JP2732658B2 - Microfilm reader - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microfilm reader for retrieving and displaying a microfilm wound around a cassette.

[Conventional technology]

In the microfilm reader, the cassette is loaded in the state of being fitted to the reel shaft, and in the loaded state of the cassette, after the cassette is loaded, the winding portion of the microfilm on the cassette is rotated to peel off the leading end of the microfilm. The microfilm is wound on the take-up reel while the tip of the microfilm is peeled off from the outer periphery of the microfilm take-up part on the cassette at the peeling section and the microfilm is pulled out from the cassette and pulled out from the cassette. Has become. Then, after winding the leading end of the microfilm onto the take-up reel, the take-up reel is rotated in the take-up direction to pull out the microfilm from the cassette reel, and conversely, the reel shaft is rotated in the take-up direction to take the microfilm. A desired image frame on the microfilm is searched for and displayed by repeating the operation of winding around a cassette reel.

In this type of microfilm reader, a driving roller or a driving belt is provided which is in contact with the outer periphery of the microfilm winding portion on the cassette in a loaded state of the cassette, and after the cassette is loaded by the driving roller or the driving belt. The microfilm take-up unit on the cassette reel is rotated to guide the leading end of the microfilm to the peeling unit along the inner periphery of the case of the cassette reel.

However, in the case of a conventional microfilm reader of this type, if the leading end of the microfilm abuts on the driving roller or the driving belt with the cassette loaded, due to variation in the leading end position of the microfilm, the leading end of the microfilm is thereafter The microfilm take-up part on the cassette is rotated about 3/4 of the time until the part reaches the peeling part, and during this time the tip of the microfilm is caught in the cassette reel case, and in some cases, the cassette reel In some cases, the film was clogged.

[Problems to be solved by the invention]

The present invention has been made in view of the above-described circumstances, and has as its object to obtain a microfilm capable of guiding the leading end of the microfilm to a peeling portion without being caught by a case of the cassette reel after the cassette is loaded.

[Means for solving the problem]

According to the present invention, a cassette is loaded in a state of being fitted to a reel shaft, and after loading the cassette, the microfilm take-up unit is rotated to guide the leading end of the microfilm to the peeling unit. A microfilm reader for peeling a microfilm from the cassette by peeling off the tip of the microfilm from the outer periphery of the microfilm take-up portion on the cassette, wherein the outer periphery of the microfilm take-up portion on the cassette when the cassette is loaded. A driving roller for rotating the microfilm take-up unit on the cassette after the cassette is loaded, and a rotation direction of the drive roller on the outer periphery of the microfilm take-up unit on the cassette when the cassette is loaded. Abuts at a downstream position and at a position upstream of the peeling portion in the rotational direction. An auxiliary drive roller for rotating the microfilm take-up section on the cassette together with the drive roller; and a direction in which the front end of the microfilm is wound around the auxiliary drive roller and abuts on the auxiliary drive roller in the direction of rotation of the take-up section. A guide belt that guides the auxiliary drive roller at a peripheral speed higher than the peripheral speed of the drive roller, and the guide belt is more cassette than a tangent line from a position where the front end of the microfilm contacts the auxiliary drive roller. The microfilm is guided along a direction inclined toward the outer periphery of the microfilm winding section.

[Action]

In the present invention having the above configuration, the drive roller and the auxiliary drive roller are sequentially brought into contact with the outer periphery of the microfilm take-up portion on the cassette in the loaded state while the cassette is loaded, thereby driving the cassette after the cassette is loaded. The microfilm winding section on the cassette is rotated by receiving the driving force of the roller and the auxiliary driving roller. By this rotation, the leading end of the microfilm is guided to the peeling section, and peeled from the outer periphery of the winding section to the cassette at the peeling section,
Thereafter, the leading end of the microfilm is sent out to the take-up reel while being pulled out from the cassette reel, and wound around the take-up reel.

Here, when the cassette film is loaded, when the leading end of the microfilm is positioned between the peeling unit and the driving roller due to variation in the leading end position of the microfilm, the rotation of the microfilm winding unit on the cassette reel causes rotation. The leading end of the microfilm passes between the winding section and the driving roller and reaches between the winding section and the auxiliary driving roller. During this time, the peripheral speed of the auxiliary driving roller is lower than the peripheral speed of the driving roller. Because it is fast, the tip of the microfilm does not sag. After the leading end of the microfilm contacts the auxiliary drive roller, the guide belt moves the leading end of the microfilm from the contacting portion to the cassette reel in a direction of rotation of the winding portion from its tangent line. The cassette is guided along the direction approaching the outer periphery of the microfilm take-up portion, thereby preventing the cassette case from being caught.

〔Example〕

(Structure of Entire Apparatus) FIG. 1 shows a microfilm reader 20 to which the present invention is applied.

