JP5225510B1 - Photo roll film - Google Patents

Abstract

Provided is a photographic roll film that can be photographed by changing the screen size using a general 120-size film or 220-size film camera.
SOLUTION: The silver salt films 4 and 24 that are long in the winding direction, the light shielding papers 5 and 25 provided at least at the front and rear of the silver salt films 4 and 24, and the spool 2 around which these are wound. , Roll film for photography 1, 21 used in a camera for 120 size film or 220 size film, wherein the width dimension T of the silver salt films 4, 24 is used for 120 size film or 220 size film It is formed smaller than the film width.
[Selection] Figure 1

Description

  The present invention relates to a photographic roll film that can be used in 120-size film and 220-size film cameras.

  120 size film and 220 size film (generally also referred to as Brownie (registered trademark) film), a silver salt film of 61.5 mm width (about 6 cm width) is placed on the light shielding paper with the center in the width direction aligned. The silver salt film is wound around a spool so as to be wrapped with light-shielding paper. In such a wound state, the silver salt film is not exposed to external light.

  The 120-size film uses a light shielding paper longer than the total length of the long silver salt film, and the silver salt film is covered over the entire length by the light shielding paper. On the other hand, a silver salt film about twice as long as the 120 size film is used for the 220 size film. Further, in the 220 size film, the light shielding paper is provided only at the front part and the rear part in the length direction of the silver salt film, and is not provided at the center part thereof. For this reason, the diameter when the light-shielding paper is wound around the spool is reduced by the amount that is not in the center, so that the 120-size film and the 220-size film have almost the same wound outer diameter (see, for example, Patent Documents 1 and 2). .

  Further, a camera using a 120-size film or a 220-size film (generally also referred to as a medium format camera or a Brownie (registered trademark) camera) has a fixed screen size that can be photographed depending on the type. More specifically, as the screen size, there are 6 × 4.5, 6 × 6, 6 × 7, 6 × 8, and 6 × 9 cm types based on a 6 cm width, for example, 6 × 4.5. The screen size of centimeters and 6 × 8 centimeters matches the aspect ratio of a general magazine. As described above, a camera having a fixed screen size is selected and used in accordance with the application.

JP 2004-245968 A JP-A-11-95377

  However, with a combination of a conventional camera for 120-size film or 220-size film and a 120-size film or 220-size film, basically, it is not possible to take a photograph other than the screen size described above. As an exception, there are some cameras that can be used by switching between two screen sizes (6x6 and 6x7), but this camera selects one of the above screen sizes. It is not possible to shoot with other aspect ratio screen sizes.

  Conventionally, since it is impossible to shoot with a screen size other than the above-described screen size, a photographer who shoots does not shoot a subject with a clear awareness of aspect ratios other than the screen size described above. Conventionally, there are photographs with aspect ratios other than the above-mentioned screen size as the resulting photographs, but these are crops that have been cropped at the top (or bottom, left and right) of the photograph to change the aspect ratio arbitrarily. It is. This is because the developer (or photographer) performs trimming in order to obtain a special photograph at the stage of development after photographing, and the photographer who is the photographer visually recognizes the contour of the subject, and the screen described above. It was not taken with an aspect ratio other than size taken into account.

  The present invention has been made in view of the above-described circumstances, and its purpose is to use a general 120-size film or 220-size film camera to change the screen size and take a picture. It is for providing a roll film.

In order to solve the above-mentioned problems, the present invention provides a silver salt film that is long in the winding direction, a total length of the silver salt film or light shielding paper provided at least at the front and rear, and the light shielding paper provided with the light shielding paper. A roll for photographic use, which is used by being loaded into a camera for 120 size film or 220 size film, wherein the spool is used for the 120 size film or 220 size film. It has compatibility with a camera, and the width dimension of the silver salt film is smaller than the film width used in the 120 size film or the 220 size film.

  Moreover, the said silver salt film can use what cut | disconnected the silver salt film of 120 size film or 220 size film marketed along the winding direction, and made the film width small.

  Further, as the silver salt film, a commercially available 35 mm film can be used as it is, or a film obtained by cutting the 35 mm film along the winding direction to reduce the film width can be used.

In the present invention, the center position in the width direction of the light-shielding paper and the center position in the width direction of the silver salt film having a film width smaller than the silver salt film of the 120 size film or the 220 size film, A film winding device for winding light-shielding paper and the silver salt film on a spool, the support member rotatably supporting the spool having compatibility with a camera for 120 size film or 220 size film ; And a width restricting portion that is movable in parallel along the rotation axis of the spool and restricts the position in the width direction of the silver salt film having a small film width.

Furthermore, the present invention provides a silver salt film of 120 size film or 220 size film at the center position in the width direction of the light shielding paper wound around a spool having compatibility with a camera for 120 size film or 220 size film. A silver salt film placement jig for matching the center position of a silver salt film having a smaller film width, comprising a front surface portion and a back surface portion formed by folding a transparent plate member in half, The back surface portion is formed such that the center lines drawn on the front surface portion and the back surface portion coincide with each other in a state where the front surface portion and the back surface portion are completely overlapped.

In the photographic roll film according to the present invention, the spool is compatible with the camera for the 120 size film or the 220 size film, and the width of the silver salt film is the 120 size film or the 220 size. Since it is formed smaller than the film width used for the film, it is possible to take a photograph having a size different from the screen size that can be taken with a medium format camera. In addition, it is possible to take pictures with different screen sizes by using a function (for example, tilt mechanism) peculiar to a medium format camera.

