JP2689150B2 - Photosensitive material conveying speed control device for photographic photosensitive material processor - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a photosensitive material conveying speed control device for a photographic photosensitive material processing machine used for photographic processing of photographic photosensitive materials.

[Prior Art] Conventionally, there is no photosensitive material conveying speed control device for this type of photographic photosensitive material processing machine, and there is a processing machine as described below.

This processing machine is provided with a plurality of processing tanks each having a capacity of several liters, a heater for heating the processing liquid stored in the processing tanks, and a photographic material provided for each of the photographic light-sensitive materials. It is provided with a feed roller and a guide roller for sequentially carrying and immersing in the processing tank.

Then, the photographic photosensitive material is conveyed while being immersed in the processing solution in the processing tank, and the processing is sequentially performed.

When color development processing is performed using a color development solution as the processing solution, it is necessary that there is a certain relationship between the color development processing time and the color development processing temperature, as shown in FIG. In order to maintain this relationship, the color development processing temperature is controlled to a set processing temperature by intermittently turning on the heater, and the photographic light-sensitive material is transported at a constant transportation speed.

[Problems to be Solved by the Invention] However, in the above-described processing machine according to the conventional example, since the color development processing temperature is controlled to the set processing temperature by the intermittent heater, the color development processing temperature is set to the set processing temperature. When the temperature change is large, it becomes difficult to maintain the optimum photographic image, and the photographic performance such as image density is deteriorated.

Therefore, the present invention has been made by paying attention to the above-mentioned problems, and an object thereof is to control the conveying speed of the photographic light-sensitive material according to the temperature change of the processing liquid to secure an optimum photographic image. An object of the present invention is to provide a photosensitive material conveying speed control device for a photographic photosensitive material processing machine, which can improve performance.

[Means for Solving the Problems] A photosensitive material conveying speed control device for a photographic photosensitive material processor according to the present invention that achieves the above object detects a processing temperature of a processing liquid, and sets a value corresponding to the detected temperature detection signal. The speed data is read from the memory, a drive command is issued to the transportation motor drive unit based on the read set speed data, the rotation speed of the transportation motor is controlled, and optimal photographic performance corresponding to the processing temperature of the processing liquid is obtained. In a photosensitive material conveying speed control device for a photographic photosensitive material processing machine configured to convey photographic photosensitive material at a speed, a temperature detector that detects the processing temperature is immersed in the processing liquid in the processing tank, and the temperature detection circuit And the A / D conversion circuit are sequentially connected, the CPU is connected to the A / D conversion circuit via a data path, the ROM and the output port are connected to the A / D conversion circuit, and the temperature detection circuit It has a function of amplifying the thermoelectromotive force from the intelligence device and outputting it as a temperature detection signal to the A / D conversion circuit, and the A / D conversion circuit converts the temperature detection signal from the temperature detection circuit from an analog amount to a digital amount. The ROM is a circuit that enables digital processing, and the ROM is a memory that stores a control program necessary for controlling the speed control device, and prestores set speed data corresponding to the processing temperature of the processing liquid. A memory, in which a processing temperature and a speed table having a set speed corresponding thereto are stored, and the CPU controls the entire speed control device and
The set speed data corresponding to the digital temperature detection signal from the conversion circuit is checked and the corresponding set speed data is read from the ROM, and the control signal for controlling the pulse frequency based on the read set speed data is output through the output port to the drive circuit. It is characterized in that it has a control function of outputting to.

[Operation] When the transport speed of the photographic photosensitive material is controlled according to the processing temperature of the processing liquid, the processing temperature of the processing liquid is detected, the set speed data corresponding to the detected temperature detection signal is read from the memory, and the read setting is performed. A control signal is output based on the speed data, and the output control signal controls the number of rotations of the conveying motor, whereby the conveying speed of the photographic photosensitive material can be controlled according to the processing temperature of the processing liquid.

As a result, the processing time corresponding to the processing temperature of the processing liquid is secured, and therefore, it becomes easy to maintain the optimum photographic image and the photographic performance such as the image density is improved. Therefore, the above problem can be eliminated.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a photosensitive material conveying speed control device of a photographic photosensitive material processing machine according to an embodiment of the present invention.

This processor has a processing tank 1 for storing a color developing solution. A guide roller 4 is provided in a photosensitive material conveying path 3 for immersing and conveying the photographic photosensitive material 2 in the color developing solution in the processing tank 1.
A pair of feed rollers 5 that are in contact with each other are arranged. Further, the processor is a color developing solution temperature control device 6 for controlling the processing temperature of the color developing solution to a set temperature, and a photographic light-sensitive material at a set speed corresponding to the processing temperature changed by the temperature control device 6 with the set temperature as a boundary. And a photosensitive material conveyance speed control device 7 for controlling the conveyance speed.

