Tape cartridge

1. A tape cartridge detachably installed in a tape printing apparatus having a cartridge installation portion on which the tape cartridge is installed, a tape feeding mechanism portion that feeds a printing tape from the installed tape cartridge and feeds an ink ribbon in synchronization with the feeding of the printing tape, a printing head portion that performs printing on the printing tape and is configured to be movable between a printing position and a retracting position, a head cover provided on the cartridge installation portion, and a convex portion that projects from an outside surface of the head cover and guides installation of the tape cartridge, the tape cartridge comprising:

the printing tape;

the ink ribbon;

a platen roller that receives power from the tape feeding mechanism portion and faces the printing head portion so that the printing tape and the ink ribbon are disposed between the platen roller and the printing head at the printing position;

a cartridge casing that accommodates the printing tape, the ink ribbon, and the platen roller;

an insertion opening that is provided on the cartridge casing and in which the head cover is inserted when the tape cartridge is installed on the cartridge installation portion; and

a facing portion that is provided on an opening peripheral wall portion of the insertion opening and receives the convex portion to restrict a displacement of the tape cartridge in the cartridge installation portion,

wherein:

the head cover includes three covering side walls having:

a first covering side wall covering a rear surface side of the printing head portion, and

two second covering side walls, respectively, extending from both outside ends of the first covering side wall,

the opening peripheral wall portion of the insertion opening includes three opening inside walls having:

a first opening inside wall corresponding to a first covering side wall, and

two second opening inside walls corresponding to the two second covering side walls,

the three opening inside walls are formed in shapes complementary to the three covering side walls when seen from an installation direction in which the tape cartridge is installed in the tape printing apparatus,

the facing portion is a concave portion,

the concave portion includes a concave-portion bottom wall surface, and

the concave-portion bottom wall surface includes a slant surface ascending in the installation direction.

2. The tape cartridge according to claim 1 , wherein

the concave portion relatively fits in the convex portion.

3. The tape cartridge according to claim 1 , wherein

the concave portion is provided on the first opening inside wall so as to correspond to the convex portion projecting from an outside surface of the first covering side wall extending in the same direction as the feeding direction of the printing tape.

4. The tape cartridge according to claim 1 , wherein

the concave portion is provided on each of the two second opening inside walls with respect to the convex portion projecting from each of outside surfaces of the two second covering side walls.

5. The tape cartridge according to claim 1 , wherein

the concave portion includes two concave-portion side wall surfaces, and

the tape cartridge is positioned by the two concave-portion side wall surfaces and the convex portion in a direction crossing a direction in which the convex portion projects.

6. The tape cartridge according to claim 1 , wherein

the concave portion corresponds to the convex portion extending from an installation base surface of the cartridge installation portion to a position close to an end position of a feeding path of the ink ribbon on a front side in the installation direction, and

the concave portion extends from an end surface of the three opening inside walls on the front side in the installation direction to the position close to the end position.

7. The tape cartridge according to claim 6 , wherein

the three opening inside walls include an inside wall main body and a corner portion at which the inside wall main body and a casing wall on a side of the installation base surface cross each other, and

the concave portion is constituted of a concave groove on the corner portion and an opening on the inside wall main body.

8. The tape cartridge according to claim 6 , wherein

the cartridge casing includes two casings separable in the installation direction, and

the concave portion is provided on one of the casings positioned closer to a front side in the installation direction.

9. A tape cartridge detachably installed on a cartridge installation portion of a tape printing apparatus, the cartridge installation portion on which the tape cartridge having a printing tape and an ink ribbon are installed being provided with a first output portion that outputs forward rotation power to feed the printing tape, a second output portion that outputs reverse rotation power to wind up the ink ribbon, and a main-body-side contact portion that is allowed to come in contact with the tape cartridge when the tape cartridge is installed, the tape cartridge comprising:

when being installed on the cartridge installation portion,

a first input portion to which the forward rotation power is input from the first output portion of the tape printing apparatus;

a second input portion to which the reverse rotation power is input from the second output portion of the tape printing apparatus;

a cartridge-side contact portion that is allowed to come in contact with the main-body-side contact portion of the tape printing apparatus, the cartridge-side contact portion existing on an imaginary line connecting the first output portion and the second output portion together or existing near the imaginary line and so as to resist rotation forces generated in the tape cartridge by rotation forces of the first output portion and the second output portion of the tape printing apparatus; and

an insertion opening that allows a head cover to be inserted in the insertion opening when the tape cartridge is installed into the cartridge installation portion on which a printing head portion and the head cover having a plurality of edge portions are provided and the main-body-side contact portion projects from one of the edge portions of the head cover,

wherein

the head cover covers a side of a rotation supporting shaft of the printing head portion, includes a first covering side wall and a second covering side wall crossing each other, and has the main-body-side contact portion projecting from the edge portion at which the first covering side wall and the second covering side wall cross each other,

an opening peripheral wall portion defining the insertion opening includes a first opening inside wall corresponding to the first covering side wall and a second opening inside wall crossing the first opening inside wall and corresponding to the second covering side wall, and

a corner portion at which the first opening inside wall and the second opening inside wall cross each other serves as the cartridge-side contact portion.

10. The tape cartridge according to claim 9 , wherein

the first input portion is included in a platen roller configured to be rotatable, and

the second input portion is included in a winding-up core configured to be rotatable.

11. The tape cartridge according to claim 9 , wherein

the cartridge-side contact portion receives the main-body-side contact portion.

12. The tape cartridge according to claim 9 , wherein

the cartridge-side contact portion is formed in a shape expanding toward an installation direction to the cartridge installation portion.

13. The tape cartridge according to claim 9 , further comprising:

an insertion opening that allows the head cover to be inserted in the insertion opening,

wherein a printing head portion and a head cover are provided on the cartridge installation portion,

the main-body-side contact portion projects from the head cover, and

the cartridge-side contact portion is a portion facing the main-body-side contact portion of an opening peripheral wall portion defining the insertion opening.