JPH06236018A - Photograph printing and developing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the process of photoprint development and improve the quality by obtaining a means that can easily control the liquid in a photoprint apparatus. [Structure] A photographic printing apparatus is provided which is capable of performing a standard exposure under a constant condition which has been conventionally applied to a control strip, and which is provided with means for measuring a density after development processing and presenting a processing liquid state from the result. To do. Prepare a negative for standard exposure, switch the light source between normal photoprinting and standard exposure, measure the density of the photosensitive material obtained by processing after the standard exposure, and calculate the processing liquid state from the measurement results. A control unit that performs determination and display is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic printing / developing apparatus for printing / developing a light-sensitive material. In particular, it relates to an apparatus for checking the state of the processing liquid and managing the liquid.

[0002]

2. Description of the Related Art Conventionally, a photographic printing / developing apparatus for printing / developing a light-sensitive material is composed of an exposure section, a development processing section, a drying section, etc., and a photographic printing / developing apparatus incorporating a CPU for instructing control of each section. Is widespread. With the progress of automation, meticulous attention is paid to management of processing solutions in the process of developing a photosensitive material.

The management of the processing liquid in the development processing section of the photographic printing and developing apparatus is carried out mainly by developing a photosensitive material called a control strip and confirming the degree of fatigue of the liquid from the result of density measurement. There is. The control strip is a photographic paper with a constant reproduction characteristic, a constant light intensity,
It is an undeveloped paper that has been exposed under reference exposure conditions specified by exposure time, light quality and the like.

Since the control strip needs to be processed in the dark, it is handled by filling a dark box called a const holder in a dark room. It is set together with the const holder at a location where it is introduced into the development processing section in the photoprinting development apparatus.

[0005]

As described above, the conventional liquid management method in the photoprinting / developing apparatus is carried out based on the result of developing the control strip using the const holder. However, since the const holder is intended to shield light, the mechanism for accommodating the control strip is complicated and the filling operation is troublesome.

Even when the const holder is set in the photographic printing / developing device, the work is complicated because the light is completely shielded. In order to confirm the state of the processing liquid, it is necessary to suspend the normal photographic printing operation and set the const holder filled with the control strip inside the photographic printing and developing apparatus.

As a guideline for liquid management, it is necessary to use a control strip that has been exposed under a certain standard exposure condition, so that the exposure is performed separately from the normal photographic printing process. It is necessary to prepare a conventional control strip that is independently manufactured in advance for the process of using the photoprinting and developing device.

Since the work of filling the control strip and setting the const holder is complicated and the control strip is specially prepared as a material for liquid management, a liquid using such a control strip is used. It is often done without management. From the processing frequency, the operating time of the photographic printing and developing device, the quality of the obtained photograph, and the like, the liquid is managed based on the so-called familiarity.

In this case, there is a risk that the liquid management will be improper due to a wrong judgment and the quality of the development processing will be deteriorated. This requires skill in operating the apparatus, which is contrary to the desire for automation and simplification of processing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a means for easily controlling a liquid in a photographic printing and developing apparatus to simplify the photographic printing process and improve its quality.

[0011]

In order to solve the above problems, according to the present invention, it is possible to perform a standard exposure under a constant condition, which has been conventionally performed on a control strip. A photoprinting and developing device is provided with a means for presenting the processing liquid state from the measurement and the result, and the control strip and the const holder are unnecessary.

The photographic printing and developing apparatus of the present invention will be described in detail below with reference to the drawings showing an example. Figure 1
1 is a schematic sectional view showing an example of a photographic printing and developing apparatus of the present invention. The configuration is such that the exposure unit 1, the development processing unit 2, the density measurement unit 3,
Negative film 4, photosensitive material 5, control unit 6, monitor 7,
Lamp 11, lens 12, shutter 13, cutter 1
4, densitometer 15.

In the exposure section 1, a reference film is used as the negative film 4, and the lamp 11, the lens 12, and the shutter 13 are set as reference settings, and the negative film 4 is subjected to reference exposure. The photosensitive material subjected to the reference exposure is subjected to development processing in the development processing section 2 and then to the densitometer 1 in the density measurement section 3.
The concentration is measured at 5. The numerical value obtained by the measurement is displayed on the monitor 7 as data as to whether or not the state of the treatment liquid is within the specified use range.

