Off-Register - Star WinType 800C Technical Manual

3. Colour off-register
This printer is shipped from the factory after it has undergone thorough colour off-register adjustments. However,
colour off-register may occur as a result of any of the following causes.
• Use of the printer over a long period of time.
• Replacement of the Thermal Head Unit, Upper Mechanical Unit or the Lower Mechanical Unit.
If this should occur, adjust using the following procedures.
3-1. Preparations
(1) Set the left side Pinch Roller Spring positions to F2 and B2. (Refer to section 3-4)
(2) Set the right side Pinch Roller Spring positions to F2 and B2. (Refer to section 3-4)
(3) If you have just finished cleaning the Platen Rollers and Pinch Rollers, print more than 10 sheets.
3-2. Checking colour off-register
Print 1 self test.
Are points 1 – 4 colour off-
register less than 0.2mm in the X
orY directions?
X Direction
Y Direction
Print 4 more self tests.
Are points 1 – 4 colour off-
register less than 0.25mm in the
X or Y directions for all five
tests?
It is within the tolerance range.
Further adjustment is not needed.
no
yes
no
yes
CHECK AND ADJUSTMENT
Adjustment is needed. Adjust according to the
type of colour off-register.
The colour off-register
occurred to parallelism.
(Refer to section 3-3)
The colour off-register
occurred to turn.
(Refer to section 3-4)
– 13 –
Magenta Yellow
or Cyan