JP2792551B2 - Dust remover for photographic photosensitive materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device for photographic light-sensitive materials.

[0002]

2. Description of the Related Art Such a photographic photosensitive material dust remover is a device for removing dust adhered to the surface of a photographic photosensitive material such as a photographic film, which is conveyed along a conveying path. Conventionally, as a configuration of a dust removing device for photographic photosensitive materials,
A brush or the like is fixedly installed in the middle of the conveying path of the photographic photosensitive material, and the dust is removed by passing the photographic photosensitive material through the installation location and adsorbing the dust to the brush or the like.

[0003]

However, in the above-mentioned conventional construction, since the brush for dust removal is fixedly installed, only the dust adhered to the surface of the photographic photosensitive material is wiped off when the photosensitive material is conveyed. Therefore, the dust removal ability is small, and when the density of the brush etc. is uneven or when the dust is concentrated on a specific location, the removal of dust attached to the photographic photosensitive material may be uneven. In addition, dust cannot be accurately removed. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a dust removing device for a photographic photosensitive material capable of accurately removing dust adhered to the photographic photosensitive material. . The second purpose is
It is an object of the present invention to achieve the first object while facilitating the maintenance of a photographic light-sensitive material to be conveyed in a conveying path.

[0004]

A first characteristic configuration of the dust removing apparatus for a photographic photosensitive material according to the present invention is a state in which a sheet-like photographic photosensitive material conveyed along a conveying path is in contact with each of the front and back surfaces. An endless belt-shaped cleaning member wound around the cleaning member, and a driving means for rotating the cleaning member in the winding direction so as to perform a cleaning operation by the rotation are provided. A second characteristic configuration is that, in the first characteristic configuration, the cleaning body is wound so as to rotate in a direction intersecting with the conveying direction of the photographic photosensitive material. The third characteristic configuration is the second characteristic configuration.
In the characteristic configuration, a pair of contact portions of the cleaning body with respect to each of the front and back surfaces of the photographic photosensitive material are configured to be rotationally driven in opposite directions at the same location in the transport direction of the photographic photosensitive material. .

[0005] A fourth characteristic configuration is the above-mentioned first, second or third feature.
In the characteristic configuration, a suction means for suctioning dust attached to a surface of the cleaning body on a side contacting the photographic photosensitive material is provided. The fifth characteristic configuration is the fourth characteristic configuration.
In the characteristic configuration, the cleaning body is wound so as to have a bent portion at a position separated from the photographic photosensitive material, and the suction unit suctions dust adhered to the cleaning body at the bent portion. The point is that it is composed. According to a sixth characteristic configuration, in the first, second, third, fourth, or fifth characteristic configuration, a surface of the cleaning body on the side that comes into contact with the photosensitive material is formed in a brush shape. .

[0006]

According to the first characteristic configuration of the present invention, the endless belt-shaped cleaning body is wound so as to be in contact with both front and back surfaces of the sheet-like photographic material conveyed along the conveyance path, and the driving means. Is driven to rotate in the winding direction. In other words, the endless belt-shaped cleaning body rotates and continuously contacts the photographic light-sensitive material in a state of being switched, so that the cleaning action comes into contact with the front and back surfaces of the photographic light-sensitive material. The dust adhered to the surface is widely and evenly and effectively wiped off and captured and removed. According to the second characteristic configuration of the present invention, the cleaning body rotates in a direction intersecting the conveying direction of the photographic photosensitive material, and dust that has not completely adhered to the cleaning body moves out of the conveying path of the photographic photosensitive material. Exclude.

