JPH02262137A - Sheet film loading method - Google Patents

Abstract

PURPOSE:To speedily load a sheet film into a cassette when the sheet film of the same type is continuously taken out by associating a magazine, which contains a film having the highest take-out frequency, with a take-out means, thereby setting film take-out preparation condition. CONSTITUTION:In the preparation condition, the take-out means 14 is associated with the magazine 12 containing the film which has the highest take-out frequency. When the sheet film F is taken out of the magazine 12 containing the film, which has the highest take-out frequency, the magazine 12 is not required to be moved in relation to the take-out means 14, therefore take-out operation is speedily performed. The magazine 12 containing the film F which is taken out most frequently in a prescribed period of time can be determined by calculating frequency at which each film is selected in the prescribed period of time. Thus, when sheet films to be used have different frequency, a film with the high frequency of use can be speedily taken out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sheet film loading method for selectively taking out sheet films from a plurality of magazines and loading them into a cassette.

[Conventional technology]

X-ray sheet film, which is used as a device for loading X-ray film into an imaging cassette, is sorted by type and stored in a plurality of magazines, and the ejecting means and these magazines are selectively corresponded to each other. , a loading device is used in which the end of the film in the magazine is taken out by the suction of the taking out means, and this is loaded into the cassette (
JP-A-62-249833, JP-A-63-22814
No. 2).

In these sheet film loading devices, the magazines are arranged in multiple stages vertically, and in the standby state, a particular magazine among the multiple stages of magazines and the ejecting means are placed in corresponding positions, -
For example, the position of the take-out means corresponding to the lowest magazine is set in a ready state in preparation for the next film take-out. When a cassette is inserted here, a magazine containing a film corresponding to the type of this cassette is selected, and the magazine or the ejecting means is moved in the vertical direction so that the ejecting means corresponds to the selected magazine. The sheet film in the magazine is taken out and loaded into the cassette. After the sheet film is loaded into the cassette, the ejecting means and the magazine return to the specific position again, and enter the quasi-i state for loading the next sheet film.

Therefore, in such a sheet film loading device, when the sheet film is successively taken out from a magazine different from the magazine to which the ejecting means corresponds in the ready state, the ejecting means and the magazine must be connected between the successive ejecting states. requires relative movement to a specific position, which impedes quick removal.

[Purpose of the invention]

The present invention has been made in consideration of the above facts, and an object of the present invention is to provide a sheet film loading method that can quickly load the same type of sheet film into a cassette when the same type of sheet film is taken out in succession.

[Means to solve the problem]

A first invention according to the present application is a sheet film loading method in which a plurality of magazines in which sheet films are respectively stored and a take-out means selectively correspond to take out sheet films and load the sheet films into a cassette. A method,
The present invention is characterized in that the magazine containing the film that is most frequently taken out within a predetermined period is associated with the taking-out means to prepare for taking out the film.

In the present invention, in the preparation state, the ejecting means corresponds to the magazine in which the film that is most frequently taken out is accommodated. This eliminates the need for relative movement between the machine and the machine, allowing quick removal work. If a film is selected in a magazine that is different from the magazine containing the film that is frequently taken out, the magazine and the taking out means will move to different relative positions, but this relative movement occurs less frequently. As a result, the overall sheet film removal time is reduced. The magazine containing the film most frequently taken out within a predetermined period can be determined by calculating the frequency of each film selected within the predetermined period. Alternatively, the operator may decide which film is taken out most frequently.

A second invention according to the present application is a sheet film loading method in which a plurality of magazines in which sheet films are respectively stored and a take-out means selectively correspond to take out sheet films and load the sheet films into a cassette. The present invention is characterized in that the magazine from which the previous sheet film was taken out is associated with the take-out means to prepare for taking out the next film.

Sheet films that are frequently taken out are likely to be taken out consecutively, so by matching the magazine from which the previous sheet film was taken out with the take-out means, the magazine and take-out means will be matched the next time the film is taken out. There is a high possibility that there is no need to perform relative movement. Therefore, in the present invention, the time required to take out the sheet film is shortened by associating the magazine and the taking-out means as described above.

