JPS62127865A - Plate writing copying device - Google Patents

Abstract

PURPOSE:To obtain a plate writing copying device which has a high efficiency as a light quantity and small in size, by reducing the image forming magnification of the first image forming optical body in a plate writing side structure body, and using the image forming magnification of the second image forming optical system of an electrophotographic copying machine side, by a magnifying system. CONSTITUTION:The second image forming optical system is constituted of mirrors 9, 11, and a lens 10 placed in a case body 6, and the first image forming optical system is constituted of the first and the second mirrors 13, 14, and a lens 15. When the second image forming optical system in a copying machine has unmagnification and an exposure quantity on a photosensitive body is constant, the efficiency becomes better as a light quantity by reducing an image forming magnification of the first image forming optical system, and enlarging (used by a magnifying system) the image forming magnification of the other second image forming optical system, and the burden of an illuminating system of the first image forming optical system can be lightened. Also, FNO of the lens can be enlarged, and also, a device can also be miniaturized.

Description

【発明の詳細な説明】 （発明の産業上の利用分野） 本発明は板書面に板書された画↑に報と、ｎｉｌ記板誓
面とは別の原稿との両者が記録材に複写できる板ｆ複写
装置に関するものである。[Detailed Description of the Invention] (Industrial Application Field of the Invention) The present invention is capable of copying both an image written on a board and a manuscript different from the nil board oath onto a recording material. This relates to a plate f copying device.

（従来技術） 従来、板書面に板書され九画１ｎ報金複写可能にする装
置においては、板書面読み堰り方式としてＣＯＤ素子に
よる読み取りセンサー？用いた平面走査方式を適用し、
その記録方式としては感熱紙に記録する感熱記録方式が
二股的である。この棟のテジタル方式は普通紙に記録で
きないばかりではなく、記録方式の原理・性能上多数枚
の叡与には時間−ｒ：費やし、その記録密度も約６トノ
ト／個程度と低い。(Prior Art) Conventionally, in a device that enables copying of 9-stroke 1n reward written on a board, a reading sensor using a COD element is used as a board reading system. Applying the plane scanning method used,
There are two types of recording methods: a thermal recording method that records on thermal paper. The digital method used in this building not only cannot record on plain paper, but due to the principle and performance of the recording method, it takes time to record a large number of sheets, and the recording density is low at about 6 tons/piece.

そこで近年、板書面に書かれた画情報？電子写真方式で
複写する方法が提案されている。この種の方式には、板
１°された画情報を電子写真複写機の感光体に直接結ｌ
させ、公知の電子写真フロセスにより転写材に複写する
方法と、板書妬ｒした画情報を一度フイールドレンズに
結鐵させ、そのｌ紫電子写真複写機内の別の光学系で感
光体に転送結像させ、公知の電子写真プロセスに工す転
写材に複写する方法等がある。So, in recent years, the image information written on the board? A method of copying using electrophotography has been proposed. This type of method involves direct connection of the image information printed on the plate to the photoreceptor of the electrophotographic copying machine.
The method involves copying the image information onto a transfer material using a known electrophotographic process, and once the image information written on the board is focused on a field lens, and then transferred to a photoreceptor using another optical system in the electrophotographic copying machine to form an image. There is a method of copying the image onto a transfer material used in a known electrophotographic process.

両者の方法とも原稿台に載置きれたシート又は立体原稿
の複写及び板書面に畜かれた画情報の普通紙への複写が
可能である。また更に、デジタル方式に比べ記録密度も
向上し、多数枚の複写も１回の板嘗面複写後、この複写
により４た転写紙を原稿として２次複写すれば時間的浪
費もない・（発明が解決しようとする問題点） しかし、前者の方式では感光体に板書された画情報ヶ直
接結障させる友め、板書面からの光路と複写機の原稿台
からの光路を感光体の位置に到る−まで全く別個の光路
を構成しなければならない。With both methods, it is possible to copy a sheet or three-dimensional original placed on a document table, and to copy image information stored on a board onto plain paper. Furthermore, the recording density is improved compared to the digital method, and even when making multiple copies, if you make a single plate copy and then make a secondary copy using the 4 transfer paper as the original, there is no wasted time. (Invention However, in the former method, the image information written on the board is directly interfered with, and the optical path from the board and the copying machine's document table are placed at the position of the photoconductor. Completely separate optical paths must be constructed from the beginning to the end.