According to the third feature of the present invention, a pair of contact portions of the cleaning body with respect to the front and back surfaces of the photographic material are driven to rotate in opposite directions at the same position in the conveying direction of the photographic material. That is, the portion of the cleaning body that contacts the front side surface of the photographic photosensitive material and the portion that contacts the back side surface are located at the same location in the transport direction of the photographic photosensitive material,
Both are rotated in a direction intersecting the conveying direction of the photographic material, but the rotating directions are opposite to each other, and the force acting on the photographic material by the rotation of the cleaning body is In other words, the front and back sides of the photographic material are in opposite directions and cancel each other. According to the fourth characteristic configuration of the present invention, the dust removed from the photographic photosensitive material and adhered to the cleaning body is sucked by the suction unit, and the dust is removed from the cleaning body.

According to the fifth aspect of the present invention, the cleaning body is provided in a direction intersecting with the conveying direction of the photographic light-sensitive material, and
It is wound so as to have a bent portion at a position away from the photographic material, and is rotated in the winding direction. Then, at the bent portion, the suction means sucks dust adhered to the cleaning body. At the bent portion of the cleaning body, the surface of the cleaning body on the side in contact with the photographic photosensitive material is elongated, so that the attached dust is easily released from the cleaning body, and at the same time, it is also caused by the centrifugal force at the bent portion. The detachment is promoted, and the suction means can effectively suction the dust adhered to the cleaning body. In addition, since the bent portion is located at a position distant from the photosensitive material, even if the dust separated from the cleaning body at the bent portion is not sucked by the suction means, the dust adheres to the photosensitive material again. Can be avoided. According to the sixth characteristic configuration of the present invention, the surface of the cleaning body on the side formed in a brush shape comes into contact with the photographic photosensitive material and is driven to rotate by the driving means to perform the cleaning action.

[0009]

According to the above-mentioned first characteristic structure, dust adhering to the front and back surfaces of the photographic light-sensitive material is widely and evenly and effectively wiped off and caught and removed. The present invention has provided a dust removing device for photographic photosensitive materials that can accurately remove dust. According to the second characteristic configuration, dust that has not completely adhered to the cleaning body is removed to the outside of the transport path of the photographic photosensitive material, so that dust attached to the photographic photosensitive material can be more accurately removed. The third above
According to the characteristic configuration, the force acting on the photographic photosensitive material due to the rotation of the cleaning body is reversed in the opposite directions on the front side and the back side of the photographic photosensitive material, and cancels each other. Thus, the operation and effect of the second characteristic configuration can be achieved while easily maintaining the above.

According to the fourth aspect, the suction means sucks and removes the dust adhered to the cleaning body, so that the cleaning body can maintain a high ability of removing the dust adhered to the photographic photosensitive material. It is possible to prevent the attached dust from returning to the photographic photosensitive material again or damaging the photographic photosensitive material as much as possible, so that the dust attached to the photographic photosensitive material can be more accurately removed. According to the fifth characteristic configuration, as described above, even if the suction means can effectively suck the dust adhered to the cleaning body and the dust separated from the cleaning body is not sucked by the suction means, Since the dust can be prevented from adhering to the photographic material again, the dust adhering to the photographic material can be more accurately removed. According to the sixth characteristic configuration, the brush-shaped surface removes dust adhering to the photographic photosensitive material, so that the dust adhering to the photographic photosensitive material can be accurately removed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a dust removing device of the present invention is provided in an image printer will be described below with reference to the drawings. As shown in FIG. 1, the image printer 1 includes a sheet-shaped photographic photosensitive material PL.
A projection exposure unit 5 for projecting and exposing an image of a photographic film 2 such as a negative film on a photographic paper 3 as an example, and a development processing unit D for developing the exposed photographic paper 3 are provided. The photographic paper 3 pulled out from the photographic paper magazine 4 containing the photographic paper 3 in a roll shape is exposed by a projection exposure unit 5 and then developed by a development processing unit D, and image information of one sheet is transferred. It is cut to the size containing it and discharged.

