Sheet supplying apparatus and printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsRyo Kobayashi, Toshiaki Yamaguchi, Masaki Sumioka, Itaru Wada, Yoshiaki Suzuki
Life of this patent
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Abstract
A sheet can be securely drawn out of a sheet roll irrespective of an outer diameter of the sheet roll, and then, can be conveyed. A driven roller moves according to the outer diameter of the sheet roll, so as to be brought into press-contact with an outer periphery of the sheet roll from below, with respect to the direction of gravity, irrespective of the outer diameter of the sheet roll. An arm member moves according to the outer diameter of the sheet roll, so as to guide a lower side of the sheet drawn through above the driven roller irrespective of the outer diameter of the sheet roll.
Claims18
A sheet supplying apparatus that draws a continuous sheet out of a sheet roll, comprising:
- a pressing unit having at least one pressing roller which is movable according to an outer diameter of the sheet roll, wherein the pressing roller rotates with respect to a first rotational axis and is brought into press-contact with an outer periphery of the sheet roll from below, with respect to a direction of gravity;
- and
- a lower guide member configured to move in association with the pressing unit so as to guide a lower surface of the sheet that is drawn through the pressing unit;
- wherein the pressing unit includes a mechanism configured to allow changes of a posture of the pressing roller with respect to a second rotational axis which is perpendicular to the first rotational axis so as to follow the outer periphery of the sheet roll.
Dependencies are inferred from the claim text.