The reference setting will be described. Conventionally, an undeveloped light-sensitive material exposed under constant conditions (light intensity and exposure time, specific light quality) has been used as a control strip for a photographic printing and developing apparatus. The control strip is passed through the treatment liquid, and the state of the treatment liquid is confirmed by the degree of color development. The reference exposure is the exposure under the constant conditions applied to the control strip.

A shutter for realizing the reference exposure,
The lens and lamp settings are the standard settings. In Figure 2,
The explanatory view of an example of the standard negative used for the photographic printing development device of the present invention is shown. The reference negative is a specific negative used when performing reference exposure, and has a scale of white W, gray G, and black B having known densities as illustrated.

FIG. 3 is a schematic perspective view showing an example of the exposure section of the photographic printing and developing apparatus of the present invention, and FIGS. 4 and 5 are enlarged explanatory views showing an example of the exposure section of the photographic printing and developing apparatus of the present invention. is there. The configuration of the exposure unit shown in FIG. 3 includes a reference negative 8, a printing negative 9, a screen window 10, a motor 16, and a pulley 1.
7, belt 18, negative transfer roller 19, negative mask 2
4 and 5, the reference negative 8, the print negative 9, the screen window 10, and the negative mask 20 are shown in the exposure section.

As shown in FIG. 3, the printing negative 9 is
It is continuously conveyed by the negative transfer roller 19. The belt 18 fixing the mount M on which the reference negative 8 is set is moved by the motor 16 via the pulley 17 to move between the exposure position and the retracted position.

When the negative mask 20 is at the retracted position, the exposure section is as shown in FIG. As shown by the arrows and dotted lines in the figure, the printing negative 9 is transported across the rear surface of the screen window 10. The reference negative 8 is provided in the mount M, and when the reference exposure button on the operation panel is pressed, it slides from the retracted position and is set at the exposure position in the screen window 10. When the reference negative 8 is set at the exposure position, it becomes as shown in FIG.

In order to obtain the light source necessary for the standard exposure, a light source dedicated to the standard exposure is prepared separately from the normal light source for printing for photographic printing so that the light source can be automatically switched. Shared with the light source for printing for printing,
At the time of reference exposure, the light source voltage and the like may be automatically set to the reference exposure.

FIG. 6 shows an explanatory view of an example of a light source of the photographic printing and developing apparatus of the present invention. Reference numerals in the drawing are 21-lamp for reference exposure, 22-lamp for normal printing, 27-motor and 28-belt. When a light source for normal printing and a light source for reference exposure are separately prepared, for example, as shown in the figure, a belt 28 equipped with a lamp 21 for reference exposure and a lamp 22 for normal printing is driven by a motor 27, and the operation panel is operated. The light source is automatically switched according to the instructions.

When the light source for normal printing and the light source for reference exposure are shared, it is necessary to adjust the light source so as to properly satisfy the reference exposure condition. FIG. 7 shows a schematic sectional view of another example of the light source of the photographic printing and developing apparatus of the present invention. Reference numerals in the drawing are 11-lamp, 23-mechanical shutter, and 2
4-Shutter drive, 25-Light control filter, 26-
A filter driving unit, 29-control unit. For example, a control unit is provided in the light source having the configuration shown in the figure, and the light amount and color temperature of the lamp are checked by the sensor, and the lamp voltage and the dimming filter are automatically controlled so as to obtain accurate values. The dimming filter interposes a YMC color filter in the optical path in order to adjust the exposure color.

FIG. 8 is a block diagram showing an example of the control section of the photographic printing and developing apparatus of the present invention. It consists of a block that switches the light source and controls the exposure conditions based on keyboard input when performing standard exposure, and a block that calculates and displays the processing liquid state based on the concentration measurement data obtained by performing standard exposure. . A block indicated by a thin line is a control unit that sets exposure conditions based on negative determination result data and keyboard input when performing normal photo printing.

