Inkjet printing apparatus and control method of the inkjet printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakashi Abe, Toshiaki Tokisawa, Kyoshiro Okude, Tsuyoshi Saeki, Ryoma Arai
Life of this patent
Estimating the term…
Abstract
According to an aspect, an inkjet printing apparatus includes a supply pump provided in a supply flow path for supplying ink from a tank to a print head, a first flow path connecting the first position upstream of the supply pump in the supply flow path and the second position downstream of the supply pump in the supply flow path, a second flow path connecting the tank and the third position downstream of the supply pump in the supply flow path, and an open/close valve provided in the second flow path and capable of opening and closing the second flow path.
Claims11
An inkjet printing apparatus comprising:
- a print head comprising an ejection opening for ink;
- a tank storing the ink to be supplied to the print head;
- a supply flow path for supplying the ink from the tank to the print head;
- a supply pump provided in the supply flow path and supplying the ink from the tank to the print head;
- a first branch flow path connecting a first position upstream of the supply pump in the supply flow path and a second position downstream of the supply pump in the supply flow path so as to allow the ink to flow from the second position to the first position;
- a second branch flow path connecting the tank and a third position downstream of the second position in the supply flow path;
- and
- an open/close valve provided in the second branch flow path and capable of opening and closing the second branch flow path.
A control method of an inkjet printing apparatus, the inkjet printing apparatus comprising:
- a print head comprising an ejection opening for ink;
- a tank storing the ink to be supplied to the print head;
- a supply flow path for supplying the ink from the tank to the print head;
- a supply pump provided in the supply flow path and supplying the ink from the tank to the print head;
- a first branch flow path connecting a first position upstream of the supply pump in the supply flow path and a second position downstream of the supply pump in the supply flow path so as to allow the ink to flow from the second position to the first position;
- a second branch flow path connecting the tank and a third position downstream of the second position in the supply flow path;
- and
- an open/close valve provided in the second branch flow path and capable of opening and closing the second branch flow path,
- the method comprising a step of filling the first branch flow path with the ink by driving of the supply pump and repeating an open/close operation of the open/close valve.
Dependencies are inferred from the claim text.