JPH01195433A - Device for feeding out leading edge of roll film - Google Patents

Abstract

PURPOSE:To prevent a failure in feeding out a roll film by separating the leading edge of the film from the outer surface of the film, feeding it outside from an opening part and blowing gas from a part between the inner surface of a cartridge and the outer surface of the film in the feeding out direction of the film. CONSTITUTION:In case of feeding out the leading edge of the film 1 from the cartridge 39, a separation means 47 separates the leading edge of the film 1 from the outer surface of the film 1 wound on a reel 3 and also feeds out the leading edge to the outside of the cartridge 39 from the opening part 45 of the cartridge 39. In such a case, a gas blowing means 70 blows the gas between the inner surface of the cartridge 39 and the outer surface of the film 1 in the feeding out direction of the film 1. Thus, the leading edge of the film 1 is smoothly fed to the outside.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is an improvement of a roll film leading edge feeding device for feeding the leading edge of a roll film wound and stored in a cartridge in a microfilm reader or the like to the leader. Regarding.

<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 failure to feed the film. It was getting worse.

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

As shown in FIGS. 5 and 6, this cartridge 2 rotatably stores a roll 8 on which a roll film is wound in the center, and feeds and winds the roll film from an outlet 4A thereof. It is used to return the data. The cartridge 2 has a guide member 2A for the reel 8 on the inner peripheral side, and the guide member 2A has a square cross section and is supported by a support portion 2B, as shown in FIG.

Here, a static elimination brush 6 of a predetermined length is disposed to protrude from the inner circumferential surface of the guide member 2A.

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, even with such conventional roll film cartridges, although it has been possible to address and improve the problem of poor feeding of the leading edge of the film due to static electricity,
Still, it was not possible to deal with the following delivery defects.

That is, when the thickness of the roll film becomes extremely thin and its rigidity in the feeding direction decreases, feeding defects occur due to bending of the film. In addition, when the winding diameter of the film is small, the amount of feed at the leading end becomes long, resulting in low rigidity and bending of the film. Furthermore, if the leading edge of the film is curled or straight in the opposite direction to the feeding direction, the leading edge of the film may be unfeeded properly.

In addition, in view of the above problems, the applicant for the patent in question
In a patent application dated January 19, 2013, a roll film leading edge feeding device has already been proposed.

As shown in FIG. 7, this device consists of a long film 7 wound around a reel 73 in a cartridge 71.
5 to the outside, the reel drive mechanism rotates the reel 73 in two directions, forward and reverse of the direction in which the film 75 is wound and the direction in which the film 75 is sent out; reel 7
3, a peeling roller 79 that rolls into contact with the film 75 and guides the film 75 so that its tip is peeled off from the reel 73; , peeling roller 7
9 into contact with and away from the film 75.

81 is a swinging fulcrum of an arm (constituting a part of the swinging mechanism) that integrally supports these rollers 77 and 79, and 83 is a swinging fulcrum for rotating both rollers 77 and 79 via a belt 85. It is a driving roller.

By this swinging 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 reels the film 75 on the downstream side in the film feeding direction. While tightening the film 73, the peeling roller 79
The leading end is also peeled off from the outer surface of the film 75 wound on the reel 73 on the upstream side thereof.

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

That is, as shown in FIG. 8, when the roll diameter of the roll film 75 is small and the tip shape is curled in the opposite direction to the feeding direction (X in the diagram) or straight (Y in the diagram) When the reel 73 rotates in the feeding direction, the cartridge 7 moves as shown by 21 and Z2 in the figure.
A loop was formed between the film 75 and the inner surface of the film 75, resulting in a failure in feeding the leading end of the film 75.

Further, as shown in FIG. 9, when the leading edge of the film 75 moves along the inner surface of the cartridge 71, static electricity generated by contact between the surfaces reduces the feeding speed of the leading edge of the film 75, resulting in the broken line shown in the figure. A loop like this 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 that prevents roll film feeding failures.

Means for Solving the Problems> To achieve this object, a roll film leading end feeding device according to the present invention rotatably supports a reel wound with a film, and feeds the film through an opening. A cartridge is formed such that the leading end can be sent out to the outside and has a positioning notch, and is fixed by inserting a positioning member into the notch, and the leading end of the roll film is fed out from the cartridge. In the feeding device, a peeling means that peels the leading end of the film from the outer surface of the film wound on the reel and sends it out from the opening, and is disposed on the positioning member between the inner surface of the cartridge and the outer surface of the film. and gas blowing means for blowing out gas in the film feeding direction from the air blowing opening.

<Function> In the roll film leading edge feeding device according to the present invention, a reel on which a film is wound is rotatably supported in the cartridge, and the leading edge of the film is transferred to the outside through the opening of the cartridge. It is formed so that it can be sent out.

