JPH0332776B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Field of Industrial Application The present invention is constructed so that processing such as development can be carried out in a short time by bringing a processing agent into contact with a photoreceptor such as a roll of film or photographic paper. The present invention relates to a photoreceptor processing apparatus, such as an automatic developing apparatus.

2. Prior Art Conventional photosensitive materials require a series of processing steps such as development, fixing, washing, and drying.
The processing equipment is large-scale and requires a considerable amount of processing time. For this reason, so-called instant-type photosensitive materials and processing agents have been developed in which development processing is performed using processing agents that do not require steps such as washing and drying.

As is well known, processing agents for photosensitive materials generally have extremely strong reducing power, so care must be taken when handling them.
The developer mentioned above is also sealed in a bag, which is opened for the first time for development, and the developer is squeezed to evenly contact the surface of the photosensitive material to perform the development process. There is. but,
This development process is particularly difficult to carry out on long photosensitive materials.

3. OBJECTS OF THE INVENTION The present invention specifically aims to provide a photoreceptor processing apparatus that can process long photosensitive materials, such as automatic development, to produce even and uniform images.

4 Structure of the Invention The present invention provides a processing agent-coated body (for example, a tape) coated with a processing agent such as a developer to treat a photoreceptor.
The processing agent-coated surface of the film is brought into contact with an exposed photoreceptor (e.g., a long film) and wound up one on top of the other, and after a certain period of time, the processing agent-coated body and the photoreceptor are rewound to their original state. In a photoreceptor processing apparatus configured to obtain a photoreceptor (e.g., a developed photoreceptor film) treated with the processing agent, a driving means (e.g., The control means controls the start, stop, and reversal of the driving direction of the drive by the motor), and the control means drives the drive means in order to wind up the processing agent coated body and the photoreceptor in an overlapping manner. a winding end detection circuit that outputs a signal for stopping the drive of the drive means at the end of the winding and reversing the driving direction of the drive means; a timer for receiving a signal from a circuit to issue a rewinding start signal and driving the driving means in a direction opposite to that at the time of winding; and a rewinding device for instructing the driving means to stop driving when the rewinding is completed. The present invention relates to a photoconductor processing device characterized by comprising a termination detection circuit.

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

FIG. 1 is a cross-sectional view of the processing device according to the present example with the lid opened, FIG. 2 is a cross-sectional view of the same device with the lid closed, and FIG. 3 is a perspective view showing the schematic structure of the drive system of the same device. It is. In the figure, 11 is a main body, and 12 is a lid, both of which are made of a material that does not transmit light. A lid 12 that opens and closes with respect to the main body 11 is opened and closed using a hinge 13 as a rotation axis, and is held in a closed state by an opening/closing fitting 14. The joint between the main body 11 and the lid 12 is formed by fitting combinations of projections and depressions or grooves, and when the lid is closed, the interior becomes a dark box, and the development process is performed inside the dark box.

To carry out the development process, it is first necessary to load the photoreceptor, a processing agent application tape, and a processing agent with the lid open as shown in FIG.

The photoreceptor consists of a rolled film that has been photographed, and is built into the cartridge P, with the leading end of the film F being exposed. The photoreceptor may be a roll of photographic paper. Patrone P
is attached so as to engage with a shaft 21 provided on the main body 11.

The jelly-like processing agent D is sealed in a flexible bag 101 that has an incision that ruptures when pressed. Further, the processing agent application tape W is also a paper-like body slightly longer than the roll film F, and is wound around the shaft 31, and both the processing agent D and the processing agent application tape W are housed in the housing 32 as a unit.
The housing 32 has an opening/closing lid 33 that slides to open and close from side to side.
is provided. When the housing 32 containing the treatment agent D and the treatment agent application tape W and closed by sliding the opening/closing lid 33 is attached to the main body 11, the shaft 31 engages with the tape rewinding shaft 41 provided on the main body 11. match.

Here, the tip of the processing agent application tape W and the tip of the roll film F are pulled out and attached to the winding shaft 511 provided on the main body 11. In this embodiment, the winding shaft 51
A hook 512 is attached to the circumference of the winding shaft 511 so that the tip of the processing agent application tape W and the tip of the roll film F are overlapped and hooked together. , or an autoload method.

