JPH10104672A - Photosensitive material using quantity detection device for magazine of photosensitive material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect, store, preserve and display the using quantity of a photosensitive material or the residual quantity thereof in a magazine on a condition that the magazine removed from a main body is left as a single body. SOLUTION: This detection device is provided with a delivery rotating pulse generation device 10 discriminating the normal rotation and the reverse rotation of the core of the roll-like photosensitive material and generating an electric signal showing the number of revolution thereof, an updown counter device 24 counting the number of a rotating pulse, an arithmetic device 30 calculating the quantity of the drawn-out photosensitive material based on the counted number, the thickness of the photosensitive material and the roll diameter of the unuse photosensitive material, a display device 40 displaying the calculated result, a reset device 50 and a power source 60. Then, the magazine is not provided with a photosensitive material drawing-out device. Thus, even when the magazine is removed from the main body, the memory of the residual quantity does not disappear. Besides, the error of the residual quantity is not caused even when the photosensitive material is drawn out on the condition that the magazine is left as the single body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device mounted on a magazine for photosensitive material and displaying the amount of film used. More specifically, the present invention relates to an apparatus which is mounted on a photosensitive material magazine and detects and displays the amount of film used alone in a state independent of the main body of the magazine.

[0002]

2. Description of the Related Art As one of the modes for supplying a photosensitive material to a camera or an exposure apparatus, there is a mode using a magazine.
After the photosensitive material is mounted on the magazine, the magazine is set on a camera or an exposure device (hereinafter, referred to as “main body”) and used.
Heretofore, various methods have been used in the main body in order to detect and store and display the amount of photosensitive material used or the amount of photosensitive material remaining in the magazine. Conventional inventions relating to a device for detecting the usage of a photosensitive material include the following.

[0003] In a device for winding a film of a supply reel around a take-up reel, the rotation of the supply reel shaft and the moving length of the film are detected, and the remaining amount of the film and the feed amount are detected. Is shown, and a device for controlling the driving of the film is shown. JP, 62-294227, A Canon X-ray camera shows a device which detects the diameter of a wound film by a detector which comes into contact with the outer periphery of a roll-shaped film, and displays the remaining amount of the film. JP-A-63-120647 Matsushita Electric Industrial Co., Ltd. A storage medium such as a magnetic card is provided in a photosensitive material storage box to store the remaining amount of the photosensitive member, and the amount of the photosensitive material sent is measured to determine the present amount. An apparatus for calculating and displaying the remaining amount of the photosensitive material is shown. Japanese Patent Application Laid-Open No. 5-503174 Anacamp Inc. In a reloadable magazine, a metal disk with a notch is placed in the magazine, and a remaining length detection device that detects rotation of the film roll using an external sensor is shown. . Japanese Patent Publication No. 6-85069 Eastman Kodak Company A ferromagnetic element or conductive element is placed on the flange in the magazine, and a remaining length detection device that detects the rotation of the film roll using an external magnetic sensor or proximity sensor is provided. Is shown.

