JPH0216350Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a roll film carrier useful for use in microreaders and printers, and is designed to facilitate the operations of loading and unloading the roll film and feeding frames even in narrow spaces.

Conventionally, microfilm readers and printers used film (sheet-like film).
There is also one that can be used for both roll film and roll film. in this case,
A pair of reels 1, 1' on which the roll film is wound
There are those that are installed vertically as shown in FIG. 1a, and those that are installed horizontally (horizontally) as shown in FIG. 1b. In FIGS. 1a and 1b, 2 is a screen, 3 is a table, 4 is a lens system, and 5 is a roll film.

Since the reels 1 and 1' are quite large, when placed vertically, the space (height) between the screen 2 and the table 3 must be extremely large in order to install the reels and rotate the reel handles. The printer becomes larger in height.
On the other hand, if this space is to be made smaller, the reels 1 and 1' will protrude outside the machine as shown in FIG. 1A, and the length of the arm supporting the reels will become longer. Furthermore, in this case, when the reel handle is turned to feed pieces, the reel shakes and becomes unstable, so the reel support structure must be extremely strong, which increases costs.

Therefore, the reels 1 and 1' are placed horizontally as shown in FIG. 1b. In this case, since the reels 1, 1' themselves are thin, they do not require much space when mounted. However, when attaching and detaching the reel and when turning the reel handle, it is necessary to completely insert the hand between the screen 2 and the table 3, which still requires a considerable amount of space and does not require operation. It becomes easy. Another problem is that the roll film needs to face perpendicular to the optical axis (horizontal) under the lens system 4, so the roll film that comes out vertically from the reels 1 and 1' is turned horizontally by 90 degrees. This means that you have to twist it. When twisting a roll film, do not twist it too quickly or it will become strained.
Since the twist is done gently there, a considerable amount of space is required for a 90° twist.

Incidentally, Japanese Utility Model Application Publication No. 53-65735 discloses a technique in which the reel is provided diagonally to prevent the roll film from twisting rapidly. However, between the reel and the turn roller for twisting the roll film, there is a mechanism to keep the angle with respect to the turn roller constant even if the direction of the roll film in and out of the reel changes depending on the amount of winding of the roll film. The various rollers are arranged and require extra space. The reason is that the shape of the turn roller is simply a straight cylinder or a cone.
When the angle of the roll film relative to the turn roller changes as the amount of winding of the roll film changes,
This is because the twist may not be performed smoothly, making it difficult to adjust the position and angle of the turn roller and reel.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a roll film carrier that allows easy loading and unloading of roll film and frame feeding operations even in a narrow space.

In order to achieve this purpose, the configuration of the rolled film carrier of the present invention includes mounting shafts for reels provided diagonally on both left and right sides of the frame of the film carrier, and roll film between the reels attached to both mounting shafts. The left and right turn rollers are provided to straighten the film horizontally and guide it to the transparent film holding member, and the left and right guide rollers are provided between these left and right turn rollers. It is characterized by having a protrusion and having a tapered inner side of the flanges at both ends.

The present invention will be explained below with reference to FIGS. 2 to 5. Fig. 2 is a front view showing an embodiment of the roll film carrier of the present invention, Fig. 3 is a plan view thereof, Fig. 4 is a sectional view of the reel portion, and Fig. 5 is a sectional view showing an example of the turn roller. be.

The roll film carrier of this embodiment has a structure that can also be used as a fish film carrier. In FIGS. 2 and 3, reference numeral 10 denotes a carrier frame, which has a structure that allows it to move in the vertical and horizontal (X, Y) directions on the table 3 on a plane perpendicular to the optical axis of the lens system. Note that the guide rails and the like are omitted, but any known ones may be used. A lower glass 12 serving as a transparent film holding member is fixed to the frame 10, and an upper glass 11 is attached with pins 13 so as to be openable and closable. The fish film is held between both glasses 11 and 12, and the roll film 5 is held by turn rollers 21 and 22 and guide rollers 23 and 24 interposed between a pair of reels 1 and 1'.
The frame is fed through between the glasses 11 and 12.

Arms 14, 1 are provided on both the left and right sides of this frame 10.
Reel bases 16 and 17 are tilted and fixed to each arm 14 and 15, and mounting shafts 18 and 1 of reels 1 and 1' are mounted on each base 16 and 17, respectively.
19 is installed. The reels 1, 1' are fitted onto the mounting shafts 18, 19, respectively, and are installed at an angle with respect to the horizontal. As shown in FIG. 4, it is rotated by a removable handle 20 that fits into the tip of the mounting shaft and engages with the reel. 20a
is an engagement pin. The mounting positions of the mounting shafts 18 and 19 are set downward to such an extent that the lower ends of the reels 1 and 1' do not come into contact with the table 3 during mounting. Note that the mounting shafts 18 and 19 themselves may be rotated.

