Sheet cassette and image forming apparatus

A sheet cassette for containing a sheet to be fed into an image forming device, comprising:

• a double structure portion including an upper plate and a lower plate;
• the lower plate having a first guide groove elongated widthwise of the sheet to be contained in the cassette and having a plurality of inch-based size engagement recesses and a plurality of centimeter-based size engagement recesses arranged longitudinally thereof;
• the upper plate being movable along the lower plate widthwise of the sheet to be contained in the cassette, and having a second guide groove overlapping with the first guide groove as seen vertically;
• the inch-based size engagement recesses being effectuated by locating the upper plate at a first position;
• the centimeter-based size engagement recesses being effectuated by locating the upper plate at a second position;
• a width limiting plate slidable widthwise of the sheet to be contained in the cassette according to a width of the sheet;
• and
• fixing means attached to the width limiting plate and partly inserted in the first guide groove and the second guide groove for fixing a position of the width limiting plate slid to be brought into engagement with one of the effectuated inch-based size or centimeter-based size engagement recesses.