Ink jet printer for selectively printing different resolutions

Details Ink jet printer for selectively printing different resolutions Ink jet printer for selectively printing different resolutions

1977-02-28

1978-06-27

Miller, Jr., George H.

Recorders

Record receiver deforming

346136, G01D 1518, G01D 1524

Patent

active

040978737

ABSTRACT:
An ink jet printer has a rotating drum supporting a medium to receive ink drops from ink jet nozzles arranged in first and second sets of multiple linear arrays about the circumference of the drum. Both the first set of arrays, which are equally angularly spaced from each other in the arc in which they are mounted, and the second set of arrays, which are equally angularly spaced from each other about the entire circumference of the drum, are moved axially simultaneously along the drum. By altering at least two of the velocity of the rotating drum, the transport velocity of the moving arrays, and the drop rate, facsimile resolutions can be printed by the second set of arrays. The printer also is capable of printing at a higher resolution than any of the facsimile resolutions through use of the first set of arrays. In either the higher resolution or any facsimile resolution, there is interlacing of the tracks produced by the drops from the selected nozzles. If only one of the nozzles of each of the second set of arrays is selected, any detected facsimile resolution can be printed whereas the use of a plurality of the nozzles in each array of the second set of arrays enables only one detected facsimile resolution to be printed.

REFERENCES:
patent: 3298030 (1967-01-01), Lewis et al.
patent: 4009332 (1977-02-01), Van Hook
patent: 4050075 (1977-09-01), Hertz et al.
patent: 4051538 (1977-09-01), Fox et al.

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