JP2726145B2 - Film cassette - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a film cassette for storing developed films.

[Conventional technology]

Generally, a film after a development process is exposed to light by a printer, and then returned to a customer together with a photographic print.

In the handling of the film after the development processing as described above, if the film becomes dirty or scratched, it will have a bad effect on the photographic print at the time of printing, so it is necessary to handle the film carefully. For protection, the film is cut into four to six frames and inserted into a negative sheet bag.

[Problems to be solved by the invention]

By the way, in handling the film after development processing,
Conventionally, since the film is processed naked, the film tends to be scratched or stained, and since it is handled naked, it is necessary to check the front and back of the film at the time of print processing, and the workability is poor was there.

Further, when cutting the film for inserting the film into the negative sheet bag, there is a risk that the film may be cut from the screen by mistake.

The present invention solves the above-mentioned disadvantages, and makes it possible to handle a film after development processing safely without dirt or scratches, and to improve workability and automation of film processing. Is a subject.

[Means for solving the problem]

In order to solve the above-mentioned problems, in the first invention, a cylindrical film storage space is formed inside a cassette body having a positioning hole formed on a side surface, and is communicated with an outer peripheral portion of the film storage space. A film guide hole that opens at the outer periphery is provided, and the film guide hole is provided with a film feed mechanism that is driven from the outside of the cassette body and transports the film inserted through the film guide hole in the length direction. It is.

Further, in the second invention, a pair of cylindrical film spaces are provided inside both ends of a cassette body having a positioning hole formed on a side surface, and the pair of film storage spaces communicate with each other through a film guide hole. A film entrance is provided in the upper guide plate of the hole, and an exposure window is formed in the lower guide plate of the film guide hole so as to face the film entrance, and the film guide is driven from outside the cassette body on both sides of the exposure window. Thus, a configuration was adopted in which a film feeding mechanism for transferring the film inserted through the hole in the length direction was provided.

Here, in the first invention and the second invention, the film feed mechanism has a pair of sprockets that engage with perforations provided on both sides of the film,
A ratchet wheel is mounted coaxially with the sprocket, a detection roller provided on the front side of the ratchet wheel is rotatably mounted on one end of a roller arm, and the other end of the roller arm is rotatably connected to the cassette body. The roller arm is provided with elasticity for bringing the detection roller into contact with the upper surface of the film guide hole, and the roller arm is engaged with the outer peripheral teeth of the ratchet wheel when the detection roller is in contact with the upper surface of the film guide hole. In addition, a configuration in which a pawl for preventing the ratchet wheel from rotating can be used.

Further, a drive roller may be used instead of the sprocket of the above-mentioned film feed mechanism, and a film feed mechanism in which a pressing roller is brought into contact with an upper peripheral portion of the drive roller may be used.

In a film cassette using a driving roller, a configuration is adopted in which a film guide groove is detachably attached so that films having different widths can be stored.

In the first invention and the second invention, in order to securely wind the film in a roll shape in the film storage space, a take-up shaft is provided in the film storage space, and a press roller for pressing the film against the outer periphery of the take-up shaft. It is preferable to transmit the rotation of the film feeding mechanism to the winding shaft and rotate the film feeding mechanism.

Attaching a recording medium that can record and read various information to the cassette body so that the film stored in the film storage space can be easily managed and the final print and the reprint can have the same finish. is there.

[Action]

When storing the film after the development processing in the cassette according to the first invention, insert the film into the film guide hole, drive the film feed mechanism from the outside, transfer the film toward the film storage space, The film is wound into a roll in the film storage space.

When printing the stored film, the film feed mechanism is driven in the reverse direction to draw the roll-shaped film in the film storage space from the film guide hole to the outside.

When storing the film after the development processing in the cassette according to the second invention, the film is inserted into the film guide hole from the film inlet, and the film is transported by the operation of the film feeding mechanism arranged in the insertion direction. The film is fed into a film storage space provided on the front side in the direction, and is wound in a roll shape in the film storage space.

