Lens-fitted photo film unit and data recording method therefor

摘要

A lens-fitted photo film unit contains a cartridge shell into which an IC memory is incorporated, and a roll of photo filmstrip having a magnetic recording layer. Unit ID data and date-of-manufacture data are written in the IC memory in the factory. A data recording circuit is provided on a flash circuit board. The data recording circuit is connected to the IC memory through a printed circuit board mounted to a cartridge chamber of the film unit. A finder mask and a photo sensor for detecting the position of the finder mask are mounted in the film unit. The photo sensor is connected to the data recording circuit, to write photographic data corresponding to the output of the photo sensor in the IC memory at each exposure. Before printing, the data written in the IC memory is read to be recorded on the magnetic recording layer of the photo filmstrip by use of an external recording device which is connectable to the IC memory through an interface terminal which is exposed to an exterior of the film unit.