FIG. 3 shows the main parts of the drive system for the winding shaft 51 provided on the main body 11, the shaft 21, and the tape rewinding shaft 41. In the figure, a single motor M can perform the winding operation of the winding shaft 51 and the rewinding operation of driving the shaft 21 and the unwinding shaft 41. This motor M may be housed in the shaft 511 as shown by the imaginary line, or may be provided externally. In order to transmit the rotational force of the motor M to the shaft 31 and the cartridge, a timing belt 45 is used in the drawings, but the rotational force can also be transmitted using various known conversion devices.

52 is a joint that transmits rotational force during winding to the winding shaft 51. Further, 22 and 42 are joints that transmit the rotational force during rewinding to the shaft 21 and the rewinding shaft 41, respectively.

Reference numerals 23 and 43 indicate one-way clutches in which the shaft 21 and unwinding shaft 41 freely rotate in the direction of the arrow, and reference numeral 53 indicates a one-way clutch in which the winding shaft 51 freely rotates in the direction opposite to the arrow direction.

Inside the lid 12, there are levers 61, 63 whose rotation axes are shafts 611, 621 provided on the respective lids 12.
, the lever 62 is linked to the lever 62 by shafts 612 and 622, and is pulled to the left by a spring 631 whose one end is locked to the lever 63. Furthermore, a roller 632 is provided at one end of the lever 63, which comes into contact with a lever 71 provided on the main body when the lid is closed.

At one end of the lever 61, there is a roller 613 that connects with a joint 72 provided on the main body 11 when the lid is opened.
A roller 623 for pressing the processing agent D is attached to one end of the lever 62. This lever 6
2 and 63 may be provided on the lid 12 or on the side surface of the casing 32, the processing agent D can be pressed by the opening/closing operation of the lid 12.

A lever 641 is attached to the inside of the lid 12,
Its tip is a roller 64. roller 64
contacts a roller 74 provided on the main body 11 when the lid is closed, and a roll film F and a processing agent application tape W are placed between the rollers 64 and 74 to sandwich them.

Two levers 71 and 73 provided on the main body side can rotate around a coaxial shaft 711. The lever 73 is biased counterclockwise by a spring 732, and the lever 71 and the lever 73 are biased by a spring 712 in a direction in which they overlap with each other. A protrusion 731 is attached to one end of the lever 73, and when the casing 32 is loaded with the lid open, the protrusion 731 engages with the opening/closing lid 33 of the casing 32.

With the lid open as shown in FIG.
When the lid is closed after installation, the state changes to the state shown in Fig. 2. That is, the roller 613 provided on the lid 12 joins with the joint 72 provided on the main body 11 and rolls, and the lever 61 rotates clockwise. lever 61 and shaft 6
The lever 63 linked at 12 moves to the right,
The roller 632 contacts the lever 71 and the spring 71
2,732, the lever 73 rotates clockwise, and the protrusion 731 moves the opening/closing lid 33 to the left to open the lid.

Further, as the lever 63 moves to the right, the lever 62 rotates clockwise, and the roller 623 presses the processing agent D. As a result, the incision in the bag 101 is torn, and the processing agent D sealed inside the bag is pushed downward and adheres to the processing agent application tape W on the pressure plate 75 provided on the main body 11 side.

Furthermore, the roller 64 is connected to the main body 11 by the closing lid.
It is pressed against the roller 74 provided on the side, but at that time,
A roll film F and a tape W coated with a processing agent are stacked and held between both rollers.

After closing the lid, the developing process for the roll film F is started by pressing a developing button (not shown) provided on the surface of the apparatus.

Next, an electric circuit for drive control when the above-mentioned motor is used as a drive means for winding and rewinding the tape W coated with the processing agent and the photographed film F will be explained.

FIG. 4 is a block diagram schematically showing this electric circuit.

First, the power supply circuit 1 will be explained. In this embodiment, power for driving the motor M can be supplied from either a household outlet or a battery. Changeover switch SW ₁
If you connect it to terminal a, it will connect to a household outlet.
If a DC voltage obtained by rectifying AC100V is connected to terminal b, the voltage from the battery will be applied to the output switch _SW3 . When the above-mentioned lid 12 is closed, the door switch SW ₂ is turned on, and the output switch SW ₃ is connected to, for example, the terminal a, so that a power supply voltage is applied to each circuit section of the control circuit.