  In addition, by using a silver salt film with a small film width, a photographer who is a photographer can take a picture with a clear awareness of the aspect ratio of the subject at the time of shooting. When a professional photographer takes a picture, he often sees the action of creating a square with his finger to image the outline of the subject, but it is very important for the photographer to be aware of the outline of the photograph as a sensation when shooting. is there. In the photographic roll film of the present invention, the photographer can photograph the subject while clearly conscious of this aspect ratio.

  In the film winding device according to the present invention, the support member (arm) that rotatably supports the spool, and the silver salt film having a small film width that is movable in parallel along the rotation axis of the spool. A width restricting portion for restricting the position in the width direction, so that the position in the width direction of the width restricting portion is adjusted so that the center position of the film width T of the silver salt film is the center position in the width direction of the light shielding paper. Can be wound around the spool in a state in which these center positions are matched. As a result, the film winding operation can be easily performed in a dark room with poor visibility.

  Furthermore, the silver salt film arrangement jig according to the present invention includes a front surface portion and a back surface portion formed by folding a transparent plate member in half, and the front surface portion and the back surface portion include the front surface portion and the back surface portion. Are centered on the back surface of the light shielding paper so that the center lines drawn on the front surface portion and the back surface portion coincide with each other. It is placed on the surface of the silver salt film placement jig on the black surface of the light-shielding paper by arranging it so that it matches the line, and completely overlapping the light-shielding paper between the front and back sides. Centerline can be displayed. Accordingly, by aligning the center position of the silver salt film in the width direction with this center line, the operation of aligning the center positions of the light shielding paper and the silver salt film can be easily performed in a dark room with poor visibility. .

It is a perspective view of the roll film for photography of the 120 size film which concerns on embodiment of this invention, Comprising: A part of roll film main body is the state wound around the spool. FIG. 2 is a development view showing the light shielding paper of FIG. 1 as a single unit, as viewed from the back side. It is a perspective view of the photographic roll film of 220 size film which concerns on embodiment of this invention, Comprising: A part of roll film main body is the state wound around the spool. FIGS. 4A and 4B are development views showing the light shielding paper of FIG. 3 as a single unit, in which FIG. 3A shows the front side of the light shielding paper divided into two, and FIG. It is a schematic diagram of the jig for silver salt film arrangement. (A) is a front view of the jig for opening attached to the opening part facing the film surface of a medium format camera, (B) is a front view of the jig for imaging range confirmation for confirming an imaging range. . It is a perspective view which shows the whole film winding apparatus.

  Hereinafter, photographic roll films 1, 21 (see FIGS. 1 and 3), silver salt film placement jig 40 (see FIG. 5), opening jig 61 and imaging range confirmation according to the embodiment of the present invention. The jig 62 (see FIG. 6) and the film winding device 90 (see FIG. 7) will be described in detail with reference to the drawings. The directions of “width direction” and “winding direction” used in the following description refer to the directions shown in FIGS. 1 to 7, and the expressions “front side (inside)” and “back side (outside)” are shown in FIG. It is assumed that it is viewed from the upper side of FIG.

The photographic roll films 1 and 21 can be used for a 120-size film or a 220-size film camera (hereinafter referred to as a medium format camera).
This medium format camera can use a larger film area than a camera for a 35 mm film (a silver salt film that is widely used in general) (the screen size of a camera for a 35 mm film is 2). The screen size of the medium format camera is 6 × 4.5, 6 × 6, 6 × 7, 6 × 8, 6 × 9 centimeters, while it is 4 × 3.6 centimeters (2: 3). Therefore, when developing with the same photo size, the medium format camera can take a high-image photo with abundant gradation.

In addition, the medium format camera can adjust the depth of field over a wide range.For example, when shooting portraits or plants, the depth of field is reduced, and the foreground or background is blurred by focusing on the subject. You can also use the skill.
In addition, some medium format cameras have a tilt mechanism similar to that of a large 4 × 5 inch camera (the intentional change of the basic pattern of vertically crossing the optical axis of the photographic lens to the center of the screen (film surface)). Some have a mechanism that can change the imaging effect and produce an expression effect that cannot be taken with a basic pattern.

Also, after taking a photo with a medium format camera, you can take a picture of another subject twice by taking a picture again by inverting the front and back of the silver salt film placed on the light-shielding paper. Is also possible. Such techniques can be applied to black and white (black and white film), negative color, and positive film for slides. According to this, it is possible to obtain a unique photograph in which two subjects having different colors are taken as one photograph.
As described above, the medium format camera has gained deep popularity among professional photographers and enthusiast photographers because it can make full use of its rich functions and techniques.

(1) 120-size film photographic roll film 1
FIG. 1 is a perspective view of a 120-size film photographic roll film 1, and FIG. 2 is a development view showing a single piece of light-shielding paper 5 used in the photographic roll film 1. The light-shielding paper 5 is viewed from the back side. It is a figure.

  As shown in FIG. 1, a photographic roll film 1 corresponding to a 120 size film is composed of a spool 2 that is detachably attached to a medium format camera, and a roll film body 3 that is wound around the outer periphery of the spool 2. Yes.

  The spool 2 is configured such that the roll film main body 3 is wound around a cylindrical outer peripheral surface, and collar portions 2A that cover both ends in the width direction of the wound roll film main body 3 are formed at both upper and lower ends thereof. ing. This collar portion 2A regulates the winding position of the roll film body 3 so that the wound roll film body 3 is wound straight in the winding direction. Further, the collar portion 2A prevents the silver salt film 4 from being exposed from the end in the width direction in a state where the roll film body 3 is wound around the spool 2. The shape and structure of the spool 2 is compatible among various medium format cameras currently in use.

