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Hewlett packard Indigo B v patents


Recent patent applications related to Hewlett packard Indigo B v. Hewlett packard Indigo B v is listed as an Agent/Assignee. Note: Hewlett packard Indigo B v may have other listings under different names/spellings. We're not affiliated with Hewlett packard Indigo B v, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hewlett packard Indigo B v-related inventors


Electrostatic ink compositions

Herein is disclosed a cyan electrostatic ink composition, the cyan electrostatic ink composition comprising: a cyan pigment, a basic dispersant, a phthalocyanine having acid groups, a resin and a charge director.... Hewlett packard Indigo B v

Spectrophotometer diagnosis

A spectrophotometer diagnosis system and a method for diagnosing a spectrophotometer, wherein at least one test patch is printed in proximity to at least one non-printed substrate patch, at least one value characteristic of the at least one test patch and/or the at least one substrate patch is measured using... Hewlett packard Indigo B v

A cleaning system for cleaning a photoconductive surface

Cleaning a photoconductive surface (16) from particles and excess fluid with at least two wiper blades, wherein a first wiper blade (12) is to contact the photoconductive surface (16) and to wipe at least some of the particles and at least some of the excess fluid from the photoconductive surface... Hewlett packard Indigo B v

Printed output inspection

In one example, a printed output inspection unit (300) for a web printing system (100). The inspection unit has a first L-inverter (310) disposed in a first plane (315), and a second L-inverter (320) disposed in a second plane (325) offset from the first plane in a direction orthogonal to... Hewlett packard Indigo B v

Cross-talk effect in a laser diode array

An electric cross-talk, ECT, effect of laser-diode array is measured by capturing a first image of a first laser spot of a first laser diode with a second laser diode being turned off (10) and a second image of a second laser spot of the first laser diode while switching... Hewlett packard Indigo B v

Electrophotographic varnish composition

An electrophotographic varnish composition that comprises, in a liquid carrier, a polymeric resin; an epoxy-based cross-linking agent, a mono-epoxy diluent and a metal catalyst and/or a photo-initiator. Also described herein is a method for making such electrophotographic varnish composition.... Hewlett packard Indigo B v

Spatially selective heating of intermediate transfer member

In an example, an apparatus is described that includes a photosensitive imaging plate, an intermediate transfer member, and a heating unit. The photosensitive imaging plate attracts a layer of printing fluid. The intermediate transfer member contacts the photosensitive imaging plate and receives the layer of printing fluid from the photosensitive... Hewlett packard Indigo B v

Fluid application

Certain examples of apparatus for applying fluid in a printing system are described. The apparatus comprise a first chamber having a first aperture extending along a first axis, and a second chamber having a second aperture extending along a second axis, wherein the first axis is substantially parallel to the... Hewlett packard Indigo B v

Roller arrangement, a forming a pattern, a printing a pattern and printing a pattern

A roller arrangement for printing apparatus comprises a first roller. The first roller comprises a plurality of cells. Each of the plurality of cells receives an amount of a coating material. The roller arrangement further comprises an extractor to remove at least a portion of the coating material from a... Hewlett packard Indigo B v

Impeller blade for calibrating light sensor

In some examples, an apparatus can include a light transmitter, a light sensor aligned along a light transmittance axis of the light transmitter, an impeller positioned between the light transmitter and the light sensor. The impeller can in some examples include a blade to pass through the light transmittance axis... Hewlett packard Indigo B v

Liquid electrophotographic varnish composition

A liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a solid catalyst comprising at least one amine group; and a carrier liquid.... Hewlett packard Indigo B v

Ink composition with uv-curable polymeric resin background

Provided in one example herein is a liquid electrophotographic ink composition. The composition comprises a charge director; a non-polar carrier fluid comprising a polymer; and ink particles each comprising a polymeric resin mixture comprising a first polymeric resin having a first melting temperature and a second polymeric resin having a... Hewlett packard Indigo B v

Gap control

In one example, a device includes a flexible roller and an actuator to flex the roller while it is rotating to change the gap between the roller and a surface opposite the roller.... Hewlett packard Indigo B v

Forming and folding sheet portions

An example device is provided in accordance with the present disclosure, which may be used for example for producing printed articles from printed sheets on which are imposed multiple pages of a printed article to be produced. The example device comprises a sheet feeder, a sheet path for the advance... Hewlett packard Indigo B v

Electrostatic printing system with charged voltage dependent on developer voltage

