Facsimile and static presentation processing – Static presentation processing – Plural marking means
Reexamination Certificate
2005-09-06
2005-09-06
Williams, Kimberly (Department: 2626)
Facsimile and static presentation processing
Static presentation processing
Plural marking means
C358S001400, C358S001900, C358S002100, C358S502000, C358S520000, C347S016000, C347S019000, C347S041000, C347S224000, C347S236000, C347S239000, C347S240000, C347S241000, C347S244000, C347S246000, C347S251000, C347S255000, C347S256000, C347S258000
Reexamination Certificate
active
06940618
ABSTRACT:
A linefeed calibration method for identifying media advancement errors utilizes plural test patterns, including both a base pattern and an overlay pattern that are printed overlying each other to form an interference pattern. A sensor detects overall alignment of the interference pattern. That overall alignment is compared to alignment of at least a second interference pattern to identify a linefeed advance error. The error is correlated to a position on a media advancement mechanism such as a roller. A processor then adjusts the media advancement mechanism to correct the identified media advancement error. Under-advance errors, over-advance errors and skew errors may be identified using the described method.
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Burleson Michael
Williams Kimberly
LandOfFree
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