Since the reels 1 and 1' are inclined, turn rollers 21 and 22 are attached to each arm 14 and 15 of the frame 10 as a first step to straighten the rolled film 5 that enters and leaves obliquely from these reels. There is. As shown in detail in FIG. 5, the turn rollers 21 and 22 are provided with an annular projection 21a in the center and tapered portions 21b inside the flanges at both ends. With the turn roller shown in FIG. 5, the angle at which the roll film 5 is wound around the turn rollers 21, 22 can change from a solid line to a broken line depending on the amount of winding of the roll film, and twisting can be performed smoothly.

Guide rollers 23 and 24 are provided to horizontally guide the rolled film between the turn rollers 21 and 22 between the upper and lower glasses 11 and 12. The guide rollers 23 and 24 may be attached to both the left and right ends of the frame 10, but in this embodiment, in order to prevent the rolled film 5 from rubbing against the glasses 11 and 12 during frame feeding, the guide rollers 23 and 24 are attached to both the left and right ends of the upper glass 11. It is installed on. That is, as can be seen from FIG. 2, the guide rollers 23 and 24 are connected to the turn roller 2.
Since it is located at a lower position than the guide rollers 23 and 22, when winding the roll film 5, the guide rollers 23 and 2
4 acts to lift the upper glass 11, thereby preventing the roll film 5 from rubbing against the glass. In addition, in FIG. 3, 25 is a guide roller mounting member, which is fixed to the upper glass 11.

As explained above, in the present invention, the pair of reels 1 and 1' of the roll film 5 are installed obliquely with respect to the horizontal. Therefore, it does not require much space between the screen and the table. In other words, since the reel is diagonal, its height is lower than when it is placed vertically, and since it is not necessary to put your hand all the way in to attach and remove the reel or operate the handle, it can be operated like a conventional horizontally placed reel. No need to take up extra space. Furthermore, compared to horizontal installation, the tip of the mounting shaft is easier to see when the reel is mounted, making the mounting work easier. In addition, the twist angle to make the roll film horizontal under the lens system is only a few tens of degrees.
Since it is smaller than when placed horizontally, no excessive force is applied to the roll film, and less space is required for twisting.

In addition, there is an annular protrusion in the center of the turn roller, and the inside of the flanges at both ends are tapered.
Since the angle at which the roll film is wound around the turn roller can be changed depending on the amount of winding of the roll film, the roll film can be twisted smoothly even without a guide roller between the turn roller and the reel.

As mentioned above, the reel is installed diagonally, the turn roller has an annular protrusion in the center, and the inner sides of the flanges at both ends are tapered, making it easy to attach and detach the roll film and feed the frame even in a narrow space. . This allows microfilm readers and printers to become smaller and cheaper.

In the above embodiment, the reels 1 and 1' of the roll film are installed on the frame 10 of a fish film carrier, so that the film carrier can be used for both purposes. However, it goes without saying that the present invention can be applied to film carriers exclusively used for roll films. Furthermore, it can be applied not only to microfilm but also to carriers for normal-sized roll films.

[Brief explanation of the drawing]

1A and 1B are simplified explanatory diagrams for explaining a conventional roll film carrier, FIG. 2 is a front view showing an embodiment of the roll film carrier of the present invention, FIG. 3 is a plan view thereof, and FIG. The figure is a cross-sectional view of the reel portion, and FIG. 5 is a cross-sectional view showing an example of the turn roller. In the drawing, 1 and 1' are reels, 2 is a screen,
3 is a table, 4 is a lens system, 5 is a roll film, 10 is a carrier frame, 11 is an upper glass, 12 is a lower glass, 14 and 15 are arms, 16
and 17 are reel bases, 18 and 19 are reel mounting shafts, 20 is a handle, 21 and 22 are turn rollers, 21a is an annular projection thereof, 21b is a tapered portion, and 23 and 24 are guide rollers.

Claims (1)

[Claims for Utility Model Registration] (1) The reel mounting shafts are installed diagonally on both the left and right sides of the film carrier frame, and the rolled film between the reels attached to both mounting shafts is made transparent by straightening the inclination to horizontal. left and right turn rollers provided to guide the film to the film holding member,
A roll film carrier comprising left and right guide rollers provided between these left and right turn rollers, wherein the left and right turn rollers have an annular projection in the center and the inner sides of the flanges at both ends are tapered. . (2) Utility Model Registration The roll film carrier according to claim 1, wherein the guide roller is attached to an upper member of the film holding member that can be opened and closed. (3) In the claims for utility model registration, page 1 or paragraph 2, the film holding member has a size to hold the film, and the frame is configured to be movable on a plane perpendicular to the optical axis. A roll film carrier that is characterized by: