Title:
BULB DEVICE OF CAMERAS
Document Type and Number:
Japanese Patent JPS5417726
Kind Code:
A
Abstract:
PURPOSE: To enable bulb photographing to be performed only with one manual changeover switch by disabling a power supply holding circuit with the manual operating switch and automatically cutting off the relation between an exposure control circuit and a magnet drive circuit.
Inventors:
SAWARA MASAYOSHI
NAKAI MASAAKI
NAKAI MASAAKI
Application Number:
JP8228077A
Publication Date:
February 09, 1979
Filing Date:
July 09, 1977
Export Citation:
Assignee:
MINOLTA CAMERA KK
International Classes:
G03B9/62; G03B9/08; (IPC1-7): G03B9/08