JP2684670B2 - Roll film tip feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an improvement of a roll film leading end feeding device for feeding the leading end of a roll film wound in a cartridge and stored in a micro film reader or the like to the leader. Regarding

<Prior Art> It is known that when the tip of a roll film of this type is fed to a film leader, for example, static electricity is generated between the tip of the roll film and the inner surface of the storage cartridge to cause feeding failure. Was there.

As a means for solving this problem, there has been a conventional method, 61-
A roll film cartridge disclosed in Japanese Patent Publication No. 135 is known.

As shown in FIG. 8 and FIG. 9, this cartridge 2 rotatably accommodates a reel 8 around which a roll film is wound, and feeds and rewinds the roll film from its outlet 4A. Is to do. The cartridge 2 has a guide member 2A for the reel 8 on the inner peripheral side.
As shown in FIG. 9, 2A is supported by the support portion 2B in a V-shaped cross section.

Here, a static elimination brush 6 having a predetermined length is provided so as to project on the inner peripheral surface of the guide member 2A.

The destaticizing brush 6 comes into contact with the outer peripheral surface of the roll film wound on the reel 8 to remove static electricity charged on the film.

However, in such a conventional roll film cartridge, there is also a drawback in that a static elimination brush must be attached to each cartridge, and the cartridge itself has to be extremely expensive. .

Further, in view of the above problems, the applicant of the present patent application
In a patent application dated January 19, 1987, a roll film leading edge feeding device has already been proposed.

This device is, as shown in FIG. 10, a leading end feeding device for a roll film 75 that feeds the leading end of a long film 75 wound in a roll on a reel 73 in a cartridge 71 to the outside. A reel drive mechanism for rotating the reel 73 in two directions, that is, the direction in which the film 75 is wound and the direction in which the film 75 is fed, a winding roller 77 that makes rolling contact with the film 75 wound on the reel 73, A peeling roller 79 that rolls into contact with the film 75 and guides its tip to be peeled off from the reel 73, and a winding roller 77 and a peeling roller 79 of which contact the film 75.
And a swinging mechanism for separating them.

Reference numeral 81 is a swinging fulcrum of an arm (which constitutes a part of a swinging mechanism) that integrally supports these rollers 77 and 79, and 83 is rotationally driving both rollers 77 and 79 via a belt 85. It is a drive roller.

The swinging mechanism causes the winding roller 77 and the peeling roller 79 to move from the opening 72 of the cartridge 71 to the film.
A film which is pressed against the outer surface of 75 at the same time and a winding roller 77 winds the film 75 around the reel 73 at the downstream side in the film feeding direction, while a peeling roller 79 winds the leading end of the film 75 around the reel 73 at the upstream side. It has been peeled from the outer surface of 75.

<Problems to be Solved by the Invention> However, even with such a roll film leading-edge feeding device according to the prior application, the following problems could not be resolved.

That is, as shown in FIG. 11, when the roll film 75 is thin and the winding diameter is small, the shape of the tip of the film located downstream of the peeling roller 79 in the film feeding direction is straight (see FIG. In the middle X), when the reel 73 rotates in the delivery direction, a loop is formed in the traveling path between the inner surface of the cartridge 71 and the inner surface of the cartridge 71 as indicated by Y and Z in the figure, and as a result, the delivery of the leading end of the film 75 is defective. Had occurred.

Further, as shown in FIG. 12, when the tip of the film 75 advances along the inner surface of the cartridge 71, static electricity is generated due to contact between the surfaces, and this static electricity reduces the feed speed of the tip of the film 75, resulting in In particular, a loop like the broken line shown in the figure occurs and a feed failure occurs.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a low-priced roll film leading-edge feeding device capable of easily preventing a roll film feeding defect due to static electricity.

