者の
方法では光量損失が大きい欠点があや、後者の方法では
構造が複雑になる。Conventionally, to correct such uneven illuminance, an optical filter is used or the entire slit is rotated as a unit while moving the exposure slit, but the disadvantage of the former method is that there is a large loss of light intensity. Unfortunately, the latter method results in a more complicated structure.
本発明は上記欠点を解消し、感光体上のIw元領領域全
体照度むらを補正した光学走査露光装置を提供すること
を目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical scanning exposure apparatus that eliminates the above-mentioned drawbacks and corrects illuminance unevenness throughout the Iw source region on a photoreceptor.
本発明は光学走査露光装置において、投影レンズと感光
体の間に露光用スリット開口を形成するII数個のスリ
ット板を設け、光軸を挾んで少なくとも一方の備のスリ
ット板の開口端を非直線形状にすると共に複数個のスリ
ット板を投影響の移動に対応して移動させ、移動光学系
の走査位置に応じて複数個のスリット板の相対位置を変
化させるようにしたことを特徴とする。The present invention provides an optical scanning exposure apparatus in which several slit plates forming exposure slit openings are provided between a projection lens and a photoreceptor, and the opening end of at least one of the slit plates is set between the optical axis. It is characterized by having a linear shape, moving a plurality of slit plates in accordance with the movement of the projection effect, and changing the relative positions of the plurality of slit plates in accordance with the scanning position of the moving optical system. .
以下本発明を図面に示した具体例により観測する0
第2図社光学走査方式で露光を行なう複写機を示してい
る。1は周速度vで矢印方向に回転する感光ドラム、2
e1原稿であるマイクロフィルム、3Fiマイクロフィ
ル人を照明するランプ、4は集光レンズ、5は投影レン
ズ、6は各々直交する反射縫7.8からなる一体の直角
ミラ一体、13は投影レンズ5と感光ドラム1の間に配
置された光量規制部材である。The present invention will be observed below with reference to a concrete example shown in the drawings. Figure 2 shows a copying machine that performs exposure using an optical scanning method. 1 is a photosensitive drum rotating in the direction of the arrow at a circumferential speed v; 2
e1 original microfilm, 3Fi microfilm lamp for illuminating people, 4 is a condensing lens, 5 is a projection lens, 6 is an integrated right-angled mirror consisting of reflective stitches 7.8 orthogonal to each other, 13 is a projection lens 5 This is a light amount regulating member disposed between the photosensitive drum 1 and the photosensitive drum 1.
感光ドラム1は導電層、光導電層、透明絶縁層を順に重
ねた三層構成感光体からなり、表向に絶縁層を有する。The photosensitive drum 1 is composed of a three-layer photosensitive member in which a conductive layer, a photoconductive layer, and a transparent insulating layer are stacked in this order, and has an insulating layer on the surface.
この感光ドラムは一次帝電器15で一様に帯電され、次
いでAC又は−次帯電器15とは逆極性のDC除電器1
6でマイクロフィルムの画像光を投射しつつ一次帯電電
荷を除電し、次ぃでランプ17で一様に露光され、これ
により投影画像パターンに応じた静電潜像が形成される
。This photosensitive drum is uniformly charged with a primary Teiden charger 15, and then an AC or DC static eliminator 1 with a polarity opposite to that of the negative charger 15 is charged.
6, the primary charge is removed while projecting image light on the microfilm, and then uniform exposure is performed using a lamp 17, thereby forming an electrostatic latent image in accordance with the projected image pattern.
感光ドラム1上の静電潜像は現俸装918によって現偉
された後転写装置19により転写紙20に転写される。The electrostatic latent image on the photosensitive drum 1 is developed by the developing device 918 and then transferred to the transfer paper 20 by the transfer device 19.
ここで、直角ミラ一体6を実線の位置として)マイクロ
フィルム2を投影すると、像aFi光路25を通して除
電器16の開口部に拡大投影され、そして直角ミラ一体
6が矢印方向に一点Mmで示す位置に移動する間にマイ
クロフィルム2の像bFi光路26を通して除電器16
の開口部に拡大投影されることになる。Here, when the microfilm 2 is projected (with the right-angle mirror unit 6 at the position indicated by the solid line), the image is enlarged and projected onto the opening of the static eliminator 16 through the image aFi optical path 25, and the right-angle mirror unit 6 is positioned at a point Mm in the direction of the arrow. The static eliminator 16 passes through the image bFi light path 26 of the microfilm 2 while moving to
The image will be enlarged and projected onto the aperture.
