One-time use camera loading method
First Claim
1. A method for loading a film cartridge in a one-time use camera, said cartridge having a filmstrip, said method comprising the steps of:
- placing the film cartridge in a film cartridge chamber of a camera frame assembly;
mounting an anti-backup subsystem on said camera frame assembly, said anti-backup subsystem having first and second mechanical members, said first mechanical member being biased into a disengaged position relative to said second mechanical member;
following said mounting, winding a main portion of the filmstrip from said film cartridge to a film supply chamber of said camera frame assembly in a prewind direction;
prior to said winding, light-tightly closing said film chambers;
following said winding, biasing said first mechanical member into an engaged position relative to said second mechanical member, wherein said anti-backup system precludes winding of said filmstrip in said prewind direction.
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Accused Products
Abstract
In a method for loading a film cartridge in a one-time use camera, the film cartridge is placed in a film cartridge chamber of a camera frame assembly. An anti-backup subsystem is mounted on the camera frame assembly. The anti-backup subsystem has a first mechanical member biased into a disengaged position. A main portion of the filmstrip is then wound, in a prewind direction, from the film cartridge to a film supply chamber of the camera frame assembly. Following the winding, the first mechanical member is biased into an engaged position, in which the anti-backup system precludes winding of the filmstrip in the prewind direction. The first mechanical member can be biased by applying a label to a casing of the camera.
25 Citations
20 Claims
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1. A method for loading a film cartridge in a one-time use camera, said cartridge having a filmstrip, said method comprising the steps of:
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placing the film cartridge in a film cartridge chamber of a camera frame assembly;
mounting an anti-backup subsystem on said camera frame assembly, said anti-backup subsystem having first and second mechanical members, said first mechanical member being biased into a disengaged position relative to said second mechanical member;
following said mounting, winding a main portion of the filmstrip from said film cartridge to a film supply chamber of said camera frame assembly in a prewind direction;
prior to said winding, light-tightly closing said film chambers;
following said winding, biasing said first mechanical member into an engaged position relative to said second mechanical member, wherein said anti-backup system precludes winding of said filmstrip in said prewind direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for loading a one-time use camera, comprising the steps of:
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placing a film cartridge in a camera frame assembly, said film cartridge having a cartridge spool and a filmstrip attached to said cartridge spool;
connecting a thumbwheel to said cartridge spool, said thumbwheel being rotatable with said cartridge spool;
assembling a pawl and a cover with said camera frame assembly, said pawl being disposed in a disengaged position wherein said pawl is displaced from said thumbwheel sufficient to permit rotating of said thumbwheel and said cartridge spool in opposed prewind and advance directions;
following said assembling, winding a main portion of said filmstrip from said film cartridge to a film supply chamber of said camera frame assembly in said prewind direction;
following said winding, installing a label on said cover, said label bearing on said pawl and biasing said pawl to an engaged position against said thumbwheel, wherein said thumbwheel and pawl preclude any further winding of said filmstrip in said prewind direction. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for loading a film cartridge in a one-time use camera, said cartridge having a filmstrip, said method comprising the steps of:
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placing the film cartridge in a camera frame assembly;
mounting an anti-backup subsystem on said camera frame assembly, said anti-backup subsystem having first and second mechanical members, said first mechanical member being biased into a disengaged position relative to said second mechanical member;
following said mounting, winding a main portion of the filmstrip, in a prewind direction, from said film cartridge to a film supply chamber of said camera frame assembly;
following said winding, attaching a label over said first mechanical member, said label directly biasing said first mechanical member to an engaged position relative to said second mechanical member, wherein said anti-backup system precludes winding of said filmstrip in said prewind direction. - View Dependent Claims (18, 19, 20)
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Specification