Oki C7200 Service Manual - Page 64
Color Misalignment Correction - okidata printer
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Service Guide - C7000 Series Chapter 2 Operation Page: 30 2.6 Color Misalignment Correction Each of the C7000 Series of printers is equipped with 4 ID units and LED heads, which can cause color misalignment. This color misalignment is automatically corrected as follows: (1) Color alignment to be corrected 1 Color misalignment in X-axis direction (Positional error caused by LED head) 2 Color misalignment in slanting direction (Positional error caused by LED head) 3 Color misalignment in Y-axis direction (Positional error caused by I/D unit and LED head) (2) Correcting A preset pattern to detect color misalignment is printed on the belt. The reflection sensor reads the printed pattern, each color's misalignment value is sensed and its correction value is determined. The correction value is used each color's (Cyan, Magenta and Yellow) writing timing in comparison with that of Black. Copyright 1999, Okidata, Division of OKI America, Inc. All rights reserved.