この場合、直角ミラニ体6の移動速度を感光ド一致し、
投影gIh感光ドラムに同期することになる。以上の説
明から感光ドラム1の周速度■と直角ミラ一体6の移動
速度署との関係社レンズ5の投影倍率如何に関係なく一
定であり、レンズ倍率の変更社直角ミラ一体6の速度を
一定として自由ご と
に行なえるF季になる。In this case, the moving speed of the right-angled Milani body 6 is matched with the exposure speed,
The projection gIh will be synchronized with the photosensitive drum. From the above explanation, the circumferential speed of the photosensitive drum 1 and the moving speed of the right-angle mirror unit 6 are constant regardless of the projection magnification of the lens 5, and the speed of the right-angle mirror unit 6 is constant regardless of the projection magnification of the lens 5. It will be a F season where you can do it as you like.
第3図F1党量規制部材の構成を示すもので、光量規制
部材16#i露党用スリット開口を形成する1対のスリ
ット板3o・51を有し、この1対のスリット板50−
31は投影像の移動に同期してに配置されていて、第1
スリツト板3oと一体的に矢印方向に移動し、かつ支点
32を中心として回動し、移動時第1スリツト板3oの
開口を出入りする。第2スリツト板31が支点32を中
心として回動すると第1スリツト板5oの開口端30m
と第2スリツト板31の先端31mの間隔が変化し、こ
れにより1対のスリット板50−51によって形成され
るスリット開口の大きさが制御される。なお、各スリッ
ト板30・31を複数に分割し、これらを個々に調整可
能とし、光軸を挾んで両側のスリット板の相対位置を変
化させてもよい。FIG. 3 shows the structure of the light amount regulating member F1, which has a pair of slit plates 3o and 51 forming a slit opening for the exposure light amount regulating member 16#i, and this pair of slit plates 50-
31 is arranged in synchronization with the movement of the projected image, and the first
It moves integrally with the slit plate 3o in the direction of the arrow, rotates about the fulcrum 32, and moves in and out of the opening of the first slit plate 3o. When the second slit plate 31 rotates around the fulcrum 32, the opening end 30m of the first slit plate 5o
The distance between the tips 31m of the second slit plates 31 changes, thereby controlling the size of the slit opening formed by the pair of slit plates 50-51. Note that each of the slit plates 30 and 31 may be divided into a plurality of parts, each of which can be adjusted individually, and the relative positions of the slit plates on both sides of the optical axis may be changed.
スリット板30−31の端部50a・31a社、感光ド
ラム1上の露光領域でスリット長手方向の照度分布を一
様にするため、スリット長手方向に関し非直線の形状を
有する。The ends 50a and 31a of the slit plates 30-31 have a non-linear shape in the longitudinal direction of the slit in order to make the illuminance distribution in the longitudinal direction of the slit uniform in the exposure area on the photosensitive drum 1.
33は第2スリツト板31の背面に設けたコロ134は
第2スリツト板31の回動を制御するカム面を示し、こ
のコロ33II′i1対のスリット板60・61が矢〜
方向に移動するときカム面54に沿って移動し、カム面
の形状に応じて第2スリツト板31が回動する。カム面
34は投影光路を御所しない位置に配置されると共に、
移動方向と直交する方向に長い第2スリツト板61の回
動をスムーズに行なうため、スリット板61の長手方向
の両端側にそれぞれ設けられる。A roller 134 provided on the back surface of the second slit plate 31 is a cam surface that controls the rotation of the second slit plate 31.
When moving in the direction, the second slit plate 31 moves along the cam surface 54 and rotates according to the shape of the cam surface. The cam surface 34 is arranged at a position that does not interfere with the projection optical path, and
In order to smoothly rotate the second slit plate 61, which is long in the direction perpendicular to the moving direction, the second slit plate 61 is provided at both longitudinal ends of the slit plate 61, respectively.
スリット板50@31の移動速度は投影像の一動速度す
なわち感光ドラム1の移動速度に比例し、直角ミラ一体
6の移動に同期する。The moving speed of the slit plate 50@31 is proportional to the moving speed of the projected image, that is, the moving speed of the photosensitive drum 1, and is synchronized with the movement of the right-angle mirror unit 6.