The battery check circuit 2 in the power supply circuit 1 is
This circuit checks and displays the battery voltage when a battery is used as a power source.

By connecting the output switch SW ₃ to the terminal a side, the reset circuit 3 is activated, and the bistable multivibrator (hereinafter referred to as FF) and monostable multivibrator (hereinafter referred to as MM) used in the control circuit is activated. ) and initialize it.
Q output of each FF and MM is “L”, output is “H”
shall be. The motor M is now ready to be driven.

Here, when the operation start switch SW ₄ for driving the motor M is turned on, an operation start signal circuit 5 in the motor drive control circuit 4 is transmitted to the motor drive circuit 6.
A motor drive signal is issued to the motor M, and the motor M starts rotating. That is, an AND circuit connected between the operation start signal circuit 5 and the motor drive circuit 6
AND is provided to stop the motor M when a signal is issued from the operation end signal circuit 7 in the motor drive control circuit 4, but initially no operation end signal is issued. , the motor M starts rotating and starts winding up the processing agent coated tape W and the film F.

When the winding of the processing agent coated tape W and the film F is completed, the winding completion detection circuit 9 detects the motor rotation direction indicating circuit 1 based on the output from the rotation detection circuit 8.
0, the motor rotation direction indicating circuit 10 outputs a signal to the motor drive circuit 6 so that the rotation direction of the motor is reversed to the winding direction, and also outputs a signal to the timer 20 to indicate that the rotation direction of the motor is opposite to the winding direction. give a signal. When the timer 20 receives this signal, it issues a signal to the motor drive circuit 6 to stop the rotation of the motor M for a predetermined period of time. The motor M stops rotating in response to this signal, and after a certain period of time has passed, starts rotating in response to a signal from the timer 20. However, the rotational direction of the motor M at this time is opposite to the winding direction because a signal that is reverse to that at the time of winding has already been issued from the motor rotation direction indicating circuit 10 when winding is completed. As a result, the motor M rotates in the opposite direction to that during winding, so the processing agent coated tape W and the film F are rewound.

When the rewinding of the processing agent coated tape W and the film F is completed, a signal is output from the rewinding end detection circuit 21 to the motor rotation direction indicating circuit 10, and this signal causes the motor rotation direction indicating circuit 10 to in turn control the motor drive circuit 6. On the other hand, the signal that outputs a signal to rotate the motor M in the opposite direction to that during rewinding is simultaneously input to the operation end signal circuit 7, and when this signal is input, the operation end signal circuit 7 starts the motor drive circuit. By outputting an operation end signal to the AND circuit AND between the operation start signal circuit 22 and the operation start signal circuit 5, the rotation of the motor M is stopped, and the operation end buzzer circuit 22
signal and sound the buzzer BZ.

When the buzzer BZ sounds, it can be known that the film F has been processed with the developer on the tape W, and by opening the lid 12 and taking out the film F, all operations are completed.

In this block diagram, the winding end detection circuit 9 and the rewinding detection circuit 21 are configured separately, but in this embodiment, the winding end detection and the rewinding end detection are performed based on the rotational speed of the motor M. Since this is done by measuring , a single monostable multivibrator is used.

FIG. 5 shows an example of a specific electric circuit constituting the circuit of FIG. 4.

This electric circuit includes a power supply circuit 1 for supplying power to each part, a reset circuit 3 for initial resetting the flip-flop FF and the monomulti MM, a motor M, and a motor drive circuit for driving the motor M. It is composed of a circuit 6, a motor drive control circuit 4, a motor rotation detection circuit 8, and a motor rotation stop detection circuit 23.

First, the power supply circuit 1 will be explained. When the lid 12 of the photoconductor processing apparatus is closed, the door switch _SW2 is turned on, and a power supply voltage is applied to one terminal of the output switch _SW3 . When the output switch _SW3 is turned on, a voltage is applied to the base of the transistor _Tr1 , the transistor _Tr1 is turned on, and the power supply voltage is applied to the lead line l. When a voltage is applied to the lead wire l, the reset circuit 3 is activated, and an initial reset is applied to each of the above FF and MM.
The outputs of each FF and MM are "L" for Q and "H".

