Service Diagnosis; Improvement Of The Printing Quality - F+D ECO 200 User Manual

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Service Diagnosis

6. Service Diagnosis

6.1 Improvement of the Printing Quality

Unprinted stripes run over the printed image in printing direction
•
Dust particles are fixed onto the thermal print head and have to be removed with a spirit dampened
cloth.
•
Dot failure due to mechanical influence or electrostatic charging: the thermal print head has to be
changed. See maintenance notice: change thermal print head!
Entire printed image too weak
•
Check printing parameter and change if necessary (reduce speed, increase heating time)
•
Clean thermal print head with spirit dampened cloth when printer is turned off, do not use hard or sharp-
edged items!
•
In transfer printing mode: used paper - transfer ribbon - combination not suitable, apply combination as
preset by manufacturer or determine by tryout.
Inside the printed image small "islands" are not printed
•
Dust particles on the paper lift the print head at this point and prevent the printing.
•
A damaged printer roller leading to a lack of pressure at this point. The unit must be sent to F+D for
repair (see 2.9).
Printed image too weak on one side
•
Thermal print head has to be adjusted anew horizontally.
•
Adjust contact pressure spring of thermal print head.
Unprinted stripes run diagonally over the printed image
•
Reason is the formation of folds in the transfer ribbon
•
Check guidance of thermal ribbon
•
Adjust roller with thermal transfer ribbon laterally until ribbon is fold-free
•
Remove unwound ribbon and re-insert thermal transfer ribbon
•
If thermal transfer ribbon crinkles considerably, the heating time is set too high and thus also leads to
formation of wrinkles; reduce heating time.
•
In case winding- and re-winding device are no longer parallel, they have to be adjusted anew.
F+D
Feinwerk- und Drucktechnik GmbH
Kirchenstraße 38, D-69239 Neckarsteinach
Tel.: 06229 7000, Fax: 06229 70067
E-Mail: hotline@fuddruck.de, Internet: http://www.fuddruck.de
ECO 200
User Manual