In the microfilm reader 20, a cartridge loading section 22 is provided on the front side of the apparatus (the right side in FIG. 1), and a cartridge 24 is loaded on the cartridge loading section 22 from the front side of the apparatus. The cartridge loading section 22 has a second
As shown in the figure, a reel shaft 25 is provided, and when the cartridge 24 is loaded, a cassette 26 of the cartridge 24 is fitted to the reel shaft 25.

In the cartridge 24, a microfilm 28 is wound on a cassette 26 in advance, and after the microfilm 28 is loaded into the cartridge loading unit 22, the leading end of the microfilm 28 is pulled out from the outer periphery of the microfilm winding unit on the cassette 26. Take-up reel 30 at the back of the device (left direction in FIG. 1)
It can be wound around. After winding the leading end of the microfilm onto the take-up reel 30, the take-up reel
The microfilm 28 is pulled out of the cassette 26 by rotating the reel 30 in the winding direction (clockwise direction in FIG. 1), or the reel shaft 25 is rotated in the winding direction (counterclockwise direction in FIG. 1). By winding the film 28 around the cassette 26, each image recorded on the microfilm 28 can be passed between the reel shaft 25 and the take-up reel 30 (see FIG. 2). .

A light source 32 is provided between the reel shaft 25 and the take-up reel 30 so as to face the transport path of the microfilm 28.
The microfilm 28 is irradiated with light from 32 to project each image recorded on the microfilm 28 onto a screen 38 through an optical system including a lens 34 and a plurality of reflection mirrors 36. Further, if necessary, each image recorded on the microfilm 28 is
And can be copied. The mirror
Reference numeral 40 denotes an image recorded on the microfilm 28.
When projecting an image recorded on the microfilm 28 onto the copying apparatus 42, the arrangement shown by a solid line in FIG. Into the light path.

(Structure of Cartridge) In this microfilm reader 20, the cartridge 24
The two types of cartridges shown in FIGS. 3 and 4
A drive system for the microfilm 28 is configured so that 24A and 24B can be shared.

As shown in FIG. 3, the cartridge 24A has a cassette box 26 rotatably stored inside a substantially box-shaped case 44, and the microfilm 28 is wound around the cassette box 26 inside the case 44 to form the case 44. The tip of the microfilm 28 can be pulled out of the cassette 26 through the opening 46 thus formed. In the cartridge 24A, a metal disk 56 is attached to the axis of the cassette 26, and four small-diameter holes 54 are provided around the axis at substantially equal intervals.
Are formed parallel to the axis. The small diameter hole 54 is the reel shaft 25
It is for fitting with. As this kind of cartridge, there is one manufactured by 3M.

On the other hand, as shown in FIG. 4, the cartridge 24B has the cassette 26 rotatably stored inside the case 50 and the microfilm is attached to the cassette 26 inside the case 50.
28 in that the leading end of the microfilm 28 can be pulled out of the cassette 26 through an opening 52 formed in the case 50.
Same as A. However, a large slit 58 is formed in the side wall of the case 50 (see FIG. 8), in that a semicircular hole 48 having two bottoms is formed by being partitioned by a partition plate 47 around the axis of the cassette reel 26. Cartridge 24 at the point where
Different from A. The semicircular hole 48 is for fitting with the reel shaft 25, and the slit 58 is for driving the microfilm 28. Note that there is an ANSI standard as this kind of cartridge.

The drive system of the microfilm 28 will be described in detail. The drive system of the microfilm 28 includes, in addition to the reel shaft 25 and the take-up reel 30 shown in FIGS. As shown, a driving roller 80, a peeling claw 82, and an auxiliary driving roller 84 are provided.

(Reel shaft drive structure) At the end of the reel shaft 25, a small diameter hole 54 of the cartridge 24A is provided.
Accordingly, two small-diameter shafts 74 are projected in a state parallel to the axis, and a permanent magnet 76 is embedded. Thus, the reel shaft 25 is moved to the cassette 26 of the cartridge 24A by the attraction of the permanent magnet 76 to the disk 56 of the cartridge 24A and the insertion of the small-diameter shaft 74 into the small-diameter hole 54 of the cartridge 24A.
And the small-diameter shaft 74 is inserted into the semicircular hole 48 of the cartridge 24B so that the reel shaft 25 is
The cassette reel 26 of B is also fitted. Therefore, the reel shaft 25 can be fitted to the cassette 26 in any of the cartridges 24A and 24B.

The small diameter shaft 74 is urged by urging means (not shown) to
The projection 25 projects from the tip, and moves in the axial direction against the urging force of the urging means to be embedded in the reel shaft 25.

