Ricoh Pro C901 Technical Bulletin page 322

Reissued: 4-Aug-15
Model:
Aries-P1.5/C1.5
APPENDIX
Adjustments for further security
In order to achieve further security for toner scattering and development motor locking,
modify the relative parameters in the SP mode after carrying out "Procedures 1~3".
Table: Notices and side effects concerning SP modification
SP modification
A)
Increasing the
toner refresh
threshold
B)
Increasing the
Vtref lower
limit
C)
Decreasing
the target
development
gamma
The above SP modifications should be carried out only for machines installed
Important:
in an environment where the relative humidity is not too low.
See the following page for details on these SP modifications.
echnical
T
SP3-701-002~004
SP3-701-006~008
Default: 6.0
Modified: 9.4
SP3-004-005~008
Default: 1.4
Modified: 2.0
SP3-561-010~012
Default: 1.5
Modified: 1.3
ulletin
B
Date:
27-Jan-12
When NOT to
implement the SP
modification
-
Do NOT implement
this SP modification if
high quality is
demanded for color
(hue) reproduction as
this modification will
decrease image
density. (*Note)
-
PAGE: 6/7
No.:
RM077072d
Side effect
Toner yield will
decrease if average
image coverage ratio
is 4% or lower.
Image density will
decrease if the
ambient humidity is
low.