Note that in order to selectively make the film ejecting means correspond to a plurality of magazines, the film ejecting means may be moved to correspond to any one of the plurality of magazines, or the plurality of magazines may be moved together to correspond to the film ejecting means. Any one of the magazines may be made to correspond to the ejecting means.

Further, in the present invention, in addition to the case in which the take-out means directly loads the sheet film into the cassette after the take-out means takes out the sheet film from the magazine, the taken-out sheet film is held in the holding means, and the holding means It is also possible to load the sheet film into the cassette while holding it, and then load the sheet film into the cassette.

[Embodiments of the invention]

FIG. 1 shows a sheet film loading device 10 to which the present invention is applied.

This sheet film loading device 10 has a framework formed by a frame 11, and an outer plate 11A fixed to the frame 11, which has a light-shielding structure inside. A plurality of magazines 12 are installed in the lower part of the frame 11 in the vertical direction, and these magazines 12
A sheet film F is housed inside each of them. These sheet films F are of different types (size, film type) for each magazine 12, and a desired sheet film F is loaded into the cassette 18 by the take-out means 14 and the holding means 16. There is.

However, it is not limited to the case where different types of films are housed in each magazine 12, and when there is a frequently used film, the same type of film may be housed together in a plurality of magazines.

When this cassette 18 is manually loaded (in the direction of arrow A) into the interior through the loading port 10A (usually shielded) provided at the top of the sheet film loading device 10, it is pulled in by the driving force of the cassette drive mechanism 20. It is configured so that it can be placed in the position shown in FIG.

As shown in FIG. 3, this cassette 18 has a dish-shaped cassette main body 18A whose interior is used as a housing portion for the sheet film F, and a lid plate 18B is pivotally supported by one end of this cassette main body 18A. The inside can be opened and closed. A claw 22 protruding from the tip of the cover plate 18B engages with a window 18C formed in a part of the cassette body 18A to maintain the closed state of the cassette body 18A, but the cassette drive mechanism 20 does not open the cassette 18. By pressing the lid pin 24, the lid opening pin 24 pushes the claw 22 into the cassette main body 18A, and the lid plate 18B is opened as shown in FIG. 3 by the biasing force of an elastic body (not shown). has been done.

Further, as shown in FIG. 1, a take-out means 26 is disposed near the film entrance/exit of the loaded cassette 18, and a suction cup 28 receives a driving force from a drive source (not shown) to remove the photographed film inside the cassette main body 18A. It is configured to take out the sheet film F and deliver it to the conveyance roller 32. These conveyance rollers 32 are configured to receive driving force from a drive source (not shown) and send out the photographed sheet film F to the developing device 34 (in the direction of arrow B).

Note that when the cassette 18 is loaded into the sheet film loading device 10 and the lid plate 18B is opened by the lid opening pin 24, a lid opening/closing mechanism (not shown) (for example, Utility Model No. 63-1
41950 and Utility Model Application Publication No. 63-141951), the cover plate 18B is opened further,
When a new sheet film F is loaded after taking out the photographed sheet film F, the lid plate 18B may be closed and the sheet film F may be pushed out from the loading opening 10A.

Further, a film type identification sensor 168 is installed in the sheet film loading device 10 near the loading position of the cassette 18 (the position shown in FIG. 1).

This film type identification sensor 168 is connected to the control device 130 and is configured to be able to detect a film type identification signal (not shown) attached to the cassette 18. Based on this signal, the control device 130 can select the sheet film F to be loaded into the cassette.

As shown in FIG. 2, the magazine 12 is formed in the shape of a deep dish, and a large number of unexposed sheet films F are stored therein in a stacked state. The upper end surface of this magazine 12 has a fixed cover plate 12A that closes the half opposite to the ejecting means 14, and the other half serves as an ejecting opening 12B. A slide lid 12C corresponds to the extraction opening 12B, and this slide lid 12C is connected to the extraction opening 12B as shown in FIG.
It is configured such that it can slide from a state where B is securely closed to a state where it slides under the lid plate 12A and a state where the extraction opening 12B is opened.