However, the conventional detection mechanism has the following various problems. (1) The conventional usage display device has functions of measurement, calculation, storage, and display by providing a device for performing calculation, storage, and the like on the main body side. Therefore, if the magazine is removed from the main unit while the photosensitive material remains in the magazine,
Since the magazine does not have a function of storing the used amount or the remaining amount of the photosensitive material, the used amount of the photosensitive material cannot be known. (2) The usage amount display device up to now has a detection, calculation and storage device on the main unit side, so that the magazine is mounted on the main unit and the usage amount of photosensitive material is detected when the photosensitive material is pulled out by the drive unit of the main unit. Therefore, in the state of the magazine alone, even if the photosensitive material is pulled out, it cannot be detected.
Therefore, when the user pulls out the photosensitive material mounted on the magazine from the magazine in order to pass the paper through the main body, an error occurs in the usage amount or the remaining amount of the photosensitive material. (3) Japanese Patent Application Laid-Open No. 63-120647 discloses a magazine having a non-volatile storage medium for storing the amount of photosensitive material used so that the storage is preserved even when detached from the main body. In the method of measuring the used length of photosensitive material and writing the data to the storage medium of the magazine, when the user pulls out the photosensitive material from the magazine in the magazine alone,
There is a disadvantage that an error occurs in the usage amount or remaining amount of the photosensitive material. (4) In JP-A-62-294227, a mechanical bar is brought into contact with the outer periphery of a roll of photosensitive material, the outer diameter is measured, and the remaining length is calculated from the thickness of the photosensitive material. Since the bar comes into direct contact with the photosensitive material, the photosensitive material may be damaged. Further, since the outer diameter of the photosensitive material roll is mechanically detected, there is a disadvantage in that an error occurs due to the dimensional accuracy and the mounting accuracy of the bar. (5) When measuring the feed amount of photosensitive material by detecting the rotation of the roll that sends the photosensitive material out of the magazine, slippage occurs between the roll and the photosensitive material, and the measurement of the feed amount cannot be performed accurately. There are cases. Further, since the roll directly contacts the photosensitive material, the photosensitive material may be damaged. Such an error in the amount of use becomes a serious problem when a variety of photosensitive materials are used and a magazine containing the photosensitive materials is replaced during use.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a method for storing the amount of photosensitive material used or the amount of photosensitive material remaining in a magazine in the state of a single magazine removed from a main body, and detecting withdrawal of photosensitive material. Aim. Another object of the present invention is to accurately measure the amount of use without damaging the photosensitive material. However, if the remaining length detection mechanism, which has been added to the main body, is provided in the magazine as it is, it is necessary to provide a drive device for drawing out the photosensitive material in the magazine, which increases the manufacturing cost of the magazine alone. It is not practical to have many expensive magazines. According to the present invention, the drive device is not provided in the magazine, but the functions of detecting, calculating, storing, and displaying the amount of film to be drawn are provided in the magazine. In this method, the amount of the photosensitive material used is measured without using a signal from a drawer roll that directly contacts the photosensitive material.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for detecting the amount of photosensitive material used in a magazine which is detachable from a main body and has a roll-shaped photosensitive material mounted therein. This problem is solved by installation. (1) a feed rotation pulse generator for generating a pulse by distinguishing between forward rotation and reverse rotation of a core of a roll-shaped photosensitive material rotating in a magazine and generating a pulse by replacing the rotation speed with an electric signal; (2) the rotation pulse generator; (3) The thickness of the photosensitive material and the diameter of the unused photosensitive material roll are input, and the amount of the photosensitive material extracted from the count of the up / down counting device is input. A central processing unit (arithmetic unit) for calculation; (4) a display unit for displaying the calculation result of the arithmetic unit; (5) a storage of the amount of photosensitive material pulled out when an unused photosensitive material is loaded in a magazine. A reset device for resetting, (6) the above (1) to
A power supply that supplies power to each device of (5).

In a preferred embodiment of the present invention, power is constantly supplied to the rotation pulse generator and the up / down counting device, and power is supplied to the arithmetic device, the display device and the reset device according to an external instruction. Supply. In a preferred aspect of the present invention, the rotation pulse generator includes one or more pairs of magnets that rotate integrally with a roll of photosensitive material and form a predetermined angle with respect to the center of rotation, and a control circuit board on a side surface of the magazine. And a pair of reed switches fixed to the center and forming an angle different from the predetermined angle with respect to the center.
The remaining amount of the photosensitive material in the magazine can be displayed on the display device by inputting the length of the unused photosensitive material into the arithmetic unit and subtracting the used amount from the unused photosensitive material length.

In the present invention, control is performed by the above-described devices (1) to (6) in accordance with the block diagram of FIG. When the core of the photosensitive material rotates, the rotation pulse generator 10 generates a pulse, and the pulse is counted by the up / down counting device 24,
Computing device for photosensitive material thickness and unused photosensitive material roll diameter
When input to and stored in 30, the arithmetic unit 30 calculates the length of the photosensitive material extracted according to the following equation, and displays the length 1 of the photosensitive material extracted from the magazine on the display device 40. 1 = πX (L−Xt / a) / a (1) where, X: number of up / down counts L: diameter of unused photosensitive material roll a: number of up / down count signals generated by one rotation of the roll t: photosensitive Enter and store the material thickness or unused photosensitive material roll length, and subtract the used photosensitive material length from the unused photosensitive material roll length to obtain the remaining photosensitive material length in the magazine. Can also. With the above configuration, the present invention can measure, calculate, store, and display the amount of photosensitive material extracted from a magazine by itself without obtaining information from the main body.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a detailed block diagram of the detection device of the present invention. FIG. 3 is a perspective view of the magazine of the present invention, and FIG. 4 is an exploded view of the side portion of the magazine of the present invention. As shown in FIG. 4, a control circuit board 4 is provided on the side surface of the magazine 1, and the following devices are provided thereon. Furthermore, the board cover 9 is placed on the control circuit board 4.
Is provided to protect each device on the control circuit board 4. FIG.
FIG. 2 is a plan view of the magazine control circuit board 4 of the present invention.
On the control circuit board 4, reed switches 20, 21, a forward / reverse rotation pulse generation circuit 22, an up / down counting device 24,
An arithmetic unit 30, a display device 40, a display switch 42, a reset switch 52, and a battery 60 are provided. As shown in FIG. 4, the substrate cover 9 is provided with an opening at a corresponding portion so that the liquid crystal display panel 40 can be seen from the outside. In addition, openings are provided in corresponding portions so that the display switch 42 and the reset switch 52 can be operated from the outside.

