Patent ID: 6257780
Filing Date: 2001-07-10
Classification: B41J

Abstract:
An ink ribbon cartridge comprising:a body unit; anda ribbon unit detachably mounted on the body unit;wherein the body unit includesa case having a first plate and a second plate facing the first plate, the first plate being formed with a first opening and a second opening each with a cutout portion, the second plate being formed with a third opening and a fourth opening;a first spool detachably rotatably mounted in the first opening;a second spool detachably rotatably mounted in the second opening;a third spool rotatably mounted in the third opening; anda fourth spool rotatably mounted in the fourth opening, wherein at least one of the third spool and fourth spool is mounted in an undetachable fashion in the corresponding at least one of the third opening and the fourth opening; andthe ribbon unit includesa first tube having a first end and a second end opposite from the first end, the first end being detachably engaged with the first spool, the second end being detachably engaged with the third spool;a second tube having a third end and a fourth end opposite from the third end, the third end being detachably engaged with the second spool, the fourth end being detachably engaged with the fourth spool; andan ink ribbon would around the first tube and the second tube;whereinthe ribbon unit is detached from the body unit while the at least one of the third spool and the fourth spool is mounted in the corresponding at least one of the third opening and the fourth opening.