JPH0460531A - Camera using film with magnetic memory - Google Patents

Abstract

PURPOSE:To set the angle between the head gap of a magnetic head and the line connecting two position restriction parts to 90 deg. by adjusting at least one of the two position restriction parts. CONSTITUTION:The breadthwise end part of a film 6 abuts on an adjusting ring 14 and the film guide part 7c of a guide member 7 to restrict the position of the film 6. For the purpose, the thickness (t) of the adjusting ring 14 is varied to set the angle alpha between the breadthwise end part of the film 6 abutting on the adjusting ring 14 and the film guide part 7c of the guide member 7 and the head gap of the magnetic head 11 to 90 deg.. Consequently, the squareness between the breadthwise end part of the film abutting on the respective position restriction parts and the heat gap of the magnetic head 11 can be ensured.

Description

[Detailed Description of the Invention] (Field of Application of the Invention) The present invention uses a film with a magnetic storage unit that is equipped with a magnetic head that records information in a magnetic storage unit provided on the film or reads information from the magnetic storage unit. It concerns improvements to cameras.

(Background of the Invention) In recent years, films equipped with a magnetic storage section are used, and information such as shutter speed, aperture value, date, etc. is written in the magnetic storage section using a magnetic head, and this information is also written as necessary. The camera that made it possible to read out data is U.S. Patent No. 48643.
It has been proposed in No. 32, etc. Furthermore, the applicant of the present application has proposed various methods for accurately writing information to (or reading information from) the magnetic storage section using a magnetic head.

However, the above conventional example had the following problems.

In other words, in the above conventional example, a configuration is disclosed in which the magnetic head is moved to follow the up and down movement of the film during film feeding, but in order to guarantee this in the first place, it is necessary to This is possible only when the perpendicularity between the head gap and the position regulating part that regulates the position of the end in the width direction is guaranteed, and no equivalent disclosure has been made regarding measures for ensuring this perpendicularity.

(Objective of the Invention) An object of the present invention is to solve the above-mentioned problems, and to improve the head gap between the widthwise end of the film that contacts each position regulating part and the magnetic head with a simple structure and easy work. It is an object of the present invention to provide a camera using a film with a magnetic storage part that can guarantee perpendicularity.

(Features of the Invention) In order to achieve the above object, the present invention provides a guide member with:
Two position regulating parts are provided which are arranged at a predetermined distance and abut against the ends in the width direction of the film to regulate the position thereof,
At least one of them has an angle of 90° between the head gap of the magnetic head and a line connecting the two position regulating parts.
It is constructed by a member that can be adjusted so that 2
By simply adjusting at least one of the position regulating parts, the head gap of the magnetic head can be adjusted.
It is characterized in that the angle formed by the line connecting the position regulating parts is 90°.

(Embodiments of the Invention) Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a back view of a camera showing an embodiment of the present invention, in which 1 is a camera body, 2 is a pressure plate, 3 is a film cartridge chamber, 4 is a fork that transmits film feeding force,
5 is a spool chamber, and 6 is a film provided with a magnetic storage section (not shown).

A guide member 7 has an elongated hole 7d as shown in FIG. 2, and is attached to the camera body 1 with a shaft screw 10 so as to be vertically and rotatably movable. It also has a mounting portion 7a for the magnetic helad 11, to which the magnetic helad 11 fixed to the base plate 13 is screwed. Furthermore, it has a shaft portion 7b and a film guide portion 7c.

Reference numeral 8.9 denotes a spring, which has the function of biasing the guide member 7 so that the guide member 7 always comes into contact with the widthwise end of the film 6 to regulate its position when the film 6 moves up and down. Reference numeral 12 denotes a flexible printed circuit board for wiring from the magnetic head 11 to the control section of the camera body 1. 14 is an adjustment ring.

The adjustment ring 14 is attached to a shaft portion 7b provided on the guide member 7.
It is rotatably inserted into the holder, and is attached with screws so that it cannot be removed, as shown in Fig. 3. This adjustment ring 1
4 and the film 6 on the film guide portion 7c of the guide member 7.
The ends of the film 6 in the width direction come into contact with each other, thereby regulating the position of the film 6.

