FY –33VC Operation manual
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the Out tube; positive-pressure clean to fill the head with ink till ink streams out from nozzles. During the
process air is extruded completely from the head.
3、Moisturize print head surface
After extruding air from the head, cover the Cap on the Out tube. Positive-pressure clean again until ink
streams out of the nozzles, then scrub the head surface with a dry clean stick to form a protecting layer of ink
on the head surface. The ink on the surface will stream into the nozzles because of negative pressure.
Notes: Never scrub the head surface when head surface is dry, for that will orient air into the nozzles and
shape bubbles in the pipelines and affect the printing quality.
4、Test printing
Design some color blocks as 20x20cm with some image operating software, and set color luminance as
100%, 50% and 10%. Print the color blocks under test mode and check the print result. If the print result is
normal which means no ink-break and no ink spots on the mediums, the printer can work normally.
Figure 5-2 color blocks for test printing
5.2 Cleanness and maintenance of the print head
1. Ink replacing
Flush the print head with the original ink first, and then flush it again with new flush solution, which matchs
the new ink.
2. Print head cleaning
If low quality printing takes place, a positive-pressure cleaning is proper for the head. After positive pressure
cleaning, scrub the head surface with a dry clean stick to stop ink streaming from the nozzles. Be sure not to use a
stick with flush solution to scrub the head surface, otherwise, the flush solution will be siphoned into the nozzles.
3. Moisturize print head
Use wet keeping frame to moisturize the head if the printers is left unused. Put a clean non-woven fabric on
the sponge of wet keeping frame and drop some flush solution on it because the sponge usually has dust on it. If
no wet keeping frame, adhere a clean non-woven fabric with some flush solution on the print head and wrap it
with a fresh keeping polyester film.
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