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. In this case, the gas blowing means blows gas between the inner surface of the cartridge and the outer surface of the film in the film feeding direction, so that the leading edge of the film is smoothly fed to the outside.

The cartridge also has a positioning notch. By inserting the positioning member into this notch,
The cartridge is fixed.

Further, the gas blowing means blows out gas in the film feeding direction from a blowing port disposed on the positioning member, thereby sending the leading end of the film to the outside through the opening.

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

Fig. 1 shows the tip feeding H of the roll film according to the present invention.
FIG. 2 is an exploded perspective view showing a cartridge and its positioning member, which are the main parts of the device. FIG. 2 is a schematic diagram showing a roll film carrier. FIG. 3 is a schematic front view showing the main parts of the roll film leading edge feeding device.

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

That is, a feeding drive roller 7 is provided between the reel 3 for winding the microfilm 1 and the reel 5 for winding the film.
and its auxiliary roller 9, a pair of feed-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,
A pair of winding side film guides 23 are provided.

A drive shaft 25 connected to these reels 3 and 5, respectively.
．． 27 and the feed drive roller 7 are rotated appropriately in two directions, forward and reverse, by a motor (not shown), and the film 1 is wound and unwound between the two, and the film 1 is fed between the bonding glasses 17 and 19. It is something to do.

Then, the image information recorded on the microfilm 1 is enlarged 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 removably attached to the drive shaft 25 and is housed in a cartridge case 39, making it convenient to handle and replace with other roll film cartridges.

As shown in FIG. 3, the mechanism for feeding the leading end of the roll film 1 between the feeding drive port 7 of the roll film carrier and the auxiliary roller 9 is such that the positioning member 41 on the carrier side is connected to the notch 43 of the cartridge 39. When the cartridge 39 is inserted into the reel 3, the roll film 1 wound around the reel 3 is sent out from the cartridge 39 which is positioned and fixed.

This positioning member 41 prevents the cartridge 39 from being inserted incorrectly.

This feeding mechanism, that is, a peeling means 47 that peels the tip of the film 1 from the outer surface of the film 1 wound on the reel 3 and sends the peeled tip of the film 1 to the outside through an opening 45 formed in the cartridge 39 , an arm (not shown), a peeling roller 49, a tightening roller 51, and the like.

Specifically, the arm is swingably provided around the fulcrum 53 so as to be able to approach and move away from the reel 3 through the opening 45. The peeling roller 49 and the tightening roller 51 are rotatably attached to the arm, and the peeling roller 49 is located in the feeding direction of the film 1 (direction of arrow W in FIG. 3) and on the upstream side of the film l. Sealing roller 51
are respectively disposed on the downstream side of the film 1 in the same direction so as to be able to come into pressure contact with the outer surface of the film 1.

Further, 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. That is, the intermediate roller 55
．． 57 and belts 59 and 61, the peeling roller 49 and the wrapping roller 51 are driven to rotate in opposite directions. Furthermore, the peeling roller 49 is made of, for example, hard rubber, and has predetermined grooves formed on its outer surface to facilitate peeling off the film 1.

The arm is connected to a solenoid (not shown), etc.
When being fed out, it is swung in a direction approaching the reel 3.

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., the reel drive means 3
It constitutes 0.

Here, as shown in FIG. 1, the cartridge 39 fixed to the carrier by inserting the positioning member 41 into the notch 43 rotatably accommodates and supports the reel 3, and therefore, The arcuate outer surface of the positioning member 41 constitutes a portion of the arcuate inner surface of the cartridge 390, which faces the outer surface of the reel 3.

An air outlet 6 is provided on the arcuate surface of this positioning member 41.
5 is formed, and a tube 67 is formed in this outlet 65.
A compressed air supply source 69 is connected via. The compressed air supply source 69 (for example, a compressor), the tube 67, and the air outlet 65 collectively serve to blow out gas in the direction of feeding the film 1 between the inner peripheral surface of the cartridge 39 and the outer surface of the film 1. Blowing means 7
It constitutes 0.

In the roll film leading end feeding device having the above configuration, first, the cartridge 39 is set in the roll film carrier. Notch 43 in positioning member 41
It is inserted into.

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

Then, the reel 3 is rotated and driven by the pulse motor constituting the reel driving means 30 in the film tightening direction in the counterclockwise direction (opposite direction to W) in FIG. This is a preparation to eliminate slack in the film 1 on the reel 3 and to ensure that the leading edge of the film 1 is fed out.

