CONTROLLING WAVEFORMS TO REDUCE NOZZLE CROSS-TALK

• Main Authors: FAGERQUIST RANDY L, BAUMER MICHAEL F, HSU CHANG-FANG
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2020
• 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

An inkjet printhead includes two groups of interleaved nozzles. First and second sets of drop-formation waveforms are associated with the groups of nozzles to selectively cause portions of a liquid jet to break off into drops. A timing delay device time-shifts the second-group waveforms relative to those associated with the first-group waveforms. A charging-electrode waveform having portions withfirst and second potentials is provided to a charging electrode. The waveform energies of the second-group waveforms is larger than the waveform energies of the corresponding first-group waveforms sothat printing drops break off from the liquid jets while the charging-electrode is at the first potential, and non-printing drops break off from the liquid jets while the charging-electrode is at thesecond potential. 喷墨印刷头包括两组交错的喷嘴。液滴形成波形的第一集合和液滴形成波形的第二集合与喷嘴组相关联，以选择性地使得液体射流的部分脱落成液滴。定时延迟设备相对于与第一组波形相关联的波形将第二组波形时移。具有带有第一和第二电势的部分的充电电极波形被提供到充电电极。第二组波形的波形能量大于对应的第一组波形的波形能量，使得当充电电极处于第一电势时印刷液滴从液体射流脱落，并且当充电电极处于第二电势时非印刷液滴从液体射流脱落。