JPH02126255A - Film carrying device - Google Patents

Abstract

PURPOSE:To apply the title device to any leader, etc., whatever mirror constitution it has by providing a means for switching the rotating direction of a reel at the time of rewinding a film. CONSTITUTION:When a change-over switch 2 is switched according to the number of the mirrors of the leader in the case of a rewinding action, a normal rotation signal or a reverse rotation signal is transmitted to a control circuit 3 from the change-over switch 2 according to the switching direction and a motor M1 is driven in a direction in accordance with the signal from the change-over switch 2. In such a case, the rotating direction of a supply shaft 1 is an A direction when the microfilm F passes a film path P1 and a B direction when it passes a film path P2. With such a constitution, the film F is rewound without hindrance even if a supply reel 5 is loaded from either direction of a surface and a back surface.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a film transport device for transporting a roll of film, and particularly to one applicable to microfilm readers and the like having different mirror configurations.

(Prior Art) Conventionally, microfilm readers, reader printers, etc. have used a plurality of mirrors to bend the image light to create a projection optical path due to restrictions such as the layout of optical members and the size of the device. We are planning to form a In this case, this type of equipment includes one with four mirrors ml"m4, that is, an even number of mirrors (leader P) as shown in FIG. 12(a), and one with an even number of mirrors (leader P) as shown in FIG. 12(b). It is known that a device (reader Q) is equipped with three mirrors ml to m3, that is, an odd number of mirrors.In these devices, the film FO loaded in the film transport device !100 is After illuminating with L and projecting the light image onto the screen 101 to search for a desired frame image, the reel 102 is rotated by a motor to rewind the film Fo. 100
It is configured to be detachable from a reader, etc., and can be applied to various devices.

(Problem to be Solved by the Invention) By the way, in the case of such a conventional example, since a configuration is adopted in which a mirror is used to guide the optical image of the film FO to the screen 101, the illumination position can be adjusted depending on whether the number of mirrors is even or odd. The optical positional relationship between the image on the film FO and the image on the screen 101 is reversed. For this reason, the reader P (FIG. 12(a)) equipped with the four mirrors m1 to m4t- and the leader Q (first
In Figure 2(b)), in order to obtain a normal image at each screen l0IP, Q, the film F is turned upside down.
It is necessary to load o.

In this case, to turn over the film FO at the illumination position a, it is only necessary to turn over the reel 102 on which the film Fo is wound and load it onto the supply shaft. Therefore, it is applicable to the reader P equipped with an even number of mirrors. If the reel 102 is turned over and loaded in the film transport device 100, as shown in FIG. 12(b).
As shown in the figure, even in the reader Q equipped with an odd number of mirrors, it is possible to obtain a normal image on the screen 101Q.

However, such a film transport device io.

In this case, the reel 102 can only be rotated clockwise when rewinding the film F, so if the reel 102 is loaded upside down as shown in FIG. The film cannot be rotated counterclockwise, and as a result, the film FO cannot be rewound. Therefore, the above film transport device lOO cannot be applied to a reader etc. equipped with an odd number of mirrors. On the other hand, when the rewinding direction of the film Fo is set to the opposite direction, there is a problem that it cannot be applied to a reader or the like having an even number of mirrors.

Therefore, the present invention has been made to solve the problems of the prior art described above, and its purpose is to apply it to readers etc. having any mirror configuration, regardless of whether the number of sheets is even or odd. The purpose of the present invention is to provide a film conveying device that is possible.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a roll-shaped film wound around a detachable reel is fed, and the reel is rotated to A film transport device for rewinding a film onto a reel is characterized in that means is provided for switching the direction of rotation of the reel when rewinding the film.

(Function) In the present invention having the above configuration, when rewinding the film onto the reel, the reel can be rotated either clockwise or counterclockwise. Therefore, regardless of whether the reel is loaded from the front or the back, the film can be rewound without any problem.

(Example) The present invention will be explained below based on illustrated embodiments.

Figures 1 to 6 show the first part of the film conveying device according to the present invention.
An embodiment is shown in which FIG. 1 is a schematic configuration diagram and FIG. 2 is an external appearance.

In the figure, reference numeral 1 denotes a supply shaft, which is connected to a supply motor M1 and is rotatable in the direction of arrow A or B. The direction of rotation of the supply motor M1 is changed by operating a changeover switch 2 provided in the apparatus main body 16 and connected to the control circuit 3. In addition, the control circuit 3
A controller 4 is connected to the controller 4, which issues commands such as film feeding, winding and rewinding.

-F The supply shaft 1 can be loaded with a supply reel 5 wound with a roll of microim (hereinafter referred to as film) F, and this reel 5 rotates in the direction of arrow A or B together with the supply shaft l. It is supposed to be done. This supply reel 5 can be loaded onto the supply shaft 1 either from the front side or from the back side.