Hereinafter, each component will be described. The projection exposure unit 5 includes a projection exposure light source 10 and a photographic film 2.
Filter 1 that adjusts the color balance of the light applied to the light
1. Mirror tunnel 12 for uniformly mixing light passing through the light control filter 11, printing lens 13 for forming image information of the photographic film 2 on photographic paper 3, and shutter 1.
4 are provided on the same optical axis. An image sensor 1 for reading the image information of the photographic film 2 by dividing the image information into a number of areas on the upstream side of the photographic film 2 transport path of the projection exposure section 5.
5 are provided. The image sensor 15 irradiates the photographic film 2 with white light, decomposes the intensity of the reflected light or transmitted light into three primary colors of red, green, and blue, and uses, for example, a CCD line sensor or a CCD image sensor. The image information read by the image sensor 15 is sent to the controller 7 to be used to determine the exposure conditions in the projection exposure unit 5 and to be used in the printing paper 3 under the determined exposure conditions. Is displayed on the monitor M by simulating an image obtained when the image is exposed.

A roller 16 and a roller 18 for supplying the photographic film 2 to the projection exposure section 5 and a motor M3 for rotating the rollers 16 and 18 are provided upstream of the photographic film 2 conveying path of the image sensor 15. ing. Roller 16
The photographic film 2 transport path between the roller 18 and
A dust remover DR for the photographic film 2 is provided. As shown in FIG. 2, the photographic film 2 is attached to the dust removing device DR.
An upper brush belt 40 and a lower brush belt 41 as endless belt-like cleaning members provided on both upper and lower sides of the transport path, suction means DS for sucking dust attached to the upper and lower brush belts 40, 41, and upper and lower brush belts. Brush belt 40,
And a driving means BD for rotating the drive 41.

The driving means BD includes brush belts 40 and 41
A driving roller 42 and a driven roller 43 for winding
A connection shaft 44 connected to the drive roller 42, a motor M4 for rotatingly driving the brush belts 40 and 41, and a motor roller 4 provided at the end of the rotation shaft of the motor M4.
5, and a motor roller 45 and two connecting shafts 4
And a transmission belt 46 wound around the end of the motor belt 4 and transmitting the driving force of the motor M4.
1 is driven to rotate counterclockwise when viewed in the transport direction of the photographic film 2.

The suction means DS is provided near the driven roller 43 for winding the upper brush belt 40 and the lower brush belt 41.
Openings 47a and 47 near the drive roller 42 for winding
b, and a fan 48 connected to the air duct 47.
The brush belts 40 and 41 rotate in a direction to suck dust from the brush belts a and 47b.

As shown in FIG. 3, the brush belts 40, 4
1 is such that brushes 40b and 41b are formed on the surfaces of the belt bases 40a and 41a on the side in contact with the photographic film 2, and where the upper brush belt 40 and the lower brush belt 41 face each other, the brushes 40b and 41b Are in a state where the tips overlap each other. The photographic film 2 passes through the overlapping portion of the brushes 40b and 41b, and the brush belts 40 and 41 come into contact with the front and back surfaces of the photographic film 2, respectively.
The drive belt 42 and the driven roller 43 are rotated so that the brush belts 40 and 41 rotate at a 90 ° angle to the conveyance direction of the photographic film 2 indicated by an arrow A in FIG.
And is wound around.

Since both the upper brush belt 40 and the lower brush belt 41 rotate counterclockwise as viewed in the transport direction of the photographic film 2, the brush belt 4
A pair of contact portions on the front and back surfaces of the photographic film 2 at 0 and 41 are rotated in opposite directions at the same position in the transport direction of the photographic film 2. The drive roller 42 and the driven roller 43 are installed at positions separated to the left and right sides of the photographic film 2, and the bent portions B of the brush belts 40 and 41 formed by the drive roller 42 and the driven roller 43 are also used for the photographic film 2. It is located at a location away from 2.

