Ricoh Pro C901 Technical Bulletin page 197

T B
echnical ulletin
PAGE: 2/4
Model: Date: No.:
Aries-P1.5/C1.5 11-Jul-11 RM077041
SYMPTOM
Printed images could appear as if "scratched" as shown in the photo below when feeding
highly stiff paper stocks.
Leading Edge
Feed Direction
CAUSE
Feeding stiff & thick paper causes the paper to lift up the Guide Plate as the paper enters
the PTR nip. Due to the small gap between the tip of the Guide Plate and the ITB, the
lifted Guide Plate contacts the ITB and brushes the toner, resulting in a "scratched" image.
SOLUTION
Replace with the modified Guide Plate (ITB GUIDE PLATE TYPE AX, p/n M0776514) if
the symptom described is observed when feeding stiff & thick paper stocks.
The modified Guide Plate is designed with a shorter tip to secure wider gap between the
Guide Plate and the ITB, which prevents the Guide Plate from lifting up and contacting the
ITB even when feeding thick paper stocks.
See the appendix for details.
NOTES ON THE POSSIBLE TRADE-OFF
With the modified Guide Plate, the stability when entering the nip is reduced as the paper
is hardly guided (by pressing in downward direction) in comparison to the original Guide
Plate. This could result in "toner scattering/diffusion" in an area of 10mm in width at the
leading edge, especially with stiff and coated paper stocks as high surface smoothness
causes further instability when the paper enters the PTR nip.
NOTES ON STORING THE ORIGINAL GUIDE PLATE AFTER REPLACEMENT
If replacement with the modified Guide Plate results in the trade-off described above,
switch the guide plate back to the original Guide Plate.
DO NOT discard the original Guide Plate. Make sure the original Guide Plate is stored.