JPS62293231A - Film carrying device - Google Patents

Abstract

PURPOSE:To remove carrying load to a film due to a carrying means by providing a means for transmitting rotation in one direction to a driving shaft of the carrying means. CONSTITUTION:An oscillation arm 25 is rotated in the arrow A direction to press a carrying belt against a microfilm F. Since the carrying belt 24 is rotated in the arrow C direction by a pulley 26, the leading end of the microfilm F is carried to a separated gear 27. Consequently, the leading end of the microfilm F is taken out by the tip of the gear 27 rotated in the arrow E direction and the microfilm F is held and carried by a carrying pulley 30 and a pinch roller 2. Although the carrying speed of the microfilm F is faster than the carrying belt 24, the carrying belt 24 runs idle in the arrow C direction by a one-way clatch 32. Consequently, the microfilm F can be smoothly carried without reducing the carrying speed and damaging the film F.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a film conveyance device that automatically takes out and conveys a film such as a roll-shaped microfilm stored in a cartridge. .

(Prior Art) Conventionally, there is a microfilm extracting section of this type of film conveying device as shown in FIG. In such a conventional example, the microfilm F wound around the reel core 103 is rotatably attached to the cartridge 101. The conveyor belt 104 is rotated in the direction of arrow C by a pulley 106, and the swing arm 105 is rotated in the directions of arrows A and B to press the conveyor belt 104 against the microfilm F and separate it from it. Further, the conveyance pulley 110 is rotationally driven in the direction of the arrow mark, and rotates the separation gear 107 in the direction of the arrow mark E via the bell 108. The pinch roller 109 and the transport pulley 110 pinch and transport the microfilm F.

In the above configuration, the microfilm F is taken out and conveyed as follows. That is, the swing arm 105 is moved in the direction of arrow A, the conveyor belt 104 rotated by the pulley 106 is brought into pressure contact with the microfilm F, and the microfilm F is conveyed by the frictional force of the conveyor belt 104. Then, the leading edge of the microfilm F that has been transported to the separation gear 107 is taken out by the teeth of the separation gear 107 and fed between the pinch roller 109 and the transport pulley 110. Pinch roller 109 and conveyance pulley 11
The microfilm r sandwiched between the microfilm r and the microfilm r is conveyed by both of them and advances into the i-guide.

(The problem that the invention is trying to solve) However,
In such a conventional example, when the rotation speed of the conveyor pulley 110 is faster than the conveyor belt 104,
When the conveying means changes from 4 to the conveying pulley 110, both of them are driven at the same time, and the conveying belt (104) becomes the conveying load, so a frictional force is added between the Acrofilm F and the conveying belt 104, and as a result, There was a problem that the microfilm or the conveyor belt was damaged.

Therefore, the present invention has been made to solve the above-mentioned problems of the conventional example, and its purpose is to reduce the transport load of the roll-shaped film by the first transport means (transport belt) and the load between the two. The purpose is to prevent friction damage.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a roll-shaped film stored in a cartridge is led out by a first conveying means, and the film is transported to a predetermined position. When the film reaches the position, the film transporting device transports the film by a second transporting means faster than the first transporting means, and the film transporting device is provided with means for transmitting rotation in one direction to the drive shaft of the first transporting means. has been done.

(Function) In the present invention having the above configuration, the roll-shaped film is led out by the first conveying means, the film h is made to reach a predetermined position, and the second conveying means is faster than the first conveying means. When the film is transported by the means, the film and the first
This prevents frictional force from being applied between the conveyor and the transport means.

(Example) The present invention will be explained below based on the illustrated example. Third
The figure is a perspective view showing the main parts of a microfilm reader to which an embodiment of the film conveying device according to the present invention is applied. cartridge, 2
M1 is a motor that drives the pinch roller 2, M2 is a motor that drives the reel core 23 (the first
Roll-up film rewind monitor that rotates (as shown)
5OLI is a solenoid that brings the pinch roller 2'' into contact with the microfilm F'' via the support arm 3; 4 is a spring that moves the pinch roller 2 between the support arm 3 and the plunger 3a to separate the pinch roller 2 from the microfilm F''; A brake solenoid for the film rewind motor M2.When this brake solenoid SO, L2 does not operate, the motor M2 is rotatable.When the brake solenoid 30L2 is operated (on), the brake is fixed to the motor shaft. The plate 5 is attracted and the rotation of the motor is prevented.