Here, when the operation start switch SW ₄ for driving the motor M is turned on, a motor operation start signal is input to the input terminal CP of FF ₁ of the motor drive control circuit 4 at "H" via the inverter INV ₁ . is applied. When “H” input is applied to CP of FF ₁ ,
The output of FF ₁ becomes "L", which is applied to input terminal 1 of NOR 1. Input terminal 2 of Noah 1 is
It is connected to the output Q of FF ₃ , and since FF ₃ is initial reset, its output Q
is “L”. Therefore, the output of Noah 1 is “H”
This output is applied to input terminal 1 of NAND 1 and NAND 2. Input terminal 2 of NAND 2 is
Since it is connected to the output of FF ₂ and this FF ₂ is also initial reset, the output is “H”.
is maintained, and this "H" is applied to the input terminal 2 of NAND 2, the output of NAND 2 becomes "L", and transistor Tr ₃ is turned on.

On the other hand, the output "H" of MM2 is applied to the input terminal 1 of AND1, and the output "H" of _MM2 is applied to the input terminal 2 of AND1.
Since is connected to the input terminal 2 of the NAND 2 described above, the output "H" of FF ₂ is applied, and therefore the output of AND 1 becomes "H", turning on the transistor Tr ₄ .

In this way, the transistor of the motor drive circuit 6
When Tr ₃ and Tr ₄ are turned on, current flows through the motor M in the direction of the arrow, and it starts rotating. When the motor M rotates, the processing agent coated tape W and the film F are wound up in an overlapping manner.

When winding of the processing agent-coated tape W and the film F is completed, the rotation of the motor M is braked by the tension of the processing agent-coated tape W and the film F, and the motor M is stopped.

In this embodiment, the rotation of the motor M is detected by attaching an encoder to the rotating part of the motor between the light emitting element LED ₁ and the light receiving element PH ₁ and measuring the pulse interval of light incident on the light receiving element PH ₁ . It's summery. Rotation can also be detected in other ways, for example using magnetic sensors. Alternatively, an overload detection mechanism provided on the cartridge shaft 21 may be used to detect the overload.

T ₁ of MM ₁ of motor rotation stop detection circuit 23 and
A capacitor C ₁ and a resistor R ₁ are connected to the T ₂ terminal, and the capacitor C ₁ and resistor R ₁ constitute an integrating circuit.

Input terminal B of MM ₁ is connected to output Q of FF ₁ , and the output of FF ₁ outputs "H" when motor M is rotating. The operating state is maintained only when

When the motor M is rotating, the input terminal A of MM ₁ is connected to the light receiving element PH ₁ by the encoder.
A pulse of light is incident on the light receiving element PH1, but when the motor M stops rotating, the pulse of light is no longer incident on the light receiving element _PH1 .

The output Q of MM ₁ is “H” when the interval between pulses applied to input terminal A of MM ₁ is shorter than the time constant determined by the values of capacitor C ₁ and resistor R ₁ that constitute the above-mentioned integrating circuit. ", but if the interval between pulses applied to input terminal A becomes longer than the above-mentioned time constant, it becomes "L". MM ₁
When the interval between pulses applied to input terminal A becomes longer than the time constant, the processing agent coated tape W
It is determined that the winding of film F is completed, and
The output Q of MM ₁ is set to "L" and is set to "H". Even if the output Q of MM ₁ becomes “L”,
A capacitor _{C4 is connected to Q through a resistor R6 ,} and the voltage at input terminal 1 of AND3, which is connected to this capacitor _C4 through a resistor _R7 , is MM for a short time. Even if the output Q of ₁ becomes "L", there is an "H" input. AND3 input terminal 2
Since "H" from the output of _MM1 is input to AND3, AND3 outputs an "H" pulse output only for the time that input terminal 1 of AND3 maintains "H".

When the output pulse of AND3 is applied to the input CP of FF ₂ , the output of FF ₂ is Q becomes “H”,
Q becomes "L". This _FF2 is a flip-flop provided to reverse the rotational direction of the motor M.

