HP Deskjet 320 Solutions Guide - Page 150

Measuring Print Skew

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Measuring Print Skew 1. If using the sheet feeder, load a stack of paper in the IN tray. 2. Print a page of information that should display a consistent Use paper with squareness that is within tolerance. left margin down the page. DJP601 3. Take measurements to determine the print skew on the 4. Use one of the following equations to determine the total page. print skew on the page: A. Measure the distance from the left edge of the paper - If A>B, use the equation (A-B)/C to the upper left corner of the printout. This is distance - If B>A, use the equation (B-A)/C "A" in the figure below. 5. Repeat steps 2, 3, and 4 on at least 20 pages. The B. Measure the distance from the left edge of the paper measurement should be within the print skew specification to the lower left corner of the pattern. This is distance on 19 out of 20 pages. "B" in the figure below. 6. Try the process again with a different type of paper. C. Measure the vertical distance between "A" and "B." 7. If the print skew is consistently out of tolerance, return the This is distance "C" in the figure below. printer for repair. A C B 2121655 6-26 Problem Resolution

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6-26
Problem Resolution
Measuring Print Skew
1.
If using the sheet feeder, load a stack of paper in the IN tray.
Use paper with squareness that is within tolerance.
2.
Print a page of information that should display a consistent
left margin down the page.
3.
Take measurements to determine the print skew on the
page.
A.
Measure the distance from the left edge of the paper
to the upper left corner of the printout. This is distance
“A” in the figure below.
B.
Measure the distance from the left edge of the paper
to the lower left corner of the pattern. This is distance
“B” in the figure below.
C.
Measure the vertical distance between “A” and “B.”
This is distance “C” in the figure below.
4.
Use one of the following equations to determine the total
print skew on the page:
–
If A>B, use the equation (A-B)/C
–
If B>A, use the equation (B-A)/C
5.
Repeat steps 2, 3, and 4 on at least 20 pages. The
measurement should be within the print skew specification
on 19 out of 20 pages.
6.
Try the process again with a different type of paper.
7.
If the print skew is consistently out of tolerance, return the
printer for repair.
A
C
B