JPH08234325A - Film carrier for photographic printing device - Google Patents

Abstract

PURPOSE: To provide a film carrier for photographic printing device on which a cleaning means for automatically cleaning an attachment such as dust and dirt on a photographic film and removing them with sureness of the same degree as manual removal is loaded. CONSTITUTION: This film carrier has a cleaner means 40 for pressing cloth webs 55, 54 capable of being transferred from the film nipping position of a film guide passage to an upstream position in the film feeding direction, in the direction crossing the film feeding direction o the upper and lower surfaces of a photographic film 30. It also has two rolls 46, 47, 41, 42 parallel to the film feeding direction so as to feed the cloth webs 55, 54 coming into contact with the upper and lower surfaces of the photographic film 30, respectively, and at least one roll of the upper side or lower side cloth web rolls is constituted in such a manner as to be retreatable to the upper side or lower side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film carrier for a photographic printing apparatus, and more particularly to a film carrier provided with a cleaning means for removing dust and dirt on a film to be printed.

[0002]

2. Description of the Related Art In a photographic printing apparatus, a film carrier is used to hold an image frame of a photographic film set at a printing position flat. This film carrier is composed of a lower mask on which a photographic film is placed and an upper mask which holds the photographic film together with the lower mask. The upper mask retreats upward during film transfer so as not to damage the emulsion layer of the photographic film, and is pressed downward by a solenoid during printing to hold the photographic film flat.

By the way, a photographic printing apparatus is an apparatus for enlarging and projecting an image recorded on a photographic film onto a photosensitive material such as photographic paper, and the photographic film is attached with dust and dirt at a printing position of a film carrier. It is required to be in a clean condition with no kimono.

As cleaning means for this purpose, conventionally, various methods such as static electricity removal, brush removal, air blowing, and suction are used.

[0005]

However, these cleaning means are carried out before the film is set on the film carrier, and in addition, the effect of removing dust, dirt, etc. is required for the complexity and cost of the apparatus. It is small, and even if some dust is removed, it is difficult to remove the dirt attached to the film.Before printing, an operator manually squeezes the film using a dust removal cloth to clean it. It is the current situation.

The present invention has been made in view of the problems of the prior art as described above, and an object thereof is to automatically remove dust, dirt, and other deposits on a photographic film and remove the dust. It is an object of the present invention to provide a film carrier for a photographic printing apparatus, which is equipped with a cleaning means for performing the cleaning operation as reliably as the manual removal.

[0007]

A film carrier of a photographic printing apparatus of the present invention which achieves the above object is a film guide for guiding a photographic film to a film holding position where an image frame of a photographic film to be printed is held by upper and lower masks. In a film carrier of a photographic printing apparatus having a path, a cloth web transportable in a direction transverse to the film feed direction is crimped to the upper and lower surfaces of the photographic film at a position upstream from the film holding position in the film guide path in the film feed direction. It is characterized by comprising a cleaner means for

In this case, at least two rolls each parallel to the film feeding direction are provided for feeding the cloth webs which come into contact with the upper and lower surfaces of the photographic film, and at least one of the rolls for the upper or lower cloth webs is provided. It is desirable that the book roll can be retracted to the upper side or the lower side. In this arrangement, even if the cloth webs that contact the upper and lower surfaces of the photographic film are made of different materials,
It may consist of one continuous piece.

It is also possible to construct a cloth web transfer path so that the photographic film can be inserted between the retracted and separated rolls in a direction orthogonal to the film feed direction.

[0010]

According to the present invention, the cleaner means is provided at the upstream position of the film guiding direction in the film guiding direction, at the upstream position in the film feeding direction. Therefore, it takes up less space than when a separate cleaner is installed, and it has a simple and low-cost configuration, which automatically interlocks with the feeding of photographic film without the operator being aware of dust and dirt. Etc. can be cleaned as securely as manually removed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A film carrier of a photographic printing apparatus according to an embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a plan view showing a film carrier of one embodiment of the present invention, FIG. 2 is a schematic side view seen from the left side of FIG. 1, FIG. 3 is a perspective view showing a main part of a film cleaner portion, and FIG. It is a figure which shows the path | route of the cloth web of a cleaner part.