The temperature control device 6 is a thermistor 8 as a temperature detector that detects the processing temperature by being immersed in the color developing solution in the processing tank 1.
And a comparator 9. The thermistor 8 has a function of changing its resistance value as the processing temperature changes. The comparator 9 is a comparator circuit having “+” and “−” input terminals, and has a “+” at the connection point between the resistor R ₁ and the thermistor 8 connected in series between the power source V ₀ and ground.
The input terminal is connected so that the divided potential corresponding to the processing temperature can be input as a temperature detection signal.

Further, the comparator 9 "-" input terminal of one of the power supply V ₀ and resistor R ₂ connected in series between the ground, the variable resistor R ₃ and resistor R _4, is connected to the variable resistor R _3, set The divided potential corresponding to the temperature can be input as the reference voltage. Then, the comparator 9 compares the temperature detection signal with the reference voltage, outputs a high level signal when the temperature detection signal is larger than the reference voltage, and outputs a low level signal when the temperature detection signal is smaller than the reference voltage. Drive circuit
It has a function to output to 10. The drive circuit 10 is a circuit for driving the relay 11. The drive circuit 10 sets the relay coil excitation voltage to zero by inputting a high level signal from the comparator 9, and outputs the relay coil excitation voltage to the relay 11 by inputting a low level signal. Have a function. The relay 11 has a relay coil that turns on the open / close switch 12 by applying a relay coil exciting voltage, and is urged by an elastic member to turn off the open / close switch 12 when the relay coil exciting voltage is zero. A heater 13 is provided at the bottom of the processing tank 1, and an open / close switch 12 and an AC power source 14 are connected to the heater 13 to form a loop.

The speed connecting device 7 is provided with a pulse motor 17 for providing rotational drive via one of a pair of feed rollers 5 facing each other through a gear 15 and a toothed belt 16 meshed with and meshed with the gear 15. A drive circuit 18 is connected to the pulse motor 17, and an output port 19 is connected to the drive circuit 18. Further, a temperature detector 20 such as a thermocouple for detecting the processing temperature is immersed in the color developing solution in the processing tank 1, and a temperature detection circuit 21 and an A / D conversion circuit 22 are sequentially connected thereto. A CPU 24 is connected to the A / D conversion circuit 22 via a data path 23, and a ROM 25 and the output port 19 are connected thereto.

Specifically, the temperature detection circuit 21 has a function of amplifying the thermoelectromotive force from the temperature detector 20 and outputting it to the A / D conversion circuit 22 as a temperature detection signal. The A / D conversion circuit 22 is the temperature detection circuit 21.
It is a circuit that converts the temperature detection signal from the analog amount into a digital amount and enables digital processing. Also, ROM25
Is a memory for storing a control program necessary for controlling the speed control device 7. Further, this ROM 25 is a memory that stores in advance set speed data corresponding to the processing temperature of the color developing solution, and stores therein a processing temperature and a speed table having the set speed corresponding thereto. . The CPU 24 controls the entire speed control device and also A / D
Check the digital speed detection signal from the conversion circuit 22 and read the corresponding set speed data from the ROM 25,
It has a control function of outputting a control signal for controlling the frequency of the pulse based on the read set speed data to the drive circuit 18 via the output port 19. The drive circuit 18 is a circuit that drives the pulse motor 17 based on a control signal from the CPU 24, and is connected between the common terminal 27 of the exciting coil 26 of the pulse motor 17 and the power supply and is turned on by a start signal. Transistor and each terminal 28 of exciting coil 26
Excitation coil of the pulse motor 17 is provided with a switching transistor that is connected between the control signal from the CPU 24 and is connected between
Can be applied to 26. The pulse motor 17 is a motor driven by a two-phase excitation method in which two phases are always in the ON state at the same time, and the ON state is sequentially rotated, and the number of revolutions is regulated by the frequency of the pulse.
It has the function of increasing the number of revolutions as the frequency increases.

Next, a speed control method of the speed control device 7 having the above configuration will be described.

FIG. 2 is a time chart showing the speed control method of the speed control device, and FIG. 3 is a graph showing an example of the relationship between the color development processing time and the color development processing temperature, which generally has such a correlation.

