JPH02165130A - Device for feeding leading edge of roll film - Google Patents

Abstract

PURPOSE:To prevent fault in feeding a roll film by moving a guiding member to a film side in accordance with the diameter of the wound film and blowing gas off in the feeding direction of the film from a blowoff port. CONSTITUTION:A peeling means 47 peels the film 1 whose leading edge is wound around a reel from an outer surface and feeds the leading edge of peeled film 1 from an opening part 45 formed on one side of a cartridge 39 to the outside. A metallic leaf spring 103 functioning as the guiding member is engaged in the lower end part of the cartridge 39 through an L-shaped mounting plate 101. The gas blowoff port 201 is formed on a part of the leaf spring 103 and a compressed air supply source 203 is connected to the port 201 through a tube 202. When the diameter of the wound film is small, the film guiding member approaches to the outer peripheral surface of the film to guide in its traveling path and blows the gas off in the feeding direction of the film, so that the leading edge of the film is prevented from bending and forming a loop.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a device for sending out the leading end of a roll film wound and stored in a cartridge in a microfilm reader, etc., to the leader. Regarding improvements.

<Prior Art> It is known that when feeding the leading edge of this type of roll film to a film leader, static electricity may be generated between the leading edge of the roll film and the inner surface of the storage cartridge, resulting in poor feeding. was.

As a solution to this problem, conventional
A roll film cartridge disclosed in Japanese Patent No. 135 is known.

As shown in FIG. 9 and FIG. 1O, this cartridge 2 has a guide member 2A for the reel 8 on the inner peripheral side, and this guide member 2A has a cross-sectional shape of It is supported by the support part 2B.

Here, a static elimination brush 6 of a predetermined length is disposed to protrude from the inner peripheral surfaces of the two guide members.

The static eliminating 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, such conventional roll film cartridges have the disadvantage that a static elimination brush must be attached to each cartridge, making the cartridge itself extremely expensive. .

Furthermore, in view of the above-mentioned problems, the applicant of the present patent disclosed a roll film leading end feeding device in the summer in Japanese Patent Application Laid-Open No. 178220/1983.

This device includes a cartridge 71 as shown in FIG.
This is a roll film 75 tip feeding device that feeds out the tip of a film 75 wound on a reel 73 to the outside. a reel drive mechanism that rotates the reel 73 in the direction; a tightening roller 77 that rolls into contact with the film 75 wound on the reel 73; A peeling roller 79 that guides the seams, a tightening roller 77, and a peeling roller 79
a swinging mechanism that brings the film into contact with and away from the film 75;
It had

The fulcrum 81 is the swing fulcrum of an arm (constituting a part of the swing mechanism) that integrally supports these rollers 77, 79, and both rollers 77, 79 are moved by the driving roller 83 via the belt 85. Rotationally driven.

As a result of this slow movement mechanism, the tightening roller 77 and the peeling roller 79 are simultaneously brought into pressure contact with the outer surface of the film 75 through the opening 72 of the cartridge 71, and the tightening roller 77 presses against the outer surface of the film 75 at the downstream side in the film feeding direction. The peeling roller 79 is tightening the film 7 on the reel 73.
Wind the tip of 5 onto reel 73 on the upstream side as well! −′
, peeled off from the outer surface of the film 75.

<Problems to be Solved by the Invention> However, even with the roll film leading edge feeding device described above, the following problems could not be solved.

That is, as shown in FIG.
If the film is thin, the winding diameter is small, and the tip of the film located downstream of the peeling roller 79 in the film feeding direction is straight (X in the figure),
When the reel 73 rotates in the feeding direction, it forms a loop in the running path between it and the inner surface of the cartridge 71, as shown by Y%2 in the figure, and as a result, the film 75
The problem was that the tip of the blade was not properly fed.

Further, as shown in FIG. 13, when the leading end of the film 75 moves along the inner surface of the cartridge 7I, static electricity is generated due to contact between the surfaces, and this static electricity is transferred to the film 75.
As a result, a loop as shown by the broken line in the figure occurs, resulting in poor feeding.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a roll film leading end feeding device which is inexpensive and which easily prevents roll film feeding failures caused by static electricity I.

Means for Solving the Problems> The present invention to achieve this object consists of a roll on which a film is wound and a roll for feeding out the leading end of the film from an opening of a car heir which rotatably supports a reel. In the film leading edge feeding device, a peeling means that peels the film leading edge from the outer surface of the film wound on the reel and feeds it out from the opening is provided so as to be able to fit between the notch and the opening of the cartridge. a guide member, a film guide means for moving the guide member to the film side in accordance with the winding diameter of the film, and a gas that blows out gas in the film feeding direction from a blowing point provided on the guide member. It is characterized by comprising a blowing means.

