JPH09222657A - Camera for film provided with magnetic information recording part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive camera by simplifying the constitution of a means for surely bringing a magnetic head into contact with the magnetic information recording part of film. SOLUTION: A film pressing plate 4 for securing the flatness of the film is arranged in the film feeding part of the camera 1 using the film 2 provided with the magnetic information recording part, and the magnetic head 5 for recording and reproducing information in/from the magnetic information recording part of the film 2 is attached to the pressing plate 4. A pressing member 9 generating fixed pressing force by itself and energizing the film 2 to the contact surface of the head 5 is arranged at a position opposed to the head 5 in a state where the film 2 is put in between. The member 9 is integrated and formed of a non-magnetic metallic plate and presses the film 2 to the head 5 by elastic force generated by itself so as to surely bring the head 5 into contact with the magnetic surface of the magnetic information recording part of the film 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a camera provided with a magnetic head for recording / reproducing various kinds of information on a film having a magnetic information recording section.

[0002]

2. Description of the Related Art A photographic film having a magnetic information recording portion (hereinafter referred to as a film having a magnetic information recording portion) is used, and various information such as photographing information and date is recorded by a magnetic head in the magnetic information recording portion of the film. A camera capable of reproducing is proposed in US Pat. No. 4860037.

In this type of camera (hereinafter referred to as a film camera with a magnetic information recording unit), in order to reliably record / reproduce information by the magnetic head as described above, Japanese Patent Laid-Open No. 3-264934 is disclosed. Discloses a structure in which a magnetic head is arranged on a film pressure plate for ensuring the flatness of the film and the magnetic head is brought into stable contact with the magnetic surface of the magnetic information recording portion.

When recording / reproducing in / from the magnetic information recording section,
It is important to surely bring the magnetic head into contact with the magnetic surface of the magnetic information recording section. In Japanese Patent Laid-Open No. 11237/1992, the shape of the pressing pad for pressing the film against the magnetic head is U-shaped. A magnetic head having improved contact properties is disclosed. Further, in order to improve the contactability of the magnetic head, the one using a plunger as disclosed in JP-A-3-264934 as a biasing means for the pressing pad to the head, or a member separate from the pressing pad. Known are those using leaf springs. JP-A-3-264934 discloses a structure in which a Teflon sheet is attached to the film contact surface of the pressing pad in order to reduce the frictional load between the pressing pad and the film.

[0005]

However, in each of the above-mentioned conventional examples, there is a problem that the means for surely bringing the magnetic head into contact with the magnetic information recording portion of the film has a complicated structure and the cost of the apparatus increases. It was For example, when the pressing pad is moved by the plunger, the plunger itself is expensive and a space for accommodating the plunger is required. Also, if a Teflon sheet is attached to the surface of the pressure pad or if it is fixed to a leaf spring that presses the magnetic head against the magnetic head, the configuration will be complicated and it will take time and effort to assemble. It becomes expensive, such as costly.

The present invention has been made in view of these circumstances, and the means for surely bringing the magnetic head into contact with the magnetic information recording portion of the film can have a simple structure and can be inexpensively constructed. It is an object to provide a film camera with a magnetic information recording unit.

[0007]

A film camera with a magnetic information recording section according to the present invention comprises a magnetic head for recording and reproducing information on a film with a magnetic information recording section, and a pressing member for pressing the film surface against the magnetic head. In the camera provided with, the pressing member is configured to press the film against the magnetic head by its own elastic force.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 relate to a first embodiment of the present invention. FIG. 1 is a cross-sectional view showing a configuration of a main part of a film camera with a magnetic information recording unit, and FIG. 2 is a perspective view showing a configuration of a pressing member. is there.

The camera 1 of the present embodiment is an example of the structure of a film camera with a magnetic information recording section that uses a film with a magnetic information recording section (hereinafter, simply referred to as a film) 2. The film feeding section of the camera 1 is provided with a film pressure plate 4 for pressing the back surface of the film 2 against the camera body 3 to ensure film flatness. A magnetic head 5 for recording / reproducing magnetic information is attached to the film pressure plate 4, and its head contact surface is the film 2
Is arranged so as to be able to come into contact with the magnetic information recording section of.

The camera body 3 is provided with a cartridge accommodating portion 7 for accommodating the film cartridge 6 and a film winding portion 8 for accumulating and accommodating the film 2 at the left and right ends thereof. A film feeding tunnel surrounded by the camera body 3 and the film pressure plate 4 is formed between the winding unit 8 and the winding unit 8.

In order to surely bring the film 2 into contact with the magnetic head 5 at a position opposed to the magnetic head 5 with the film 2 interposed therebetween, a constant pressing force is generated by the film 2 so that the film 2 is moved to the magnetic head 5. A pressing member 9 for urging the contact surface is provided, and a base end portion of the pressing member 9 is attached and fixed to the camera body 3 by a fixing screw 10.

As shown in FIG. 2, the pressing member 9 has a pressing portion 9a which contacts the magnetic head 5 through the film 2.
And an elastic portion 9b that generates an elastic force by bending when attached to the camera body 3 and an attachment portion 9c that is an attachment hole that is provided in the base end portion and through which the fixing screw 10 is inserted. There is. The material of the pressing member 9 is formed of a non-magnetic metal (eg, austenitic stainless steel, phosphor bronze, etc.).