The reel shaft 25 is connected via a joint 60 to a drive shaft 62 rotated by a drive force transmission mechanism (not shown) by the drive force of the supply motor 64, and is rotated by the drive force of the supply motor 64. . The joint 60 is integral with the reel shaft 25, and is movable in the axial direction with respect to the drive shaft 62. A pair of flanges 66 are formed on the outer periphery of the joint 60, and a roller 68 is fitted between the flanges 66. The roller 68 is attached to the arm 70, and the solenoid 71 is connected through the arm 70.
The joint 60 is moved in the axial direction by the driving force of the solenoid 71, and the reel shaft 25 is made to protrude and retract inside the cartridge loading section 22.

(Driving Structure of Take-up Reel 30) As shown in FIG. 2, the take-up reel 30 has the outer periphery of the endless belt 140 in contact with a part of the outer periphery of the microfilm take-up portion. Is to be wound up. The endless belt 140 is wound around a driving roller 144 which is rotated by a driving force of a take-up motor 142 via a driving force transmission mechanism (not shown), and rotates the take-up reel 30 by a driving force of the take-up motor 142. ing.

(Drive Structure of Driving Roller 80) The driving roller 80 is attached to the other end of an L-shaped driving arm 86 rotatably supported at one end by an upright base plate 81 via a fixing pin 85. When the cartridge 24A is inserted into the cartridge loading unit 22 by the rotation of the drive arm 86 around the cartridge cartridge 24A, the cartridge 24A is inserted into the cartridge loading unit 22 and passes through the opening 46 of the cartridge 24A to contact the outer periphery of the microfilm winding unit to the cassette 26. Is to be touched. On the other hand, when the cartridge 24B is inserted into the cartridge loading section 22, the rotation of the drive arm 86 around the fixing pin 85 causes the cartridge 24 to come into contact with the outer periphery of the microfilm winding section to the cassette 26 through the opening 52 of the cartridge 24B. It has become. Therefore, the drive roller
Reference numeral 80 indicates that the cartridge 80 is inserted into the cartridge loading section 22 in any of the cartridges 24A and 24B, and is brought into contact with the outer periphery of the microfilm take-up section on the cassette 26 by the rotation of the drive arm 86 (see FIG. 8 and 9).

A torsion coil spring 98 (shown in FIG. 6) is attached to the drive arm 86 around the fixing pin 85, and the driving arm 86 enters the inside of the cartridge loading section 22 by the biasing force of the torsion coil spring 98 (FIG. 5, FIG. (Direction of arrow C in FIG. 6). Further, a rotating wheel 90 is connected to the driving arm 86 via a link 88 at an intermediate portion, and is rotated around the fixed pin 85 by the rotation of the rotating wheel 90. One end of the link 88 is rotatably supported by the rotating wheel 90 and the other end is rotatably supported by the fixed pin 92, and the intermediate portion of the drive arm 86 is connected to the intermediate portion via the connecting pin 94. When the rotating wheel 90 rotates, it is rotated around the fixed pin 92.
The rotating wheel 90 is rotated by the driving force of a motor (not shown) and linked.
Rotate 88 around the fixing pin 92, thereby connecting pin
A direction in which the drive roller 86 is retracted from the inside of the cartridge loading portion 22 against the biasing force of the coil spring 98 by twisting the drive arm 86 via 94 (the direction of arrow B in FIGS. 5 and 6).
It is to be rotated.

In addition, a pulley 104 is pivotally supported by the drive arm 86 at a position spaced a predetermined distance from the pulley 102 in the arm longitudinal direction while the pulley 102 is pivotally supported adjacent to the drive roller 80,
A belt 106 is wound around each of the pulleys 102 and 104.

The pulley 102 is connected to the driving roller 80 via a gear (not shown), and is rotated together with the driving roller 80. The belt 106 is wound around a driving pulley 105 between the pulley 102 and the pulley 104. The drive pulley 105 is fixed to a drive shaft 108 which is supported by the base plate 81. The drive shaft 108 is rotated by the driving force of a motor (not shown) to drive the drive roller 8 via a belt 106, pulleys 102 and 104.
0 can be rotated.

The drive shaft 108 has a drive pulley 105 as shown in FIG.
A pair of transport rollers 96 are rotatably supported on both sides of the roller. The transport roller 96 is provided in the transport path of the microfilm 28, and when the microfilm 28 is transported, as shown in FIG.
Is wound around, and the transport direction of the microfilm 28 is changed from the arrow X direction in FIG. 10 (C) to the arrow Y direction in FIG. 10 (C).

These transport rollers 96 include transport rollers 11 having a long shaft length.
2 are arranged to face each other so that the transport rollers 96 and 112 can pinch and transport the microfilm. Transport roller
Reference numeral 112 is attached to the rotating shaft 103 which is supported by the base plate 81. The rotating shaft 103 is connected to the driving shaft 108 via gears 110 and 111, and is rotated by receiving the driving force of the driving shaft 108. Thus, the transport roller 96 can pinch and transport the microfilm 28 with the transport roller 112. In this embodiment, the transport roller 112 is rotated at a peripheral speed of 1.7 times the feed speed of the microfilm 28 between the transport roller 96 and the transport roller 112.