When printing after storage, set the cassette in the exposure section of the printer and drive each of the film feed mechanisms to intermittently move the film stored in the film storage space one frame at a time toward the other film storage space. When the film is wound in a roll shape in the other film storage space and each frame of the film stops at the exposure window, light is irradiated from below.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 show a first embodiment of a cassette according to the present invention.

As shown in the figure, the cassette body 1 includes a case 2 and a cover 3 that covers the upper surface of the case 2. The case 2 has an arc-shaped plate 6 at an end of a guide plate 5 having a pair of side plates 4 on both sides. And a positioning hole 7 is formed in the side plate 4.

A tubular portion 8 is formed at an end of the arc-shaped plate 6, and an end of the cover 3 is rotatably supported by a pin 9 supported by the tubular portion 8.

The cover 3 has an arcuate portion 11 which forms a cylindrical film storage space 10 with the arcuate plate 6, and a flat guide plate portion facing the guide plate 5 of the case 2 at an end of the arcuate portion 11.
A film guide hole 13 communicating with the film storage space 10 is formed between the guide plate portion 12 and the guide plate 5 of the case 2.

The film guide hole 13 is provided with a film feed mechanism 20 for transferring the film inserted into the film guide hole 13.

The film feed mechanism 20 comprises a pair of sprockets 21 which can be engaged with the perforations a on both sides of the film F shown in FIG. 1, and the sprockets 21 are incorporated into openings 22 formed in the guide plate 5 of the case 2. I have.

The shaft 23 supporting the sprocket 21 is attached to the side plate 4 of the case 2.
Is rotatably supported by being inserted into a hole 24 formed therein, and an engagement portion 25 for a drive shaft of an external drive device is provided on one end surface thereof.

Here, the engagement portion 25 is shown as having a square hole,
An appropriate shape is adopted according to the end shape of the drive shaft. For example, when a square hole is formed at the end of the drive shaft, the engaging portion 25 is a square axis.

A detection roller 26 is provided on the front side of the sprocket 21. An end of a roller arm 27 that rotatably supports the detection roller 26 is connected to a case 2 via an elastic hinge 28.
The detection roller 26 is connected to the arcuate plate 6 of the above-described manner, and the elasticity of the hinge 28 causes the detection roller 26 to form a depression 29 formed on the upper surface of the film guide hole 13.
Is pressed against.

The support of the roller arm 27 is not limited to the illustrated example,
For example, the end of the roller arm 27 may be rotatably supported by a pin, and the elasticity of a spring may be applied to the roller arm 27 to press the detection roller 26 against the depression 29.

The roller arm 27 is provided with a pawl 31 which can be engaged with a ratchet wheel 30 attached to the shaft 23 of the sprocket 21. The pawl 31 is provided when the detection roller 26 is fitted in the recess 29. The shaft 23 is prevented from rotating by engaging with the teeth on the outer periphery of the shaft.

The film cassette shown in the first embodiment has the above-mentioned structure. When storing the film after the development processing, the film F is inserted into the film guide hole 13 and the film F is inserted.
After the film F is inserted until the tip of the sprocket 21 passes through the position of the sprocket 21, the shaft 23 of the sprocket 21 is rotated.

By inserting the film F, the detection roller 26 moves downward, the roller arm 27 swings downward, and the pawl 31 separates from the ratchet wheel 30.

Therefore, the shaft 23 is released from the rotation stop and can be rotated from the outside.

Then, the rotational torque is transmitted to the shaft 23 and the sprocket 21
Is rotated in the direction of the arrow in FIG. 2, whereby the film F is fed toward the film storage space 10 by engagement of the sprocket 21 and the perforation a, and is wound in a spiral shape in the film storage space 10. Can be

When the rear end of the film F passes the position of the detection roller 26, the detection roller 26 moves upward by the elastic force given to the roller arm 27, and the pawl 31 engages with the ratchet wheel 30 to rotate around the shaft 23. Then, the winding of the film F is completed.

As described above, when the rear end of the film F passes through the detection roller 26, the shaft 23 is prevented from rotating, so that the winding of the rear end of the film F can be prevented, and the perforation a at the rear end of the film F can be prevented. Can be held in a state where the sprocket 21 is engaged.