The openings 47a, 47b of the air duct 47 of the suction means DS are set toward the first bent portion B of the brush belts 40, 41 after coming into contact with the photographic film 2. . That is, since both the upper brush belt 40 and the lower brush belt 41 rotate counterclockwise as viewed in the transport direction of the photographic film 2, the opening 47 a for the upper brush belt 40 is closer to the fan 48. Of the lower brush belt 4
The opening 47b for 1 is located toward the bent portion B farther from the fan 48, and sucks dust attached to the brush belts 40 and 41 located at the respective bent portions B. Thus, the first bent portion B after contact with the photographic film 2
By sucking the dust adhered to the brush belts 40 and 41, the dust adhered to the brush belts 40 and 41 can be accurately removed without being scattered unnecessarily.

In the projection exposure section 5, the controller 7 controls the dimming based on the image information of the photographic film 2 read by the image sensor 15 with the supply operation of the photographic film 2 by the rollers 16, 18 and the motor M3. The filter 11 is controlled to adjust the irradiation light of the projection exposure light source 10 to a color balance corresponding to the color density of the image on the photographic film 2, and irradiates the photographic film 2 with the adjusted light. The second image information is printed on the printing paper 3.

A roller 22 for transporting the photographic paper 3 and a motor M2 for driving the roller 22 are provided downstream of the photographic paper transport path of the projection exposure section 5. Development processing section D
Although not shown, a plurality of tanks filled with a processing liquid for developing the exposed photographic paper 3 are provided, and the photographic paper 3 is sequentially developed through the plurality of tanks. It is.

The operation of exposing the photographic paper 3 of the image printer 1 will be briefly described below. After the image printer 1 is started, when the photographic film 2 is loaded into the projection exposure unit 5, the motor M3 operates to start the conveyance of the photographic film 2.
When the approach of the photographic film 2 is detected by a sensor (not shown), the motor M4 of the dust removing device DR operates to start the rotation driving of the brush belts 40 and 41. The photographic film 2 passing through the places where the brush belts 40 and 41 are installed is dust-removed by the brush belts 40 and 41 and
The dust adhering to 0, 41 is removed by suction by the suction means DS. In the photographic film 2 that has passed through the dust removing device DR, the image information of the frame 2a is read by the image sensor 15, and the frame 2a that has read the image information is transported to the exposure position.

When the controller 7 determines the exposure conditions based on the information read by the image sensor 15, the controller 7 simulates an image as a photographic print obtained when the photographic paper 3 is exposed under the exposure conditions, and To be displayed.

The operator looks at the display on the monitor M, and inputs a correction instruction from the console O if correction is necessary, and directly inputs an exposure instruction from the console O if correction is unnecessary.
When an exposure instruction is input, the image on the photographic film 2 is exposed on the photographic paper 3 by the projection exposure unit 5 based on the obtained exposure conditions.

[Other Embodiments] Hereinafter, other embodiments will be listed. (1) In the above embodiment, the brush belt 4 of the dust removal device DR
A pair of contact portions on the front and back surfaces of the photographic film 2 at 0 and 41 are rotationally driven in opposite directions at the same position in the transport direction of the photographic film 2.
You may comprise so that it may be rotationally driven in the same direction. That is, as shown in FIG. 4, gears 44a and 44b having the same number of teeth are attached to respective ends of two connecting shafts 44 in a state where both gears mesh with each other, and one of the gears 44a is attached to the rotation shaft of the motor M4. It is arranged so as to mesh with the attached drive gear 49. With this configuration, the motor M
By the rotation of 4, the upper brush belt 40 is driven to rotate counterclockwise when viewed in the transport direction of the photographic film 2 and the lower brush belt 41 is driven to rotate clockwise in the transport direction of the photographic film 2. Is done. It should be noted that the configuration of the transmission mechanism of the driving force of the motor M4 can be variously changed in the above-described embodiment and this embodiment.

(2) In the above embodiment, the brush belts 40 and 41 having a brush-like surface on the side in contact with the photographic film 2 are illustrated as the endless belt-shaped cleaning members. It may be formed and used.

