JP2003043637A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film unit with a lens capable of magnetically recording additional data without making the film unit large in size. SOLUTION: A photographic film 23 with magnetic data 53 recorded by every frame is previously loaded to the film unit equipped with a lens 2 at manufacturing. The film unit equipped with the lens 2 is provided with an electromagnet 41 for erasing the magnetic data 53, and a switching knob 9 for erasing magnetic data 53 or not. When power is supplied to the electromagnetic 41, the magnetic data 53 is erased by the electromagnet 41. In accordance with the displacement of the switching knob 9, it is decided whether or not power is supplied to the electromagnet 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted photo film unit, and more particularly to a lens-fitted photo film unit for recording print information and magnetic data representing photographing information on a photographic film.

[0002]

2. Description of the Related Art A lens-fitted photo film unit in which an unexposed photo film is built in advance in a unit body having a simple photo-taking mechanism is commercially available so that a photograph can be easily taken at any time. This lens-fitted photo film unit is generally widely used because it allows the user to take a picture immediately on the spot of purchase and simply send it to a developing store after the picture is taken.

On the other hand, in a recent lens-fitted film unit, it is general to record print information such as a print aspect ratio and various shooting information such as a shooting date and time on a photographic film. Some photographic films loaded in the lens-fitted film unit, such as the APS film, optically and magnetically record additional data representing shooting information outside the exposure range for each frame of the photographic film at the time of shooting. .

As a method of optically recording the additional data representing the photographing information, a light-shielding plate that defines a light-shielding range by switching the operation member is provided, and external light is taken in at the same time as the shutter release, and the exposure range of the photographic film is taken. There is something to expose outside. Further, as a method of magnetically recording the additional data representing the photographing information, a magnetic head for deciding whether or not to perform the magnetic recording is built in by switching the operation member, and the magnetic head is driven at the same time as the shutter release. There is.

[0005]

However, in the case of the method of optically recording additional data on the above-described lens-fitted film unit, the size does not increase, but the additional data is magnetically recorded. In the case of the method, there is a drawback that the size of the lens-fitted film unit is increased by incorporating the magnetic head.

It is an object of the present invention to provide a lens-fitted photo film unit capable of magnetically recording additional data representing photographing information without increasing the size.

[0007]

In order to achieve the above object, the lens-fitted film unit of the present invention is loaded with a photographic film in which magnetic data is recorded for each frame at the time of manufacturing, and a magnetic film for erasing the magnetic data is loaded. It is characterized by comprising a data erasing means and an operating member for switching whether or not to erase the magnetic data.

Further, in the lens-fitted film unit according to the second aspect, the magnetic data erasing means is provided with an electromagnet for erasing magnetic data by energizing, and the operating member is in a state in which energization to the electromagnet is stopped. It is characterized in that it is set to either a first position for keeping it or a second position for keeping energization of the electromagnet in a driven state. The magnetic data erasing means is a magnet that is set at either a data storage position for keeping the magnetic data recorded or a data erasing position for erasing the magnetic data, and the operating member is
It is characterized by being set to either a first position for displacing the magnet to the data storage position or a second position for displacing the magnet to the data erasing position.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a film unit with a lens (hereinafter referred to as a film unit) 2
Is composed of a unit body 3 and an exterior label 4. The unit body 3 has a photographing lens 5 on the front surface thereof.
Viewfinder objective window 6, strobe light emitting section 7, strobe operation button 8, color / monochrome print selection switching knob 9, release button 10, remaining film number display window 11, strobe charge confirmation window 12 on the back Winding knobs 13 are respectively arranged in the. When the switching knob 9 is set to the right when viewed from the front, the color shooting mode is set, and when it is set to the left, the monochrome shooting mode is set.

The outer label 4 is a strip-shaped piece of paper with an adhesive applied to the back surface, and is attached so as to be wound around the central portion of the unit body 3. The exterior label 4 is formed with an opening for exposing the taking lens 5, the finder objective window 6 and the like to the outside, and the usage method of the film unit 2 and precautions for use are printed.

