LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

A liquid ejection head(1) includes a pressure chamber(12) communicating with an ejection port(13), an ejection element(15) which ejects the liquid from the port(13), and a circulation path for the liquid including the chamber(12). The path includes a supply channel(130) for supplying the liquid to t...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHII, Kazuya, KONDO, Soji, NABESHIMA, Naozumi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A liquid ejection head(1) includes a pressure chamber(12) communicating with an ejection port(13), an ejection element(15) which ejects the liquid from the port(13), and a circulation path for the liquid including the chamber(12). The path includes a supply channel(130) for supplying the liquid to the chamber(12), a collection channel(140) for collecting the liquid from the chamber(12), a circulation pump(500) which supplies the collected liquid to the supply channel(130), and a pressure adjustment unit(150) configured to adjust a pressure on the liquid to be supplied to the supply channel (130). A pressure P21 on the liquid supplied to the chamber(12) while the pump(500) is stopped, a pressure P22 on the liquid supplied to the chamber(12) while the pump(500) is driven, and a pressure loss ΔP from the adjustment unit(150) to the chamber(12) while the pump(500) is driven satisfy P22 > P21 and P22 - ΔP < 0.