Thick Paper Density Adjustment; Thin Paper Duplex Mode; Tcr Toner Supply - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
10.6.11

Thick Paper Density Adjustment

Functions • To fine-adjust density of printed images of each color for thick paper and OHP trans-
parencies.
Use • To change the density of the printed image for each color with thick paper and OHP
transparencies
Adjustment • The fine-adjustment can be made over a range of a total of five steps, two darker lev-
Range els and two lighter levels around the standard central level.
Adjustment Light color: Touch the Darker key.
Instructions Dark color: Touch the Lighter key.
Adjustment 1. Call the Service Mode to the screen.
2. Touch these keys in this order: "Imaging Process Adjustment" → "Thick Paper Den-
Procedure
sity Adjustment."
3. Touch the Lighter or Darker key for the desired color to correct the image density.
10.6.12

Thin Paper Duplex Mode

Functions
• Turn this function ON when thin paper (64 g/m
perature and high humidity in the 2-sided mode.
• It decreases the transfer output value so as to prevent a paper misfeed from occur-
ring.
Use • Use when a paper misfeed occurs when thin paper is used.
Setting/ • The default setting is OFF.
Procedure
10.6.13

TCR Toner Supply

Functions • To adjust the set T/C level by replenishing an auxiliary supply of toner when a low ID
occurs due to a lowered T/C after large numbers of copies have been made of origi-
nals having a high image density.
Use • When there is a drop in T/C.
Adjustment 1. Call the Service Mode to the screen.
2. Touch these keys in this order: "Imaging Process Adjustment" → "TCR Toner Sup-
Procedure
ply."
3. Select the color, for which supply of toner is to be replenished.
4. Pressing the Start key will let the machine detect the current toner density and; if the
density is lower than a reference value, a toner replenishing sequence and then a
developer agitation sequence are run.
5. These sequences are repeated up to a maximum of four times until the toner density
reaches the reference value. If the toner density is found to be higher than the refer-
ence value, only a developer agitation sequence is carried out.
ON
10. Service Mode
2
) is used in an ambience of high tem-
"OFF"
245