JPH0723952B2 - Method of managing printing conditions in photo printing - Google Patents
Method of managing printing conditions in photo printingInfo
- Publication number
- JPH0723952B2 JPH0723952B2 JP59014896A JP1489684A JPH0723952B2 JP H0723952 B2 JPH0723952 B2 JP H0723952B2 JP 59014896 A JP59014896 A JP 59014896A JP 1489684 A JP1489684 A JP 1489684A JP H0723952 B2 JPH0723952 B2 JP H0723952B2
- Authority
- JP
- Japan
- Prior art keywords
- printing
- color
- density
- value
- photographic paper
- 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.)
- Expired - Lifetime
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
- G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
- G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Description
【発明の詳細な説明】 （発明の技術分野） この発明は、写真焼付における焼付条件を常に一定とす
るための管理方法に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a management method for keeping a consistent printing condition in photo printing.
（発明の技術的背景とその問題点） カラー写真プリントを高品質に作成するためには、ネガ
フイルムの現像，写真焼付条件及びカラー写真ペーパー
の現像を適正に管理する必要がある。(Technical background of the invention and its problems) In order to produce a high quality color photographic print, it is necessary to properly manage the development of the negative film, the photographic printing conditions and the development of the color photographic paper.
現在、一般的な写真焼付装置では標準ネガ（ユーザの平
均的濃度値を有するネガ）を用いて写真焼付を行ない、
写真焼付が一定濃度値になるように写真焼付条件を調整
している。しかしながら、標準ネガは写真焼付装置とカ
ラー写真ペーパー現像の関係を適正にするものであり、
ネガ現象の影響を修正するために写真焼付装置を調整す
る方法として、多数のネガの平均濃度値を管理すること
が知られている。この管理は、写真焼付を行なう際のネ
ガフイルムの測光値を用いて行なうことができる。しか
しながら、標準ネガは通常オールシーズンにわたる平均
的な被写体と同じ濃度をもち、標準的に現象されたもの
が現像所に供給されるようになっており、現像所の実際
に応じたネガ特性が入って作成されていない欠点があ
る。このために、大量のカラー写真プリントの濃度，色
味を観察して、得率が高くかつ高品質を保つような修正
を必要とし、これには高度の熟練がいる。また、最初に
標準ネガで目標濃度に合わせても、大量の写真焼付を行
なうと、現像液の空気酸化、補充液の過不足等によって
写真焼付条件が変化してしまい、適正な写真焼付を行な
い得なくなるといった欠点があった。Currently, in a general photo printing apparatus, a standard negative (a negative having a user's average density value) is used to perform photo printing,
The photographic printing conditions are adjusted so that the photographic printing has a constant density value. However, standard negatives make the relationship between photographic printing equipment and color photographic paper development appropriate.
It is known to manage the average density value of a large number of negatives as a method of adjusting a photographic printing apparatus to correct the effects of the negative phenomenon. This control can be performed by using the photometric value of the negative film at the time of performing photographic printing. However, standard negatives usually have the same density as the average subject over the whole season, and what has become a standard phenomenon is supplied to the photofinishing lab. There is a drawback that has not been created. For this reason, it is necessary to observe the density and color tone of a large amount of color photographic prints and make corrections to maintain a high yield and high quality, which requires a high degree of skill. Even if the standard negative is adjusted to the target density at the beginning, if a large amount of photographic printing is carried out, the photographic printing conditions will change due to air oxidation of the developing solution, excess and deficiency of the replenisher, etc. It had the drawback of not being able to get it.
（発明の目的） この発明は上述のような事情からなされたものであり、
標準ネガを用いることなく、常に写真焼付装置の焼付条
件を一定に管理するための方法を提供することを目的と
している。(Object of the Invention) The present invention has been made under the circumstances described above.
It is an object of the present invention to provide a method for constantly controlling the printing conditions of a photo printing apparatus without using a standard negative.