Therefore, the film F in the film storage space 10 can be pulled out by rotating the sprocket 21 in the opposite direction.

FIG. 3 shows an example of an external drive device 40 for driving the feed mechanism 20 of the film cassette. This external drive device 40
A drive shaft 41 connectable to the shaft 23 of the sprocket 21 is slidably provided in the axial direction, and a gear is provided outside the drive shaft 41.
42 is mounted so that it can rotate and slide freely.
A friction plate 44 is incorporated between the torque transmission plate 43 slidably mounted on the outside of the drive shaft 41 and the torque transmission plate 43.
Friction plate by spring 45 incorporated between
While pressing against the drive shaft 41, an axial moving force is applied to the drive shaft 41, and the rotation of the gear 42 driven by the motor 46 is transmitted to the drive shaft 41 via the friction plate 44 and the torque transmission plate 43, and is applied to the drive shaft 41. When the load increases, slippage occurs between the friction plate 44 and the torque transmission plate 43 to interrupt the torque transmission.

By providing the driving device 40 and the positioning pins to be inserted into the positioning holes 7 of the cassette holder in a film processing apparatus such as an automatic film developing machine, the film is wound on the cassette holder and the film is sent out from the cassette holder. Can be performed automatically.

FIG. 4 shows an example in which a cassette table 52 is mounted below a film outlet 51 of the automatic film developing machine 50, the driving device 40 is incorporated in the cassette table 52, and positioning pins 53 are provided on the cassette table 52. Show.

By mounting the film cassette A ₁ on the cassette table 52 and rotating the drive shaft 41, the developed film sent from the film outlet 51 is processed by the film cassette A _1.
Can be wound up.

FIG. 5 shows a usage example in which the driving device 40 shown in FIG. 3 is incorporated in a cassette mounting portion 61 of a negative mask 60 which is detachably mounted to an exposure portion of a printer, and positioning pins 62 are provided in the cassette mounting portion 61. Is shown.

By rotating the drive shaft 41 is attached a film cassette A ₁ in the cassette mounting portion 61, a film cassette
It can send a wound film F in the A ₁ from the film inlet 63 provided in the negative mask 60 downward of the exposure window 64. Therefore, by attaching the negative mask 60 on the exposed portion of the printer can automatically print processing of the film in the film cassette A _1.

Incidentally, in order to stabilize the support of the cassette holder A _1,
A concave portion 32 is provided on the outer periphery of the cassette body 1, while an elastic plate 33 is attached to the cassette mounting table 52 and the negative mask 60, and the bent portion 34 at the tip of the elastic plate 33 is engaged with the engaging concave portion 32. ing.

6 and 7 show a second embodiment of the film cassette according to the present invention.

In the second embodiment, a take-up shaft 35 and a press roller 36 for pressing the film F on the outer periphery of the take-up shaft 35 are incorporated in the film storage space 10.
The end of a roller arm 37 supporting the roller is connected to the inner periphery of a window 38 formed in the cassette body 1 via an elastic hinge 39, and the pressing roller 36 is attached to the outer periphery of the winding shaft 35 by the elasticity of the hinge 39. It is pressed.

Further, the rotation of the shaft 23 of the sprocket 21 is
Is transmitted to the winding shaft 35 via the.

Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

As in the second embodiment, by incorporating the winding shaft 35 to which the rotation of the sprocket 21 is transmitted into the film storage space 10, the film F fed into the film storage space 10 by the film feed mechanism 20 can be wound. And can be wound up reliably.

In the configuration in which the winding shaft 35 is incorporated in the film storage space 10 as in the second embodiment, the winding shaft 35 is rotated by the external driving device 40, and the rotation of the winding shaft 35 is performed. May be transmitted to the shaft 23 of the sprocket 21.

8 and 9 show a third embodiment of the film cassette according to the present invention.

In the third embodiment, a drive roller 70 is used in place of the sprocket 21 of the film feed mechanism 20 in the first embodiment, and a pressing roller 71 that is in contact with the outer periphery of the drive roller 70 is formed on the cover 3. The drive roller 70 is externally driven by being rotatably mounted in the hole 72, and the film F is inserted between the drive roller 70 and the pressing roller 71.
Is to be transported.

