Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Kris M English

Wesley R Schalk

J P Harmon

Jeffrey K Pew

Jefferson Patrick Ward

Justin M Roman

Wen-Li Su

Jeffrey T Hendricks

Jeffrey D Langford

Jeremy A Davis

Jesse Otto Sutherland

Norman E Pawlowski

Ralph L Stathem

Morgan Thomas Schramm

Howard G Wong

Donald L Michael

Kevin E Swier

James P Kearns

David J Waller

Kevin D Almen

Daniel James Magnusson

Paul William Martin

Douglas Harriman

Carrie E Harris

James D Plymale

Babak Honaryar

David Otis

Kenneth L Christensen

Dean H Ouchida

David Lawrence McCormick

Jim Plymale

Steven Dworzak

John R Carnes

Shannon Miranda

Fluidic usage data over time is received from a printing device. A profile governing servicing maintenance of fluidic printhead nozzles of the printing device is determined based on the received fluidic usage data over time. The profile is transmitted to the printing device. The printing device performs spit-wipe-prime operations on the fluidic printhead nozzles according to the profile.

Profile governing servicing maintenance of fluidic printhead nozzles

Examples describe maintenance scheduling of printhead in an image forming device by monitoring image data processed by an image forming device, determining that the image data processed by the image forming device comprises color image data, and generating a firing signal based on a mode of the image forming device.

Maintenance scheduling

A three-dimensional (3D) printer includes a selective solidification module to selectively solidify portions of successive layers of a build material on a build platform. The 3D printer also includes a cartridge receiver to hold a removable material cartridge that accepts material from the 3D printer and makes material available to the 3D printer for printing of the 3D object.

Three-dimensional printer

A three-dimensional (3D) printer and method including a material cartridge receiver to hold a removable material cartridge to accept build material from the 3D printer and to make build material available from the material cartridge to the 3D printer for printing of the 3D object. A liquid cartridge receiver holds a removable liquid cartridge to make available print liquid from the liquid cartridge for a print assembly.

Example tracking measures for a first functionality category may be used to generate a modified tracking measure if it is determined that the first functionality category is unsupported by an automated functionality tracking component. The modified tracking measure may be transmitted for categorization in a second functionality category, wherein the second functionality category is different from the first functionality category.

Modified tracking measures

Examples of a user interface (UI) for depletion level selection are described herein. In some examples, a control element is displayed in a UI to select a color depletion level for a color printing substance of a printing device. A predicted cost-per-page to print is displayed in the UI based on based on a selected color depletion level. A color map for the printing device is determined based on the selected color depletion level and a separate black depletion level.

User interface for depletion level selection

One embodiment of a printhead servicing mechanism includes a driveshaft, and a sled including a rack adapted to selectively engage the driveshaft and a retaining wall positioned to retain the driveshaft on the rack in a zone.

Printing mechanism and method

One embodiment of a method of storing a printhead includes opening a valve to a vent of an ink reservoir, operating a pump in a first direction to pull ink from the ink reservoir through said valve, and pumping the ink pulled from the ink reservoir to an ink supply container.

Ink recirculation system

One aspect of this disclosure relates to a printer apparatus, comprising an orifice plate having a nozzle orifice formed therein. Ink can flow through the nozzle orifice. The orifice plate has an orifice plate surface energy and the ink has an ink surface tension. A wiper blade can be disposed proximate the orifice plate. The wiper has a wiper blade surface energy. The wiper blade surface energy is greater than or equal to the ink surface tension. The ink surface tension is greater than or equal to the orifice plate surface energy.

Printer wiper blades based on surface energy

The described embodiments relate to a print cartridge that can be configured to receive ink from one of at least two possible ink paths depending upon a desired printer configuration. In one exemplary embodiment, the print cartridge has a body configurable to receive ink from at least two different ink supply configurations, and a fluid interface that when coupled with the body effectively selects one of the ink supply configurations.

Methods and systems for a configurable print cartridge

A ganged inkjet printhead sealing system maintains inkjet printhead health in an inkjet printing mechanism during periods of printing inactivity. In multi-printhead printing mechanisms, separate caps seal against each of the printheads. The caps each have an outlet vent. The vents are all ganged together and fluidically coupled to a single, common pressure regulation chamber that isolates the environment adjacent the printhead nozzles from the external environment when the printheads are capped. A fluid in a U-shaped manometer tube, or an elastomeric bladder are used to isolate the pressure chamber environment. The bladder may be constructed as a thin-walled sheet, a spring-biased bag, or as a bellows. The pressure chamber volume changes to accommodate pressure spikes during the capping process, as well as environmental changes in temperature, elevation, barometric pressure, etc. An inkjet printing mechanism having such a ganged capping system, along with associated capping methods are also provided.

Ganged inkjet printhead capping system

In order that sensitive structures of inkjet printing mechanisms be cleaned without damaging these structures, a cleaning sheet and a process of using the sheet has been created. Debris and dried ink is removed from print cartridges and their carriage using a cleaning sheet having two strips of material spaced with a napped surface disposed longitudinally between the side edges and spaced apart from each other. By controlling the distance the strips are spaced from the sheet feed edge of the cleaning sheet, the print cartridges can be placed adjacent the strips for scrubbing against the strips without resulting in a media jam in the printer due to the increased thickness of the cleaning sheet.

Method of cleaning for an inkjet printer

Resting position error recognition for an ink-jet, translational-type, service station mechanism. Service station drive mechanism binding due to hard stop impact is compensated for by calculating a difference between when the drive mechanism stops and when a predetermined velocity change was first recorded. In a more sophisticated embodiment, noise filtering is employed to improve accuracy with increasing number of uses of the service station mechanism.

Mechanical deflection estimation for ink-jet service station motion servo

An adaptive wiping method of cleaning an inkjet printhead in an inkjet printing mechanism cleans two or more diverse printheads that have different wiping needs, such as those dispensing different types of ink. Each printhead has an associated wiper that is mounted on a single service station sled for relative movement with respect to the printheads to achieve wiping contact. By offsetting the wipers, during one portion of the wiping stroke, at least one of the printheads may be wiped while at least one other printhead is not being wiped. This adaptive wiping system allows the printheads to be individually wiped at different speeds, which allows the system to be tailored to meet the diverse servicing needs of different inkjet cartridges, for instance, those containing different ink formulations.

Growing community of inventors

Portland, OR, United States of America

Kris M English