JPS58225346A - Method for measuring concentration - Google Patents
Method for measuring concentrationInfo
- Publication number
- JPS58225346A JPS58225346A JP57108464A JP10846482A JPS58225346A JP S58225346 A JPS58225346 A JP S58225346A JP 57108464 A JP57108464 A JP 57108464A JP 10846482 A JP10846482 A JP 10846482A JP S58225346 A JPS58225346 A JP S58225346A
- Authority
- JP
- Japan
- Prior art keywords
- density
- printed matter
- measuring
- measured
- production
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は印刷物の濃度分布を測定・する方法に関する。[Detailed description of the invention] The present invention relates to a method for measuring and measuring the density distribution of printed matter.
特に本発明は校正刷りと重刷り又は重刷り相互の印刷チ
ェックを行うための印刷物の濃度分布を測定する方法に
関するう
印刷時に校正刷りと重刷りの品質を検査したり、重刷り
において本適当枚数印刷した後の印刷物の品質を検査し
、夫々の品質を比較して品質に差がある場合にはインキ
の量を加減する等の操作を行い安定した印刷物を得るこ
とが行われている。In particular, the present invention relates to a method for measuring the density distribution of a printed matter to check printing between proof printing and overprinting or overprinting. After printing, the quality of the printed matter is inspected, the quality of each is compared, and if there is a difference in quality, operations such as adjusting the amount of ink are performed to obtain a stable printed matter.
このような場合、一般には熟練した技術者の目やカンに
頼っているが、特にカラー印刷物においてはこのような
検査だけに頼っていては高水準の印刷物を安定１−て得
ることが困難であり、まえ熟練者の養成は多大の日時を
要するので、印刷物の検査を容易に行うことのできる手
段が要望されている。In such cases, we generally rely on the eyes and senses of skilled technicians, but especially for color prints, it is difficult to consistently obtain high-quality prints if we rely only on such inspections. However, since it takes a large amount of time and time to train experts, there is a need for a means that can easily inspect printed materials.
このような手段の一つとして、印刷物の余白にベタ濃度
や網点濃度のカラーバッチ等を設け、これを各印刷物の
検査の規準と１７、これを肉眼で観察（７たり、濃度針
で測定することが行われている。One such method is to set up color batches of solid density and halftone dot density in the margins of printed matter, and use these as standards for inspection of each printed material. things are being done.
しかしながら、カラーパッチのみの検査では実際の図柄
が忠実に印刷されているか否かを知るにけ不十分であ６
゜又カラーバッチや図柄の特定のポイントにおける濃度
を微小反射スポットで測定１、各色に分解し゛（各々の
色濃度を例えば、デジタル値として示し２、これを各印
刷物について比較することも行われている。この方式に
より各印刷物について同一点を測定するには印刷物の位
置合わせが面倒で夛）す、印刷物を二次元的（Ｘ−Ｙ方
向）に移動させる必要があり、大きな印刷物を扱う場合
には大きな移動台を要する等の欠点がある。これの解決
策と（７て、小型で移動可能な反射濃度Ｗ［が用いられ
、カラーパッチや図柄の任意の場所に濃度計を皺いて所
望のポイントの濃度を測定することが行われている。こ
の方式では大きな移動台を必快としないが、各印刷物に
９いて正確に同一ポイントを測定することは困難であり
、濃度変化の少ない所を退入で測定している現状であり
、熟練者の技術を要することになる、また、上記の伺れ
の方式でも、限られたポイントのｉｌｌ［Ｌか測定ｌ〜
Ｃいないので、図柄全体の品質を決めるには不十分であ
る２、
さらに、印刷物の図柄全面積についての濃度を測定し、
各色の濃度の積分値を求め各印刷物についての各色濃度
の積分値を比較することも行われていも。この方式でＶ
よ全面積の積分された濃度値を知ることができるが、図
柄の個々の部がどのような濃度状態になっているかを知
ることはできない。However, inspection of only color patches is insufficient to know whether the actual design is faithfully printed6.
゜Also, the density at a specific point of a color batch or design is measured with a minute reflective spot 1, separated into each color (for example, each color density is shown as a digital value 2, and this is compared for each printed matter. In order to measure the same point on each printed matter using this method, alignment of the printed matter is troublesome and requires moving the printed matter two-dimensionally (X-Y direction), which is difficult when handling large printed matter. has drawbacks such as requiring a large moving platform. As a solution to this problem (7), a small and movable reflection density W is used to measure the density at a desired point by folding a densitometer at any location on a color patch or pattern. Although this method does not necessarily require a large moving table, it is difficult to accurately measure the same point on each printed matter, and the current situation is that areas with little density change are measured by moving in and out. In addition, even with the above-mentioned method, ill [L or measurement l ~
Since there is no C, it is insufficient to determine the quality of the entire design2.Furthermore, the density of the entire design area of the printed matter is measured,
It is also possible to calculate the integral value of the density of each color and compare the integral value of the density of each color for each printed matter. In this method, V
Although it is possible to know the integrated density value of the entire area, it is not possible to know the density state of each individual part of the design.