An electrostatic printer comprises a charging unit, a photoconductor member, an imaging unit, a developer unit and a controller. The charging unit is to charge the photoconductor member to a charged voltage. The imaging unit is to generate a latent electrostatic image on the photoconductor member by discharging areas of... Hewlett packard Indigo B v

Measuring color and calibrating printers

Methods of measuring colours, methods of calibrating printers and printing systems for implementing the methods are disclosed. Calibration maps are printed on print media. The calibration maps have intertwined contiguous printed and non-printed areas. One or more colour signals are measured on contiguous printed areas. One or more noise signals... Hewlett packard Indigo B v

Flexible packaging material

Flexible packaging materials with electrophotographically printed images or information, and processes for preparing such flexible packaging materials are disclosed.... Hewlett packard Indigo B v

Sealing

Certain examples of seals that can move along a slit are disclosed. The seals can comprise a first leaf, a second leaf, and a biasing member to push the first leaf away from the second leaf. Also, apparatus for applying a fluid, and printing systems are described.... Hewlett packard Indigo B v

Rosette-free printing

In an example implementation, a method of rosette-free printing includes, in a printing device whose color plane misregistration is less than 15 percent of a screen ruling of a halftone screen, printing multiple color planes of a multicolor image using the halftone screen.... Hewlett packard Indigo B v

Flexible packaging material

Flexible packaging materials with electrophotographically printed images or information, and processes for preparing such flexible packaging materials are disclosed.... Hewlett packard Indigo B v

Primer composition and method

A method for determining coat weight of a transparent primer coating for liquid electrophotographic printing processes is described, in which an optical brightening agent is added to an aqueous transparent primer composition in an amount of less than 0.1 wt. % based on the total solids content of the primer... Hewlett packard Indigo B v

Liquid electrophotographic ink composition

Herein is disclosed a liquid electro photographic (LEP) printing composition comprising: a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; and a second resin component present in an amount of about 20% to about 80% by weight of total solids content... Hewlett packard Indigo B v

Imaging and printing system

According to one example, there is provided an imaging system that comprises a housing, a rotatable polygon comprising multiple mirrored facets located in the housing, a laser to generate a laser beam to shine onto the polygon mirror and to reflect onto a target, and wherein, in use, the density... Hewlett packard Indigo B v

Electrophotographic printing and glossing

Herein is disclosed a method of electrostatic printing and glossing comprising: forming a first toner image on a print substrate by electrostatically printing an electrostatic ink comprising a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; forming a second toner image... Hewlett packard Indigo B v

Electrostatic printing apparatus and intermediate transfer members

Herein is disclosed an electrostatic printing apparatus comprising: a photoconductive member having a surface on which can be created a latent electrostatic image; an intermediate transfer member comprising: a supportive portion; and an outer release layer disposed on the supportive portion comprising a base polymer matrix and an additive selected... Hewlett packard Indigo B v

Printing methods

A method for determining coat weight of a printed transparent electrophotographic composition is described, in which a calibration composition is added to a transparent liquid electrophotographic composition to produce a test composition, the calibration composition comprising a carrier liquid, a polymer resin, and at least 5 wt. % of an... Hewlett packard Indigo B v

Electrophotographic printing and foiling

Herein is disclosed a method of electrostatic printing and foiling comprising: forming a coloured toner image on a print substrate by electrostatically printing an electrostatic ink comprising a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; forming an adhesive toner image... Hewlett packard Indigo B v

Embossing dies having polymer layers

Provided is a method of manufacturing an embossing die. The method comprises mounting a drum or a plate on a support, providing information on a shape of the embossing die, printing a multitude of photopolymer drops forming a photopolymer layer upon the drum or the plate based on the provided... Hewlett packard Indigo B v

Flexible packaging material

Flexible packaging materials with electrophotographically printed images or information, and processes for preparing such flexible packaging materials are disclosed.... Hewlett packard Indigo B v

Separating liquid and gas

An apparatus for separating liquid and gas comprises a first pipe having a gas outlet at an upper first portion thereof and a liquid outlet at a lower second portion thereof. The apparatus further comprises a second pipe extending at least partly along the first pipe and comprising an inlet... Hewlett packard Indigo B v

Visualizing image registration information

In an example implementation, a method of providing image registration information in a digital printing press includes imaging a printed page on an impression drum of a digital printing press, determining image registration information from printed content on the page, and displaying a graphical visualization of the image registration information... Hewlett packard Indigo B v