(3) In the above embodiment, the brush belts 40 and 41 of the dust removing device DR are wound so as to intersect with the conveying direction of the photographic film 2 at an angle of 90 °. The width of the photographic film 2 as viewed in the conveying direction may be made as narrow as possible, or may be arranged in parallel with the conveying direction of the photographic film 2. Further, the upper brush belt 40 and the lower brush belt 41 may be arranged so as to intersect each other in plan view.

(4) In the above embodiment, the upper brush belt 40 and the lower brush belt 41 of the dust removing device DR come into contact with both the front and back surfaces of the photographic film 2 at the same position in the conveying direction of the photographic film 2. However, the upper brush belt 40 and the lower brush belt 41 may be in contact with the photographic film 2 at different positions in the conveying direction of the photographic film 2.

(5) In the above embodiment, the two brush belts, the upper brush belt 40 and the lower brush belt 41, are provided so as to be in contact with the front and back surfaces of the photographic film 2. The belt may be wound in a substantially U-shape sandwiching the front and back surfaces of the photographic film 2, and may be driven to rotate in the winding direction.

(6) In the above embodiment, the openings 47a and 47b of the air duct 3 of the suction means DS of the dust removing device DR are the first portions of the bent portions B of the brush belts 40 and 41 after coming into contact with the photographic film 2. Although it is installed toward the bent portion B, it may be provided at all the bent portions B, or may be installed toward a portion other than the bent portion B. Further, a plurality of suction means DS may be provided, or may not be provided at all.

(7) In the above embodiment, the brush belts 40 and 41 of the dust removing device DR are composed of the driving roller 42 and the driven roller 4
3, a brush belt is wound around one roller, and the brush belt is wound around the photographic film 2.
May be arranged on the upper and lower sides, respectively, so as to contact the photographic film 2 from both the upper and lower sides.

(8) In the above embodiment, the case where the dust removing device for the photographic photosensitive material of the present invention is provided in the image printer is exemplified. However, the present invention may be provided in various devices such as a projector which handle the photographic photosensitive material. Good, or may be configured to be used alone.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part according to the embodiment of the present invention.

FIG. 3 is an enlarged view of a main part according to the embodiment of the present invention.

FIG. 4 is a perspective view of a main part according to another embodiment of the present invention.

[Explanation of symbols]

 2 Photographic films 40, 41 Cleaning body (brush belt) PL Photosensitive material BD Driving means DS Suction means B Bending portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 27/32 G03B 27/46 G03B 27/52 B65H 20/00

Claims (6)

(57) [Claims] 1. An endless belt-shaped cleaning body (40, 41) wound in contact with both front and back sides of a sheet-shaped photographic photosensitive material (PL) conveyed along a conveyance path; A dust removing device for a photographic photosensitive material, provided with a driving means (BD) for rotating the cleaning body (40, 41) in the winding direction so as to perform a cleaning action by the rotation. 2. The photographic photosensitive material according to claim 1, wherein the cleaning body is wound so as to rotate in a direction intersecting a conveying direction of the photographic photosensitive material. Dust removal device. 3. A pair of contact portions of the cleaning body (40, 41) with respect to the front and back surfaces of the photosensitive material (PL) are turned in opposite directions at the same location in the transport direction of the photosensitive material (PL). 3. The dust removing device for a photographic photosensitive material according to claim 2, wherein the dust removing device is configured to be driven dynamically. 4. A suction means (DS) for sucking dust adhered to a surface of the cleaning body (40, 41) on a side in contact with the photosensitive material (PL). 3. A dust remover for photographic photosensitive materials according to 3. 5. The cleaning body (40, 41) is wound so as to have a bent portion (B) at a position distant from the photographic material (PL), and the suction means (DS) is provided with the bent portion (DS). 5. The dust removing device for a photographic photosensitive material according to claim 4, wherein the portion (B) is configured to suck dust adhered to the cleaning body (40, 41). 6. The photographic light-sensitive device according to claim 1, wherein a surface of the cleaning body (40, 41) on a side in contact with the photographic light-sensitive material (PL) is formed in a brush shape. Dust remover for materials.