Manual-wind camera
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorShigeru Iwamoto
Life of this patent
Estimating the term…
Abstract
A manual-wind camera having a wind lever in which a film having no sprocket holes is loaded, the film being wound on a take-up spool, frame by frame, by manually operating the wind lever, includes a pulse generator which generates pulses in accordance with movement of the film wound by the wind lever; a rear-cover state detector which detects whether a rear cover of the camera is open or closed; and a control device. The control device determines whether the film is loaded into the camera in accordance with pulses generated by the control device when the wind lever is fully turned from an initial operational position to a maximum operational position thereof.
Claims15
A manual-wind camera having a wind lever in which a film having no sprocket holes is loaded, said film being wound on a take-up spool, frame by frame, by manually operating said wind lever, said camera comprising:
- a pulse generator which generates pulses in accordance with movement of said film wound by said wind lever;
- and
- a control device;
- wherein
- said control device determines whether said film is loaded into said camera in accordance with pulses generated by said pulse generator when said wind lever is fully turned from an initial operational position to a maximum operational position thereof.
A manual-wind camera having a wind lever, a film being wound by manually turning said wind lever from an initial operational position to a maximum operational position thereof, said camera comprising:
- a pulse generator which generates pulses in accordance with movement of said film wound by said wind lever;
- a rear-cover state detector which detects whether a rear cover of said camera is open or closed;
- and
- a control device;
- wherein
- said control device detects said pulses generated by said pulse generator;
- and
- said control device determines whether said film is loaded into said camera in accordance with pulses detected by said control device when said wind lever is fully turned from said initial operational position to said maximum operational position after said rear-cover state detector detects that said rear cover is closed.
A manual-wind camera having a wind lever in which a film having no sprocket holes is loaded, said film being wound on a take-up spool, frame by frame, by manually operating said wind lever, said camera comprising:
- a pulse generator which generates pulses in accordance with movement of said film wound by said wind lever;
- a rear-cover state detector which detects whether a rear cover of said camera is open or closed;
- and
- a control device;
- wherein
- upon said rear cover being closed, said control device judges whether said film is loaded into said camera in accordance with pulses generated by said control device when said wind lever is fully rotated from an initial operational position to a maximum operational position.
A manual-wind camera having a wind lever in which a film having no sprocket holes is loaded, said film being wound on a take-up spool, frame by frame, by manually operating said wind lever, said camera comprising:
- a pulse generator which generates pulses in accordance with movement of said film wound by said wind lever;
- a rear-cover state detector which detects whether a rear cover of said camera is open or closed;
- and
- a control device;
- wherein
- upon said rear cover being closed, said control device judges whether said film is loaded into said camera when said wind lever has been fully rotated to a maximum operational position a second time.
Dependencies are inferred from the claim text.