Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Melissa S Gedraitis

Peter G Hwang

Maaike Louise Evers

Daniel R Dwyer

Mark A Smith

Jeffrey G Bingham

Howard G Wong

Michael K Bowen

Jeremy A Davis

Michael J Allison

Donald R McClelland

Michael M Leon

Mark D Zinser

Ralph L Stathem

Daniel D Dowell

Charles R Steinmetz

Louis C Barinaga

Jeffrey D Langford

Marc A Baldwin

Ashley E Childs

Michael Lee Hilton

Judson Malcolm Leiser

Patrick V Boyd

Eric L Gasvoda

David B Novak

Christopher John Arnold

David J Benson

Dale A King

Russell Sterling Sauer

Kelvin Chiew

Kevin David Koller

Jeffrey A Mueller

Michelle Pangborn

Louis c/o Hp Company Barinaga

In example implementations, a storage apparatus is provided. The storage apparatus includes a sealed reservoir partially filled with a print agent. A float is partially submerged in the print agent. A weight is coupled to a submerged portion of the float. A vent is coupled to the float and an opening in the sealed reservoir. A valve is coupled to an unsubmerged portion of the float.

Vented reservoirs with floats for print agents

When a first fluid supply of a fluid-ejection device is empty and a second fluid supply of the device has a non-empty fluid amount less than a threshold, the device performs an action related to the second fluid supply. After the action has been performed and both the first and second fluid supplies have been replaced, the device primes the first and second fluid supplies. The action can include emptying the second fluid supply, and then messaging that both the fluid supplies require replacement. The action can include messaging that both fluid supplies require replacement although the second fluid supply is not empty. The action can include not messaging even that the first fluid supply requires replacement until the second fluid supply also becomes empty.

Replacement and priming of fluid-ejection device fluid supplies

In one example, method includes displaying an estimate of the number of pages that can be printed from a total amount of printing fluid including a printing fluid supply and a printing fluid reserve. The estimate is decremented in amounts of a first interval, in response to a first sensor signal indicating that the printing fluid supply is not empty. The estimate is decremented in amounts of a second interval that is smaller than the first interval, in response to a second sensor signal indicating that the printing fluid supply is empty.

Decrementing a printing fluid-based estimate of a number of pages that can be printed according to different intervals

A fluid container usable with an image forming apparatus including a receiving unit having a plurality of receiver slots is disclosed. The fluid container includes a housing unit including a plurality of wall portions and a fluid chamber to store fluid therein. The housing unit is to removably attach to a respective receiver slot of the receiving unit. The fluid container includes a first key set disposed on an exterior surface of one wall portion of the housing unit. The first key set is to form a first key pattern corresponding to a conforming first receiver key pattern of a respective receiver slot. The fluid container includes a second key set disposed on an exterior surface of an other wall portion of the housing unit. The second key set is to form a second key pattern corresponding to a conforming second receiver key pattern of the respective receiver slot.

Fluid container having first and second key set

An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The on-axis printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the on-axis printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube.

Ink delivery system and methods for improved printing

A method for detecting a clog in a suspect portion of an ink conduit of an ink delivery system, includes the steps of pumping a slug of ink of a known volume into the ink conduit, attempting to pump the slug past the suspect portion, and detecting the presence of ink at a position beyond the suspect portion.

Clog detection and clearing method for ink delivery system

An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube.

An occlusion for use in a peristaltic pump includes independently movable occlusion fingers. The fingers are integrally formed as a single unitary body.

Peristaltic pump

Printer access door

Inkjet printer with fixed sheet feeder

Inkjet printer

Growing community of inventors

Camas, WA, United States of America

Melissa S Gedraitis