As the continuous ink-jet (CIJ) printing industry evolves, KNF remains a driving force behind the change from yesterday’s peristaltic and gear driven pumps, to today’s more efficient diaphragm pumps. In fact, KNF is well positioned to serve this industry, thanks to our CIJ applications knowledge and selection of readily-optimized liquid and gas handling diaphragm pumps.
Diaphragm pumps overcome common problems inherent with the use of peristaltic and gear pumps in CIJ applications. Peristaltic pumps have short tube life leading to maintenance issues or messy clean-up, while gear pumps have issues including performance decay, shed particles, high cost, and they cannot run dry. In contrast, our diaphragm pumps provide a greatly extended performance life, lower cost operation, leak-tightness, robust chemical resistance, the ability to handle challenging inks, and our liquid pumps are self-priming and can run wet or dry. In addition, KNF diaphragm pumps can include features such as logic-controlled brushless DC motors, special electrical connections and mounting plates, and dampeners for applications sensitive to pulsation.
Typical functions that our pumps perform in drop-on-demand inkjet applications include:
- Bulk ink supply/replenish
- Ink degassing
- System vacuum and pressure
- Cleaning station
- Anti-siphon at head
- Gutter pump
- Chemistry make up
- Ink delivery
- Debris cleaning
- QC analysis
KNF is also proud to have contributed to the CIJ market’s successful evolution to now include industrial printers and decorators, mailing and labeling equipment, date/lot codes, bio-material dispensing, 3-D printers, printed electronics, and more.
View the complete Application Note for more information, including a list of KNF pumps for continuous ink-jet printing and a more complete list of KNF pump features and benefits for CIJ applications.