A conveying path 6 for conveying the film F is formed on the right side of the supply shaft 1 in the figure, and the film is guided to a winding wheel 7 on the right side in the figure via this conveying path 6. This conveyance path 6 is formed from a primary member. That is, 8a is a loading roller for guiding the leading edge of the film F into the transport path 6, and is connected to a driving means (not shown). A guide roller 8b is brought into contact with the loading roller 8a from below. On the right side of the guide roller 8, a pair of film guides 9a and 9b, film pressure plate glasses 10a and lOb, and film guides lla and llb are provided in this order. Further, a guide roller 12 is provided near the film guide 11a.
It is arranged.

The take-up reel 7 is connected to a take-up motor M2, and the motor M2 is further connected to the control circuit 3. The take-up reel 7 is rotatable in the direction of arrow C or in the opposite direction based on a signal from the controller 4. still,
13 is a guide arm for guiding the film F to the core 7a of the take-up reel 7, and a rotatable guide roller 1 is attached to the tip of the guide arm.
4, the proximal end is rotatably supported, and the guide roller 14 is pressed against the core 7a of the winding roll 7 by a spring 15.

FIG. 3 shows a case where the film transport device FC of this embodiment is applied to a microfilm reader. That is, the film transport device FC is configured to be detachably assembled on the front surface of the microfilm reader MH and below the screen S. The film F is illuminated from below by a lamp (not shown), and the light image is enlarged and projected onto the screen S.

FIG. 4 shows an enlarged view of the vicinity of the supply reel 5. As described above, the supply reel 5 can be loaded onto the supply shaft 1 from either the front side or the back side. Therefore, between the supply reel 5 and the loading roller 8a,
A film path P1 is formed when the film F is pulled out counterclockwise, and a film path P2 is formed when the film F is pulled out clockwise. Therefore, in this embodiment, no protrusions or other members are provided in the vicinity of the film paths PI and P2 so as not to obstruct the running of the film F.

The changeover switch 2 is disposed near the supply reel 5, and the switch 2 is turned in the direction of the silhouette (a or b direction) showing the direction in which the film F is pulled out as shown in FIG. The direction of rotation of the supply @1 during rewinding and rewinding is switched.

As shown in FIG. 4, a support member 17 is provided near the guide roller 8 to support the film F when the film F is loaded.

In the above 4I configuration, when transporting the film F, the following operation is performed.

First, by operating the changeover switch 2, the film F
In this case, for example, in a device that projects an image onto a screen via an even number of mirrors, the setting direction of the reel 5 is selected, that is, the setting direction of the reel 5 is selected, and the reel 5 is loaded accordingly. As shown in the figure, the reel is set so that the film F is pulled out in a counterclockwise direction, and the light from the lamp is irradiated onto the back side of the film F (the side where the image is upside down). Then, when the leading end of the film F is sandwiched between the loading roller 8a and the guide roller 8b in order to load the film F, the loading roller 8a
rotates and the film F is conveyed toward the take-up reel 7. When the tip of the film F reaches the core 7a of the take-up reel 7 along the guide arm 13, the first take-up reel 7
is rotating in the direction of arrow C, and the leading edge of film F is.

It is pressed against the core 7a by the guide rollers 14 of the guide arm 13 and wound around the core 7a. Thereafter, the supply reel 5 and take-up reel 7 are driven, and the lamp is turned on to project frame images of the film F onto the screen S.
Information retrieval, printing, etc. are performed, and when the predetermined operations are completed, the supply reel 5 is rotated to rewind the film F.

FIG. 7 is a flowchart showing the rewinding operation. As shown in the figure, when the changeover switch 2 is switched to a or b depending on the number of mirrors of the reader (step ■),
The changeover switch 2 generates a forward rotation signal or a reverse rotation signal depending on the switching direction (steps ①, ①), and each signal is sent to the control circuit 3. Here, when the operator operates the controller 4 to issue a rewind command (step ■)
, motor M! is driven in the direction according to the signal from the changeover switch 2 (step 2), and after the rewinding is completed (step 2), the drive of the motor M+ is stopped.

In this case, the rotation direction of the supply shaft l is in the direction of arrow A when the film F is passing through the film bus P1 (as shown in Figure 1), and in the direction of the arrow B when it is passing through the film path P2. be. Furthermore, the rewind operation described above is as follows.

This is not only performed after an operation such as an information search, but also during a search.

Regarding the loading direction of the supply reel 5, when applied to an apparatus having an odd number of mirrors, the side of the film F on which an inverted image appears faces the direction of the screen S, contrary to the case with an even number of mirrors. It is only necessary to load the supply reel 5, and further, when rewinding, the same operation may be performed based on FIG. 7.