When information is recorded / reproduced on / from the magnetic information recording portion of the film 2, the elastic force generated by the pressing member 9 itself, in which the pressing portion 9a and the elastic portion 9b are integrated, causes the film 2 to move to the magnetic head. The magnetic head 5 and the magnetic surface of the magnetic information recording portion of the film 2 can be reliably brought into contact with each other by pressing the magnetic head 5 against the magnetic head 5.

In the structure of the first embodiment, the pressing member formed of the non-magnetic metal leaf spring is provided, and the pressing force to the magnetic head is obtained by the elastic force of the pressing member itself. It is possible to provide an inexpensive film camera with a magnetic information recording unit because the means for sure contact can be constructed at a low cost with a simple structure.

Further, if this pressing member 9 is grounded to the ground of the camera, the effect of eliminating static electricity generated by the friction between the film 2 and the camera body 3 and the film pressure plate 4 can be obtained.

3 and 4 relate to a second embodiment of the present invention. FIG. 3 is a sectional view showing the structure of the main part of a film camera with a magnetic information recording unit, and FIG. 4 shows the structure of a pressing member. It is a perspective view.

The second embodiment is an example in which the structure of the pressing member for pressing the film 2 against the magnetic head 5 is changed.
The other constituent elements are the same as those in the first embodiment, and the description thereof is omitted here.

The pressing member 12 of the second embodiment is made of a thermoplastic resin (for example, POM, PC, PBT, PA).
Etc.), and the base end portion thereof is attached and fixed to the camera body 3 by the fixing screw 10. As shown in FIG. 4, the pressing member 12 includes a pressing portion 12a that contacts the magnetic head 5 through the film 2, an elastic portion 12b that generates an elastic force when attached to the camera body 3, and a base end portion. The mounting portion 12c formed of a mounting hole through which the provided fixing screw 10 is inserted is integrally formed.

FIG. 5 shows a modification of the pressing member 12.
The pressing member 14 of the modified example is configured such that elastic portions 14b are extended at both ends of the pressing portion 14a and mounting portions 14c are provided at these end portions, and the camera is fixed by the fixing screw 10 at the mounting portions 14c at both ends. It is attached and fixed to the main body 3.
In this way, the pressing member 14 integrally formed by providing the elastic portions 14b at both ends of the pressing portion 14a can also obtain the same effect as that of the pressing member 12.

In the structure of the second embodiment, since the material of the pressing member is formed of the thermoplastic resin, it does not have the static electricity removing effect as in the first embodiment, but the film and the magnetic material are the same as in the first embodiment. The means for surely contacting the head can be inexpensively configured with a simple structure, and an inexpensive film camera with a magnetic information recording unit can be provided.

6 and 7 relate to a third embodiment of the present invention. FIG. 6 is a perspective view showing the structure of the main part of a film camera with a magnetic information recording section, and FIG. 7 is a vicinity of the pressing member of FIG. 3 is a cross-sectional view showing the configuration of FIG.

The third embodiment is an example in which a pressing member for pressing the film 2 against the magnetic head 5 is formed integrally with the camera body. The other constituent elements are the same as those in the first embodiment, and the description thereof is omitted here.

The camera body 3 is integrally formed with a pressing member 16 for pressing the film 2 against the magnetic head 5 by its own elastic force. The pressing member 16 is formed by extending from the camera body 3, and has a pressing portion 16a that comes into contact with the magnetic head through a film at a tip portion thereof, and a plate-shaped elastic portion 16b that generates elastic force due to its own bending at an intermediate portion. It has been configured into.

In recent inexpensive cameras, the camera body is often formed of polycarbonate or the like. In view of this, in the present embodiment, the camera body 3 and the pressing member 16 are integrally formed of a thermoplastic resin or the like to form a means for reliably contacting the film and the magnetic head.

In the structure of the third embodiment, the pressing member is formed integrally with the camera body, and the pressing force to the magnetic head is obtained by the elastic force of the pressing member itself, so that the film and the magnetic head are securely connected. By integrally forming the means for contacting with the camera body with a simple structure, it can be constructed at low cost,
It is possible to provide an inexpensive film camera with a magnetic information recording unit.

FIGS. 8 and 9 relate to a fourth embodiment of the present invention, and FIG. 8 is a perspective view showing the structure of a magnetic head and a pressing member provided in a film camera with a magnetic information recording unit,
FIG. 9 is a cross-sectional view of the pressing member of FIG. 8 viewed from the side.

The fourth embodiment shows another structural example of the pressing member for pressing the film 2 against the magnetic head 5. The other constituent elements are the same as those in the first embodiment, and the description thereof is omitted here.

