Olivetti Artjet 12, User Manual, Page: 22 / 43

18 The Print Head
Print Head Care and Preservation
• Keep the print heads in their sealed package until you need to use them.
• Before inserting the print head, remember to remove the protecting sticker.
• Take care not to get any ink on your clothes, because the ink is indelible.
DO NOT attempt to recharge the print head with ink: this would
certainly damage
the
print head and the printer.
• Do not shake the print head. If print quality is unsatisfactory, perform the cleaning operations
described in the Cleaning the Print Head section.
Cleaning the Print Head
The print head is automatically cleaned at regular intervals when the printer is on. This operation
keeps the print head's nozzles unclogged, to guarantee proper ink flow.
The automatic nozzle cleaning operation may fail to assure a satisfactory print quality and the
two following cases may occur:
1. missing dots or whole lines (characters and graphs not fully printed out), due to the clogging
of some print head nozzles
2. presence of ink streaks that "dirty" the printe pages, due to the accumulation of small
quantities of dust inside the printer.
In the first case (which could occur occasionally after the printer has been inactive for a rather
long time), the problem can be solved with the
Print Head Nozzle Cleaning operation using the
Clean function of the Printer Care tab .
In the second case, manually cleaning the print head's nozzles and electrical contacts, and/
or the electrical contacts of the print-head carriage , can eliminate the problem.
See also Print Head Care and Preservation .