従って、本発明の目的は高水準の安定した品質の印刷物
を得るだめの濃度測定方法を提供するにある。Accordingly, an object of the present invention is to provide a method for measuring density by which printed matter of high standard and stable quality can be obtained.
本発明の他の目的は特に熟練しまた技術者を必要とせず
、比較的容易に校正刷り又は本刷りの印刷物の濃度を測
定する方法を提供するにある。Another object of the present invention is to provide a method for measuring the density of a proof or final print relatively easily and without the need for particularly skilled technicians.
すなわち、本発明は、校正刷りと本刷り又は本刷り相互
の品質を比較するために、夫々の印刷物の所定の点を起
点と［７、直線又は曲線にそって測定光のスポットを印
刷物と相対的にその上を移動さすて線上の濃度分布を測
定１−、スポットの移動距離に対応し７て濃度曲線を求
めることを特徴とする印刷物のｆＩｋ度測定方法。That is, in order to compare the quality of a proof print and a final print, or of the final prints, the present invention uses a predetermined point on each print as a starting point [7. 1. A method for measuring the fIk degree of a printed matter, characterized in that the density distribution on a line moved over the spot is measured (1), and a density curve is obtained in accordance with the moving distance of the spot (7).
本発明は単色の印刷物に対しても用いることかで＾るが
、特に多色印刷物に好適に用いられ、この場合には、例
えば、グリーン、レッド、ブルービジアル等の各色毎の
濃度分布を測定し、各色についての濃度曲線を求める。Although the present invention can be used for monochromatic printed matter, it is particularly suitable for multicolored printed matter. In this case, for example, the density distribution of each color such as green, red, bluevisual, etc. Then, find the density curve for each color.
以下、添付図面に示された本発明の一実施例を参照しつ
つ本発明を説明する。The present invention will now be described with reference to an embodiment of the invention illustrated in the accompanying drawings.
第１図は本発明の一態様を示す説明図でおって、カラー
印刷物の反射濃度を測定する場合管側示しである。図に
訃い（点線部分は本発明で用いる濃度計の一例であって
、タングステンランプの如き光源１、反射光をとり出す
測定アパーチャ２、レンズ６．４個のタイツ［ゴミシ−
４、夫りに対応しタフイルター５、フォトマルチプライ
ヤ又はフォトセルの如き光電変換素子６、及び対数増中
器７の光学系と、移動量検出ローラ８及びバルスジエネ
１ノータ９よりなる移動検出システムが収容されている
。FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and shows the tube side when measuring the reflection density of a color printed matter. The dotted line in the figure is an example of a densitometer used in the present invention, which includes a light source 1 such as a tungsten lamp, a measurement aperture 2 for taking out the reflected light, and 6.4 lenses.
4. A movement detection system consisting of an optical system of a tough filter 5, a photoelectric conversion element 6 such as a photomultiplier or a photocell, and a logarithmic intensifier 7, a movement amount detection roller 8, and a pulse generator 1 node 9 corresponding to the width. is accommodated.
この濃度針をカラー印刷物等の被測定物１０上に載せ、
濃度針の濃度測定孔１１を被測定物の予め定められた点
に合わせる。Place this density needle on the object to be measured 10 such as a color printed matter,
The concentration measuring hole 11 of the concentration needle is aligned with a predetermined point on the object to be measured.
第２図は印部１１物−例を示す平面図であって、図柄２
１０余白に位置決定用のレジスタマーク２２が印刷され
ている。なお、２３は同様に余白部に印刷されているカ
ラーバッチである。FIG. 2 is a plan view showing an example of the marking part 11, and the design 2
A register mark 22 for position determination is printed in the 10 margin. Note that 23 is a color batch similarly printed in the margin area.
前記の濃度針の測定孔１１を位−°させる印刷物の起点
として上記した如き余白部に印刷されているレジスタマ
ーり２２を利用してもよく、又、特別に測定マーク２４
を余白部の適当なところに印刷したものを利用し７〔も
よい。なお、２５は測定ラインの一例を示す。The register mark 22 printed in the margin as described above may be used as the starting point of the printed matter for positioning the measurement hole 11 of the density needle, or a special measurement mark 24 may be used.
