Camera using film having magnetic recording portion
US5343264A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/244
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a camera using a film having a magnetic recording portion, which has magnetic heads for recording/reading data on/from a magnetic recording portion formed on part of a photosensitive film, which magnetic heads can be urged/withdrawn against/from the film. In this camera, data representing the number of times that a film feed operation or a photographic operation is performed is stored in a storage unit, and necessity to clean the magnetic heads is determined on the basis of the data. If it is determined that cleaning must be performed, a warning unit performs a warning display or inhibits a photographic operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.