Sheet processing apparatus and method of controlling same, sheet processing method, and storage media therefor
AssigneeCanon Kabushiki Kaisha
InventorsMitsushige Murata, Norifumi Miyake, Kiyoshi Okamoto
Life of this patent
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Abstract
A sheet processing apparatus is provided, which is capable of achieving high quality processing and maintaining high productivity without giving rise to problems such as sheet jam or damage of sheets even when various sheets having different attributes are conveyed. A buffer roller 505 is inhibited from carrying out a sheet staying operation in accordance with the type of sheets conveyed from an upstream side of the apparatus, to be conveyed to a downstream side of the apparatus via the buffer roller 505.
Claims22
A sheet processing apparatus comprising:
- a conveyance path;
- a discharging port;
- conveyance means for conveying sheets along said conveyance path to said discharging port;
- sheet staying means for temporarily maintaining said sheets in a looped path;
- sheet type determining means for determining whether or not each of said sheets conveyed by said conveyance means is suitable for being maintained in said looped path;
- and
- sheet staying number limiting means for limiting a number of sheets to be maintained by said sheet staying means when each of the sheets conveyed by said conveyance means is not suitable for being maintained in said looped path.
A sheet processing apparatus which conveys a sheet from an upstream side to a downstream side of the apparatus, comprising:
- sheet staying means for maintaining the sheet conveyed from said upstream side in a looped path;
- sheet type determining means for determining a type of sheet from said upstream side, to be conveyed to said downstream side via said sheet staying means;
- and
- control means for controlling said sheet staying means to inhibit said sheet staying means from maintaining the sheet from said upstream side in a looped path based on the type of sheet determined by said sheet type determining means.
A sheet processing apparatus which conveys sheets from an upstream side to a downstream side of the apparatus, comprising:
- sheet staying means for maintaining the sheet conveyed from said upstream side in a looped path;
- sheet type determining means for determining a type of sheet from said upstream side, to be conveyed to said downstream side via said sheet staying means;
- and
- control means for controlling a number of sheets to be maintained in said looped path by said sheet staying means when the type of sheet determined by said sheet type determining means is not suitable for being maintained in said looped path.
A sheet processing apparatus which conveys a sheet from an upstream side to a downstream side of the apparatus, comprising:
- a sheet staying unit for maintaining the sheet conveyed from said upstream side in a looped path;
- a sheet type determining unit for determining a type of sheet from said upstream side, to be conveyed to said downstream side via said sheet staying unit;
- and
- a controller for controlling said sheet staying unit to inhibit said sheet staying unit from maintaining the sheet from said upstream side in said looped path when the type determined by said sheet type determining unit is not suitable for being maintained in said looped path.
A sheet precessing apparatus which conveys sheet from an upstream side to a downstream side of the apparatus, comprising:
- a sheet staying unit for maintaining the sheet conveyed from said upstream side in a looped path;
- a sheet type determining unit for determining a type of sheet from said upstream side, to be conveyed to said downstream side via said sheet staying unit;
- and
- a controller for controlling a number of sheets to be maintained in said looped path by said sheet staying unit when the type determined by said sheet type determining unit is not suitable for being maintained in said looped path.
Dependencies are inferred from the claim text.