Photo film support device and magnetic head securing method for the same

A magnetic head securing method for a camera, said camera including a photo film support plate for supporting a back of photo film, said photo film having a magnetic recording area, an opening formed in said photo film support plate, and a magnetic head, disposed to project forwards from inside said opening, for recording information to and/or reading information from said magnetic recording area, said magnetic head securing method comprising steps of:

• disposing at least first and second head support projections in at least first and second positions defined in said opening opposite to each other, said first and second head support projections projecting from said opening rearwards by a predetermined height;
• mounting at least one spacer behind said photo film support plate and outside said first and second head support projections, said spacer having a predetermined thickness smaller than said predetermined height;
• after mounting said spacer, mounting a head base plate on said photo film support plate in contact with said first and second head support projections, said head base plate covering said opening and supporting said magnetic head;
• and
• pouring and hardening adhesive agent between said head base plate and said spacer.

A photo film support device, incorporated in a camera, for supporting a back of photo film, said photo film having a magnetic recording area, said photo film support device comprising:

• a photo film support plate;
• an opening formed in said photo film support plate;
• a magnetic head, disposed to project forwards from inside said opening, for recording information to and/or reading information from said magnetic recording area;
• a head base plate, mounted on a rear face of said photo film support plate to cover said opening, for supporting said magnetic head;
• adhesive agent, applied to at least one portion of said periphery of said head base plate, and hardened for securing said head base plate to said photo film support plate;
• and
• at least one recess or at least one projection disposed on a periphery of said head base plate and/or on a rear face of said head base plate in a vicinity of said periphery, said adhesive agent being disposed to extend from a front face of said head base plate to a surface of said recess or said projection, said recess or said projection enlarging a contact area between said adhesive agent and said head base plate.

A photo film support device, incorporated in a camera, for supporting a back of photo film, said photo film having a magnetic recording area, said photo film support device comprising:

• a photo film support plate;
• an opening formed in said photo film support plate;
• a magnetic head, disposed to project forwards from inside said opening, for recording information to and/or reading information from said magnetic recording area;
• at least first and second head support projections, disposed in at least first and second positions defined in said opening opposite to each other, said first and second head support projections projecting from said opening rearwards by a predetermined height;
• a head base plate, mounted on a rear face of said photo film support plate, contacted by said first and second head support projections to cover said opening, for supporting said magnetic head;
• at least one spacer, mounted between said photo film support plate and said head base plate and outside said first and second head support projections before said head base plate is mounted on said photo film support plate, said spacer having a predetermined thickness smaller than said predetermined height;
• and
• adhesive agent poured and hardened between said head base plate and said spacer.