Print Quality Specifications - Xerox 8830 Service Manual

Lead Edge Registration (A)
This is the degree to which the lead edge of a
print image is within a specified distance from
the lead edge of the media.
Use a wide roll of media and run 4 prints of test
pattern [9-55-7] and use the fourth print.
Measure the distance from the lead edge of the
media to the first horizontal line at the right side
of the print and the center of the print.
SPECIFICATION:
16.25+/-2.0 mm
Skew (B)
This is the degree to which media is fed at an
angle to the print image.
Use a wide roll of media and run test pattern
[9-55-7]. Measure the distance at B (both
places) 70 blocks apart.
SPECIFICATION:
+/- 0.5% or less
Linearity of Lines
Linearity of lines refers to the straightens of the
horizontal, vertical and diagonal lines.
Use a wide roll of media and run test pattern
[9-55-7]. Measure the straightens of a 50 block
length in all three directions.
SPECIFICATION:
1 mm or less

Print Quality Specifications

Side Edge Registration (C)
This is the degree to which the center of the
image of a print is within a specified distance
from the center of the media.
Use a wide roil of media and run test pattern
[9-55-7]. Fold the print in half. At the fold mark,
measure the distance between the fold line and
the center line of the image.
SPECIFICATION:
6 mm or less
Magnification (D1,D2)
Magnification refers to the rate at which an
original image is enlarged or reduced on a print.
The change in image length is either in the
media feed direction (vertical) or the side-to-side
direction (horizontal).
Measure the length of 50 blocks (D1) from side-
to-side (horizontal) and one block down from the
lead edge.
Measure the length of 60 blocks in the media
feed direction (vertical) and one block in from the
side.
SPECIFICATION:
Horizontal (D1)
812.8 mm+/-4.06 mm
Vertical (D2) 975.4 mm +/- 4.88 mm
Cut Accuracy
This is the dimension of variance from a true,
horizontal cut.
SPECIFICATION:
+/- 4 mm
1/98
3-6
Figure 2. Test Pattern [9-55-7]
8830