  As shown in FIG. 1, the roll film body 3 corresponding to a 120 size film is composed of a silver salt film 4 having a longitudinal direction in the winding direction and a light shielding paper 5 covering the entire back side of the silver salt film 4. ing. This silver salt film 4 is arranged in such a manner that the front surface 4A as the imaging surface faces inward and the back surface 4B of the silver salt film 4 and the surface 5A of the light shielding paper 5 are in contact with each other.

  As shown in FIG. 2, the light shielding paper 5 is formed long in the winding direction similarly to the silver salt film 4, and the front end portion 5A1 and the rear end portion 5B1 are formed narrow. The rear end 5B1 is inserted into a slit 2B (see FIG. 7) formed in the spool 2, and the roll film body 3 is wound around the spool 2 by rotating the spool 2.

  The entire surface 5A of the light shielding paper 5 is colored in black, and is attached so that the back surface 4B of the silver salt film 4 is in contact with the surface 5A side. Further, as shown in FIG. 1, the front end portion 4 </ b> A <b> 1 in the longitudinal direction of the silver salt film 4 is positioned and adhered to the surface 5 </ b> A of the light shielding paper 5 with the adhesive tape 10.

  Various characters are entered on the back surface 5B of the light shielding paper 5 as shown in FIG. These characters can be confirmed from a viewing window provided in the medium format camera in a state where the roll film body 3 is set in the medium format camera. For example, the size characters 6 indicating that the photographic roll film 1 is 120 size, the number of images taken when the film is fed, and the like are entered.

  Further, on the back surface 5B of the light shielding paper 5, the adhesion position 7 indicating the position of the tip 4A1 of the silver salt film 4, the START line 8 indicating the starting position of the silver salt films 4 and 24, and the roll film body 3 A center line 9 indicating the center in the winding direction is displayed. The adhesion position 7 is for aligning the front end 4A1 of the silver salt film 4 with this position when the above-described silver salt film 4 is disposed on the light shielding paper 5. The START line 8 is set in accordance with the start position of the camera when the photographer sets the photographic roll film 1 in the camera. The center line 9 is important for aligning the center position of the silver salt film 4 in the width direction with the center position of the light shielding paper 5 in the width direction, as will be described in detail later. These characters and lines are drawn with special display characters, which will be described later in detail, so that they can be fully recognized even in a dark room.

As shown in FIG. 1, the silver salt film 4 is formed smaller than the film width (61.5 mm width) of a silver salt film used in a conventional 120 size film. This film width T is obtained by cutting the film width of a silver salt film used in a commercially available 120-size film in parallel along the winding direction to make it smaller. For example, when the film width T is cut in half (about 30 mm width) and the photographic roll film 1 is used with a medium format camera having a screen size of 6 × 6 cm, the screen size is 3 × 6 cm (so-called panoramic size). , Landscape (longitudinal) size) can be taken. Further, when used with a 6 × 7 cm medium format camera, it is possible to take a photo of a further horizontally (vertically long) size of 3 × 7 cm.
In this way, by cutting and using the film width T with an arbitrary width dimension, it becomes possible to take an image with various screen sizes that have never existed before.

  Moreover, the silver salt film 4 is a film other than the silver salt film used in the 120 size film, and may use, for example, another film manufactured and sold by a film manufacturer. For example, a commonly available 35 mm film (2.4 × 3.6 cm) can be used. For example, if a film body 3 using this 35 mm film is created using a 6 × 6 medium format camera, a picture having a screen size of 2.4 × 6 cm can be taken.

  In addition, perforations (a plurality of square holes) for feeding the film in the winding direction are formed at both ends in the width direction of the 35 mm film, and it is possible to take an image on the perforation portion. For this reason, in photographs taken using a medium format camera, it is possible to develop unusual photographs in which perforations appear on the top and bottom (or left and right) of the photograph by developing so that the perforation portion remains.

  Furthermore, what cut | disconnected a 35 mm film along the winding direction as the silver salt film 4 can also be used. In this case, an arbitrary screen size is possible, and it is also possible to take a picture with a perforation portion left on either the upper side or the lower side.

(2) 220-size film photographic roll film 21
FIG. 3 is a perspective view of the 220-size film photographic roll film 21, and FIG. 4 is a development view showing the light shielding paper 25 used in the photographic roll film 21 as a single unit. The figure seen from the front surface 25A, (B) is the figure which looked at the light shielding paper 25 from the back surface 25B.

  A photographic roll film 21 corresponding to a 220 size film is composed of a spool 2 and a roll film body 23 as shown in FIG. The spool 2 is the same as that used in the 120-size film photographic roll film 1 described above, and is compatible with each other.

  As shown in FIG. 3, the 220-size film photographic roll film 21 includes a silver salt film 24 having a longitudinal direction in the winding direction. This silver salt film 24 has a length approximately twice that of the 120-size silver salt film 4 and can ensure twice the number of shots. Further, as shown in FIG. 3, unlike the 120 type, the light shielding paper 25 is not configured to cover the entire length of the silver salt film 24, and the front end portion and the rear end portion of the silver salt film 24 in the longitudinal direction. Each of which is divided into two parts (see FIGS. 4A and 4B). This structure prevents exposure by the light-shielding paper 25 at both ends when the photographic roll film 21 is first set in the medium format camera and when the photographic roll film 21 is taken out from the medium format camera after taking an image. It is. Note that the central portion is wound inside the camera at the time of imaging, and therefore is not exposed to external light except for shooting.

