Liquid ejection appartus
AssigneeSeiko Epson Corporation
InventorsKeiji Matsumoto, Kazunaga Suzuki, Hidenori Usuda
Life of this patent
Estimating the term…
Abstract
A printer has a replaceable cartridge (ink pack), a recording head, and a control section. The recording head ejects ink supplied by the cartridge through a nozzle. The control section detects the retaining amount of the ink in the cartridge and the environmental temperature in the proximity of the printer. Further, the control section sets a threshold value, with reference to which it is determined whether the cartridge needs be replaced by a unused cartridge, to a lower value as the detected environmental temperature becomes higher.
Claims9
A liquid ejection apparatus comprising:
- a replaceable liquid retaining body;
- a liquid ejection head that ejects a liquid supplied by the liquid retaining body through a nozzle;
- a retaining amount detecting section that detects a retaining amount of the liquid in the liquid retaining body;
- a temperature detecting section that detects an environmental temperature in the proximity of the liquid ejection apparatus;
- a threshold value setting section that sets a threshold value, in accordance with which it is determined whether the liquid retaining body needs be replaced by a unused liquid retaining body, such that the higher the temperature detected by the temperature detecting section, the lower the threshold value becomes;
- and
- a determining section that determines whether the retaining amount detected by the retaining amount detecting section has become less than or equal to the threshold value.
A liquid ejection apparatus comprising:
- a replaceable liquid retaining body;
- a liquid ejection head that ejects a liquid supplied by the liquid retaining body through a nozzle;
- a retaining amount detecting section that detects a retaining amount of the liquid in the liquid retaining body;
- an indication device;
- a control section that compares the retaining amount detected by the retaining amount detecting section with a predetermined threshold value and, when the retaining amount becomes less than or equal to the threshold value, the control section activates the indication device to urge replacement of the liquid retaining body;
- a temperature detecting section that detects the temperature in the proximity of the liquid ejection apparatus;
- and
- a threshold value setting section that sets the threshold value such that the higher the temperature detected by the temperature detecting section becomes, the lower the threshold value becomes.
Dependencies are inferred from the claim text.