JPH0264544A - Automatic positioning device for original film for producing form plate - Google Patents
Automatic positioning device for original film for producing form plateInfo
- Publication number
- JPH0264544A JPH0264544A JP63215169A JP21516988A JPH0264544A JP H0264544 A JPH0264544 A JP H0264544A JP 63215169 A JP63215169 A JP 63215169A JP 21516988 A JP21516988 A JP 21516988A JP H0264544 A JPH0264544 A JP H0264544A
- Authority
- JP
- Japan
- Prior art keywords
- film
- original film
- sensor
- reference line
- peak wavelength
- 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
- 230000003595 spectral effect Effects 0.000 claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 18
- 230000035945 sensitivity Effects 0.000 claims abstract description 17
- 241000238633 Odonata Species 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000006693 Cassia laevigata Nutrition 0.000 description 1
- 241000735631 Senna pendula Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 229940124513 senna glycoside Drugs 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Landscapes
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は版板製作用の原稿フィルムの自動位置決め装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic positioning device for original film for printing plate production.
［従来の技術１
カラー印刷をするには１例えばシアン、マゼンタ、イエ
ロー、スミ（黒）用の４枚の版板が準備される０版板は
殖版機を用いて、生版板（例えばアルミ板に感光剤を塗
布したもの）に原稿フィルムを重ね紫外線で焼付（ここ
までの作業が殖版機）した後、版板を現像する。このよ
うにして順次４枚の版板が作られる。[Prior art 1 To perform color printing 1 For example, four printing plates for cyan, magenta, yellow, and black are prepared. After the manuscript film is layered on an aluminum plate coated with a photosensitizer and printed with ultraviolet light (all the work up to this point is done using a printing press), the printing plate is developed. In this way, four printing plates are made one after another.
その際、各版板に焼付られる各原稿フィルム（シアン、
マゼンタ、イエロー、スミ用で異なる）の位置が一致し
ていないと、印刷したとき色ずれが起こる。At that time, each manuscript film (cyan,
(different for magenta, yellow, and smear) If the positions do not match, color misalignment will occur when printing.
殖版機に配置される原稿フィルムは、予め透明なベース
フィルム（乃至キャリヤシート）に接着テープ等で固定
され、ベースフィルムはその周囲に設けられた穴を、殖
版機の紫外線が照射される透明のガラス板付近のピンと
掛合せしめられて位置決めし１重ねられ、更に版板と密
着される。The original film placed in the plate printing machine is fixed in advance to a transparent base film (or carrier sheet) with adhesive tape, etc., and the base film is irradiated with ultraviolet rays from the plate printing machine through holes provided around it. They are engaged with pins near the transparent glass plate to position them, stacked one on top of the other, and are then brought into close contact with the printing plate.
４枚の版板に焼付られる原稿の位置が一致していないと
、印刷したとき色ずれが起こる為、原稿フィルムを殖版
機に配置する前に、原稿フィルムをベースフィルムＥの
所定位置に正確に固定するフォトセンサを用いた原稿フ
ィルムの自動位置決め装置がある。If the positions of the original printed on the four printing plates do not match, color deviation will occur when printing. Therefore, before placing the original film on the plate printing machine, make sure that the original film is placed in the correct position on the base film E. There is an automatic document film positioning device that uses a photosensor that is fixed to the document film.
これは例えば、透光板の上にベースフィルムを固定しそ
の上に原稿フィルムを置いて透光板の下から光をあて、
原稿フィルムのＥ下左右に設けられたトンボ（位置合わ
せ用の十文字等の印）の線の陰を、原稿フィルムの左右
及び上乃至下の所定位置上に配置された。２個の受光面
を有したフォトセンサで検知し、トンボの線のレンズを
通した陰が２個の受光面の真ん中にくるよう、センサか
らの信号にもとずいて、原稿フィルムを点状に吸引し持
ちあげる吸引腕で、原稿フィルムを移動させて位置決め
し、゛位置決め完了の表示がありしだい１作業者が接着
テープで原稿フィルムをベースフィルムに固定するよう
になされているものである。For example, a base film is fixed on a transparent plate, a document film is placed on top of it, and light is applied from below the transparent plate.
