JPH0550459U - Photographic film and camera - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to know whether or not the photographic film is within the shooting expiration date, and to enable good shooting. [Structure] The manufacturing date information of the photographic film 1 is recorded on the magnetic recording layer 4 formed on the photographic film 1, and it is possible to refer to the information at the time of shooting to determine whether or not it is within the shooting expiration date. ..

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a photographic film having an exposure and photographing surface and an information recording section, and a camera using the photographic film.

[0002]

[Prior Art]

 The information regarding the expiration date and date of manufacture of conventional silver halide film is recorded only in the film packaging box.

[0003]

[Problems to be solved by the device]

 For this reason, with the conventional silver halide film described above, when the user broke the packaging box and kept it as a patrone container, the shooting expiration date could not be confirmed and the expiration date was forgotten. In some cases, the camera may be used with the silver salt film loaded in it for a long time without being aware that the expiration date has expired. There is a problem that shooting may not be possible.

An object of the present invention is to provide a photographic film and a camera capable of knowing whether or not the photographic film is within the shooting expiration date and enabling good shooting.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the photographic film of the present invention is characterized in that, in the photographic film having an exposed and photographed surface and an information recording portion, information on the date of manufacture of the photographic film is recorded in the information recording portion. And

Further, it is characterized in that photographing expiration date information of the photographic film is recorded in the information recording section.

Further, the camera of the present invention receives the reading information for reading the recorded information on the photographic film from the information recording section of the photographic film and the read data from the reading means, and the photographing expiration date of the photographic film has passed. If it is determined that the alarm is present, a control means for giving an alarm notification is provided.

Further, it is characterized by comprising control means for setting the photographing prohibition mode when it is judged that the photographing expiration date of the photographic film has passed after receiving the reading data from the reading means.

Further, when the photographing expiration date of the photographic film loaded in the camera body has expired, the control means sets the alarm notification or the photographing prohibition mode when the main switch is turned on. And

[0010]

[Action]

 According to the photographic film having the above-described structure, since the information about the manufacturing date and the shooting expiration date is recorded on the photographic film itself, the shooting expiration date can be known from the photographic film by an appropriate method.

Further, according to the camera having the above-described configuration, the reading unit reads the information regarding the shooting expiration date from the photographic film, and when the control unit receives the read data and the shooting expiration date has passed, an alarm notification is given. Or set the shooting prohibition mode.

For the photographic film already loaded in the camera, when the main switch of the camera is turned on, the reading unit and the control unit determine whether or not the information indicating whether the shooting expiration date has passed is read, and the shooting expiration date is determined. If is over, alarm notification and shooting prohibition mode are set.

[0013]

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of an embodiment of the photographic film of the present invention, and FIG. 2 is a sectional view of the same embodiment. The photographic film 1 is a transparent film base 2 and one side surface of the film base 2. The photosensitive layer 3 which is an exposure and photographing surface formed for each photographing frame, the transparent magnetic recording layer 4 which is an information recording layer formed on the other side surface of the film base 2, and the electrostatic recording layer 4 surface. The magnetic recording layer 4 is formed in a plurality of line segments 4a to 4c for each of the photosensitive layers 3 and a protective layer 5 formed in order to prevent slippage and slip. In the figure, 6 is a performance formed on each photosensitive layer 3.

FIG. 3 is an explanatory view showing the constitution of an embodiment of the camera of the present invention, and FIG. 4 is a sectional view of the same embodiment. The camera body 10 is equipped with a cartridge 11 containing the photographic film 1. A cartridge chamber 12 to be filled, a spool chamber 14 in which a spool 13 for film winding is provided, and an aperture 16 formed to face the taking lens 15. A perforation detector 17 is provided near the aperture 16, and a film pressure plate 18 on the film transport path is provided with a magnetic head 19 for writing and reading information on the magnetic recording layer 4 of the photographic film 1. Has been. In the figure, 20 is a magnetic recording / reproducing circuit provided in the magnetic head 19, 21 is a drive unit for rotationally driving the spool 11a of the cartridge 11 and the spool 13 for film winding, and 22 is the perforation detection. It is a CPU (central processing unit) that exchanges signals with the unit 17, the magnetic recording / reproducing circuit 20, and the drive unit 21 and controls each unit.

In the above-described photographic film 1 of this embodiment, information data of the date of manufacture of the photographic film or the expiration date of photographing is recorded on the magnetic recording layer 4 (for example, the upper or lower portions 4a, 4c) at the time of manufacturing. It is recorded.