These magazines 12 are each housed in a movable table 36 installed in multiple stages on the frame 11 of the sheet film loading device 100. These movable tables 36 are formed into a frame shape so as to support the peripheral bottom portion of the magazine 12. At the upper ends of both sides of the movable table 36, there are bent portions 3 that protrude in the horizontal direction.
6A is formed, and this bent portion 36A is placed on a roller 38 whose axis is horizontally supported on the frame 11. Each movable table 36 is in a standby position when the magazine 12 is loaded and shown in solid lines in FIG.
Open door 11B of No. 1 and move to the left side of Figure 1 (arrow C
Direction) The pulled out state is the replenishment position for the sheet film F. Furthermore, this magazine 12 is moved from the standby state to the right in FIG. 1 (in the direction of the arrow), and the state where the take-out opening 12B reaches below the take-out means 14 is the film take-out position. In order to stop the magazine 12 at a predetermined position while the sheet film F is on standby, a notch 36B is formed in the bending part 36A, and this notch 36B is connected to the roller 3.
8, the movement of the moving table 36 is stopped.

As shown in FIG. 2, the extraction means 14 is provided with a pair of lifting frames 122 that are parallel to each other. These elevating frames 122 are fixed in parallel to each other by a plurality of connecting rods 124, and a guide shaft 128 passes through a guide block 126 fixed on the outside. Also, a similar guide block 127 is provided on one side of the elevating frame 1220.
are fixed and the screw shaft 132 is screwed together. The axes of the guide shaft 128 and the screw shaft 132 are vertical, and both upper and lower ends of the guide shaft 128 are fixed to the frame 11, and the screw shaft 132 is supported by the frame 11 and the pulse motor 12.
9 (Fig. 1) to rotate by receiving the driving force. Therefore, when the screw shaft 132 rotates under the driving force of the motor, the ejecting means 14 is raised or lowered so that it can correspond to each magazine. Further, the pulse motor 129 is controlled to stop driving by the control device 130.

A suction cup 136 is disposed between these elevating frames 122 at the tip of an arm 134, and this arm 134 is pivotally supported by a shaft 138 to the tip of an arm 142. The arm 142 is supported by a shaft 144 on the lifting frame 122 . In order to control the rotation angles of these arms 134, 142, pulse motors 146, 148 connected to the control device 130 are attached to the arm 142 and the lifting frame 122, respectively, and endless bells 152, 154 generate their rotational force. is transmitted to arms 134 and 142.

As a result, the suction cup 136 moves approximately vertically downward from the state shown in FIG. The leading end of the sheet film F thus attracted is sent out to the holding means 16.

A pulley 62.64 is pivotally supported at the lower part of the lifting frame 122 by a support shaft 56.58.

An endless timing belt 6 is attached to these pulleys 62 and 64.
6 is wrapped around it. The support shaft 58 is the elevating frame 122
It is rotated by receiving the driving force of a pulse motor 68 fixed to. This pulse motor 68 is also controlled by the control device 130. Further, a pull-out pin 72 is fixed to a part of the endless timing belt 66, and its axis is parallel to the pulleys 62 and 64, and corresponds to the engagement arm 74 fixed to the front end of the moving table 36. ing. This engagement arm 74 has a pull-out pin receiving portion 74A that opens downward in a U-shape, and when the endless timing belt 66 is rotated clockwise in FIG.
2 is accommodated in this pull-out pin receiving portion 74A, whereby the movable table 36 is pulled out together with the magazine 12 in the direction of the arrow below the take-out means 14, and is set at the film take-out position. Note that the engagement arm 74 includes a pulley 62,
A notch 74B is formed to avoid interference with the endless timing belt 66.