Further, a pair of grooves 73 long in the film transport direction are formed on both upper and lower sides of the film guide hole 13, and a film guide 74 for guiding the movement of the film F is detachably attached to each groove 73.

Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and description thereof will be omitted.

As in the third embodiment, the film F is moved using the drive roller 70, and the film guide 74 is detachably mounted, so that films having different widths can be wound and rewound.

10 and 11 show a fourth embodiment of the film cassette according to the present invention.

In the fourth embodiment, a pair of film storage spaces 8 are provided at both ends of a cassette body 80 having a pair of side plates 81 on both sides, and a pair of positioning holes 82 formed at both ends of each side plate 81.
3, 83 are formed, and the film storage spaces 83, 83 are communicated with each other through a film guide hole 84.

A film inlet 86 is formed in the upper guide plate 85 of the film guide hole 84, and the film inlet 86 is formed in the lower guide plate 87.
An exposure window 88 is provided opposite to the
Pair of film feed mechanisms having the same configuration as that of the embodiment of FIG.
There are 20.

Further, a winding shaft 35 and a press roller 36 are incorporated in each of the film storage spaces 83, 83, and the winding shaft 35 is rotated synchronously with the sprocket 21 via a gear transmission mechanism X shown in FIG. I have.

Film cassette A ₂ consisting of the fourth embodiment, insert the film F after development from the film inlet 86 to the film guide hole 84, in one direction by the driving of the film feeding mechanism 20 which is driving the film F from the outside The take-up shaft in the film storage space 83 located on the front side in the moving direction of the feed
Make it roll at 35.

FIGS. 12 to 14 show a printer for performing a printing process on the film wound by the film cassette, and a cassette support table 91 is attached to an exposure section 90 of the printer.

The cassette support base 91 is provided with a pair of drive shafts 92, 92 and a pair of positioning pins 93, 93, and each drive shaft 92 is rotationally driven in the same direction by the drive device 40 shown in FIG.

In order to print the film in the film cassette with the above-mentioned printer, the film cassette is set on the cassette support table 91, and a pair of film feed mechanisms 20 are simultaneously operated by driving the drive shafts 92, 92, so that the film storage space 83 is formed.
The film F stored therein is intermittently fed one frame at a time toward the other film storage space 83. Then, the film F is sequentially wound by the winding shaft 35 in the other film storage space 83, and each time the film F is stopped, light is applied to the film F from below the exposure window 88 and projected upward from the film entrance 86. is the process for printing, by exposure, the interior of the printing paper of the printing paper compartment 96 provided a negative image on the film cassette a _2.

Reference numeral 94 denotes a film holding mechanism for pressing the film F stopped below the film inlet 86 against the upper surface of the lower guide plate 87. The film holding mechanism 94 is vertically swung by a solenoid 95, and is moved downward. Presses the film F during swinging.

FIG. 15 shows a fifth embodiment of the film cassette according to the present invention.

In the fifth embodiment, a recording medium 100 such as a magnetic tape or a bar code label
Is affixed. This recording medium 100 may be attached to the cassette body 80 of the film cassette shown in FIG.

By providing the recording medium 100 in the cassette body 1 as described above, it is possible to write and read various data such as information at the time of receiving a DP and printing conditions on the recording medium 100. The processing is simplified, and the finish at the time of the first print and the reprint can be made the same.

〔The invention's effect〕

Since the present invention is configured as described above, the following effects can be obtained.

According to the film cassette described in claims (1) and (2), the film after the development processing is inserted into the film guide hole and the film feeding mechanism is operated to wind the film in the film storage space. It is possible to prevent the film from being stained and scratched, and to store one film as it is, eliminating the need to cut the film and insert it into a negative sheet bag. be able to.

Further, since the film can be transported by the operation of the film feeding mechanism, the handling of the film is easy, and the film processing such as winding and printing of the film after the development processing can be automated.

Further, according to the film cassette of the present invention, since the exposure window is provided between the pair of film storage spaces, the film print processing can be performed with the film stored in the film cassette. It is possible to reliably prevent the film from being stained or damaged.

