Patent ID: 7232268

Claim:
A roll sheet holder which holds a roll sheet wound on a cylindrical sheet core having a through hole opening at both ends and is removably mountable in a tape printer which includes a feeding device which draws the roll sheet to feed an unwound part thereof, a printing device which prints on the part of the roll sheet fed by the feeding device, the roll sheet holder comprising: a guide member including a first cylindrical part which is formed with a cylindrical through hole and is fitted in one open end of the sheet core and a first flange part which is formed in an outer periphery of an outer end face of the first cylindrical part and is brought into contact with one end face of the roll sheet; a positioning holding member which is arranged in contact with the other end face of the roll sheet and formed with a second cylindrical part on an inner surface, the second cylindrical part being fitted in the other open end of the sheet core; a shaft including a first end which is fitted in the through hole of the first cylindrical part of the guide member and is provided with a second flange part fixed in contact with an outer surface of the first flange part and a second end which is fitted in the second cylindrical part to be fixed to the positioning holding member; wherein the roll sheet holder is mountable in the tape printer which includes an insertion opening in which the unwound part of the roll sheet is inserted and a support portion provided upstream of the insertion opening in a direction of feeding the unwound part of the roll sheet; the first flange part includes: a first extended portion extending downward in a predetermined length from a lower periphery of the outer end face of the first cylindrical part, the first extended portion being brought into contact with a bottom surface of the tape printer when the roll sheet holder is mounted therein; and a frontward extended portion formed extending downstream in a direction of drawing the roll sheet from the outer periphery of the outer end face of the first cylindrical part to have a front end which is located outside of an outermost surface of the roll sheet of a maximum diameter and have a lower edge which is brought into contact with an upper surface of the support portion when the roll sheet holder is mounted in the tape printer; and the roll sheet holder is arranged to unwind the roll sheet from above the sheet core and inserted in the insertion opening when the roll sheet holder is mounted in the tape printer.