（発明の概要） この発明は写真焼付における焼付条件管理方法に関する
もので、写真焼付処理されたカラー写真ペーパーを、ペ
ーパー現象処理部の出口付近に取付けたセンサで３原色
毎の濃度を連続的に多数毎にわたり測定して積算し、前
記積算値から各色の平均濃度を求め、前記平均濃度値が
予め定めた値の範囲内に入っているかどうかを判定し、
前記範囲からはずれた場合、前記範囲に入るように予め
求めた各色毎の露光量とプリント濃度との関係から補正
露光量を求め、焼付条件を修正して管理するようにした
ものである。(Summary of the Invention) The present invention relates to a method for controlling printing conditions in photographic printing, in which color photographic paper subjected to photographic printing is continuously measured with a sensor mounted near the exit of a paper phenomenon processing unit to determine the density of each of the three primary colors. Measure and integrate over a large number, determine the average density of each color from the integrated value, determine whether the average density value is within the range of a predetermined value,
When it is out of the above range, the corrected exposure amount is obtained from the relationship between the exposure amount of each color and the print density which are obtained in advance so as to fall within the above range, and the printing conditions are corrected and managed.
（発明の実施例） 第１図はこの発明方法を適用した写真焼付装置の一例を
示すものであり、ネガフイルム１はイエロー（Ｙ），マ
ゼンタ（Ｍ）及びシアン（Ｃ）のフィルタ２を通して光
源３で照明されるようになっており、ネガフイルム１か
らの透過光はレンズ系４及びブラックシャッタ５を経て
焼付用のカラー写真ペーパー６に露光されるようになっ
ている。カラー写真ペーパー６はフィードローラ61に巻
回されており、焼付部で露光されたカラー写真ペーパー
６は現像処理部７で現像，漂白，定着，水洗及び乾燥の
処理を施されて後、ローラ62に巻取られるようになって
いる。そして、この発明では現像処理部７とローラ62と
の間に、焼付されたカラー写真ペーパー面を照射する光
源11及びカラー写真ペーパー面からの反射光を受光する
フォトダイオード等のセンサ10を設けており、センサ10
は焼付されたカラー写真画像の濃度をＲ（赤）,G（緑）
及びＢ（青）毎に検出するようになっている。ここに、
センサ10は第２図に示すように焼付されたカラー写真ペ
ーパー６の搬送路に対して、画像コマ61を横切る位置に
RGB毎に３列に整列されて設けられている。すなわち、
Ｒ情報を検出する３個のセンサ11,G情報を検出する３個
のセンサ12及びＢ情報を検出する３個のセンサ13画像濃
度検出用のセンサ10を形成し、各センサ11〜13がカラー
写真ペーパー６の焼付された画像コマ61を全画面的にか
つRGB毎に走査できるように配列されている。(Embodiment of the Invention) FIG. 1 shows an example of a photographic printing apparatus to which the method of the present invention is applied. A negative film 1 is a light source through a filter 2 for yellow (Y), magenta (M) and cyan (C). The transmitted light from the negative film 1 is exposed to the color photographic paper 6 for printing through the lens system 4 and the black shutter 5. The color photographic paper 6 is wound around a feed roller 61, and the color photographic paper 6 exposed in the printing section is subjected to development, bleaching, fixing, washing and drying in a developing section 7, and then a roller 62. It is designed to be wound up on. In the present invention, a light source 11 for irradiating the surface of the color photographic paper and a sensor 10 such as a photodiode for receiving the reflected light from the surface of the color photographic paper are provided between the developing processing section 7 and the roller 62. Cage, sensor 10
Is the density of the printed color photographic image R (red), G (green)
And B (blue) are detected. here,
The sensor 10 is located at a position across the image frame 61 with respect to the conveyance path of the color photographic paper 6 printed as shown in FIG.