  Similarly to the 120-type silver salt film 4, the 220-size silver salt film 24 has a surface 24A that is an imaging surface facing inward, and the back surface 24B of the silver salt film 24 and the surface 25A of the light shielding paper 25 are in contact with each other. Has been placed. Moreover, the silver salt film 24 is arrange | positioned toward the inner surface 24A which is an imaging surface. As will be described in detail later, the silver salt film 24 is positioned on the surface 25A of the light shielding paper 25 and fixed to the surface 5A of the light shielding paper 25 by the adhesive tape 10.

  As shown in FIG. 4B, on the back surface 25B of the light shielding paper 25, as in the 120 type light shielding paper 5 described above, characters and the number of images indicating that the film is 220 size, adhesion position 7, START A line 8, a center line 9 and the like are drawn. Further, on the back surface 25B, a cut line 29 for cutting a corner portion 27 (details will be described later, see FIG. 3) of the light shielding paper 25 in accordance with the film width T is drawn.

  Further, as shown in FIG. 4A, the entire surface 25A of the light shielding paper 25 is colored in black. However, the surface 25A differs from the 120 type light shielding paper 5 in that part of the black surface. The film width display lines 28A, 28B, 28C, and 28D are drawn in white. These film width display lines 28A, 28B, 28C, and 28D are drawn symmetrically in the width direction around the center line 9 drawn on the back surface 25B of the light shielding paper 25. Also. Since the film width display lines 28A, 28B, 28C, and 28D are drawn at positions where the silver salt film 24 is not disposed, light is reflected by the white line portions of these film width display lines 28A, 28B, 28C, and 28D. It is supposed not to.

  These film width display lines 28A, 28B, 28C, and 28D are used as a guide for the center position when the roll film main body 23 is wound. More specifically, since the 220-size light shielding paper 25 is separated at the front end portion and the rear end portion, it is difficult to wind the silver salt film 24 in accordance with the center position of the light shielding paper 25. Therefore, the center position of the silver salt film 24 can be appropriately corrected while performing the winding operation using these film width display lines 28A, 28B, 28C, 28D as a guide.

This silver salt film 24 is formed smaller than the film width (61.5 mm width) of the silver salt film used in the conventional 220 size film, like the 120 type silver salt film 4, and is a medium format camera. By taking a picture with, it becomes possible to take an image with various screen sizes (such as a wide horizontal (vertically long) size) that has never been seen before.
Similarly to the description with the 120 size, a 35 mm film can be used to take a picture with an unprecedented screen size, or a unique picture using perforation can be taken.

(3) Silver salt film placement jig When using a medium format camera, in order to match the center position of the subject seen from the viewfinder with the center position of the subject actually photographed on the film, The center position in the width direction is set to coincide with the center position in the width direction of the light shielding paper. Therefore, even when the silver salt films 4 and 24 having a film width T smaller than the film width of a commercially available 120 size film or 220 size film are set on the light shielding papers 5 and 25 as in the present invention, the silver salt The center position in the width direction of the films 4 and 24 needs to be aligned with the center position in the width direction of the light shielding papers 5 and 25. However, when the film width T of the silver salt films 4 and 24 is an arbitrarily small dimension, it is difficult to set these center positions together. Therefore, this silver salt film arrangement jig 40 is required.

FIG. 5 is a schematic diagram of the silver salt film placement jig 40.
The silver salt film placement jig 40 is formed by folding a transparent resin thin plate (for example, a thin acrylic plate, a plate-like film formed of a PET material, etc.) in half, and is located on the front side. 1 surface part 41, 2nd surface part 42 (these are named generically, a surface part), and the 1st back surface part 43 and the 2nd back surface part 44 (these are named generically) formed by bend | folding back by the bending part 40A And the back surface portion). This silver salt film arranging jig 40 is used in such a manner that the light shielding papers 5 and 25 are sandwiched between the folded inner sides. Moreover, the silver salt film arrangement | positioning jig | tool 40 is devised so that it can be used by both 120 size and 220 size.

  As shown in FIG. 5, the first surface portion 41 and the second surface portion 42 are cut in the width direction by a cutting portion 51, and are formed to be able to be opened and closed independently around the bent portion 40 </ b> A. Similarly, the first back surface portion 43 and the second back surface portion 44 are cut in the width direction by the cutting portion 52, and are formed so as to be independently openable and closable around the bent portion 40A.

  A center line 53 is drawn on each of the front surface portions 41 and 42 and the back surface portions 43 and 44 in parallel with the ridge line of the bent portion 40A. This center line 53 is obtained when all the surface portions (the front surface portions 41 and 42 and the back surface portions 43 and 44) have the center lines 53 when the front surface portions 51 and 52 and the back surface portions 53 and 54 are completely folded and stacked. It comes to be on a straight line.

  In addition, film width display lines 54A, 54B, 54C, and 54D drawn symmetrically in the width direction with the center line 53 interposed therebetween are drawn on the second front surface portion 42 and the first back surface portion 43. These display lines 54 </ b> A, 54 </ b> B, 54 </ b> C, 54 </ b> D are used as a guide for arranging the silver salt films 4, 24 with a reduced film width T in accordance with the center line 53.

