Sharp AR-280 Service Manual page 98

44 - 4 Purpose Setting
Function Used to set the target image (reference) density level in the developing bias voltage correction.
(Purpose) (for OPC drum type B)
Section Image process
(Photoconductor/Developping/Transfer/Cleaning)
Item Data
Operation/ 1. Enter the set value (38) with the 10-key.
Procedure
2. Press the [OK] key. (The value entered in procedure 1 is set.)
Set value: 38
Note It must be set to 38.
44 - 5 Purpose Setting
Function Used to set various parameters (main charger grid voltage, laser beam power, correction start developing bias
(Purpose) voltage) in developing bias correction.
(for OPC drum type B)
Section Image process
(Photoconductor/Developing/Transfer/Cleaning)
Item Operation
Operation/ 1. Select the parameter mode with [↑], [↓] keys.
Procedure
2. Enter the parameter with the 10-key.
3. Press the [OK] key. (The value entered in procedure 2 is set.)
GRID BIAS VOL:
DEVE BIAS VOL : Reference developing bias voltage level in patch forming (210) (Set value)
LASER DUTY:
Note Be sure to set to the specified value. If not, the print image density may be disturbed.
44 - 9 Purpose Operation data output/Check (Display/Print)
Function Used to check the data on the result of the image forming section correction (process correction) (the corrected
(Purpose) main charger grid voltage in each print mode, developing bias voltage, the laser power, etc.)
(This simulation allows to check whether the correction is executed properly or not.)
Section Image process
(Photoconductor/Developping/Transfer/Cleaning)
Item Data
Reference charging voltage level in patch forming (380) (Set value)
Laser duty level in patch forming (255)
8 – 53
Adjust/Setting data
Operation data (Machine condition)
AR-405
1/21/1999