Patent ID: 7457006
Filing Date: 2008-11-25
Classification: H04N

Abstract:
1. An apparatus for recording images on sheets, comprising: a light-transmissive platen, defining a top surface and a bottom surface; a carriage disposed below the platen and movable parallel to the bottom surface of the platen, the carriage having disposed thereon a first imaging device, and a member defining a first calibration surface; a member defining a second calibration surface, disposed adjacent the top surface of the platen; a second imaging device disposed above the platen; a document handler for moving an image-bearing sheet in a process direction over the platen for reading by at least one of the first imaging device and the second imaging device; the carriage being movable to cause the second imaging device to read the first calibration surface; and the member defining the first calibration surface and the member defining the second calibration surface being disposed whereby, when the carriage is moving, the first imaging device reads from the second calibration surface, and then the second imaging device reads from the first calibration surface.