Xerox N2125N - DocuPrint B/W Laser Printer, Service Manual

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02/2000
3-8 DocuPrint N2125
Resolution, Registration
Initial Issue Image Quality Repair Analysis Procedures
Resolution
Procedure
Refer to Figure 1 . Observe the three image areas on several System Controller Test Patterns.
Check the resolution of the images in each of the areas:
Arrow 1
The two pixel vertical, horizontal and diagonal lines should be clear and continuous. The diag-
onal lines might appear to be narrower than the others.
Arrow 2
The text paragraphs should be roughly equal in density.
Arrow 3
The half-tone patches adjacent to the solid blocks in the corners should be uniform in appear-
ance. The three checks (arrows 1, 2, & 3) are within specification.
Y
N
Go to
IQ RAP 18 Resolution.
The printed test patterns meet the Resolution specification. Go to the Registration (Side to
Side).
Figure 1 Resolution.
Registration (Side to Side)
Procedure
Measure the registration on two consecutive System Controller Test Patterns. Fold the paper in
half (side edge to side edge). Observe the fold line of the paper with reference to the cross
hairs of the target,
Figure 1 . The fold is /- 2.0 mm of the target cross hairs (each
line on the target is 1 mm).
Y
N
Go to
IQ RAP 15 Registration.
The test prints meet the side to side registration specification. Go to Registration (Lead Edge to
Trail Edge).
Figure 1 Registration (Side to Side).