The transport roller 112 is provided with a small-diameter portion at an intermediate portion in the axial direction, is wound around an endless belt 124, and is rotated together with the rotating roller 126 via the belt 124. The belt 124 is rotated by receiving the driving force of the drive shaft 108 via the transport roller 112, and when the microfilm 28 is wound around the take-up reel 30, the leading end of the microfilm 28 is transported as shown in FIG. A guide is provided between the roller 96 and the transport roller 112.

The transport shaft 112 of the transport roller 112 is supported by the transport arm 114 and can be moved toward and away from the transport roller 96. One end of the transfer arm 114 has a base plate
It is rotatably supported on 81 and the rotating shaft 103 on the middle part.
, And the transport roller 112 is moved toward and away from the transport roller 96 by rotation about the fixing pin 116. A torsion coil spring 118 (shown in FIG. 6) is attached to the transfer arm 114 around the fixed pin 116, and a solenoid 122 is connected via a connecting pin 120 to a side opposite to a shaft supporting the fixed pin 116. The output shaft is connected. The torsion coil spring 118 moves the conveying roller 112 to the conveying roller 96.
The transfer arm 14 is urged in a direction to separate from the transfer arm 14.

The solenoid 122 is excited and the torsion coil spring 1
The transport arm 114 is rotated against the urging force of 18, and the transport roller 112 is moved in the direction of approaching the transport roller 96 (the direction of arrow D in FIGS. 5 and 6).

(Drive structure of auxiliary drive roller 84) The auxiliary drive roller 84 is an auxiliary arm shown in FIGS.
It is pivoted to 130 tips. The auxiliary arm 130 is rotatably supported at its base on a drive shaft 128 which is rotatably supported by the base plate 81.
It is urged in the direction of arrow E in the figure. With this biasing force, the drive shaft
The auxiliary arm 130 is rotated around 128 and the auxiliary drive roller 84
8, the cartridge 24B is inserted into the cartridge loading section 22 and abuts on the outer periphery of the microfilm winding section to the cassette 26 through the slit 58 of the cartridge 24B as shown in FIG. 8 in a state where the cartridge 24B is inserted into the cartridge loading section 22. It is supposed to be. On the other hand, when the cartridge 24A is inserted into the cartridge loading section 22, the auxiliary arm 130 comes into contact with the outside of the case 44 of the cartridge 24A as shown in FIG. 9, and the auxiliary drive roller 84 enters the inside of the case 44. The auxiliary drive roller 84 cannot be
This prevents the microfilm 28 from contacting the outer periphery of the winding portion of the microfilm 28, and prevents the auxiliary drive roller 84 from sliding against the case 44 of the cartridge 24A.

A drive pulley 131 is attached to the drive shaft 128, and a part of the endless belt 132 is wound around the drive pulley 131. Endless belt 132
The other part is wound around a groove formed at an axially intermediate portion of the auxiliary drive roller 84.

The drive shaft 128 is configured to be rotated by a drive force of a motor (not shown). Therefore, the auxiliary drive roller 84
Is rotated by a driving force of a motor (not shown) via a drive shaft 128, and at a position in contact with the outer periphery of the microfilm winding section on the cassette 26, the microfilm winding section on the cassette 26 is driven by the driving roller 80. It can rotate with it.

The belt 132 is connected to the auxiliary drive roller 84 as shown in FIG.
At the position where it abuts on the outer periphery of the microfilm take-up part on the cassette reel 26, and the tangent line 160 of the microfilm take-up part from the abutment part in the unwinding direction of the microfilm take-up part on the cassette reel 26.
It is extended in a state of being inclined in a direction approaching the outer periphery of the microfilm winding portion to the cassette 26, and is used for guiding the leading end of the microfilm 28 in the cartridge 24.

The auxiliary arm 130 has a solenoid 138 via a pin 136.
Output shafts are connected. The solenoid 138 is energized and the auxiliary arm 130 is moved in the direction of retreating the auxiliary drive roller 84 from the inside of the cartridge loading section 22 against the urging force of the extension coil spring 134 (the direction of the arrow E in FIGS. 5 and 6).
The auxiliary drive roller 84 is separated from the position where it comes into contact with the cassette film 26 in the outer peripheral direction of the microfilm winding portion to the non-contact position by this rotation.

(Drive Structure of Peeling Claw 82) The peeling claw 82 is rotatably supported by the drive arm 86 via a fixing pin 140. The peeling claw 82 has a fixing pin 14
The torsion coil spring 142 is mounted around 0, and the tip of the torsion coil spring 14 is positioned at a position where the driving roller 80 comes into contact with the outer periphery of the microfilm winding portion on the cassette 26.
By the biasing force of 2, the microfilm 28 is pressed against the outer periphery of the winding portion of the cassette 26 against the cassette 26.
For this reason, when the cassette reel 26 rotates in the unwinding direction,
As shown in FIG. 10, the tip of the microfilm 28 is peeled from the winding portion of the microfilm onto the cassette 26 while buckling the tip. The center of rotation of the peeling claw 82 contacts the winding portion of the microfilm 28 on the cassette 26 regardless of the size of the winding diameter of the winding portion of the microfilm 28 on the cassette 26. The normal is always set to be substantially constant at the position.

