JPH03132742A - Film guiding device for photographic printing machine - Google Patents

Abstract

PURPOSE:To prevent dust from sticking on a film without making the film droop by using a 1st guide roller which is arranged above a working table and a 2nd guide roller which is arranged adjacently to the working table, and holding the film in a looped shape above the working table. CONSTITUTION:When the film is set on the photographic printing machine 10, its tip passes on a guide roller 32, passes between a supporting roller 39 and a guiding roller 37, and then inserted into a film carrier 17. Those guiding rollers 32 and 37 loop the film 20, so the tail end part of the film 20 never droops on the floor. Frame feed is instructed by operation an operation key 18 after the film 20 is set, and then the motor incorporated in the film carrier 17 rotates to carry the film 20. The film 20 is sent toward the film carrier 17 under the guidance of the guiding rollers 32 and 37. Consequently, the film 20 is not brought into contact with the top of the working table 11, so neither dust sticking nor flawing is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a film guide device used in a photographic printing machine for guiding a film toward a film carrier while keeping it in a loop shape.

[Conventional technology]

A photo printing machine for minilabs has an exposure section, a developing section, etc. built into a compact body, and a work table is arranged in the front, on which a film carrier is placed. When printing photographs, a roll of film is placed on a work table and its leading end is inserted into a film carrier. The film is then transferred one frame at a time toward the film carrier, and each frame is sequentially printed onto photographic paper.

[Problem to be solved by the invention]

However, in the photoprinting machine described above, the width of the work table is smaller than the length of one roll of film, so when the leading end of the film is set in the film carrier,
The rear end of the film protrudes from the work table and comes into contact with the floor. For this reason, in conventional photo printing machines, the film moves on the floor, causing problems such as scratches and dust on the film surface.

Furthermore, since the film moves while rubbing against the corners of the work table, there is a risk of scratches on the film surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a film guide device for a photoprinting machine that prevents scratches and dust from sticking to the film.

[Means to solve the problem]

To achieve the above object, the film guide device of the present invention includes a first guide roller disposed above the side of the work table for hanging a part of the film protruding from the film carrier; It consists of a second guide roller that is placed below the guide roller and guides the film that has passed therethrough toward the film carrier, and a holding means that holds these guide rollers and is attached to the photoprinting machine. It is.

Another invention is that a film receiving means is provided on the outside of the second guide roller, and means is added to catch the end of the film that has fallen off the first guide roller, so that the film does not come into contact with the corner of the work table. It is.

[Effect]

When setting a single film on the film carrier, first the film is hung on the first guide roller located above the work table.

Next, the leading edge of the film is passed between the second guide roller and the film receiving means, and then set on the film carrier. In this state, since the film is suspended in a loop by the first guide roller, the rear end of the film does not hang down to the floor or come into contact with the corners of the work table.

As the printing of frames progresses, the trailing edge of the film falls off the first guide roller, but in this case, the film receiving means placed next to the second guide roller catches it.
Make sure the edges of the film do not touch the corners of the work table.

Embodiments of the present invention will be described in detail below with reference to the drawings.

[Example] In FIGS. 1 to 3, a photo printing machine 10 includes a work table 11, a light source section 12 attached to the lower part of the work table 11, an exposure section 13 containing photographic paper, and an exposure section 13. It is composed of a developing section 14 that processes finished photographic paper. On the work table 11 is a base section 15.
and the film holding part 1 attached to this so that it can be raised freely.
A film carrier 17 consisting of 6 is placed.

Note that reference numeral 18 is an operation key.

In order to prevent the film 20 from hanging on the floor or rubbing against the corners of the work table 11, a film guide device 21 is attached to the film supply side of the film carrier 17. This film guide device 21 is provided with two joints 22 and 23 having a click mechanism depending on the length of the film 20 or for retracting it to a position where it does not get in the way. The joint 22 is 2
Consisting of two rings 22a and 22b, one ring 2
A click ball 23 and a spring 24 are attached to ring 2a, and a plurality of holes 25 into which click balls 23 fit are formed in the other ring 22b. In addition, the ring 22a
A shaft 26 is fixedly attached to the photoprinting machine 10, and the shaft 26 is removably inserted into a holder 27 attached to the front plate 10a of the photoprinting machine 10.

The ring 22b of the joint 22 and the ring 23a of the joint 23 are connected via an arm 30.

Further, a shaft 31 is attached to the ring 23b of the joint 23, and a guide roller 32 with a flange is rotatably attached to the shaft 31. Note that the reference numeral 33 is a finger rest for moving the film guide device 21.

Further, a downwardly extending arm 35 is fixed to the joint 23b, and a guide roller 37 is attached to a shaft 36 provided integrally with the arm 35. Also, arm 3
A support roller 39 is attached to a shaft 38 that is integral with the guide roller 5, and is configured to catch the end of the film that has fallen off the guide roller 32.