When the movable table 36 is pulled out to the film ejection position by the rotation of the boo Q62, 64, the arm 12 protruding upward from the slide lid 12C of the magazine 12 is pulled out halfway through the movement.
D comes into contact with the magnetic adsorption piece 76 installed on the connecting rod 124 of the elevating frame 122 and is prevented from moving, so the magazine 12 moving together with the moving table 36 and the slide lid 12C move relative to each other, and the ejection opening 12B opens. It is now open. Furthermore, when the movable table 36 and the magazine 12 are returned to the standby position by reverse rotation of the pulleys 62 and 64, the adsorption piece 76 prevents the slide lid 12C from moving with magnetic force, so the slide lid 12C moves relative to the magazine 12. Then, the extraction opening 12B is closed.

As shown in FIG. 2, a pair of elevating frames 42 are fixed to the holding means 16 in parallel with each other by a plurality of connecting rods 44, and the sheet film F is held between these elevating frames 420. There is.

Guide block 4 fixed to the outside of the lifting frame 42
A guide shaft 48 whose axis is perpendicular and whose upper and lower ends are fixed to the frame 11 passes through the guide shaft 6 . A screw shaft 52 is screwed into a similar guide block 47 on one of the lifting frames 42, and this screw shaft 52 is arranged parallel to the guide shaft 48. Therefore, when the screw shaft 52 rotates under the driving force of the pulse motor 54 or the like, the elevating frame 42 moves up and down to a predetermined position so that it can accommodate each magazine 12 and cassette 18. The pulse motor 54 is driven and stopped by a control device 130.

A pair of upper and lower entrance clamping rollers 82 are pivotally supported in parallel to each other between the elevating frames 42 near their lower ends. These entrance holding rollers 82 are for receiving the sheet film F taken out from the magazine 12 by the suction cup 136, feeding it in the direction of arrow E, and holding the sheet film F curved in an approximately semicircular shape. In addition, a pair of intermediate portion nipping rollers 84 and a pair of intermediate portion nipping rollers 86 are pivotally supported in correspondence with the intermediate portion of the sheet film F held in a semicircular shape, in the same manner as the entrance nipping roller 82 . Furthermore, a pair of outlet clamping rollers 88 are provided for clamping the leading end of the sheet film F held in a semicircular shape. Therefore, when a long sheet film F is held, the rear end of the sheet film F is held by the artificial holding rollers 82, the middle part is held by the intermediate IB holding rollers 84 and 86, and the leading end is held by the exit holding rollers 88. That will happen. Further, even when the sheet film F is short in size, the leading end portion is always held by the exit holding rollers 88.

The exit clamping roller 88 of No. 1 is pivotally supported near the tip of a tilting frame 94 that is pivotally supported by a shaft 92 to the lifting frame 42 . A pin 96 is attached to the tip of the tilting frame 94 so that a first
A swing link 97 is pivotally supported, and the other end of the first swing link 97 is connected to the second swing link 9 by a pin 98.
It is pivoted to 9. This second swing link 99 is pivotally supported by a rotating shaft 100 that is passed to the lifting frame 42, and a portion of an endless belt 104 is wound around a pulley 102 fixed to this rotating shaft 100. Another part of this endless belt 104 is a pulse motor 106 fixed to the lifting frame 42 and controlled by a control device 130.
It is wound around a pulley 108 fixed to the output shaft of.

Therefore, when the pulse motor 106 rotates, the second swing link 99 rotates together with the rotating shaft 100, and the first swing link 97 receives this rotational force and moves the tilting frame 94 in the counterclockwise direction (in the direction of arrow G) as shown in FIG. ). As a result, the sheet film F moves to above the entrance of the cassette 18 with its leading end held by the outlet holding rollers 88, thereby making it easier to insert the sheet film F into the cassette 18.

As shown in FIG. 2, on the outside of the lifting frame 42, a pulley 114 and an endless timing belt 116 are provided for transmitting the driving force of the pulse motor 112 to the entrance clamping roller 82, the intermediate clamping roller 84, 86, and the exit clamping roller 88. Multiple pieces are used.

The pulse motor 112 is driven and stopped by a control device 130.