<Function> In the device for feeding the leading edge of a roll film according to the present invention, a reel on which a film is wound is rotatably supported by a cartridge, and the film is fed through an opening of the cartridge. , is formed so that its tip can be sent out to the outside.

When the feeding device feeds out the leading edge of the film from the cartridge, the peeling means peels the leading edge of the film from the outer surface of the film wound on the reel, and also inserts the leading edge into the cartridge from the opening of the cartridge. It is sent out to the outside. At this time, as the winding diameter of the film becomes smaller, the leading end of the film may sag or bend in the internal running path of the cartridge to form a loop due to the influence of static electricity or the like. When the winding diameter of the film is small in this way, the film guide member approaches the outer circumferential surface of the film on its travel path and guides it, while also blowing out gas in the film feeding direction, causing the leading edge of the film to bend and loop. prevent the formation of the result,
This allows the leading edge of the film to be sent out smoothly.

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

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 for winding the 71 microfilm l and the film take-up reel 5, there are provided a feed drive roller 7 and its auxiliary roller 9, which are driven to rotate only when the film is fed out, and a pair of feed-out side film guides. 11. Encoder roller 13, its auxiliary roller 15, and a pair of upper and lower pressure bonding glasses 17 and 19. Guide roller 21. A pair of winding side film guides 23 are provided.

A drive shaft 25 connected to these reels 3 and 5, respectively.
．． 27 is appropriately rotated in two forward and reverse directions by a motor (not shown), the film l is wound and rewound between both reels, and the film l is fed between the pressure bonding glasses 17 and 19.

The image information recorded on the microfilm l is then magnified onto the screen 37 via the projection lens 35 by the light beam from the lamp 33 that is guided to the press-bonded glass 17.19 section via the mirror 29 and the condenser lens group 31. be projected.

Note that the reel 3 on which the microfilm 1 is normally wound
is engaged with the drive shaft 25 and the cartridge case 3
It is placed in 9th. The mechanism for feeding out the leading edge of the roll film l is for feeding the roll film 1 wound around the reel 3 from a cartridge 39 fixed to the carrier between the feeding drive roller 7 and the auxiliary roller 9, as will be described later. be.

The peeling means 47 peels off the tip of the film l from the outer surface of the film l wound on the reel 3, and sends out the peeled tip of the film l to the outside through an opening 45 formed on one side of the cartridge 39. As shown in detail in FIG. 2, it is composed of a 7-shaped arm 48, a peeling roller 49, a tightening roller 51, and the like.

Specifically, one end of the arm 48 is swingably supported by a fulcrum pin 53, and the other end is provided so as to be able to approach and separate from the reel 3 through the opening 45 with the bin 53 as the center. . The peeling roller 49 and the seaming row 251 are rotatably attached to the other end of the arm 48i, and the peeling roller 49 rotates in the direction of feeding the film l (
1, 2, and 3), and the tightening roller 51 is located downstream in the direction of the arrow W in FIGS. 1, 2, and 3. has been done.

That is, this arm 48 is swung in a direction approaching the reel 3 during feeding by a solenoid or the like (not shown). Then, as shown in FIG. 3, when the solenoid is turned OFF, the arm 48 is returned to its initial position (the position where the roller 49 is spaced from the outer periphery of the film l in FIG. 2) by the urging force of a tin ring (not shown).

The peeling roller 49 and the tightening roller 51 are synchronously driven and rotated in both forward and reverse directions by the feed drive roller 7. That is, as shown in Figure 3,
The peeling roller 49 and the wrapping roller 51 are driven to rotate in opposite directions via intermediate rollers 55, 57 and belts 59, 61.

The peeling roller 49 is made of, for example, hard rubber, and has a serrated outer surface with predetermined grooves formed on its outer surface, as shown in FIGS. 1 and 2.

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

Here, as shown in FIG. 6, a predetermined notch (space) 43 is formed at the lower end of the cartridge 39.

As shown in FIG. 1, a metal leaf spring 103 is inserted into the notch 43 via an L-shaped mounting plate 101 as a guide member.

