JPH0545714A - Photographic film - Google Patents

Abstract

PURPOSE:To record all information by previously assuring the min. required limit of an out-of-screen region. CONSTITUTION:The ratio of an in-the-screen region to the out-of-screen region is maximized if the longitudinal size of an image frame K is set at 40mm which is the max. angle of view existing at present and if the image frame is photographed at 1.28 aspect ratio which is the min. value existing at present. All the information relating to the image can be recorded if the ratio of the out-of-screen region to the entire region for one frame of the image frame K is assured as the min. value of the information recording region of the respective image frames. The ratio of the out-of-screen region is evidently smaller even at the same aspect ratio as the angle of view is larger. The information recording region can be assured at the other angles of view and aspect ratios without decreasing below these angles and ratios if the ratio (23.2%) of the out-of-screen region to attain the min. aspect ratio of 1.28 at the time of 40mm considered to be the max. angle of view at present.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to photographic film for recording and utilizing information about images.

[0002]

2. Description of the Related Art A strip-shaped transparent magnetic material (hereinafter referred to as a magnetic track) is applied to a photographic film, particularly a negative film, and information for specifying the negative film and information for specifying an image printed on the negative film are magnetically recorded. It is suggested to record. According to this, information can be stored on the magnetic track corresponding to each image frame.

Among the information to be recorded, the information to be recorded for each image frame includes a frame number, sensitivity, shooting date and time,
Specifying pseudo zoom / panorama, backlight / under or overexposure shooting, flash shooting, color temperature, color temperature, shutter speed, aperture, subject distance, camera posture at the time of shooting, shooting location, subject name, and other shooting memos Etc. are possible.

By obtaining such information for each frame, in the case of obtaining a color print from a film photographed on a negative film, designation of pseudo zoom / panorama, backlight / under or overexposure photographing, stroboscopic photographing, Since information such as color temperature can be used, printing can be performed in a state closer to what was intended at the time of shooting.

Further, in the laboratory, it is possible to record the exposure amount etc. at the time of printing for each image frame at the time of printing on photographic paper. Therefore, at the time of reordering, if the recorded exposure amount and the like are read, the printing process can be performed under the same conditions.

The recording of such information can be performed in the area within the screen, but since the recording head slides while contacting the surface of the area within the screen, it may cause scratches and the like. The information is preferably recorded in the off-screen area.

[0007]

However, in the area outside the screen, the area inside the screen changes depending on the angle of view of the camera used (the longitudinal dimension of the image frame after shooting) and the aspect ratio of the image frame taken. Therefore, the area outside the screen changes accordingly.

For this reason, it is necessary to secure a recording area (area outside the screen) for recording all information in advance, but such a recording area is not taken into consideration in the conventional negative film, and it is used. There is a problem that it is not possible to record all the information depending on the aspect ratio of the camera used or the frame of the image taken.

In consideration of the above facts, an object of the present invention is to obtain a photographic film capable of recording all information by preliminarily securing a necessary minimum area outside the screen.

[0010]

According to a first aspect of the present invention, there is provided a photographic film in which an area outside the screen is applied as an information recording area for recording information regarding the image frame, and one image frame is included. Off-screen area Y within the range
The ratio Y / (X + Y) of the out-of-screen area Y to the entire area X + Y for one image frame is obtained when the ratio X / Y of the in-screen area X to It is characterized by the minimum value.

According to a second aspect of the present invention, the area outside the screen is applied as an information recording area for recording information about the image frame, and within the range of one image frame, at least from the edge around the image frame. It is a photographic film that requires 2mm and 5.5mm on one side of the image frame, and the length of the image frame is 40mm, and the aspect ratio is 40mm.
The feature is that the area outside the screen within the range of one image frame obtained at 1.28 is the minimum value of the information recording area of each image frame.

The invention described in claim 3 is characterized in that, in the invention described in claim 2, the ratio of the area outside the screen to the entire area of one frame is 23.2% or more.

[0013]

According to the invention described in claim 1, as shown in FIG. 1, the width dimension of the photographic film F is H, and the range of one frame of the image frame K photographed on the photographic film F (FIG. 1). Assuming that the dimension of the image frame K is W, the entire area (area) of one frame of the image frame K is W × H.

Further, the area of the image frame K, that is, within the screen
The area X is represented by x × y. y is taken by the camera
The angle of view of the image frame to be displayed. Note that y is the aspect ratio
If it is A, it can be replaced with Ax. others
Therefore, the area of screen area X is Ax ²Becomes

The area Y outside the screen is the image frame K.
It is represented by a value H · W−Ax ² obtained by subtracting the area Ax ² of the in-screen area from the area W × H of the entire area for
Off-screen area Y for all area X + Y for one image frame
Ratio Y / (X + Y) is a ^{1- (Ax 2 / H · W} ) ··· (1).