FIG. 4 shows a schematic block diagram of the control device 130. The control device 130 includes a CPU 158 and a RAM 16.
0, ROM162, input port 164 and output port 1
It is equipped with 66. A film type identification sensor 168 and a keyboard 131 are connected to the input port 164 . In this embodiment, the extraction means 14 and the holding means 16
Three types of modes are available: manual mode, calculation mode, and previous mode. Manual mode is keyboard 131
Always selects the magazine containing the specified film,
The calculation mode calculates the frequency and selects the magazine containing the film that is most frequently taken out within a predetermined period, and the previous mode selects the magazine from which the previous sheet film was taken out. Since there is a high possibility that frequently used sheet films will be taken out consecutively, in the previous mode, after the previous sheet film is taken out, it will be in a ready state corresponding to the magazine selected last time, so that it will be ready for the next time taking out. It is possible to select sheet films that are frequently used. Therefore, the keyboard 131 includes keys for selecting these three types of modes and keys for inputting data. In addition, the output port 166.
Pulse motor 129.54.68.146.148.1
12 and 106 are connected.

Next, the operation of this embodiment will be explained according to the flowcharts of FIGS. 5(A) and 5(B).

First, the operator selects from the keyboard 131 a mode suitable for the work content from among the three magazine selection modes. For example, if there is a possibility that multiple types of films will be used randomly in terms of number of times and order, select the calculation mode, and if you mainly use a single film and occasionally use other films, select the calculation mode. Select the mode and
When using multiple types of film in sequence multiple times, select the previous mode. The mode and data input from keyboard 131 are stored in RAM 160. The contents of this RAM 160 are rewritten every time the mode is switched.

In step 200, the mode entered on the keyboard 131 and stored in the RAMI 60 is read. Subsequently, in step 202, it is determined whether the stored mode is the manual mode. If the mode is manual mode, the process moves to step 204. In manual mode, film type and size data are required to select a magazine. For this reason, the operator selects the manual mode by operating keys, and then inputs these data and stores them in the RAM. In step 204, these data are read,
The magazine number corresponding to the magazine in which the corresponding sheet film F is stored is determined. This magazine number is determined in advance for each magazine 12 and stored in the ROM, and the operator stores the sheet film corresponding to the magazine number in each magazine. Incidentally, after a film is stored in a magazine, a magazine number may be determined to correspond to the film and stored in the RAM. In step 206, it is determined whether the data stored in the RAM is initial input data or data changed from the previous input data. That is, the data is the first data entered manually after the operator turns on the power to the sheet film loading device 10 and selects the manual mode, or the data previously input by the operator while operating the sheet film loading device 10 in the manual mode. Determine whether the . If the judgment in step 206 is affirmative, the magazine number is memorized in step 208, and if there is a previously stored magazine number, it is updated.) If the judgment in step 206 is negative, step 208 is not executed and the magazine number is No updates will be made.

In step 202, if it is determined that the calculation mode is the previous mode, the stored magazine number is read out in step 210. Immediately after the power of the sheet film loading device 10 is turned on, that is, in a state where sheet film has not been loaded even once, the calculation monitor and the magazine number of the previous mode are not stored, so step 210 is performed.
Then, read out the predetermined fixed magazine number. - After loading the sheet film, the magazine number specified according to each mode is read out.

Next, in step 212, the ejecting means 14 and the holding means 16 are moved to correspond to the magazine corresponding to the magazine number. This movement is performed by the screw shaft 52 that guides the lifting frame 42.
, and the screw shaft 132 that guides the lifting frame 122 rotates under the driving force of the pulse motor 54, 129, whereby the lifting frame 42 and the lifting frame 122 move up and down.

With the above steps, the sheet film loading device 10 is ready to take out the film.

Step 214 performs loading of sheet film.

A detailed routine for this loading will be described later.

