Liquid supplying device and liquid ejecting apparatus

A liquid supplying device comprising:

• a liquid supplying flow path through which a liquid is supplied from an upstream side as a liquid supplying source side toward a downstream side on which the liquid is consumed;
• a pump that is driven for a pumping operation in accordance with displacement of a displacement member constituting at least a part of an inner wall of a pump chamber as a part of the liquid supplying flow path for changing the volume of the pump chamber;
• and
• a liquid remaining amount detecting unit that detects the remaining amount of the liquid of the liquid supplying source,
• wherein the liquid supplying source is configured such that the volume of a liquid housing part as a closed space housing the liquid changes in accordance with the remaining amount of the liquid, and
• wherein the liquid remaining amount detecting unit detects the remaining amount of the liquid inside the liquid housing part based on the drive load of the pump for a case where the pump is driven for a suction operation in which the pump sucks the liquid into the pump chamber by displacing the displacement member in the direction in which the volume of the pump chamber increases.

A liquid supplying device comprising:

• a liquid supplying flow path through which a liquid is supplied from an upstream side as a liquid supplying source side toward a downstream side on which the liquid is consumed;
• a pump that is disposed in a position located in the middle of the liquid supplying flow path and is driven for a pumping operation in accordance with rotation of a transmission member, which separates the liquid sucked from the upstream side and transmits the liquid to the downstream side, within the liquid supplying flow path;
• and
• a liquid remaining amount detecting unit that detects the remaining amount of the liquid of the liquid supplying source,
• wherein the liquid supplying source is configured such that the volume of a liquid housing part as a closed space housing the liquid changes in accordance with the remaining amount of the liquid, and
• wherein the liquid remaining amount detecting unit detects the remaining amount of the liquid inside the liquid housing part based on the drive load of the pump for a case where the pump is driven for a pumping operation.