Since the output terminal of FF ₂ is connected to the input terminal B of MM ₂ , it starts operating when it changes from "H" to "L", and the capacitors connected to terminals T ₂ and T ₁ of MM ₂ The output is inverted to "L" for a certain period of time using a time constant determined by the values of C ₂ and resistor R ₂ . This MM ₂ is provided to adjust the time from when the motor M winds up the processing agent coated tape W and the film F until it starts rewinding, and is connected to T ₁ and T ₂ . capacitor
The time can be adjusted by changing the values of C ₂ and resistor R ₂ .

When the output of _MM2 becomes "L", the input 1 of AND1 connected to this output becomes "L", and the output of AND1 also becomes "L". Since the output of AND1 becomes “L”, the transistor
Tr ₄ is turned off and no current flows through motor M.
Rotation is stopped.

Then, after a period of time determined by the values of capacitor _{C 2 and} resistor R ₂ connected to T ₁ and T ₂ of MM 2 has elapsed, the output of MM ₂ outputs an H output again.

When the output of MM ₂ outputs "H" again, the output of FF ₂ , which is provided to reverse the rotational direction of motor M, has a Q of "H".
This "H" output is applied to the input terminal 2 of NAND 1 and the input terminal 2 of AND 2, and since NAND 1 outputs "L" and AND 2 outputs "H", transistor Tr ₂ and Tr ₅ is turned on,
The current flowing through the motor M is in the opposite direction to the direction of the arrow, and the motor M rotates in reverse, rewinding the processing agent coated tape W and the film F.

When the processing agent coated tape W and the film F are finished being rewound, as explained at the time of winding, the rotation of the motor M is stopped, and the motor rotation stop detection circuit 2 is activated.
Input A of MM ₁ of 3 is connected to motor rotation detection circuit 8.
There is no longer any pulse input from , the output Q of MM ₁ becomes "L", and becomes "H". At this time, the output of AND3 momentarily becomes "H" and is input to the input terminal CP of FF ₂ , which is provided to reverse the rotation direction of the motor, the output of FF ₂ is reversed, and Q becomes "H". ”The next side becomes “L”.

_FF3 next to _FF2 is a flip-flop provided to issue an operation end signal, and the voltage applied to its input terminal CP changes from "L" to "H".
It operates only when . Therefore, when winding of the processing agent coated tape W and film F is completed,
Since the output of FF ₂ changes from "H" to "L", FF ₃ does not operate, but the processing agent coated tape W
When rewinding of film F is completed, FF ₂
Since the output of changes from “L” to “H”,
_FF3 operates and its output Q outputs "H". The output Q of FF ₃ is connected to the input terminal 2 of NOR 1, and when the output Q of FF ₃ becomes "H", the output of NOR 1 becomes "L". Then, since the output of NAND 1 connected to the output terminal of NOR 1 becomes "H", transistor Tr ₂ is turned off, and no current flows through motor M. Therefore, motor M stops rotating.

Through the above operations, the processing agent application tape W and the film F are rewound, but in this state, the tension between the processing agent application tape W and the film F causes the film, etc. in Figs. 1 and 2 to be rewound. The hook 512 fixed to the winding shaft 51 may be stopped at the bottom of the main body 11. In this state, it is difficult to insert a hand into the main body, and it is difficult to remove a film or the like from the hook 512. Therefore, the operation end signal is
Even if the output is output from the output Q of the FF ₃ , the output of the Noah 1 connected to this Q is maintained at "H" for a certain period of time, and the motor M is rotated in the winding direction. A resistor R ₄ and a resistor R ₅ are connected in series to the output terminal of the NOR 1, and a capacitor C ₃ is connected between the resistor R ₄ and the resistor R ₅ . Therefore, even when the output of NOR 1 changes from "H" to "L", the capacitor _C3 is discharged, so that the output of NOR 1 remains "H" for a certain period of time. Since the output Q of FF ₂ , which is provided to reverse the rotation direction of the motor M, is H, NAND 2 and AND 1 become active, transistors Tr ₃ and Tr ₄ are turned on, and the motor M rotates in the winding direction for the time that the output of Noah 1 maintains "H", and hook 5
12 is in an easily accessible position, making it easier to remove the film F, etc.

