公开(公告)号：US3898671A

公开(公告)日：1975-08-05

申请号：US42402573

申请日：1973-12-12

Applicant: TELETYPE CORP

Inventor： BERRY JAMES M ,  HAUSER ANTHONY J ,  OLLENDICK GARY B

IPC: B41J2/115 ,  G06K15/10 ,  G01D15/18

CPC classification number: B41J2/115

Abstract: An ink jet printing device wherein conductive ink, under pressure is emitted from a nozzle and breaks into droplets in the vicinity of a charging electrode such that the charge on each droplet is determined by the voltage on the charging electrode at the instant that the droplet separates from the solid stream of ink issuing from the nozzle. A mask or drain catcher is provided for blocking and catching uncharged droplets of ink, and an electrostatic field is provided for deflecting charged droplets out of a path impinging on the drain catcher and into a path impinging on a record medium for printing thereon. A vibratory transducer is connected to the nozzle structure and imparts undulations at a fixed, droplet-forming frequency to the ink issuing from the nozzle so as to induce the stream of ink to break into droplets of uniform size and spacing, at the applied droplet-forming frequency. A data signal source is connected to the charging electrode, and the phasing between the data signal and the droplet-forming signal is randomly varied to obviate distortions due to frequent, regular, or periodic formation or separation of droplets during transitions of the voltage of the charging signals.

Abstract translation: 一种喷墨打印装置，其中在压力下的导电油墨从喷嘴发射并在充电电极附近分解成液滴，使得每个液滴上的电荷由液滴分离时刻的充电电极上的电压确定 从喷嘴发出的固体墨水流。 提供掩模或排水捕集器用于阻挡和捕获不带电的油墨液滴，并且提供静电场用于使带电液滴偏离冲击在排水捕集器上的路径，并进入撞击在记录介质上以在其上打印的路径。 振动传感器连接到喷嘴结构，并以固定的液滴形成频率将起伏作用于从喷嘴发出的油墨，以便在施加的液滴形成时引起油墨流分散成均匀尺寸和间距的液滴， 形成频率。 数据信号源连接到充电电极，数据信号和液滴形成信号之间的相位随机变化，以避免由于在电压转换期间液滴的频繁，规则或周期性的形成或分离而产生的失真 充电信号。