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US 8,302,896 B2Granted
Roll-paper feeding device and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorTakeshi Iwasaki
Life of this patent
Estimating the term…
Abstract
In a printer that uses a roll paper being a printing medium, when a 2-inch roll paper is used, as a flange member coaxially fixed to each central portion of both ends of a paper tube of the roll paper in its axial direction, a flange member with a smaller outer diameter than that of the flange member used for a 3-inch roll paper is used.
Claims12
A roll-paper feeding device that feeds a roll paper configured by winding a paper around a paper tube, the roll-paper feeding device comprising:
- at least two rotation support members configured to rotatably support a circular plate shaped flange member fixed to each of both ends of the roll paper to hold the roll paper;
- a rewinding roller configured to be engaged with at least one of the two rotation support members and rotate the flange member in an opposite direction to a forward feeding direction of the roll paper;
- a paper feed roller configured to apply conveying force to the paper and apply rotation in the forward feeding direction to the roll paper via the paper;
- a drive unit configured to transmit drive force required for conveyance of the paper to the paper feed roller;
- and
- a position changing unit configured to change a position interval between a position of the one of the two rotation support members that is engaged with the rewinding roller and a position of another one of the two rotation support members that is not engaged with the rewinding roller, in accordance with an outer diameter of the flange member, the position interval being along a direction perpendicular to an axial direction of the paper tube or to a width direction of the roll paper.
3 more elements
A roll-paper feeding device that feeds a roll paper configured by winding a paper around a paper tube, the roll-paper feeding device comprising:
- at least two rotation support members configured to rotatably support a circular plate shaped flange member fixed to each of both ends of the roll paper to hold the roll paper;
- a rewinding roller configured to be engaged with at least one of the two rotation support members and rotate the flange member in an opposite direction to a forward feeding direction of the roll paper;
- a paper feed roller configured to apply conveying force to the paper and apply rotation in the forward feeding direction to the roll paper via the paper;
- drive means for transmitting drive force required for conveyance of the paper to the paper feed roller;
- and
- position changing means for changing a position interval between a position of the one of the two rotation support members that is engaged with the rewinding roller and a position of another one of the two rotation support members that is not engaged with the rewinding roller, in accordance with, an outer diameter of the flange member, the position interval being along a direction perpendicular to an axial direction of the paper tube or to a width direction of the roll paper.
3 more elements
Dependencies are inferred from the claim text.