The leaf spring 103 is curved in an arc shape with a predetermined curvature so as to be convex downward in the figure. And this leaf spring 103
is made of conductive metal and is grounded. That is, the cartridge 39 is loaded into the carrier! A leaf spring 103 serving as a guide member is inserted into a position corresponding to the notch 43, which is the loose part. Furthermore, a gas outlet 201 is formed in a part of this leaf spring 103, and a tube 20 is provided in this outlet 201.
A compressed air supply source 203 is connected via 2. These compressed air sources 203 (e.g. compressors)
, the tube 202, and the blow-off port 201 as a whole constitute a gas blow-off means 210 that blows gas between the inner circumferential surface of the cartridge 39 and the outer surface of the film l in the feeding direction of the film l (in the direction of arrow E).

Here, as shown in the second factor, a cam 105 is fixed to one end of the arm 48, and the convex portion 107 turns on the switch 109 when the arm 48 rotates.

FIG. 4 shows a solenoid mechanism that operates depending on whether this switch 109 is turned on or off. That is, a swingable lever l l 1 whose one end abuts the free end of the leaf spring 103 from below, and a fulcrum 11 of the lever iii
This mechanism is composed of an electromagnetic plunger 117 connected to the other end of the lever 111 via a link 115 with the lever 111 in between.

Therefore, the leaf spring lO3 engaged in the notch 43 is a film guide member that is provided on the travel path at the tip of the film l and can be accessed to the outer circumferential surface of the film 1 when the winding diameter of the film 1 is small. Furthermore, the gas blowing action can reliably prevent delivery failures due to static electricity. Furthermore, since the leaf spring 103 itself is made of a conductive material and is grounded, the tip of the film is +[
Even if a load is held, it is possible to eliminate a situation where the leaf spring 103 and the film come into contact with each other electrostatically.

As shown in FIGS. 7 and 8, the fixed end of the leaf spring 103 slightly protrudes radially inward with respect to the inner wall of the cartridge 39. As shown in FIGS. This is to prevent the leading end of the film l from getting caught on the edge 121, which is the end portion of the notch 43.

In FIG. 7, when the winding diameter of the film l is large (C), the solenoid mechanism is in a non-operating state and the tip of the leaf spring 103 is located within the notch 43 of the cartridge 39. Also,
FIG. 8 shows the state in which the solenoid mechanism is in operation.

In the roll film leading end feeding device having the above configuration, first, the cartridge 39 is set in the roll film carrier. Here, by inserting the cartridge 39 so that its notch 43 is aligned with the leaf spring 103, the cartridge 39 is set at a predetermined position and state.

Next, the drive shaft 25 is engaged with the reel 3.

Then, the reel 3 is rotationally driven in the film tightening direction in the counterclockwise direction (opposite direction to W) in FIG. 2 by the pulse motor constituting the reel driving means 30. This is a preparation to eliminate slack in the film L on the reel 3 and to ensure that the leading edge of the film L is fed out.

Next, the reel driving means 30 shifts from high-speed seaming to low-speed seaming. Then, the gas blowing means 210 starts blowing out gas, and at the same time, a solenoid (not shown) is driven to swing the arm 48 in the counterclockwise direction in FIG. And the peeling roller 49 is brought into pressure contact with the outer surface of the film l. This is to further tighten the film l, which has been tightened to some extent by high-speed tightening, onto the reel 3 more strongly.

Next, the reel 3 is rotated by the reel driving means 30 in the opposite direction to that described above, that is, in the direction of the arrow W. At the same time, the feed drive roller 7 is rotated clockwise in FIG. 3 by a loading motor (not shown). As a result, via belt 61159 and roller 57.55,
The peeling roller 49 is driven to rotate clockwise, and the tightening roller 51 is driven to rotate counterclockwise.

Therefore, the film l runs on the running path between the reel 3 and the reel 3 while being tightened by the tightening roller 51 on the downstream side, and is peeled off from the outer surface of the film l by the peeling roller 49 on the upstream side and exits from the opening 45. sent outside.

That is, the winding opening 51 rotates counterclockwise at a speed greater than the rotational speed of the reel 3 to wind the film l onto the reel 3, and the peeling roller 49 rotates clockwise to remove the pressed film. 1 from its outer surface on the upstream side.

At this time, the winding diameter of the film 1 on the reel 3 is small,
The peeling roller 4 changes from the state shown in FIG. 7 to the state shown in FIG.
9 moves, the convex portion 107 of the cam 105 turns on the switch 109 via the arm 48. As a result, the fourth
As shown by the broken line in the figure, the electromagnetic plunger 117 is turned on and operated to swing the lever lll clockwise in the figure by a predetermined angle via the link 115. Therefore, leaf spring 1
In 03, the tip is lifted upward, and in conjunction with the guide of the film L by blowing out gas, even if the tip of the film L is straight, it is prevented from bending in the running path and forming a loop. It is something that

Furthermore, at this time, since the leaf spring 103 is made of a conductive material and is grounded through the mounting plate 101, even if the film 1 comes into contact with the leaf spring 103, no frictional force is generated due to static electricity. . Rather, it removes static electricity from the film l. Plus, leaf springs! 0
The concave curved inner surface of No. 3 is finished to have a coefficient of friction as small as possible so that the leading edge of the film 1 can run smoothly even during contact.

