JPS6014239A - Control strip - Google Patents

Abstract

PURPOSE:To enhance reliability of selfcontrol and adjustment of a photosensitive material processing soln. and to adapt its operation to reduction of labor cost and automation in a simple and inexpensive manner by attaching a magnetic recorder to a control strip. CONSTITUTION:A magnetic recording tape is attached separately or applied or bonded to a control strip used for controlling the performance of a processing soln. of a photosensitive material as the counterpart of said strip. The image density information of a control dot image or optical wedge image formed on the control strip by the automatic development is read out and compared with the information of a reference strip, and the conditions of the processing soln. are examines and control measures are taken. The magnetic recording tape attached to said control strip is preferably attached to the control strip or bonded in one body so as to provide for examination of the conditions of the processing soln. before now, and description of a control chart, and to facilitate arrangement and storage.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a control strip used for controlling and adjusting a processing solution for silver halogenide photosensitive materials.

(Prior art) Performance checks of various processing solutions for silver halide photosensitive phase materials (hereinafter referred to as bad phase materials), especially the performance of large amounts of processing solutions in running processing baths at photofinishing laboratories, etc. Inadequacies in control, management, and emergency maintenance pose a risk of causing a large amount of processing fluid to be disposed of and halting the process, damaging the technical credibility of the current IM plant and the commercial profits of the current IM plant. The color development of color sensitive materials, that is, color negative film and color positive photographic paper, is due to their complex multilayer structure, the difficulty in reproducing color tones due to the wide variety of materials used, and the human eye's precise color discrimination. Strict control and adjustment is necessary to withstand stress and stably reproduce good color tone, and as a practical means of controlling and adjusting the color development solution using a control strip.

The control strip used for controlling the processing solution for the black and white phase or color-sensitive phase is used to apply sunlight of a specified intensity or exposure f of three color separation to the same type of phase as the object to be processed, and to obtain a control point latent one image or This is a form in which a light wedge phenomenon is generated.

And the above [7 ta sub I#? - The undeveloped control strip provided and the so-called reference strip in which the control strip has been subjected to specified phenomenon processing to expose latent gaps are prepared by the manufacturer, and the person in charge of management is responsible for management and adjustment. Remove the control strip with the desired treatment solution.
97110 images (#I density was measured with a densitometer,
By comparing and contrasting, the condition of the processing liquid is understood and adjusted and managed.

The results obtained in this way are entered into a control chart, managed in chronological order according to QC techniques, and adjustments are made.

However, the above-mentioned management and adjustment system requires a lot of time and skill, and also has its own judgment bias or judgment error, and it is difficult to maintain a unified technical level that embodies the poor image quality that photosensitive material manufacturers have painstakingly created. It is difficult to guarantee quality.

In order to avoid the above-mentioned inconvenience, the measurement results of the control strips mentioned in 1 to 1 above should be sent to the CPH of the central processing center.
There are some large-scale control systems in place that send input to a processing bath, make a determination at the CPH, select a treatment, and return an instruction for treatment to the processing bath of the transmission source.

However, this control system requires a huge amount of system construction cost, requires a considerable amount of money to run the system, and is at risk of stopping the entire area due to CPU failure, failure of the transmitter/reply device, or CPU malfunction. Contains.

18 Due to the rapid development of electronic equipment and control equipment, with the advent of simple and inexpensive equipment, there is a general tendency to shift from a centralized management system to a distributed management system, improving the reliability of private management at the end. The possibilities and convenience of self-management are being reconsidered.

(Objective of the Invention) Based on the above-mentioned problems and trends, the object of the present invention is to provide a control strip that improves the reliability of in-house management and adjustment of a photosensitive material processing solution, and is simple, inexpensive, labor-saving, and suitable for automation. be.

(Structure of the Invention) The present invention provides a magnetic recording medium that is easy to read and retrieve information, has stable information recording, and is inexpensive, for use in control strips used for sensing the performance of processing solutions for photosensitive materials. The control point 1, which has appeared on the control strip through self-development processing, is attached to the attached magnetic recording medium either as a separate unit or as an integral part of the strip by means such as painting or pasting. The image density information of the image or light wedge image is read in, and the performance status of the processing liquid and adjustment measures are selected and implemented after comparing it with the information provided by the reference strip.

In the present invention, the magnetic recording body attached to the IJ tube is convenient for organizing and storing in preparation for retrospective investigation of the processing liquid condition and drawing of control charts.
It is preferable that the coating and adhesion be applied directly to the IJ as an integral part.