6.7 is a film guide roller, 8 is a take-up reel, M3
5OL3 is a film winding motor for rotating the take-up reel 8, and a brake solenoid for the motor M3. Also, although not shown, the cartridge 1
A guide plate is provided for guiding the film along the film feeding path between the take-up reel 8 and the take-up reel 8. , 14 is a lamp that illuminates the microfilm F, 15 is a condenser lens, 16 is a projection lens that enlarges and projects the image of the film F illuminated by the lamp 14 onto a screen (not shown), and 17 is each frame of the microfilm F. This is a known mark detector that detects counting marks m provided on the sides of the .

The mark detector 17 has a photoelectric conversion element, and when the film F is fed, the light beam from the lamp 14 is interrupted by the mark m, thereby emitting a mark detection signal, and this mark detection signal is transmitted to the search device. It is counted with a counter.

FIG. 1 is a cross-sectional view of a film lead-out portion in an embodiment of the film conveying device according to the present invention, and in the same figure,
The microfilm F wound around the reel core 23 is rotatably attached to the cartridge l. The conveyor belt 24 as the first conveyor means is moved by the arrow C by the pulley 26.
The swinging arm 25 rotates in the directions of arrows A and B to press the conveyor belt 24 against the microfilm F and separate it from it. A conveyance pulley 30 serving as a second conveyance means is driven to rotate in the direction of the arrow E, and rotates the separation gear 27 in the direction of the arrow E via the belt 28. The pinch roller 2, together with the transport pulley 30, pinches and transports the microfilm F.

A one-way clutch 32 serves as a means for transmitting rotation in one direction, and the one-way clutch 32 is press-fitted into the pulley 26 so that it freely rotates counterclockwise with respect to the drive shaft 31. The pulley 26 is driven by a drive shaft 31 via a one-way clutch 32.

In the above configuration, the microfilm F is taken out and conveyed as follows. First, the swing arm 25 rotates in the direction of arrow A, and presses the conveyor belt 24 against the microfilm F. At this time, the conveyor belt? 4 is pulley 26
Since the microfilm F is rotating in the direction of arrow C, the leading end of the microfilm F is conveyed to the separation gear 27. Then, the leading edge of the microfilm F is taken out by the teeth of the separation gear 27 rotating in the direction of arrow E, and the microfilm F is pinched and transported by the transport pulley 30 and the pinch roller 2. The conveyance speed of is faster than the conveyor belt 24, but the one-way clutch 3
2 allows the conveyor belt 24 to rotate idly in the direction of the arrow C, so that it is possible to smoothly convey the microfilm F without reducing the conveyance speed and without damaging the microfilm F.

In the above embodiment, a one-way clutch is used as a means for transmitting rotation in one direction, but the present invention is not limited to this, and a ratchet or the like may be provided.

(Effects of the Invention) The film conveying device according to the present invention has the above-described configuration and operation, and since a means for transmitting rotation in one direction is provided to the drive shaft of the first conveying means, the first conveying means In addition to eliminating the transport load on the film due to
Damage to the conveyance means can be reliably prevented, and as a result, the roll-shaped film can be smoothly conveyed by the second conveyance means.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a film lead-out portion in an embodiment of the film conveying device according to the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a microfilm to which the same embodiment is applied. FIG. 4 is a perspective view showing the main parts of the leader, and FIG. 4 is a sectional view showing the lead-out part of the conventional film conveying device. Explanation of symbols 1...Cartridge 2...Pinch roller 24
... Conveyor belt (first conveyance means) 25 ... Swing arm 26 ... Pulley 27 ... Separation gear
28... Belt 30... Conveyance pulley (second conveyance means) 31... Drive shaft 32... One-way clutch (means for transmitting rotation in one direction) F... Roll-shaped micro film (roll film)

Claims (1)

[Claims] A film conveying device in which a roll-shaped film stored in a cartridge is guided out by a first conveying means, and when the film reaches a predetermined position, the film is conveyed by a second conveying means faster than the first conveying means, A film conveyance device characterized in that a means for transmitting rotation in one direction is provided to the drive shaft of the first conveyance means.