JPH0521255U - Roll photo film - Google Patents

Abstract

(57) [Abstract] [Purpose] To increase the area of the information recording area of the photographic film on which the image forming area position detection display is formed without increasing the film width. In the film length direction, the length between image formation area position detection displays is shorter than the length of the image formation area determined by the exposure aperture of the camera. [Effect] The area of the information recording area can be increased, and various information can be recorded.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a roll photograph having an image forming area position detection display formed along the outer edge of an image forming area on which an image is formed, and an information recording area formed outside the image forming area in the film width direction. Regarding film.

[0002]

[Prior Art]

 In order to regulate the position and size of the image forming area on the film, the conventional 110 film or 126 film has an image forming area such as a screen frame along the outer edge of the image forming area where an image is to be formed. A position detection display is provided. This determines the size of one frame of the image forming area of the film, and further defines the relative position of the film with respect to the perforation for positioning. As a result, for example, the work efficiency in the laboratory is improved.

On the other hand, in order to improve print image quality, various information such as photographing information (presence or absence of strobe, color temperature, LV value, photographing distance, focal length of lens, subject contrast) is used by using optical means or other means. , Shooting date and time, shooting location, etc.), film information (film type, film manufacturing date, printing conditions, etc.), lab information (lab name, development date, printing conditions for simultaneous printing, etc.) It has been proposed in a patent application to record an image on a photographic film. (For example, JP-A-51-117632, JP-A-59-214023, JP-A-63-188644, JP-A-64-6933, 63-201645, 49-74019, 55-101932). No. 54-2115, No. 51-117632, No. 52-1333, No. 52-30429, No. 63-298233, No. 64-21432, and No. 50-30517. 55-101932, 54-2115, etc.).

However, a roll photographic film having both an image forming area position detection display and an information recording area, particularly a photographic information recording area has not yet been put into practical use, and its appearance has been strongly desired.

[0005]

[Problems to be solved by the device]

 In conventional 110 film and 126 film, the area of the image forming area (that is, the screen determined by the exposure aperture of the camera) is made larger than the area surrounded by the image forming area position detection display (for example, the screen frame). It covered the lack of accuracy in the relative position of the film with respect to the exposure aperture of the camera. However, in order to overlap the screen frame and the image, it was necessary to widen the line forming the screen frame. For this reason, when the information recording areas are formed at both ends of the film outside the image forming area in the film width direction, the area of the information recording area is insufficient and it becomes difficult to input various kinds of information as described above.

The present invention has been made in view of this point, and it is possible to increase the area of the information recording area of the photographic film on which the image forming area position detection display is formed without increasing the width of the roll photographic film. It is intended to provide a magnified roll photographic film.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, the present invention has an image forming area position detection display that is visualized by development and is formed so as to extend at least in the film width direction along the outer edge of each image forming area. In a roll photographic film in which information recording areas are formed at both ends of the film outside the image forming area, in the film length direction, the length between the image forming area position detection displays is the length of the image forming area. Provided is a roll photographic film, which is characterized in that it is formed into a shorter length.

In recent years, by providing a positioning guide rail in the film width direction on the camera side and fixing the relative position between the exposure aperture of the camera and the positioning mechanism in the film width direction, the exposure of the camera in the film width direction is fixed. It has become possible to greatly improve the accuracy of positioning the film with respect to the aperture. As a result, it is possible to print a print with sufficient accuracy only by overlapping the image forming area position detection display and the image forming area only in the film length direction.

If the image forming area position detection display extending in the film length direction along the outer edge of the image forming area is not formed, the area of the information recording area outside the image forming area in the film width direction can be enlarged, which is preferable. In order to clarify the boundary between the information recording area and the image forming area, an image forming area position detection display extending in the film length direction may be provided. In this case, in the film width direction, if the length between the image forming area position detection displays is formed to be longer than the length of the image forming area, the line width of the image forming area position detection display can be narrowed, and the information recording area can be reduced. Is preferable because the area can be expanded. As will be described later, the internal measurement value is used for the interval between the image formation area position detection displays.