40・41・42社マイクロフィルム2の投影健の先端
、中央、後端め主光線を示し、光量規制部#13o□4
.□オ、。 1第3図において%1体のス
リット板30・31Fi移動時、実線位置すなわち主光
線40の光束を制御すべき位置にあるとき第1スリツト
板の端部3Qaと第2スリツト板の端部31aとで形成
されたスリット開口(画スリット板の端部によって囲ま
れた平面)50が主光線40に対してほぼ直角関係にな
り、また一点鎖線位置すなわち主光線41の光束を制御
すべき位置にあるとき端部30mと端[511とで形成
されたスリット開口51が主光線51に対してはげ直角
関係になり、さらに破線位置すなわち主光線42の光束
を制御すべき位置にあるとき端部30aと端部31aと
で形成されたスリット開口52が主光線52に対してほ
ぼ直角関係になるようにカム面により第2スリツト板6
1の回動が制御される。カム面の形状は第2スリツト板
の回動により光学系の走査位置およびレンズの特性など
による影響を補正して走査方向の照度分布を一様圧する
ように設電される。スリット板30・31によって形成
されるスリット開口の大きさは投影レンズの光軸付近の
光束に比べて感光ドラムに対して主光線が傾斜する光束
を拡げるように変化する。すなわち光軸付近の輝度に合
うように元軸劉辺の輝度を補正し、これにより照肢を損
失することな(走査方向に関し一様な照度分布を4るこ
とができる。40/41/42 microfilm 2 projection head, center, rear end principal rays are shown, light amount regulating part #13o□4
.. □Oh. 1 In FIG. 3, when the slit plates 30 and 31Fi of %1 are moved, when they are at the solid line position, that is, the position where the luminous flux of the principal ray 40 should be controlled, the end 3Qa of the first slit plate and the end 31a of the second slit plate The slit aperture 50 (a plane surrounded by the edges of the image slit plate) formed by the above is approximately perpendicular to the principal ray 40, and is located at the position indicated by the dashed dotted line, that is, at the position where the luminous flux of the principal ray 41 is to be controlled. At some point, the slit opening 51 formed by the end 30m and the end [511] is at right angles to the principal ray 51, and furthermore, when it is at the broken line position, that is, the position where the luminous flux of the principal ray 42 should be controlled, the end 30a The second slit plate 6 is formed by a cam surface so that the slit opening 52 formed by the end portion 31a and the end portion 31a is approximately perpendicular to the principal ray 52.
1 rotation is controlled. The shape of the cam surface is designed so that the rotation of the second slit plate corrects the influence of the scanning position of the optical system and the characteristics of the lens, thereby making the illuminance distribution uniform in the scanning direction. The size of the slit aperture formed by the slit plates 30 and 31 changes so as to widen the luminous flux whose principal ray is inclined with respect to the photosensitive drum compared to the luminous flux near the optical axis of the projection lens. That is, the brightness of the original axis is corrected to match the brightness near the optical axis, thereby making it possible to achieve a uniform illuminance distribution in the scanning direction without losing the phosphene.
第4図及び11g5図は光量制御部材の他の実施例を示
し%70は開ロア1を有する第1スリツト板、72鉱第
1スリツト板70上に摺動自在に配置された第2スリツ
ト板、73は第1スリント板7゜に設けた軸74と第2
スリツト板72に設けた細75に回動自在に支持された
アーム、76は第2スリツト板72の一端に回転自在に
設けたコロ、77はコc176と係合するカム面、78
はコ076を常時カム面77に押圧するばねである。4 and 11g5 show other embodiments of the light amount control member, and 70 is a first slit plate having an open lower part 1, and a second slit plate is slidably disposed on the first slit plate 70 of 72 ore. , 73 are the shaft 74 provided on the first slint plate 7° and the second
An arm is rotatably supported by a thin strip 75 provided on the slit plate 72, 76 is a roller rotatably provided at one end of the second slit plate 72, 77 is a cam surface that engages with the rod 176, 78
is a spring that constantly presses the rod 076 against the cam surface 77.
スリット板7o・72は投影像の移動に同期して一体的
に矢印方向に移動し、第2スリツト板72が移動すると
きコロ76がカム面77に沿って移動し、これによりア
ーム73が軸74を中心として回転して実線位置と二点
鎖線位置の間を移動し、アーム73の回転により第2ス
リツト板72が第1スリツト板70に沿って摺動して、
第1スリツト板70の端部70aと第2スリツト板72
の端部72aの間隔が変化する。カム而77を適当な形
状にすることにより、スリット板7o・72の移動時に
1感元ドラム上の投影レンズの光軸と感光ドラ^に入射
する光束の主光線とのなす角0の変化に対応してスリッ
ト板7o・72によって形成されるスリット開口の大き
さを制御し、走査方向に関し感光体の露光域で一様の照
度分布にすることができる。The slit plates 7o and 72 integrally move in the direction of the arrow in synchronization with the movement of the projected image, and when the second slit plate 72 moves, the rollers 76 move along the cam surface 77, which causes the arm 73 to pivot. 74 as a center to move between the solid line position and the two-dot chain line position, and the rotation of the arm 73 causes the second slit plate 72 to slide along the first slit plate 70,
End portion 70a of first slit plate 70 and second slit plate 72
The distance between the end portions 72a changes. By making the cam 77 into an appropriate shape, the angle 0 between the optical axis of the projection lens on the photosensitive drum and the principal ray of the light beam incident on the photosensitive drum changes when the slit plates 7o and 72 move. Correspondingly, the size of the slit opening formed by the slit plates 7o and 72 can be controlled to provide a uniform illuminance distribution in the exposure area of the photoreceptor in the scanning direction.