First, the structure and operation of the film carrier body of this embodiment will be described. The film carrier of the present embodiment is roughly divided into a lower mask support frame 1 and an upper mask support frame 2 which is slidably mounted on the lower mask support frame 1 in the vertical direction of FIG. A lower mask (not shown) is detachably attached to the lower mask support frame 1, and the upper mask support frame 2
An upper mask 3 is detachably attached to the sheet via a pressure-bonding / jumping-up drive mechanism 4 which will be described later, and a film 30 to be printed is sandwiched between the lower mask and the upper mask 3. The relative position of the upper mask support frame 2 with respect to the lower mask support frame 1 is rotatably attached to the lower mask support frame 1,
It is adjustable by rotating the screw 12 screwed to the rotary dial 11 with the rotary dial 11, and is rotated when trimming and printing the image frame of the film 30 sandwiched between the lower mask and the upper mask 3. The relative position of the two is adjusted by turning the dial 11. The relative position of the two can be confirmed by the position mark 13.

The crimping / jumping drive mechanism 4 in which the upper mask 3 is attached to the upper mask supporting frame 2 so as to be crimped / kicked up, has a hoisting solenoid 5, two crimping solenoids 6,
A drive lever 8 swinging around a fulcrum 7, a spring 9 for urging the drive lever 8, a mounting frame 20 for mounting the upper mask 3 on the drive lever 8 in a replaceable manner, and a mounting frame 20 for the drive lever 8. Screw 21 to fix
Etc., and the outline of this action is as follows (for details, refer to JP-B-61-18519).

That is, before printing, the flip-up solenoid 5 is turned on and the upper mask 3 of the mounting frame 20 is turned on.
Is lifted from the lower mask, the film 30 is inserted from the curved front end side of the upper mask 3, and the film is moved along the film guide groove 10 provided on the upper mask support frame 2 in the direction of the double arrow. 30 is set, and the print target frame of the film 30 is aligned with the image window of the upper mask 3. When the flip-up solenoid 5 is turned off after the film is loaded, the drive lever 8 rotates about the fulcrum 7 by the stored force of the spring 9, so that the mounting frame 20 descends toward the lower mask and the upper mask 3 moves. Film 30 on the edge
Stop by pressing lightly. When the film 30 is printed, the two pressing solenoids 6 are energized, so that the drive lever 8 further rotates. When the drive lever 8 rotates, the film 30 is strongly pressed against the entire surface of the upper mask 3 to press the film 30 onto the lower mask. Then, the film 30 is illuminated by the light passing through the image window of the lower mask, and the light passing through the film 30 passes through the image window 3 of the upper mask 3, so that the shutter (not shown) of the photographic printer opens. Then, the image of the frame of the film 30 is printed on the photographic paper (not shown) through the paper mask. When the burning of the frame is completed, the crimping solenoid 6 is turned off, so that the drive lever 8 is rotated in the opposite direction.
Stop. After the printing, the film 30 is moved by one frame in the double arrow direction. At this time, since the film 30 is lightly pressed by a part of the upper mask 3, the film 30 can be smoothly transferred along the film guide groove 10 without damaging the film 30.