In a preferred embodiment, the difference between the length of the image forming area in the film length direction and the interval between the image forming area position detection displays (hereinafter referred to as “ΔD _l ”) is 0. It is 6 mm or more and 2 mm or less, more preferably 1.5 mm or less, and further preferably 1.0 mm or less. The image forming area position detection display can be formed in any pattern. Generally, it is formed by a line such as a solid line, a dotted line, and a broken line, but it is also possible to specify only the positions of the four corners of the image forming area with dots, brackets and the like.

When the image forming area position detection display is formed by lines, in a preferred embodiment, the line width of the image forming area position detection display extending in the width direction of the film (hereinafter referred to as “W _l ”) is ΔD. _l / 2 or more. More specifically, W ₁ is 0.8 mm or more and 2 mm or less, more preferably 1.5 mm or less, and further preferably 1.2 mm or less.

When the lines are used to fill the space between the image forming regions in the film length direction, 1/2 of the distance between the image forming regions is set to W _l . In a preferred embodiment, the difference between the distance between the image forming area position detection and display in the film width direction and the length of the image forming area (hereinafter referred to as “ΔD _t ”) is 0. It is 4 mm or more and 1 mm or less, more preferably 0.8 mm or less, and further preferably 0.6 mm or less.

In a preferred embodiment, the line width (hereinafter referred to as “W _t ”) of the image forming area position detection display extending in the film length direction is 0.2 mm or more and 0.8 mm or less, and It is preferably 0.6 mm or less, more preferably 0.4 mm or less. The image forming area position detection display composed of the latent image formed by exposing in the film manufacturing process is visualized only after the developing process.

In a preferred embodiment, the difference between the density of the image formation area position detection display of the film after development and the density of fog measured through a status M red filter, green filter or blue filter (hereinafter referred to as ΔD _R and ΔD, respectively). _At least one of _G and ΔD _B ) is 1.5 or less and 0.3 or more, preferably 0.5 or more, and more preferably 0.8 or more. At these density values, the distinguishability between the image forming area position detection display and the image forming area becomes high.

When an optical information recording area for recording information by using the photosensitivity of a photographic film is used as the information recording area, in a preferred embodiment, the optical information recording area is an image forming area position detection display. It is formed in an area outside the photographic film in the width direction of the image forming area defined by. This is because if the optical information recording area is formed between the adjacent image forming areas, the entire length of the photo film is extended, which is disadvantageous in making the camera thinner. Also, if an optical information recording area is formed between the perforations, a very complicated camera mechanism is required to input information to and read information from the same area. Therefore, it is preferable that the optical information recording area is not formed between the image forming areas or between the perforations but is formed outside the image forming area in the film width direction.

In order to secure the area of the optical information recording area, it is preferable to reduce the number of perforations. Normally, perforations are used for film transport, but other film transport mechanisms that do not use perforations can be used to reduce the number of perforations by leaving only the perforations that are used only for positioning in the camera or printer. be able to. The preferred number of perforations is 4 or less per screen, and the particularly preferred number is 2 or less per screen.

In a preferred embodiment, the ratio of the optical information recording area is 15% or more, preferably 25% or more, more preferably 30% or more and 45% or less of the set area of one frame of the image forming area. Is. In this specification, the ratio of the optical information recording area to one frame of the image forming area is defined as follows.

The ratio when the image forming area position detection display extending in the film length direction is not formed is as follows. As shown in FIG. 1, an image forming area 2 (a rectangular portion surrounded by a chain line 2a and an image forming area position detection display line 3a) is formed on a film 1 in the film width direction between the image forming areas 2. When the extended image forming area position detection display line 3a and the optical information recording areas 4a and 4b formed outside the image forming area 2 in the film width direction are arranged, the width of the film 1 is A and the image forming is performed. When the width of the area 2 is B, the ratio R ₁ of the optical information recording areas as a whole including the optical information recording areas 4a and 4b is expressed by the following equation.