Each device provided in the detection device of the present invention will be described in order. (1) Sending rotation pulse generator 10 The sending rotation pulse generator 10 discriminates the rotation of the core 3 of the roll-shaped photosensitive material 2 rotating in the magazine 1 into a positive point or a reverse direction, replaces the rotation with an electric signal, and generates a rotation pulse. I do. The feed rotation pulse generator 10 includes magnets 18 and 19 provided on the outer ring 12 of the product support chuck 11 and reed switches 20 and 21 provided on the control circuit board 4 on the side surface of the magazine 1, which are forward and reverse. A rotation pulse generation circuit 22 is included. FIG. 7 shows the product support chuck 11. (a) is a left side view, (b) is a front view, and (c) is a right side view. The product support chuck 11 has a disc-shaped outer ring 12 and a disc-shaped inner ring.
14, a shaft 13 between the outer ring and the inner ring, and an inner ring 14
And an inner boss 16 in the shape of a cylinder adjacent to the inner boss, and these have an integral structure. FIG. 8 is a sectional view showing a state in which the product supporting chuck 11 is inserted into the core 3 of the photosensitive material 2 in the form of a roll. Similarly, a product support chuck is inserted into the photosensitive material 2 on the side opposite to the core 3. Inner boss of product support chuck 11
The outer diameter of 16 is almost equal to the inner diameter of the photosensitive material core, and the inner boss
16 can be inserted into the core. The inner boss 16 is tapered so that the tip portion is tapered from the middle in the axial direction, so that the inner boss 16 can be easily inserted into the core of the photosensitive material. The inner boss 16 is formed with a plurality of raised portions 17 in the radial direction.When the inner boss 16 is inserted into the core of the photosensitive material, the claw 17 engages inside the core, and the core and the inner boss 16 are connected to each other. The space between them is fixed. The outer diameter of the inner ring 14 is larger than the outer diameter of the inner boss 16 and the inner boss 16
When the core is inserted into the core of the photosensitive material, the core stops at the position where it comes into contact with the inner ring.

To set the photosensitive material in the magazine 1, the lid of the magazine 1 is opened from the line 1b as shown in FIG.
The photosensitive material into which the product support chuck 11 is inserted is set in the magazine 1. Magazine 13 for shaft 13 of product support chuck 11
1 is set in the recesses 1a on both sides, and the cover of the magazine 1 is closed. As shown in FIG. 8, when the product support chuck 11 to which the core 3 of the photosensitive material 2 is attached is set in the magazine 1, the outer ring 12 is located outside the magazine 1, and the inner ring 14 and the inner boss 16 are in the magazine. 1 outside the shaft 13
Engages with the concave portion 1a on the side surface of the magazine 1. In this state, when the photosensitive material is pulled out of the magazine, the product support chuck 11 rotates integrally with the core of the photosensitive material.

[0012] As shown in FIG.
Two magnets A and B18, 19 are provided on the outer peripheral portion of the outer ring 12 of the eleventh embodiment. The two magnets form an angle of 45 ° with the center 15 of the outer ring 12. Further, two reed switches A and B20, 21 for detecting a magnetic material are provided in a portion adjacent to the outer periphery of the outer ring 12 of the control circuit board 4 provided on the side surface portion of the magazine 1. The two reed switches form an angle of 35 ° with the center 15. FIG.
2 shows the positional relationship between the two magnets 18, 19 of the outer ring 12 and the two reed switches 20, 21. When the outer ring 12 rotates, the magnets 18 and 19 rotate together and pass through a position close to the reed switches 20 and 21. Reed switches 20 and 21 are connected to magnet 1
This is detected when 8,19 passes. 2 for center 15
Angles of two magnets 18, 19 and two reed switches
By providing a difference between the angles at which the outer ring 12 is rotated and the angles at which the outer ring 12 is rotated, it is possible to distinguish between forward rotation and reverse rotation when the outer ring 12 rotates.

