Sharp AR-280 Service Manual page 100

44 - 15 Purpose Setting
Function Used to set the correction vlaues of various parameters (maincharger grid voltage, laser beam power, developing
(Purpose) bias voltage) in the image forming operation and image forming section correction for OPC drum type A.
Section Image process
(Photoconductor/Developing/Transfer/Cleaning)
Item Operation
Operation/ Used to set various parameters of image forming operation and image forming section correction operation for
Procedure drum type A.
1. Select the correction item with [↑], [↓] keys.
2. Enter the set value with the 10-key
3. Press the [OK] key. (The value entered in procedure 2 is set.)
DV BIAS:
GIRD BIAS:
LD POWER:
PROCON DB:
PROCON GB:
PROCON TARGET:
Be sure to set to the specified value.
Note Be sure to set to the specified value. If not, the print image density may be disturbed.
46
46 - 2 Purpose Adjustment
Function Used to adjust the copy density in the copy mode (binary/multi-value - auto, character and photo, photo mode).
(Purpose) (The overall print density in each mode (all of the specified density set for each density level (display value)) can
be adjusted in each mode.)
Section
Item Picture quality
Operation/ 1. Select the print mode with [↑], [↓] keys.
Procedure (The set value is highlighted.)
2. Enter the adjustment value with the 10-key.
3. Press the [OK] key or the PRINT button.
The value entered in procedure 2 is set.
When the PRINT key is pressed, copying is performed.
(Note) When a set value (density adjustment value in density level 3) in the left column of the table below is changed
Developing bias base voltage (Equivalent to SIM 8-1 for Drum type B.) (500)
Main charger grid voltage (Equivalent to SIM 8-2 for drum type B.) (475)
Laser power (Equivalent to SIM 61-2 for drum type B.) For AR-2X1/3X1/4XX/250/XX6 series,
set to "10" (default). For AR-230/250/285/330/335 series, set to "16."
Base developing bias voltage in toner image patch forming (in developing bias correction)
(Equivalent to SIM 44-5B) (500) (Correction value to SIM 44-5B)
Base main charger grid voltage (Equivalent to SIM 44-5A in drum type B) (500) (Correction
value to SIM 44-5A)
Target image (reference) density level in developing bias voltage correction (Equivalent to SIM
44-4 4 in drum type B) (58)
with this simulation, the set value (the overall density level set value) in the right column is changed
accordingly.
The parameters of the right and the left simulations and their adjustment items are the adjustment values in
the same print mode.
The result of adjustment by the simulation executed at the last is reflected in actual printing.
The print density is normally adjusted by SIM 46-2.
To customize the print density for the density level display value according to the user's request, use the
simulation in the right column. (Excluding auto mode/simulation 46-8.)
Density
8 – 55
AR-405
1/21/1999