R ₁ = (A−B) / A × 100 = (E ₁ + E ₂ ) / A × 100 (%) E ₁ and E ₂ are each of the optical information recording areas 4 a and 4 b in the film width direction. Width. The ratios for forming the image forming area position detection display extending in the film length direction are as follows. As shown in FIG. 2, on the film 1, the image forming area 2 (rectangular portion surrounded by the image forming area position detection display lines 3a and 3b), the image forming area position detection display line 3a extending in the film width direction, and the film length. When the image forming area position detection / display line 3b extending in the vertical direction and the optical information recording areas 4a and 4b respectively formed outside the image forming area 2 in the film width direction are arranged, the width of the film 1 is A, the inner spacing between the image forming area position detecting and displaying lines 3b is C (the length C is equal to the width of the image forming area 2), and the line width of the image forming area position detecting and displaying line 3b is D ₁ , respectively. Assuming D ₂ , the ratio R ₂ of the total optical information recording areas of the optical information recording areas 4a and 4b is expressed by the following equation.

R ₂ = (A-C-D ₁ -D ₂ ) / A × 100 = (E ₁ + E ₂ ) / A × 100 (%) E ₁ and E ₂ are optical information recording areas in the film width direction. The width of each of 4a and 4b. As will be described in detail later, although the maximum widths E ₁ and E ₂ of the optical information recording areas that can be taken in the current roll photographic film are only 2 mm, respectively, by arranging as shown in FIGS. 1 and 2, The widths E ₁ and E ₂ of the optical information recording areas 4a and 4b can be set to 3 mm or more and 8 mm or less, respectively.

Incidentally, in order to prevent the information inputted by the optical means from being erased by so-called "optical fog", the cartridge is of a light-tight type (for example, the one described in Japanese Patent Application No. 1-17253). Is preferred. In this case, it is preferable to record the photographing information from the camera on the side where boss fog is prevented. Information can be input by an optical means at any time, but it is preferable to input the information at the time of film production or photographing.

Although only optical means may be used as the information input means, it is preferable to use at least one means selected from magnetic means, electrical means, printing means or mechanical means together with the optical means. .. Among these, a semiconductor element can be used as the electrical means, and among these semiconductor elements, an EEPROM or the like is preferable. The semiconductor element is preferably attached to the cartridge for use, but the cartridge and the semiconductor element may be separated and separately mounted in the camera. Further, an IC card including a microcomputer and EEPROM can be used as the electric storage means.

As the magnetic means, the transparent magnetic bases shown in US Pat. Nos. 4,302,523, 3,782,947 and 4,279,945 are preferable. The advantage of this transparent magnetic base is that information about the image forming area can be input at a position adjacent to the image forming area of the film, and the optical information recording area can be used as the magnetic information recording area. Is. The magnetic information recording layer can be formed only outside the image forming area. In this case, the magnetic information recording layer may be opaque.

When the cartridge is provided with magnetic information recording means, information relating to the usage status of the DX code or film can be input to and output from this magnetic means. The information about the film usage status entered in the cartridge is preferable because it can be confirmed without removing the film from the cartridge. As means for providing the magnetic recording means in the cartridge, a method of attaching a magnetic tape to the cartridge, a method of forming the cartridge with a polymer in which a magnetic substance is mixed and dispersed to give a magnetic recording function to the cartridge, an ink in which the magnetic substance is dispersed There is a method of printing the cartridge with.

Inkjet can be used as the printing means, and marking with a punch can be used as the mechanical means. The preferable area of the image forming area 2 is 350 mm ² or more and 1200 mm ² or less. The film width A is preferably 20 mm or more and 40 mm or less. The image forming area position detection display line 3a is formed in the entire area between each frame of the image forming area 2. The image forming area position detection display lines 3a and 3b are visualized as shown after development.