They are arranged in 3 columns for each RGB. That is,
Three sensors 11 for detecting R information, three sensors 12 for detecting G information, and three sensors 13 for detecting B information form a sensor 10 for detecting image density, and each of the sensors 11 to 13 is a color sensor. The printed image frames 61 of the photographic paper 6 are arranged so that they can be scanned on a full screen and for each RGB.
ここにおいて、この発明ではセンサ11〜13で写真焼付さ
れた画像コマ61のRGB毎の濃度値を走査ライン62,63,64
に沿って連続的に測定し、その測定値を順次AD変換器で
ディジタル量に変換した後にカウンタ等でRGB毎に積算
する。そして、その積算値から求めた平均値のRGBのバ
ランス状態に基づき、写真焼付装置のフィルタ２及び光
源３の露光時間等を制御することにより、常に焼付条件
を最適な状態に管理することができる。ネガフイルムで
はフイルム特性の非直線性，乳番差，経時，光源差等で
バラツキやすいが、よく知られたいわゆるエバンスの法
則が成立し、良く制御された写真焼付装置において写真
焼付されたカラー写真画像は、前述のバラツキが軽減さ
れているためネガフィルムに対するエバンスの法則より
もより厳密に成立する。このことから、良く管理されて
いる写真焼付装置で焼付されたカラー写真ペーパーの画
像濃度の統計的な平均値は、常に一定となる。したがっ
て、この平均値を常に保つように、上記RGBの積算値に
基づいて写真焼付装置の焼付条件を制御すれば良い。Here, in the present invention, the density values for each RGB of the image frame 61 photographed by the sensors 11 to 13 are scanned lines 62, 63, 64.
Are continuously measured along with, and the measured values are sequentially converted into digital values by an AD converter, and then integrated for each RGB by a counter or the like. Then, by controlling the exposure time and the like of the filter 2 and the light source 3 of the photographic printing apparatus based on the RGB balance state of the average value obtained from the integrated value, the printing conditions can always be managed in the optimum state. . Negative films tend to vary due to non-linearity of film characteristics, milk number difference, aging, light source difference, etc., but the well-known so-called Evans' law is established, and color photographs are printed in a well-controlled photographic printing apparatus. The image is more rigorous than Evans' law for negative films because of the reduced variations described above. From this fact, the statistical average value of the image density of color photographic paper printed by a well-controlled photographic printing apparatus is always constant. Therefore, the printing conditions of the photographic printing apparatus may be controlled based on the RGB integrated values so that this average value is always maintained.
第３図は（Ｒ−Ｇ）の濃度量を横軸にとり、（Ｇ−Ｂ）
の濃度量を縦軸にとった色座標の例を示すものであり、
写真焼付の条件を適正に調整した場合の色バランスはた
とえばエリア20の中に入っている。したがって、センサ
10で焼付済カラー写真ペーパーのRGB毎の濃度を測定
し、その積算後の平均値がたとえばエリア20の外のP1点
となった場合には、この点P1がエリア20の中に入るよう
に焼付条件を変更すればよく、同様にP2点の位置に食み
出した場合にはこれをエリア20内に入るように焼付条件
を変更すれば良い。In FIG. 3, the horizontal axis represents the concentration amount of (RG), and (GB)
Shows an example of color coordinates in which the vertical axis represents the density amount of
The color balance when the conditions for photographic printing are properly adjusted is within the area 20, for example. Therefore, the sensor
Measure the density for each RGB of the printed color photographic paper at 10, and if the average value after integration is, for example, the P1 point outside area 20, make sure that this point P1 is inside area 20. It is only necessary to change the baking condition. Similarly, when it sticks out at the position of point P2, the baking condition may be changed so that it enters the area 20.
