Users Guide Viper Extreme
CHAPTER 3: Basics
28
AP-75330 Rev. 1.0 14/01/09
3.3 PERFECT MEDIA HANDLING
The Viper Extreme printer prints on transfer paper with water-based disperse dye inks. An annoying effect
of transfer paper when coming into contact with ink is expansion of the media.
Therefore, the Viper Extreme has been specially developed to avoid the media cockling to occur and to
minimize the print heads to touch the media when minimal media cockling occurs.
Notes
The transfer papers with a low g/m², the thinnest, are most sensitive to expanding. This expansion
results in media coming up from the print platform between the different pressure rollers.
3.3.1 Measurements to prevent media cockling
Prevent media cockling to avoid the print heads to touch the media (protect heads and print result) and to
avoid the cockling structure to become apparent in the print result.
Be sure to read and understand the safety warnings before handling the printer.
3.3.1.1
Unwinder / winder 100
The Unwinder / winder 100 system always provides an equal tension on the media when printing.
It is important that the Unwinder / winder 100 is perfectly lined out to prevent cockling. To line out the
Unwinder / winder 100, please refer to the users guide Handling Roll Media.
Print environment of transfer paper
Environmental
Recommended
working environment
Temperature: 19° - 26°
Humidity: 30% to 60%, without condensation
Notes
Please note that some inks require a humidity of more than 50%, other inks can be used at 30%
humidity. Please contact your ink supplier for optimum printing conditions.
3.3.1.2
Pre-heating of the transfer paper
The Viper Extreme printer is equipped with a pre-heater. (Range up to 70°C.)
Notes
We recommend you to set the pre-heater temperature at 50°C. This to be sure that the transfer paper
expands a little before reaching the pressure rollers.
3.3.1.3
Extra fans
The Viper Extreme is equipped with extra fans to keep the transfer paper flat on the print platform.
Notes
We recommend you to select HIGH in the vacuum menu. Only use LOW or MEDIUM when using
sheet media.
Summary of Contents for Viper Extreme
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