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US 6,918,665 B2Granted
Printing system with compact transfer roller
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
Estimating the term…
Abstract
A compact motorized transfer roller for a printer is disclosed. The roller has a cylindrical body with an outer surface and an interior space. A motor is located in the interior space and rotates the body. The rotating body advances and prints on a sheet of media. In some embodiments, the motor is a stepper motor and uses a gear assembly in which worm gear carried by an output shaft of the motor cooperates with one or more reduction gears.
Claims18
A compact motorized transfer roller for a printer, comprising:
- a cylindrical body having two ends, an outer surface and an interior space, wherein each of said ends is supported by low friction bearings carried by a pair of cooperating end caps, and a first end carries an internal gear;
- and
- a motor located in the interior space, said motor driving the internal gear for rotating the outer surface and advancing print media;
- wherein the outer surface is adapted to carry ink and make a printing impression on the print media.
1 more element
Dependencies are inferred from the claim text.