Sheet conveyance apparatus, printing apparatus, and jam clearing method
AssigneeCanon Kabushiki Kaisha
InventorsToshiaki Tokisawa, Yoshiaki Suzuki, Kanto Kurasawa, Masahito Yoshida, Kota Uchida, Takayuki Okamoto
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Abstract
A sheet conveyance apparatus comprising: a first processing unit including a first sheet conveyance mechanism; a second processing unit including a second sheet conveyance mechanism; a cutting unit, interposed between the first processing unit and the second processing unit, for cutting the sheet; and a controlling unit that controls, in a case of trouble with sheet conveyance, driving of the first sheet conveyance mechanism until an end of the sheet reaches the first processing unit side beyond a cutting position of the cutting unit.
Claims15
A sheet conveyance apparatus, comprising:
- a first processing unit including a first sheet conveyance mechanism;
- a second processing unit including a second sheet conveyance mechanism;
- a cutting unit configured to cut a sheet at a cutting position between the first processing unit and the second processing unit;
- a first detecting unit, disposed in the vicinity of the first sheet conveyance mechanism, configured to detect the sheet;
- a second detecting unit, disposed in the vicinity of the second sheet conveyance mechanism, configured to detect the sheet;
- and
- a controlling unit that determines a status of the sheet in a path through the first processing unit and the second processing unit based on detections by the first detecting unit and the second detecting unit, in a case of trouble with sheet conveyance, and drives at least one of the first sheet conveyance mechanism and the second sheet conveyance mechanism based on the determination to allow an end of the sheet to escape from the cutting position.
A jam clearing method in a sheet conveyance apparatus comprising a first processing unit including a first sheet conveyance mechanism, a second processing unit including a second sheet conveyance mechanism, a and a cutting unit configured to cut a sheet at a cutting position between the first processing unit and the second processing unit, the jam clearing method comprising the steps of:
- detecting the sheet in the vicinity of the first sheet conveyance mechanism;
- detecting the sheet in the vicinity of the second conveyance mechanism;
- determining a status of the sheet in a path through the first and the second processing units based on the detections in a case where a sheet conveyance jam has occurred, and
- driving at least one of the first sheet conveyance mechanism and the second sheet conveyance mechanism based on the determined status to allow an end of the sheet to escape from the cutting position.
A jam clearing method in a sheet conveyance apparatus comprising a first processing unit including a first sheet conveyance mechanism, a second processing unit including a second sheet conveyance mechanism, and a cutting unit configured to cut a sheet at a cutting position between the first processing unit and the second processing unit, the jam clearing method comprising the steps of:
- detecting the sheet in the vicinity of the first sheet conveyance mechanism;
- detecting the sheet in the vicinity of the second conveyance mechanism;
- determining a status of the sheet in a path through the first processing unit and the second processing unit based on the detections in a case where a sheet conveyance jam has occurred;
- and
- switching processing for sheet recovery to the jam according to the determined status and whether the sheet to be conveyed is of a cut type or of a continuous type.
Dependencies are inferred from the claim text.