The shadows of the register marks (marks such as cross marks for positioning) provided on the left and right sides of the bottom of the original film were placed at predetermined positions on the left and right and from the top to the bottom of the original film. It is detected by a photosensor with two light-receiving surfaces, and the original film is dotted based on the signal from the sensor so that the shadow of the register mark line through the lens is in the center of the two light-receiving surfaces. The original film is moved and positioned using a suction arm that sucks and lifts the original film, and as soon as there is a display indicating that the positioning is complete, an operator fixes the original film to the base film using adhesive tape.
［発明が解決しようとする課題］
しかし、このような原稿フィルムの自動位置決め装置に
おいては、センサの検知範囲はそれほど広くなく、従っ
て原稿フィルム上のトンボがセンサの検知範囲内にくる
ように原稿フィルムをベースフィルム上に置く必要があ
る。その為、透光板に原稿フィルムが位置すべき場所を
示すため中央縦、横に基準線を設けることが行われてい
る。しかし、このような基準線を設けると、基準線が丁
度トンボ付近にくることになり、センサが基準線を検知
してしまい、原稿フィルムが適正な位置でないにもかか
わらず装置が位置決めをし位置決め完了の表示を出して
しまうことがある。[Problems to be Solved by the Invention] However, in such an automatic document film positioning device, the detection range of the sensor is not so wide, and therefore the document film is moved so that the register mark on the document film is within the detection range of the sensor. must be placed on the base film. For this reason, reference lines are provided vertically and horizontally in the center of the transparent plate to indicate where the original film should be positioned. However, if such a reference line is provided, the reference line will be exactly near the register mark, and the sensor will detect the reference line, causing the device to position the original film even though it is not in the correct position. Sometimes a completion message is displayed.
また基準線とトンボが同一位置にあっても、基準線とト
ンボが常に完全に一致すれば問題はないがそれは難しい
、即ち原稿フィルムにはいろいろな大きさがあるため、
基準線は中央縦、横に端から端まで伸びており、各セン
サも原稿フィルムの大きさに合わせて例えば３０ｃｍは
ど透光板の中心方向に移動可能になされている。しかし
基準線を完全に直線になるように引くのは難しく、１０
００分の何■かの誤差はでてくる。その為基準線の全体
にわたって常に２個の受光面の真ん中にくることはなく
、また来るように機械的乃至電気的にｍＦＭ乃至補正す
るのは大変であり、コストもかかる。Also, even if the reference line and the registration mark are at the same position, there is no problem if the reference line and the registration mark always match perfectly, but this is difficult.
The reference line extends vertically and horizontally at the center from end to end, and each sensor is also movable, for example, by 30 cm toward the center of the transparent plate in accordance with the size of the original film. However, it is difficult to draw the reference line perfectly straight, and 10
There will be an error of several hundredths. Therefore, it is not always located in the middle of the two light receiving surfaces over the entire reference line, and it is difficult and costly to mechanically or electrically correct the mFM so that the reference line is located in the middle.
そこで、基準線をやめてしまう場合もあるが、その場合
は、原稿フィルム乃至ベースフィルム状のシミやキズを
センナが検知してしまい原稿フィルムが適正な位置でな
いにもかかわらず装置が位置決め完了の表示を出してし
まっても１作業者は基準線がないために適正かどうか判
断できず、そのまま原稿フィルムを固定してしまうこと
がある。Therefore, there are cases where you stop using the reference line, but in that case, the senna detects stains or scratches on the original film or base film, and the device displays an indication that positioning is complete even though the original film is not in the correct position. Even if the document film is taken out, one worker may not be able to judge whether it is appropriate because there is no reference line, and may end up fixing the original film as it is.
本発明は、基準線はあるが、基準線があっても基準線と
トンボが誤認されることがないような版板製作用の原稿
自動位置決め装置を提供することを目的としている。SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic document positioning device for printing plate production in which a reference line is provided, but even if there is a reference line, the reference line and registration mark are not mistakenly recognized.
［課題を解決する為の手段］
この目的を達成させるために、この発明は、次のような
構成としている。すなわち、
内部に光源を装着してなる装置本体の上面に基準線を有
した透光板を設け、同透光板の上面にベースフィルムを
固定しその１に原稿フィルムを重ね置き、原稿フィルム
の周辺部に設けられた複数の位置合わせ用のトンボを、
複数個のセンサで検知し、センサからの信号により原稿
フィルムを移動させ、位置決めする、版板製作用の原稿
フィルムの自動位置決め装置に於いて、
基準線の分光吸収特性が、センサの分光感度のピーク波
長より離れた可視光の波長領域に分光吸収のピーク波長
を宥し、一方、トンボの分光吸収特性がセンサの分光感
度のピーク波長近くに分光吸収のピークがあるようにし
た。[Means for Solving the Problems] In order to achieve this object, the present invention has the following configuration. That is, a light-transmitting plate having a reference line is provided on the top surface of the main body of the device, which has a light source installed inside, and a base film is fixed to the top surface of the transparent plate, and an original film is placed on top of the base film. Multiple registration marks provided around the periphery for alignment.
