AGFA DRYSTAR AXYS, Service Manual

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DD+DIS033.07E
Functional Description
DOCUMENT CONTROL NOTE:
The controlled version of this document resides on MedNet. Any printed copy of this document is uncontrolled.
3.1
Backside Printing Recognition
Films are inserted in the printer with the backing layer on top.
If a film is inserted with the backing layer upside down, the backing layer can
contaminate the thermal head, as it begins melting when the thermal head heats
it up.
Normally it is not possible to insert a film wrong. If a customer however re-inserts
a jammed film, the chance is 50% that he inserts it the right way. See NOTE next
page.
To prevent that a wrong inserted film contaminates the thermal head, the printer
prints a small rectangle on top of the film and checks when the film arrives at the
CDM, whether this small rectangle has Dmax.
In case the density is below a certain threshold, the film must have been inserted
wrong. The printer stops printing, informs the user of back-side printing, to check
the correct positioning of the film and to remove the film jam. Thus the thermal
head is only contaminated slightly, as the film is only printed a few cm on the
wrong side.
Diagnostic Area
Border
(O.D. between Dmin and Dmax;
Refer to Host Profile parameter "Border Density")
Black Rectangle for
Backside Printing Recognition
Film printed on the
Non-Emulsion side
("Backside").
Distance
TH - CDM
Backside printing
Remove film jam
536602dc.cdr
Figure 14: Backside printing recognition
Edition 1, Revision 1 DRYSTAR AXYS Chapter 2 / 13
06-2009 Type 5367/100
Agfa Company Confidential