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04 Getting started
Preflow delays can be set to ensure continuous filaments at the beginning of each layer
and various starts and stops. This is due to the mechanical compression of the bioink in the
cartridge, resulting in a delay in flow. The preflow delay setting will pause printhead movement
after the air pressure valve is opened at the designated time. This allows the bioink to start
extruding before the printhead moves, resulting in more continuous filaments at faster printing
speeds.
The layer height must also be considered. A layer height that is shorter than the nozzle or
needle diameter will result in filaments that are wider in diameter, while a layer height that is
too large will result in poor filament attachment to the substrate. It might not be ideal to use
a layer height equal to the nozzle or needle diameter because the bioink could expand after
extrusion, or contract as it gels or self-assembles. This parameter is both bioink- and nozzle-
dependent and must be evaluated individually for each bioink.
For depositing droplets, please follow the instructions on the droplet printing menu.
To optimize cell viability, we recommend depositing cells in droplets using increasing pressure
to determine acceptable cell loss. Analyzing the resulting droplets after crosslinking and cell
culture will enable quantification of survival rate under the different pressures, nozzle/needle
diameters and shear forces. The optimal pressure can be used to determine the translation
rate and nozzle needed to achieve the target filament diameter.
Please see the G-code section (Section 5) for coding the Pneumatic Printhead and customizing
functionality.
Summary of Contents for 000000020356
Page 1: ...BIO X 10 mL Pneumatic Printhead User Manual ...
Page 2: ......
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Page 5: ...1 Package contents 01 ...
Page 7: ...3 Technical specifications 02 ...
Page 12: ...8 ...
Page 13: ...9 Safety information 03 ...
Page 15: ...11 Getting started 04 ...
Page 28: ...24 04 Getting started Figure 13 Removing the Pneumatic Printhead from the BIO X A B ...
Page 31: ...27 Relevant G code commands 05 ...
Page 34: ...30 ...
Page 35: ...31 Frequently asked questions 06 ...
Page 38: ...34 ...
Page 39: ...35 Maintenance 07 ...
Page 41: ...37 Appendix A Consumables needles and nozzles ...
Page 48: ...www cellink com ...