In an automatic document film positioning device for printing plate production, which detects with multiple sensors and moves and positions the document film based on the signals from the sensors, the spectral absorption characteristics of the reference line determine the spectral sensitivity of the sensor. The peak wavelength of spectral absorption was set in the visible light wavelength range away from the peak wavelength, while the spectral absorption characteristic of the dragonfly was set so that the peak of spectral absorption was near the peak wavelength of the spectral sensitivity of the sensor.
［作用］
基準線の分光吸収の波長ピークが、センサの分光感度の
ピーク波長から離れ、トンボの分光吸収の波長ピークが
、センサの分光感度のピーク波長近くにあるため、セン
サはトンボの陰は検知するが、基準線の陰は検知しない
。[Effect] The wavelength peak of the spectral absorption of the reference line is far from the peak wavelength of the spectral sensitivity of the sensor, and the wavelength peak of the spectral absorption of the dragonfly is near the peak wavelength of the spectral sensitivity of the sensor, so the sensor detects the shadow of the dragonfly. Detects, but does not detect the shadow of the reference line.
［実施例】
第１及び２図に於いて、箱形の装置本体ｌ内に光源２が
配置され、この光源としては例えば３５Ｗの白熱ランプ
が用いられる。光源２の上にアクリル板からなる透光板
３が設けられ、透光板３に縦横の中心部に基準線４，５
を有した、透光板３と同じ大きさの透明フィルム３ａが
貼られている。基準線の幅は５７１００ｍｍぐらいであ
る。[Embodiment] In FIGS. 1 and 2, a light source 2 is arranged inside a box-shaped device main body 1, and a 35 W incandescent lamp is used as the light source, for example. A transparent plate 3 made of an acrylic plate is provided on the light source 2, and reference lines 4, 5 are provided at the vertical and horizontal centers of the transparent plate 3.
A transparent film 3a having the same size as the transparent plate 3 is attached. The width of the reference line is approximately 57,100 mm.
この基準線の上方にセンサ６．７．８がそれぞれセンサ
支持体９．１０．１１に支持され、各センサは原稿フィ
ルムの大きさに応じて各基準線の方向に移動可能になさ
れている。各センサは９０ミクロンの間隔で配置された
２個の受光面１２．１３を有したシリコンフォトダイオ
ード１４からなる（第６図）、！先板３の左右両端部に
はピン１５が設けられている。Above this reference line, sensors 6.7.8 are respectively supported by sensor supports 9.10.11, and each sensor is movable in the direction of each reference line depending on the size of the original film. Each sensor consists of a silicon photodiode 14 (FIG. 6) with two receiving surfaces 12.13 spaced apart by 90 microns! Pins 15 are provided at both left and right ends of the tip plate 3.
原稿フィルム１６（第３図）は、所望の原稿が焼付、現
像されたポジ又はネガフィルムで、−ヒ下左右に位置決
めの為の十字形のトンボ１７が焼付られている。トンボ
１７の線の幅は５／Ｚｏｏ〜２０ ／ １００ ｍ ｍ
ぐらいである。原稿フィルム１６が固定されるベースフ
ィルム１８（第４図）は透明の樹脂フィルムからなり、
左右両端に装置１のピン１５と掛合する孔１９を有して
いる。センサ支持体を回避させてから、ベースフィルム
１８を透明フィルム３ａ上にｔ置し、ベースフィルム１
８の孔１９を装置ｌｌのピン１５に嵌合させて、位置決
めする。その上に原稿フィルム１６をそのトンボ１７が
基準線４，５の近くに来るように載置する。The original film 16 (FIG. 3) is a positive or negative film on which a desired original has been printed and developed, and cross-shaped registration marks 17 for positioning are printed on the left and right sides of the bottom. The width of the line of register mark 17 is 5/Zoo to 20/100 mm
That's about it. The base film 18 (FIG. 4) to which the original film 16 is fixed is made of a transparent resin film.