In the film carrier having the above structure, the film cleaner 40 according to the present invention, which is arranged upstream of the printing position of the film guide groove 10 in which the film 30 is transported in the direction of the double arrow, is the film guide. Two lower rolls 41 and 42 mounted on the upper mask supporting frame 2 on both sides of the groove 10 lower than the guide surface and parallel to the film guide groove 10 and the transfer of the film 30 on the film guide groove 10 are obstructed. Rather, it includes two mounting plates 43, 43 fixed to the upper mask support frame 2 in parallel with each other so as to be orthogonal thereto. Two
Two upper roll support plates 44, 44 (not shown in FIG. 2) swingable about a fulcrum 45 are attached between the single mounting plates 43, 43. Two upper rolls 46 and 47 are attached in parallel to the film guide groove 10 and are spaced apart from each other between 44 and 44. Then, a through groove 49 having a radius centered on the fulcrum 45 is provided on the back side (upper side in FIG. 1) of the mounting plate 43, and the pin planted on the back side end side surface of the upper roll support plate 44 through the through groove 49. 48 protrudes outward, and a spring 50 is stretched between the tip of the pin 48 and the side surface of the mounting plate 43. Since the mounting plate 43 and the upper roll supporting plate 44 are connected in this way, the upper roll supporting plate 44 has its tip (the right end in FIG. 3) as shown in FIG.
Stably rises to the upper position and the pin 48 is positioned to the upper side in the through groove 49 (the condition shown in FIG. 2) so that the tip of the upper roll support plate 44 is lowered downward. It is possible.

On the other hand, at the position corresponding to the mounting plate 43 on the innermost side (upper side in FIG. 1) of the upper mask support frame 2, a supply / winding roll support fitting 51 is attached, and a supply roll 52 and a supply roll 52 are attached thereto. A take-up roll 53 is attached. The supply roll 52 has two cloth webs 5
4, 55 are overlapped and wound, and the take-up roll 53 is configured such that the cloth web 54 passing through the supply roll 52 and the lower rolls 41 and 42 and the cloth web 55 passing through the upper rolls 46 and 47 are overlapped and wound up. ing.

Since the film cleaner portion 40 of this embodiment has the above-mentioned structure, the upper roll supporting plates 44, 44 are picked up at the tips (right end in FIG. 1) and raised (FIG. 3).
Thus, the leading edge of the film 30 to be printed can be inserted between the cloth web 54 between the lower rolls 41 and 42 and the cloth web 55 between the upper rolls 46 and 47. In that state, when the tips (right ends in FIG. 1) of the upper roll support plates 44, 44 are lowered, the upper rolls 46, 47 mounted between the upper roll support plates 44, 44 are moved upward by the force of the spring 50. Cloth web 55 presses the upper surface of the film 30, and the lower cloth web 54 presses the lower surface of the film 30 by the reaction of the pressing force (FIG. 4). Therefore, in this state, when the film 30 is pulled in the direction of the double arrow and the leading end thereof is set between the upper mask 3 and the lower mask at the printing position, the film 30 sandwiched between the two cloth webs 54 and 55 has both sides. It is squeezed with a cloth to effectively remove dust and dirt. After that, each time you step through frames, film 3
In the case of 0, dust, dirt, and other adhering substances are automatically removed before printing.

Cloth web 5 wiped off dust, dirt, etc.
Nos. 4 and 55 are arranged such that a new surface of the cloth is always in contact with the film 30 by winding the winding roll 53 by a predetermined amount in association with an appropriate time interval or the number of printing frames. it can. In addition, cloth web 5
The pressing force of 4, 55 to the film 30 is
Can be changed by selecting the strength of
The strength of the operator rubbing the film surface by hand can be reproduced by selecting an appropriate force.

By the way, in the above embodiment, the two cloth webs 54 and 55 are superposed and supplied from the supply roll 52, and the two cloth webs 54 and 55 are superposed and wound by the take-up roll 53. However, as shown in the path of FIG. 5 (a), it is also possible to use only one cloth web so that the upper and lower rolls 46, 47, 42, 41 are continuously passed. it can. Further, in the embodiments of FIGS. 1 to 4, it was necessary to insert the leading edge of the film 30 from the side between the cloth webs 54 and 55, but between the upper cloth web held on the upper side and the lower web, the front side (FIG. It is also possible to insert the film 30 from below 1). To this end, FIG.
FIG. 5 (b) shows a path in which only one cloth web is used to continuously pass between the upper and lower rolls 46, 47, 42, 41, and FIG. This is the case when using the web.

