DR. ERIC CARLTON JOHNSON, D.O.
Anesthesiologist Assistant in Sacramento, CA

6220699, Apr 24, 2001

Feb 17, 1999

9/251706

Christopher C. Taylor - Barcelona, ES
Antoni Murcia Serra - Barcelona, ES
Richard H. Lewis - Barcelona, ES
Eric Joseph Johnson - Sacramento CA
Xavier Girones - Barcelona, ES
Albert Serra - Barcelona, ES
Emilio Angulo - Barcelona, ES

Hewlett-Packard Company - Palo Alto CA

B41J 2175

347 85

A printer apparatus and method of actuating a fluid pump in a printer to deliver fluid to an ink jet printhead without removing the printhead from a printhead carriage particularly useful for priming inkjet printheads using an air displacement pump to deliver air under positive pressure to the printheads. The pump is located proximate a service station on the printer and is automatically actuated by movement of the carriage to service station. The pump may be arcuately positionable to align the pump with a selected one of air passageways provided in a printhead holddown cover on the printhead carriage. Algorithms are provided for locating the precise position of the pump outlet along the carriage scan axis relative to its intended design location and for arcuately positioning the pump relative to the carriage to engage the pump outlet with a selected one of conduits in the carriage connected to each printhead.

6481822, Nov 19, 2002

Feb 26, 2001

09/793316

Antoni Murcia - Barcelona, ES
Xavier Bruch - Barcelona, ES
Emilio Angulo - Barcelona, ES
Eric Joseph Johnson - Sacramento CA

Hewlett-Packard Company - Palo Alto CA

B41J 2165

347 22, 347 29, 347 32, 347 33

Service station components for interacting with one type of printhead are located to be aligned in operative position only in a first servicing mode, and service station components for interacting with another type of printhead are differently located to be aligned in operative position only in a second servicing mode. This allows for different servicing schemes of two or more modes to be applied based on the individual characteristics of the ink and/or nozzle plates employed in inkjet printheads. In some instances, an individual printhead can be serviced in more than one servicing mode. In a preferred embodiment, replaceable service station units are provided for each different printhead.

6402290, Jun 11, 2002

Aug 16, 2000

09/639729

Eric J. Johnson - Sacramento CA
Antoni Murcia - Barcelona, ES
B Michael Eckard - Cardiff CA

Hewlett-Packard Company - Palo Alto CA

B41J 2165

347 32, 347 29, 347 33

A replaceable inkjet printhead cleaner service station system has separate replaceable cleaning units for each printhead in an inkjet printing mechanism, which has a pallet that moves the cleaning units translationally to service the printheads. Each cleaning unit has a printhead wiper, a printhead snout wiper, a capping system, a spittoon, and optionally, an ink solvent application system. A service station pallet moves a replaceable base between rest and sealing positions, with the base defining a cam surface. A sled has a cam follower that rides along the cam surface, with the sled supporting a cap lip. An activation wall extends from the sled to engage the printhead and move the sled along the cam surface to the sealing position through linear motion of the pallet while the printhead remains stationary. A method is provided for sealing an inkjet printhead, along with a printing mechanism employing such a capping system.

6224186, May 1, 2001

Jan 8, 1999

9/227383

Eric J. Johnson - Sacramento CA
Todd R. Medin - Vancouver WA
Antoni Murcia - Barcelona, ES

Hewlett-Packard Company - Palo Alto CA

B41J 2165

347 28

A replaceable inkjet printhead cleaner service station system has separate replaceable cleaning units for each printhead in an inkjet printing mechanism, which has a pallet that moves the cleaning units translationally to service the printheads. Each cleaning unit has a printhead wiper, a printhead snout wiper, a capping system, a spittoon, and optionally, an ink solvent application system. The application system has a reservoir body impregnated with an ink solvent, and a solvent distribution member including a unitary applicator wick having a ramped portion located to apply the ink solvent to the printhead when an edge of the printhead is brought into contact with the wick. A wick support spring is preloaded to supply a substantially consistent amount of ink solvent to the printhead, regardless of vertical spacing or tolerance variations therebetween. A method is provided for cleaning an inkjet printhead, along with a printing mechanism employing such a system.

6135585, Oct 24, 2000

Jan 8, 1999

9/227448

Eric J. Johnson - Sacramento CA
Antoni Murcia - Barcelona, ES
B. Michael Eckard - Cardiff CA

Hewlett-Packard Company - Palo Alto CA

B41J 2165

347 32

A replaceable inkjet printhead cleaner service station system has separate replaceable cleaning units for each printhead in an inkjet printing mechanism, which has a pallet that moves the cleaning units translationally to service the printheads. Each cleaning unit has a printhead wiper, a printhead snout wiper, a capping system, a spittoon, and optionally, an ink solvent application system. A service station pallet moves a replaceable base between rest and sealing positions, with the base defining a cam surface. A sled has a cam follower that rides along the cam surface, with the sled supporting a cap lip. An activation wall extends from the sled to engage the printhead and move the sled along the cam surface to the sealing position through linear motion of the pallet while the printhead remains stationary. A method is provided for sealing an inkjet printhead, along with a printing mechanism employing such a capping system.