Patent ID: 8767220
Filing Date: 2014-07-01
Classification: H04N

Abstract:
1. A method of calibrating a printing system for positioning at least one printed image, said printing system comprising a first image bearing surface, said method comprising: a) forming a background pattern and at least three fiducials on said first image bearing surface, wherein said background pattern is larger than a first printed image, said background pattern comprises at least three patches and each of said at least three patches is in registered alignment with and partially overlaps each of at least three corners of said first printed image, and said at least three fiducials are within an area formed by said first printed image; b) transferring a portion of said first printed image to a second image bearing surface; c) measuring a first residual image on said first image bearing surface, wherein said first residual image is a portion of said background pattern and said at least three fiducials remaining on said first image bearing surface after said step of transferring; and, d) calculating at least one calibration parameter for said printing system based on said measuring of said first residual image.