Light emitting diode provided in power supply circuit 1
The LED ₂ shows an operation display in which it lights up continuously when the motor M is winding up the processing agent coated tape W and the film F, and lights up intermittently when it is rewinding.
One terminal of the light emitting diode LED ₂ is connected to the transistor Tr ₆ , which
The base of Tr ₆ is connected to AND4 via resistor R ₈ . Input terminal 1 of AND4 is connected to resistor _R4
It is connected to the output of Noah 1 via _R5 , and there is always an "H" input when motor M is rotating. Input terminal 2 of AND4 is NAND3
NAND 3 outputs "L" only when "H" is input to input terminals 1 and 2. Therefore, when the motor M is rotating in the winding direction, the output of AND2 is "L", so NAND3 outputs "H", and the light emitting diode provided in power supply circuit 1
Light up LED ₂ continuously. When the motor M rotates in the rewinding direction, the output of the AND2 is "H", which is applied to the input terminal of the NAND3. Since the pulse from the motor rotation detection circuit 8 is applied to the input terminal ₂ of the NAND 3 via the inverter INV 2, "L" and "H" are intermittently output from the NAND 3, and the "H" Only when this happens, the light emitting diode Tr ₆ of the power supply circuit 1 is turned on.

When the output of FF ₃ , which outputs the operation end signal, becomes “H”, this output is applied to the operation end buzzer circuit,
Buzzer BZ will sound.

When the buzzer BZ sounds, it is known that the operation of the photoreceptor processing apparatus has ended, and the lid 12 is opened and the film is taken out, thereby completing all operations.

FIG. 6 is a time chart of signals showing the above series of operations.

6. Effects of the Invention As mentioned above, the photoreceptor processing apparatus of the present invention is very useful especially in processing long photoreceptors,
Moreover, since the operation is simple and the operation is processed electrically, the processing operation can always be performed with high reliability.

Since the timer time can be adjusted, processing times such as development can be set with good control, and the processing time can be changed in response to changes in ambient temperature, properties of the photoreceptor, etc. to ensure good processing. I can do it.
Because the device is small and can be powered by both batteries and a household electrical outlet, there is no need to choose a location to process the photoreceptor.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, in which FIG. 1 is a cross-sectional view of the photoreceptor processing apparatus in an open state, and FIG.
The figure is a sectional view of the same device with the lid closed, FIG. 3 is a perspective view of the main parts of the drive section of the same device, FIG. 4 is a block diagram of the electric circuit for drive control, and FIG. A specific electric circuit diagram and FIG. 6 is a time chart. In addition, in the symbols used in the drawings, 1
1...Main body, 12...Lid, 32...Casing, 33...
...Opening/closing lid, F...Roll film, D...Processing agent, W...Processing agent application tape, P...Patrone, M...Motor, FF...Flip-flop, MM...Mono multivibrator, SW ……
Switch, Tr...transistor, LED...light emitting diode, PH...photodiode.

Claims (1)

[Scope of Claims] 1. A processing agent-coated body coated with a processing agent to treat a photoconductor is rolled up one on top of the other while the processing agent-coated surface is in contact with the exposed photoconductor, and then the processing agent-coated body and the processing agent-coated body are rolled up. A photoconductor processing apparatus configured to obtain a photoconductor treated with the processing agent by unwinding the photoconductor to its original state,
The control means controls the start, stop, and reversal of the drive direction of the driving means for driving the processing agent coated body and the photoconductor, and this control unit controls the processing agent coated body and the photoconductor. an operation start circuit that outputs a signal to drive the drive means for winding in layers, and a signal that outputs a signal to stop the drive of the drive means and reverse the driving direction of the drive means at the end of the winding. a winding end detection circuit; a timer for receiving a signal from the winding end detection circuit to issue a rewinding start signal and driving the driving means in a direction opposite to that at the time of winding; and an end of the rewinding. 1. A photoreceptor processing apparatus comprising: a rewinding end detection circuit that instructs the driving means to stop driving at certain times. 2. The photoreceptor processing apparatus according to claim 1, wherein the end of winding and the end of unwinding of the processing agent coated body and the photoreceptor are detected based on the rotational speed of the driving means.