Ink jet printing system with pen alignment and method

Details Ink jet printing system with pen alignment and method Ink jet printing system with pen alignment and method

1997-11-17

2000-08-29

Moses, Richard

Incremental printing of symbolic information

Ink jet

Controller

B41J 29393

Patent

active

061097225

ABSTRACT:
An apparatus and method of aligning different color print heads of an ink jet printer by printing a sequence of extended-area first alignment elements in a first color, then printing an overlaying sequence of extended-area second alignment elements in a second color. Each of the alignment elements includes an array of spaced apart printed lines. The first alignment elements are printed to nominal reference positions, and the second alignment elements are offset from the reference positions by differing amounts. The degree of overlap of the first and second color lines is readily visible, and the most thoroughly overlapped alignment element may be readily identified. The identity of this element may then be fed back to the printer to respond with electronic alignment measures.

REFERENCES:
patent: 4878063 (1989-10-01), Katerberg
patent: 5250956 (1993-10-01), Haselby et al.
patent: 5644344 (1997-07-01), Haselby
patent: 5796414 (1998-08-01), Sievert et al.
patent: 5847722 (1998-12-01), Hackleman
European Search Repor dated Mar. 10, 1999 for related European Patent Application 98309358,4-4304; filed Nov. 16, 1998.

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