If the magnetic recording medium is to be separated, the magnetic recording medium may be provided on a suitable support (for example, a resin plate, etc.) that is conveniently shaped for storage.

The photosensitive material used in the control strip of the present invention is of the same type as the black-and-white or color photosensitive material to be processed by the processing solution to be controlled.

Although any magnetic recording body can be used in the present invention, the magnetic material constituting it is γ.
- Various types of iron oxide, chromium dioxide, cobalt iron oxide, etc. can be used, and a fine powder of needle-like crystals exhibiting shape anisotropy or surface anisotropy is particularly preferred.

The magnetic recording medium may also contain a binder, and conventionally known thermoplastic resins, thermosetting resins, reactive resins, electron beam curable resins, and mixtures thereof are used as the binder.

As a thermoplastic resin, the softening temperature is 150℃ or less, the average molecular weight is 10.000 to 200.000, and the degree of polymerization is about 20.
Examples thereof include vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinylidene chloride copolymer, and the like.

The thermosetting resin or reactive resin has a molecular weight of 200,000 or less in the state of a coating liquid, and after coating and drying, the molecular weight becomes infinite due to reactions such as condensation and addition. Moreover, among these resins, those which do not soften or melt before the resin is thermally decomposed are preferable. Specific examples include phenol resin, epoxy resin, polyurethane hardening type side resin, 6-purple resin, melamine resin, alkyd resin, silicone resin, and the like.

Examples of unsaturated prepolymers used in electron beam irradiation-curable resins include maleic anhydride types and urethane acrylic types, and examples of polyfunctional monomers include ether acrylic types, urethane acrylic types, and epoxy acrylic types.

The magnetic recording material according to the present invention can be produced, for example, by electrolyzing the binder in an organic medium to disperse the magnetic material, adding additives such as a dispersant, a lubricant, or an antistatic agent as necessary, and placing it on a non-magnetic support. Formed by coating.

As described above, the magnetic recording body related to the present invention may be separate from or integrated with the control strip of the present invention, but when integrated, a rectangular or strip-shaped magnetic recording body may be formed at a position of the control strip that does not overlap with the control point image or the optical wedge image. Alternatively, it can be provided in a convenient shape such as a disk shape.

Further, when integrated, it may be provided after the development process or may be provided in advance before the development process.

However, if the binder is provided before development, a binder that is resistant to alkali and acid and is insoluble in the processing solution is selected, and additives such as the dispersant added as necessary are added to the processing solution. If the material is indestructible or soluble, one is selected that is substantially harmless to the processing solution.

The control strip prepared as described above is immersed in a processing solution to be controlled together with the same type of sensitive material during a processing run, or independently as required, and subjected to a phenomenon treatment.
One control point or one light wedge on the control strip is revealed. This result is input to a magnetic recording medium and compared with information recorded on a reference strip. Any form of input can be used, such as magnetization intensity, magnetization pattern, or magnetization position.

The phenomena implied by the collated results are matched with treatments for the phenomena that are supported by reliable experiments,
Instructions based on the treatment lead to measures such as replenishment of various chemical solutions to restore the activity or physical properties of the treatment liquid, or disposal of the treatment liquid.

FIG. 1 shows a block chart of treatment liquid management and adjustment using the control strip of the present invention.

The results output by the judgment command device can also be used to create control charts or display them on a CRT. Further, commands from the device can be input into an automatic processing liquid adjustment drive device for automation, or can be performed manually.

Reference strips are also always used in conjunction with control strips (control strips).
As with the IJ tube, it is convenient to record information on a magnetic recording medium in a similar form, and it is not necessarily necessary to physically attach the control strip to the same type of sensitive material as the control strip, but to record the necessary information. A magnetic recording medium alone may be sufficient.

FIG. 2 shows an example of a flowchart for controlling and adjusting a treatment liquid using the control strip of the present invention. This flowchart is an example when management items 11 (■) and (2) are set.

The comparison results of the control and reference strips are the paths I→■, →■7, 9 - ■→IL→m, , I→■2→■3 or I→■1→■2
For paths other than the path ■→■, →n■1 which follow any of the following paths and indicate that it is completely normal, the presence or absence of a treatment supported by the reliable experiment mentioned above is asked, and if there is, the treatment is confirmed. is applied to the processing solution, the processing solution is substantially restored to normal,
The development processing of the photosensitive material is continued in the same way as in the case of path ■→■ and →UI. If no such action is taken, the processing solution is discarded and replaced with a new solution.

(Example) Next, the present invention will be specifically described with reference to Examples, but the embodiments of the present invention are not limited thereto.