The film carrier of the photographic printing apparatus of the present invention has been described above based on the embodiment, but the present invention is not limited to this embodiment and various modifications can be made. For example, only one of the upper rolls 46 or 47 may be lifted upward when the film 30 is inserted. Further, instead of the upper rolls 46 and 47, the lower rolls 41 and 42 may be lowered downward. Further, the upper and lower rolls may be moved upward and downward so as to be separated from each other. Further, the film cleaner portion according to the present invention may be applied to various well-known film carriers which are fixed to each other without moving the upper mask holding the film with respect to the lower mask.

[0021]

As explained in detail above, according to the film carrier of the photographic printing apparatus of the present invention, the film guide path is located upstream of the film holding position in the film feeding direction and in the film feeding direction on the upper and lower surfaces of the photographic film. Since it has a cleaner means for crimping a cloth web that can be transported in the transverse direction, it does not take up space compared to the case where a separate cleaner is installed, and it has a simple and low-cost configuration and is linked to the feeding of photographic film. And automatically without the worker being aware,
Dust, dirt, etc. adhering to it can be reliably cleaned to the same extent as manual removal.
Also, this cleaning cloth web can be easily replaced.

[Brief description of drawings]

FIG. 1 is a plan view showing a film carrier according to an embodiment of the present invention.

FIG. 2 is a schematic side view seen from the left in FIG.

FIG. 3 is a perspective view showing a main part of a film cleaner section.

FIG. 4 is a diagram showing a path of a cloth web in a film cleaner portion.

FIG. 5 is a diagram showing a modified example of the path of the cloth web in the film cleaner portion.

[Explanation of symbols]

 1 ... Lower mask support frame 2 ... Upper mask support frame 3 ... Upper mask 4 ... Crimping / jumping drive mechanism 5 ... Jumping solenoid 6 ... Crimping solenoid 7 ... Support point 8 ... Drive lever 9 ... Spring 10 ... Film guide groove 11 ... Rotating dial 12 ... Screw 13 ... Position mark 20 ... Mounting frame 21 ... Screw 30 ... Photo film 40 ... Film cleaner section 41,42 ... Lower roll 43 ... Mounting plate 44 ... Upper roll supporting plate 45 ... fulcrum 46,47 ... Upper roll 48 ... Pin 49 ... Through groove 50 ... Spring 51 ... Supply / winding roll support metal fitting 52 ... Supply roll 53 ... Winding roll 54, 55 ... Cloth web

Claims (5)

[Claims] 1. A film carrier of a photographic printing apparatus having a film guide path for guiding a photographic film to a film holding position where an image frame of a photographic film to be printed is held by upper and lower masks, the film holding position of the film guiding path. A film carrier for a photographic printing apparatus, comprising a cleaner means for press-bonding a cloth web that can be transported in a direction transverse to the film feed direction on the upper and lower surfaces of the photographic film at an upstream position in the film feed direction. 2. At least two rolls, each of which is parallel to the film feed direction, are provided for feeding the cloth web that contacts the upper and lower surfaces of the photographic film, and at least one of the rolls for the upper or lower cloth web is provided. The film carrier of the photographic printing apparatus according to claim 1, wherein the book roll is configured to be retractable to the upper side or the lower side. 3. The film carrier of the photographic printing apparatus according to claim 1, wherein the cloth webs contacting the upper and lower surfaces of the photographic film are different from each other. 4. A film carrier for a photographic printing apparatus according to claim 1, wherein the cloth web contacting each of the upper and lower surfaces of the photographic film is a continuous one. 5. The transfer path for the cloth web is configured so that the photographic film can be inserted between the retracted and separated rolls in a direction orthogonal to the film feed direction. Film carrier for photo printing equipment.