第1スリツト板70の端部70aは凸状に湾曲した形状
を有し、この端部70mの形状を適当な非直線に設定す
ることにより、スリット長手方向すなわち走査方向と直
交する方向に関し感光体の寓光域で一様の照度分布にす
ることができる。The end portion 70a of the first slit plate 70 has a convexly curved shape, and by setting the shape of the end portion 70m to an appropriate non-linear shape, the photoreceptor is A uniform illuminance distribution can be achieved in the light range.
第6図は光量規制部材の更に他の実施例を示すもので、
1対のスリット板を移動時にそれぞれ回動させている。FIG. 6 shows still another embodiment of the light amount regulating member,
A pair of slit plates are each rotated during movement.
第6図において、スリット開口を形成する1対のスリッ
ト130・131は投影像と同期して矢印方向移動する
移動台(不図示)上に配設され、第1スリツト板130
け支点135を中心として回動自在であや、第2スリツ
ト板131は支持162を中心として回動自在である。In FIG. 6, a pair of slits 130 and 131 forming a slit opening are arranged on a moving table (not shown) that moves in the direction of the arrow in synchronization with the projected image, and a first slit plate 130
The second slit plate 131 is rotatable about the supporting point 135, and the second slit plate 131 is rotatable about the support 162.
各スリット板150・151の義面にコロ136−13
3がそれぞれ設けられていて、コロ136−133 F
iカカム64の表面に常時接触している。スリット板1
50・131は移動台と一体的に矢印方向に移動し、移
動時コロ136・133はカム154に沿って移動し、
これにより第1・第2スリツト板130 @131が回
動し、スリット開口の大きさが変化する。第1・紀2ス
リット板130・151は実線位置から一点鎖線位請を
経て破線位置に移動し、移動時に両者の相対位置が変化
することになる。Roller 136-13 on the prosthetic surface of each slit plate 150, 151
3 are provided respectively, and the rollers 136-133 F
It is in constant contact with the surface of the i-cam 64. Slit plate 1
50 and 131 move integrally with the moving table in the direction of the arrow, and during movement, rollers 136 and 133 move along the cam 154,
As a result, the first and second slit plates 130@131 rotate, and the size of the slit opening changes. The first and second slit plates 130 and 151 move from the solid line position to the dashed line position via the dashed line position, and their relative positions change during movement.
本発明は光学走査方式として、実施例で示したレンズの
像界側の反射鏡を移動する方式の他に、レンズを移動し
たり、レンズの物界側の反射鏡を移動する公知の光学走
査方式を適用することができる。In addition to the optical scanning method shown in the embodiment in which the reflecting mirror on the image field side of the lens is moved, the present invention uses a known optical scanning method in which the lens is moved or the reflecting mirror on the object side of the lens is moved. method can be applied.
また本発明は公知の穐々の複写鳴に適用することができ
る。Further, the present invention can be applied to the known copy sound of Aki.
以上のように本発明によれば辱度な損失することなく走
査方向及び走査方向と直交する方向の感光体上の照度分
布を一様にすることができ、またスリット開口を調整す
る機構が簡単となり、装置の構造が簡単で安価となる。As described above, according to the present invention, the illuminance distribution on the photoreceptor in the scanning direction and the direction perpendicular to the scanning direction can be made uniform without any unnecessary loss, and the mechanism for adjusting the slit opening is simple. Therefore, the structure of the device is simple and inexpensive.
第1図は露光スリットと照射光束との関係を示す図、第
2図社本発明を適用した複写機の概要構成図〜第3図は
光量規制部材の構成図、第4図は光量規制部材の他の実
施例を示す構成図、第5図は第4図の■−v線に沿った
断面図、第6図社光量規制部材の更に他の実施例を示す
構成図である。
1・・・・・感光ドラム 5・0・・投影レンズ7.
