JPS5984243A - Holder for film cut end in film winding - Google Patents

Abstract

PURPOSE:To eliminate the need for a special device for feeding out a film end by preventing a cut end of a film from being wound in by utilizing the slipping and elastic force of an elastic belt. CONSTITUTION:A couple of film feeding-in rolls 4A and 4B are provided between a take-up reel 1 and a cutter 6 and the take-up reel 1 and either of the couple of rolls 4A and 4B are driven by friction through the elastic belt 8. Then, when the take-up reel 1 is released from being driven as well as the operation of the cutter 6, the elastic belt 8 recovers from expansion displacement to reverse the take-up reel 1, preventing the cut end part of the film 5 from being wound in the take-up reel.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film cut end holding device when winding up a flexible strip such as a film or an R-bar (hereinafter simply referred to as "film"). In particular, the present invention provides a film winding device configured to cut the film being wound and simultaneously release the drive of the winding reel in, for example, a camera processor for microfilm.
This invention relates to a film cut end holding device during winding, in which the cut end of the film is held near a cutting position without being wound up by a take-up reel.

Conventionally, for example, in a camera processor for producing microfilm, a camera processor is known in which a photographing section and a developing section are combined so that photographing and developing are carried out through the camera processor. In this case, since the running speed of the film in the photographing section and the running speed of the film in the developing section are different, various methods have been adopted and proposed to maintain a balance between the two.

One of the applicants has proposed that in one of these methods [& the shaded film is wound onto a take-up reel, and then
He proposed a system in which the wound film is sent to a developing section connected to the photographing section (for example, in Japanese Patent Application No. 56-20609).
No. 0). That is, this method uses two take-up reels, and the take-up reels are alternately moved back and forth between the photographing section and the developing section by appropriate means, and the developing section is moved from one take-up reel to the developing section. While the photographed film is being sent to the quadrant, the photographed film is wound onto the other take-up reel, thereby allowing photographing and development to be performed simultaneously.

By the way, in this method, the photographed film is wound around a take-up reel, and when the wound film reaches a predetermined amount, the film is cut with a cutter, and at the same time the rotation of the take-up reel is stopped. However, at this time, due to the inertia of the take-up reel, the cut end of the film gets caught up in the take-up reel. In other words, in such a system, when the film wound on the take-up reel is transferred to the developing section, and the film is rewound and sent to the developing section, as described above, the end of the film is If the film gets caught up in the reel, a special device is required to feed out the leading edge of the film in order to rewind it, especially if such an operation needs to be performed automatically in a dark place. This is because more complicated means are required. Therefore, after cutting the film, it is desired that the cut end of the film be at or near the cut position without being wound up on the take-up reel.

As a result of various studies, the inventor of the present invention has found that by adopting a simple device, after cutting the winding film, the cut end of the film can be positioned at or near the cut position without being caught in the winding reel. The present invention was successfully achieved.

That is, the present invention provides a film winding reel comprising a film winding reel and a cutter driven by a driving means, and configured to release the drive tube of the winding reel when the film being wound is cut. In the collecting device,
A pair of film feed rollers is provided between the take-up reel and the cutter, and friction is transmitted between the take-up reel and one roller of the pair of film feed rollers by an elastic belt, so that the film feed roller pair is provided between the take-up reel and the cutter. When the drive of the take-up reel is released, the elasticity gives reverse rotation to the take-up reel by restoring the elongated displacement of the belt, and prevents the cut end of the film from being rolled into the take-up reel. This is a film cut end holding device during film winding, characterized by the following features.

The present invention will be described below with reference to the drawings.

In addition, in the following explanation, for convenience, the case where a micro photographic film that has been photographed in the camera sensor is wound up will be explained as an example, but the present invention is not limited to this embodiment only, and can be applied to other than photographic film. Of course, it can also be applied to films.

FIG. 1 is an explanatory diagram showing one embodiment of the apparatus of the present invention.

In the figure, reference numeral 1 denotes a film winding reel that is frictionally driven by a suitable transmission means such as a drive belt 2, and includes a pair of film drive rollers 3, a contact roller 4A, and a drive roller 4B. The film 5 sent through the roller 4 is wound up.

A pulley connected to the shaft of the drive roller 4B and a pulley 9 connected to the shaft of the take-up reel 1 are connected to a pulley 9. Elastic elasticity such as a coil spring or rubber coil is frictionally transmitted by the pulley 8, and the pulley 9 is connected to the shaft of the take-up reel 1. The feed roller 4fd is rotated by the rotation of . In this case, the diameter of the pulley of the drive roller 4B is made smaller than the pulley 9 of the take-up reel 1, and the rotational speed v1 of the drive roller 6 and the rotational speed v2 of the take-up reel 1 are set to vl(v2). For this reason, the driving roller 4B is elastically slipping due to the belt 8 while rolling the film 5 onto the winding reel 1.
to be sent to. Therefore, the film 5 is always kept under tension. A cutter 6 is provided between the film drive roller 3 and the feed roller 4. Reference numeral 7 indicates a guide provided on the downstream side of the cutter O, which serves to feed the film 5 to the feed roller 4, and to hold the end of the film when the film 5 is cut at the position of the cutter 6, and to move it to another position. It has the function of a guide.

