Ink tank and ink jet printing apparatus
An ink tank that enables to check whether a cover of an ink tank is normally bonded to the ink tank includes a first chamber having a supply port for supplying ink to a printing head that ejects ink, a second chamber having an external air introduction port capable of introducing external air, a partition wall configured to separate the first chamber and the second chamber, a communication path provided in the partition wall and configured to place the first chamber and the second chamber in communication with each other, a first cover member configured to cover an opening of the first chamber without extending over an opening of the second chamber, and a second cover member configured to cover the opening of the second chamber without extending over the opening of the first chamber.
1. An ink tank comprising:
a first chamber configured to contain ink, the first chamber having a supply port for supplying ink to a printing head that ejects ink and a first opening on a first side surface of the ink tank;
an injection port provided in the first chamber and configured to inject ink into an interior of the first chamber;
a tank cap configured to cover the injection port and to be opened to inject ink into the injection port;
a second chamber configured to contain air, the second chamber having an external air introduction port capable of introducing external air and a second opening on a second side surface of the ink tank, the second side surface being different from the first side surface;
a partition wall configured to separate the first chamber and the second chamber;
a communication path provided in the partition wall and configured to communicate the first chamber with the second chamber;
a first cover member configured to cover the first opening and not cover the second opening and configured as a sidewall of the first chamber; and
a second cover member configured to cover the second opening and not cover the first opening and configured as a sidewall of the second chamber.
2. The ink tank according to claim 1 , wherein the second side surface is opposite of the first side surface.
3. The ink tank according to claim 1 , wherein the first side surface is formed on a side of the ink tank, and the second side surface is formed on a bottom of the ink tank.
4. The ink tank according to claim 1 , wherein a step is formed between the first side surface and the second side surface.
5. The ink tank according to claim 1 , wherein the second chamber is formed above the first chamber.
6. The ink tank according to claim 1 , wherein the external air introduction port is formed on an upper surface of the second chamber.
7. The ink tank according to claim 1 , wherein the first chamber communicates with an atmosphere by the external air introduction port via the communication path and the second chamber.
8. The ink tank according to claim 1 , wherein the supply port is connected to a supply tube for supplying ink to the printing head.
9. The ink tank according to claim 1 , wherein the ink tank is provided on a front surface of an ink jet printing apparatus that ejects ink and prints an image.
10. An ink jet printing apparatus comprising:
a printing head configured to eject ink; and
an ink tank including
a first chamber configured to contain ink, the first chamber having a supply port for supplying ink to the printing head and a first opening on a first side surface of the ink tank,
an injection port provided in the first chamber and configured to inject ink into an interior of the first chamber,
a tank cap configured to cover the injection port and to be opened to inject ink into the injection port,
a second chamber configured to contain air, the second chamber having an external air introduction port capable of introducing external air and a second opening on a second side surface of the ink tank, the second side surface being different from the first side surface,
a partition wall configured to separate the first chamber and the second chamber,
a communication path provided in the partition wall and configured to communicate the first chamber with the second chamber,
a first cover member configured to cover the first opening and not cover the second opening and configured as a sidewall of the first chamber, and
a second cover member configured to cover the second opening and not cover the first opening and configured as a sidewall of the second chamber.