JP2666658B2 - Photo film take-up device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film take-up device having a function of detecting whether a photographic film after photographing is wound forward or reverse in a cartridge.

[0002]

2. Description of the Related Art Generally, in automatic development of photographic film,
A film splicer destroys a large number of patrone outer cylinders supplied, takes out the undeveloped film wound on the internal spool, connects the film ends taken together, and automatically develops the connected film connector. The developer is carried into the apparatus and is continuously developed.

[0003] By the way, the photographed patrone supplied to the film splicer is often collected in a state where the leading end (bello) portion of the film protrudes from the insertion opening of the patrone, so that the film splicer has been conventionally used. The supplied photographed patrone is, for example, shown in FIG. 8, for example, a spool rotating shaft 3 which engages with a spool shaft 2 of a patrone P provided on an outer surface of a case 1 of a film splicer.
The spool shaft 2 is rotated in the normal winding direction (counterclockwise as viewed from the direction of the arrow in the figure) by the film winding device including the winding shaft 4 and the winding motor 4 connected to the rotation shaft 3, and The leading edge of the film is being wound. In the figure, reference numeral 5 denotes a patrone inlet of the film splicer.

[0004]

However, in the film winding device shown in FIG. 8, the film may be damaged during the winding process.

In most cases, the patrone P
The film inside is wound around the spool shaft 2 in a normal winding state with the emulsion surface inside, so that there is no problem even if the winding process is performed. In some cases, the film is wound in a reverse winding state with the emulsion surface on the outside. In this case, when the winding process is performed, the film in the patrone P becomes, as shown in FIG.
At first, the film 19 which spreads in the patrone P and the reverse winding is eliminated is wound forward, but at this time, the spread film 19 comes into contact with the inner wall of the patrone P, and an excessive torque is applied to the film 19, so that the film 19 Spool shaft 2
There is a problem that it is bent near the connection with the cable.

As one solution to this problem, for example, when the film 19 is wound, the torque may be adjusted to a small value so as not to apply an excessive torque to the film. Every,
In addition, the number of photographed films (length) differs (see FIG. 4), and in the above-described apparatus which has to process a large number of patrones P mixed in by each company, it corresponds to each patrone P which performs a winding process. It is difficult to adjust the torque.

Therefore, an object of the present invention is to perform a winding process for each patrone with an optimum forward winding torque, and if there is a patrone in which a film is reversely wound during the process, the reversely wound patrone can be eliminated, for example. Thus, the film of the cartridge is not damaged.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, there is provided film winding means for engaging with a spool shaft of a patrone held by a patrone holder and rotating the spool shaft. Reading means for reading code data indicating a maker and a film type written on the held patrone; and, based on the code data read by the reading means, a normal winding torque of the film of the winding means is set to a predetermined film type. Processing means for calculating from the data of the positive winding torque for each, driving means for driving the winding means in accordance with the torque data calculated by the processing means, and generating a torque of the data in the winding means; The winding state of the winding means is detected, and the winding is performed according to the detected winding state. Film in Ronne is had a structure in which a detection means for determining whether the wound in Seimaki or reverse winding.

The code data indicating the film type is, for example, a magazine bar code or a DX code written on the surface of the patrone outer cylinder.

[0010] In addition, the photographic film winding device described above,
It is also possible to provide a notifying means for notifying whether the film in the patrone determined by the detecting means is forward or reverse.

[0011]

In the photographic film take-up device constructed as described above, code data of a maker and a film type is read from the patrone held in the patrone holder, and the read code data is read by the maker of the film and the number of photographed films. The spool shaft is rotated by the determined optimum winding torque, and the film is wound into the cartridge. Note that when the spool shaft is rotated in this manner, a difference of 5 to 10 times occurs in the winding torque depending on whether the film in the patrone is wound forward or reverse. By detecting the torque difference, whether the film in the cartridge is forward or reverse is discriminated.

That is, for example, when the film is reverse-wound, the reverse winding of the film is canceled by the normal rotation of the spool shaft, and when the film is changed from the reverse winding to the normal winding, the film is reversely wound to bend. Lack of torque,
The rotation of the spool shaft changes because the film cannot be wound forward. For this reason, a change in the rotation of the spool shaft is detected to discriminate whether the film in the cartridge is a normal winding or a reverse winding.

At this time, since the forward winding torque is 1/5 to 1/10 of the reverse winding torque required to bend and normally wind the reverse-wound film, The film will not be damaged when rotation stops.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The photographic film take-up device of this embodiment is shown in FIG.
As shown in FIG. 3 to FIG. 3, the apparatus includes a winding unit 10 and a control unit 11.