Next, the reel driving means 30 shifts from high-speed seaming to low-speed seaming. At this time, the solenoid is driven to swing the arm in the counterclockwise direction in FIG.
is pressed against the outer surface of the film 1. This is to further tighten the film 1, which has been tightened to some extent by high-speed tightening, onto the reel 3 more strongly.

Here, 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 61.59 and roller 57.55,
The peeling roller 49 is driven to rotate clockwise, and the tightening roller 51 is driven to rotate counterclockwise.

Therefore, while the film 1 is tightened on the downstream side by the tightening roller 51, it is peeled off from the outer surface of the film 1 by the peeling roller 49 on the upstream side and sent out from the opening 45.

That is, the tightening roller 51 rotates counterclockwise at a speed higher than the rotational speed of the reel 3 to tighten the film 1 on the reel 3, and the peeling roller 49 rotates clockwise to tighten the film 1 that has been pressed against the reel 3. It peels off from its outer surface on the upstream side.

At this time, the compressed air source 69 of the gas blowing means 70
are driven synchronously, and compressed air is blown out from the air outlet 65 between the outer surface of the film 1 and the inner peripheral surface of the cartridge 39 in the above-mentioned delivery direction (clockwise direction). As a result, even if the winding diameter of the film 1 is small and its thickness is thin (about 1/1000 inch), and the leading edge of the film 1 is straight or curled in the opposite direction, the compressed air will Since an air current is formed around the outer surface of the film 1 in a clockwise direction, that is, in a feeding direction, the leading edge of the film 1 is smoothly guided and fed out.

The timing of blowing out the air is after the winding operation is completed, that is, at the same time as the reel 3 is rotated in the sending direction (W direction), and the blowing stops when the leading edge of the film 1 reaches the encoder roller 13.

Jujube Lambda Prong 1 FIG. 4 is an exploded perspective view showing a cartridge and a positioning member, which are the main parts of a roll film leading edge feeding device according to a second embodiment of the present invention.

As shown in this figure, in this second embodiment, a thin plate 91 made of a conductive material is attached to the arcuate surface of the positioning member 41 and grounded (this member 41 is entirely made of a conductive material). ).

As a result, even if there is frictional contact between the outer surface of the tip of the film 1 and the circular arc surface, such as when the winding diameter of the film 1 is large, static electricity can be reliably removed and the tip can be fed out more reliably. It becomes.

Other structures and functions are the same as those of the above embodiment.

Although compressed air was used in these examples, other gases may also be used. In addition, since the compressed air source is fed to the outlet through a tube, the compressed air source can be installed at any location on the roll film carrier, increasing the degree of freedom in terms of space.

Effects> As explained above, according to the present invention, it is possible to completely eliminate the feeding failure at the leading edge of the film. For example, if the film roll diameter is small, the film itself is thin,
Furthermore, even if the leading end is formed into a straight shape or the like, the leading end of the film can be reliably fed out.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing the main parts of a roll film leading edge feeding device according to a first embodiment of the present invention, FIG. 2 is a schematic configuration diagram showing a roll film carrier according to the first embodiment, and FIG. 3 is a schematic front view showing the main parts of the roll film leading edge feeding device according to the first embodiment;
The figure is an exploded perspective view showing the main parts of a roll film leading edge feeding device according to a second embodiment of the present invention, FIG. 5 is a front view showing a conventional low film cartridge, and FIG. 6 is a VI of FIG. 5. -Vl arrow sectional view; FIG. 7 is a schematic front view showing the main parts of the roll film leading edge feeding device according to the prior application; FIG. 8 is a schematic front view showing a misfeed state in the device of the earlier application; FIG. 9 is a schematic front view showing a misfeed state in the device of the prior application. 1... Film, 3 1111... φ reel, 30... Reel driving means, 39... φ cartridge, 41... - Positioning member, 43... Notch, 45...φ opening, 47... Peeling means, 70... Gas blowing means. Patent Applicant Minolta Camera Co., Ltd. Agent Patent Attorney Kiyoshi Kuwai (1 other person) Figure 5 A Figure 7 Figure 8, 71 Figure 9 March 23, 1988

Claims (1)

[Claims] (1) A cartridge is formed to rotatably support a reel on which a film is wound, and to feed the leading end of the film to the outside through an opening, and has a positioning notch, and the cartridge is positioned in the notch. In a roll film tip feeding device that is fixed by inserting a member and feeds out the leading edge of the film from this cartridge, the leading edge of the film is peeled from the outer surface of the film wound on the reel and from the opening. The present invention is characterized by comprising: a peeling means for sending out the film to the outside; and a gas blowing means for blowing out gas in the film feeding direction from a blowing port provided in the positioning member between the inner surface of the cartridge and the outer surface of the film. Roll film tip feeding device.