Therefore, by changing the wall thickness t of this adjustment ring 14, as shown in FIG.
It becomes possible to maintain the angle α between the widthwise end of the film 6 in contact with the film guide portion 7c and the head gap of the magnetic head 11 at 900 degrees.

FIG. 5 is a diagram showing the main parts of another embodiment of the present invention. In this embodiment, two adjustment rings 1 are provided in the film guide section.
4.15, and the angle α between the widthwise end of the film 6 and the head gap of the magnetic helad 11 is maintained at 90'.

In the case of such a configuration, the positional accuracy of both shaft parts can be fairly rough, and can be achieved only by inserting parts with different wall thicknesses (11tz) into the shaft parts as shown in the figure. Further, in this case, the distance β to the magnetic helad 11 can also be easily adjusted.

According to this embodiment, the widthwise ends of the film 6 are arranged such that the head gap of the magnetic head 11 is perpendicular to the widthwise ends of the film 6 (that is, relative to the magnetic storage section). It is necessary to configure the guide member 7 that regulates the position of the adjustment ring 14 (15), but since this can be done only by changing the wall thickness of the adjustment ring 14 (15), the configuration and work required to realize this are simple. It gets easier. That is, the thickness of the adjustment ring 14 is determined by measuring the head gap of the magnetic helad 11 and the positions of the guide member 7c and the shaft portion 7b using a tool and performing simple calculations. The purpose can be achieved by simply inserting the adjusting ring determined in this way into the shaft portion 7b. This is very effective, especially in mass production, including reduction in man-hours.

(Correspondence between the invention and the embodiments) In this embodiment, the guide member 7 is the guide member of the present invention, the springs 8 and 9 are the holding members, the adjustment rings 14 and 15,
The film guide section 7c corresponds to a position regulating section.

(Effects of the Invention) As described above, the present invention provides two position regulating parts that are arranged at a predetermined distance on the guide member and that come into contact with the ends of the film in the width direction to regulate the position thereof. and at least one of them is made of a member that can be adjusted so that the angle formed by the head gap of the magnetic head and the line connecting the two position regulating parts is 90°, so that the two positions can be adjusted. By simply adjusting at least one of the position regulating parts, the angle between the head gap of the magnetic head and the line connecting the two position regulating parts can be set to 90', resulting in a simple configuration. With this and easy operation, it is possible to ensure the perpendicularity between the widthwise end of the film that abuts each position regulating part and the head gap of the magnetic head.

[Brief explanation of the drawing]

Fig. 1 is a back view of a camera showing one embodiment of the present invention;
The figure is a perspective view of the guide section shown in FIG. 1, FIG. 3 is a sectional view showing the attachment force of the adjustment ring shown in FIG. 1, and FIG. 4 is a film guide section, adjustment ring, and magnetic head in one embodiment of the present invention. FIG. 5 is a diagram showing the positional relationship between the film guide section, the adjustment ring, and the magnetic head in another embodiment of the present invention. 2...Press plate, 6...Film with magnetic memory section, 7...Guide member, 8.9...
Spring, 10... Axis screw, 11... Magnetic head, 14.15... Adjustment ring.

Claims (1)

[Claims] (1) A magnetic head that writes information to or reads information from a magnetic storage section provided on the film when the film is fed;
A guide member that holds the magnetic head and regulates the position of the edge in the width direction of the film, and the guide member is movable perpendicularly to the film running direction and rotatable on a plane parallel to the film. A camera using a film with a magnetic storage unit, the camera having a holding member for holding the film, the guide member including:
Two position regulating parts are provided which are arranged at a predetermined distance and abut against the ends in the width direction of the film to regulate the position thereof,
A film with a magnetic memory unit, characterized in that at least one of the magnetic head members is configured by a member that can be adjusted so that the angle formed by the head gap of the magnetic head and a line connecting the two position regulating units is 90°. camera using.