It has holes 19 at both left and right ends that engage with pins 15 of the device 1. After avoiding the sensor support, the base film 18 is placed on the transparent film 3a, and the base film 1 is placed on the transparent film 3a.
The hole 19 of 8 is fitted into the pin 15 of device 11 for positioning. The original film 16 is placed thereon so that the register marks 17 are near the reference lines 4 and 5.
光源２をつけると第６図のようにセンサ７はレンズ２０
を介したトンボ１７の陰を受け、２つの受光面１２．１
３の受光量による電圧差を差動増幅器（図示せず）で増
幅し、その出力信号により作力する吸引腕１０ａ、ｌｌ
ａが原稿フィルムを移動させる０両受光面１２．１３の
真ん中にトンボの陰がくると両受光面の受光量は等しく
、差動増幅器の出力電圧はＯになる。When the light source 2 is turned on, the sensor 7 is exposed to the lens 20 as shown in FIG.
The two light-receiving surfaces 12.1 receive the shadow of the register mark 17 through the
A differential amplifier (not shown) amplifies the voltage difference depending on the amount of light received in step 3, and the suction arms 10a, 11 are actuated by the output signal.
When the shadow of the register mark comes to the center of the two light-receiving surfaces 12 and 13 where a moves the original film, the amount of light received by both light-receiving surfaces is equal, and the output voltage of the differential amplifier becomes O.
基準線を有する透明フィルム３ａは、黒のネガフィルム
に傷を付けて線を引き、これをフィルムに焼付け、発色
現像して作った。The transparent film 3a having a reference line was made by scratching and drawing a line on a black negative film, printing the line on the film, and developing it to develop color.
トンボ１７は通常の方法で原稿と一緒に原稿フィルムに
設けられた。Registration marks 17 were placed on the original film together with the original in the usual manner.
センサ７は第７図のような分光感度特性を有し、分光感
度のピーク波長は９００ｎｍぐらいのところにある。こ
れに対し基準線は、センサの分光感度のピークから大き
く離れた４００ｎｍぐらいの波長（可視光の領域内であ
るため基準線は目でみえる）のところに分光吸収のピー
クを有し、方、トンボはセンサと同じ９００ｎｍぐらい
の波長のところに分光吸収のピークを有しているように
なされている。The sensor 7 has spectral sensitivity characteristics as shown in FIG. 7, and the peak wavelength of the spectral sensitivity is around 900 nm. On the other hand, the reference line has a spectral absorption peak at a wavelength of about 400 nm, which is far away from the peak of the sensor's spectral sensitivity (the reference line is visible to the naked eye because it is within the visible light range). The dragonfly is designed to have a spectral absorption peak at the same wavelength as the sensor, about 900 nm.
従って、トンボはセンサの分光感度内に陰を作りその陰
はセンサにより検知される。しかし基準線の陰はセンサ
の分光感度のピークから大きく離れたところにできるの
で、センサには検知されない。Therefore, the dragonfly creates a shadow within the spectral sensitivity of the sensor and the shadow is detected by the sensor. However, since the shadow of the reference line is formed far away from the peak of the sensor's spectral sensitivity, it is not detected by the sensor.
基準線の分光吸収波長領域が、センサの分光感度波長領
域と部分的に重なっても、ピーク波長がある程度離れて
いれば、センサの感度を電気的に補正したり、或いはフ
ィルタを用いたりして、基準線の陰がセンサには検知さ
れないようにできる。Even if the spectral absorption wavelength region of the reference line partially overlaps with the spectral sensitivity wavelength region of the sensor, if the peak wavelength is a certain distance apart, the sensitivity of the sensor can be corrected electrically or a filter can be used. , the shadow of the reference line can be prevented from being detected by the sensor.
尚、基準線は透明フィルムにではなく、透光板に直接設
けてもよい。Note that the reference line may be provided directly on the transparent plate instead of on the transparent film.
［発明の効果］
本発明では、基準線の分光吸収特性が、センサの分光感
度のピーク波長より離れた可視光の波長領域に分光吸収
のピーク波長を有し、トンボの分光吸収特性がセンサの
分光感度のピーク波長近くに分光吸収のピークがあるよ
うにしたので、基準線はセンサには検知されず、過って
基準線を基準に位置決めしてしまう恐れはない。[Effects of the Invention] In the present invention, the spectral absorption characteristic of the reference line has a peak wavelength of spectral absorption in a wavelength region of visible light that is distant from the peak wavelength of the spectral sensitivity of the sensor, and the spectral absorption characteristic of the dragonfly has a peak wavelength of spectral absorption of the sensor. Since the peak of spectral absorption is located near the peak wavelength of spectral sensitivity, the reference line is not detected by the sensor, and there is no risk of accidentally positioning based on the reference line.