By the way, when the ratio X / Y of the in-screen area X to the out-of-screen area Y is maximum, the outside-screen area Y is minimum. Therefore, the aspect ratio A that maximizes the above-mentioned ratio X / Y is selected. The above equation (1) is calculated. In addition, dimension H
Is predetermined by the photographic film, and the dimension W is a value set when y is maximized.

By preliminarily securing the value (ratio) obtained by this as the minimum value of the out-of-screen area Y, when this out-of-screen area Y is applied as an information recording area, an area for recording all information relating to image frames is set. Obtainable.

According to the second aspect of the present invention, as shown in FIG. 1, around the image frame K, α, β and γ regions are provided as a margin for pressing the mask plate during the printing process. It is necessary and α and γ are set to 2 mm. on the other hand,
For example, β requires 5.5 mm as a magnetic track forming area for recording information by magnetic recording.

That is, meandering during the transportation of photographic film,
In order to achieve a generally required error rate of 10 ⁻¹⁰ to 10 ⁻¹² in consideration of the contact state of the recording head, the maximum recording density for magnetic recording is limited to 500 bpi.

In consideration of this, when the magnetic track T is formed, the track width b is 1.4 mm and the track interval a is 0.9 mm.
Therefore, a total of 5.5 mm (3a + 2b) is required.

In such a photographic film, the longitudinal dimension of the image frame K is 40, which is the maximum angle of view currently existing.
mm, and the aspect ratio is 1.28, which is the minimum value that currently exists.
When an image frame is photographed with, the ratio of the in-screen area to the out-screen area becomes maximum. If the ratio of the area outside the screen to the entire area of one frame of the image frame K at this time is secured as the minimum value of the information recording area of each image frame, all information about the image can be recorded.

In the photographic film F shown in FIG. 1, the perforation P of the area Z (Zx × Zy) is formed in the area Y outside the screen.
Is applied as a positioning reference when the photographic film F is conveyed. However, if the positional information is recorded in the above magnetic information, the perforation P
It is not necessary (Z = 0), and according to this, the area outside the screen = the information recording area.

According to the invention described in claim 3, in the invention described in claim 2, the ratio of the image frame K of the area outside the screen to the entire area of one frame is determined to be 23.2% as the lower limit value.

FIG. 2 shows a characteristic diagram of the aspect ratio and the ratio of the area outside the screen depending on the change of the angle of view. The width of the photographic film F is fixed at 38.75 mm.

As shown in FIG. 2, it can be seen that the larger the angle of view, the smaller the ratio of the area outside the screen even with the same aspect ratio. Here, the ratio (23.2%) of the off-screen area when the minimum aspect ratio is 1.28 when the maximum angle of view is 40 mm is set to the lower limit (MIN in FIG. 2).
(See line) in advance, it is possible to secure the information recording area without lowering the angle of view and aspect ratio. In this case, the results are calculated assuming that there is no perforation P shown in FIG.

[0026]

EXAMPLE FIG. 3 and FIG. 4 show a negative film 10 according to this example. The widthwise dimension of this negative film 10 (dimension H in FIG. 3) is 38.75 mm.

The negative film 10 is the transparent base 1 shown in FIG.
An emulsion layer 14 is provided on the upper surface of No. 2 so that an image can be exposed and recorded. A magnetic recording layer 16 coated with a transparent magnetic material is provided on the lower surface of the transparent base 12 in FIG. As shown in FIG. 3, this magnetic recording layer 16
Are formed outside the image frame 10A of the negative film 10 along the longitudinal direction of the negative film 10, and the tracks S1 and S2 of the tip portion of the negative film 10 where the image frame 10A is not recorded are recorded. And each image frame 10
It is constituted by tracks T1 and T2 provided corresponding to A. A plurality of perforations 13 for hooking and pulling out the negative film 10 on the claws of a sprocket (not shown) are provided at the tip of the negative film 10.

Tracks S1 and S2 are areas for recording necessary information for each of the negative films 10, and the track T
Areas 1 and T2 are areas for recording necessary information for each image frame 10A.

Here, as shown in FIG. 6, in the negative film 10 of this embodiment, image frames 10A and tracks T are provided.
The relationship between the areas 1 and T2 is predetermined.

The image frame 10A is limited to the area surrounded by the imaginary line in FIG. The range surrounded by the imaginary line represents the area at the maximum value of the angle of view of the image frame (lengthwise dimension of the image frame 10A) taken by the current camera and at the minimum aspect ratio.

