Ink cartridge, cartridge holding mechanism, and printing apparatus

1. An ink cartridge comprising:

a main body which stores ink;

a head part which is provided on the main body and has a plurality of nozzles for ejecting ink;

a first hole into which a needle for supplying ink to the main body is inserted, wherein the first hole has a tapered shape which narrows from an outer side toward an inner side of the main body;

a label in a film shape which is attached to an upper surface of the main body; and

a second hole which is provided at the label and overlaps the first hole in a plan view of the label,

wherein the second hole guides the needle to the first hole when the needle is inserted,

wherein the main body comprises a needle receiving member having elasticity and being fitted into a hole at the upper surface of the main body, and the first hole is provided in the needle receiving member.

2. The ink cartridge according to claim 1 , wherein an inner diameter of the second hole is smaller than an inner diameter of the first hole.

3. The ink cartridge according to claim 1 , wherein a lateral surface of the first hole has a tapered shape, and

an inner diameter of the lateral surface of the first hole decreases from the outer side toward the inner side of the main body.

4. The ink cartridge according to claim 1 , wherein the second hole guides the needle to the first hole by coming into contact with the needle when the needle is inserted.

5. The ink cartridge according to claim 4 , wherein an inner diameter of the second hole is larger than an outer diameter of a tip part of the needle.

6. The ink cartridge according to claim 1 , wherein the label comprises at least one of polyester, polyethylene, polypropylene, polystyrene, and vinyl chloride.

7. The ink cartridge according to claim 1 , comprising:

n first holes, n being an integer of 2 or more; and

n second holes corresponding to the n first holes,

wherein the main body has n ink chambers.

8. A cartridge holding mechanism comprising:

an ink cartridge;

a holding member which holds the ink cartridge;

a lid member which covers the ink cartridge held by the holding member; and

a hinge which connects the lid member and the holding member,

wherein the ink cartridge comprises:

a main body which stores ink;

a head part which is provided on the main body and has a plurality of nozzles for ejecting ink;

a first hole into which a needle for supplying ink to the main body is inserted, wherein the first hole has a tapered shape which narrows from an outer side toward an inner side of the main body;

a label in a film shape which is attached to the main body; and

a second hole which is provided at the label and overlaps the first hole in a plan view of the label, wherein the second hole guides the needle to the first hole when the needle is inserted,

wherein the lid member has the needle.

9. The cartridge holding mechanism according to claim 8 , wherein an outer diameter of a tip part of the needle is smaller than an inner diameter of the second hole.

10. The cartridge holding mechanism according to claim 8 , wherein a portion of the needle in a longitudinal direction has a tapered part of which an outer diameter gradually increases from a tip part of the needle toward the lid member,

the outer diameter of the tapered part is larger than an inner diameter of the second hole, and

with the lid member closed, the tapered part presses a peripheral portion of the second hole of the label.

11. The cartridge holding mechanism according to claim 8 , wherein the second hole guides the needle to the first hole by coming into contact with the needle when the lid member shifts from an opened state to a closed state.

12. A printing apparatus comprising:

the cartridge holding mechanism according to claim 8 ;

an ink tank; and

a tube which connects the ink tank and the needle.