このために光路構成が複雑化し、同時に装置も自然と大
型化してしまう。一方、後者の方式は板書面の悄＠ケ一
度フィールドレンズに結鐵させ、そのｌｔ両モード共用
の第２結障光学系で転送結鐵させるため、装置の小型ｆ
ヒケ可能にする。しかし、フィールドレンズに板書面の
画情報を一度結像させるので元ｉ！ｌｃ関して損失が大
きく、このため板′書面への照明系への負担が大となる
。This complicates the optical path configuration and naturally increases the size of the device. On the other hand, in the latter method, the light on the board is connected once to the field lens, and the second interference optical system that is used for both modes transfers it, so the small size of the device is required.
Allows sinking. However, since the image information on the board is once formed on the field lens, the original i! The loss associated with the lc is large, and this places a heavy burden on the illumination system for the board.

本発明は前記不都合ケ解決し、光量的に効率が良くまた
小型で板書面と原稿台上の原稿のｍす方を複写可能な板
沓棲写装（ｌｋ’ｆｆｌ供することケ目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned inconveniences, and to provide a light copying device that is efficient in light quantity, small in size, and capable of copying both the document on the board and the document on the document table.

（問題点ヶ解決するための手段） 本発明の板誓複写装ｆｔは、板書面を照明する照明手段
と、前記板１：面の＠ｔフィールドレンズに結像させる
結像レンズとを含む第１結像光学系と、板書面とは別の
被複写原稿奮搬送する原稿搬送手段と、板書面複写モー
ドでは前記フィールドレンズに結像した潅ヲ感光体に転
送結像させ、原稿複写モードでは前記原稿搬送手段にニ
ジ搬送される“原稿の海を前記感光体に結鐵させる両モ
ード共用の第２結ｆｔ！光学系とを有し、前記板書面複
写モード時れＬ前記第２結像光学系の結鐵倍率βを拡大
系（β＞１〕で使用することに工す達成される。(Means for Solving the Problems) The board oath copying device ft of the present invention includes an illumination means for illuminating the board writing, and an imaging lens for forming an image on the @t field lens on the board 1: surface. (1) an imaging optical system, a document conveying means for conveying the original to be copied, which is different from the board document; a second image forming optical system for both modes that focuses the sea of documents conveyed by the document conveying means on the photoreceptor; This is achieved by using the optical system's magnification β in a magnifying system (β>1).

（実施例） 以下、図面を参照して、本発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

第１因は本発明の一実施例の斜視図であり、第２囚は第
１図の要部断面図である。図中１は幅広合成樹脂ベルト
等の白色乃至淡色の可撓性板書面部Ｉであり、ローラ２
，３閣に張架立設されている。板書面は上下方向に略平
面であり、ローラ２゜３紫矢印方向に回転することによ
り可動であって。The first factor is a perspective view of one embodiment of the present invention, and the second factor is a sectional view of the main part of FIG. 1. In the figure, 1 is a white or light-colored flexible board I made of a wide synthetic resin belt, etc., and roller 2
, Stretched structures have been erected in three temples. The board is substantially flat in the vertical direction, and is movable by rotating the roller 2°3 in the direction of the purple arrow.

この時板書され友情報が走査され、後述の光学系に工り
電子写真感光体７に投影される。前記部材１には図中人
に示す側の面で、適宜の筆記具により所望の情報が板書
され利用され、板書され友情報はローラ２，３の回転Ｙ
ｃ工りＡとは反対側の位置である図中Ｂの位置でランプ
４により照明され、走査される。At this time, the friend information written on the board is scanned and projected onto the electrophotographic photoreceptor 7 using an optical system to be described later. Desired information is written on the board with an appropriate writing instrument on the side shown to the person in the figure on the member 1, and the friend information written on the board is used as the rollers 2 and 3 rotate Y.
The lamp 4 illuminates and scans the position B in the figure, which is the position opposite to the c-cut A.

