Specifications

AL-1551 ADJUSTMENTS 9-6
6) Check that the actual copy magnification ratio is within the specified
range. (100 ± 1.0%).
If it is not within the specified range, perform the following
procedures.
7) Execute SIM 48-1 to select the sub scanning direction copy
magnification ratio adjustment mode.
To select the adjustment mode, use the copy mode select key. (Photo
exposure lamp ON)
8) Enter the new set value of sub scanning direction copy magnification
ratio with the copy quantity set key, and press the COPY button.
Repeat procedures 1) - 8) until the sub scanning direction actual copy
magnification ratio in 100% copying is within the specified range.
When the set value is changed by 1, the magnification ration is changed
by 0.1%.
C. Lens unit attachment reference
Attach the lens unit so that the lens unit number on the lens adjustment
plate is aligned with the scribe line on the base plate.
Example: Lens unit number -2.8
Attach the lens unit at 2 scales in the paper exit direction
from the reference line.
Note:Never touch the other screws than the unit attachment screw.
The lens unit is supplied only in a whole unit.
D. Image position adjustment
There are following five kinds of image position adjustments, which are
made by laser control except for the image scan start position
adjustment. For the adjustments, SIM 50 - 01 and SIM 50 - 10 are used.
To select the adjustment mode with SIM 50 - 01, use the copy density
select key.
The relationship between the adjustment modes and the lighting lamps
are as shown in the table below.
To select the adjustment mode with SIM 50 - 10, use the copy mode
select key.
The relationship between the adjustment modes and the lighting lamps
are as shown in the table below.
Machine with the multi manual paper feed unit
Machine with the single manual paper feed unit
(1) Lead edge adjustment
1) Set a scale to the center of the paper lead edge guide as shown
below, and cover it with B4 or 8 1/2" x 14" paper.
2) Execute SIM 50 - 01
3) Set the print start position (AE lamp ON) (A), the lead edge void
amount (TEXT lamp ON) (B), and the scan start position (PHOTO
lamp ON) (C) to 0, and make a copy of a scale at 100%.
4) Measure the image loss amount (R mm) of the scale image.
Set C = 10 X R (mm). (Example: Set the value of C to 30.)
When the value of C is increased by 10, the image loss is decreased
by 1mm. (Default: 50)
5) Measure the distance (H mm) between the paper lead edge and the
image print start position.
Set A = 10 X H (mm). (Example: Set the value of A to 50.)
When the value of A is increased by 10, the image lead edge is
shifted to the paper lead edge by 1mm. (Default: 50)
No. Adjustment item Simulation
1 Print start position 50 - 01
2 Image lead edge void amount 50 - 01
3 Image scan start position 50 - 01
4 Image rear edge void amount 50 - 01
5 Center offset 50 - 10
Adjustment mode Lighting lamp
Print start position Auto (AE) lamp
Image lead edge void amount Manual (TEXT) lamp
Image scan start position Photo lamp
Image rear edge void amount Auto, Manual, Photo lamps
Lens unit number
( ) direction
Reference line (0)
(+) direction
Adjustment mode Lighting lamp
Print center offset (cassette) Auto, Cassette
Print center offset (manual feed) Auto, Manual
Document center offset Auto, Manual
Print center offset (cassette) Auto, Cassette
Print center offset (manual feed) Auto
Document center offset Auto, Manual