Also, as shown in FIG. 10, the peeling claw 82 is moved from the microfilm winding portion onto the cassette reel 26 to the microfilm.
The tip of 28 can be guided between the belt 106 and the belt 124 after peeling. That is, as shown in FIG. 10, the film tip guide portion 82B of the peeling claw 82
When viewed in the axial direction of 40, a part of the belt 106 overlaps a guide surface which is a surface facing the belt 124, and the leading end of the film is peeled off by a claw 82.
To the belt 106 smoothly.

As shown in FIGS. 11 (A) and 11 (B), the peeling claw 82 comes into contact with the outer periphery of the microfilm winding portion on the cassette reel 26 to peel off the tip of the microfilm 28.
The width of the guide portion 82B that guides between the belt 106 and the belt 124 after peeling off the tip of the microfilm 28 is different from that of the guide portion 82A, and the peeling portion 82A is narrower than the guide portion 82B. Then, the tip width dimension W1 of the peeling portion 82A is 2 mm, and the guiding portion 82B
Has a width dimension W2 of 5 mm. The peeling portion 82A of the peeling nail 82 has a microfilm 2 as shown in FIG.
In the present embodiment, the tip of the microfilm 28 is formed in an arc with a curvature of 30 μm with respect to the thickness of the microfilm 28 of 60 μm.

(Control Device and Related Configuration) In the drive system of the microfilm 28 configured as described above, the first detection for detecting the passage of the microfilm 28 between the transport roller 96 and the light source 32 as shown in FIG. A switch 150 (shown in FIG. 2) is provided between the light source 32 and the take-up reel 30. A second detection switch 152 (shown in FIG. 2) for detecting the passage of the microfilm 28 is provided. Further, a third detection switch 154 (shown in FIG. 10) for detecting the amount of buckling of the microfilm 28 when the tip of the microfilm 28 is peeled from the outer periphery of the winding portion of the microfilm 28 on the cassette 26. Are provided near the peeling claw 82. Further, a control device 156 (shown in FIG. 2) for receiving signals from these detection switches is provided, and the operation of each member is controlled as shown in FIG. Note that the third detection switch 154 is, for example, a limit switch.

 Next, the operation of the present embodiment will be described.

In the microfilm reader 20, the cartridge loading section
A cartridge 24 is inserted into 22.

After the cartridge 24 is inserted into the cartridge loading section 22, the reel shaft 25 is protruded into the cartridge loading section 22 by the driving force of the solenoid 71 after a predetermined time has elapsed, and then the reel shaft 25 is driven in the direction of arrow A by the driving force of the supply motor 64. During the rotation, the drive arm 86 is rotated in the direction of arrow C by the biasing force of the torsion coil spring 86 during this rotation, so that the drive roller 80 and the peeling claw 82 wind the microfilm 28 around the cassette 26. It comes into contact with the outer periphery of the take-up part. When the cartridge 24B is used, the driving roller 80, the peeling claw 8
2 is in contact with the outer periphery of the winding portion of the microfilm 28 on the cassette reel 26, and the auxiliary drive roller 130 is rotated in the direction of arrow E by the urging force of the tension coil spring 134, and the auxiliary drive roller 84 is rotated. The microfilm 28 is in contact with the outer periphery of the winding section of the microfilm 28 on the cassette reel 26.

Here, the reel shaft 25 is rotated at a low speed during the initial period, and thereafter rotated at a high speed. In this embodiment, the speed is about 100 rpm and 100 ms during the initial period, and about 2000 rpm and 200 ms thereafter. As a result, the reel shaft 25 is
Then, the winding portion of the microfilm 28 around the cassette reel 26 is tightened. That is, the small-diameter shaft 74 of the reel shaft 25 is inserted into the semicircular hole 48 of the cartridge 24B or the small-diameter hole 54 of the cartridge 24A by the projection of the reel shaft 25 inside the cartridge loading portion 22. Small diameter shaft 74 is semicircular hole 4 of cartridge 24B
8, or even if it does not match the small diameter hole 54 of the cartridge 24A, the rotation of the reel shaft 25 causes the small diameter shaft 74 of the reel shaft 25 to be inserted into the semicircular hole 48 of the cartridge 24B or the small diameter hole 54 of the cartridge 24A. .