According to the film cassettes described in claims (3) and (4), the winding of the rear end of the film can be prevented, so that the film wound into the film storage space by the operation of the film feeding mechanism. It can be taken out from the film storage space without fail.

According to the film cassette described in claim (5), films having different widths can be wound by attaching and detaching the film guide.

According to the film cassette described in claim (6), since the film is wound around the outer periphery of the winding shaft, the film can be reliably wound in the film storage space.

According to the film cassette of the present invention, since various data can be recorded on the recording medium, the management of the film becomes easy, and the work such as the print processing can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a film cassette according to the present invention, FIG. 2 is a vertical sectional front view of the same, and FIG. 3 is an example of an external driving device for driving a film feed mechanism of the same. 4 and 5 are perspective views showing an example of use of the above-mentioned external drive device, FIG. 6 is a longitudinal sectional front view showing a second embodiment of the film cassette according to the present invention, and FIG.
FIG. 8 is a sectional view of the same, FIG. 8 is a longitudinal sectional front view showing a third embodiment of the film cassette according to the present invention, FIG. 9 is a perspective view of the same, and FIG. FIG. 11 is a perspective view showing a fourth embodiment, FIG. 11 is a vertical sectional front view of the same, FIG. 12 is a perspective view of a printer for printing and processing films in the film cassette shown in FIG. 10, and FIG. FIG. 14 is a perspective view of a mounting table, FIG. 14 is a perspective view of a state where a film cassette is set on the cassette mounting table, and FIG.
The figure is a perspective view showing a fifth embodiment of the film cassette according to the present invention. 1, 80: cassette body, 4: side plate, 7: positioning hole, 10, 83: film storage space, 13, 84: film guide hole, 20: film feed mechanism, 21: sprocket, 23 … Shaft, 25… engagement part, 26… detection roller, 27… roller arm, 30… ratchet wheel, 31… claw, 35… winding shaft, 36… presser roller, 70… Driving roller, 71 Press roller, 74 Film guide, 100 Recording medium.

Claims (7)

(57) [Claims] 1. A cassette body having a positioning hole formed on a side surface thereof, a cylindrical film storage space, and a film guide hole communicating with an outer peripheral portion of the film storage space and opening at an outer periphery of the cassette body. A film cassette provided with a film feed mechanism which is driven from the outside of the cassette body in the film guide hole and transports the film inserted in the film guide hole in the length direction. 2. A pair of cylindrical film spaces are provided inside both ends of a cassette body having a positioning hole formed in a side surface, and the pair of film storage spaces communicate with each other through a film guide hole.
The upper guide plate of the film guide hole is provided with a film entrance, and the lower guide plate of the film guide hole is formed with an exposure window facing the film entrance, and is driven from outside the cassette body on both sides of the exposure window. A film cassette provided with a film feed mechanism for transferring a film inserted through a film guide hole in a longitudinal direction. 3. The film cassette according to claim 1, wherein the film feed mechanism comprises a pair of sprockets which engage with perforations provided on both sides of the film, and are coaxial with the sprocket. A ratchet wheel is mounted, a detection roller provided on the front side of the ratchet wheel is rotatably mounted on one end of the roller arm, and the other end of the roller arm is rotatably connected to the cassette body. Is applied to the upper surface of the film guide hole, and the roller arm is rotated around the ratchet wheel by engaging the teeth on the outer periphery of the ratchet wheel when the detection roller is in contact with the upper surface of the film guide hole. A film cassette with claws to stop. 4. The film cassette according to claim 3, wherein a driving roller is used in place of the sprocket, and a pressing roller is brought into contact with an upper peripheral portion of the driving roller. 5. A film cassette according to claim 4, wherein a film guide for guiding the movement of the film is detachably attached to both sides of the film guide hole. 6. A film cassette according to claim 1, wherein a winding shaft and a pressing roller for pressing a film on the outer periphery of the winding shaft are incorporated in the film storage space, and the winding shaft is provided. And a transmission mechanism for transmitting the rotation of the film feed mechanism to the side of the cassette body. 7. The film cassette according to claim 1, wherein a recording medium is attached to an outer periphery of the cassette body.