  Furthermore, the first front surface portion 41 and the first back surface portion 43 are drawn with an adhesive tape affixing frame 55A that indicates the bonding position of the silver salt film 24 when the size is 220. Similarly, on the second front surface portion 42 and the second back surface portion 44, an adhesive tape affixing frame 55B that indicates the bonding position of the silver salt film 4 is drawn when the size is 120. These adhesive tape affixing frames 55A and 55B overlap each other when the first front surface portion 41 and the first back surface portion 43, and the second front surface portion 42 and the second back surface portion 44 are completely folded and stacked. (Match).

  Further, on the first front surface portion 41 and the first back surface portion 43, cut lines 56 for displaying a guide for cutting the front end portion of the light shielding paper 25 are provided at both lower portions in the width direction of the 220-size adhesive tape affixing frame 55A. It is drawn.

Next, the usage method of the silver salt film arrangement | positioning jig | tool 40 is demonstrated.
In the case of the 120 size, first, the first surface portion 41 and the second surface portion 42 of the silver salt film arranging jig 40 are in contact with the back surface 5B of the light shielding paper 5, and the first back surface portion 43 and the second back surface. The light shielding paper 5 is sandwiched from the front and back by the silver salt film arranging jig 40 so that the portion 44 contacts the surface 5A of the light shielding paper 5. The center line 53 drawn on the second front surface portion 42 is arranged so as to overlap the center line 9 (see FIG. 2) drawn on the back surface 5B of the light shielding paper 5, and a 120-size adhesive tape affixing frame. The center in the winding direction of 55B is set so as to come to the adhesion position 7 (see FIG. 2) drawn on the back surface of the light shielding paper 5.

  Next, the silver salt film 4 is set on the surface 5 </ b> A of the light shielding paper 5. At this time, the front end portion 4A1 of the silver salt film 4 is disposed on the adhesive tape attaching frame 55B of the second back surface portion 44 of the set silver salt film arranging jig 40. Further, the center position in the width direction of the silver salt film 4 is set to the center line 53 (center line 9) based on the center line 53 drawn on the first back surface portion 43 and the film width display lines 54A, 54B, 54C, 54D. To match. In this state, the light shielding paper 5 and the silver salt film 4 are sandwiched between the second front surface portion 42 and the first back surface portion 43, and fixed so that the set position does not shift. And if the 2nd back surface part 44 is opened centering on the bending part 40A, the front-end | tip part 4A1 of the silver salt film 4 will come out from the jig | tool 40 for silver salt film arrangement | positioning, and this front-end | tip part 4A1 is adhesive tape. Adhere with 10. Thereby, the position (tip position in the winding direction and center position in the width direction) of the tip part 4A1 of the silver salt film 4 is determined.

  The loaf film body 3 is wound up from the tip portion 4A1 (5A1) side from the state where the tip portion 4A1 is fixed. And it sticks on the surface 5B of the light shielding paper 5 using the adhesive tape 10 at the rear-end part (not shown) of the silver salt film 4. FIG. Thereby, even if it is the silver salt film 4 with the small film width T, the jig | tool 40 for silver salt film arrangement | positioning can be used and the center position of the width direction can be set easily.

  On the other hand, in the case of the 220 size, the front surface portions 41 and 42 and the back surface portions 43 and 44 are set upside down with respect to the light shielding paper 25 as compared with the case of the 120 size. More specifically, first, the first back surface portion 43 and the second back surface portion 44 of the silver salt film arranging jig 40 are in contact with the back surface 25B of the light shielding paper 25, and the first surface portion 41 and the second surface portion 42 are also in contact. The light shielding paper 5 is sandwiched from the front and back by the silver salt film arranging jig 40 so that the surface of the light shielding paper 25 is in contact with the surface 25A. Then, the center line 53 drawn on the first back surface portion 43 is arranged so as to overlap the center line 9 drawn on the back surface 25B of the light shielding paper 25, and in the winding direction of the 120-size adhesive tape sticking frame 55A. It is set so that the center is at the bonding position 7 (see FIG. 4) drawn on the back surface of the light shielding paper 25.

  The subsequent procedure is the same as the 120 size type described above. However, in the case of 220 size, according to the film width T of the silver salt film 4, the corner | angular part 27 (refer FIG. 3) of the light shielding paper 25 must be cut diagonally. This is because when the silver salt film 24 having a small film width T is set in a medium format camera, the corner 27 may be caught during winding. Therefore, when the silver salt film 24 is set on the light shielding paper 25, the corner portion 27 is aligned with the film width T of the silver salt film 24 along the cut line 56 drawn on the silver salt film arranging jig 40. The work which cuts diagonally is necessary.

  Moreover, the operation | work set using this silver salt film arrangement | positioning jig | tool 40 is performed in the place (for example, dark room etc.) where the silver salt films 4 and 24 are not exposed. At this time, for example, the worker works using an instrument such as a simple night vision scope. Therefore, the display of the center line 53, the film width display lines 54A, 54B, 54C, 54D, the adhesive tape pasting frames 55A, 55B, etc. drawn on the silver salt film arranging jig 40 is a character that can be visually recognized with a night vision scope. (Hereinafter referred to as special display characters).

  The special display character is a character in which a gray portion is provided in the outline portion of a black character (or line). This special display character is obtained, for example, by overwriting a black character on the gray character so that the gray portion remains as an outline. In addition, the gray portion is a character other than black, for example, a solid-colored character in which the black hue is closer to the white side than the black character is preferable. It may be drawn with characters drawn so as to appear gray overall (compared to black characters).

