Drop-on-demand printhead

Details Drop-on-demand printhead Drop-on-demand printhead

1989-04-28

1990-07-10

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 75, 400126, G01D 1518, B41J 204, B41J 2145

Patent

active

049409964

ABSTRACT:
A drop-on-demand ink drop printhead is mounted fixed in a printer for selectively printing drops of ink in a print line. The printhead comprises a plurality of stacks of like print modules arranged in side-by-side relationship to form a number of laterally offset module layers. Each of the modules includes at least one group of uniformly laterally spaced ink ejectors, the groups in each layer being laterally spaced by the same amount such that drops from overlapping portions of two or more of the groups interleave to form a segment of the print line. Make-up ink and air supply ducting arrangements are provided for the modules in each stack.

REFERENCES:
patent: 3560641 (1971-02-01), Taylor
patent: 3946398 (1976-03-01), Kyser
patent: 4063254 (1977-12-01), Fox
patent: 4194210 (1980-03-01), Krause
patent: 4232324 (1980-11-01), Tsao
patent: 4357614 (1982-11-01), Tamai
patent: 4510509 (1985-04-01), Horike et al.
patent: 4528575 (1985-07-01), Matsuda et al.
IBM Technical Disclosure Bulletin (vol. 23, No. 7A), Dec. 1980, "Dual Resolution Ink Jet Drum Printer", W. E. Althauser, S. J. Fox, Rt. Ritchie, pp. 2700-2702.

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