また基準線はセンサには検知されないが、目には見える
ので、作業者が透光板上に原稿フィルムを置く際、トン
ボがセンサ近くに位置するよう迅速に配置でき、またセ
ンサが過ってゴミやキズを検知しそれを基準に位置決め
して、位置決め完了の表示を出してしまったときでも、
作業者が基準線と対比して目視で容易にその間違いを発
見できる等の利点がある。In addition, the reference line is not detected by the sensor, but is visible, so when the operator places the original film on the transparent plate, the registration mark can be quickly positioned near the sensor, and the sensor can be Even if dust or scratches are detected, positioning is performed based on that, and a positioning complete display is displayed.
This has the advantage that the operator can easily detect mistakes visually by comparing it with the reference line.
第１図は版板製作用の原稿フィルムの自動位置決め装置
を表す図、第２図は透光板付近の平面図第３図は原稿フ
ィルム、第４図はベースフィルムを示し、第５図は透光
板にベースフィルム及び原稿フィルムを載置した状態を
示す図、第６図は光源からセンサまでの光の経路を説明
する図、第７図はセンサの分光感度特性を示すグラフで
ある。
ｌ・・番装置本体
３・・・透光板
４．５・・・基準線
６．７．８・・・センサ
１６・・・原稿フィルム
１７・１トンボ
１８１・ベースフィルム
・・透明フィルムFig. 1 is a diagram showing an automatic positioning device for original film for printing plate production, Fig. 2 is a plan view of the vicinity of the translucent plate, Fig. 3 is a plan view of the vicinity of the transparent plate, Fig. 4 shows the base film, and Fig. 5 shows the original film. FIG. 6 is a diagram illustrating the path of light from the light source to the sensor, and FIG. 7 is a graph illustrating the spectral sensitivity characteristics of the sensor. No.l...Device body 3...Transparent plate 4.5...Reference line 6.7.8...Sensor 16...Original film 17.1 Register mark 181.Base film...Transparent film
Claims (1)
を有した透光板を設け、同透光板の上面にベースフィル
ムを固定しその上に原稿フィルムを重ね置き、原稿フィ
ルムの周辺部に設けられた複数の位置合わせ用のトンボ
を、複数個のセンサで検知し、センサからの信号により
原稿フィルムを移動させ、位置決めする、版板製作用の
原稿フィルムの自動位置決め装置に於いて、 基準線の分光吸収特性が、センサの分光感度のピーク波
長より離れた可視光の波長領域に分光吸収のピーク波長
を有し、一方、トンボの分光吸収特性がセンサの分光感
度のピーク波長近くに分光吸収のピークがあるようにし
たことを特徴とする版板製作用の原稿フィルムの自動位
置決め装置。[Claims] 1. A light transmitting plate having a reference line is provided on the upper surface of the main body of the device, which is equipped with a light source, a base film is fixed on the upper surface of the light transmitting plate, and an original film is placed on top of the base film. Original film for printing plate production in which multiple sensors detect multiple register marks for alignment provided on the periphery of the original film, and the original film is moved and positioned based on signals from the sensors. In the automatic positioning device of 1. An automatic positioning device for original film for printing plate production, characterized in that the peak of spectral absorption is near the peak wavelength of spectral sensitivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63215169A JPH0264544A (en) | 1988-08-31 | 1988-08-31 | Automatic positioning device for original film for producing form plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63215169A JPH0264544A (en) | 1988-08-31 | 1988-08-31 | Automatic positioning device for original film for producing form plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0264544A true JPH0264544A (en) | 1990-03-05 |
Family
ID=16667805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63215169A Pending JPH0264544A (en) | 1988-08-31 | 1988-08-31 | Automatic positioning device for original film for producing form plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0264544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5416828A (en) * | 1992-03-27 | 1995-05-16 | Aisin Seiki Kabushiki Kaisha | Interface device for an automobile telephone-set with a data transmission device |
-
1988
- 1988-08-31 JP JP63215169A patent/JPH0264544A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5416828A (en) * | 1992-03-27 | 1995-05-16 | Aisin Seiki Kabushiki Kaisha | Interface device for an automobile telephone-set with a data transmission device |
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