Features Of Copy Density Adjustment; Copy Density Adjustment Procedure - Sharp AL-1000 Service Manual

AL-1000/1010

(4) Features of copy density adjustment

For the copy density adjustment, the image data shift function
provided in the image process LSI is used.
List of the adjustment modes
Auto Mode Brightness 1 step only
Brightness 5 steps. Adjustment of only
Manual Mode
the center brightness is made.
Brightness 5 steps. Adjustment of only
Photo Mode
the center brightness is made.
Manual T/S Brightness 5 steps. Adjustment of only
mode the center brightness is made.
T/S Auto
Brightness 1 step only
mode

(5) Copy density adjustment procedure

Use SIM 46-01 to set the copy density for each copy mode.
For selection of modes, use the copy mode select key.
A. Test chart (UKOG-0162FCZZ) setting
1) Place the test chart so that its edge is aligned with the A4
(Letter) reference line on the document table. Then place a
B4 (14" × 8 1/2") white paper on the test chart and close the
document cover.
White paper
Test chart
B. Perform the adjustment in each mode.
(1) Execute SIM 46-1.
(2) Select the mode to be adjusted with the exposure mode
select key. Set the exposure level to 3 for all adjustment.
(Except for the auto mode.)
(1) (2)
Adjustment Exposure mode
mode display lamp
Auto mode Auto lamp ON
Manual
Manual lamp ON
mode
Photo mode Photo lamp ON
Manual
Manual T/S
lamp/Photo lamp
mode
ON
Auto T/S Auto lamp/Photo
mode lamp ON
(3) Make a copy.
Check the adjustment level (shown in the above table) of the
exposure test chart (Sharp Gray Scale).
Sharp Gray Scale adjustment level
1
Non toner
save mode
Not copied.
1
Toner save
mode
Not copied.
(When too bright): Decrease the value displayed on the
copy quantity display.
(When too dark): Increase the value displayed on the copy
quantity display.
* The value can be set in the range of 1 — 99.
9-9
(1) Mode select key/display
lamp
(2) Exposure level select
key/display lamp
Ex-
Sharp gray chart
posure
adjustment level
level
"3" is slightly
—
copied.
"3" is slightly
3
copied.
"3" is slightly
3
copied.
"4" is slightly
3
copied.
"4" is slightly
3
copied.
2 3 4 5 6 7 8 9 10
Slightly copied.
2 3 4 5 6 7 8 9 10
Slightly copied.
W
W