A pressing member 18 made of a bent non-magnetic metal wire is provided above the film contact surface of the magnetic head 5 provided on the film pressure plate 4 and the like. The pressing member 18 has a U-shaped tip, and two wire rods on both sides of the U-shape are arranged perpendicularly to the film feeding direction. The film 2 is pressed against the magnetic head 5 by the elastic force generated from the wire material itself. Although not shown,
The mounting portion at the base end of the pressing member 18 is mounted and fixed to the camera body 3. Further, as shown in FIG. 9, the camera body 3 forms a guide so that the end surface of the film is not caught by the pressing member 18.

In the structure of the fourth embodiment, since the pressing member formed of the non-magnetic metal wire spring is provided,
It is not necessary to invest in a mold for assembling the pressing member, the means for surely contacting the film and the magnetic head can be configured at a low cost with a simple structure, and an inexpensive film camera with a magnetic information recording portion can be provided.

[Additional Notes] (1) In a film camera with a magnetic information recording section, comprising a magnetic head for recording and reproducing information on a film with a magnetic information recording section, and a pressing member for pressing the film surface against the magnetic head. A film camera with a magnetic information recording unit, wherein the pressing force of the pressing member against the magnetic head is set by the elastic force of the pressing member itself.

(2) A pressure plate that presses against the back surface of the photographic film to ensure flatness, a magnetic head installed on the pressure plate for recording / reproducing information on / from the film with a magnetic information recording section, and to the magnetic head. In a film camera with a magnetic information recording unit including a pressing member for pressing a film surface, the pressing member has a spring elastic force by itself, and this elastic force causes a film pressing force to a magnetic head. A film camera with a characteristic magnetic information recording unit.

(3) In Additions 1 and 2, the pressing member is a resin plate spring, and the film camera with a magnetic information recording unit is characterized.

(4) A film camera with a magnetic information recording section, characterized in that the resin leaf spring is made of a thermoplastic resin.

(5) In Additions 1 and 2, the pressing member is a non-magnetic metal spring, and the film camera with a magnetic information recording section is characterized.

(6) In Supplementary Note 5, the non-magnetic metal spring is formed of austenitic stainless steel or phosphor bronze as a material, and the film camera with a magnetic information recording section is provided.

(7) In the supplementary notes 1 and 2, the pressing member is a non-magnetic metal leaf spring, and the film camera with a magnetic information recording section is characterized.

(8) In Supplementary Notes 1 and 2, the pressing member is a non-magnetic metal wire spring, and the film camera with a magnetic information recording section is characterized.

(9) In Additions 1 and 2, the pressing member is formed of a non-magnetic metal wire spring and has a U-shaped tip, and two wires on both sides of the U-shaped film feed. A film camera with a magnetic information recording unit, which is disposed substantially perpendicular to the feeding direction, and biases the film surface so as to contact the magnetic head.

(10) In Additions 1 and 2, the pressing member is integrally formed with the camera body, and the film camera with a magnetic information recording unit is characterized.

(11) In Appendix 2, the pressing member is grounded so as to remove static electricity generated by friction between the fed film and the camera body and the pressure plate. Film camera.

[0041]

As described above, according to the present invention, it is possible to simplify the constitution of means for surely bringing the magnetic head into contact with the magnetic information recording portion of the film, and the film camera with the magnetic information recording portion can be manufactured at a low cost. There is an effect that it can be configured.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a main part of a film camera with a magnetic information recording unit according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a pressing member according to the first embodiment.

FIG. 3 is a sectional view showing a configuration of a main part of a film camera with a magnetic information recording section according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a configuration of a pressing member according to a second embodiment.

FIG. 5 is a cross-sectional view showing a modified example of the pressing member of the second embodiment.

FIG. 6 is a perspective view showing a configuration of a main part of a film camera with a magnetic information recording section according to a third embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a configuration near a pressing member according to a third embodiment.

FIG. 8 is a perspective view showing a configuration of a magnetic head and a pressing member provided in a film camera with a magnetic information recording section according to a fourth embodiment of the present invention.

FIG. 9 is a cross-sectional view of a pressing member according to a fourth embodiment as viewed from the side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Camera 2 ... Film 3 ... Camera main body 4 ... Film pressure plate 5 ... Magnetic head 9 ... Pressing member 9a ... Pressing part 9b ... Elastic part 9c ... Mounting part

Claims (3)

[Claims] 1. A film camera with a magnetic information recording section, comprising: a magnetic head for recording / reproducing information on / from a film with a magnetic information recording section; and a pressing member for pressing a film surface against the magnetic head. Is a film camera with a magnetic information recording unit, which presses a film against a magnetic head by its own elastic force. 2. The film camera with a magnetic information recording unit according to claim 1, wherein the pressing member is made of resin or non-magnetic metal and has an elastic portion integrally formed. 3. A pressure plate which is pressed against the back surface of the photographic film to ensure flatness, and a magnetic head which is installed on the pressure plate to record / reproduce information on / from a film having a magnetic information recording section.
In a film camera with a magnetic information recording unit, comprising a pressing member that abuts against the film and presses the film surface against the magnetic head, the pressing member is fixed to the camera body and an abutting portion that abuts the film surface. A magnetic information recording section, comprising: a fixing section for connecting the contact section and the fixing section; and an elastic section configured to connect the contact section with the fixing section and urging the contact section in a direction in which the contact section is pressed against the film surface. Film camera.