Joints and connections – Interfitted members – Radially interposed shim or bushing
Reexamination Certificate
1999-05-21
2001-12-25
Browne, Lynne H. (Department: 3629)
Joints and connections
Interfitted members
Radially interposed shim or bushing
C242S578100, C403S372000, C403S373000, C403S374300, C403S110000, C403S368000, C279S048000, C279S136000
Reexamination Certificate
active
06332734
ABSTRACT:
FIELD OF THE INVENTION
The present invention is in the field of imaging systems. More particularly, the present invention provides a method and apparatus for mounting a supply roll of recording media to a support shaft in an imaging system.
BACKGROUND OF THE INVENTION
In many imaging systems, such as imagesetters or platesetters, a movable optical carriage is used to displace a laser system or other imaging source in a slow scan direction along a media support surface (e.g., internal drum) to expose a supply of recording media supported on the media support surface. Generally, the imaging source includes a beam deflection assembly, comprising a deflector element (e.g., a mirror) and a spin motor for rotating the deflector element. The beam deflection assembly deflects an imaging beam generated by a radiation source across the recording media. Such an imaging system is described, for example, in U.S. Pat. No. 5,598,739, assigned to Agfa Corporation, incorporated herein by reference.
As known in the art, imaging systems are commonly equipped with internal punches that are configured to punch a predetermined set of registration openings (e.g., holes, notches, etc.), into the recording media being imaged. By registering (i.e., aligning) the recorded image to the set of holes in the recording media, accurate registration throughout the prepress process can be achieved.
The recording media to be imaged by an imaging system is commonly supplied in web form. The recording media, which may comprise a photosensitive, radiation sensitive, thermally sensitive, or other type of imageable material, is typically wound around the core of a supply roll that is mounted on a rotatable support shaft. The rotatable support shaft may comprise a portion of a media supply cassette. During the loading of the recording media onto the media support surface, a section of the web of recording media is drawn from the supply roll and is positioned on the media support surface.
Currently available systems for mounting and positioning the supply roll on a support shaft are expensive to machine and produce, have a high part count, and are difficult to use. Further, it is often difficult to accurately, repeatedly, and/or adjustably position the supply roll in a desired location on the support shaft (e.g., relative to the punches of the imaging system) using known supply roll mounting techniques.
SUMMARY OF THE INVENTION
The present invention provides a method and apparatus for accurately positioning, and easily mounting, a supply roll of recording media to a support staff in an imaging system.
Generally, the present invention provides an apparatus for mounting a supply roll to a rotatable support shaft in an imaging system which includes: a first assembly for positioning a first end of the supply roll at a predetermined location on the support shaft; and a second assembly for frictionally coupling the support shaft to an interior surface of a supply core of the supply roll.
The present invention additionally provides a method for mounting a supply roll to a rotatable support shaft in an imaging system, the method including the steps of: positioning a first end of the supply roll at a predetermined location on the support shaft; and frictionally coupling the support shaft to an interior surface of a supply core of the supply roll.
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Agfa Corporation
Browne Lynne H.
Garcia Ernesto
King Joseph D.
Merecki John A.
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