초록 ▼

A liquid ejecting head ejects liquid by generating a bubble. The head includes a first liquid flow path for direct fluid communication between a first common liquid chamber and an ejection outlet, a second liquid flow path having a heat generating element for applying heat to the liquid to generate

A liquid ejecting head ejects liquid by generating a bubble. The head includes a first liquid flow path for direct fluid communication between a first common liquid chamber and an ejection outlet, a second liquid flow path having a heat generating element for applying heat to the liquid to generate a bubble in the liquid, and a supply path for supplying the liquid to above the heat generating element from an upstream side of the heat generating element in a direction along the heat generating element. A movable member is disposed between the first and second flow paths, faces the heat generating element, and is displaced to a side of the first liquid flow path because of pressure generated when the heat generating element is driven, and has a fulcrum and a free end located downstream of the fulcrum. A guide path is provided in which the liquid flows above the heat generating element in the second liquid flow path.

대표청구항 ▼

[ What is claimed is:] [1.]1. A liquid ejecting head for ejecting a liquid by generation of a bubble, comprising:a first liquid flow path for direct fluid communication with an ejection outlet and a liquid chamber provided at an upstream region upstream the said ejection outlet so that the liquid is

[ What is claimed is:] [1.]1. A liquid ejecting head for ejecting a liquid by generation of a bubble, comprising:a first liquid flow path for direct fluid communication with an ejection outlet and a liquid chamber provided at an upstream region upstream the said ejection outlet so that the liquid is received in said first liquid flow path from the upstream region;a second liquid flow path having a heat generating element for applying heat to the liquid to generate a bubble in the liquid for ejecting the liquid through the ejection outlet, and a liquid retaining region upstream of said heat generating element;a movable member disposed between said first and said second liquid flow paths and facing said heat generating element, displaced to a side of said first liquid flow path based on a pressure generated when said heat generating element is driven, and having a fulcrum and a free end that is provided downstream from said fulcrum; anda supply and guide path for removing the liquid in said liquid retaining region in said second liquid flow path separated from said first liquid flow path and supplying new liquid from said supply path upon removal of the liquid.