Photographic film with magnetic recording track and method of recording on the track and reproduction from the same

• US 4,613,911 A
• Filed: 12/04/1984
• Issued: 09/23/1986
• Est. Priority Date: 12/06/1983
• Status: Expired due to Term

• Current Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Ohta, Takahiro
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): Atkinson, William M.
• Application Number:
  US06/677,835
• Time in Patent Office: 658 Days
• Field of Search: 428/692, 428/119, 428/694, 428/192, 428/900, 430/140, 430/934, 360/3, 352/37, 352/233, 352/236, 352/92, 352/27
• US Class Current: 360/3
• CPC Class Codes: G03B 2217/244 Magnetic devices
• CPC Class Codes: G03B 31/02 in which sound track is on a moving-picture film
• CPC Class Codes: G11B 5/488 Disposition of heads G11B5/49, G11B5/52 take precedence
• CPC Class Codes: Y10S 428/90 Magnetic feature
• CPC Class Codes: Y10S 430/135 Cine film

Abstract

Photographic film is provided with a magnetic recording layer applied to at least one edge surface thereof in the longitudinal direction of the film and substantially over the entire thickness thereof. A magnetic head of a recording-reproducing system is positioned upon recording or reproduction so that a magnetic field is established in the direction of thickness of the film or the direction of width of the magnetic recording layer.

Claims

1. A method of magnetic recording on photographic film having a magnetic recording layer coated on an edge surface of the film in the longitudinal direction thereof and magnetic reproduction from the same characterized in that a magnetic head is positioned with respect to said edge surface of the film so as to establish a magnetic field in the direction of thickness of the film upon recording and so as to read a magnetic field in the direction of thickness of the film upon reproduction, with the magnetic head being kept spaced from the film, thereby accomplishing Y-direction recording or reproduction.