Moreover, since the initial rotation of the reel shaft 25 is low speed,
When the reel shaft 25 rotates, the small-diameter shaft 74 of the reel shaft 25 is connected to the semi-circular hole 48 of the cartridge 24B or the small-diameter hole of the cartridge 24A.
The small-diameter shaft 74 of the reel shaft 25 is securely inserted into the semicircular hole 48 of the cartridge 24B or the small-diameter hole 54 of the cartridge 24A without passing through the cartridge shaft 54. 26 is securely fitted. Then, the reel shaft 25 is rotated at a high speed in the winding direction of the microfilm 28 in a state where at least the driving roller 80 and the peeling claw 82 are in contact with the outer periphery of the winding portion of the microfilm 28 on the cassette reel 26. As a result, the winding portion of the microfilm 28 around the cassette 26 is quickly wound.

Therefore, microfilm into cassette reel 26
Even if the winding section 28 has loosened, this can be eliminated promptly when the cartridge 24 is loaded into the cartridge loading section 22.

After the reel shaft 25 is fitted to the cassette reel 26, the rotation of the reel shaft 25 is stopped by the stop of the operation of the supply motor 64, and at the same time, the transfer arm 114 is rotated in the direction of arrow D by the urging force of the torsion coil spring 118. Transport rollers 112
Abuts on the transport roller 96, and in this state, the gears 110 and 111 mesh with each other, and the transport rollers 112 and 96 are rotated. Further, when the rotation of the reel shaft 25 is stopped, the microfilm take-up portion on the cassette reel 26 receives a driving force by the drive roller 80 and is rotated in the unwinding direction of the microfilm 28. The rotation of the drive roller 80 causes the microfilm 28 to rotate. Is brought into contact with the peeling claw 82.

Here, when the cartridge 24B is used, the microfilm take-up portion on the cassette 26 is rotated in the microfilm unwinding direction by the driving force of the auxiliary driving roller 84 in addition to the driving force of the driving roller 80. For this reason, even if the leading end of the microfilm 28 is positioned between the peeling claw 82 and the driving roller 80 due to the variation of the leading end position of the microfilm 28, the rotation of the microfilm winding section around the cassette 26 causes the microfilm 28 to rotate. The tip is a drive roller 80
After passing through, the auxiliary driving roller 84
Is pressed down so that it does not fall apart. Further, since the auxiliary driving roller 84 is rotated at a peripheral speed that is 2-3% faster than the driving roller 80, the auxiliary driving roller 84 and the driving roller are rotated after the leading end of the microfilm 28 reaches the auxiliary driving roller 84.
There is no slack between 80. After the leading end of the microfilm 28 reaches the auxiliary drive roller 84, the belt 13
2, the leading end of the microfilm 28 is directed in the unwinding direction of the winding portion of the microfilm 28 of the cassette 26 so that its tangent line 160 (shown in FIG.
Is guided in a direction approaching the outer periphery of the microfilm take-up section, whereby the leading end of the microfilm 28 is not caught on the inner periphery of the case of the cartridge 24B and the peeling claw 8 is
It is guided toward two sides (see FIG. 8).

The tip of the microfilm 28 guided toward the peeling claw 82 abuts on the peeling claw 82 and is peeled while being buckled by the peeling claw 82 as shown in FIGS. 10 (A), (B) and (C). Is done. After that, the tip of the microfilm 28 is guided by the peeling claw 82 and is sent out between the belt 106 and the belt 124.

Here, a narrow peeling portion 82A (shown in FIG. 11) of the peeling claw 82 comes into contact with the tip of the microfilm 28, and the peeling portion 82A
As a result, the leading end of the microfilm 28 is peeled from the outer periphery of the wound portion of the microfilm 28 on the cassette 26.
After that, it comes into contact with the wide guide portion 82B (shown in FIG. 11) of the peeling claw 82, is guided by the guide portion 82B of the peeling claw 82, and is sent out between the belt 106 and the belt 124.

Therefore, the contact area between the tip of the microfilm 28 and the peeling claw 82 is small, and the microfilm 28
And the leading end of the microfilm 28 can be reliably peeled off from the outer periphery of the wound portion of the microfilm 28 onto the cassette 26 by the microfilm 28. After peeling off the tip of the microfilm 28, the microfilm 28 is guided by the guide portion 82B, so that a large contact area is ensured, and the peeling claw 82 moves the tip of the microfilm 28 between the belt 106 and the belt 124. Can be surely guided.

On the other hand, when the tip of the microfilm 28 is peeled, the third
The buckling amount of the microfilm 28 is detected by the detection switch 154, and when the buckling amount of the microfilm 28 exceeds a predetermined value, the driving arm 86 is rotated in the direction of arrow B by the driving force of a motor (not shown) and peeled. The pawl 82 is released from the position where it comes into contact with the outer periphery of the winding portion of the microfilm 28 to the temporary cassette 26 to the non-contact position.

