Acoustic drying system with matched exhaust flow

摘要

An inkjet printing system, comprising: one or more inkjet printheads for printing drops of ink onto a receiver medium, and an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads. The acoustic air impingement drying system includes: an airflow source providing a supply flow rate; an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium; an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber; a blower for pulling air through the exhaust air channel at an exhaust flow rate; and a blower controller that controls the supply flow rate and the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate.

主权项

1. An inkjet printing system, comprising:
one or more inkjet printheads, each having an array of ink nozzles for printing drops of ink onto a receiver medium; a receiver media transport system for moving the receiver medium past the inkjet printheads; and an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads, the acoustic air impingement drying system including:
an airflow source providing air at a supply flow rate;an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium, wherein the acoustic resonant chamber imparts acoustic energy to the air flowing through the acoustic resonant chamber;an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber;a blower for pulling air through the exhaust air channel at an exhaust flow rate; anda blower controller that controls the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate, and wherein the acoustic resonant chamber includes a plurality of closed-end resonant chambers.