When controlling the conveying speed of the photographic light-sensitive material 2 in the color development processing, first, based on a graph showing the relationship between the color development processing time and the color development processing temperature when optimum photographic performance is exhibited, the color developing solution is The processing temperature and the transport speed of the photographic light-sensitive material 2 corresponding thereto are set. Preferably, the set processing temperature and the set speed, that is, the set processing time are values on the curve 30 passing through the center of the allowable area 29 shown by hatching in the graph. The value of the set speed is set for each processing temperature of 1 °, preferably 0.1 °. Then, a speed table including data of the set processing temperature and the set speed is stored in the ROM 25 via the input device.

When the processing temperature is controlled to the set processing temperature by the temperature control device 6, the color developing solution functionally of the temperature control device 6 cyclically changes in temperature with the set processing temperature as a boundary. Even if the temperature change of the color developing solution is small, the speed control device 7 controls the conveying speed of the photographic light-sensitive material 2 accordingly.

More specifically, the temperature control device 6 controls the processing temperature of the color developing solution to a set processing temperature. The actual processing temperature is a value during temperature increase with the set processing temperature as a boundary, a fixed value of the set temperature, or Although it is indicated by the value while the temperature is decreasing, when the actual processing temperature is detected by the temperature detector 20, the temperature detection circuit 21 amplifies the temperature detection signal of the minute potential from the temperature detector 20 and the A / D conversion circuit. Output to 22. The A / D conversion circuit 22 converts the amplified temperature detection signal into a digital amount and sends it to the CPU 24. The CPU 24 matches the digital temperature detection signal sent from the A / D conversion circuit 22, reads the corresponding set speed data from the ROM 25, and controls the pulse frequency based on the read set speed data. The signal is output to the drive circuit 18 via the output port 19. Drive circuit
At 18, the switching transistor on the power supply side is turned on, and the switching transistor on the ground side is turned on and off by the control signal from the CPU 24.

As a result, as shown in FIG. 2, when the processing temperature is rising, the pulse frequency is increased, that is, the pulse width T is decreased, so that the rotation speed of the pulse motor 17 is increased and the photographic photosensitive material 2 is conveyed. Be accelerated. When the processing temperature is the set processing temperature, the pulse motor 17 rotates at a constant rotation speed by the frequency corresponding to the processing temperature, that is, the pulse width T ₅ , and the photographic photosensitive material 2 is conveyed at the set speed. When the processing temperature is decreasing, the pulse frequency decreases, that is, the pulse width T increases, so that the rotation speed of the pulse motor 17 decreases, and the conveyance of the photographic photosensitive material 2 is decelerated.

As a result, the optimum conveying speed of the photographic light-sensitive material corresponding to the actual processing temperature, that is, the set processing time shown by the curve 30 in FIG. 3, is obtained, the photographic image is improved, and the optimum photographic performance is obtained.

The present invention is not limited to the above embodiment. For example, the photographic light-sensitive material may be intermittently conveyed frame by frame, and the stop time may be controlled as the processing time. In the case of short-time processing, since the processing temperature only changes downward, the temperature control device can be omitted. Further, the signal of the temperature detector 20 can be used for both the heater output control and the conveyance speed control.

Hereinafter, the photographic light-sensitive material to which the present invention can be preferably applied will be described, but the present invention is not limited thereto.

The silver halide grains used in the silver halide emulsion layer of the photographic light-sensitive material processed according to the present invention include, for example, silver chloride, silver chlorobromide, silver chloroiodobromide, and silver iodobromide.
In the present invention, silver chloride is used in an amount of at least 80 mol%, particularly 90 mol%.
It is preferably substantially silver chloride containing mol%, and it is preferable that bromide and iodide are extremely small.

In particular, when the content of silver chloride is 95 mol% or more, the effects of the present invention are favorably exhibited, and the silver halide is preferably used in view of rapidity. Particularly preferably, silver chloride is at least 98 mol%. In a special case, it is also preferable that the blue photosensitive layer is silver halide containing 30 mol% of bromide and the other two layers, for example, the green photosensitive layer and the red photosensitive layer are about 99 mol% of chloride. Is one. Silver halide is preferably a core-shell grain and has a double layer structure.

The silver chloride preferably used in the present invention is at least
A silver halide emulsion layer containing silver halide grains consisting of 80 mol%, especially 90 mol%, contains a color coupler. These color couplers react with oxidation products of the color developing agent to form non-diffusible dyes. The color coupler is advantageously incorporated in or in close proximity to the photosensitive layer in non-diffusible form.

Thus, the red-sensitive layer can contain, for example, a non-diffusible color coupler which produces a cyan partial color image, generally a phenol or α-naphthol coupler. The green light-sensitive layer comprises, for example, at least one non-diffusing color coupler, usually 5 magenta, which produces a magenta partial color image.
-It can include pyrazolone-based color couplers and pyrazolotriazole-based couplers. The blue-sensitive layer can include, for example, at least one non-diffusible color coupler that produces a yellow partial color image, generally a color coupler having a closed ketomethylene group. The color coupler can be, for example, a 6-, 4- or 2-equivalent coupler.