因の５は複写プロセス部であって、箱体６内に矢印方向
に回転する電子写真感光体７を有している。この感光体
７の回転径路沿には、感光化帯電器、現像器、転写帯電
器、り＋７−　ニング器が設けられている。そして、更
に転写帯電器位置に転写材を供給する手段、また転写材
に転写されたトナー［１！に２着する定層器も各々所定
の位［に設けられているが、これらは周知であるので説
明は省略する。また、箱体６の上部には可動原稿台８が
取付けられている。Factor 5 is a copying process section, which has an electrophotographic photoreceptor 7 inside a box 6 that rotates in the direction of the arrow. A photosensitive charging device, a developing device, a transfer charging device, and a cleaning device are provided along the rotation path of the photoreceptor 7. Further, there is a means for supplying the transfer material to the transfer charger position, and a toner [1!] transferred to the transfer material. Two levelers are also provided at predetermined positions, but since these are well known, their explanation will be omitted. Furthermore, a movable document table 8 is attached to the upper part of the box body 6.

原稿台８上の書類等の原稿を複写する複写モードでは、
この原稿台８に書類等の被複写原稿が載置され、そして
台８は部材１の移動方向と略垂直な矢印方向に往動し、
感光体に原稿鐵を結像するために原稿が走査される。そ
して原稿走査が終了すると台８はホームポジションに復
動復帰する。In the copy mode for copying originals such as documents on the document table 8,
An original to be copied, such as a document, is placed on this original table 8, and the table 8 moves forward in the direction of the arrow substantially perpendicular to the moving direction of the member 1.
The original is scanned to image the original onto the photoreceptor. When scanning of the original is completed, the table 8 returns to the home position.

原稿走査時、台８に載置された原稿の（象は、箱体６内
に配置され次ミラー９．１１．レンズ１０から成る第２
の結像光学系により、感光体７に結像露光される。この
露光位置は前記感光化帯電器と現像器の間の位置である
。尚、前記結像光学系は。When scanning an original, the image of the original placed on the stand 8 is a second mirror placed inside the box 6 and consisting of a second mirror 9, 11, and a lens 10.
An image is formed and exposed onto the photoreceptor 7 by the imaging optical system. This exposure position is between the photosensitive charger and the developer. Note that the imaging optical system is as follows.

箱体６に対して固定された位置である０位ｗ、？通過す
る原稿の＠！金感光体７に投影結鐵する。0 position w, which is a fixed position relative to the box body 6? @ of the manuscript to be passed! The projection iron is applied to the gold photoreceptor 7.

一方、板書面複写モードでは、前記Ｃ位置に原稿台８に
当接又は近接し、てフィールドレンズ１２が配置される
。一方％原稿台８に載置した原稿の複写モードでは、フ
ィールドレンズ１２は上記位置から退避又は取り外され
ている。本実施例ではフィールドレンズ１２は１乃至４
の各部材、及び第１結１象光学系を構成する第１．第２
ミラー１３゜１４．レンズ１５を収納した板書部箱体１
６に取付けられた蛇腹等の伸縮可能な光路カバー１７に
取付けられており、板書面複写モードでは降下せしめら
れて如上の位置に配置され、原稿複写モードでは上昇し
て台８の移動路から退避している。On the other hand, in the board copying mode, the field lens 12 is placed at the C position in contact with or close to the document table 8. On the other hand, in the copy mode for the original placed on the original platen 8, the field lens 12 is retracted or removed from the above position. In this embodiment, the number of field lenses 12 is 1 to 4.
and the first component constituting the first quadrant optical system. Second
Mirror 13°14. Board box 1 housing lens 15
It is attached to a retractable optical path cover 17 such as a bellows attached to the table 6, and in the board copying mode, it is lowered and placed in the above position, and in the document copying mode, it is raised and retreated from the movement path of the table 8. are doing.

この様にしてフィールドレンズ１２には前記Ｂ位置で走
査された板書面の鍬が、投影されるのである。In this way, the hoe on the board scanned at the B position is projected onto the field lens 12.

前記第１結像光学系の第１ミラー１３は上下方向に配置
され、ラング４で照明され皮板書面からの光を板書面に
沿って横方向に反射し、第２ミラー１４は第１ミラー１
３からの上記光を板書面に沿って下方向に反射する。そ
してレンズ１５が第２ミラー１４からの光を受けて１位
置Ｂにある板書面部分のＩＪＲ’にフィールドレンズ１
２に結像する。The first mirror 13 of the first imaging optical system is arranged in the vertical direction and is illuminated by the rung 4 to reflect the light from the skin board laterally along the board, and the second mirror 14 is arranged in the vertical direction, and is illuminated by the rung 4 to reflect the light from the skin board in the lateral direction along the board. 1
3 is reflected downward along the board. Then, the lens 15 receives the light from the second mirror 14, and the field lens 1
Image is formed on 2.