[0026]

【Example】

Example 1 FIGS. 3 to 6 show an example of a roll photographic film according to the present invention. As the photographic film 1, a cellulose triacetate base having a thickness of 122 μ is used. A photosensitive layer for a color negative film having a sensitivity of 400 is formed on the base at a coating silver amount of about 7 g / m ² (see JP-A-63-236035).

FIG. 3 shows the photographic film 1 stored in the cartridge 5. The cartridge 5 includes a cartridge body 6 and a spool 7. One end 7a of the spool 7 is rotatably supported inside the cartridge body 6 about an axis, and the other end 7b is supported so that the spool 7 can be rotated from the outside of the cartridge body 6. The photographic film 1 is wound around a spool 7 in a roll shape and accommodated in a cartridge body 6, and is sequentially drawn out from a film drawing port 8 provided in the cartridge body 6. However, the cartridge for storing the roll photographic film according to the present invention is not limited to this type, and any type of cartridge can be used.

The photographic film 1 according to the present invention has an image forming area 2 formed continuously in the lengthwise direction of the film, and a photosensitivity of the photographic film 1 formed outside the image forming area 2 in the widthwise direction of the film. The optical information recording areas 4a and 4b utilizing the, the image forming area position detection display line 3a extending in the film width direction between the image forming areas, and the image forming area 2 are provided with a perforation 9 for positioning one film per frame. Have.

As shown in FIG. 4, in the present embodiment, for one frame of the image forming area 2, the screen 12 determined by the exposure aperture of the camera is shown by a rectangular portion surrounded by a broken line. The image is formed in a common area between the image forming area 2 and the screen 12. The length X ₁ of the space between the image forming area position detection display lines 3a is formed to be shorter than the length Y ₁ of the screen 12 in the film length direction.

The image forming area position detection display line 3a formed between the image forming areas 2 is visualized as shown in the figure after development. Image forming areas of the status M red filter, green filter, and blue filter The density difference between the position detection display and the fog portion is 0.8. The width of the image forming area position detection display line 3a is formed to be 1 mm. Further, the difference (Y ₁ −X ₁ ) between the length Y ₁ of the screen 12 and the interval X ₁ between the image forming area position detection display lines 3a is set to 1 mm.

For comparison with the currently used roll photographic film, the film width and screen width were set similarly to the current roll photographic film. That is, the film width is set to 35 mm, and the width Y ₂ of the screen 12 in the film width direction is set to 24 mm. Therefore, the widths E ₁ and E ₂ of the optical information recording areas 4a and 4b are each 5.5 mm, and the ratio R ₁ of the optical information recording areas is about 31% from the following equation.

R ₁ = (35-24) /35×100=31.4 (%) In the current roll photographic film, perforations are formed at both ends of the film in the width direction of the film. A width of 3.5 mm is required for this. For this reason, the areas that can be used as optical information recording areas are only 2 mm outside the perforations at both ends of the film (current roll photographic film has DX code and other information recorded in these 2 mm areas). ). That is, the ratio R of the optical information recording area of the roll photographic film currently used is as follows.

R = (35-24-7) /35×100=11.4 (%) <R ₁ As described above, the area of the optical information recording area is larger than that of the roll photographic film currently used. As a result, it is possible to form two rows of bar codes or character information rows in the film length direction in the optical information recording areas 4a and 4b. For example, as shown in FIG. 3 or 4, two rows of bar codes 10a can be formed in the film length direction in the optical information recording area 4a on the side where the perforations 9 are absent. One bar code 10b and one character information string 11 can be formed in the target information recording area 4b. These bar codes 10a and 10b and the character information string 11 are visualized as shown after development.

As described above, since it becomes possible to record two rows of information in each of the optical information recording areas on both sides of the photographic film 1 in the film width direction, the photographic film 1 can be recorded as described above. It is possible to record various shooting information, film information, lab information, etc. The various information recorded in the optical information recording areas 4a and 4b does not include image information.

