Please describe the application in a couple of sentences. Include the application field (bio, genetics, displays, microelectronics, …).
1. Diameter:
2. Velocity:
3. Satellites (smaller drops following main drop) acceptable? If yes, restrictions on size, straightness, speed?
1. Frequency range:
2. Max flow rate:
3. Time required for printing
4. Type of printing (on-the-fly or move-stop-print)
5. Other operational parameters
a. Is time for drying between dispensing at the same location required?
b. Is multiple layer printing necessary?
1. Dispensing area
a. Regular spots
b. Other features (lines, rectangles, …)
2. Placement accuracy
3. Is printing relative or absolute?
a. Are there alignment marks on the substrate?
b. Are there fixtures that the fluid will be printed on? What size?
4. Number of drops per spot
5. Spacing between spots / features
6. Number of locations to be printed
7. Number of runs (over the same locations)
a. Is there a certain thickness that needs to be achieved after drying?
8. Distance between the device and the substrate
1. Substrate material
2. Spacing between spots / features
1. Carrier/buffer for the fluid
2. Fluid viscosity
3. Any requirements for storage and handling (temperature, light exposure, contact with air)
4. Shelf life
5. Cleaning solutions
1. What will be used to actuate the PZT?
a. Does it have voltage limitations?
b. What driving waveforms does it produce?
2. Is pressure and vacuum available on the system?
3. Fluid has to be at the tip level otherwise drops are not formed. How is this going to be done:
a. Use low vacuum?
b. Place the fluid reservoir below the device tip?
4. Volume available in the reservoir:
a. What is the maximum volume available?
b. How much can be used for maintenance operations?
c. How is the reservoir loaded?
5. How many dispensers in the system?
6. If more than one which option is preferred:
a. Dispensers mounted individually?
b. All dispensers incorporated in a printhead?
c. What is the desired device to device spacing?
d. What is the desired placement accuracy?
7. Does the system have camera / LED for drop observation?
8. Does the system have aligning capability (print, survey and correct for printing errors)?
