Liquid discharge head, liquid discharge apparatus, and manufacturing method
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United States of America Patent
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May 28, 2019
Grant Date -
Feb 1, 2018
app pub date -
Jul 27, 2017
filing date -
Jul 29, 2016
priority date (Note) -
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Abstract
A liquid discharge head includes a recording element substrate having first to fourth discharge port groups, each of which includes a plurality of discharge ports for discharging liquid, first flow path connecting a first liquid tank to the first discharge port group, a second flow path connecting a second liquid tank to the second discharge port group, and a third flow path connecting a third liquid tank to the third discharge port group and the fourth discharge port group, wherein a flow resistance in the first flow path is smaller than a flow resistance in the second flow path and larger than a flow resistance in the third flow path, and wherein a ratio of the flow resistance in the second flow path to the flow resistance in the third flow path is 4 or less.
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