Internal drum communication using a capacitor
First Claim
1. A printer for printing onto a print media, comprising:
- a rotating drum platen for holding a print medium on an outer surface thereof, the drum platen having an interior volume defined therein and an end wall extending transversely to the outer surface;
apparatus for rotating the drum to move the print medium during printing operations;
a printer controller mounted in a fixed position relative to a printer chassis;
an electronic circuit disposed in said interior volume of said drum platen; and
a data communication link for passing data between the printer controller and the electronic circuit, the link comprising a capacitor comprising a first capacitive structure mounted to the end wall of the drum platen, and a second capacitive structure mounted in fixed relation to the drum platen adjacent the end surface and in close proximity to the first capacitive structure, wherein data is passed through said capacitor.
2 Assignments
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Accused Products
Abstract
An ink-jet printer for ink-jet printing onto a print media. The printer has an ink-jet cartridge for ejecting ink onto a print medium during printing operations. A rotating drum platen holds a print medium on an outer surface thereof, the drum platen having an interior volume defined therein and an end wall extending transversely to the outer surface. A carriage holds the cartridge in a closely arranged position relative to the external surface of the drum. A drum drive apparatus rotates the drum to move the print medium in relation to the printhead of the cartridge. The printer further has a printer controller mounted in a fixed position relative to a printer chassis, and an electronic circuit disposed in the interior volume of the drum platen. A data communication link passes data between the printer controller and the electronic circuit. The data link includes a capacitor comprising a first capacitor ring structure mounted to the end wall concentric to an axis of rotation of the platen, and a second capacitor ring structure mounted in fixed relation to the drum platen adjacent the end surface and in close proximity to the first capacitor ring structure.
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Citations
11 Claims
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1. A printer for printing onto a print media, comprising:
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a rotating drum platen for holding a print medium on an outer surface thereof, the drum platen having an interior volume defined therein and an end wall extending transversely to the outer surface; apparatus for rotating the drum to move the print medium during printing operations; a printer controller mounted in a fixed position relative to a printer chassis; an electronic circuit disposed in said interior volume of said drum platen; and a data communication link for passing data between the printer controller and the electronic circuit, the link comprising a capacitor comprising a first capacitive structure mounted to the end wall of the drum platen, and a second capacitive structure mounted in fixed relation to the drum platen adjacent the end surface and in close proximity to the first capacitive structure, wherein data is passed through said capacitor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An ink-jet printer for ink-jet printing onto a print media, comprising:
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an ink-jet cartridge for ejecting ink onto a print medium during printing operations; a rotating drum platen for holding a print medium on an outer surface thereof, the drum platen having an interior volume defined therein and an end wall extending transversely to the outer surface; a carriage for holding said cartridge in a closely arranged position relative to a surface of said drum; apparatus for rotating the drum to move the print medium in relation to the printhead of the cartridge; a printer controller mounted in a fixed position relative to a printer chassis; an electronic circuit disposed in said interior volume of said drum platen; and a data communication link for passing data between the printer controller and the electronic circuit, the link comprising a capacitor comprising a first capacitor ring structure mounted to the end wall concentric to an axis of rotation of the platen, and a second capacitor ring mounted in fixed relation to the drum platen adjacent the end surface and in close proximity to the first capacitor ring. - View Dependent Claims (8, 9, 10, 11)
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Specification