After loading the sheet film F, the process moves to step 216 and the mode is determined. In the case of manual mode, the process directly advances to step 226. In the case of the calculation mode, the process moves to step 218, in which the number of uses of the counter corresponding to the magazine used this time among the counters for counting the number of uses prepared for each magazine is counted up. Next, in step 220, it is determined which magazine has been used the most times within a predetermined period of time, thereby determining the magazine containing the most frequently taken out film, and in step 222, the magazine number is stored in the RAM. If it is determined in step 216 that it is the previous mode, the magazine number of the magazine used this time is stored in the RAM in step 224.

In step 226, it is determined whether or not the processing has been completed. If the sheet film loading work has been completed, this routine is ended, and if the work has not been completed, step 200 is executed again.

If the mode is changed during the work, the mode stored in the RAM is changed, so the changed mode is read out in step 200 and the process is changed.

Next, the details of the sheet film loading routine in step 214 will be explained (see FIG. 5(B)). Note that the number of pulses for driving each pulse motor is determined in advance.

When it is determined in step 228 that the cassette 18 containing the photographed sheet film F has been loaded into the sheet film loading device 10 from the loading opening 10A in the direction of arrow A, the cassette drive mechanism 20 is activated in step 230. The cassette drive mechanism 20 presses the cassette 18 against the opening pin 24, so that the lid plate 18B is opened as shown in FIG. 1.3.

Next, in step 232, the extraction means 26 is activated. As a result, the suction cup 28 of the ejecting means 26
Since the sheet film F in 8A is sucked and taken out and delivered to the conveying roller 32, the photographed sheet film F is sent to the developing device 34 and developed.

In the next step 234, the type of film attached to this cassette 18 is identified and the magazine number is determined.

In step 236, the magazine number determined in step 234 is compared with the magazine number of the magazine to which the ejecting means 14 and the holding means 16 currently correspond, and the ejecting means 14
4 and whether or not the holding means 16 needs to be moved is determined.

If the magazine numbers match, there is no need to move the ejecting means 14 and the holding means 16, so the process moves to step 244. If the magazine numbers do not match, it is necessary to move the ejecting means and holding means 16 from the currently corresponding magazine, so step 238 is executed. In step 238, the relative distance between the magazine corresponding to the loaded cassette 18 and the magazine currently supported by the ejecting means 14 and the holding means 16 is calculated by the number of pulses.

In step 240, the pulse motor 129.54 is driven to move the ejecting means 14 and the holding means 16 to correspond to the magazine corresponding to the loaded cassette 18, and in step 242, the magazine number is stored.

A cassette 18 loaded with the extraction means 14 and the holding means 16
Step 2
44, the pulse motor 68 is rotated to rotate the endless timing belt 66 clockwise in FIG. As a result, the pull-out pin 72 engages with the engagement arm 74 to move the movable table 36 from the standby position of the magazine 12 to the film take-out position. As the magazine 12 moves, the arm 12D of the slide lid 12C comes into contact with the suction piece 76, so the slide lid 12C enters below the lid plate 12A and the ejection opening 1
2B is released.

In the next step 246, the pulse motors 146, 148
is rotated. This causes the suction cup 136 to move toward the magazine 12.
The innermost sheet film F is pressed. At the same time, negative pressure from a negative pressure source (not shown) is transmitted to the suction cup 136, whereby the vicinity of the leading end of the sheet film F is attracted. Then the suction cup 136 is driven by a pulse motor 146.148
The sheet film F is raised by zero rotation and lifted from the take-out opening 12B, and the sheet film F is inserted between the entrance holding rollers 82. In the next step 248, the pulse motor 112
is rotated, the leading end of the sheet film F is sent out in the direction of arrow E, and the supply of negative pressure to the suction cup 136 is stopped. Therefore, the sheet film F passes from the inlet clamping roller 82 to the intermediate clamping rollers 84 and 86, the leading end reaches the intermediate clamping roller 86, and the leading end is curved into an arc with the leading end being clamped by the exit clamping roller 88. is retained. In order to move the sheet film F smoothly between these rollers, a guide blenoid 89 (first
(shown in phantom lines in the figure) is preferably provided.