FIG. 10 shows signals A and B of two reed switches 20, 21 when the outer ring 12 rotates forward and when the outer ring 12 rotates reversely.
And forward / reverse rotation pulses generated thereby. Since the angle formed by the two magnets A and B18,19 is different from the angle formed by the two reed switches 20,21, the outer ring
When 12 rotates, the on / off waveforms of signal A and signal B deviate. When the outer ring 12 rotates forward, the signal B is switched from off to on when the signal A is on, so that a forward rotation pulse is generated. When the outer ring 12 reverses, the signal B switches from on to off when the signal A is in the off state, so that a reverse rotation pulse is generated.

The sending rotation pulse generator 10 includes a core.
3 includes a forward / reverse rotation pulse generation circuit 22 that generates forward / reverse rotation pulses while distinguishing between forward rotation and reverse rotation. The normal / reverse rotation pulse generation circuit 22 is constantly supplied with power from the power supply 60 during use. In this embodiment, since one set of magnets is attached to the outer ring 12, the number of signals generated when the roll makes one rotation is one, and a in equation (1) is one. Outer ring
By increasing the number of magnets embedded in 12 to two or three sets, the number of signals generated when the roll makes one rotation increases to two or three, and a in equation (1) becomes two or three. Providing a plurality of sets of magnets to be attached to the outer ring 12 improves rotation detection accuracy.

(2) Up / Down Counting Device 24 As shown in FIG. 2, the up / down counting device 24 counts the number of rotation pulses generated by the forward / reverse rotation pulse generating circuit 22. Power is constantly supplied to the up / down counting device 24 from the power supply 60, and counting is performed by a signal from the rotation pulse generating device. The up / down counting device 24 includes a part for storing the counting result. In this case, when the count result is negative, the count is reset to “0” by the most significant bit of the count device. As shown in FIG. 6, the up / down counting device 24 is provided on the control circuit board 40 on the side surface of the magazine.

(3) Arithmetic Unit 30 As shown in FIG. 2, the arithmetic unit 30 calculates the amount of used photosensitive material based on the count number of the up / down counting device, the thickness of the photosensitive material, and the diameter of the unused photosensitive material roll. Is calculated.
As shown in FIG. 6, the arithmetic unit 30 is provided on a control circuit board 40 on the side surface of the magazine. The arithmetic unit 30 inputs and stores the photosensitive material thickness t and the unused photosensitive material roll diameter L, and stores the number a of up / down count signals generated by one rotation of the roll. When the count number X is input from the up / down counting device, the arithmetic unit 30 calculates the length of use since the reset switch was pressed, according to the formula l = πX (L−Xt / a) / a (1). I do. If the roll length calculated from the count number X of the up / down counting device 24 becomes longer than the length of the loaded photosensitive material roll, the up / down counting device is used.
A reset signal is sent to 24 to reset the count number X. In the present embodiment, the length of the used photosensitive material is obtained. However, the length of the unused photosensitive material roll is input and stored, and the used photosensitive material length is subtracted from the unused photosensitive material roll length to obtain a magazine. The length of the photosensitive material remaining inside can also be determined.

(4) Display Device 40 The display device 40 displays the used amount or the remaining amount of the photosensitive material calculated by the arithmetic unit 30. In this embodiment, the display device uses a liquid crystal display panel. As shown in FIGS.
Numeral 40 is provided on the control circuit board 40 on the side surface of the magazine, and can be seen from the outside through a hole provided in the board cover 9. In the circuit of the present invention, the power consumption of the arithmetic unit 30 and the display unit 40 is large. During the use of the magazine, it is not necessary to always display the amount of photosensitive material, but only to display the amount of photosensitive material when the magazine is removed from the main body. Therefore, in this embodiment, an up-down counting device
24 and the sending rotation pulse generator 10 are always supplied with electric power, but the computing device 30 and the display device 40 are supplied with electric power from a power supply only when necessary. That is, as shown in the block diagram of FIG. 2, a display switch 42 is provided, and the power supply of the power supply cutoff device 44 can be connected and disconnected by the display switch 42. Display switch as shown in FIGS.
Reference numeral 42 is provided on the control circuit board 40 on the side surface of the magazine, and the display switch 42 can be externally operated through a hole provided in the board cover 9. Power supply cutoff device from power supply only when display switch is pressed
Electric power is supplied to the computing device 30 and the display device 40 via 44, and the amount of the photosensitive material used by the computing device 30 is calculated and displayed on the display device 40.

(5) Reset device 50 As shown in FIGS. 4 and 5, the reset device 50 is provided on the control circuit board 40 on the side surface of the magazine, and the reset switch 52 is externally connected through a hole provided in the board cover 9. Can be operated. When a new photosensitive material is loaded in the magazine, the reset switch 52 is pressed to reset the counting result. In this case, it is preferable that the switch 52 is reset only when the switch 52 is continuously pressed for several seconds so as not to be reset by mistake. Alternatively, the counting result can be automatically reset by opening the cover of the magazine.