<Means for Solving the Problems> The present invention for achieving this object is formed so that a reel around which a film is wound is rotatably supported and the tip of the film can be sent out through an opening. In a roll film tip feeding device provided with a cartridge, the tip of the film is peeled from the outer surface of the film wound on the reel, and is run along the reel outer periphery, and a peeling means that is fed to the outside from the opening, A non-contact with the outer diameter of the film, an arc-shaped film guide member provided in the running path of the film tip for guiding the film tip peeled by the peeling means, and the outer diameter of the film is predetermined. A film outer diameter detecting means for detecting that the outer diameter of the film has reached a value or less, and the outer diameter of the film has reached a predetermined value or less by the film outer diameter detecting means. When it is detected that the film guide member, within the range of non-contact with the outer diameter of the film, control means for moving the film guide member toward the center of the diameter of the film to approach the film, It is a tip feeding device.

The invention of the present application is the roll film leading-out device, wherein the guide member is conductive.

Also, the present invention detects the film outer diameter according to the position of the peeling means when the tip of the film is sent to the outside from the opening by the peeling means, and the guide member according to the film outer diameter. Is a device for feeding the front end of a roll film, which is characterized by controlling the position of

<Operation> In the roll film leading-edge feeding device according to the present invention, the reel around which the film is wound is rotatably supported in the cartridge, and the leading end of the film is externally passed through the opening of the cartridge. It is formed so that it can be sent out to.

Then, in the case where the feeding device feeds the leading end of the film from the cartridge, the peeling means peels the leading end of the film from the outer surface of the film wound on the reel, and the peeled film along the outer circumference of the reel. Of the cartridge is run, and the tip is sent out of the cartridge through the opening of the cartridge.

At this time, if the winding diameter of the film becomes smaller, the leading end of the film may bend in the internal traveling path of the cartridge to form a loop. Therefore, when the outer diameter of the film reaches a predetermined value or less, the film guide member is moved toward the center of the film diameter within the range of non-contact with the outer diameter of the film.

By making the guide member conductive, even if the film comes into contact with the guide member, a frictional force due to static electricity is not generated, but rather, a frictional force due to static electricity can be removed. It is possible to make the tip run smoothly.

<Examples> Examples of the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 is a front view showing a cartridge and a peeling means, which are main parts of a roll film leading edge feeding device according to a first embodiment of the present invention. FIG. 2 is a schematic front view showing the positional relationship between the cartridge and the peeling means according to the first embodiment. FIG. 3 is a schematic front view showing the relationship between the film guide member (leaf spring) and the drive mechanism thereof according to the first embodiment. FIG. 4 is a schematic configuration diagram showing a roll film carrier. FIG. 5 is a perspective view showing a part of the cartridge of the leading edge feeding device for the roll film according to the first embodiment. 6 and 7 are schematic front views showing the operation of the film guide member according to the first embodiment.

First, a reader printer using a roll-shaped microfilm is equipped with a roll film feeding device (roll film carrier) as shown in FIG.

That is, between the reel 3 around which the microfilm 1 is wound and the film winding reel 5, a feed driving roller 7 and its auxiliary roller 9 which are rotationally driven only at the time of feeding the film, a pair of feeding side film guides 11, An encoder roller 13 and its auxiliary roller 15, a pair of upper and lower pressure bonding glasses 17 and 19, a guide roller 21, and a pair of winding side film guides 23 are arranged.

Drive shaft 2 connected to each of these reels 3 and 5
The motors 5 and 27 are appropriately rotated in the forward and reverse directions by a motor (not shown) to wind and rewind the film 1 between the reels, and the film 1 is fed between the pressure-bonded glasses 17 and 19.

Then, the image information recorded on the microfilm 1 is enlarged on the screen 37 via the projection lens 35 by the light flux from the lamp 33 guided to the pressure-bonded glass 17, 19 through the mirror 29 and the condenser lens group 31. Projected.

The reel 3 on which the microfilm 1 is usually wound is detachable from the drive shaft 25 and is housed in the cartridge case 39, which is convenient for handling and exchanging with another roll film cartridge.