  By using this special display character, when viewing outside the dark room, the operator can normally see the black character, while when using the night vision scope in the dark room, the black character is visible. Compared with the case where only a black character is drawn, the presence of a gray portion makes it easier to visually recognize black characters. This makes it easier for the operator to check the characters and lines, and allows the work to be performed more efficiently.

  This special character can also be used for characters and lines (such as the center line 9) described on the back surfaces 5B and 25B of the light shielding papers 5 and 25 described above. Thereby, the visibility in a dark room can be improved and various operations can be performed efficiently.

(4) Opening jig 61 and imaging range confirmation jig 62
When the film width T of the silver salt films 4 and 24 is smaller than the conventional silver size film of 120 size and 220 size films, the range that can be seen through the viewfinder of a single-lens reflex medium format camera and the imaging range that is actually shot Is different. For example, when the film width T is set to 2/3, the actual shooting range is 2/3 in the width direction, rather than the range that can be seen through the viewfinder of the medium format camera. For this reason, it is necessary to make it possible to confirm the actual shooting range through the viewfinder. Therefore, the range that can be imaged by the medium format camera is set in advance using the opening jig 61 and the imaging range confirmation jig 62.

  FIG. 6A shows an opening jig 61 attached to the opening facing the film surface of the medium format camera, and FIG. 6B shows an imaging range confirmation jig 62 for confirming the imaging range.

  Here, a simple structure of the medium format camera will be described. An opening portion facing the film surface (hereinafter referred to as an opening portion) is an opening portion facing the silver salt films 4 and 24 set in the medium format camera. In the case of a single-lens reflex camera, the optical axis connecting the imaging lens and the above-described opening is positioned on a straight line. Thereby, by pressing (releasing) the shutter, the optical axis enters the film surface in a straight line. The range that can be seen from the opening is the range that can actually be photographed.

  On the other hand, a medium format camera is provided with a viewfinder for a photographer to visually confirm a photographing range. This viewfinder is installed at a position shifted from the opening by reflecting the optical axis described above via a mirror. More specifically, before pressing the shutter, the view from the optical axis reflected by the mirror can be checked with the viewfinder, and the mirror moves when the shutter is pressed, opening the landscape from the optical axis. It enters the film surface from the part and can be photographed on the film. For this reason, the two jigs described above are required in order to match the imaging range seen from the opening and the imaging range seen from the viewfinder.

  In the case of a twin-lens reflex camera, the imaging range at the opening and the imaging range that can be seen from the viewfinder are configured separately, so that the imaging range from the opening and the viewfinder are similarly matched. The above two jigs are required.

  The opening jig 61 is made of, for example, a milky white translucent sheet. As shown in FIG. 6A, the center 71 of the medium format camera and a plurality of screen frames 72 according to the screen size, 73 and 74 are drawn. More specifically, the screen frame 72 has a screen size of 6 × 4.5, the screen frame 73 has a screen size of 6 × 6, and the screen frame 74 has a screen size of 7 × 7. The size of the opening determined by the screen size of the medium format camera is adjusted. Used. The opening jig 61 is attached so as to cover the opening portion described above. As a result, the optical axis incident on the aperture from the imaging lens enters the aperture jig 61 so that a subject such as a landscape appears on a milky white surface.

  On the other hand, the imaging range confirmation jig 62 is made of, for example, a transparent sheet. As shown in FIG. 6B, a center line 81 and a plurality of symmetrically drawn across the center line 81 are arranged. Width confirmation lines 82, 83, 84, 85, 86 are drawn. These lines are drawn using the special marking characters described above.

  Then, the opening jig 61 is attached to the opening portion with the center 71 aligned. Thereafter, the subject is projected on the milky white surface of the opening jig 61 with the shutter opened. Then, the imaging range confirmation jig 62 is directed to the center 71 of the opening jig 61, and the range of the film width T is overlapped. This overlapped range is a range in which imaging can actually be performed on the film. This operation is performed in a state where the photographic roll films 1 and 21 are not mounted. It is also performed while checking the subject outside the dark room.

  Then close the shutter and watch the subject through the viewfinder. Then, the range confirmed using the opening jig 61 and the imaging range confirmation jig 62 is plotted on the viewfinder. As this plot, for example, an elongated linear tape may be prepared and pasted on the surface of the viewfinder. As a result, the range that can be actually captured on the film can be confirmed through the viewfinder.

  Note that the method described above is for a single lens reflex, but for a twin lens reflex, plotting the imageable range that can be seen through the viewfinder in the same procedure, except that there is no need to open the shutter. Can do.

(5) Film Winding Device FIG. 7 is a perspective view showing the entire film winding device 90.
The film take-up device 90 uses the silver salt film placement jig 40 described in (3) to position the tip portions 4A1 of the silver salt films 4 and 24 and adhere them with the adhesive tape 10, and then the silver salt film This is a jig for winding onto the spool 2 in a state in which the center position of 4 and 24 coincides with the center position of the light shielding paper.

  As shown in FIG. 7, the film winding device 90 includes left and right arms 91 and 91 (support members) that rotatably support the spool 2, a slide seat 92 that connects the two arms 91 and 91, and The slide seat 92 includes two width regulating portions 93 and 93 that are movable along the extending direction of the rotation axis of the spool 2 (along the width direction of the silver salt film).

