Patent ID: 6304722
Filing Date: 2001-10-16
Classification: G03B

Abstract:
A one-time use camera comprising a filmstrip having successive frames including first- and last-to-be-exposed frames and a pre-exposure frame immediately preceding said first-to-be-exposed frame, a backframe opening at which the respective frames of said filmstrip beginning with said first-to-be exposed frame and ending with said last-to-be-exposed frame are exposed during picture-taking, a film cartridge which contains a film take-up spool that is manually rotated decreasing angles of rotation to wind the respective frames of said filmstrip beginning with said pre-exposure frame from said backframe opening onto said spool, and an exposure-related component that must be enabled in order to operate, is characterized in that:a rotation-sensing detector for sensing rotation of said spool is connected with said exposure-related component to enable the exposure-related component when the spool is rotated an angle of rotation no greater than an angle sufficient to wind said last-to-be exposed frame onto said spool, whereby said exposure-related component can be enabled each time said spool is rotated to wind one of said frames of the filmstrip onto the spool.