8・・・・・反射鏡 1!1・・・・拳光量規制部材
出麩 キャノン株式会社
1嗣
筋?2Fig. 1 is a diagram showing the relationship between the exposure slit and the irradiation light flux, Fig. 2 is a general configuration diagram of a copying machine to which the present invention is applied - Fig. 3 is a configuration diagram of the light amount regulating member, and Fig. 4 is the light amount regulating member FIG. 5 is a cross-sectional view taken along line 2--v in FIG. 4, and FIG. 6 is a configuration diagram showing still another embodiment of the light amount regulating member. 1...Photosensitive drum 5.0...Projection lens 7.
8...Reflector 1! 1...Fist light amount regulation member appearance Canon Co., Ltd. 1 Tsugusuji? 2
Claims (1)
の投影像を移動する感光体にスリット露光する装置にお
いて、投影レンズと感光体の間に露光用スリット開口を
形成する複数個のスリット板を設け、光軸を挾んで少な
くとも一方の側のスリット板の開口幅をスリット板の長
手方向に関し非直線形状にすると共に複数個のスリット
対位置を変化させるようにしたことを特徴とする光学走
査露光装置。 2)複数個のスリット板のうち光軸を挾んで少なくとも
一方の側のスリット板が開口端と反対側の端部付近を支
点として回動することを特徴とする特許請求の範囲第1
項記載の光学走査露光装置。 (3)ネリット板をカム面に沿って移動させることによ
りスリット板を回動してスリット開口の大きさを変化さ
せるようにしたことを特徴とする特許請求の範囲第2項
記載の光学走査wr元装置。 (4)複数個のスリット板の5ちft、軸を挾んで少な
くとも一方の側のスリット板の開口端が他方の側のスリ
ット板の開口端に対して接近、離間するように移動する
ことを特徴とする特許請求の範囲第1項記載の光学走査
露光装置。 (5)スリット板をカム面に沿って移動させることによ
り一方の側のスリット板を他方の側のスリット板に沿っ
て移動してスリット開口の大きさを変化させるようにし
たことを特徴とする特許請求の範囲第4項記載の光学走
査露光装置。[Scope of Claims] (1) In an apparatus for projecting a stationary manuscript onto a moving optical system and exposing the projected image to a moving photoreceptor through a slit, an exposure slit is provided between the projection lens and the photoreceptor. A plurality of slit plates forming an aperture are provided, and the aperture width of the slit plate on at least one side of the optical axis is made into a non-linear shape in the longitudinal direction of the slit plate, and the positions of the plurality of slits are changed. An optical scanning exposure device characterized by: 2) The slit plate on at least one side of the plurality of slit plates with the optical axis in between rotates around the end opposite to the opening end as a fulcrum.
The optical scanning exposure apparatus described in 1. (3) Optical scanning wr according to claim 2, characterized in that the size of the slit opening is changed by rotating the slit plate by moving the netrite plate along the cam surface. Original device. (4) The opening end of the slit plate on at least one side of the plurality of slit plates should be moved toward and away from the open end of the slit plate on the other side with the shafts in between. An optical scanning exposure apparatus according to claim 1. (5) By moving the slit plate along the cam surface, the slit plate on one side is moved along the slit plate on the other side to change the size of the slit opening. An optical scanning exposure apparatus according to claim 4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12331881A JPS5824167A (en) | 1981-08-06 | 1981-08-06 | Optical scanning and exposing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12331881A JPS5824167A (en) | 1981-08-06 | 1981-08-06 | Optical scanning and exposing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5824167A true JPS5824167A (en) | 1983-02-14 |
Family
ID=14857580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12331881A Pending JPS5824167A (en) | 1981-08-06 | 1981-08-06 | Optical scanning and exposing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5824167A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2563019A1 (en) * | 1984-04-14 | 1985-10-18 | Agfa Gevaert Ag | DEVICE FOR CONTROLLING A SLIT DIAPHRAGM IN A MICROFILM READING AND COPYING APPARATUS FROM MICROFILMS |
JPS63160914U (en) * | 1987-04-06 | 1988-10-20 |
-
1981
- 1981-08-06 JP JP12331881A patent/JPS5824167A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2563019A1 (en) * | 1984-04-14 | 1985-10-18 | Agfa Gevaert Ag | DEVICE FOR CONTROLLING A SLIT DIAPHRAGM IN A MICROFILM READING AND COPYING APPARATUS FROM MICROFILMS |
JPS63160914U (en) * | 1987-04-06 | 1988-10-20 |
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