Cutter blade position detection mechanism and method of reporting cutter malfunction
First Claim
Patent Images
1. A sheet cutting device comprising:
- a cutter having a first and a second blade;
a cutter driving mechanism in connection with at least one of said blades for moving said blade through a plurality of positions for cutting material;
a voltage source in connection with said first blade; and
a current sensing device connected between said voltage source and said cutter for detecting an electrical current when said blades are in contact with one another.
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Abstract
A sheet cutting device utilizing cutter blades as a position detection mechanism and a method of reporting cutter malfunctions is provided. The sheet cutting device including a cutter having a pair of cutter blades, one of the blades connected to a cutter driving mechanism for moving the blade through a cutting cycle, a power source is connected to one of the blades so that a circuit is closed when the blades contact one another, and a current sensing device in connection with the circuit to identify when the blades are in physical contact.
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Citations
12 Claims
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1. A sheet cutting device comprising:
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a cutter having a first and a second blade;
a cutter driving mechanism in connection with at least one of said blades for moving said blade through a plurality of positions for cutting material;
a voltage source in connection with said first blade; and
a current sensing device connected between said voltage source and said cutter for detecting an electrical current when said blades are in contact with one another. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A sheet cutting device comprising:
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a cutter having a first and a second blade, said first blade insulated from electrical ground, said second blade electrically grounded;
a cutter driving mechanism in connection with at least one of said blades for moving said blade through a plurality of positions for cutting a sheet of material;
a voltage source in connection with said first blade;
a current sensing device connected between said voltage source and said cutter for detecting an electrical current when said blades are in contact with one another;
a counter in connection with said cutter driving mechanism for determining said plurality of positions within a cutting cycle;
a display unit; and
a processing unit in connection with said current sensing device, said cutter driving mechanism, said counter, and said display unit;
wherein said processing unit starts and stops said cutter driving mechanism and monitors said current sensing device and said counter for displaying a condition of said cutter. - View Dependent Claims (8)
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9. A printer comprising:
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a frame carrying paper for printing;
a cutter connected to said frame, said cutter having a first and a second blade, said first blade insulated from electrical ground, said second blade electrically grounded;
a cutter driving mechanism in connection with at least on of said blades for moving said blade through a plurality of positions for cutting said paper;
a voltage source in connection with said first blade;
a current sensing device connected between said voltage source and said cutter for detecting an electrical current when said blades are in contact with one another;
a counter in connection with said cutter driving mechanism for determining said plurality of positions within a cutting cycle;
a display unit; and
a processing unit in connection with said current sensing device, said cutter driving mechanism, said counter, and said display unit;
wherein said processing unit starts and stops said cutter driving mechanism and monitors said current sensing device and said counter for displaying a condition of said cutter. - View Dependent Claims (10, 11, 12)
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Specification