Title:
【発明の名称】カメラのフィルム種類判別装置及びカウンター切替装置
Document Type and Number:
Japanese Patent JP2860241
Kind Code:
B2
Abstract:
A camera is of a type using the 120 size of roll film or the 220 size of roll film, which is so arranged that the height of a pressure plate on a back lid is changed over depending upon a type of a used film. A reflection-type photosensor is provided in the camera body, whereby a state of a lock mechanism of the back lid is detected. A second reflective plate is mounted on the pressure plate, and the second reflective plate reflects light from the photosensor when the back lid is in a lock state. A reflecting position where the light from the photosensor impinges is changed between reflective portions depending upon the height of the pressure plate. Since reflectivities of these reflective portions are different from each other, the height of the pressure plate, that is, the type of the used film can be determined by analyzing an output from the photosensor receiving the reflected light from the second reflective plate.
Inventors:
GOTO SHIGEKANE
SAITO TATSUO
HASHIMOTO SHIRO
SAITO TATSUO
HASHIMOTO SHIRO
Application Number:
JP31682393A
Publication Date:
February 24, 1999
Filing Date:
December 16, 1993
Export Citation:
Assignee:
FUJI SHASHIN KOKI KK
International Classes:
G03B1/50; G03B17/02; G03B17/18; G03B17/28; G03B17/00; G03B17/36; (IPC1-7): G03B17/28; G03B17/36
Domestic Patent References:
| JP614939U | ||||
| JP4511785B1 | ||||
| JP4218564Y1 | ||||
| JP4632782Y1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa (3 outside)