Paper skew detection system

Details Paper skew detection system Paper skew detection system

2009-07-31

2011-12-13

Huffman, Julian (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

08075086

ABSTRACT:
A system and method that enables web paper skew detection by monitoring print head motor position. An inline full width array sensor actively tracks the alignment of the print heads across the print zone and actively moves the heads to maintain alignment. If the paper starts to skew across the print zone, a color misregistration error will be detected and the print units will be moves with respect to each other to maintain alignment. The absolute position of the print heads can be monitored by tracking the steps sent to each motor to maintain alignment.

REFERENCES:
patent: 4675696 (1987-06-01), Suzuki
patent: 7309118 (2007-12-01), Mizes et al.
patent: 7798587 (2010-09-01), Mizes et al.
patent: 7837290 (2010-11-01), Mizes et al.
U.S. Appl. No. 12/175,879, filed Jul. 18, 2008, by Howard A. Mizes et al, and entitled Continuous Web Printing System Alignment Method.
U.S. Appl. No. 12/372,294, filed Feb. 17, 2009, by Howard A. Mizes et al, and entitled System and Method for Cross-Process Control of Continuous Web Printing System.

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