JP2002236348A - Brush for film cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide brushes for a film cleaner which do not flaw film surfaces as far as possible. SOLUTION: The brushes B for the film cleaner are mounted on the film cleaner for removing the dust sticking to the photographic film and come into direct contact with the dust. The brushes comprise many bristles 8 of a prescribed length consisting of small-diameter synthetic resin fibers of <=0.1 mm diameter, preferably 0.055 to 0.060 mm and a core material 9 which bundles these bristles at their one-side ends and compression bond and fix the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush for a film cleaner which is attached to a film cleaner for removing dust adhering to a photographic film and which comes into direct contact with dust.

[0002]

2. Description of the Related Art Conventionally, animal hair has been used as a material for brush bristles in a brush for a film cleaner.
However, in the case of animal hair, even if a thin and soft material is selected, small scratches may occur on the film surface when the photographic film moves while contacting the brush tips.

[0003] In addition, brushes made of synthetic resin fibers which have been commercially available for a long time have thick bristles, resulting in high rigidity, which not only causes damage to the film surface, but also increases the packing density of the bristles. It was low, and the retention of dust removed from the film surface was not sufficient, and the possibility that dust removed from the film surface would adhere to the film surface again could not be ignored.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a brush for a film cleaner which does not damage the film surface as much as possible.

[0005]

In order to solve the above-mentioned problems, a brush for a film cleaner according to the present invention, which is mounted on a film cleaner for removing dust adhering to a photographic film and comes into direct contact with dust, has a wire diameter of 0 mm. It is composed of a large number of brush bristles of a predetermined length made of synthetic resin fibers having a diameter of 0.1 mm or less, and a core material for bundling these bristles at one end and pressing and fixing them. Since extremely thin synthetic resin fibers were used as the brush bristles, each brush bristle was sufficiently soft, and even if it was brought into contact with a photographic film, there was almost no risk of damaging the film surface. Also,
Since one end of the brush bristles is pressed and bundled with a core material, the open ends of the brush bristles vary freely, and have a structure in which dust removed from the photographic film is easily swept.

As an embodiment for producing a result excellent in dust removal property without damaging the film surface, the brush bristles have a wire diameter of 0.055 to 0.060 mm and a packing density of the core material of 350 to 400 pieces / square. mm.

[0007] Further, in the preferred embodiment of the present invention, the brush bristle tip has an arc-shaped contour in the transverse direction of the brush as a brush bristle tip distribution shape allowing the above-mentioned free variation on the open tip side of the brush bristle. The arc has a radius of about 13 mm and an arc length of about 20 mm.

[0008] Acrylic resin is suitable as a material for the brush bristles, but especially PMMA (polymethyl methacrylate).
Is particularly preferred from the viewpoint of the flexibility and the like at the time of processing with a small diameter.

In one preferred embodiment of the present invention, the core material is a magnetic material having a bottom surface parallel to the brush tip in the brush longitudinal direction. Thus, by simply providing the film cleaner with a flat magnet, the cleaner brush can be easily detachably mounted using magnetic force while ensuring horizontal accuracy.

[0010] In addition, instead of fixing using magnetic force, it is naturally conceivable to use a conventionally well-known clamp connection. At this time, if the compression mark formed when the core material is pressed with the brush bristle functions as an engaging portion for mounting to the film cleaner via the clamp mechanism, an additional clamping purpose for the cleaner brush is provided. Processing and mounting of members become unnecessary, which is advantageous in terms of manufacturing cost. Other features and advantages according to the present invention will become apparent from the following description of embodiments with reference to the drawings.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the film cleaner 100 includes a base housing C and a swing arm A that swings and opens and closes around an axis X with respect to the base housing C. A first brush B1 and a second brush
When the brush B2 closes and swings the swing arm A with respect to the base housing C, the ends of the brushes face each other.
It is mounted and held in each of the holding modes described in detail below. Note that the first brush B1 and the second brush B2 are simply referred to as a brush B when there is no particular need to distinguish them.

This film cleaner 100 is shown in FIG.
As shown in (a), a transport path F for feeding the film 1 to a film carrier 2 of a scanner S that takes in image information of a photographic film 1 (hereinafter abbreviated as a film), a film carrier of a projection exposure type printer ( (Not shown)
The film 1 is disposed on a portion such as a conveying path for feeding the film 1 to the surface of the film 1 so that the film 1 is neutralized by the action of ionized air. Get rid of.