You can also print 7 in an appropriate place in the margin. Note that 25 indicates an example of a measurement line.
測定時にｅよ測定孔１１に光を照射しつつ濃度針を印刷
物の図柄の上を一定方向に移動させる（直線でも曲線で
もよい）。また、必要に応じてカラーパッチ１６上を移
動させてもよい。さらに、同一起点から複数の異なる方
向に移動させてもよく、又複数個の起点から夫／、の線
上を移動させてもよいこと社勿論である。何れの場合Ｃ
も夫々の印刷物について同じ起点で同じ方向に移動させ
不ことが必要である。At the time of measurement, the density needle is moved in a certain direction over the pattern of the printed material (e) while irradiating light into the measurement hole 11 (it may be a straight line or a curved line). Further, it may be moved on the color patch 16 as necessary. Furthermore, it goes without saying that the object may be moved in a plurality of different directions from the same starting point, or may be moved along a line from a plurality of starting points. In either case C
It is also necessary to move each printed product from the same starting point in the same direction.
々ト・、上ｈＩ：説明は好ましい態様とし゛℃被測定物
ケ固７ｒｌ ｌ 、、濃度側を移動させる場合について
説明しｌζか、場合によ−）７−は濃度計を固定［２、
被測定物を移動させることも可能である。First, the explanation will be based on the preferred embodiment, and the case where the concentration side is moved is explained.
It is also possible to move the object to be measured.
測定孔１０を）＋４−）て被測定物から反射された反射
光＆、、ｊｉ７パーチヤ２とレンズ６を通ってダイクロ
ミラー ４に達ｊ２、例えばグリーン（Ｇ）、レッド（
Ｒ１、フルー（ｆ３）、及びビンアル（Ｖｌの各党に分
解され、夫々光電変換素子６に人って電気信号に変換さ
れ次いで、対数増ｒＩＪ器７に入る。The reflected light reflected from the object to be measured through the measuring hole 10 ()+4-) passes through the percha 2 and lens 6 and reaches the dichroic mirror 4, for example, green (G), red (
The signal is decomposed into R1, F3, and Vl, each of which is converted into an electric signal by a photoelectric conversion element 6, and then enters a logarithm intensifier 7.
＃度訂からの各色仁とに光電変換及び増巾された信号す
よ、次いで例えはペン譬きＡシロスコープの如き記録部
の各色の記録ペン１１に入り、記録紙１２に各色毎にそ
の濃度仙、が記録される。# The signals photoelectrically converted and amplified for each color from the degree correction are then input to the recording pen 11 of each color in the recording section, such as a pen analogue to an A cilloscope, and are recorded on the recording paper 12 for each color. The concentration is recorded.
この場合、濃度計には移動量検出ローラー８が設けられ
ているので濃度計の移動に伴なりでローラー８が回転Ｌ
７、パルスジェネレータ９から同期パルスを発生させる
。In this case, since the densitometer is provided with a movement amount detection roller 8, the roller 8 rotates L as the densitometer moves.
7. Generate a synchronizing pulse from the pulse generator 9.
ペン書キ＠シロスコープの記録紙送りロー／ｌ／Ｉｃは
同期側−１モータ１４が連動（７−Ｃおり、ｆ１４度割
のハルスシエネレー ター９からの同期パルス信号が同
期駆！１１１１モータ１４をＩＮ４度訂０移動と同期的
に駆動し、紙送りローラから記録紙をこれに同期し７て
送り、図示−する如き印刷物の直線又ｔま曲線上のその
長さに対応！−２た４色分Ｍ濃度曲線が得られる。The recording paper feed low/l/Ic of the pen writing@cilloscope is synchronized with the synchronous side-1 motor 14 (7-C). It is driven synchronously with the IN 4 degree correction 0 movement, and the recording paper is fed from the paper feed roller in synchronization with this, corresponding to the length of the printed matter on a straight line or curve as shown in the figure. A color M density curve is obtained.