Next, the operation of the above embodiment will be explained. Since the photoprinting machine 10 is a small-scale device, films are set one by one. When setting this film, the leading edge is passed over the guide roller 32, then between the support roller 39 and the guide roller 37, and then placed on the film carrier.
7.

Since the film 20 is formed into a loop by these guide rollers 32, 37, the rear end of the film 20 does not hang down to the floor as in the conventional case.

After setting the film 20, when the operation key 18 is operated to instruct frame advance, the motor built in the film carrier 17 rotates and the film 20 is transported. This film 20 is transported towards the film carrier 17 while being guided by guide rollers 32,37. Therefore, since the film 20 does not come into contact with the top of the work table 11, there is no fear that dust will adhere to it or that it will get scratched.

After setting the first frame in the print position, if you operate the operation key 18 to instruct photo printing, the first frame recorded on the film 20 will be printed and exposed on photographic paper, as is well known. Ru.

When the photographic printing of the first frame is completed, frame advance of the film 20 is started, and the printing of the second frame becomes possible.

In this way, when each frame recorded on the film 20 is sequentially printed and exposed, the trailing edge of the film is placed on the guide roller 30.
However, the film 20 is caught by a support roller 39 placed near the corner of the work table 11. This support roller 39 prevents the film 20 from hitting the corners of the work table 11 or coming into contact with the surface of the work table 11.

Furthermore, as the photo printing progresses, the edge of the film comes off the support roller 39 and comes into contact with the work table 11.
Since the film 20 is somewhat curled, there is no possibility of scratches or dust on the frames at the rear end of the film. Note that the leading edge of the film will hang down to the floor after printing and exposure, but since the frames recorded on these have already been printed, there is no problem even if dust gets on these frames. However, when making additional prints, it is necessary to remove this dust, so it is advisable to attach a bag or the like to the right end of the work table and place the printed portion into the bag.

In addition, for short films such as 12 sheets, the film loop may be small, so the film guide device 21
is moved to the position shown by the solid line in FIG. 3, and click-stopped at this position.

In addition, if the film guide device 21 gets in the way,
By rotating the arm 30 clockwise, the guide roller 37. The support roller 39 can be retracted above the work table 11.

FIG. 4 shows another embodiment of the invention.

In the film guide device 45 of this embodiment, a holder 46 is fixed to the side of the work table 11, and a lower end 47a of an arm 47 is inserted into a hole 46a of the holder 46 so as to be freely removable. A guide roller 48 is attached to the upper end of this arm 47, and a support roller 49 is attached to the lower part via a joint (not shown). Further, an arm 50 is attached to the joint, and a guide roller 51 is attached to this arm 50. In this embodiment, if the guide roller 51 becomes an obstacle, it can be evacuated to the position where the arm 50 shown by the two-dot chain line stands up. Note that if the film guide device 45 is not needed, it can be removed from the holder 46.

Although the above embodiment uses a support roller, this may also be a simple shaft.

〔Effect of the invention〕

According to the present invention having the above configuration, the first guide roller disposed above the work table and the second guide roller disposed close to the work table are used to move the film in a loop shape above the work table. I tried to keep it at
The film does not hang down on the floor or come into contact with the work table, which prevents the film from being scratched or attracting dust.

Further, since the film only needs to be passed under the second guide roller and then hung on the first guide roller, it is easy to set the film. Furthermore, since guide rollers are used, the film can be transported smoothly. Further, since a holder for fixing the film guide device can be attached to the photoprinting machine, it can be easily installed in a photoprinting machine that is already in operation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the film guide device of the present invention. FIG. 2 is a perspective view of the main parts of a photographic printer equipped with a film guide device. FIG. 3 is a front view of the main parts of a photographic printing machine equipped with a film guide device. FIG. 4 is a front view of main parts showing another embodiment of the present invention with the roller cut away. 10 ・ ・ ・ 11 ・ ・ ・ 17 ・ ・ ・ 20 ・ 21.45 32.37 39.49 48.51 Photoprinting machine work table Film carrier film Film guide device Guide roller Support roller Guide roller. 1 M Figure 2 Figure 3 Figure

Claims (2)

[Claims] (1) In a photoprinting machine that is equipped with a film carrier placed on a work table and prints photographs while passing a single film through the film carrier, the film carrier is placed above the side of the work table. a first guide roller for suspending a part of the film protruding from the film carrier; a second guide roller disposed below the first guide roller for guiding the film that has passed through the first guide roller toward the film carrier; 1. A film guide device comprising: a guide roller; and a holding means attached to a photoprinting machine. (2) In a photoprinting machine that is equipped with a film carrier placed on a work table and prints a photo while passing a single film through the film carrier, a A first guide roller for suspending a part of the film that is protruding; a second guide roller that is placed below the first guide roller and guides the film that has passed through the first guide roller toward the film carrier; 2. A film guide device comprising: a means disposed next to two guide rollers to catch an end of the film that has fallen off from the first guide roller; and a holding means for holding the ends and being attached to a photoprinting machine. .