このような条件変更はたとえば第４図に示すように、RG
B毎の濃度Ｄに対する補正露光量（露光時間，光量）log
Eをカラー写真ペーパー６の濃度曲線として予め測定し
ておき、たとえばＲ情報の適正な濃度値D0に対する光量
がE0である場合、濃度値がD1に低下した場合には濃度値
D1が適正値D0となるように、光量ＥをE1からE0に増加さ
せればよい。このような補正光量は、写真焼付装置の露
光時間又はフィルタ２を各色毎に補正することにより実
現することができ、修正は手動でも自動でも可能であ
る。Such a condition change can be performed by, for example, RG as shown in FIG.
Corrected exposure amount (exposure time, light amount) for density D for each B log
E is measured in advance as a density curve of the color photographic paper 6, and, for example, when the light amount for the proper density value D 0 of the R information is E 0 , when the density value drops to D 1 , the density value
The light amount E may be increased from E 1 to E 0 so that D 1 becomes the appropriate value D 0 . Such a correction light amount can be realized by correcting the exposure time of the photo printing apparatus or the filter 2 for each color, and the correction can be performed manually or automatically.
なお、上述ではカラー写真ペーパーの画像濃度を反射光
で検出するようにしているが、透過光で検出するように
しても良い。また、上述ではカラー写真ペーパーの画像
コマ部分に加えて焼付されていない白色部（第２図の65
部分）をも積算するようにしているが、画像コマ部分の
検出を行なって白色部の情報を積算しないようにした
り、白色部の面積を計算してRGB毎の積算値から減算す
るようにしても良い。Although the image density of color photographic paper is detected by reflected light in the above description, it may be detected by transmitted light. In addition, in the above description, in addition to the image frame portion of the color photographic paper, the white portion not printed (see 65 in FIG. 2).
Part) is also integrated, but it is possible to detect the image frame part so that the information of the white part is not integrated, or to calculate the area of the white part and subtract it from the integrated value for each RGB. Is also good.
さらに、カラー写真ペーパーの画像の高彩度部や高濃度
部の即光値を積算しないようにすることで、正確な平均
値をより少ない数の画像コマから得ることが可能にな
る。また、ネガの種類やネガの濃度情報から類別して測
光値を積算することで、さらに精度が向上する。Further, by not integrating the immediate light values of the high saturation portion and the high density portion of the image of the color photographic paper, it becomes possible to obtain an accurate average value from a smaller number of image frames. Further, the accuracy is further improved by classifying the negative type and the negative density information and integrating the photometric values.
積算値から求める平均値はカラー写真ペーパーの画面相
当の面積についての平均値でよいのであるが、とくにこ
の面積に限定されるものではない。また、平均値化の演
算は必ずしも測光毎に行なう必要はなく、一定の写真焼
付量，一定の期間，一定の作業時に演算を行なって、焼
付条件を管理すればよい。平均値の管理は、実施例のよ
うにR,G,Bの変換値でもよいし、単独の値でもよい。The average value obtained from the integrated value may be the average value for the area corresponding to the screen of the color photographic paper, but is not limited to this area. Further, the calculation of the average value does not necessarily have to be performed for each photometry, and the calculation may be performed at a constant photographic printing amount, a fixed period, and a fixed work to manage the printing conditions. The management of the average value may be a conversion value of R, G, B as in the embodiment or a single value.
センサは実施例の如く多数個配列してもよいし、R,G,B
各１個で広い面積を測定し得るようにしてもよい。この
場合、カラー写真ペーパーの画面上の測定域がほぼ連続
して測定されるならば、間決的な測定でもよい。Multiple sensors may be arranged as in the embodiment, or R, G, B may be arranged.
A large area may be measured with each one. In this case, if the measurement area on the screen of the color photographic paper is measured almost continuously, intermittent measurement may be performed.