前記したように、このような濃度曲線を校正刷と本刷り
、又は本刷り相互の各印刷物について作成し、これを比
較することによって、図柄の直線又は曲線上の濃度分布
を知ることができ、上記の例の如き４色分解曲線とする
場合には骸線上の色濃度に応じて４つの濃度曲線が得ら
れるから、各色の曲線について印刷物の品質を比較する
ことができる３、
第５図は本発明に用いる濃度計の他の態様を示すもので
、オプチカルハイパーを用いることにより、移動させる
濃度計の部分を蘭学にすることができる。すなわち、図
において、点線で示す部分／（１＋）１１＋ＨＪｌ！
ｌ ＃［ｔｅｌ。ｏｍ＋−ｃ’あ−□、１．１
１アパーチヤ６２、レン′ズ６６、と号ブチカルハイパ
ー２４の入光端部とよりなる光学系と、移動量４６ 出
口−２６６とパルスジェネレータ５７よりなる移１ｒｌ
ｌ検出系が収められ−Ｃいる。オプチカル／・イバーの
他端（↓レンズ３５を通して前記したようなダイクロミ
ラーに光を導き以下前記と同様フィルターにて各色に分
解し、これを光電変換、増巾して濃度分布曲線として記
録する。この態様においでは、ダイクロミラーから記録
部門に到る一連の部分を固定Ｌ 、又は一体に１７てお
くことができる。As mentioned above, by creating such a density curve for each printed matter of the proof printing and the actual printing, or the actual printing, and comparing them, it is possible to know the density distribution on the straight line or curve of the design. When using four color separation curves as in the example above, four density curves are obtained depending on the color density on the skeleton line, so the quality of printed matter can be compared for each color curve3. This shows another aspect of the densitometer used in the present invention, and by using an optical hyper, the part of the densitometer to be moved can be made into a Western style. That is, in the figure, the part indicated by the dotted line/(1+)11+HJl!
l #[tel. om+-c'a-□, 1.1
1 an optical system consisting of an aperture 62, a lens 66, and a light incident end of a buttical hyper 24, a displacement 46, an exit 266, and a pulse generator 57;
1 detection system is housed in -C. The light is guided through the other end of the optical fiber (↓lens 35) to a dichroic mirror as described above, and then separated into each color by a filter similar to the above, which is photoelectrically converted, amplified, and recorded as a density distribution curve. In this embodiment, the series of parts from the dichroic mirror to the recording section can be fixed or integrated 17.
＠４図は本発明で用いる記録部門の他の態様を示す説明
図であって、第１図で４色に分解され、光電変換後対数
増巾アンプワで増巾された各信号をパルスジェネレータ
ー９からの移動同期〕くルス信号と共にメモリー機構４
１に記憶させておき、所望時に濃度分布グラフ４２とし
で取り出ｌ〜てもよく、又これをブラウン管（ＣＲＴ）
に表示してもよい。なお、ブラウン管に表示する場合に
は複数個のブラウン管を用いて比較してもよく、１つの
ブラウン管に複数組の濃度分布グラフを表示！〜てもよ
い、、メモリー機構を用いる場合には比較すべき印刷物
を２種又はそれ以上測定してこれを記憶しておｒｋ、そ
れらの濃度分布を、同時に観察することができる。Figure @4 is an explanatory diagram showing another aspect of the recording section used in the present invention, in which each signal separated into four colors in Figure 1 and amplified by a logarithmic amplifier after photoelectric conversion is sent to a pulse generator 9. movement synchronization] Memory mechanism 4 along with the pulse signal
The concentration distribution graph 42 may be stored in memory in the memory 1 and taken out as the density distribution graph 42 when desired, or it may be stored on a cathode ray tube (CRT).
may be displayed. In addition, when displaying on a cathode ray tube, you can use multiple cathode ray tubes for comparison, and display multiple sets of concentration distribution graphs on one cathode ray tube! When a memory mechanism is used, two or more types of printed matter to be compared are measured and stored, and their density distributions can be observed simultaneously.
以上、本発明を反射光によりｍ度測定する場合について
説明したが、ネガフィルムやポジフィルムの濃度測定を
透過光によって行う場合にも利用できる。The present invention has been described above with respect to the case of measuring m degrees using reflected light, but it can also be used when measuring the density of negative or positive films using transmitted light.
上記したように本発明によるときは、比較的容易な操作
により図柄の上の線上の濃度分布によって校正刷シと本
刷り又は本刷り相互の品質を比較することができるので
、前記した如き従来の方式と較べて図柄に忠実な濃度分
布について比較することができ、高水準で安定した印刷
物を得ることがでべる。As described above, according to the present invention, it is possible to compare the quality of the proof sheet and the actual printing or between the actual printings based on the density distribution on the line above the design with a relatively easy operation. It is possible to compare the density distribution that is faithful to the pattern compared to other methods, and it is possible to obtain stable printed matter with a high standard.