Therefore, when the tip of the microfilm 28 is in close contact with the outer periphery of the winding portion around the cassette 26 due to static electricity or the like, the amount of buckling of the microfilm 28 is indicated by a two-dot chain line in FIG. 10 (A). However, in such a case, the peeling claw 82 is temporarily separated from the position where it comes into contact with the outer periphery of the winding portion of the microfilm 28 on the cassette 26, to the non-contact position. An elastic force acts on the film 28 so as to peel off the tip from the outer periphery of the microfilm winding portion on the cassette reel 26,
With this elastic force, the leading end of the microfilm 28 is reliably peeled off from the outer periphery of the portion wound around the cassette 26.

Microfilm 28 between belt 106 and belt 124
When the leading end of the microfilm 28 is fed to the cassette 26, the outer periphery of the winding section of the microfilm 28
The microfilm 28 is rotated in the unwinding direction by receiving the driving force of 25, and the leading end of the microfilm 28 is sent out between the belt 106 and the belt 124 by this rotation. That is, the operation control of the supply motor 64 causes the reel shaft 25 to rotate for a predetermined time when the reel shaft 25 is fitted to the cassette reel 26. The shaft 25 is rotated in the direction indicated by the arrow A, and this rotation also rotates the microfilm take-up portion on the cassette 26 in the microfilm unwinding direction. When the cartridge 24B is used, in addition to the driving force of the reel shaft 25 and the driving roller 80, the auxiliary driving roller
Receiving the driving force of 84, the winding section of the microfilm 28 on the cassette 26 is rotated in the microfilm unwinding direction.

The leading end of the microfilm 28 sent out between the belt 106 and the belt 124 is guided by the belt 106 and the belt 124 and sent out between the transport roller 96 and the transport roller 112,
The take-up reel 30 passes between the transport roller 96 and the transport roller 112.
Sent to the side. At this time, the leading end of the microfilm 28 is wound around a substantially 1/4 circumference of the outer periphery of the transport roller 96, and the winding direction changes the feeding direction and is sent to the take-up reel 30 side.

Here, the transport roller 112 is rotated by receiving the driving force of the drive shaft 108 by the meshing of the gears 110 and 111, while the transport roller 96 is rotated following the transport roller 112.

Therefore, the leading end of the microfilm 28 can be pinched and conveyed by the conveying rollers 112 and 96 with a large pinching force, and the microfilm 28 can be sent out to the take-up reel 30 with a large driving force. In this embodiment, the transport roller 112 is rotated at a peripheral speed of 1.7 times the feed speed of the microfilm 28 between the transport roller 96 and the transport roller 112, so that the microfilm 28 is There is no more slack near the peeling claw 82 than between 112.

When the microfilm 28 is sent to the take-up reel 30, the passage of the microfilm 28 is detected by the first detection switch 150 and the second detection switch 152 in the middle thereof, and the microfilm 28 is detected by the first detection switch 150. When it is confirmed that the vehicle has passed, the drive arm 86 and the auxiliary arm 130 are respectively driven by a motor (not shown) and a solenoid 138.
The drive roller 80 and the auxiliary drive roller 84 are rotated in the directions indicated by arrows B and E in response to the drive force, and the drive roller 80 and the auxiliary drive roller 84 are separated from the position where they contact the outer periphery of the winding portion of the microfilm 28 on the cassette 26 to the non-contact position. You. At the same time, the take-up reel 30 is rotated by the driving force of the take-up motor 142. On the other hand, the second detection switch 152 allows the microfilm 2
8 is confirmed, the rotation of the reel shaft 25 is stopped by the stop of the supply motor 64 after a lapse of a predetermined time after the passage of the microfilm 28 is confirmed, and at the same time, the transfer arm 114 is biased by the torsion coil spring 118. , The rotation of the conveyance roller 96 is stopped. After the passage of the microfilm 28 is confirmed by the second detection switch 152, a predetermined time has elapsed, and after the rotation of the reel shaft 25 and the transport roller 96 is stopped, the take-up motor 142 is stopped to rotate the take-up reel 30. Is stopped, and during this time, the microfilm 28 is wound around the take-up reel 30.

Here, when the passage of the microfilm 28 cannot be confirmed by the first detection switch 150 and the second detection switch 152, the reel shaft 25, the drive roller 80, the auxiliary drive roller 84, and the transport roller 96 are reversed to rotate the microfilm 28.
Is temporarily sent back to the cassette reel 26, and then the feed speed of the microfilm 28 is changed to change the microfilm 28
Is repeatedly sent out to the take-up reel 30 side. If the passage of the microfilm 28 cannot be confirmed by the first detection switch 150 and the second detection switch 152 by this repetition, the same operation is repeated. During this repetition, the feed speed of the microfilm 28 is changed each time. With this change, the microfilm 28 is sent out at 400 m / sec in the first time, but is sent out at 600 mm / sec and 300 mm / sec in the second and third times, respectively. Therefore, even when the tip of the microfilm 28 is curled due to a change in humidity or the like, the microfilm 28 is caught inside the cartridge 24 and is not sent out to the take-up reel 30 side,
The leading end of the microfilm 28 can be sent out to the take-up reel 30 side so that the curled microfilm 28 is not caught by the change of the feed speed of the microfilm 28. That is, when the feed speed of the microfilm 28 is 600 mm / sec, it is effective when the leading end of the microfilm 28 is curled along the winding locus on the cassette 26 in the longitudinal direction of the film. When the feed speed of the microfilm 28 is 300 mm / sec, the tip of the microfilm 28
This is effective when the curl is curled in the direction opposite to the take-up locus to 26.
Will not be caught.