  As shown in FIG. 7, the arms 91 and 91 are formed in a substantially L shape, and one end 91 </ b> A of the arm 91 is attached to the attachment groove 2 </ b> C (see FIGS. 1 and 3) of the spool 2. . In this state, the spool 2 can freely rotate with respect to the arm 91.

  The slide seat 92 is attached in such a manner that the other ends of the arms 91 and 91 are connected to each other. The slide seat 92 is provided in parallel with the rotation axis of the attached spool 2. In addition, two guide windows 92A and 92A are formed on the upper surface of the slide seat 92 to guide the two width restricting portions 93 to be exposed and the width restricting portions 93 to move in the width direction.

  The two width regulating portions 93 and 93 have a substantially U-shaped cross section, and are arranged so that the U-shaped opening sides of the two width regulating portions 93 and 93 face each other. Although the details will be described later, the U-shaped inner side surface 93A comes into contact with both end edges in the width direction of the silver salt films 4 and 24 having a small film width T.

  Further, the two width restricting portions 93 are integrally formed with the rack member 94 inside the slide seat 92. The two rack members 94 mesh with each other at a position facing the pinion member (not shown) inside the slide seat 92 (a position shifted by 180 degrees with respect to the pinion member). More specifically, the meshing is performed in a state where the two width regulating portions 93 are arranged symmetrically (equal distance from the center line 95) across the center line 95 of the spool 2. With these structures, when one width restricting portion 93 is moved, the other width restricting portion 93 is automatically moved to a symmetrical position with the center line 95 sandwiched by the engagement of the rack and pinion. The movement of the width restricting portion 93 is guided by the above-described guide windows 92 </ b> A and 92 </ b> A and moves in the direction along the rotation axis of the spool 2 (width direction).

  As a method of using this film winding device 90, first, the front end portions 4 </ b> A <b> 1 and 24 </ b> A <b> 1 of the silver salt film are bonded to the light shielding paper 5 and 25 with the adhesive tape 10 using the silver salt film arranging jig 40. Then, the rear end portion 5B1 of the light shielding paper is inserted into the slit 2B of the spool 2.

  Next, the width restricting portion 93 is moved according to the width of the silver salt films 4 and 24 formed with a small film width T. At this time, the center surface of the film width T is automatically spooled by the action of the rack and pinion by bringing the inner side surface 93A of one width regulating portion 93 into contact with the edge in the width direction of the silver salt films 4 and 24. 2 center line 95.

  When the spool 2 is rotated from this state, the light shielding papers 5 and 25 are linearly wound by being regulated by the flange portion 2A of the spool 2, and the center position of the light shielding papers 5 and 25 and the center line 95 of the spool 2 are wound. Will match. Similarly, the silver salt films 4 and 24 are also wound up linearly with the position in the width direction regulated by the width regulating portion 93. Thereby, even if it is the silver salt films 4 and 24 with the small film width T, it can wind up easily, making the center position correspond with the center position of the light shielding paper 5 and 25. FIG.

  The winding operation using the film winding device 90 is performed, for example, by adhering the tip portions 4A1 and 24A1 of the silver salt films 4 and 24 to the light shielding paper 5 and 25 with the adhesive tape 10 and lowering the tip portion 5A1 of the light shielding paper. The photographic roll films 1 and 21 are hung in the stretched state on the side, and are wound up from below using the film winding device 90. Further, the photographic roll films 1 and 21 may be placed on a flat surface in a stretched state on a desk, and wound up by using a winding device 90 from the front end side. Since this winding work is also performed in a dark room with poor visibility, similarly to the work using the silver salt film arranging jig 40, the winding work is performed using the film winding device 90 in this way. It is possible to work more efficiently by performing.

According to the photographic roll films 1 and 21 according to the embodiment of the present invention, the width dimensions of the silver salt films 4 and 24 are formed smaller than the film width used in the 120 size film or the 220 size film. In particular, a commercially available 120-size film or 220-size film silver salt film is cut along the winding direction to reduce the film width. You can take pictures of different sizes. In addition, it is possible to take pictures with different screen sizes by using a function (for example, tilt mechanism) peculiar to a medium format camera.
In addition, the photographer who is a photographer can use the silver salt films 4 and 24 having a small film width T to take a picture with a clear awareness of the aspect ratio of the subject at the time of shooting.

  Moreover, since the silver salt films 4 and 24 use the commercially available 35 mm film as it is or cut the 35 mm film along the winding direction to reduce the film width, You can take a photo with a size different from the screen size that can be taken with a medium format camera. It is also possible to take an image of the perforation part of a 35 mm film and develop an unusual photograph in which the perforation part appears on the top and bottom (or left and right) of the photograph.

  Further, according to the film winding device 90 according to the embodiment of the present invention, the arm 91 that rotatably supports the spool 2 can be moved in parallel along the rotation axis of the spool 2, and the film width T Since the width restricting portion 93 for restricting the position in the width direction of the small silver salt films 4 and 24 is provided, the film width T of the silver salt films 4 and 24 is adjusted by adjusting the position in the width direction of the width restricting portion 93. By aligning the center position with the center position in the width direction of the light-shielding papers 5 and 25, the spool 2 can be rotated and wound while the center positions are matched. As a result, the film winding operation can be easily performed in a dark room with poor visibility.