Cleaning a silicon photoconductor

In an example implementation, a method of cleaning a silicon photoconductor includes contacting the silicon photoconductor with a base-peroxide solution, rinsing the silicon photoconductor with a liquid, and heating the silicon photoconductor to evaporate the liquid.... Hewlett packard Indigo B v

Lay-flat book production

Provided is a lay-flat book block production apparatus. The apparatus comprises a glue dispenser, the glue dispenser to transition between an active state in which glue is to be provided to one side of the web which is to be guided past the glue dispenser and an inactive state in... Hewlett packard Indigo B v

Binary ink developer assembly including a guard member including a conforming end having a concave shape

An example binary ink developer (BID) assembly includes a housing, a developer roller, a squeegee roller, and a guard member. The developer roller receives ink and transfers a portion of the ink to a photoconductive member. The squeegee roller rotates and regulates a film thickness of ink on the developer... Hewlett packard Indigo B v

Application of coating fluid

Examples disclosed herein relate to application of a coating fluid. Examples include an apparatus including a first coating applicator to apply a coating fluid to a plurality of first rollers; a first transfer roller in contact with the plurality of first rollers to receive coating fluid; and a media path... Hewlett packard Indigo B v

08/31/17 / #20170246896

Ultraviolet-sensitive finishing mark

Example implementations relate to a printing an image on a substrate and printing an ultraviolet-sensitive finishing mark on the substrate using ultraviolet-sensitive ink. The ultraviolet-sensitive finishing mark can be visible under ultraviolet light.... Hewlett packard Indigo B v

08/31/17 / #20170248527

Determining oxidation of photoconductor members

A method is described in which a spectrum of a surface of a photoconductor member is obtained using optical spectroscopy; and an extent of oxidation of the surface is determined based on the obtained spectrum.... Hewlett packard Indigo B v

08/31/17 / #20170248874

Electrostatic printing apparatus and intermediate transfer members

Electrostatic printing apparatus and intermediate transfer members Herein is disclosed an intermediate transfer member for use in an electrostatic printing process, the intermediate transfer member having an outer release layer comprising a polysiloxane that has been cross-linked using an addition cure process such that it contains Si—R—Si bonds, wherein R... Hewlett packard Indigo B v

08/31/17 / #20170248875

Printers

Printers comprising a plurality of imaging units are described. In an example, each imaging unit selectively deposits at least one printing substance and an intermediate transfer member cooperates with the imaging units such that, in use of the printer, a printable image may be formed thereon, the printable image comprising... Hewlett packard Indigo B v

08/17/17 / #20170235245

Liquid toner containing a low symmetry electrically conducting material for printing conductive traces

A liquid toner for printing conductive traces is provided. The liquid toner includes a carrier liquid and toner particles dispersed in the carrier liquid. The toner particles include a low symmetry electrically conducting material dispersed in a pigment.... Hewlett packard Indigo B v

08/10/17 / #20170227877

Liquid electrophotographic ink composition

A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin, suspending in the carrier fluid the pigment particles to be coated; and effecting precipitation of the polymer resin from the carrier fluid, such that a coating... Hewlett packard Indigo B v

08/10/17 / #20170227878

Liquid electrophotographic ink composition

A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin; suspending in the carrier fluid white pigment particles to be coated; and cooling the carrier fluid at a rate of 2° C./hr or less to effect... Hewlett packard Indigo B v

08/03/17 / #20170219978

Reduce merging of adjacent printing dots on a photosensitive member

A method includes forming a second set of printing dots on a photosensitive member by a printing dot applicator corresponding to image data of second portions of the image adjacent to first portions of the image. The second set of printing dots are formed on the photosensitive member after the... Hewlett packard Indigo B v

07/27/17 / #20170212455

Wet null cycle printing

In an example, a method of wetting a print blanket includes receiving a null cycle trigger during a printing session. The method also includes maintaining printing voltages on a forecast BID (binary ink developer) that has been prepared to print a next color separation onto a photoreceptor, and applying wet... Hewlett packard Indigo B v

07/20/17 / #20170205724

Electrostatic ink compositions

There is provided an electrostatic ink composition comprising chargeable particles comprising a resin and a conductive pigment; a charge director comprising a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula [R1—O—C(O)CH2CH(SO3)C(O)—O—R2]... Hewlett packard Indigo B v

07/20/17 / #20170205732

Developing sections for digital printing presses, controllers and methods

A developing section for a digital printing press includes a controller to control a development unit such that a configuration of the development unit is to be in a first state or a second state based on a determination by the controller comparing a location of a portion of the... Hewlett packard Indigo B v

