Ink jet recording head

Details Ink jet recording head Ink jet recording head

1993-02-04

2000-04-11

Hartary, Joseph

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 47, B41J 2045

Patent

active

060480521

ABSTRACT:
In an ink recording head having at least four nozzle opening rows, each row having nozzle openings so as to extend straightly in a sheet forward direction, the nozzle opening rows are staggered by a single dot in the sheet forward direction in an order different from the physically arranged order. The maximum distance between nozzle opening rows to print vertically adjacent dots becomes smaller by L1 or L2 than at least the physical maximum distance L1+L3+L2, L1 or L2 being a distance between the outermost nozzle opening row and the inner nozzle opening row. As a result, the relative displacement in the vertical direction can be reduced by such distance L1 or L2 compared with a recording head in which nozzle opening rows are sequentially staggered in the auxiliary scanning direction in the physically arranged order.

REFERENCES:
patent: 4459601 (1984-07-01), Howkins
patent: 4475113 (1984-10-01), Lee
patent: 4564846 (1986-01-01), Siegal
patent: 4611219 (1986-09-01), Sugitani et al.
patent: 4680595 (1987-07-01), Cruz-Uribe et al.
patent: 4905017 (1990-02-01), Sugitani
patent: 5446485 (1995-08-01), Usui
Lee et al; Laminated Ink Jet Head; IBM Tech. Disc. B., V23, N7A, Dec. 1980, pp. 2955-57.
IBM Tech. Disc. Bulletin; Drop-on-Demand Nozzle Interlace pattern, V28, Ni, Jun. 1985, pp. 65-67.

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