BestCode Next Series 8 Technical Manual October 2022 Page 208 of 290
Common Printhead Issues
Understanding Basic CIJ Technology
• Ink print drops are charged and deflected onto product in front of printhead.
• A charged ink print drop is attracted to the positive deflection plate to be pulled away from continuous ink stream.
No charge, no movement from stream of ink.
• The charge ink drop leaves the printhead and hits the product.
• A drop when hitting the surface will breakup into “many” splash drops.
• Splash drops are charged and are naturally attracted and collect to the positive deflection plate
Bearding
• Bearding is splash drops building up on positive
deflection plate.
• Bearding will eventually build a bridge of ink between the
Gutter (ground) and the positive deflection plate.
• Bearding will disrupt the printing process.
• Bearding will cause fuzzy print.
• Bearding will cause partial message printing.
• Bearding can occur in minutes/hours.
• Bearding can require the printhead to be cleaned hourly
(or very often).
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