Liquid-droplet jetting apparatus having a serial auxiliary head
AssigneeBrother Kogyo Kabushiki Kaisha
InventorHiroto Sugahara
Life of this patent
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Abstract
An ink-jet printer has a line-type ink-jet head which has a nozzle row including a plurality of nozzles arranged in an array in a scanning direction; an auxiliary head which is movable in the scanning direction and which has a plurality of nozzles arranged in an array in the scanning direction, and a pitch at which the nozzles of the nozzle row are arranged in the ink-jet head and a pitch at which the nozzles are arranged in the auxiliary head are same. Accordingly, when jetting failure occurs concurrently at nozzles among the plurality of nozzles in the ink-jet head, it is possible to complement, at one time, the failed nozzles by the nozzles in the auxiliary head.
Claims11
A liquid droplet jetting apparatus for jetting liquid droplet comprising:
- a first liquid-droplet jetting head provided with a first nozzle row including a plurality of first nozzles arranged in a predetermined first direction;
- a second liquid-droplet jetting head provided with a plurality of second nozzle rows, each second nozzle row comprising a plurality of second nozzles arranged in the first direction, and which is shorter than the first nozzle row, wherein the second nozzle rows are arranged in a second direction intersecting the first direction;
- a driving mechanism which drives the second liquid-droplet head in the first direction;
- a position detector which detects a position of the second liquid-droplet head with respect to the first direction;
- and
- a movable body configured to be movable in the first direction, and which comprises a detector configured to detect a jetting state of the first nozzles,
- wherein the first nozzles of the first nozzle row are arranged at a first pitch and a second pitch at which the second nozzles of each of the second nozzle rows are arranged at a second pitch, and the first pitch and the second pitch are the same;
- and
- the moveable body and the second liquid-droplet jetting head are configured to be moved integrally in the first direction by a single drive motor.
Dependencies are inferred from the claim text.