Other

Hisashi Tasaka

Shinsuke Ito

Masaaki Handa

Yukitsugu Hata

A data-imprinting apparatus for preventing the imprinting of incorrect dates in a lens-equipped film unit that lacks a monitor display unit for the confirmation of the date display. The lens-equipped film unit contains a built-in data module that lacks an external display unit that allows the confirmation of the date display from the outside. The data module contains a transmission-type liquid crystal display unit that automatically updates and displays dates based upon a pre-stored calendar. In the liquid crystal display unit external light enters from the light collection window on the front cover , thus creating a beam of data light. The data light, acting in concert with the shutter release operation, is guided into a dark box. The image-forming optical system that is provided in the dark box forms an image of the data light on a part of the photographic film. When a temporary disruption of the power supply from the battery occurs due to vibrations, for example, the power supply monitoring circuit that is incorporated in the data module detects the event, transmits the off-mode signal to the LCD driver , and causes the display on the liquid crystal display unit to enter into a non-display state.

Growing community of inventors

Minami-ashigara, Japan

Hisashi Tasaka