In FIG. 2A, the film cleaner 100 is magnetically fixed to the vertical wall 3 of the desk on which the scanner S is mounted. In this use mode, the film carrier 2 pulls the film 1 so that the 135 size film 1 is removed by the film cleaner 1.
00, but 120 size, 220
When a film 1 having a size is to be used, the film cleaner 100 is used in a state where the film cleaner 100 is magnetically attracted to the auxiliary table 4 mounted in a shelf shape in the lateral direction as shown in FIG. In any case, the film 1 passes through the film cleaner 100 by the film transport function of the film carrier 2.

The details of the film cleaner 100 will be described below. As shown in FIGS. 1, 3, and 4, the base housing C includes an upper wall surface 11 that is substantially parallel to the transport path F,
A case member 10 formed by integrally forming a pair of side wall surfaces 12 and a pair of end wall surfaces 13 with synthetic resin, and a bottom wall member 20 made of synthetic resin integrally formed with an inner wall 21 containing the ionization system IS. Have been. A support portion 14 having a hole for supporting the swing arm A is integrally formed on an upper surface on one end side of the case member 10 so as to protrude upward. An engagement hole 13A is formed in the end wall surface 13 on the side supporting the swing arm A.

The upper wall surface 11 of the case member 10 has a second
A groove 15 for accommodating the holding mechanism D2 and the brush B2 detachably held by the second holding mechanism D2.
And concave portions 16 for facilitating insertion of a finger when attaching and detaching the brush B2 are formed at the ends of the groove portions 15 so as to be continuous with each other.

As is apparent from FIGS. 3 and 5, the swing arm A uses an arm body 30 molded of a synthetic resin so as to have a U-shaped cross section as a main constituent member. A shaft portion 31 rotatably engaged with the support portion 14 around the axis X is formed integrally with the pivot base end portion of the arm body 30, and an end portion on the side of the pivot base portion is formed. Are formed with three engaging recesses 32 for determining the swinging posture. The arm body 30 itself forms a groove-shaped space opened downward, and the first holding mechanism D1 and the brush B1 detachably held by the first holding mechanism D1 are accommodated in the groove-shaped space. A cut-out portion 36 into which a finger can be inserted when attaching and detaching the brush B1 is formed at an end edge of the arm body 30.

As shown in FIG. 4, when the end of the leaf spring 7 having the projection 7A engaging and disengaging with the three engagement recesses 32 is engaged with the case member 10, the case member 10 is The wall member 20 is fitted and joined. Bottom wall member 20
As a result of the leaf spring 7 being pressed by the pressing piece 25 formed as described above, the projection 7A of the leaf spring 7 performs a position holding function that can be engaged with any of the three engagement recesses 32. When the swing arm A is swingably set to the closed posture (cleaning posture) P0 as shown in FIG. The projecting portion 7A of the spring 7 is engaged to apply a biasing force in the closing direction to the swing arm A, and the swing arm A is provided with an opening edge 10 formed in the case member 10.
A is kept in the closed position by contacting the position A.

As shown in FIG. 6, when the swinging end of the swing arm A is slightly operated in the opening direction from the closing posture P0, the engaging recess adjacent to the engaging recess 32 corresponding to the closing posture P0. The projecting portion 7A of the leaf spring 7 engages with the swing arm 32, and the swing arm A has an open position P with a gap sufficient to allow the film 1 to be inserted and removed between the first brush B1 and the second brush B2.
It is held at 1. From this state, when the swing end of the swing arm A is further operated in the opening direction, the next engagement recess 32
The projection 7A of the leaf spring 7 engages with the
Is a posture that has swung more than the opening posture P1, and is held in a maintenance posture P2 that allows attachment and detachment with any of the brushes B.

That is, by configuring the swing arm A to be freely openable and closable, when the film 1 is set between the first brush B1 and the second brush B2, or when the film 1 is taken out, the swing arm A By simply opening the film 1 to the first position P1, the film 1 can be easily inserted and removed while maintaining the open position, and when maintenance such as cleaning or replacement of the brush B is performed, the swing arm A The maintenance operation can be easily performed by performing the opening operation to the maintenance posture P2. Particularly, the swing arm A is closed in the posture P0.
Is set, the urging force from the leaf spring 7 always acts in the closing direction of the swing arm A to bring the swing arm A into contact with the above-described opening edge 10A. Can be maintained in a predetermined closing posture P0.