As explained above, according to the unimplemented example, the supply reel 5
Since film F can be rewound regardless of whether it is pulled out clockwise or counterclockwise, it can be easily rewound in any reader or reader printer with any mirror configuration (number of sheets). It is possible to obtain a normal image on the screen. Furthermore, as a result, it is possible to easily obtain a normal image even when using a film or the like that is wound in the opposite direction in order to fit a device having a different number of mirrors.

8 to 11 show a second embodiment of the present invention,
The loading direction of the film F can be automatically detected. The same parts as in the previous embodiment are given the same reference numerals, and in this embodiment, the supply motor M
By providing a semicircular blade 30 on the supply shaft 1 driven by the supply shaft 1 through gears 33 and 34, and detecting this blade 30 by changing the position with two photosensors 31 and 32,
We are planning to form a phase difference encoder.

These photosensors 31 and 32 are connected to the control circuit 3 as shown in FIG. It is intended to be driven.

In this embodiment, when rewinding the film F,
Instead of the manual switching operation (step 2 in FIG. 7) of the embodiment described above, the automatic switching operation is performed in the following procedure.

Figures 10 and 11 show the outputs of the 7 otosensors 31 and 32 when the supply reel 5 is loaded so that the film F is pulled out counterclockwise or clockwise.
A signal of L indicates that the blade 30 is detected by the sensor 31, 32, and a signal of L indicates that it is not detected.

By comparing these signals as described below, the rotational direction of the supply shaft I is detected, so the loading direction of the film F can be determined.

For example, if the supply reel 5 is loaded to draw the film F counterclockwise.

The film F is wound up by the loading roller 7.
The supply shaft 1 rotates in the direction of arrow B while being conveyed to . In this case, when the blade 30 starts to be detected by the photosensor 32, the blade 30 is always detected by the photosensor 31, so as shown in FIG. 1O, when the output of the photosensor 32 starts to rise, the output of the photosensor 31 should be rHJ (see ■ in Figure 10). On the other hand, if the supply reel 5 is loaded so as to pull out the film F clockwise and the supply shaft 1 is rotating in the direction of arrow A, then As shown in Figure 11, the photosensor 32
The output of the photosensor 31 should be "L" when the output of It becomes possible to judge the loading direction, and furthermore,
If the motor M1 is driven to rotate in a predetermined direction when rewinding the film F to the supply reel 5 based on this judgment result,
The film F wound in either direction can be rewound. That is, according to this embodiment, the switching operation for film rewinding can be omitted, and work efficiency can be improved.

Note that the setting of the output of each sensor and the method of determining the rotational direction of the supply shaft 1 are not limited to the above methods, but according to this embodiment, the loading direction of the film F can be determined very easily. Can be done. The other configurations and functions are the same as those of the previous embodiment, so their explanation will be omitted.

(Effects of the Invention) In the present invention having the above-described configuration and operation, since a means for switching the rotation direction of the reel when rewinding the film is provided, the film can be rotated even when the reel is loaded from either the front or the back. Rewinding can be performed without any problem, and as a result, it can be applied arbitrarily to a reader etc. having any mirror configuration (number of sheets), regardless of whether the number of sheets is even or odd, and a normal image can be obtained on the screen. becomes possible.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram showing a first embodiment of a film conveying device according to the present invention, Fig. 2 is a perspective view showing the external appearance of the same embodiment, and Fig. 3 is a microfilm reader to which the same embodiment is applied. Fig. 4 is an enlarged perspective view showing the film feeding section of the same embodiment, Fig. 5 is an enlarged perspective view showing the vicinity of the changeover switch of the same embodiment, and Fig. 6 shows the film pulled out from the reel. FIG. 7 is a flowchart showing the procedure of the rewinding operation of the second embodiment of the present invention, and FIG. 8 is an enlarged perspective view showing the detection portion of the rotation direction of the supply shaft, which is the main part of the second embodiment of the present invention. 9 is a blow diagram showing the main control section of the same embodiment, FIG. 1O and FIG. (a). (b) is an explanatory diagram showing the relationship between the image on the film and the image on the screen in readers with different numbers of mirrors. Explanation of symbols ■... Supply shaft 2... Selector switch 5...
・Supply reel (reel) 6...Transport 'N1 7...Take-up reel 8...
・Loading roller F...Micro film (film) M,, M2 ・
・・Motor Figure 3 League 2P 4-character mirror (Isumi Kazufufu mirror) Figure 12 (b) 3-piece mirror (Kiminega-sho mirror)

Claims (2)

[Claims] (1) In a film transport device that feeds a roll of film wound around a detachable reel and rewinds the film onto the reel by rotating the reel, the reel when rewinding the film 1. A film conveying device comprising means for switching the rotation direction of the film. (2) A claim characterized in that a detection means for detecting the rotational direction of the reel during film feeding is provided, and the rotational direction of the reel during film rewinding is switched based on a signal obtained by the detection means. 1. The film transport device according to 1.