公开(公告)号：US3864692A

公开(公告)日：1975-02-04

申请号：US40100673

申请日：1973-09-26

Applicant: IBM

Inventor： MCDONNELL JAMES A ,  MCGUIRE ROBERT E ,  RADLINSKY RAYMOND

IPC: B41J2/075 ,  B41J2/09 ,  B41J2/095 ,  G06K15/10 ,  H04N1/034 ,  G01D15/18

CPC classification number: B41J2/09

Abstract: An ink jet printer in which ink droplets issuing from a source serially pass through an electrically energizable deflection field which is activated at regularly recurring intervals. Deflection of the drops occurs along different trajectories toward a recording medium because of the variable time each droplet is subjected to the energized deflection field. The droplets which are deflected have the same physical or electrical characteristics and are not given differing charges, for example, before entry into the deflection field. Both electrically chargeable droplets and magnetic droplets may be used as the marking fluid when directed according to time dependent deflection. Generally, the deflection field is of sufficient length to include simultaneously all droplets which will comprise a full character stroke on the recording medium and the deflection signal is a square wave selectively applied. However, deflection fields may be shortened and the applied signal may either increase or decrease with time during the energizing interval. In addition, apparatus may be included to produce deflection along either of two coordinate axes and means are disclosed to select droplets required for printing while discarding others during issuance of the droplets from the source at a fixed generation rate.

Abstract translation: 一种喷墨打印机，其中从源发出的墨滴串联地通过可定时重复的间隔激活的电可激励的偏转场。 由于每个液滴经受能量偏转场的时间可变，所以液滴的偏转发生在朝向记录介质的不同轨迹上。 被偏转的液滴具有相同的物理或电学特性，并且不具有不同的电荷，例如在进入偏转场之前。 当根据时间依赖性偏转指示时，可电荷充液的液滴和磁滴都可用作标记液。 通常，偏转场具有足够的长度以同时包括将在记录介质上包括全字符行程的所有液滴，并且偏转信号是选择性地施加的方波。 然而，可以缩短偏转场，并且施加的信号可以在通电间隔期间随时间增加或减小。 此外，可以包括装置以产生沿着两个坐标轴中的任一个的偏转，并且公开了用于在以固定的发生速率从源发出液滴的同时丢弃打印所需的液滴的装置。