After the leading end of the microfilm 28 is wound on the take-up reel 30, the take-up reel 30 is rotated by the driving force of the take-up motor 142 to pull out the microfilm 28 from the cassette 26 and the reel shaft 25 to the supply motor 64. By rotating the microfilm 28 around the cassette 26 by rotating the microfilm 28 with the driving force, a desired image frame is searched, stopped on the optical axis, projected on the screen 38 through the optical system, and thereby recorded on the microfilm 28. The displayed image is displayed on the screen 38. Also, if necessary, microfilm
The image recorded in 28 can be projected onto the copying device 42 and copied.

The present invention can of course be applied to the copying apparatus 42, that is, a microfilm reader without a printer.

〔The invention's effect〕

As described above, in the microfilm reader according to the present invention, when the cassette is loaded, the drive roller and the auxiliary drive roller are brought into contact with the outer periphery of the microfilm winding portion on the cassette along the rotation direction. After the cassette drive is loaded by the auxiliary drive roller, the winding portion of the microfilm onto the cassette is rotated, the peripheral speed of the auxiliary drive roller is made faster than the peripheral speed of the drive roller, and the leading end of the microfilm is moved by the guide belt. Is guided from the contact portion with the auxiliary drive roller in the direction of rotation of the winding portion in a direction approaching the outer periphery of the microfilm winding portion toward the cassette from the tangent line. After loading, peel off the tip of the microfilm without getting caught in the cassette reel case It has an excellent effect that can be guided to.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a microfilm reader to which the present invention is applied, FIG. 2 is a schematic perspective view showing a microfilm driving section of FIG. 1, and FIGS. 3 and 4 are readers of FIG. Perspective view of a cartridge used in a printer,
FIG. 5 is an exploded perspective view of a main part of the microfilm driving unit of FIG. 1, FIG. 6 is a side view of the main part of the microfilm driving unit of FIG. 1 viewed from the direction of arrow VI in FIG. 6 is a sectional view taken along the line VII-VII of FIG. 6, and FIGS. 8 and 9 are diagrams showing the operation of the drive arm and the auxiliary drive arm of FIG. 6 when the cartridge of FIG. 3 and FIG. 4 is used. 10 (A), (B) and (C) are main part side views showing the operation of the peeling claw of FIG. 6, respectively, and FIGS. 11 (A) and (B) are each of FIG. FIG. 12 is a perspective view and a side view of the peeling claw, FIG. 12 is an enlarged side view of the main part showing the structure of the peeling claw in FIG. 6, and FIG. 13 is a timing chart showing the operation control of the main part of the microfilm driving unit. 20: microfilm reader, 25: reel shaft, 26: cassette reel, 28: microfilm, 80: drive roller, 82: peeling claw, 84: auxiliary drive roller, 132: belt.

Claims (1)

(57) [Claims] A cassette is loaded in a state of being fitted to a reel shaft, and after loading the cassette, a microfilm take-up section is rotated on the cassette to guide a leading end of the microfilm to a peeling section, and a peeling section is provided. A microfilm reader that peels off the microfilm from the outer periphery of the microfilm winding portion to the cassette reel and draws the microfilm from the cassette, and the microfilm winding portion to the cassette with the cassette loaded. A drive roller that is in contact with the outer periphery and rotates the microfilm take-up unit on the cassette after the cassette is loaded, and the drive roller on the outer periphery of the microfilm take-up unit on the cassette with the cassette loaded is more rotated than the drive roller. Abutment at the position downstream in the rotation direction and at the position upstream in the rotation direction relative to the peeling portion. An auxiliary drive roller that rotates the microfilm take-up section on the cassette together with the drive roller, and a rotation direction of the take-up section from a position where the microfilm is wound around the auxiliary drive roller and the tip of the microfilm contacts the auxiliary drive roller. The auxiliary drive roller is rotated at a higher peripheral speed than the drive roller, and the guide belt is set from the position where the front end of the microfilm contacts the auxiliary drive roller to a position closer to the auxiliary drive roller than the tangent line. A microfilm reader for guiding along a direction inclined toward a direction approaching an outer periphery of a microfilm winding portion on a reel.