US 5,492,422 AGranted

Ink ribbon cartridge

AssigneeSony Corporation

InventorShinichi Kondo

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Abstract

An ink ribbon cartridge including a cartridge housing having a first side wall and a second side wall opposed to each other. The cartridge housing has a pair of first engaging portions on an inside surface of the first side wall. A supply spool and a take-up spool are rotatably disposed between the first and second side walls in spaced relation and carry an ink ribbon wound thereon. The spools have first end portions formed with flanges and second end portions opposed to the first end portions. The flanges have second engaging portions engageable with the first engaging portions. U-shaped leaf springs are disposed between the second side wall and the second end portions of the spools and bias the first end portions of the spools against the first side wall. The U-shaped leaf springs include base portions and annular portions extending from the base portions, respectively. The base portions have openings receiving the second end portions of the spools, respectively.

Claims11

Dependent claims

An ink ribbon cartridge comprising:

a cartridge housing including a first wall and a second wall opposed to each other, said cartridge housing having a pair of first engaging portions on an inside surface of said first wall;
a pair of spools rotatably disposed between said first and second walls in spaced relation, said pair of spools including a supply spool and a take-up spool which carry an ink ribbon, said pair of spools having first end portions formed with flanges and second end portions opposed to said first end portions engageable with said pair of first engaging portions;
and
a pair of U-shaped leaf springs disposed between said second wall of said cartridge housing and said second end portions of said pair of spools to bias said first end portions of said pair of spools against said inside surface of said first wall;
said pair of U-shaped leaf springs including first base portions and second portions extending from said base portions, respectively, said base portions having openings which receive said second end portions of said pair of spools, respectively.

2 more elements

Dependencies are inferred from the claim text.