The mechanism for feeding the leading end of the roll film 1 between the feed drive roller 7 and the auxiliary roller 9 of the roll film carrier is a roll wound around the reel 3 from the cartridge 39 which is positioned and fixed with respect to the carrier as described later. The film 1 is sent out.

This feeding mechanism, that is, the tip of the film 1 is peeled from the outer surface of the film 1 wound on the reel 3, and the tip of the peeled film 1 is fed to the outside from an opening 45 formed in one side of the cartridge 39. Means 47
As shown in detail in FIG. 1, it comprises a V-shaped arm 48, a peeling roller 49, a winding roller 51 and the like.

Specifically, one end of the arm 48 is rotatably supported by a fulcrum pin 53, and the other end is swingable so that the other end can approach and separate toward the reel 3 via the opening 45 around the pin 53. It is provided. The peeling roller 49 and the winding roller 51 are rotatably attached to the other end of the arm 48, and the peeling roller 49 feeds the film 1 in the feeding direction (first
In the state of being positioned on the upstream side in the direction of the arrow W in the drawings, and in the state of the winding roller 51 being positioned on the downstream side, they are arranged so that they can be pressed against the outer surface of the film 1.

That is, the arm 48 is swung in the direction approaching the reel 3 at the time of delivery by a solenoid (not shown) or the like. Then, as shown in FIG. 2, when the solenoid is turned off, the arm 48 is returned to the initial position (the position where the roller 49 is separated from the reel 3 in FIG. 1) by the biasing of the spring (not shown).

The peeling roller 49 and the winding-up roller 51 are rotatably driven in both forward and reverse directions by the feed drive roller 7 in synchronization. That is, as shown in FIG. 2, the peeling roller 49 and the tightening roller 51 are rotationally driven in opposite directions via the intermediate rollers 55 and 57 and the belts 59 and 61.

Further, the peeling roller 49 is formed of, for example, hard rubber, and has a saw-toothed outer shape in which a predetermined groove is formed on the outer surface thereof, as shown in the outer shape in FIGS. 1 and 2. .

Further, the drive shaft 25 is driven and rotated in both forward and reverse directions by a pulse motor through, for example, a reduction gear mechanism, and together with these motors, gears, etc., reel drive means is provided.
Make up 30.

Here, as shown in FIG. 5, a predetermined cutout (space) 43 is formed in the lower end portion of the cartridge 39, and a positioning mechanism (member) is inserted into this cutout 43. The cartridge 39 is positioned and fixed to the carrier.

As shown in FIG. 3, a leaf spring 103 made of metal, for example, is provided in the notch 43 via an L-shaped mounting plate 101.

Therefore, the leaf spring 103 also acts as an erroneous insertion preventing member for the cartridge 39.
103 is curved in an arc shape with a predetermined curvature so as to be convex downward in the figure. The arcuate surface of the leaf spring 103 is the reel 3
And constitutes a part of the arc-shaped inner surface of the cartridge 39 which faces the outer surface (on which the film 1 is wound).

The leaf spring 103 is made of a conductive metal and is grounded. That is, the leaf spring 103 as the positioning member is arranged at a position corresponding to the notch 43 which is a portion for loading the cartridge 39 into the carrier.

Here, as shown in FIG. 1 again, a cam 105 is fixed to one end of the arm 48, and the convex portion 107 turns on the switch 109 by the rotation of the arm 48.

FIG. 3 shows a solenoid mechanism that operates depending on whether the switch 109 is turned on or off. That is, one end of the swingable lever 1 is in contact with the free end of the leaf spring 103 from below.
11 and the fulcrum 113 of the lever 111, the lever 111
Electromagnetic plunger connected to the other end of the link via link 115 1
This mechanism is composed of 17 and.

Therefore, the leaf spring 103 thus curved is formed between the film 1 and the outer peripheral surface of the reel 3 inside the cartridge 39.
It will be located on the road. Therefore, the leaf spring 103 is provided in the traveling path at the tip of the film 1 so that when the winding diameter of the film 1 is small, the film 1
And a film guide member that can approach the outer peripheral surface of the.