  Furthermore, the silver salt film placement jig 40 according to the embodiment of the present invention includes front surface portions 41 and 42 and back surface portions 43 and 44 formed by folding a transparent plate member in half, 42 and the back surface portions 43 and 44, with the front surface portions 41 and 42 and the back surface portions 43 and 44 being completely overlapped, the respective center lines 53 drawn on the front surface portions 41 and 42 and the back surface portions 43 and 44. First, the center line of the back surface parts 43 and 44 is arranged so as to match the center line 9 drawn on the back surface 5B and 25B of the light shielding paper 5 and 25, and the front surface part 41 is formed. , 42 and the back surface portions 43, 44 so that the light shielding papers 5, 25 are sandwiched completely so that the black surface 5A, 25A of the light shielding papers 5, 25 is centered on the surface portions 41, 42. Line 53 can be displayedThereby, by aligning the center position in the width direction of the silver salt films 4 and 24 with the center line 53, the operation of aligning the center positions of the light shielding papers 5 and 25 and the silver salt films 4 and 24 can be performed in the field of view. It becomes easy to do it in a bad darkroom.

  The photographic roll film according to the embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. It is.

  For example, in the photographic roll films 1 and 21 in the present embodiment, the silver salt films 4 and 24 having a small film width T, the film width of a silver salt film used in a commercially available 120 size film or 220 size, The film is cut in parallel along the winding direction to make it smaller. For example, when a silver salt film having a small width is sold by a film manufacturer, the silver salt film may be used as it is. That is, regardless of the method for producing a silver salt film having a small film width T, those using a silver salt film having a small film width T are included in the technical idea of the present invention.

  In addition, the film winding device 90 in the present embodiment is a device that winds the light-shielding papers 5 and 25 together with the center lines of the narrow silver salt films 4 and 24, but various modifications are possible. . For example, the film winding device 90 may be provided with a cutting blade for cutting the silver salt film, and the silver salt film may be cut in the winding direction with the cutting blade while winding with the spool 2. If it does in this way, it can be used also as a film cutting device which cuts so that film width T of a silver salt film may be made small.

  Further, in the film winding device 90 in the present embodiment, the center position of the width restricting portion 93 is automatically determined using the rack and pinion, but the position of the width restricting portion 93 is manually set. You may adjust it. For example, the width restricting portion 93 may be manually moved in the width direction to be aligned with the center line 95, and the width restricting portion 93 may be fixed with a screw member after adjustment.

1 Photo roll film (120 size)
2 Spool 2A Collar 2B Slit 3, 23 Roll film body 4, 24 Silver salt film 4A, 24A Silver salt film surface (imaging surface)
4B, 24B Back surface of the silver salt film 4A1, 24A1 Front end portion of the silver salt film 5, 25 Light shielding paper 5A, 25A Front surface of the light shielding paper 5A1 Front end portion of the light shielding paper 5B, 25B Back surface of the light shielding paper 5B1 Rear end portion of the light shielding paper 6 Letter for size 7 Adhesion position 8 START line 9 Center line 10 Adhesive tape 21 Photo roll film (220 size)
27 Corner portion 28A, 28B, 28C, 28D Film width display line 29 Cut line 40 Silver salt film placement jig 40A Bending portion 41 First surface portion 42 Second surface portion 43 First back surface portion 44 Second back surface portion 51, 52 Cutting part 53 Center line 54A, 54B, 54C, 54D Film width display line 55A, 55B Adhesive tape affixing frame 56 Cut line 61 Jig for opening part 62 Jig for imaging range confirmation 71 Center 72, 73, 74 Screen frame 81 Center line 82, 83, 84, 85, 86 Width confirmation line 90 Film take-up device 91 Arm (support member)
91A One end portion of arm 92 Slide seat 92A Guide window 93 Width restricting portion 93A Inner side surface 94 Rack member 94A Tooth of rack member 95 Center line T Film width

Claims (5)

A silver salt film that is long in the winding direction, a light-shielding paper provided on the entire length or at least the front and rear of the silver salt film, and a spool around which the silver-salt film provided with the light-shielding paper is wound, A photographic roll film used by being loaded into a camera for 120 size film or 220 size film,
The spool is compatible with the camera for the 120 size film or the 220 size film, and the width dimension of the silver salt film is smaller than the film width used for the 120 size film or the 220 size film. A photographic roll film characterized by being formed.   2. The photograph according to claim 1, wherein the silver salt film is obtained by cutting a commercially available 120 size film or 220 size film silver salt film along the winding direction to reduce the film width. Roll film.   The silver salt film is obtained by using a commercially available 35 mm film as it is, or by cutting the 35 mm film along the winding direction to reduce the film width. A photographic roll film as described in 1. In the state where the central position in the width direction of the light shielding paper is matched with the center position in the width direction of the silver salt film having a film width smaller than the silver salt film of the 120 size film or the 220 size film, the light shielding paper and the silver salt A film take-up device for taking up a film on a spool,
A support member for rotatably supporting the spool having compatibility with a camera for 120 size film or 220 size film ;
A width regulating portion that is movable in parallel along the rotation axis of the spool and regulates the position in the width direction of the silver salt film having a small film width;
A film take-up device comprising: The film width is smaller than the silver salt film of the 120 size film or the 220 size film at the center position in the width direction of the light shielding paper wound on the spool having compatibility with the camera for the 120 size film or the 220 size film. A silver salt film placement jig that matches the center position of the silver salt film,
A front surface portion and a back surface portion formed by folding a transparent plate member in half, and the front surface portion and the back surface portion in a state where the front surface portion and the back surface portion are completely overlapped with each other. A silver salt film arranging jig, wherein the center lines drawn on the portions are formed to coincide with each other.

Images