Reference numeral 10 indicates a circle that rotates due to the rotation of the drive belt 2, which is in contact with the drive belt 2 when the belt 2 is released from the take-up reel 1 as will be described later (the position indicated by the dotted line in FIG. 1). It is a board. Using the rotation of the disc, the take-up reel 1 is moved to another position, ie, to the film feed position I.

In this device, a system is adopted in which the cutter 6 and the drive belt 2 are operated simultaneously, and the cutter 6 cuts the film 5 and the drive (the drive of the belt 2 to the take-up reel 1 is released). ing.

Next, the operation of this device configured as above will be explained.

When the winding roller 1 is rotated to wind the film 5, and a known detection means detects that a predetermined amount of the film 5 has been wound, the drive roller 6 is stopped, and the film 5 stops running. Stop. However, power is still being transmitted to the drive belt 2, and therefore the take-up reel 1 is being rotated by friction, so the film 5 is under tension. In this state, the cutter 6 is operated to cut the film 5, and at the same time, the drive unit 2 separates the belt 2 from the take-up reel 1, and the take-up reel 1 becomes free.

As mentioned above, this device is configured so that the cutter 6 and the drive belt 2 operate simultaneously, and since the drive belt 2 is released at the start of cutting, the elongation displacement of the elastic belt 8 occurs during the cut. rotates in the opposite direction. In this way, the elastic belt 8 recovers from its elongated displacement, and its recovery force causes the take-up reel 1 to rotate in the opposite direction, thereby returning the cut end of the film 5 to the cutting position or near the cutting position.

Therefore, the cut end of the film 5 is held at the cut position without being wound onto the take-up reel 1.

If this state is maintained and the film 5 is sent to the next process such as a developing section, the operation of unwinding the film 50 can be easily performed using a simple mechanism.

Although the present invention has been explained above using the operation of microfilm in a camera sensor as an example, the present invention is not limited thereto, and can be applied to all other systems that require winding and cutting of film. can.

Note that it is also possible to avoid operating the cutter and drive belt at the same time; in this case, priority is given to releasing the drive belt.
It is best to operate the cutter after that.

As mentioned above, the present invention uses the slip and elastic force of the elastic belt to prevent the cut end of the film from being rolled up, so when sending the wound film to the next process, special without the need for a special tip feeding device.
The desired purpose can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. In the figure, 1.--Take-up reel 2. Drive route 6. Film [moving roller 6.. cutter 8.. elastic belt. Day 1, Indication of the case Patent Application No. 194513 filed in 1988 2, Name of the invention Film cut end holding device 3 during film winding, Person making the amendment Relationship to the case ``Name of patent applicant (520) Fuji Photo Film Co., Ltd. (and 1 others)
Name) Kasumigaseki Building Post Office, PO Box No. 49 a) Correct "Through development" on page 2, line 16 to "consistently with development." b) In page 2, line 16, "balance and" is corrected to "balance." C) Correct ``Make it small by 1 Y'' on the 9th line of page 6 to ``Make it small.'' d) From the 4th line of page 7, [the cantering belt...] to the 7th line of the same page, ``... is moved.'' It is a disc that rotates around a shaft 11 to which a take-up reel 1 is fixed.
Using the 100 rotations of the disk, the take-up reel 1 is moved to another position, that is, to the film feed side, via a shaft 12 attached at right angles to the shaft 11. ”. e) 1 degree after "released" on page 7, line 11 After that, the disk 10 is rotated by the cantering belt 2, but when the take-up reel 1 has moved to the predetermined position on the film feeding side, , a stopper 1 operated by a solenoid 14
5 engages with a notch or the like (not shown) provided on the edge of the disc 10 and is stopped. f) r4 on page 10, line 1. Correct +42J to "4A. 4B". 2) Correct the drawing as shown in the attached sheet. 6) As per attached sheet

Claims (1)

[Claims] (1) A film winder comprising a film winding reel and a cutter driven by a driving means, and configured to release the drive of the winding reel when the film being wound is cut. In the apparatus, a pair of film feed rollers ft is provided between the take-up reel and the cutter, and friction transmission between the take-up reel and one roller of the pair of film feed rollers is performed by an elastic belt to operate the cutter. and when the drive of the take-up reel is released, the recovery of the elongation displacement of the elastic bolt gives reverse rotation to the take-up reel;
A device for holding a cut end of the film during film winding, characterized in that the cut end of the film is prevented from being rolled into the take-up reel.