（発明の効果） 以上のようにこの発明方法によれば、写真焼付されたカ
ラー写真ペーパーの濃度を各色毎に求めて積算し、大量
に焼付されてその濃度平均値のバランスが崩れた場合に
は、正常なバランス状態に修正を行なうことができるの
で、常に一定の条件で大量のネガフイルムからの写真焼
付を行なうことが可能となる。また、標準ネガを使用し
て条件管理する必要もないので、写真焼付の高能率化を
実現することができる。(Effects of the Invention) As described above, according to the method of the present invention, the densities of photographic-printed color photographic papers are calculated for each color and integrated, and when a large amount is printed and the balance of the density averages is lost. Can be corrected to a normal balance state, so that it is possible to always carry out photo printing from a large amount of negative film under constant conditions. Further, since it is not necessary to control the conditions by using a standard negative, it is possible to realize high efficiency of photo printing.
第１図はこの発明方法を適用した写真焼付装置の一例を
示す構成図、第２図はカラー写真ペーパーとセンサの配
列の関係を示す図、第３図及び第４図はそれぞれこの発
明における焼付条件の変更の様子を説明するための図で
ある。 １……ネガフイルム、２……フィルタ、3,11……光源、
４……レンズ系、５……ブラックシャッタ、６……カラ
ー写真ペーパー、７……現像処理部、10,11〜13……セ
ンサ。FIG. 1 is a block diagram showing an example of a photographic printing apparatus to which the method of the present invention is applied, FIG. 2 is a diagram showing the relationship between the arrangement of color photographic paper and sensors, and FIGS. 3 and 4 are the printing in this invention. FIG. 6 is a diagram for explaining how conditions are changed. 1 ... Negative film, 2 ... Filter, 3,11 ... Light source,
4 ... Lens system, 5 ... Black shutter, 6 ... Color photographic paper, 7 ... Development processing unit, 10, 11-13 ... Sensor.
Claims (1)
を、ペーパー現像処理部の出口付近に取付けたセンサで
３原色毎の濃度を連続的に多数枚にわたり測定して積算
し、前記積算値から各色の平均濃度値を求め、前記平均
濃度値が予め定めた値の範囲内に入っているかどうかを
判定し、前記範囲からはずれた場合、前記範囲に入るよ
うに予め求めた各色毎の露光量とプリント濃度との関係
から補正露光量を求め、焼付条件を修正して管理するよ
うにしたことを特徴とする写真焼付における焼付条件管
理方法。1. A photographic printing-processed color photographic paper is continuously measured over a number of sheets for the density of each of the three primary colors by a sensor mounted near the outlet of the paper development processing unit, and the densities are calculated for each color. The average density value of is determined, it is determined whether or not the average density value is within the range of a predetermined value, and if the average density value is out of the range, the exposure amount for each color obtained in advance to fall within the range and A method for managing a printing condition in photo printing, wherein a corrected exposure amount is obtained from the relationship with the print density, and the printing condition is corrected and managed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59014896A JPH0723952B2 (en) | 1984-01-30 | 1984-01-30 | Method of managing printing conditions in photo printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59014896A JPH0723952B2 (en) | 1984-01-30 | 1984-01-30 | Method of managing printing conditions in photo printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159738A JPS60159738A (en) | 1985-08-21 |
| JPH0723952B2 true JPH0723952B2 (en) | 1995-03-15 |
Family
ID=11873751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59014896A Expired - Lifetime JPH0723952B2 (en) | 1984-01-30 | 1984-01-30 | Method of managing printing conditions in photo printing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723952B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0640194B2 (en) * | 1985-10-15 | 1994-05-25 | 富士写真フイルム株式会社 | How to set and manage photo printing conditions |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630121A (en) * | 1979-08-22 | 1981-03-26 | Fuji Photo Film Co Ltd | Controlling method of exposure for photographic printing |
| JPS57128330A (en) * | 1981-01-31 | 1982-08-09 | Konishiroku Photo Ind Co Ltd | Printing process for color print |
-
1984
- 1984-01-30 JP JP59014896A patent/JPH0723952B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60159738A (en) | 1985-08-21 |
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