As shown in FIG. 7, the brush B has a large number of bristles 8 made of synthetic resin fibers having a diameter of 0.1 mm or less, preferably 0.055 to 0.060 mm. Are bundled at one end thereof and are fixed by pressure bonding. The length of brush bristles 8 is about 1
5 mm, and the packing density of the brush bristles 8 in the core material 9 is 3 mm.
It is 50 to 400 pieces / square mm. While one end of the brush bristles 8 is strongly bound by the core material 9, the tip thereof is free, so that the tip of the brush bristles 8 forms an arc-shaped contour that spreads in the brush transverse direction. That is, the arc has a radius of about 13 mm and an arc length of about 20 mm. The length of the brush B in the brush longitudinal direction is set to be a value (about 70 mm) sufficiently larger than the width of the film 1 of the brownie size.

Acrylic resin is suitable as the material of the brush bristles 8, and in particular, PMMA (polymethyl methacrylate) is employed here. The core material 9 is made of a magnetic material such as steel or an alloy steel such as a nickel alloy, and is attracted to a magnet. The core material 9 has a final shape when all the brush bristles 8 are sandwiched by a crimping press. As shown in the figure, the bottom surface is parallel to the tip contour of the brush bristles 8 in the brush longitudinal direction. The width in the transverse direction of the brush is about 5 mm, and pressure contact marks 9a extending in the longitudinal direction of the brush are formed on both side surfaces.

As shown in FIG. 7, a core member 9 of the first brush B1 is provided as a first holding mechanism D1 for holding the first brush B1 inside an arm body 30 constituting the swing arm A.
Is fixedly provided with two U-shaped clamp pieces 33 made of a metal spring material which are elastically embraced and held from both sides at intervals in the longitudinal direction of the brush. The clamp plate 34 is fixed with screws 35. When the core material 9 is clamped and held by the U-shaped clamp piece 33, the compression mark 9 a formed on the core material 9 can function as an engaged holding portion for the U-shaped clamp piece 33.

As shown in FIG. 4, on the bottom surface of a groove 15 formed in the case member 10 forming the base housing C, as a main element of a second holding mechanism D2 for holding the second brush B2, A flat holding magnet MC is horizontally arranged. When the second brush B2 is mounted such that the holding magnet MC and the bottom surface of the core material 9 of the brush B2 are in direct contact with each other, the second brush B2 includes the first brush B1 mounted on the swing arm A, In the cleaning posture, they will face each other.

Thus, the brush B2 is moved from the case
By simply inserting the brush B2 into the grooved portion 15, the holding magnet MC provided on the bottom surface of the grooved portion 15 attracts the core material 9 of the brush B2 by magnetic force, so that the brush B2 is held in the base housing C. . In this holding state, the tip of the brush B2 slightly projects from the upper wall surface 11 of the case member 10. When the brush B1 is held on the swing arm A, the core material 9 of the brush B1 is
By simply engaging and inserting the U-shaped clamp piece 33, the U-shaped clamp piece 33 can clamp the brush B1 and elastically support it. When removing the brush B2 from the base housing C, the brush B2 can be easily pulled out by inserting a finger into the recess 16 and pinching it.
When removing the brush B1 from the swing arm A, the brush B1 can be easily extracted by inserting a finger into the notch 36 and pinching it.

The holding magnet MC is adhered and fixed to a bracket 5 arranged at the bottom of the groove portion 15. A screw hole 5A as a nut portion is formed at both ends of the bracket 5, and a screw hole 5A is formed in the screw hole. Screw 6 to be screwed into groove 15
Is inserted through the through hole at the bottom. With the bottom wall member 20 fixed to the case member 10, a recess 22 into which the head 6A of the screw 6 fits is formed in the bottom wall member 20, and an adjustment hole 22A penetrating this recess is formed so as to be continuous with the recess 22. It is. The screw portion of the screw 6 is coated with a friction film made of synthetic resin, and a relatively large frictional force is applied to the screwing surface between the nut portion and the screw 6 to maintain the turning operation state of the screw 6. It is configured to be able to. This friction film can be formed on the inner surface of the screw hole of the nut.

