Title:
【発明の名称】カメラ及びフィルム
Document Type and Number:
Japanese Patent JP2947258
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the image quality of a film, especially the resolution by providing a sensor which is provided in a position in the vicinity of one edge part of the film and for detecting magnetic information and controlling the winding of the film, based on the signal of the sensor. SOLUTION: The width of the film is set 35mm, but perforations are not provided. For detecting the feed rate of the film, magnetic marks 4 are provided on a line at an interval of 0.25mm from one edge pat of the film. Further, a magnetic sensor 41 is provided in a body 11, to hold the magnetic marks 4 from both surfaces of the film. Therefore, at the time of feeding the film, the number of the magnetic marks 4 is counted and when the number of the magnetic marks 4 reaches a fixed one, the feeding of the film is stopped so that on the film, frames are formed at accurate pitches. Since the length in the width direction of the film of the frame is 30mm, the length is 0.25 times of 24mm in the width direction of a present 35mm film and the image quality (resolution) is enhanced by 25%.
Inventors:
MURAKAMI SUSUMU
Application Number:
JP7377598A
Publication Date:
September 13, 1999
Filing Date:
March 23, 1998
Export Citation:
Assignee:
SONII KK
International Classes:
G03C1/765; G03B17/00; G03B17/24; (IPC1-7): G03B17/24; G03B17/00; G03C1/765
Attorney, Agent or Firm:
Hidekuma Matsukuma