Sheet binding apparatus and image forming system
AssigneeToshiba Tec Kabushiki Kaisha
InventorHiroyuki Taki
Life of this patent
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Abstract
A sheet binding apparatus includes a sheet conveyer, a tape holder, and first and second rollers. The sheet conveyer is configured to convey a sheet bundle with a leading end shifted, the sheet bundle having opposing first and second surfaces. The tape holder is configured to hold a tape at a position to which the leading end reaches such that the tape adheres to the leading end. The leading end with the tape passes and is pressed between the first and second rollers. The second roller is positioned upstream in the sheet forward direction from the first roller and to face the second surface of the sheet bundle. An angle between a line perpendicular to the sheet forward direction and a line passing rotational axes of the first and second rollers is greater than 0° and less than 90°.
Claims20
A sheet binding apparatus, comprising:
- a sheet conveyer configured to convey a sheet bundle with a leading end thereof in a sheet forward direction shifted in a stepwise manner, the sheet bundle having opposing first and second surfaces;
- a tape holder configured to hold a tape at a position which the leading end of the sheet bundle reaches as the sheet bundle is conveyed in the sheet forward direction by the sheet conveyer such that the tape adheres to the leading end of the sheet bundle;
- and
- a first roller and a second roller between which the leading end of the sheet bundle with the tape passes and is pressed as the sheet bundle is conveyed in the forward direction, wherein
- the second roller is upstream in the sheet forward direction from the first roller and faces the second surface of the sheet bundle, and
- an angle between a first straight line perpendicular to the sheet forward direction and a second straight line passing through a rotational axis of the first roller and a rotational axis of the second roller is greater than 0° and less than 90°.
A sheet binding apparatus comprising:
- a sheet guide configured to guide a sheet bundle, the sheet bundle having opposing first and second surfaces;
- a shifting device configured to cause a leading end, in a sheet forward direction, of the sheet bundle on the sheet guide to be shifted in a stepwise manner;
- a tape holder configured to hold a tape at a position which the leading end of the sheet bundle reaches as the sheet bundle is guided in the sheet forward direction by the sheet guide such that the tape adheres to the leading end of the sheet bundle;
- and
- a first roller and a second roller between which the leading end of the sheet bundle and the tape passes and is pressed as the sheet bundle is guided in the forward direction, wherein
- the second roller is upstream in the sheet forward direction from the first roller and faces the second surface of the sheet bundle, and
- an angle between a first straight line perpendicular to the sheet forward direction and a second straight line passing through a rotational axis of the first roller and a rotational axis of the second roller is greater than 0° and less than 90°.
An image forming system, comprising:
- an image forming apparatus configured to discharge printed sheets;
- and
- a sheet binding apparatus configured to bind printed sheets discharged from the image forming apparatus, the sheet binding apparatus comprising:
- a sheet conveyer configured to convey a sheet bundle with a leading end thereof in a sheet forward direction shifted in a stepwise manner, the sheet bundle having opposing first and second surfaces;
- a tape holder configured to hold a tape at a position which the leading end of the sheet bundle reaches as the sheet bundle is conveyed in the sheet forward direction by the sheet conveyer such that the tape adheres to the leading end of the sheet bundle;
- and
- a first roller and a second roller between which the leading end of the sheet bundle with the tape passes and is pressed as the sheet bundle is conveyed in the forward direction, wherein
- the second roller is upstream in the sheet forward direction from the first roller and faces the second surface of the sheet bundle, and
- an angle between a first straight line perpendicular to the sheet forward direction and a second straight line passing through a rotational axis of the first roller and a rotational axis of the second roller is greater than 0° and less than 90°.
Dependencies are inferred from the claim text.