In this embodiment, the optical information recording area 4b is used as a recording space for photographing information from the camera. Further, the optical information recording area 4a was used as a recording space for information input by the manufacturer such as film type, frame number, film manufacturing lot number. A red LED was used to record shooting information from the camera. (Example 2) As shown in FIG. 5, a photographic film 1 was produced by adding a narrow width image forming area position detection display line 3b to the photographic film shown in Example 1. The image formation area position detection display line 3b extends in the film length direction along the image formation area 2.

In the photographic film 1 of this embodiment, the interval X ₁ between the image forming area position detection display lines 3a is shorter than the length Y _{1 of the} screen 12 in the film length direction (X ₁ <Y ₁ ). in particular, in addition, the spacing X ₂ between the image formation area position detecting display line 3b is formed to be longer than the film width direction length Y ₂ of the screen 12 in the film width direction (X _2> Y ₂ ).

The line widths D ₁ and D ₂ of the image forming area position detection display line 3b are set to 0.2 mm, respectively. Film width direction of the difference in length Y ₂ interval X ₂ and the screen 12 between the image forming area position detection display line 3 b in the film width direction (X ₂ -Y ₂₎ is 0. It is set to 4 mm. Therefore, the widths E ₁ and E ₂ of the optical information recording areas 4a and 4b are each 5.1 mm, and the ratio R ₂ of the optical information recording areas is about 29% from the following equation.

R ₂ = (35-24-0.4-0.4) /35=29.1 (%)> R As described above, even in the present embodiment, the optical ratio is higher than that of the current roll photographic film. The area of the target information recording area can be increased, and two rows of barcodes 10a and 10b or character information rows 11 can be formed in the optical information recording areas 4a and 4b in the film length direction. As a result, similar to the first embodiment, various information can be recorded in the optical information recording area.

[0039]

[Effect of the device]

 As in the present invention, the roll photographic film is formed such that the length defined by the image formation area position detection display in the film length direction is shorter than the length of the image formation area determined by the exposure aperture of the camera. As a result, the area of the information recording area of the photographic film can be enlarged, and various information can be input.

[Brief description of drawings]

FIG. 1 is a plan view of a photographic film showing a positional relationship between an image forming area position detection display and an image forming area.

FIG. 2 is a plan view of a photographic film in another embodiment showing the positional relationship between the image forming area position detection display and the image forming area.

FIG. 3 is a plan view including a partial sectional view showing an embodiment of a roll photographic film according to the present invention.

FIG. 4 is a plan view showing a positional relationship between an image forming area position detection display line on the roll photographic film shown in FIG. 3 and an image forming area determined by an exposure aperture of a camera.

FIG. 5 is a plan view including a partial sectional view showing a second embodiment of the roll photographic film according to the present invention.

6 is a plan view showing a positional relationship between an image forming area position detection display line on the roll photographic film shown in FIG. 5 and an image forming area determined by an exposure aperture of a camera.

[Explanation of symbols]

 1 Photographic Film 2 Image Forming Area 3a Image Forming Area Position Detection Display Line 3b Image Forming Area Position Detection Display Line 4a Optical Information Recording Area 4b Optical Information Recording Area 5 Cartridge 6 Cartridge Body 7 Spool 7a Spool End 7b Spool End 8 Film outlet 9 Perforation 10a Bar code 10b Bar code 11 Character information string 12 Screen

Claims (2)

[Scope of utility model registration request] 1. An image forming area position detection display visualized by development is formed so as to extend at least in the film width direction along the outer edge of each image forming area, and both ends of the film outside the image forming area in the film width direction. In a roll photographic film in which an information recording area is formed in a portion, in the film length direction, the length between the image forming area position detection displays is formed shorter than the length of the image forming area. Roll photographic film. 2. The image forming area position detection display is formed so as to extend in the film length direction along the outer edge of each image forming area, and the image forming area position detection display is formed in the film width direction. The roll photographic film according to claim 1, wherein the length of the roll photographic film is longer than the width of the image forming area.