When the sheet film F is stored in the holding means 16, the suction cup 136 is returned to the reference position again in step 250, the pulse motor 68 is reversed, and the movable table 36 is moved to the magazine 12.
Return to standby position.

In the next step 252, the pulse motor 54 is driven. As a result, the holding means 16 is raised by the rotation of the screw shaft 520, and the exit clamping roller 88 is moved to the entrance/exit of the cassette 18, and the lifting of the holding means 16 is stopped. Step 2
54, the pulse motor 106 is rotated to rotate the tilting frame 94 counterclockwise (in the direction of arrow G) as shown in FIG. let As a result, the leading end of the sheet film F is reliably accommodated in the cassette 18 by the rotation of the exit nipping roller 88.

In this way, the tilting frame 94 brings the outlet clamping roller 88 close to the entrance of the cassette 18, so that the cassette 18
Even if the opening pin 24 for opening the lid plate 18B is located in front of the cassette 18, the holding means 1
6, the sheet film F can be reliably loaded into the cassette 18.

When the sheet film F loaded in the cassette 18 passes through the holding means 16, its front and back sides are reversed, so that the sheet film F loaded in the cassette 18 is reversed from the state stored in the magazine 12. That is, since it is necessary to load the sheet film F into the cassette 18 with the emulsion side facing the lid plate 18B, if the film has an emulsion side on only one side, it is necessary to load the sheet film F into the cassette 18 with the emulsion side facing downward in the magazine 12. It will be accommodated. Therefore, by suctioning the opposite side of the emulsion, the suction cup 136 of the taking-out means 14 can eliminate the influence of suction force on photographic performance even with sensitive films.

Note that even when the tilting frame 94 rotates counterclockwise in FIG. In order to prevent unnecessary tension from being applied to the sheet film F when it is held between the holding rollers 84 and 86, the entrance holding roller 82 and the intermediate holding rollers '84 and 86 are used.
It is preferable to interpose a one-way clutch 156 between the timing belt 116 and the winding pulley of the timing belt 116 to allow the belt to rotate freely when high-speed rotation is transmitted in the sheet film transport direction.

When the loading of the sheet film F into the cassette 18 is completed, the pulse motor 106 is driven in step 256, and the tilting frame 94 is returned to the vertical position. Finally, in step 258, the cassette drive mechanism is activated, and the cassette 18 is ejected from the loading port 10A of the sheet film loading device 10, thereby completing sheet film loading.

Therefore, the next cassette 18 is the sheet film loading device 1.
0, if the sheet film F to be loaded into this cassette 18 is the most frequently used film, the ejecting means 14 and the holding means 16 will immediately remove it from the topmost magazine 12 without moving up and down. The sheet film F can be taken out, allowing quick loading work.

〔Effect of the invention〕

Since the present invention has the above-mentioned configuration, it has an excellent effect that, when the frequency of use of sheet films differs, the frequently used film can be taken out quickly.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing a sheet film loading device to which the present invention is applied, Fig. 2 is an exploded perspective view showing the main parts of this embodiment, and Fig. 3 is a cassette and its lid opening mechanism. FIG. 4 is a block diagram showing the control device and its connection relationship, and FIGS. 5 (A) and (B) are flowcharts showing the control routine of the control device. be. F...Sheet film, 10...Sheet film loading device, 12...Magazine, 14...Ejecting means, 18...Cassette, 54...Motor, 129...Motor, 130...・Control means, 13 keyboard.

Claims (2)

[Claims] (1) A sheet film loading method in which a plurality of magazines each containing sheet films and a take-out means selectively correspond to each other to take out sheet films and load the sheet films into a cassette within a predetermined period of time. A sheet film loading method characterized by associating a magazine containing a film that is most frequently taken out with an unloading means to prepare for film unloading. (2) A sheet film loading method in which a plurality of magazines each containing sheet films and a take-out means selectively correspond to each other to take out sheet films and load the sheet films into a cassette, in which the previous sheet A sheet film loading method characterized by associating a magazine from which a film has been taken out with an unloading means to prepare for the next film unloading.