When the cartridge 11 containing the photographic film 1 is loaded in the cartridge chamber 12 of the camera shown in FIGS. 3 and 4, a loading signal is output to the CPU 22. The CPU 22 outputs a control signal to the drive unit 21 to rotationally drive the spools 11a and 13 and feed the photographic film 1 to make it ready for photographing.

FIG. 5 is a flowchart for determining the shooting expiration date. When feeding is started as described above (S1-1), the start of perforation 6 of the first frame (shooting frame) is the perforation detection unit. Detected in 17 (S1-2), the magnetic recording / reproducing circuit 20 is turned on (S1-3). The data recorded on the magnetic recording layer 4 of the corresponding frame is read by the magnetic head 19 (S1-4) and stored in the memory of the CPU 22 (S1-5). When the end of the perforation 6 is detected (S1-6), the feeding of the photographic film 1 is ended (S1-7).

Then, based on the information data of the manufacturing date or the shooting expiration date in the memory of the CPU 22, the CPU 22 refers to the calendar data stored whether or not the photographic film 1 is within the shooting expiration date. It is determined (S1-8), and if it is within the shooting expiration date (YES in S1-8), the shooting is enabled (S1-9). If it is determined that the shooting expiration date has passed (NO in S1-8), an alarm is issued on the display or buzzer, or a shooting prohibition mode is set and release lock is performed (S1-10).

FIG. 6 is a flowchart for determining the shooting expiration date when the photographic film is already loaded in the camera. When the main switch of the camera is turned on (S2-1), the CPU 22 stores the above-mentioned contents in the memory. Based on the information data stored as in steps (S1-1) to (S1-5), it is determined whether the photographic film 1 is within the shooting expiration date (S2-2), and the shooting expiration date is determined. If it is within the range (YES in S2-2), the camera is ready to shoot (S2-3), and if the shooting expiration date has passed (NO in S2-2), an alarm is issued or a shooting prohibition mode is set. Is set (S2-4).

By using the above photographic film and camera, the shooting expiration date of the photographic film is determined at the time of shooting, and when the shooting expiration date has passed, an alarm is given to warn the user, Alternatively, setting the camera to the shooting prohibited state can prevent shooting failures.

It is also considered that a magnetic recording / reproducing apparatus capable of reading information data from the magnetic recording layer 4 of the photographic film 1 is used to display on the CRT (cathode ray tube), not the camera, concerning the effective shooting period of the photographic film. Be done.

[0023]

[Effect of the device]

 As described above, according to the photographic film of the present invention, it is possible to know the expiration date of photography of the photographic film from the information recorded on the photographic film, and according to the camera of the present invention, it is recorded on the photographic film. If the shooting expiration date has expired, an alarm can be notified and the shooting prohibited state can be read, and it is possible to know whether or not the shooting expiration date has expired, and good shooting It is possible to provide a photographic film and a camera capable of performing the above.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the photographic film of the present invention.

2 is a cross-sectional view of the photographic film of FIG.

FIG. 3 is an explanatory diagram showing a configuration of an embodiment of a camera of the present invention.

4 is a cross-sectional view of the camera of FIG.

FIG. 5 is a flowchart for determining a shooting expiration date.

FIG. 6 is a flowchart for determining a shooting expiration date when a photographic film is already loaded in the camera.

[Explanation of symbols]

1 ... Photographic film, 3 ... Photosensitive layer (exposure shooting surface), 4 ...
Magnetic recording layer (information recording portion), 19 ... Magnetic head (reading means), 22 ... CPU (control means).

Claims (5)

[Scope of utility model registration request] 1. A photographic film having an exposed and photographed surface and an information recording portion, wherein the information recording portion has information on the date of manufacture of the photographic film recorded therein. 2. A photographic film having an exposed and photographed surface and an information recording portion, wherein photographic film expiration date information of the photographic film is recorded in the information recording portion. 3. A reading means for reading the recorded information relating to the photographic film from the information recording portion of the photographic film according to claim 1 or 2, and a reading expiration date of the photographic film upon receiving the read data from the reading means. A camera, comprising: a control means for giving an alarm notification when it is determined that the camera has passed. 4. A reading means for reading recorded information relating to the photographic film from the information recording portion of the photographic film according to claim 1, and a reading expiration date of the reading data from the reading means, and a photographing expiration date of the photographic film. And a control means for setting a photography prohibition mode when it is determined that the camera has passed. 5. When the photographing expiration date of the photographic film loaded in the camera body has expired, the control means sets an alarm or photographing prohibition mode when the main switch is turned on. The camera according to claim 3 or claim 4.