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US 5,517,223 AGranted
Inkjet printing method and apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorKyu-cheol Shin
Life of this patent
Estimating the term…
Abstract
An inkjet printing method and apparatus in which an ejecting head is rotated to selectively eject ink by centrifugal force. The viscosity of ink is varied electrically or magnetically. The method and apparatus requires no additional heater, piezoelectric element or compressor, thereby simplifying the structure and reducing the production cost of the printer.
Claims3
An inkjet printing apparatus comprising:
- an ejecting head having a nozzle for ejecting ink having a magnetically variable viscosity;
- a motor having a rotating shaft for rotating said ejecting head;
- an ejection controller including a circular magnetic core spaced from and located on opposite sides of said nozzle of said ejecting head within a rotation track of said nozzle, a coil provided on said circular magnetic core to which a writing potential is applied to vary the viscosity of the ink for selectively discharging a predetermined amount of the ink through said nozzle with centrifugal force produced by rotation of said ejecting head, and switching means for switching the writing potential according to a writing signal;
- and
- a semicylindrical paper guide member centered about the shaft of said motor for guiding paper.
2 more elements
Dependencies are inferred from the claim text.