To enable an inkjet recording head to obtain excellent ejecting performance regardless of a type of a nozzle, the inkjet recording head having plural types of nozzles different in respective sizes of ejecting ink droplets arranged on a same substrate.
The plural types of nozzles comprise bubbling chambers 91, 92, 93 having ejecting energy generating elements for ejecting ink droplets to positions facing ejecting holes 71, 72, 73, and ejecting hole parts 61, 62, 63 communicating the ejecting holes with the bubbling chambers respectively. Ratios of opening areas S1b, S2b, S3b of the ejecting hole parts at the positions where the ejecting hole parts communicate with the bubbling chambers to opening areas S1a, S2a, S3a of the ejecting holes are configured so as to be larger for nozzles of smaller ejecting amounts respectively.
KANEKO MINEO
DOI TAKESHI
YAMANE TORU
TOMIZAWA KEIJI
TAKINO KANSUI
NABESHIMA NAOZUMI
MATSUMOTO MITSUHIRO
IDE SHUICHI
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阿部 和夫
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