As shown in FIGS. 6 and 7, the fixed end portion of the leaf spring 103 slightly projects radially inward with respect to the inner wall of the cartridge 39. This is a cutout at the end of film 1.
The edge 121, which is the end portion of 43, is not caught. 6 shows a case where the winding diameter of the film 1 is large, the solenoid mechanism is in the non-operating state, and the leaf spring 10
The tip of 3 is located in the notch 43 of the cartridge 39. Further, FIG. 7 shows a state in which the solenoid mechanism is operating.

In the roll film leading-edge feeding apparatus having the above-described configuration, first, the cartridge 39 is set in the roll film carrier. That is, the plate spring 103 is inserted into the notch 43 of the cartridge 39, so that the cartridge 39 is set at a predetermined position and state.

Next, the drive shaft 25 is set so that the reel 3 can rotate.

Then, the reel motor is rotated and driven in the film winding direction in the counterclockwise direction (the direction opposite to W) in FIG. 1 by the pulse motor constituting the reel driving means 30. This is a preparation for eliminating the slack of the film 1 on the reel 3 and reliably feeding the leading end of the film 1.

Next, the reel driving means 30 shifts from high speed winding to low speed winding. At this time, a solenoid (not shown) is driven to swing the arm 48 counterclockwise in FIG. 1 around the fulcrum 53, so that the winding roller 51 and the peeling roller 49 are placed on the outer surface of the film 1. Press it. this is,
The film 1 wound to some extent by high-speed winding is wound around the reel 3 more strongly.

Here, the reel drive means 30 rotates the reel 3 in the opposite direction, that is, in the direction of the arrow W. At the same time, the feed drive roller 7 is rotated in the clockwise direction in FIG. 1 by a loading motor (not shown). As a result, the peeling roller 49 is driven in the clockwise direction and the winding roller 51 is driven in the counterclockwise direction via the belts 61 and 59 and the rollers 57 and 55, respectively.

Therefore, the film 1 travels on the traveling path between the reel 3 and the reel 3 while being wound on the downstream side by the winding roller 51, and is peeled from the outer surface of the film 1 by the peeling roller 49 on the upstream side from the opening 45. It is sent out.

That is, the winding roller 51 rotates counterclockwise at a speed higher than the rotation speed of the reel 3 to wind the film 1 around the reel 3, and the peeling roller 49 rotates clockwise to press the film 1 against the film 1. It is separated from the outer surface on the upstream side.

At this time, even if the film 1 is thin, its stiffness is weak (the rigidity in the length direction is small), the winding diameter around the reel 3 is small, and the tip of the film 1 has a straight shape. When the peeling roller 49 moves from the state shown in FIG. 7 to the state shown in FIG. 7, the convex portion 107 of the cam 105 turns on the switch 109 via the arm 48. As a result, as indicated by the broken line in FIG. 3, the electromagnetic plunger 117 is turned on to swing the lever 111 through the link 115 in the clockwise direction in the figure by a predetermined angle. Therefore, the tip end of the leaf spring 103 is lifted up, and the tip end of the film 1 is prevented from bending in the traveling path to form a loop. Further, at this time, since the leaf spring 103 is formed of a conductive material and grounded via the mounting plate 101, even if the film 1 contacts the leaf spring 103, no frictional force due to static electricity is generated. . Rather, static electricity is removed from the film 1. Furthermore, the inner surface of the concave curve of the leaf spring 103 is finished so that the coefficient of friction is as small as possible, and the running of the leading end of the film 1 is smoothed even when the contact is made.

Thus, when the leaf spring 103, which is the film guide member, comes into contact with the tip of the film 1, static electricity can be removed even if static electricity is generated, and the tip of the film 1 is smoothly guided in the traveling path. It is sent out through the opening 45. This is effective in preventing the occurrence of jams due to static electricity, which often occurs at low temperatures and low humidity.

