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DD+DIS150.05E
Repair and Service
Adjustments and Calibrations
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3.2.1
Basic Rules for the TH Cleaning Procedure
•
The correct cleaning material:
o
Wet
cleaning:
Use a lint free cloth lightly moistened with isopropyl – alcohol or a
cleaning issue.
For the isopropyl – alcohol: Less water in the alcohol is better.
Water can damage the thermal head. We recommend using a 90%
isopropyl – alcohol.
o
Dry cleaning: Use the blue side of an ink eraser.
•
The cleaning actions:
o
Wet cleaning: The last cleaning action must be carried out in one way!
o
Dry
cleaning:
Dismount the thermal head before dry cleaning.
Make a linear cleaning movement, parallel to the resistor line.
•
General: Do not push on the IC cover of the thermal head during cleaning.
536410cd.cdr
TH resistor line
TH top view
linear cleaning movement
parallel to TH resistor line
Ink eraser
e.g.
Pelican
type BR40
TH cross section
Blue side
Figure 21: Usage of ink eraser for TH cleaning
IMPORTANT:
Instruct the customer, not to fill the input tray with dropped films or films coming from
jam clearances:
•
These re-inserted films can be contaminated with dust and fingerprints which
can result in image artifacts or a defective thermal head.
•
If the film is inserted the wrong way, the thermal head gets heavily
contaminated, what makes a service intervention necessary.
Edition 1, Revision 1
DRYSTAR 5302
Chapter 3.6 / 34
05-2009 Type
5366/100
Agfa Company Confidential