Patent ID: 8336978

Claim:
A heating flow path unit which is arranged between a liquid supply source and a liquid ejecting head and heats liquid to be supplied to the side of the liquid ejecting head by a heater comprising: a plurality of liquid flow paths which are formed so as to be in parallel in a direction intersecting with a flowing direction of liquid in a unit base body and allow communication between a supply flow path from the side of the liquid supply source and an introduction flow path to the side of the liquid ejecting head; and an entrance-side sealing member which is arranged between a peripheral edge portion of an exit-side opening at the side of the supply flow path and a peripheral edge portion of a common entrance-side opening which is common to the liquid flow paths and connects the exit-side opening at the side of the supply flow path and the common entrance-side opening in a liquid-tight state, wherein the entrance-side sealing member has an inflow restriction portion which restricts flow of liquid on a portion corresponding to an individual entrance-side opening of a liquid flow path in which flow rate is relatively high among the liquid flow paths.