As shown in FIG. 2, the unit main body 3 includes a main body base 16, an exposure unit 17, and a strobe unit 1.
8, a front cover 19, and a rear cover 20. A cartridge chamber 22 for accommodating a film cartridge 21 and a film roll chamber 24 for accommodating a photographic film 23 in a roll form are integrally provided on both sides of the main body base 16, and a photographic film is accommodated between them. An aperture 25 is formed to define the exposure range for 23. The winding knob 13 is attached to the upper surface of the cartridge chamber 22.

An exposure unit 17 is attached to the front surface of the main body base portion 16 and a strobe unit 18 is attached above the film roll chamber 24 side. The exposure unit 17 is a unit formed by integrally assembling the taking lens 5, the finder optical system, the shutter mechanism and the like on the shutter base 17a.

In the strobe unit 18, a strobe circuit for controlling charging and discharging is formed on one printed circuit board 31, and on the printed circuit board 31, a strobe light emitting section 7 for emitting strobe light and a charging circuit are provided. Capacitor 3
2, a battery holder 3 for holding a battery 33 for power supply
4, a charging switch 35, a synchronizing switch 36, and a changeover switch 37 are attached.

The strobe unit 18 holds a receiving plate 38 on its front surface. The receiving plate 38 slidably holds a switching plate 39 formed integrally with the switching knob 9 on the front surface thereof. The switching plate 39 has a pressing piece (not shown) integrally provided on the back surface thereof. Therefore, the switching knob 9
Is set to the right side when viewed from the front, that is, when the color photographing mode is set, the changeover switch 37 is pressed by the pressing piece and is turned on. When the selector knob 9 is set to the left side when viewed from the front, that is, when the monochrome photographing mode is set, the selector switch 37 is not pressed by the pressing piece and is turned off.

The front cover 19 is formed with an opening for exposing the taking lens 5, the stroboscopic light emitting section 7, the switching knob 9 and the like. The front cover 19 is assembled so as to cover the front surface of the main body base 16 to which each unit component is attached. The rear cover 20 includes bottom lids 20 a, 20 that close the bottoms of the cartridge chamber 22 and the film roll chamber 24.
b is integrally provided. A finder eyepiece window 20c is formed behind the finder optical system. Also,
The rear cover 20 is provided with a thin plate-shaped electromagnet 41 between the rear cover 20 and the photographic film 23.

As shown in FIG. 3, the electromagnet 41 generates a magnetic force when energized, and the battery 33 of the strobe unit 18 is used as its power supply. A synchro switch 36, a changeover switch 37, and a resistor 42 are connected in series between the electromagnet 41 and the battery 33, and the electromagnet 41 is energized only when both the synchro switch 36 and the changeover switch 37 are on. Is done. Further, the resistor 42 determines the current value to the electromagnet 41 based on its resistance value.

When the changeover knob 9 is set to the color photographing mode, the changeover switch 37 is turned on. Therefore, when the release button 10 is pressed and the synchro switch 36 is turned on, a current flows through the electromagnet 41. Also, the switching knob 9
Is set to the monochrome photographing mode, the changeover switch 37 is turned off, and therefore the synchro switch 36
No current flows through the electromagnet 41 regardless of the state. The main body base 16 is provided with a hole (not shown) at a position facing the strobe unit 18, and the strobe unit 18 and the electromagnet 41 are electrically connected through the hole.

The photographic film 23, as shown in FIG.
The subject image is exposed in the exposure range 51 defined by the aperture 25. The perforation 5 is formed on one edge of the photographic film 23 in the width direction so as to correspond to each exposure range 51.
Two are provided. Magnetic data 53 is recorded on the other edge of the photographic film 23. The magnetic data 53 is used as 1-bit data, and is used to select color / monochrome printing in this embodiment.

The photographic film 23 loaded in the film unit 2 has magnetic data 53 recorded in advance at the time of manufacture. When the image is photographed in the color photographing mode, the magnetic data 53 is erased by the electromagnet 41. When the monochrome photography mode is set, the magnetic data 53 is kept recorded. Magnetic data 53
Are read by a photographic printing system (not shown) to produce photographic prints in color / monochrome.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. In the film unit 2 manufacturing process, the magnetic data 53 is recorded on all frames of the photo film 23.
To record. The unit main body 3 is assembled, the film cartridge 21 is loaded in the cartridge chamber 22, and the photographic film 23 is loaded in the film roll chamber 24.
Close a and 20b. The exterior label 4 is attached to the unit body 3 to complete the film unit 2. The completed film unit 2 is packaged and arranged in a store.

