Sheet supplying apparatus and printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsRyo Kobayashi, Toshiaki Yamaguchi, Masaki Sumioka, Itaru Wada, Yoshiaki Suzuki
Life of this patent
Estimating the term…
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 under in a gravity direction 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.
Claims19
A sheet supplying apparatus that draws a sheet out of a sheet roll and supplies the sheet, the sheet supplying apparatus comprising:
- a pressing unit having a roller configured to move according to an outer diameter of the sheet roll, to be brought into press-contact with an outer periphery of the sheet roll from under in a gravity direction;
- 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.
A sheet winding apparatus that winds a sheet in a form of a sheet roll, the sheet winding apparatus comprising:
- a pressing unit having a roller configured to move according to an outer diameter of the sheet roll, to be brought into press-contact with an outer periphery of the sheet roll from under in a gravity direction;
- 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;
- and
- a winding/driving mechanism configured to rotate the sheet roll in a winding direction of the sheet.
A printing apparatus comprising:
- a sheet supplying apparatus that draws a sheet out of a sheet roll and supplies the sheet, the sheet supplying apparatus comprising a pressing unit having a roller configured to move according to an outer diameter of the sheet roll, to be brought into press-contact with an outer periphery of the sheet roll from under in a gravity direction, 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;
- and
- a print unit configured to print an image on the sheet to be supplied from the sheet supplying apparatus.
A printing apparatus comprising:
- a sheet winding apparatus that winds a sheet in a form of a sheet roll, the sheet winding apparatus comprising a pressing unit having a roller configured to move according to an outer diameter of the sheet roll, to be brought into press-contact with an outer periphery of the sheet roll from under in a gravity direction, 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, and a winding/driving mechanism configured to rotate the sheet roll in a winding direction of the sheet;
- and
- a print unit configured to print an image on the sheet to be wound by the sheet winding apparatus.
Dependencies are inferred from the claim text.