This is because even if the film 1 has a small winding diameter and its thickness is thin (about 2.5 mil: 1 mil = 1/1000 inch).
And even if the tip of film 1 is straight,
This means that the leading edge of the film 1 is smoothly guided and sent out.

When the leading end of the film 1 reaches the encoder roller 13 and is rotated, the drive solenoid of the arm 48 and the electromagnetic plunger 117 are turned off synchronously. As a result, the arm
48 returns to the initial position. At the same time, the leaf spring 103 is returned to the position shown in FIG. 6 by its own elastic energy.

Further, as shown in FIG. 3, in the embodiment of the present invention, the tip of the leaf spring 103 is located corresponding to the case where the winding diameter of the film 1 is 60 mm. The switch 109 is set to be turned on when the winding diameter is, for example, 55 mm. This is important for ensuring that the leaf spring 103 does not contact the outer periphery of the film 1 when the arm 48 is swung. However, leaf spring
It is needless to say that any value may be set without being limited to the above-mentioned numerical value setting as long as the setting is such that 103 does not contact the outer periphery of the film 1.

Further, in addition to the above embodiments, the present invention may be arranged such that the leaf spring is continuously moved in the direction of the rotation center of the reel in the traveling path in association with the swing amount of the arm. Further, a projecting member different from the leaf spring may be gradually brought closer to the outer peripheral surface of the film corresponding to the winding diameter of the film.

<Effect> As described above, according to the present invention, even if the outer diameter of the film is equal to or less than a predetermined value, the distance between the film guide member and the outer diameter of the film is maintained in an appropriate range, and the Thus, it is possible to prevent a loop from being formed at the tip of the peeled film.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a cartridge and a peeling means, which are the main parts of a roll film leading edge feeding device according to a first embodiment of the present invention, and FIG. 2 is a roll film leading edge feeding according to the first embodiment. FIG. 4 is a schematic front view showing the positional relationship between the cartridge of the apparatus and the peeling means, and FIG. 3 is a schematic front view showing the relationship between the film guide member (leaf spring) according to the first embodiment and its drive mechanism. FIG. 5 is a schematic configuration view showing a roll film carrier, FIG. 5 is an exploded perspective view showing a cartridge and a positioning member of a roll film leading-edge feeding device according to a first embodiment, and FIG. 6 is a first embodiment. FIG. 7 is a schematic front view showing the operation of the film guide member when the winding diameter of the film is large, and FIG. 7 is a film guide when the winding diameter of the film is small according to the first embodiment. Its schematic front view illustrating the operation of the member. FIG. 8 is a front view showing a conventional raw film cartridge, and FIG. 9 is a sectional view taken along the line IX-IX in FIG. FIG. 10 is a schematic front view showing a main part of a roll film leading-edge feeding device according to the prior application, FIG. 11 is a schematic front view showing a misfeed state in the prior application device, and a twelfth embodiment.
Similarly, the figure is a schematic front view showing a misfeed state in the prior application device. 1 ... Film, 3 ... Reel, 39 ... Cartridge,
45 …… Aperture, 47 …… Peeling means 103 …… Leaf spring (film guide member).

Claims (1)

(57) [Claims] 1. A roll film leading edge feeding device comprising a cartridge in which a reel around which a film is wound is rotatably supported and which is formed so that the leading edge of the film can be fed out through an opening. The tip is peeled off from the outer surface of the film wound on the reel, and is run along the outer circumference of the reel, and the peeling means that sends it out from the opening is not in contact with the outer diameter of the film. An arc-shaped film guide member provided in the traveling path of the film tip for guiding the peeled film tip, and a film outer diameter detection means for detecting that the outer diameter of the film has reached a predetermined value or less. When the film outer diameter detecting means detects that the outer diameter of the film has reached a predetermined value or less, the film guide member is moved upward. A leading-end feeding device for a roll film, comprising: a control means for moving the film in the direction of the center of the film to bring it closer to the film within a range that is not in contact with the outer diameter of the film.