(6) Power Supply Required for the Apparatus As shown in FIG. 6, a battery 60 is provided as a power supply on the control circuit board 40 on the side surface of the magazine. The power supply 60 includes a sending rotation pulse generator 10 and an up / down counting device.
24, the arithmetic unit 30, the display unit 40, and the reset unit 50. However, as described above, power is supplied to the arithmetic unit 30 and the display device 40 from the power supply in accordance with an external instruction from the display switch 42. FIG. 11 shows a state in which the magazine of the present invention is set and used in an exposure apparatus. Roll out photosensitive material 2 from magazine 1 to photosensitive material 2
The data is burned by the data burning device 6. The photosensitive material is sent out by roll 7 and sent out.
After being cut to a predetermined length by a cutter 8, it is sent to a developing machine. The present invention can be used not only for an exposure apparatus, but also for an apparatus for supplying a photosensitive material by a magazine such as a camera.

[0020]

According to the present invention, even if the magazine is removed from the main body while the photosensitive material remains in the magazine,
The amount of photosensitive material used or the remaining amount can be stored in the magazine and displayed as necessary, so when the magazine is set in the main unit again, it is possible to determine whether the amount of remaining photosensitive material is sufficient. In addition, inventory control when a plurality of photosensitive materials are used is easy. Also, even when the photosensitive material is pulled out of the magazine in the state of the magazine alone,
Since the amount of photosensitive material used can be measured, no error occurs in the amount of photosensitive material used or the remaining amount even if the photosensitive material is pulled out when the magazine is mounted on the main body.

[Brief description of the drawings]

FIG. 1 is a control block diagram of an apparatus according to the present invention.

FIG. 2 is a detailed block diagram.

FIG. 3 is a perspective view of a magazine according to the present invention.

FIG. 4 is an exploded perspective view of a magazine according to the present invention.

FIG. 5 is a perspective view of a magazine according to the present invention in a state where a lid is opened;

FIG. 6 is a front view of a control board.

FIG. 7 is a front view and a side view of the product support chuck.

FIG. 8 is a cross-sectional view showing a state where a product supporting chuck is set on a core of a photosensitive material.

FIG. 9 is a diagram showing a positional relationship between a magnet of an outer ring and a reed switch.

FIG. 10 is a diagram showing a forward rotation pulse and a reverse rotation pulse generated by a reed switch.

FIG. 11 is a sectional view showing a state in which the magazine of the present invention is set in a main body.

[Description of Signs] 10 Sending rotation pulse generator 24 Up / down counting device 30 Computing device 40 Display device 50 Reset device 60 Power

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G03C 3/00 572 G03C 3/00 572C

Claims (4)

[Claims] An apparatus for detecting a usage amount of a photosensitive material mounted on a magazine which is detachable from a main body and has a roll-shaped photosensitive material mounted therein, wherein a normal rotation of a core of the roll-shaped photosensitive material rotating in the magazine. A rotation pulse generator that generates pulses by replacing the rotation speed with an electric signal to distinguish reverse rotation, an up-down counter that counts the pulses generated by the rotation pulse generator, the thickness of the photosensitive material, and a roll of unused photosensitive material. Enter the diameter,
An arithmetic unit for calculating the amount of photosensitive material drawn from the magazine from the count number of the up / down counting device; a display unit for displaying the calculation result of the arithmetic unit; and an unused photosensitive material mounted in the magazine. At the time, a reset device for resetting the storage of the amount of the photosensitive material withdrawn, and power to the rotation pulse generating device, the up / down counting device, the arithmetic device, the display device, and the reset device. And a power supply for supplying. 2. The usage amount detection device according to claim 1, wherein the rotation pulse generation device and the up / down counting device are constantly supplied with electric power, and the rotation pulse generation device and the up / down counting device are supplied with power at all times to the calculation device, the display device, and the reset device. 2. The detecting device according to claim 1, wherein the power is supplied by an external instruction. 3. The usage detecting device according to claim 1, wherein the rotation pulse generator rotates integrally with a roll of photosensitive material and forms a predetermined angle with respect to the center of rotation. 2. The detection apparatus according to claim 1, further comprising a pair of reed switches fixed to the control circuit board on the side surface of the magazine and forming an angle different from the predetermined angle with respect to the center. 4. The used amount detecting device according to claim 1, wherein the used amount is subtracted from the unused photosensitive material length by inputting the unused photosensitive material length to the arithmetic unit. 2. The detection device according to claim 1, wherein the display device displays the remaining amount of the photosensitive material in the magazine on the display device.