Lph Density Adjustment With Sp Codes - Ricoh Neptune-P1 Service Manual

2. Print Test Pattern 2 and check the results.
3. Repeat this procedure until the pattern at the joint is correct.
4. Do SP2952-12 for LPH 2-3
• Adjust the position of LPH 3 to LPH 2 (LPH 2 is the standard).
• If LPH 3 is higher than LPH 2, set a larger value.
• If LPH 3 is lower than LPH 2, set a smaller value.
5. Do this procedure again until the pattern at the joint is correct.
The hot roller and pressure roller are slightly wider at the ends to give them a spindle shape.
• The circumference at the ends of the rollers [C] is slightly larger than the circumference at the centers
[D].
• This arrangement ensures that there is always sufficient pressure on the paper between the roller ends.
This small difference in circumference also causes slightly affects the speed of paper feed (the paper speed
at the ends is slightly faster than at the center). Because the centers of the rollers more compressed than at
the center, this also increases the risk of slippage at the center with paper narrower than 420 mm.
• For operators who frequently use paper wider than 420 mm, do the sub scan adjustments for the LPH
joints with SP2952-11, -12.
• For operators who frequently use paper that is less than 420 mm wide, do the sub scan adjustments
for the LPH joints with SP2952-51, -52 after you input the values of SP 2952-11 and -12 from the
decal.

LPH Density Adjustment with SP Codes

1. Print Test Pattern 1.
2. Check the density of the patterns in LPH 1, LPH 2, and LPH 3.
If density is equal for all areas, no adjustment is necessary. If the density is not equal, do the next
procedure.
SP Adjustments
3
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