一方、箱体６内に配置され九ミラー９，１１とレンズ１
０から成る第２結像光学系は、後述する理由ｌこよシ前
記フィールドレンズに結像したＯＩ！を拡大結像する工
う変位する。具体的にはレンズｌＯ倉ズームレンズとし
、ミラー９．１１は固定したままこのズームレンズ１０
が所定の倍率にな　　−るよう駆動モータ等で全体移動
しながら焦点距離ケ変え、第２図の鎖称位置まで移動す
る。この結縁光学系により前記フィールドレンズに結諌
された像は、原稿複写モードの場合と同じ位置で、感光
体７に転送され拡大された状、寒で結像される。On the other hand, nine mirrors 9 and 11 and a lens 1 are arranged inside the box body 6.
The second imaging optical system consisting of OI 0 focuses on the field lens for reasons described below. Displace the image to enlarge it. Specifically, the lens 10 is a zoom lens, and the zoom lens 10 is fixed while the mirror 9.11 is fixed.
While moving the entire lens using a drive motor etc., the focal length is changed so that the magnification becomes a predetermined magnification, and the lens is moved to the chain position shown in Fig. 2. The image focused on the field lens by this focusing optical system is transferred to the photoreceptor 7 and formed into an enlarged cold image at the same position as in the original copying mode.

次に第２結像光学系？拡大系ＶＣして使用する効果につ
いて述べる。Next is the second imaging optical system? The effects of using an expanded VC will be described.

一般に、レンズＸ軸上の結像点における照度Ｅは、次式
で求められる。Generally, the illuminance E at the imaging point on the lens X-axis is determined by the following equation.

前記式において。In the above formula.

Ｌは結峰の対象となる物体面上の輝度 τはレンズの透過率 Ｉｌｌは結像倍率 りは入射８峻径 ｆはレンズの焦点距離 ＦＮＯはレンズのＦナンバー 倉示す。つまり、レンズ光軸上の照度はＬ・ｒ。L is the brightness on the object surface that is the target of the peak τ is the lens transmittance Ill is the imaging magnification The incident angle is 8 steep diameter. f is the focal length of the lens FNO is the F number of the lens Kurashiki. In other words, the illuminance on the lens optical axis is L·r.

ＦＮＯｋ一定とすれば、　　（１＋ｍ）ｌに逆比例する
から、結鐵倍率ｍが小さいはど結像面での照度は大きく
なる。このことから前記フィールドレンズに結像し次像
の照度音大きくするには、第１結像元学系の結像倍率を
小さくすれば良いことがわかる。If FNOk is constant, it is inversely proportional to (1+m)l, so the smaller the iron magnification m, the greater the illuminance on the imaging plane. From this, it can be seen that in order to increase the illuminance sound of the next image formed on the field lens, it is sufficient to reduce the imaging magnification of the first imaging element system.

一方、レンズの半面角ωは次式で求められる。On the other hand, the half angle ω of the lens is determined by the following equation.

前記式において、 ｆはレンズの焦点距離 ｍは結像倍率 Ｈは板書面画面サイズ を示す。つまりＨ，ｆが一定であるとすれは、結像倍率
ｍが小さいほど半面角ωを小さくでき、同時にレンズの
性能面からみても有利となる。又。In the above equation, f is the focal length of the lens, m is the imaging magnification, and H is the board screen size. In other words, if H and f are constant, the smaller the imaging magnification m is, the smaller the half-plane angle ω can be, which is also advantageous in terms of lens performance. or.

ω、１ｌｉ一定とすれば、結□□□倍率ｍが小さい１１
どｆ（ｒ小さくでき、ひいては光路長に短縮できるため
装置ｔ構成の小型化が可能となる。If ω and 1li are constant, the resultant magnification m is small11
Since the f(r) can be made small and the optical path length can be shortened, it is possible to downsize the device configuration.