第１図は本発明方法の１実施態様を示す説明図、第２図
は被測定物と］〜て印刷物の１例を示す平面図、第５図
は本発明で用いる濃度１ｔの移動部分の１例を示す説明
図、第４図は本発明で用いる記録部の１例を示す説明図
である。
図において、１−−一光源、３−−−レンズ。
４−ｍ−ダイクロミラ−５−ｍ−フイルター。
６−−−光電変換素子、・、７一−一対数増幅器。
１１−一一記録ペン、１２−−−オシロスコープ。
８−一一移動量検出ローラ、９−−−パルスジェネレー
ター、１３−−一紙送りローラ、’１４−−−同期駆動
モーター、 ２１−−一図柄、２２−−−レジスタマー
ク、２５−−一測定ライン、３４−−ｔプチカルファ（
バー、４１−ｍ−メモリー機構、である。
（を勤１３名）
＠２図
第３図
第 ４１１FIG. 1 is an explanatory diagram showing one embodiment of the method of the present invention, FIG. 2 is a plan view showing an example of a printed matter with an object to be measured, and FIG. FIG. 4 is an explanatory diagram showing one example of a recording section used in the present invention. In the figure, 1--one light source, 3--lens. 4-m-Dichromirror-5-m-filter. 6---Photoelectric conversion element, 7--logarithmic amplifier. 11-11 Recording pen, 12--Oscilloscope. 8-11 movement detection roller, 9---pulse generator, 13--sheet feed roller, '14--synchronous drive motor, 21--1 design, 22--register mark, 25--1 Measuring line, 34--t petit calf (
bar, 41-m-memory mechanism. (13 people working) @Figure 2 Figure 3 Figure 411
Claims (1)
ためｔｔＣ１夫々の印刷物の所定の点を起点とし、直線
又會よ曲線にそって測定光のスポットを印刷物と相対的
にその上を移動させて線上の濃度分布を測定し、スポッ
トの移動距離に対応して濃度曲線を求めることを特徴と
する印刷物の濃度測定方法。 ２） 印刷物が多色刷り印刷物であり、濃度曲線が色分
解濃度曲線よりなる特許請求の範囲第（１１項に記載の
濃度測定方法。 ６）測定する起点として印刷物のレジスタマークを利用
する特許請求の範囲第（１）項に記載の濃度測定方法。[Claims] 1) In order to compare the quality of proof printing and overprinting or overprinting, starting from a predetermined point on each printed matter of ttC1, a spot of measurement light is applied along a straight line or a curved line to the printed matter. A method for measuring the density of a printed matter, characterized by measuring the density distribution on a line by moving the spot relatively thereon, and determining a density curve corresponding to the distance the spot moves. 2) A density measuring method according to claim 11, in which the printed matter is a multicolor printed matter and the density curve is a color separation density curve. 6) A method for measuring density according to claim 11, in which the printed matter is a multicolor printed matter and the density curve is a color separation density curve. The concentration measuring method according to scope item (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57108464A JPS58225346A (en) | 1982-06-25 | 1982-06-25 | Method for measuring concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57108464A JPS58225346A (en) | 1982-06-25 | 1982-06-25 | Method for measuring concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58225346A true JPS58225346A (en) | 1983-12-27 |
Family
ID=14485423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57108464A Pending JPS58225346A (en) | 1982-06-25 | 1982-06-25 | Method for measuring concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58225346A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62146633A (en) * | 1985-12-10 | 1987-06-30 | ハイデルベルガ− ドルツクマシ−ネン アクチエンゲゼルシヤフト | Method and device for controlling inking of printer |
| JPS632144U (en) * | 1986-06-23 | 1988-01-08 | ||
| JPS63135252A (en) * | 1986-11-28 | 1988-06-07 | Toppan Printing Co Ltd | Apparatus for inspecting printing quality |
| JPH03172740A (en) * | 1989-11-30 | 1991-07-26 | Hooya Shiyotsuto Kk | Surface reflected light measurement device for moving body |
-
1982
- 1982-06-25 JP JP57108464A patent/JPS58225346A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62146633A (en) * | 1985-12-10 | 1987-06-30 | ハイデルベルガ− ドルツクマシ−ネン アクチエンゲゼルシヤフト | Method and device for controlling inking of printer |
| JPS632144U (en) * | 1986-06-23 | 1988-01-08 | ||
| JPS63135252A (en) * | 1986-11-28 | 1988-06-07 | Toppan Printing Co Ltd | Apparatus for inspecting printing quality |
| JPH03172740A (en) * | 1989-11-30 | 1991-07-26 | Hooya Shiyotsuto Kk | Surface reflected light measurement device for moving body |
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