Airflow control via airflow zone in vacuum plenum of printing system, and related devices, systems, and methods

• Main Authors: LIU CHIH-HAO, HERRMANN DOUGLAS K, LEFEVRE JASON M, PRAHARAJ SEEMIT, MCCONVILLE PAUL J
• Format: Patent
• Language: Chinese; English
• Published: 04.10.2022
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

The invention provides a printing system. The printing system includes a printhead to eject a printing fluid to a deposition area. The print medium is pressed against the movable support surface via vacuum suction, and the movable support surface transports the print medium through the deposition area. The vacuum plenum includes a vacuum platen on which the movable support surface moves. The vacuum platen has a platen aperture that transmits vacuum suction from the vacuum plenum to the movable support surface. The airflow confinement mechanism forms a high impedance region in the vacuum platen that includes a subset of platen holes. The airflow impedance through the high impedance region is relatively higher than the airflow impedance through another subset of the platen holes, which is part of the low impedance region. A high impedance region may be located near the printhead to reduce airflow through uncovered platen holes near the printhead. 本发明提供了一种打印系统，该打印系统包括打印头以将打印流体喷射到沉积区域。打印介质经由真空抽吸被压靠在可移动支撑表面上，并且可移动