以上の理由から複写機内の第２結像光学系が等倍で感光
体上での露光址が一定であるならば、第１結ｌ光学系の
結像倍率を小さくシ、一方の第２結慮光学系の結１倍率
を大きく（即ち、拡大系で使用）した方が、光量的に効
率が良く、第１結像光学系の照明系の負担を軽くでき、
更にレンズのＦＮＯも大きくでき、同時に装置の小型化
もはかることができる。For the above reasons, if the second imaging optical system in the copying machine has the same magnification and the exposure area on the photoreceptor is constant, the imaging magnification of the first optical system can be reduced, and one of the second imaging Increasing the magnification of the first imaging optical system (i.e., using it as a magnification system) is more efficient in terms of light quantity and reduces the burden on the illumination system of the first imaging optical system.
Furthermore, the FNO of the lens can be increased, and at the same time, the device can be made smaller.

なお、上記実施例においてはフィールドレンズ倉光路カ
バー１７に取付けたが、原稿台８に対して麿脱可能にし
ても良い。−また、原稿台８は移動形のもの倉例示した
が、位［Ｃの左右に搬送口〜う対を配設し、シート状の
原稿？このローラ対により搬送・ｒれば、原稿台の移動
は必要なくなる。In the above embodiment, the field lens is attached to the optical path cover 17, but it may be made removable from the document table 8. - In addition, although the document table 8 is shown as a movable storage, there are two conveyor ports on the left and right sides of the document table 8, which can hold sheet-like documents. If the document is transported by this pair of rollers, there is no need to move the document table.

（発明の効果） 以上説明したように本発明によれば、板書側構造体中の
第１結像光学体の結１倍率を小さくし、電子写真複写機
側の第２結隊光学系の結像倍率を拡大系で使用すること
ＶＣより、光量的に効率が良く、小型な板４！：嶺写装
置が可能となる。(Effects of the Invention) As explained above, according to the present invention, the 1 magnification of the first imaging optical body in the board writing side structure is reduced, and the focusing power of the second group optical system on the electrophotographic copying machine side is reduced. Image magnification is used in a magnifying system.It is more efficient in terms of light quantity than VC and is a smaller plate 4! : Ridge photography device becomes possible.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の斜視図、第２図はその要部
断面図である。 図においで、■は板嘗面部材、８は原稿台、９はミラー
、１０は第２結［家元学系を構成するレンズ、１１はミ
ラー、１２はフィールドレンズ。 １３は第１ミラー、１４は第２ミラー、１５は第１結像
光学系を構成するレンズ金示す。FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view of a main part thereof. In the figure, ■ is the plate cover member, 8 is the document table, 9 is the mirror, 10 is the second lens [which makes up the Iemoto system, 11 is the mirror, and 12 is the field lens. 13 is a first mirror, 14 is a second mirror, and 15 is a lens constituting the first imaging optical system.

Claims (1)

【特許請求の範囲】[Claims] （１）板書面に描いた画情報を電子写真装置により複写
する板書複写装置において、 板書面を照明する照明手段と、前記板書面 の像をフィールドレンズに結像させる結像レンズとを含
む第１結像光学系と、板書面とは別の被複写原稿を搬送
する原稿搬送手段と、板書面複写モードでは前記フィー
ルドレンズに結像した像を感光体に転送結像させ、原稿
複写モードでは前記原稿搬送手段により搬送される原稿
の像を前記感光体に結像させる両モード共用の第２結像
光学系とを有し、前記板書面複写モード時は前記第２結
像光学系の結像倍率βを拡大系（β＞１）で使用するこ
とを特徴とする板書複写装置。(1) In a board copying device that copies image information drawn on a board using an electrophotographic device, the board includes an illumination unit that illuminates the board, and an imaging lens that forms an image of the board on a field lens. 1 an imaging optical system, a document conveying means for conveying a document to be copied different from the board document; in the board document copying mode, the image formed on the field lens is transferred to the photoreceptor, and in the document copying mode, the image formed on the field lens is transferred to the photosensitive member; a second imaging optical system for both modes that forms an image of the original transported by the original transporting means on the photoreceptor, and in the board copying mode, the second imaging optical system A board copying device characterized in that an image magnification β is used in an enlargement system (β>1).