Further, each track S1, S2, T1, T2
Recording density is generally required error rate 1
In order to achieve 0 ^-10 to 10 ^-12 , the limit is 500 bpi. In the track structure in this case, the width dimension b of each track T1 and T2 is 1.4 mm, and the track spacing dimension a is 0.9 mm. Therefore, the dimension β from the image frame edge on the side where the track is provided to the end of the negative film 10 is 5.5 mm (3a + 2b).

On the other hand, in the periphery of the image frame 10A, a margin for holding the negative carrier 220 by the mask plate is necessary in the photoprinting apparatus 202, which will be described later, so the image frame interval γ and the side where the track is provided. The dimension α from the image frame edge on the opposite side to the edge of the negative film 10 is 2 mm.

The track S2 of the negative film 10 is in a non-photographed state, that is, at the manufacturing stage, as shown in Table 1, lot No. Has been entered in advance. Also, track T1
As shown in Table 1, ISO sensitivity, negative / positive, number of sheets, manufacturer and frame No. Has been entered in advance.

[0034]

[Table 1]

FIG. 5 shows a camera 200 and a photo printing apparatus 202 according to this embodiment. On the camera 200, the negative film 10 is spooled 204 on one side.
A cartridge 206 to be wound up and accommodated therein is loaded. The camera 200 is provided with a drive reel 205 driven by a motor 203 connected to a control unit 201 (see FIG. 5). When the leading end of the negative film 10 is hooked on the drive reel 205, the negative film 10 is frame-fed.

The camera 200 has a magnetic recording layer 16 of the negative film 10, that is, a control unit 20 corresponding to each track.
1, a recording head 208 connected to the recording head 1 is provided so that predetermined information based on the image exposed and recorded on the track is automatically recorded when the negative film 10 is conveyed by the driving means. (See Table 2).

[0037]

[Table 2]

The negative film 10 for which photographing has been completed is rewound into the cartridge 206 again, taken out from the camera 200, and brought into the DPE agency shop. This DP
At the E agency shop, the leader of the negative film 10 (the portion where the tracks S1 and S2 are provided) is pulled out from the cartridge 206 in the dark box, and after inputting the information as shown in Table 3 based on the user's order, It is designed to be transported to. In the laboratory, after developing the negative film 10, the negative film 10 is placed at a predetermined position of the photo printing device 202.

[0039]

[Table 3]

In the photo printing apparatus 202, a negative carrier 220 is arranged on the optical axis of a light source 218 which is irradiated during printing. The negative carrier 220 is provided with a driving roller (not shown) that is rotated by the driving force of the driving unit 224 connected to the control device 222.
Is conveyed in the direction of arrow A in FIG. Further, the negative carrier 220 is provided with a solenoid 226, and the negative film 10 can be clamped and pressed at the printing position by a signal from the control device 222.

CMY filters 228 are interposed between the light source 218 and the negative carrier 220, and are projected and retracted on the optical axis according to the exposure amount of each color.

The light rays that have passed through the negative film 10 are irradiated onto the photographic printing paper 232 through the lens 230, and the photographic printing paper 232 is radiated.
The image is designed to be printed. A shutter 234 is interposed between the photographic printing paper 232 and the lens 230, and is retracted from the optical axis at the time of exposure by a signal from the control device 222.

On the conveying path of the negative film 10,
The reading head 23 is provided upstream of the negative carrier 220.
6 is provided to read the information recorded by the recording head 208 of the camera 200. The control device 222 is provided with a memory for recording the information read by the reading head 236.

Further, a recording head 238 is arranged on the downstream side of the negative carrier 220, and information when the negative film 10 is printed by the printing device 202 (Table 4).
(Information shown in) is recorded.

[0045]

[Table 4]

At the DPE agency, the information shown in Table 5 is also input to the developed negative film 10 finished in the laboratory. In this case, the developed negative film 10 can be operated in a bright room.

[0047]

[Table 5]

Although the information of Tables 1 to 5 can be recorded on the negative film 10 of this embodiment, it may be necessary to record more information than this. Therefore, in this embodiment, the ratio of the area other than the image frame 10A, that is, the area outside the screen is determined in advance. This ratio is the ratio of the off-screen area to the entire area for one image frame when the image frame 10A is the largest in the current camera (the entire range surrounded by the imaginary line in FIG. 6).

Since the aspect ratio in the case of the largest image frame 10A is 1.28, the point having the aspect ratio of 1.28 and the angle of view of 40 mm in FIG. 2 is set as the minimum necessary ratio of the off-screen area (23.2). %).

The operation of this embodiment will be described below. The negative film 10 is loaded into the camera 200,
When the perforation 13 at the tip of the film is hooked on the drive reel 205 and the motor 203 is driven, the negative film 10
Are withdrawn from the cartridge 206. At this time, the information can be surely recorded in the predetermined area.

