Method for reducing print distortion of ink drop writing apparat

Details Method for reducing print distortion of ink drop writing apparat Method for reducing print distortion of ink drop writing apparat

1981-12-18

1984-02-07

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, G01D 900

Patent

active

044306563

ABSTRACT:
A method and apparatus for writing information on a writing medium with ink drops which are sequentially generated, selectively charged in accordance with the information, and directed toward the writing medium so as to impinge thereon in column form for representing the information as a continuing mark formed by a sequence of charged ink drops. A predetermined number of uncharged dummy drops is utilized for each column, and a single uncharged dummy drop is inserted only at selected locations and in a predetermined order with respect to the drop portion of the column for eliminating merging of adjacent charged ink drops when a uncharged dummy drop is inserted therebetween. An insertion location for inserting an uncharged dummy drop is initially determined between the first and last two adjacent charged ink drops, respectively, of each sequence of charged ink drops along the column and the sequentially generated ink drops are selectively charged so as to insert the uncharged dummy drops at the determined locations of the column.

REFERENCES:
patent: 3562757 (1971-02-01), Bischoff et al.
patent: 3833910 (1974-09-01), Chen
patent: 4086601 (1978-04-01), Fillmore et al.
patent: 4086602 (1978-04-01), Yamada

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