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US 10,864,722 B2Granted
Liquid discharge apparatus
AssigneeRicoh Company, Ltd.
InventorsRyuuta Katoh, Norimasa Sohgawa, Hiroki Takahashi
Life of this patent
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Abstract
A liquid discharge apparatus includes a liquid discharge head and a pattern printer. The liquid discharge head includes a plurality of nozzles to discharge liquid. The pattern printer drives the liquid discharge head to print a plurality of adjacent rectangular patterns under different drive conditions. The adjacent rectangular patterns are a reference pattern and an adjustment pattern.
Claims20
A liquid discharge apparatus, comprising:
- a liquid discharge head including a plurality of nozzles to discharge liquid;
- a pattern printer to drive the liquid discharge head to print a plurality of adjacent rectangular patterns under different drive conditions, the adjacent rectangular patterns being a reference pattern and an adjustment pattern;
- a plurality of correction tables for multiplying a drive waveform to be given to the liquid discharge head by a magnification;
- and
- a selector to select a correction table to be used from among the plurality of correction tables.
2 more elements
A liquid discharge apparatus, comprising:
- a liquid discharge head including a plurality of nozzles to discharge liquid;
- a pattern printer to drive the liquid discharge head to print a plurality of adjacent rectangular patterns under different drive conditions, the adjacent rectangular patterns being a reference pattern and an adjustment pattern;
- a plurality of correction tables for multiplying a drive waveform to be given to the liquid discharge head by a magnification;
- and
- a selector to select a correction table to be used from among the plurality of correction tables,
- wherein the rectangular patterns are printed with different numbers of the nozzles.
3 more elements
A liquid discharge apparatus, comprising:
- a liquid discharge head including a plurality of nozzles to discharge liquid;
- and
- a pattern printer to drive the liquid discharge head to print a plurality of adjacent rectangular patterns under different drive conditions, the adjacent rectangular patterns being a reference pattern and an adjustment pattern,
- wherein consecutive ones of the rectangular patterns are printed with at least two types of liquid droplets of different droplet sizes, the at least two types including a non-discharge type.
1 more element
Dependencies are inferred from the claim text.