The photographer can take a picture immediately on the spot of purchase. When the photographer winds up the winding knob 13, the photographic film 23 is conveyed by one frame. Also,
By operating the switching knob 9, either the color photographing mode or the monochrome photographing mode is set. When the switching knob 9 is set to the right side when viewed from the front, that is, in the color shooting mode, the switching switch 37 is pressed by the pressing piece and turned on, and when viewed from the front, the left side, that is, monochrome shooting. When set to mode
The changeover switch 37 is not pressed by the pressing piece and is turned off.

The photographer looks into the viewfinder, determines the photographing range, and presses the release button 10. The shutter blades are kicked and rotated by a shutter lever that is interlocked with the depression of the release button 10. The shutter blade opens and closes the shutter opening, and the subject image is exposed on the photographic film 23. The synchro switch 36 is turned on by the rotation of the shutter blades.

The switching knob 9 has a right side when viewed from the front, that is,
When the color photographing mode is set, when the synchro switch 36 is turned on, a current flows through the electromagnet 41.
Therefore, the electromagnet 41 generates a magnetic force and erases the magnetic data 53 of the photographic film 23. Also, the switching knob 9
However, when viewed from the front side, that is, on the left side, that is, when the monochrome photographing mode is set, no current flows through the electromagnet 41 even if the synchro switch 36 is turned on. Therefore, the electromagnet 4
No. 1 does not generate a magnetic force, and the magnetic data 53 of the photographic film 23 is kept recorded.

The film unit 2 which has been photographed is sent to a developing shop for development. At the developing shop, the film cartridge 21 is taken out from the bottom surface of the film unit 2. The film cartridge 21 is developed and printed by the photographic print system. The photographic print system reads the magnetic data 53 and creates a color print when the magnetic data 53 is not recorded and a monochrome print when the magnetic data 53 is recorded. Thereby, the magnetic data 53 can be recorded without incorporating the magnetic head, that is, without increasing the size.

In the above embodiment, one electromagnet 41 and one switching knob 9 are used to record 1-bit magnetic data 53. However, it is not limited to 1 bit and a plurality of bits may be recorded. It is also possible to record two bits of magnetic data 53 by using two switching knobs 9 for switching between four steps and one switching knob 9. Of course, two switching knobs 9 may be used.

Further, the film unit 2 of the above embodiment.
In the above, the electromagnet 41 is used to erase the magnetic data 53, but a permanent magnet may be used. As shown in FIG.
A magnetic data erasing mechanism 6 is provided behind the photo film 23.
1 is arranged. The magnetic data erasing mechanism 61 includes a permanent magnet 62 for erasing the magnetic data 53 and the permanent magnet 6
Two magnet holding members 63, 64 for holding 2 in the vertical direction
And two cams 65 for displacing the magnet holding members 63, 64, and a switching knob 66 for deciding whether or not to erase the magnetic data 53.

A hole (not shown) and a boss 64a are formed in the two magnet holding members 63 and 64 for coupling with each other.
In addition, the boss 63 for holding the cam 65 rotatably
b and 64b are formed respectively. Cam 65 is 3
The opening 65a at one end is rotatably held by the bosses 63b, 64b of the magnet holding members 63, 64, and the opening 65b at the other end is rotatably held by the rear cover 66. An opening 65c for displacing the magnet holding members 63, 64 is provided between the openings 65a, 65b.

The switching knob 66 projects from the main body 66a and the rear surface of the main body 66a, is exposed from the opening 67a provided in the rear cover 67, and the front surface of the main body 66a. It is composed of an arm portion 66d provided with 66c. The opening 67a is provided perpendicularly to the lateral direction of the film unit 2, and the operation piece 66b is slidable along the opening 67a. In addition, the pin 66c has an opening 65c at the center of the cam 65.
Has been inserted into.