In the present invention, a 2-equivalent coupler is particularly preferred.

Suitable couplers are disclosed, for example, in the following publication: Agfa's research report (Mitteilunglnausden Forsc.
hungslaboratorien der Agfa), Leverkusen /
Munich (Leverkusen / Munchen), Vol.III.p.111 (1
961) W.Pelz's "Farbkuppler"; K. Venkataraman, "The Chemirsry of Synthetic D"
yes), Vol. 4, 341-387, Academic Press (Acad
emic Press), "The Theory of the Photograph Process"
ic Process), 4th edition, pages 353-362; and Research Disclosure No. 17643, section VII.

In the present invention, in particular, magenta couplers represented by the general formula [M-1] as described on page 26 of JP-A-63-106655 (specific examples of these magenta couplers are described in JP-A-63-106655). No. 1 to No. 77 described in JP-A-106655, pages 29 to 34) and cyan represented by the general formula [CI] or [C-II] also described on page 34. Couplers (Specific examples of cyan couplers include (C'-1) to (C'-8) described in the same specification, pages 37 to 42).
2), (C "-1) to (C" -36)), and high-speed yellow couplers also described on page 20 (specific examples of cyan couplers described on pages 21 to 26 in the same specification). (Y'-1) to (Y'-39)) are preferably used in combination with the photographic light-sensitive material processed by the present invention from the viewpoint of the effects of the present invention.

In the present invention, when the high silver chloride photographic light-sensitive material preferably used in the present invention is used in combination with a nitrogen-containing recurring mercapto compound, not only the effects of the object of the present invention are favorably exhibited, but also a color developer. Since the effect on the photographic performance that occurs when the bleaching solution is mixed therein has another effect of making it extremely slight, it can be mentioned as a more preferable embodiment in the present invention.

Specific examples of these nitrogen-containing nitrogen-containing mercapto compounds include (I ') described in JP-A-63-106655, pages 42 to 45.
-1) to (I'-87).

The silver chloride content preferably used in the present invention is 80 mol%,
In particular, silver halide emulsions of 90 mol% or more can be prepared by a conventional method (for example, single or double inflow by constant or accelerated feeding of the material). Particularly preferred is the method of adjustment by pour-in with adjustment of the pAg; see Research Disclosure No. 17643, sections I and II.

Silver halide emulsions can be chemically sensitized.
Sulfur-containing compounds such as allyl isothiocyanate, allyl thiourea or thiosulfate are particularly preferred.
Reducing agents can also be used as chemical sensitizers, such as tin compounds as described in Belgian Patents 493,464 and 568,687, and polyamines or aminomethylsulfinic acid derivatives such as, for example, diethylenetriamine according to Belgian Patent 547,323. is there. Noble metals and noble metal compounds such as gold, platinum, palladium, iridium, ruthenium or rhodium are also suitable sensitizers. This chemical sensitization method is based on Zeitschrift Fair Bissenshaftriche Photography (Z.Wiss.Photo.) 4
6 , R. Kosio from 65 to 72 (1951)
vsky); see also Research Disclosure No. 17643, supra, section III.

Silver halide emulsions can be prepared by optically known methods, for example, neuthocyanin, basic or acidic carbocyanine,
It can be sensitized using common polymethine dyes such as rhodocyanine and hemicyanine, styryl dyes, oxonol and the like: FM Hammer (FM
Hamer) 's The Cyanine Dyes and related Com
pounds) (1964) Ullmanns Enzyk
lpadie der technischen Chemie) 4th edition, volume 18, page 431 and following, and the above research disclosure No. 1
See 7643, section IV.

Conventional antifoggants and stabilizers can be used in the silver halide emulsion. Azaindene is a particularly suitable stabilizer, with tetra- and pentazaindene being preferred, especially those substituted with hydroxyl or amino groups. Compounds of this type are, for example, Bir
r), Zeitzschrift fair Bissenshaftriche Photography (Z.Wiss.Photo) 47, 19
52, pp. 2-58, and Research Disclosure N above
o.17643, section IV.

The components of the photographic light-sensitive material can be contained by a usual known method; for example, US Pat. Nos. 2,322,027 and 2,5
33,514, 3,689,271, 3,764,336 and 3,765,
See 897. Components of photographic materials, such as couplers and U
V absorbers can also be included in the form of a charged latex; see DE 2,541,274 and EP 14,921. The components can also be fixed in the photographic light-sensitive material as polymers; for example, DE-A-2,044,992, US Pat. Nos. 3,370,952 and 4,080,
See No. 211.