Example-1 Figure 3 shows a plan view ((a) in the same figure) and an enlarged partial cross-sectional view ((b) in the same figure) of a control strip related to color photographic paper.
))showed that. In this example, the magnetic recording material was uniformly provided over the entire surface of the polyethylene waterproof layer on the side opposite to the photosensitive layer of the photosensitive material.

In FIG. 3, reference numeral 1 designates the control strip of the present invention, which is made of color photographic paper cut to a predetermined size and carrying # images of control points and light strips.

10- Two predetermined areas AKw color light, green light, and red light are overlapped and exposed in the same direction in a row of light amounts, and the light m m 1M pattern has a depth due to three color light, and in the figure, z − + y
The exposure amount is increased in the direction of
The latent image density induced throughout the image is high. 21 is an exposed portion for indicating the low exposure end of overlapping exposure.

In addition to the optical wedge latent image pattern 2 provided in area A described above by multiple post-exposure to three-color light, control points were provided in multiple areas other than area A by separately controlling predetermined exposure amounts of strong and weak light using three-color light. Since it would be more useful if one quadrant shadow formation area was provided, a group 3 of submarine formation areas was provided.

3W is a non-exposed area, and a latent image forming an indication frame is provided for indicating the area. 3y and 3y1 are control point latent image areas provided by strong and weak exposure to blue light, 3m and 3ml U green light, and 3C and 301 are control point latent image areas corresponding to red light. 3b is a control point latent image area formed by multiple post-exposure to three-color light.

The control strip described above has a gray light curve in the portion corresponding to the latent image pattern 2, and each control point m (image forming area 37%, 37'%..., 3cI, etc.) has the respective shades of light and shade for the tricolor light. Complementary color filter, 3W frame part and 3
1) K can be easily created by providing a colorless filter, and by sequentially exposing light-year transparent figures to color photographic paper with three-color light of a predetermined intensity by contacting or projecting them.

A reference strip to be compared with this control strip can be easily created by subjecting the control strip to a phenomenon under predetermined conditions.

In FIG. 3(b), 4 is a color photosensitive layer, 5 is a polyethylene waterproof layer, 6 is a paper quality of 1, and 7 is a magnetic layer made of a magnetic recording material related to the present invention.

The magnetic recording material paint used for the magnetic layer 7 had the following composition.

('Mi gas recording material composition) Cobalt iron oxide powder 90 parts Vinylidene chloride-acrylonitrile copolymer 16 parts Polyurethane 7 parts Carbon black 3 parts Lecithin 5 parts Methyl isobutyl ketone 75 parts Methyl ethyl ketone 175 parts The above composition was placed in a ball mill, The mixture was thoroughly mixed and dispersed, 5 parts of incyanate was added, and the mixture was applied to the back side of waterproofed color photographic paper to a dry thickness of 6 μm to create a control strip of the present invention and a reference strip of the present invention. .

Example 2 An IJ tube (Controls) was prepared by applying the magnetic recording material paint used in Example 1 to the opposite side of the photosensitive layer of color photographic paper for waterproofing. The cross section of the strip is
As shown in the figure. The symbol has the same meaning as in Figure 3.

Example-3 The magnetic recording material paint used in Example-1 was applied to a thickness of 14 cL.
A control strip was prepared by applying the mixture to a polyester base (m), drying it, cutting it into a tape shape, and attaching it with an adhesive to the side surface of the photosensitive 13-91 layer of a negative color film. The wT plane of the control strip is shown in FIG.

(Effects of the Invention) The object of the present invention is achieved, image quality bias between photo labs is eliminated, and image quality can be improved.

[Brief explanation of drawings]

FIG. 1 is a block chart of treatment liquid management and adjustment using the control strip of the present invention, and a flowchart of the second treatment liquid management and adjustment. FIG. 3(a) is a plan view of the IJ tube (controls for color photographic paper of the present invention), and FIG. 3(b) is a sectional view. 4 and 5 are cross-sectional views of an alternative embodiment of the control strip to that shown in FIG. 1...Control strip, 2...Koshin 1 elephant,
3... Control point image, 4... Photosensitive layer, 5... Waterproofing layer, 7... Magnetic recording body. Agent Yoshimi Kuwahara 14- 29-

Claims (2)

[Claims] (1) A control strip used for performance management of a processing solution for a silver halide photosensitive phase material, characterized in that a magnetic recording member is attached thereto. (2) The control strip according to claim 1, wherein the magnetic recording body is provided directly on the control strip as a magnetic recording layer.