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US 4,975,714 AGranted
Focusing mechanism for linescan imaging
AssigneeAnacomp, Inc.
InventorDavid M. Rose
Life of this patent
Estimating the term…
Abstract
A continuous motion imaging system having a focusing mechanism for linescan imaging. Carriage apparatus connected to a continuous motion device moves a platen which holds the imaging media. A flexure connection between the carriage and the platen, coupled with a precise rail and bearing structure, provides for precision focus at the linescan position over the axis between the bearings.
Claims20
A focusing mechanism for linescan imaging apparatus comprising:
- imaging media;
- means for generating a signal representing data to be recorded on said imaging media;
- means for scanning said signal in a single line;
- means for periodically feeding said media in a first direction by a predetermined distance;
- platen means defining a surface to which said media is selectively held;
- imaging apparatus frame means;
- carriage means movably coupled to said imaging apparatus frame means;
- means for coupling said platen means to said carriage means so that said carriage means moves said platen means and media in a second direction normal to said first direction;
- means coupled to said carriage means for providing reciprocating linear motion thereof, said second direction motion being continuous during scanning;
- means for selectively holding said media to said platen means and releasing said media from said platen means;
- and
- means for maintaining said media in focus at the signal scanning line.
9 more elements
A focusing mechanism for linescan imaging apparatus comprising:
- imaging media;
- means for generating a signal representing data to be recorded on said imaging media;
- means for scanning said signal in a single line;
- means for periodically feeding said media in a first direction by a predetermined distance;
- platen means defining a surface to which said media is selectively held;
- carriage means;
- means for coupling said platen means to said carriage means so that said carriage means moves said platen and media in a second direction normal to said first direction, wherein said coupling means comprises a flexure connection which is rigid in one plane and flexible in a direction normal to said on plane;
- means coupled to said carriage means for providing reciprocating motion thereof, said second direction motion being continuous during scanning;
- means for selectively holding said media to said platen means and releasing said media from said platen means;
- and
- means for maintaining said media in focus at the signal scanning line.
8 more elements
A focusing mechanism for linescan imaging apparatus comprising:
- imaging media;
- means for generating a signal representing data to be recorded on said imaging media;
- means for scanning said signal in a single line;
- means for periodically feeding said media in a first direction by a predetermined distance;
- platen means defining a surface to which said media is selectively held;
- carriage means;
- means for coupling said platen means to said carriage means so that said carriage means moves said platen and media in a second direction normal to said first direction;
- means coupled to said carriage means for providing reciprocating motion thereof, said second direction motion being continuous during scanning;
- means for selectively holding said media to said platen means and releasing said media from said platen means thereof;
- and
- means for maintaining said media in focus at the signal scanning line, said means comprising precision bearings and rails configured to precisely define an axis between said bearings and thereby a focused signal scanning line location parallel to said axis o said media.
8 more elements
A focusing mechanism for linescan imaging apparatus comprising:
- imaging media;
- means for generating a signal representing data to be recorded on said imaging media;
- means for scanning said signal in a single line;
- means for periodically feeding said media in a first direction by a predetermined distance;
- platen means defining a surface to which said media is selectively held;
- carriage means;
- means for coupling said platen means to said carriage means so that said carriage means moves said platen and media in a second direction normal to said first direction;
- means coupled to said carriage means for providing reciprocating motion thereof, said second direction motion being continuous during scanning;
- means for selectively holding said media to said platen means and releasing said media from said platen means thereof;
- means for maintaining said media in focus at the signal scanning line;
- and
- means for setting up said bearings to ensure precise focus of said scanning line on said media, said setting up means comprising precision adjusters in two axes of motion for moving said bearings.
9 more elements
A method for focusing a linescan image in a single scanning line on imaging media, the imaging media being in juxtaposition with a platen which is coupled to a carriage for movement therewith, said method comprising the steps of:
- generating a signal representative of the data to be recorded on the imaging media;
- periodically feeding the media by a predetermined distance in a first direction;
- providing reciprocating motion of the carriage continuously during scanning in a second direction normal to the first direction;
- selectively holding the media against and releasing the media from the platen;
- and
- maintaining the media in focus at the scanning line.
3 more elements
Dependencies are inferred from the claim text.