The take-up unit 10 includes a cartridge holder 12 provided on the outer surface of the case 1 of the film splicer and a bar code reader 1 attached to the holder 12.
3 and a spool rotating shaft 3 penetrating the wall surface of the film splicer and projecting to the center in the holder 12 as a film winding means of the cartridge P held by the holder 12, and a winding connected to the rotating shaft 3. DC motor 4 for taking. Further, it comprises a rotation detector 14 provided on the rotating shaft 3.

As shown in FIG. 2, the patrone holder 12 has a side wall that covers the patrone P, and an input port 15 is formed at one end of the side wall, and the other end is in contact with the wall surface of the film splicer. ing. A limit switch 16 is attached to a wall surface inside the holder 12, and the limit switch 16 is activated when a patrone P is inserted into the holder 12, and the limit switch 16 is activated by the operation.
The presence or absence of the patrone P is output to the control unit 11.

The side wall of the holder 12 is provided with a notch 17 for preventing the film from sticking and a bar code reading hole 1.
8 are formed. The bar code reading hole 18
The bar code detector 1 of the bar code reader 13
3 'is facing, and as shown in FIG.
Patrone 9 so that 9 is inserted into notch 17
Is inserted into the bar code reading hole 18, the magazine bar code of the cartridge P and DX
The code is positioned so that it is positioned. At that time, the patrone P is held and fixed by the side wall of the holder 12.

An engagement groove 2 is provided on an end face of the spool rotation shaft 3.
0 is formed. As described above, when the cartridge P is loaded into the holder 12, the engagement groove 20 is engaged with the spool shaft 2 of the cartridge P, and the spool shaft 2 is rotated by the motor 4.

On the other hand, the rotation detector 14 provided on the spool rotating shaft 3 is provided with a light shielding plate 2 provided on the spool rotating shaft 3.
1 and a photo interrupter 22. A slit is formed in the light-shielding plate 21, and the slit shields the detection light of the photo-interrupter 22 with the rotation of the spool rotation shaft 3 to output a pulse signal. The waveform-shaped pulse train signal that the rotation detector 14 detects and outputs with the rotation of the spool rotation shaft 3 is output to the control unit 11.

As shown in FIG. 3, the control section 11 comprises a processing means 30, a driving means 31, and a detection means 32 to which the output of the rotation detector 14 is inputted.

The processing means 30 is constituted by, for example, a microcomputer (a microcomputer for controlling a film splicer may be used).

The microcomputer is provided with data representing typical values of forward winding torque and reverse winding torque with respect to the number of film shots of films manufactured by film companies as shown in FIG. 4, for example. The microcomputer calculates forward winding torque data based on the magazine bar code or DX code of the patrone P read by the bar code reading device 13 and converts the calculated data into output voltage data to the driving means 31. According to the data table, the winding D
Create voltage data according to the generated torque of the C motor 4,
The created data is output to the driving means 31.

The driving means 31 comprises, for example, a D / A converter and a DC motor control circuit connected to the D / A converter. The D / A converter converts voltage data output from the microcomputer into analog data. The DC motor control circuit converts the analog signal into a DC signal for winding.
The output voltage to the C motor 4 is controlled to
Then, the same torque as the torque data output by the microcomputer is output.

The detection means 32 is, for example, a retriggerable one-shot multivibrator or the output of the rotation detector 14 is input to a processing means 30 (for example, an interrupt input), and is controlled by a timer circuit formed by a microcomputer. It detects the extension of the period of the pulse train signal output from the rotation detector 14 or the presence or absence of the pulse train signal output, and outputs a discrimination signal indicating that the rotation speed of the spool rotating shaft 3 has decreased or stopped.
This discrimination signal is sent to the notifying means 33 connected to the detecting means 32.
Is output to

The notifying means 33 has, for example, a light emitting device, a sound generating device, etc., and notifies the result of the discrimination by blinking light, a buzzer, a chime, a sound or the like.

This embodiment is configured as described above, and its operation will be described below with reference to the flowchart of FIG.

