Redundant full width array thermal ink jet printing for improved

Details Redundant full width array thermal ink jet printing for improved Redundant full width array thermal ink jet printing for improved

1994-09-30

1996-12-24

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 13, B41J 221, B41J 2938

Patent

active

055877303

ABSTRACT:
A thermal ink jet printer having redundant printing capability includes a primary printhead for printing ink drops of a first color and a secondary printhead for printing ink drops of the first color and/or other colors. The secondary printhead selectively prints according to either a first mode or a second mode. In the first mode, the secondary printhead supplements the primary printhead such that both printheads print ink drops of the first color. In the second mode, if the primary printhead fails, the secondary printhead prints ink drops of the first color in place of the primary printhead.

REFERENCES:
patent: 4833491 (1989-05-01), Rezanka
patent: 5057854 (1991-10-01), Pond et al.
patent: 5179418 (1993-01-01), Takamiya et al.
patent: 5398053 (1995-03-01), Hirosawa et al.

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