Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1995-03-06
1999-04-27
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 32, B41J 2165
Patent
active
058984453
ABSTRACT:
An inkjet printer has a printhead mounted in a carriage which periodically moves along a printhead path in a carriage scan direction to a stop position in a service station where an actuation device imparts translational motion to a wiper blade. The wiper blade moves along a linear wiping path orthogonal to the printhead path and across ink orifices on a nozzle surface of the printhead during a wiping operation. The wiper blade is removably mounted on a base and is split to form a first blade for wiping one column of ink orifices and a second blade for simultaneously wiping another column of ink orifices on a nozzle surface of the printhead. In a preferred form of the invention, the service station provides different sequential wiping steps with successive wiper blades by first drawing ink onto the nozzle surface from the ink orifices with a rounded blade edge of a leading wiper blade, and then wiping the ink from the nozzle surface with a sharp blade edge of a following wiper blade. The sequential wiping steps are repeated twice during a normal wiping cycle--once when the wiper blades leave a parking location to wipe across the stationary printhead, and again when the wiper blades change direction to wipe back across the same stationary printhead to return to the parking location located away from the printhead path.
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Hewlett-Packard Journal dated Feb. 1994, "Print Cartridge Fixturing and Maintenance in the HP DeskJet 1200C Printer" by Michael T. Dangelo, Reza Movaghar, and Arthur K. Wilson.
Becker Richard A.
Osborne William S.
Wilson Arthur K.
Hewlett--Packard Company
Le N.
Potts Jerry R.
Romney David S.
Tran Thien
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