Now, when the photographed patrone P is loaded into the patrone holder 12 of this apparatus, the outer cylinder of the loaded patrone P is moved to the limit switch 1 in the holder 12.
6 to operate the apparatus (processing "100" and subsequent processing are omitted). Then, the magazine barcode and DX code of the patrone P held in the holder 12 are detected by the barcode reading device 13, and the detected code data is read into the processing means 30 (10).
1). The data read in this way is compared with the data table shown in FIG. 4 by the processing means 30, and the film maker and film length of the cartridge P are specified (102). Then, the required torque for forward winding is calculated from the table (103), and the data is output to the driving means 31 to rotate the motor 4 at the required torque (10).
4). This rotation is monitored by the detecting means 32. Until the winding of the film 19 is completed (for example, until the torque is reduced and the increase in the number of rotations is detected), unless the rotation of the spool rotation shaft 3 decreases or stops, the rotation is not detected. (10
5) For example, the fact that the film 19 of the cartridge P is the normal winding and the winding process is completed is notified by the notifying means (106), and the process is ended (107).

On the other hand, for example, the spool shaft 2 of the patrone P
In addition, since the film 19 is reversely wound, as shown in FIG. 6, the film comes into contact with the inner wall of the cartridge P in an attempt to bend, and the rotation of the spool rotation shaft 3 is reduced during winding because of insufficient torque. When a rotation abnormality such as a stop is detected (105), the abnormality is first reported by the notification means 33 (108). And then,
The abnormality which is reported is, for example, as shown in FIG.
9 If the rotation is abnormal due to a cause other than reverse winding of the film, such as when the leading end is stuck, the process is continued (109), and the leading end of the film is extended (abnormal processing of the leading end of the film) (110). ), And again the above processing 101 to 1
08 to determine the reverse winding. On the other hand, when the occurrence of the rotation speed abnormality is caused by reverse winding of the film, (1)
09), the process ends (107).

As described above, this apparatus can detect whether the film 19 in the patrone P is normal or reverse irrespective of the maker of the patrone P and the film length (the number of shots).

In the embodiment, a rotation detector using light such as a light shielding plate and a photo interrupter is used, but other than this, a rotation detector using a magnetic field such as a magnet and a Hall IC is used. It can also be.

Furthermore, without using the rotation detector, for example,
The control circuit of the drive means may be provided with a back electromotive voltage detection circuit of the DC motor, and the above-described determination may be made based on the output of the detection circuit.

Further, in the embodiment, the case where the present apparatus is provided on the film splicer has been described. However, the present apparatus can be housed in a case and taken up by a single photographic film winding apparatus in addition to being provided on the film splicer. It can also be used as a device.

[0033]

According to the present invention, a magazine bar code and a DX code written on a patrone are read, a different winding torque is calculated for each maker and a type of film, and the film is wound with the calculated optimum torque. Can be taken. Therefore, during the winding process, not only the film wound forward on the spool shaft but also the film wound reversely on the spool shaft is not damaged by excessive winding torque.

At the same time, it is possible to detect and notify whether the photographed film wound in the patrone is a normal winding or a reverse winding, and to inform the film before feeding the patrone into the film splicer. The patrone that has been reverse-wound can be removed.

For this reason, in the film splicer, the forward-wound film and the reverse-wound film are connected, and development unevenness and the like caused by the connection of the two emulsion surfaces in different directions can be prevented. . As a result, the efficiency of the connection processing can be improved without the need for reworking such a connection error.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of an embodiment.

FIG. 2 is a sectional view taken along line aa of FIG. 1;

FIG. 3 is a block diagram of an embodiment.

FIG. 4 is a table showing film types versus forward and reverse winding torque for each maker.

FIG. 5 is a flowchart of an embodiment.

FIG. 6 is an operation diagram

FIG. 7 is an operation diagram

FIG. 8 is a partial cross-sectional view of a conventional example.

[Explanation of symbols]

 Reference Signs List 2 spool shaft 3 spool rotating shaft 4 DC motor for winding 12 patrone holder 13 barcode reader 14 rotation detector 20 engagement groove 30 processing means 31 driving means 32 detecting means P patrone

Claims (2)

(57) [Claims] 1. A film take-up means which engages with a spool shaft of a patrone held by a patrone holder and rotates the spool shaft, and code data indicating a maker and a film type written on the patrone held by the holder. Reading means for reading, and a processing means for calculating the positive winding torque of the film of the winding means from the code data read by the reading means, from the data of the positive winding torque for each preset film type, A driving unit that drives the winding unit in accordance with the torque data calculated by the processing unit and generates a torque of the data in the winding unit; a winding state of the winding unit is detected; Whether the film in the cartridge is wound forward or reverse depending on the condition Photographic film take-up device provided with a detecting means for determining whether the photographic film has been detected. 2. The photographic film take-up device according to claim 1, further comprising a notifying means for notifying whether the film in the cartridge determined by said detecting means is forward or reverse. Winding device.