System and method for in-line sensing and measuring image on...

Details System and method for in-line sensing and measuring image on... System and method for in-line sensing and measuring image on...

2007-02-14

2009-12-08

Chen, Sophia S (Department: 2852)

Electrophotography

Diagnostics

By inspection of copied image

C347S117000, C399S301000

Reexamination Certificate

active

07630653

ABSTRACT:
A printing system and method is provided for adjusting image on paper (IOP) misregistration in a printing device. The method includes initiating marking of a substrate with a test pattern, the test pattern having at least one feature, and the marked substrate including at least two features including the at least one feature of the test pattern; sensing in a first sensing operation, as the substrate is transported in a process direction, a first feature of the marked substrate; sensing in a second sensing operation, as the substrate is transported in the process direction, a second feature of the marked substrate, wherein at least one of the first and second features is included in features of the test pattern; measuring a time differential between the sensing of the first and second features; and determining an IOP misregistration characteristic based on the measured time differential.

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