Liquid discharge head and recording apparatus using the same
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United States of America Patent
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Feb 3, 2015
Issued Date -
N/A
app pub date -
Feb 4, 2014
filing date -
Feb 7, 2013
priority date (Note) -
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Abstract
A liquid discharge head includes: a recording element substrate including a discharge port group for discharging liquid and a supply port for supplying the liquid to the discharge port group; a supporting member including a liquid chamber for storing the liquid therein, the supporting member being configured to support the recording element substrate; a flow path formed between the liquid chamber and the supply port and configured to allow the liquid to flow therethrough along a main surface of the recording element substrate on which the supply port opens; and a plurality of through holes communicating the liquid chamber with the flow path. A sum of opening areas of the plurality of through holes per unit area is greater in a region having relatively high temperature than that in a region having relatively low temperature in an in-plane direction of the main surface of the recording element substrate.
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