Tone reproducible ink jet printer

Details Tone reproducible ink jet printer Tone reproducible ink jet printer

1985-09-27

1987-06-16

Goldberg, E. A.

Recorders

Record receiver deforming

358298, G01D 1518

Patent

active

046739513

ABSTRACT:
There is disclosed an ink jet printer of Hertz type. An ink jet is continuously forced out from a nozzle and broken into minute droplets. The droplets are selectively charged by applying pulse voltage. A row of charged droplets is removed and a row of uncharged droplets proceeds to the record medium and forms a dot thereon. The pulse width is controlled in order to allow a number of droplets included in one row of droplets, so that the diameter of dot is altered. The ink jet printer is able to produce high degree of tones by alteration of number of uncharged droplets in combination of the dot pattern moduration method or the dither method.

REFERENCES:
patent: 3416153 (1968-12-01), Hertz et al.
patent: 3916421 (1975-10-01), Hertz
patent: 3947851 (1976-03-01), Chen et al.
patent: 3977007 (1976-08-01), Berry et al.
patent: 3992713 (1976-11-01), Carmichael et al.
patent: 4065773 (1977-12-01), Berry
patent: 4524364 (1985-06-01), Bain et al.
Ink Jet Color Graphics, Peter Duffield, pp. 248-250. Journal of Applied Photographic Engineering, vol. 5, No. 4, Fall, '79.
Ink Jet Color Printing Method, Mitsuo Tsuzuki and Touru Usubuchi, pp. 185-188, Proceedings of 14th Joint Conference on Image Technology, '83.

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