By sliding the operation piece 66b in the lateral direction, the pin 66c presses the edge portion of the opening 65c to rotate the cam 65 around the opening 65b. Since the magnet holding members 63 and 64 are engaged with the openings 65a on their back surfaces, the magnet holding members 63 and 64 are displaced perpendicularly to the transport direction of the photographic film 23, and the permanent magnets 62 are erased to erase the magnetic data 53. The magnetic data 53 is displaced with respect to the storage position for keeping it recorded. As a result, it is possible to select whether or not to erase the magnetic data 53 by operating the operation piece 66b. The magnetic data erasing mechanism 61
Once the magnetic data 53 is erased, the magnetic data 53 cannot be recorded again.

Further, a return spring (not shown) may be arranged so that the permanent magnet 62 is arranged at the storage position for keeping the magnetic data 53 recorded, and the return spring (not shown) is forcedly operated in conjunction with the shutter release. Alternatively, the permanent magnet 62 may be placed in the storage position. Further, although the permanent magnet 62 is displaced perpendicularly to the conveying direction of the photographic film 23, it is displaced in parallel,
The magnetic data 53 may be erased.

In the above embodiment, the magnetic data 53 is used.
Was used as data for selecting color print or monochrome print, but other data may be used, such as pseudo zoom for enlarging and printing a part of the exposed subject image, or frame for the periphery of photographic print. It is also possible to indicate a frame composition for printing by adding, a print size for designating the size of a photographic print, and the like. Further, in the above-mentioned portable telephone, the photo film 23 is
Although the PS film is used, other types of photographic film may be used without any problem. For example, a magnetic recording layer may be provided outside the 135 type exposure range to record magnetic data.

[0032]

As described above, according to the lens-fitted film unit of the present invention, a photographic film having magnetic data recorded for each frame is loaded at the time of manufacture, and magnetic data erasing means for erasing the magnetic data, Since the operating member for switching whether or not to erase the magnetic data is provided, the additional data representing the photographing information can be magnetically recorded without increasing the size.

[Brief description of drawings]

FIG. 1 is an external perspective view of a lens-fitted film unit embodying the present invention.

FIG. 2 is an exploded perspective view showing a film unit with a lens.

FIG. 3 is an explanatory diagram showing a main part of a film unit with a lens.

FIG. 4 is an explanatory view showing a photographic film.

FIG. 5 is a flowchart showing a photographic printing method.

FIG. 6 is an exploded perspective view showing another embodiment of the film unit with lens.

[Explanation of symbols]

2 Film unit with lens 3 unit body 9,66 selector knob 10 Release button 16 body base 18 Strobe unit 20,67 Rear cover 21 film cartridge 22 Cartridge chamber 23 Photo Film 24 film roll room 25 aperture 36 Synchro switch 37 Changeover switch 38 Support plate 39 Switching plate 41 Electromagnet 51 exposure range 53 Magnetic data 61 Magnetic data erasing mechanism 62 permanent magnet 63, 64 magnet holding member 65 cam

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Claims (3)

[Claims] 1. A lens-fitted photo film unit in which a photo film is preliminarily loaded so that a photo film having magnetic data recorded for each frame is loaded at the time of manufacture, and a magnetic data erasing means for erasing the magnetic data, and a magnetic data erasing unit. A lens-fitted film unit, comprising: an operating member for switching whether or not to erase data. 2. The magnetic data erasing means includes an electromagnet that erases the magnetic data by energizing, and the operating member keeps energization of the electromagnet in a stopped state.
The lens-fitted photo film unit according to claim 1, wherein the photo film unit with lens is set to either a position or a second position for keeping energization of the electromagnet in a driven state. 3. The magnetic data erasing means includes a magnet set at either a data storage position for keeping the magnetic data recorded therein or a data erasing position for erasing the magnetic data. The member has a first position for displacing the magnet to a data storing position and a second position for displacing the magnet to a data erasing position.
2. The lens-fitted film unit according to claim 1, wherein the film unit with lens is set at any one of a position and a position.