Measurement And Adjustment; A. Mechanical Adjustment; B. Electrical Adjustment - Canon LBP-1000 Service Manual

VII. MEASUREMENT AND ADJUSTMENT

A. Mechanical Adjustment

1. Checking the nip width of the pressure roller
The fixing unit is not designed to allow adjustment of the pressure (nip width); however, the
incorrect nip width can cause fixing problems.
Follow the procedures below to check the nip width:
1) Make an all-black print of A4 size using an EP-32 cartridge, and take the print to the cus-
tomer's site.
2) Place the all-black print in the cassette of the printer, with the printed side facing down.
3) Select face-up delivery.
4) Press the test print switch.
5) Turn OFF the printer when the leading edge of the print emerges at the face-up tray. Open
the top cover and take out the print about 10 seconds later.
6) Measure the width of the glossy band across the paper and check that it meets the require-
ments as shown in Figure 4-7-1.
• Center(a): 6.0mm to 6.9mm
• Difference between right/left side and center (b-a, c-a): 0.5mm or less
• Difference between right side and left side (|b-c|): 0.5mm or less

B. Electrical Adjustment

• No electrical adjustment for this printer.
c
Feed-out direction
a
b
Figure 4-7-1
10mm
Center of
paper
10mm
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