Xerox 8825 Service Manual page 55

Linearity of Lines
Linearity of lines refers to the straightness of the horizontal, vertical and diagonal lines.
Use a wide roll of media and run test pattern
[9-55-7]. Measure the straightness of a 50 block length in all three directions.
SPECIFICATION:
1 mm or less
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.
Figure 2 Use a wide roll 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
Figure 2 Test Pattern [9-55-7]
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
Print Quality
01/02
Print Quality Specifications
8825/8830 Printer 3-7