When an image is taken by the camera 200, the information from item 6 to item 17 in Table 2 is recorded on the track T1 corresponding to the image frame 10A taken from the recording head 24 according to the movement of the negative film 10. To be recorded.

The negative film 10 rewound on the spool 204 of the cartridge 206 after the photographing by the camera 10 is completed is carried by the user to the DPE agency. At the DPE agency, the negative film 10 is pulled out from the cartridge 206 in a dark room, and the information shown in Table 3 is recorded on the track S1.

The negative film 10 received at the DPE agent shop is conveyed to a laboratory for development processing, and then, in the case of simultaneous printing, it is loaded into a predetermined position of the photo printing apparatus 202. The negative film 10 is pulled out from the loaded cartridge 206, and the drive unit 2 of the negative carrier 220 is pulled out.
When it is transported by 24, the reading head 2
The information recorded on the magnetic recording layer 16 is read by the recording head 208 of the camera 200 and the recording device of the DPE agent shop by 36.

In the lab, based on the information read,
A printing condition such as an exposure amount is set, each image frame 10A is sequentially positioned at a printing position, and a printing process is performed. Here, the track S2 provided at the tip portion of the negative film 10 is provided with a negative carrier 2 while the negative film 10 is being conveyed.
Information other than the item 28 in Table 4 is recorded by the recording head 238 installed on the downstream side of 20.

On the track T2 of each image frame 10A, information of item 28 (density correction value, color correction value at the time of printing, etc.) in Table 4 is recorded.

Here, in the step of verifying the printing finish state of the printing paper 232, when it is judged as NG,
It will be reprinted, but the negative film 10 at this time
The frame number and the correction value of the above re-printed image frame 10A are set to the lab input areas 66, 1 of the track S2 or the track T2.
By recording in 02, the printing apparatus 202 can perform the optimum reprinting process only by reading the reprinting information.

The developed negative film 10 and the photographic printing paper 232 which has been developed after printing are returned to the DPE agency. The DPE agency stores the information shown in Table 5 on the truck S1 and returns it to the user. Also in this case,
It is preferable to record similar information on the magnetic recording layer 233 of the printing paper 232.

The user selects the track T of each image frame 10A.
The information of items 17, 18 and g to n in Table 2 can be arbitrarily recorded in Table 2.

In this embodiment, all the information shown in Tables 1 to 5 can be recorded on the tracks S1, S2, T1 and T2, respectively. However, when the amount of information is further increased, It is preferable to understand how much information can be increased.

Therefore, in this embodiment, the ratio of the area outside the screen applicable as the information recording area is secured to 23.2% in advance. Therefore, the remaining information recording capacity can be calculated by taking the maximum recording density and the currently recorded information amount into consideration.

Therefore, information contents can be created, changed, adjusted, etc. in advance, and the trouble of changing the specifications of the negative film each time is eliminated.

[0062]

As described above, the photographic film according to the present invention has an excellent effect that all the information can be recorded by preliminarily securing a necessary minimum area outside the screen.

[Brief description of drawings]

FIG. 1 is a plan view showing a dimensional relationship between an in-screen area and an out-screen area of a photographic film according to the present invention.

FIG. 2 is a characteristic diagram of aspect ratio-outside screen area ratio.

FIG. 3 is a plan view of a negative film according to this example.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a system diagram for recording / reproducing information according to the present embodiment.

FIG. 6 is a plan view showing a region distribution of a negative film.

[Explanation of symbols]

 10 Negative film (photographic film) 10A Image frame X In-screen area Y Out-screen area

Claims (3)

[Claims] 1. A photographic film applied as an information recording area for recording information relating to the image frame, wherein the area outside the screen is an area inside the screen with respect to the area Y outside the screen within the range of one image frame. The entire area X + Y for one image frame obtained when the ratio X / Y of X becomes maximum
A photographic film characterized in that a ratio Y / (X + Y) of an area Y outside the screen to the area Y is set to the minimum value of the information recording area of each image frame. 2. An area outside the screen is applied as an information recording area for recording information relating to the image frame, and within the range of one image frame, at least 2 mm from the edge around the image frame and one of the image frame top and bottom directions. Dimension of 5.5m
m The required photographic film, the area outside the screen within the range of one image frame, which is obtained when the longitudinal dimension of the image frame is 40 mm and the aspect ratio is 1.28, is the information recording area of each image frame. A photographic film characterized by having a minimum value. 3. The photographic film according to claim 2, wherein the ratio of the area outside the screen to the entire area of one frame is 23.2% or more.