FIG. 9 is a flow chart showing an example of the control procedure of the photographic printing and developing apparatus of the present invention. When the standard exposure is selected, the light source is switched to perform adjustment and confirmation, and then the exposure time is set and the exposure is executed. The concentration of the obtained paper is measured, the processing liquid state is calculated, the result is displayed, and the procedure ends. The flow indicated by the thin line is a control procedure for normal photo printing.

FIG. 10 is an explanatory diagram of a monitor screen in an example of the photographic printing and developing apparatus of the present invention. The display of the processing liquid state on the monitor screen may be performed by indicating each numerical value of the upper and lower limits of the specified use range, the measured value at the time of checking, and the availability as shown in the figure.

[0025]

As described above, the photographic printing / developing apparatus of the present invention comprises reference exposure means for performing exposure under the same exposure conditions as those previously applied to the control strip.
It is provided with a densitometer for measuring the paper obtained by the reference exposure and a means for computing the density result and presenting and determining the processing liquid state. With the apparatus of the present invention, the processing liquid state can be confirmed and presented by a simple operation similar to a normal photographic printing and developing operation. Therefore, the control strip and the const holder are not required, and the complexity of filling the control strip and setting the const holder is eliminated. Since there is no need to procure special materials for managing the processing liquid, there is an effect that the photoprinting process can be simplified.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an example of a photographic printing and developing apparatus of the present invention.

FIG. 2 is an explanatory diagram of an example of a reference negative used in the photographic printing and developing apparatus of the present invention.

FIG. 3 is a schematic perspective view showing an example of an exposure unit of the photographic printing and developing apparatus of the present invention.

FIG. 4 is an enlarged explanatory view showing an example of an exposure unit of the photographic printing and developing apparatus of the present invention.

FIG. 5 is an enlarged explanatory view showing an example of an exposure unit of the photographic printing and developing apparatus of the present invention.

FIG. 6 is an explanatory diagram of an example of a light source of the photographic printing and developing apparatus of the present invention.

FIG. 7 is a schematic sectional view of another example of a light source of the photographic printing and developing apparatus of the present invention.

FIG. 8 is a block diagram showing an example of a control unit of the photographic printing and developing apparatus of the present invention.

FIG. 9 is a flowchart showing an example of a control procedure of the photographic printing and developing apparatus of the present invention.

FIG. 10 is an explanatory diagram of a monitor screen in an example of the photographic printing and developing apparatus of the present invention.

[Explanation of symbols]

 1 Exposure Section 2 Development Processing Section 3 Density Measuring Section 4 Negative Film 5 Photosensitive Material 6 Control Section 7 Monitor 8 Reference Negative 9 Printing Negative 10 Screen Window 11 Lamp 12 Lens 13 Shutter 14 Cutter 15 Densitometer 16 Motor 17 Pulley 18 Belt 19 Negative transfer roller 20 Negative mask 21 Lamp for reference exposure 22 Lamp for normal printing 23 Mechanical shutter 24 Shutter drive section 25 Dimming filter 26 Filter drive section 27 Motor 28 Belt 29 Control section M Mount W White G Gray B Black

Claims (4)

[Claims] 1. A photographic printing and developing apparatus for continuously printing and developing a photographic material, a standard exposure means having exposure conditions for determining a processing liquid state, and a sensitized printing and development processed by the standard exposure means. A photographic printing and developing apparatus comprising: a density measuring means for measuring the density of a material; and a judgment display means for judging / displaying the processing liquid state based on the result of the density measuring means. 2. The photographic printing according to claim 1, wherein the reference exposure means comprises a reference exposure-dedicated negative having a density scale defined by the reference exposure condition, and a reference exposure-dedicated light source defined by the reference exposure condition. Development device. 3. The reference exposure means comprises a reference exposure-dedicated negative having a density scale defined by the reference exposure condition, and a reference / normal exposure combined light source defined by the reference exposure condition. Photographic printing and developing device. 4. A photographic printing and developing apparatus according to claim 2, further comprising means for moving said negative for reference exposure to the exposure and non-exposure positions of the negative mask as required.