With the structure of the second holding mechanism D2, the posture of the second brush B2 with respect to the base housing C can be adjusted by the nut portion and the screw 6. Holding magnet M
By inserting a tool such as a wrench or a screwdriver into the adjustment hole 22A and rotating one of the screws 6 while the second brush B2 is attracted to C, the second brush B2 held by the holding magnet MC is rotated. Is adjusted to adjust the relative attitude with respect to the first brush B1 held by the swing arm A. By rotating each screw 6 equally, the brush B2 is translated and shaken. The space between the moving arm A and the brush B1 can be adjusted.
In particular, since a friction film is formed on the screwing surface between the nut portion and the screw 6 to exert a frictional force on the rotation of the screw 6, vibrations that rotate the screw 6 can be obtained without providing a double nut or a dedicated lock mechanism. Even if a situation in which the second brush B2 acts externally is prevented, the screw 6 is prevented from rotating unexpectedly to change the attitude of the second brush B2, and prevents the second brush B2 from moving in parallel.

As shown in FIG. 8, four rubber seats 23 are provided on the bottom surface side of the bottom wall member 20, and a swing axis of the swing arm A: X
The magnetic fixed unit MS is unevenly disposed on the opposite side to the magnetic fixed unit MS. The magnetic fixed unit MS has a swing axis: X
A first magnet MS1 disposed adjacent to the end wall surface 13 on the opposite side to extend in the brush transverse direction, and a second magnet MS1 extending in the brush longitudinal direction and disposed substantially at the center thereof. And a magnet MS2.
The four rubber seats 23 have the same height but project below the first magnet MS1 and the second magnet MS2. When the film cleaner 100 is fixed to the apparatus desk surface, the first magnet MS1 and the second magnet A slight gap is created between the magnet MS2 and the desk surface, and the unevenness of the magnet surface, which may possibly occur due to adhesion of metal powder or the like, avoids the danger of impairing the parallelism of the film cleaner 100. .

Since the magnetic fixing unit MS is biased to the side opposite to the pivot axis X of the pivot arm A, when the film cleaner 100 is magnetically fixed to a wall or the like, a strong tension is applied from the film 1. Is applied, the swing arm A is operated in the opening direction, or the brush B2 is removed from the groove 15 as shown in FIG.
Even if a strong force acts in the direction to leave the film cleaner 0, the film cleaner 1 can be easily formed due to the relationship of the moment (the lever length is short).
The position of 00 does not change. However, swing arm A
Oscillating axis: When a force is applied upward from the X side, the film cleaner 100 can be easily removed from the desk surface or the like due to the relationship of the moment (the lever length is long).

As shown in FIG. 4 and FIG.
The upper wall surface 11 is formed as a gentle curved surface whose central portion is slightly recessed when viewed in the direction along the transport direction of the film 1. As shown in FIG. When viewed in a direction perpendicular to the film surface to which the film is fed along the transport path F, the central portion is formed as a gentle curved surface with a slight recess. By forming the flat surface near the portion where the film 1 passes through into a curved surface as described above, the frequency of the edge of the film 1 in the width direction contacting the base housing C is increased when the film 1 is transported. The configuration is such that the inconvenience of the case member 10 contacting the portion where the is formed is avoided and the image is not damaged.

Further, as shown in FIGS. 4 and 5, on the outer surface of the arm 30 on the side opposite to the brush, three rollers 37 made of synthetic resin are provided around the axis Y in a posture along the longitudinal direction of the arm 30. It has been idlely supported. The roller 37 allows the film 1 to move lightly to this position when the swing arm A is in the closed posture P0. That is,
Even when the image information of the film 1 is captured by the scanner S,
Even in the case of performing the projection exposure, prior to this processing, a prescan is performed to convey the film at a relatively high speed and coarsely capture the image information, and thereafter, the film 1 is fed backward or returned. After that, scanning or projection exposure is generally performed while feeding the film again. Thus, after pre-scanning, the film 1 is exposed.
When the film 1 is returned to the side of the film cleaner 100, the film 1 is fed to the upper surface of the swing arm A (opposite the main body case side) as shown in FIG.
Is in contact with the roller 37, and the roller 37 rotates lightly to feed the film 1 lightly so that the work can be performed smoothly and troubles such as damage to the film 1 do not occur.

As shown in FIGS. 5, 9, and 10, a connector 47 for receiving power from an external DC power source is provided on the end wall 13 on the base end side of the swing arm A of the main body case 10, and the ionization is performed. The system IS includes a first printed circuit board 40 supported on the inner wall 21 of the bottom wall member 20, a high voltage generating circuit 48 formed on the first printed circuit board 40, and power supplied to the high voltage generating circuit 48. A pilot lamp 43 composed of a light-emitting diode that is lit when the vehicle is turned on, a pair of second printed boards 44 supported in a posture parallel to the first printed board 40, and respective second printed boards 44.
And a plurality of needle-shaped electrodes 45 provided on the
These are configured to have an insulating synthetic resin 46 that is potted in such a manner that only the tips of the electrodes 45 protrude.

