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US 5,854,954 AGranted
Light tight chamber with closure and sensor for position of closure and cassette in chamber
AssigneeEastman Kodak Company
InventorJeffrey Charles Robertson
Life of this patent
Estimating the term…
Abstract
Apparatus (10) for using light-sensitive web material includes a cassette chamber (12) which is closed by a closure (20) when a cassette (18) of the material has been installed. A single sensor (30, 32; 50-64) is provided to detect that the cassette is present, properly oriented and filled with the right material and that the closure is properly closed.
Claims7
Apparatus for using light-sensitive web material, comprising:
- a chamber in the apparatus, for receiving a cassette of the material;
- a light-tight closure for the chamber;
- only one sensor, actuated by cooperation of both the closure and a cassette upon closing of the closure, for sensing both that the cassette is present in the chamber and that the chamber is closed by the closure and for producing a signal;
- and
- an indicator responsive to the signal to indicate either that the cassette is not present, or that the chamber is not closed, or both;
- wherein the sensor is a micro-switch mounted on the closure, the micro-switch having an actuator arm which contacts a surface of a cassette when the chamber is closed.
3 more elements
Apparatus for using light-sensitive web material, comprising:
- a chamber in the apparatus, for receiving a cassette of the material;
- a light-tight closure for the chamber;
- only one sensor, actuated by cooperation of both the closure and a cassette upon closing of the closure, for sensing both that the cassette is present in the chamber and that the chamber is closed by the closure and for producing a signal;
- and
- an indicator responsive to the signal to indicate either that the cassette is not present, or that the chamber is not closed, or both;
- wherein a cassette is installed in the chamber;
- and the sensor comprises a first reflective member mounted on the closure, a second reflective member mounted on the cassette;
- a source of light for directing a beam from the first reflective member to the second;
- and means for detecting that the beam has reflected from both reflective members.
6 more elements
Apparatus for using light-sensitive web material, comprising:
- a chamber in the apparatus, for receiving a cassette of the material;
- a light-tight closure for the chamber;
- only one sensor, actuated by cooperation of both the closure and a cassette upon closing of the closure, for sensing both that the cassette is present in the chamber and that the chamber is closed by the closure and for producing a signal:
- and an indicator responsive to the signal to indicate either that the cassette is not present, or that the chamber is not closed, or both;
- wherein a cassette is installed in the chamber;
- and the sensor comprises a first reflective member mounted on the closure, a second reflective member mounted on the cassette and an optical transmitter/receiver for directing a beam from the first reflective member to the second and for receiving a reflected beam.
3 more elements
Apparatus for using light-sensitive web material, comprising:
- a chamber in the apparatus, for receiving a cassette of the material;
- a light-tight closure for the chamber;
- only one sensor, actuated by cooperation of both the closure and a cassette upon closing of the closure, for sensing both that the cassette is present in the chamber and that the chamber is closed by the closure and for producing a signal;
- and
- an indicator responsive to the signal to indicate either that the cassette is not present, or that the chamber is not closed, or both;
- wherein a cassette is installed in the chamber;
- and the sensor comprises a reflective member mounted on the cassette, a photocell mounted on the closure and an optical transmitter mounted in the chamber for directing a beam to the reflective member and from the reflective member to the photocell.
4 more elements
Apparatus for using light-sensitive web material, comprising:
- a chamber in the apparatus, for receiving a cassette of the material;
- a light-tight closure for the chamber;
- only one sensor, actuated by cooperation of both the closure and a cassette upon closing of the closure, for sensing both that the cassette is present in the chamber and that the chamber is closed by the closure and for producing a signal;
- and
- an indicator responsive to the signal to indicate either that the cassette is not present, or that the chamber is not closed, or both:
- wherein a cassette is installed in the chamber;
- and the sensor comprises a reflective member mounted on the cassette and an optical transmitter/receiver mounted on the closure for directing a beam to the reflective member and for receiving a reflected beam.
4 more elements
Apparatus for using light-sensitive web material, comprising:
- a chamber in the apparatus, for receiving a cassette of the material;
- a light-tight closure for the chamber;
- only one sensor, actuated by cooperation of both the closure and a cassette upon closing of the closure, for sensing both that the cassette is present in the chamber and that the chamber is closed by the closure and for producing a signal;
- and
- an indicator responsive to the signal to indicate either that the cassette is not present, or that the chamber is not closed, or both;
- wherein a cassette is installed in the chamber, the cassette having a single, off-center exterior feature sensed by the sensor when the cassette is installed, the cassette containing web material having a desired characteristic, and the chamber is closed;
- and
- wherein the exterior feature is optically reflective.
5 more elements
Dependencies are inferred from the claim text.