Usual supports can be used as supports for the photographic light-sensitive materials processed according to the present invention, for example, supports of cellulose esters such as cellulose acetate and supports of polyester. When a paper support is used in the present invention, it can be coated, for example with a polyolefin, especially polyethylene or polypropylene;
Regarding this, Research Disclosure No.176 above
See 43, section VVI.

Conventional hydrophilic film formers can be used as protective colloids or binders for the layers of the photographic material, such as proteins, especially gelatin, alginic acid or derivatives such as esters, amides or salts thereof, carboxymethylcellulose and cellulose. A cellulose derivative such as sulfate, starch or a derivative thereof, or a hydrophilic synthetic binder;
See also the binders set forth in Disclosure 17643, Section IX.

The layer of the photographic material provided on the support can be cured by a conventional method, for example, using an epoxide, a heterocyclic ethyleneimine or an acryloyl hardener. Furthermore,
The photographic constituent layers can be cured by the method according to DE-A 2,218,009 to produce a color photographic light-sensitive material suitable for high temperature operation. The above layer can be cured with a diazine, triazine or 1,2-dihydroquinoline-based curing agent or a vinylsulfone-type curing agent. Other suitable curing agents are German Patent Application Publication No. 2,439,551,
No. 2,225,230 and No. 2,317,672, and Research Disclosure No. 17643, Section XI, above.

According to the present invention, the processing temperature of the processing liquid is detected, the set speed data corresponding to the actual processing temperature is read from the memory based on the detected temperature detection signal, and the set speed data is conveyed based on the read set speed data. The photographic photosensitive material is conveyed at a conveying speed that gives a drive command to the motor driving means to control the number of rotations of the conveying motor and obtains optimum photographic performance corresponding to the processing temperature of the processing liquid. It is possible to control the conveying speed of the photographic light-sensitive material according to the temperature change. Therefore, it is easy to maintain the optimum photographic image, and the optimum photographic performance corresponding to the processing temperature of the processing liquid can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a photosensitive material conveying speed control device of a photographic photosensitive material processing machine according to an embodiment of the present invention, FIG. 2 is a time chart showing the operation of the speed control device, and FIG. 3 is a color development processing time. 3 is a graph showing the relationship between the color development processing temperature and the color development processing temperature. 1: Processing tank 2: Photosensitive material 3: Photosensitive material transport path 5: Feed roller 6: Color developer temperature controller 7: Photosensitive material transport speed controller 8: Thermistor 9: Comparator 10: Drive circuit 11: Relay 13: Heater 17: Pulse motor 18: Drive circuit 20: Temperature detector 21: Temperature detection circuit 22: A / D conversion circuit 24: CPU 25: ROM

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-61-257849 (JP, A) JP-A-60-115937 (JP, A) Practical application Sho-58-138940 (JP, U)

Claims (1)

(57) [Claims] 1. A processing temperature of a processing liquid is detected, set speed data corresponding to the detected temperature detection signal is read out from a memory, and a drive command is issued to a carrying motor driving means based on the read set speed data for carrying. In the photosensitive material transfer speed control device of the photographic photosensitive material processing machine configured to transfer the photographic photosensitive material at a transfer speed that achieves optimum photographic performance corresponding to the processing temperature of the processing liquid by controlling the motor rotation speed, A temperature detector that detects the processing temperature is immersed in the processing liquid of, and the temperature detection circuit and the A / D conversion circuit are sequentially connected to this, and the CPU is connected to this A / D conversion circuit via the data bus. , A ROM and an output port are connected to it, and the temperature detection circuit has a function of amplifying thermoelectromotive force from the temperature detector and outputting it to the A / D conversion circuit as a temperature detection signal, A / D conversion times Is a circuit that converts the temperature detection signal from the temperature detection circuit from an analog amount to a digital amount and enables digital processing, and the ROM is a memory that stores a control program necessary for controlling the speed control device, and A memory for storing preset speed data corresponding to the processing temperature of the liquid in advance, in which a speed table having the processing temperature and the set speed corresponding thereto is stored, and the CPU is a speed control device. A control signal that controls the entire system, reads the set speed data corresponding to this from the digital temperature detection signal from the A / D conversion circuit, and reads the corresponding set speed data from the ROM, and controls the pulse frequency based on the read set speed data. Material conveyance of a photographic light-sensitive material processing machine, characterized in that it has a control function of outputting Speed control device.