In this way, when the leaf spring 103, which is a film guide member, comes into contact with the leading edge of the film l, even if static electricity is generated, it can be removed, and the leading edge of the film l is smoothly guided along the running path. It is sent out from the opening 45. This is effective in preventing jamming caused by static electricity, which often occurs at low temperatures and low humidity, and furthermore, combined with the gas blowing effect, ensures more reliable film feeding.

This means that even if the winding diameter of the film l is small and its thickness is thin (about 2.5ml/l: l++1l-1/
1000 inches), which means that even if the leading edge of the film l is straight, the leading edge of the film l will be smoothly guided and sent out to the outside.

When the encoder roller 13 is rotated by the arrival of the leading edge of the film 1, the drive solenoid of the arm 48,
The electromagnetic plunger 117 and the compressed air supply source 203 are turned off synchronously. As a result, the arm 48 returns to its initial position, and the leaf spring 103 returns to the position shown in FIG. 7 by its own elastic energy. At the same time, gas blowing is also stopped.

Further, in the embodiment of the present invention, when the winding diameter of the film l is 55 iom or less, the switch 109 is turned on and the tip of the leaf spring 103 is set to move to a position of 60 mm in terms of the winding diameter of the film l. ing. This is arm 4
This is important in ensuring that the leaf spring 103 does not come into contact with the outer periphery of the film 1 when the film 8 is swung.

However, as long as the setting ensures that the leaf spring 103 does not come into contact with the outer periphery of the film l, the setting is not limited to the above numerical values, and of course, any numerical value may be set.

Further, in addition to the above-described embodiments, the present invention may be configured such that the leaf spring moves continuously in the direction of the rotation center of the reel within the running path by interlocking the swing amount I of the arm. Further, a protruding member separate from the leaf spring may be electrically moved gradually closer to the outer circumferential surface of the film in accordance with the winding diameter of the film. Further, the gas may be blown out only when the winding diameter of the film 1 is small depending on whether the switch 309 is turned on or off.

<Effects> As described above, according to the present invention, it is possible to reduce the occurrence of jams during film feeding due to static electricity even in low-cost cartridges that are not subjected to conductive treatment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram schematically showing a roll film leading end feeding device according to an embodiment of the present invention. FIG. 2 is a schematic front view showing a cartridge and peeling means, which are the main parts of a roll film leading end feeding device according to an embodiment of the present invention, and FIG. 3 is a roll film leading end feeding device 17 according to an embodiment. FIG. 4 is a schematic front view showing the positional relationship between the cartridge and the peeling means, and FIG. 4 is the same. FIG. 5 is a schematic configuration diagram showing a roll film carrier, FIG. 6 is a perspective view showing a cutout of a cartridge of a roll film leading end feeding device according to an embodiment, and FIG. 7 is a film winding according to an embodiment. FIG. 8 is a schematic front view showing the operation of the film guide member when the diameter is large, and FIG. 8 is a schematic front view showing the operation of the film guide member when the winding diameter is small. be. FIG. 9 is a front view showing a conventional low film cartridge, and FIG. 1O is a sectional view taken along the line ff-ff in FIG. Fig. i1 is a schematic front view showing the main parts of the roll film leading edge feeding device according to the prior application 1:0; Fig. 12 is a schematic front view showing the misfilled state in the device of the prior application;
and FIG. 13 is a schematic front view showing a misfeed state in the device of the prior application. 1--φj-film, 3... Reel, 39... Cartridge, 45... Opening, 47... Peeling means, +03... ...Plate spring (film guide member), 210... Gas blowing means. Figure 1

Claims (1)

[Claims] (1) In a roll film leading edge feeding device that feeds the leading edge of the film out from the opening of a cartridge that rotatably supports a reel on which the film is wound, the leading edge of the film is transported from the outer surface of the film wound on the reel. A peeling means that peels the film and sends it out from the opening, a guide member that is provided so as to be able to fit between the reels from a notch in the cartridge, and a film guide that moves the guide member toward the film according to the winding diameter of the film. What is claimed is: 1. A roll film leading end feeding device comprising: a gas blowing device for blowing gas in a film feeding direction from a blowing port provided in the guide member.