Ink cassette, ink ribbon supply container, and method of attaching ink ribbon to ink cassette

摘要

An ink cassette (40) includes a first part (41) and a second part (42) each of which has a first end provided with a substantially U-shaped bobbin holder (44) and a second end provided with a similar bobbin holder. Each of the U-shaped bobbin holders has a pair of flexible arms defining a groove in which a pair of protrusions are provided. An ink ribbon set (10) including an ink ribbon (13) and two bobbins (11,12) is stored in an ink ribbon supply container. The bobbins are supported at the same depth and spaced from each other a distance equal to a spacing between thee first and second parts. The ink cassette is overlaid on the ink ribbon set, with alignment marks aligned, and then the ink cassette is forced into the supply container. The bobbins are inserted past the protrusions into the grooves and are held around their axes by the arms.