Further, in this ionization system IS, high and negative high voltages are applied to the respective electrodes 45 from the high voltage generation circuit 48, and the position where the brush B is disposed in the base housing C is determined. Four electrodes 45 are arranged in two areas (at the upper position and the lower position with the brush B in the transport direction of the film 1). Specifically, the respective electrodes 45 are arranged at equal intervals on a virtual plane parallel to the surface of the film 1 sent to the transport path and linearly aligned in a direction orthogonal to the direction in which the film 1 is sent. Equipped with these electrodes 4
9, the adjacent electrodes and the electrodes adjacent to each other across the brush B are set to have different polarities, as indicated by the symbols “+” and “−” in FIG.

Eight circular openings 18 are formed in the upper wall surface 11 of the case member 10 at positions corresponding to the respective electrodes 45 so that the openings can be viewed in a direction perpendicular to the surface of the film conveyed along the conveyance path F. An electrode 45 is arranged at a central position of 18. Of the upper wall surface 11 of the case member 10, eight openings 18 arranged with the groove portion 15 interposed therebetween are provided in a shallow concave portion 11 </ b> A formed on the surface of the upper wall surface 11.

The ionization system IS applies a voltage of +/- 3500 volts between the plus (+) electrode 45 and the minus (-) electrode 45 so that a 7000 volt voltage is applied between the respective electrodes 45. The potential difference is set. As a result, a strong electric field is formed between the plus (+) electrode 45 and the minus (-) electrode 45, and the air that has contacted the electrodes is separated into plus (+) and minus (-) ions, respectively. When the film 1 existing in the transport path F is charged by static electricity from the opening 18 through the opening 18, the film 1 comes into contact with air ions to eliminate the charge (discharge),
The dust adhered by the static electricity can be easily removed by the brush B, and the adhesion of the dust is suppressed thereafter.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a film cleaner equipped with a film cleaner brush according to the present invention.

FIG. 2 is a schematic view showing an example of using a film cleaner.

FIG. 3 is an exploded perspective view of a film cleaner.

FIG. 4 is a longitudinal sectional view of a film cleaner.

FIG. 5 is a cross-sectional view of a film cleaner.

FIG. 6 is a side view showing a plurality of swing positions of the swing arm.

FIG. 7 is a perspective view of a brush for a film cleaner.

FIG. 8 is a bottom view of the film cleaner.

FIG. 9 is a partial longitudinal sectional view showing an area of the ionization system.

FIG. 10 is a plan view of a film cleaner.

[Explanation of symbols]

 Reference Signs List 1 photographic film 8 brush bristles 9 core material 9a compression mark A swinging arm B brush for film cleaner B1 first brush B2 second brush C base housing F transport path IS ionization system 100 film cleaner

Claims (6)

[Claims] 1. A brush for a film cleaner which is attached to a film cleaner for removing dust adhering to a photographic film and which comes into direct contact with the dust, wherein the brush has a predetermined length made of a synthetic resin fiber having a wire diameter of 0.1 mm or less. A brush for a film cleaner, comprising: a large number of brush bristles; and a core material for bundling and fixing these brush bristles at one end thereof. 2. The brush bristles having a wire diameter of 0.055 to 0.06.
2. The brush for a film cleaner according to claim 1, wherein the core material has a packing density of 350 to 400 brushes / square mm at 0 mm. 3. 3. The brush according to claim 2, wherein the tips of the brush bristles form an arc-shaped profile in the transverse direction of the brush, and the arc has a radius of about 13 mm and an arc length of about 20 mm. A brush for a film cleaner according to the above. 4. The brush according to claim 1, wherein said brush bristles are made of PMMA (polymethyl methacrylate). 5. The brush for a film cleaner according to claim 1, wherein said core material is a magnetic material having a bottom surface parallel to a brush tip in a brush longitudinal direction. 6. The method according to claim 1, wherein the pressing mark at the time of pressing the brush bristle of the core material functions as an engaging portion for mounting to a film cleaner via a clamp mechanism. The brush for a film cleaner according to the above.