Image alignment procedure
AssigneeXerox Corporation
InventorsAbu Saeed Islam, Rakesh Suresh Kulkarni, Jack Elliot
Life of this patent
Estimating the term…
Abstract
This is an alignment system where precise alignment of a reproducible image is obtained with respect to the paper. An imaged paper to be reproduced is placed on a light table having a right angle fitting or marking. The paper is placed on top of the light table and is aligned with this right angle marking. A transparent platen with marked scales is placed over the imaged paper and also aligned with the right angle fitting. The scales are placed over the corners of the image and image corner location readings are taken from the scales. These readings are then entered and fixed into a marking system such as an electrophotographic printer for reproduction of copies from the aligned and fixed original image.
Claims10
A paper reproducible image alignment assembly comprising:
- a light table with a right angle fitting on a table top portion forming a right angle location positioned in at least one corner section of said light table, and a light transparency portion positioned at said table top portion, the right angle fitting being configured to receive and align a paper sheet placed at the right angle location;
- and
- a transparent platen configured to be positioned above said right angle location and said paper sheet, the transparent platen comprising 5 to 6 independent marked scales each having horizontal and vertical intersecting lines that form respective grid systems, the 5-6 independent marked scales being positioned on said transparent platen such that the transparent platen has completely blank spacing between all of the independent marked scales,
- wherein said independent marked scales are configured to facilitate determining location measurements of at least three positions of an image on said paper sheet relative to at least three of the 5-6 independent marked scales, the location measurements corresponding to marking system input parameters upon which an alignment of a reproduction of the image is based.
A process for aligning a reproducible image on a paper sheet, said process comprising:
- providing a light table with a right angle fitting on a transparent table top portion;
- providing a transparent platen configured to be positioned above said right angle location and said paper sheet, the transparent platen comprising 5 to 6 independent marked scales each having horizontal and vertical intersecting lines that form respective grid systems, the 5-6 independent marked scales being positioned such that the transparent platen has completely blank spacing between all of the independent marked scales;
- aligning a paper sheet having an image with said right angle, thereby fitting said paper sheet on said table top portion;
- placing said transparent platen over said paper sheet;
- aligning said transparent platen with the right angle fitting;
- and
- determining location measurements of at least three positions of the image relative to at least three of the 5-6 independent marked scales, the location measurements corresponding to marking system input parameters upon which an alignment of a reproduction of the image is based.
Dependencies are inferred from the claim text.