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US 5,230,457 AGranted
Sheet stapler
AssigneeCanon Kabushiki Kaisha
InventorsMasakazu Hiroi, Koichi Murakami, Yuji Takahashi
Life of this patent
Estimating the term…
Abstract
A sheet stapling apparatus including a stapling device for stapling a set of sheets, a load detecting device for detecting a level of a load of the stapling device during a stapling operation, and a signal generating device for generating a signal when the load detected by the load detecting device is outside a predetermined range.
Claims30
A sheet stapling apparatus, comprising:
- stapling means, movable from a home position to a stapling position, for stapling a set of sheets, said stapling means including a hammer for driving a staple into the set of sheets;
- driving means for driving said stapling means toward the stapling position, said driving means including an electrical driving means for supplying power to said hammer;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is outside of a predetermined level;
- and
- control means for controlling said driving means to move said stapling means toward the home position when the load detected by said load detecting means is not less than a predetermined level, wherein
- said load detecting means detects the level of the load by detecting a level of current through said electrical driving means.
3 more elements
A sheet stapling apparatus, comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a staple position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is over the predetermined current;
- and
- control means for controlling movement of said driving means to return said hammer to the home position when said detecting means generates the signal.
1 more element
A sheet stapling apparatus, comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a staple position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting a light current load of said electrical driving means when a current applied to said electrical driving means is less than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects a light load, and then repeating the stapling operation.
1 more element
A sheet stapling apparatus, comprising:
- stapling means, reciprocable between a home position and a stapling position, for stapling a set of sheets, with said stapling means including a hammer for driving a staple into the set of sheets;
- driving means for reciprocating said stapling means in a direction toward the stapling position, said driving means including an electrical driving means for supplying power to said hammer;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation and for generating a signal when the load detected by said load detecting means is outside of a predetermined level,
- control means for controlling said driving means to move said stapling means toward the home position when the load detected by said load detecting means is not less than a predetermined level, wherein
- said load detecting means detects the current load by detecting either one of the a level of current and a voltage of said electrical driving means.
2 more elements
A sheet stapling apparatus, comprising:
- stapling means for stapling a set of sheets, with said stapling means including a hammer reciprocable between a home position and a stapling position for driving a staple, and driving means for reciprocating said hammer in a direction toward the stapling position, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting an overloaded current of said electrical driving means when a current applied to said electrical driving means is higher than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the overload.
1 more element
A sheet stapling apparatus for use with a sorter coupled with a copying machine, comprising:
- stapling means, movable from a home position to a stapling position, for stapling a set of sheets, said stapling means including a hammer for driving a staple into the set of sheets;
- driving means, including an electrical driving means for supplying power to said hammer, for driving said stapling means;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is outside of a predetermined level;
- and
- control means for controlling said driving means to move said stapling means toward the home position when the load detected by said load detecting means is not less than a predetermined level, wherein
- said load detecting means detects the current load by detecting either one of a level of a current and a voltage of said electrical driving means.
3 more elements
A sheet stapling apparatus for use with a sorter coupled with a copying machine, comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a stapling position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting an overloaded current of said electrical driving means when a current applied to said electrical driving means is higher than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the overload.
1 more element
A sheet stapling apparatus for use with a sorter coupled with a copying machine, comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a stapling position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting a light current load of said electrical driving means when a current applied to said electrical driving means is less than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the light load, and then repeating the stapling operation.
1 more element
In a sorter coupled with a copying machine and having an automatic sheet stapling apparatus comprising:
- stapling means, movable from a home position to a stapling position, for stapling a set of sheets including a hammer for driving a staple into the set of sheets;
- driving means, including an electrical driving means for supplying power to said hammer, for driving said stapling means;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is outside of a predetermining level;
- and
- control means for controlling said driving means to move said stapling means toward the home position when the load detected by said load detecting means is not less than a predetermined level, wherein
- said load detecting means detects the current load by detecting either one of a level of a current and a voltage of said electrical driving means.
3 more elements
In a sorter coupled with a copying machine and having an automatic sheet stapling apparatus comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a stapling position for driving a stapling into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting an overloaded current of said electrical driving means when a current applied to said electrical driving means is higher than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the overload.
1 more element
In a sorter coupled with a copying machine and having an automatic sheet stapling apparatus comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a stapling position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting a light current load of said electrical driving means when a current applied to said electrical driving means is less than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the light load, and then repeating the stapling operation.
1 more element
In a finisher coupled with a copying machine and having an automatic sheet stapling apparatus comprising:
- stapling means, movable from a home position to a stapling position, for stapling a set of sheets, said stapling means including a hammer for driving a staple into the set of sheets;
- driving means, including an electrical driving means for supplying power to said hammer, for driving said stapling means;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is outside a predetermined level;
- and
- control means for controlling said driving means to move said stapling means toward the home position when the load detected by said load detecting means is not less than a predetermined level, wherein
- said load detecting means detects the current load by detecting either one of a level of a current and a voltage of said electrical driving means.
3 more elements
In a finisher coupled with a copying machine and having an automatic sheet stapling apparatus comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a stapling position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting an overloaded current of said electrical driving means when a current applied to said electrical driving means is higher than the predetermined current during a stapling operation;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the overload.
1 more element
In a finisher coupled with a copying machine and having an automatic sheet stapling apparatus comprising:
- stapling means for stapling a set of sheets, said stapling means including hammer movable from a home position to a stapling position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- detecting means for detecting a light current load of said electrical driving means when a current applied to said electrical driving means is less than the predetermined current during a stapling operation thereby;
- and
- control means for controlling said driving means to return said hammer to the home position when said detecting means detects the light load, and then repeating the stapling operation.
1 more element
In a sorter coupled with a copying machine and having a sheet stapling apparatus, comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a staple position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is over the predetermined current;
- and
- control means for controlling movement of said driving means to return said hammer to the home position when said detecting means generates the signal.
1 more element
In a finisher coupled with a copying machine and having a sheet stapling apparatus, comprising:
- stapling means for stapling a set of sheets, said stapling means including a hammer movable from a home position to a staple position for driving a staple into the set of sheets, and driving means for driving said hammer, said driving means including an electrical driving means for supplying power to said hammer and being driven by a predetermined current;
- load detecting means for detecting a current load of said electrical driving means during a stapling operation, and for generating a signal when the load detected by said load detecting means is over the predetermined current;
- and
- control means for controlling movement of said driving means to return said hammer to the home position when said detecting means generates the signal.
1 more element
Dependencies are inferred from the claim text.