Patent ID: 8442302
Filing Date: 2013-05-14
Classification: B41J,G02B,G03F

Abstract:
1. A method of writing to or reading from a workpiece, the method including: using a stationary optical image device to form or collect relayed image information; relaying the image information along optics of at least one rotating arm between the stationary optical image device and a surface of the workpiece; repeatedly sweeping a curved stripe across the surface of the workpiece to write or read a contiguous image formed from overlapping images that are stitched together; and relaying the pattern information between the optical image device and the surface with a substantially constant azimuthal orientation, wherein the azimuthal orientation of the relayed image information is substantially constant when a set image at the optical image device maintains a constant angular relationship to relayed versions of the set image on the workpiece with no more than a 0.5 degree rotational variation in the angular relationship when the relayed versions are separated by 5 degrees sweep of the optical arm.