07/20/17 / #20170205756

Cleaning electrophotographic printing drums

There is provided a method of cleaning an amorphous silicon electrophotographic printing drum. the method comprises contacting the amorphous silicon of the drum with a base and an oxidising agent; and then rinsing the amorphous silicon with a liquid.... Hewlett packard Indigo B v

07/20/17 / #20170206040

Generation of images

Multiple packages are manufactured by defining a package template, with at least one individualized image area, and selecting at least one image seed. For each package, an index key is selected and, based on the selected index key, a plurality of image attribute modifications are determined from within applicable ranges... Hewlett packard Indigo B v

07/13/17 / #20170197448

Print quality monitoring device for a colour printing process

A method and system for performing color print quality monitoring for a color printing process, the method includes determining a calibration distance (ZCAL) between a Spectrophotometer (140) and an associated calibration patch (310) that provides a maximum luminescence value (LMAX) detected by the Spectrophotometer. The Spectrophotometer (140) or patch distance... Hewlett packard Indigo B v

07/06/17 / #20170192372

Liquid electrophotographic ink composition

A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin; suspending in the carrier fluid white pigment particles to be coated; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid... Hewlett packard Indigo B v

06/29/17 / #20170182727

Thickness calibration of an embossing die

There is disclosed a computer program product for carrying out a method of calibrating a thickness of an embossing die, the embossing die being formed from a plurality of ink layers printed by an apparatus. According to the method, an average thickness of an ink layer printed by the apparatus... Hewlett packard Indigo B v

06/29/17 / #20170182836

Embossing die creation

An embossing die is created by printing multiple ink layers (530, 540) in superposition thereby to build up a printed relief pattern (510) in accordance with received design data specifying a design to be embossed. The design data is modified after receipt to introduce into the printed relief pattern to... Hewlett packard Indigo B v

06/08/17 / #20170160666

Print blanket bias voltage

In an example, a method of controlling voltage applied to a print blanket within a printing device includes printing a print job. During the printing, a null cycle trigger is received. In response to the trigger, a print blanket bias voltage is reduced from a print bias level to a... Hewlett packard Indigo B v

06/08/17 / #20170160676

Processing electro fluid

An apparatus to concentrate electro fluid. The apparatus comprising an electrically grounded drum, a fluid feed to provide electro fluid to the surface of the drum and a roller. The roller comprising a metal core to be electrically biased and a ceramic coating around the metal core.... Hewlett packard Indigo B v

06/08/17 / #20170160677

Contact control of print blanket to impression drum

In an example, a method of controlling voltage applied to a print blanket within a printing device includes printing a print job. During the printing, a null cycle trigger is received. In response to the trigger, contact between a print blanket and an impression drum is reduced.... Hewlett packard Indigo B v

06/08/17 / #20170160678

Print blanket temperature control

In an example, a method of controlling the temperature of a print blanket within a printing device includes printing a print job. During the printing, a pause phase start trigger is sensed. In response to sensing the pause phase start trigger, a set-point of a print blanket heating lamp is... Hewlett packard Indigo B v

05/25/17 / #20170146919

Electrostatic ink compositions

Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin, a charge director comprising a sulfosuccinate salt, and a non-polymeric, non-fatty acid having a pKa, when measured in water at 20° C., of at least 1. Also disclosed herein is a... Hewlett packard Indigo B v

05/25/17 / #20170146920

Electrostatic ink compositions

Herein is disclosed a magenta liquid electrostatic ink composition comprising chargeable particles comprising a resin, a pigment, a liquid carrier in which the chargeable particles are dispersed, and a charge director, wherein the resin is formable from polymerising alkylene monomers and methacrylic or acrylic acid monomers, the pigment is selected... Hewlett packard Indigo B v

05/18/17 / #20170139339

Electrostatic ink compositions

Herein is disclosed method of producing an electrostatic ink composition, the method comprising: mixing a pigment and a dispersant to form a pigment dispersion; wherein the pigment is acidic and the dispersant is basic or the pigment is basic and the dispersant is acidic; and then grinding the pigment dispersion... Hewlett packard Indigo B v

05/04/17 / #20170122778

Encoder disks

An encoder disk comprising at least a first detectable target and a second detectable target, which are straight and parallel, and a rotary encoder comprising such an encoder disk.... Hewlett packard Indigo B v

05/04/17 / #20170123742

Ranking print jobs based on transfer media healthy area

In an embodiment, a processor-readable medium stores code representing instructions that when executed by a processor cause the processor to access a list of print jobs for printing. The processor further determines a healthy area of a transfer media. For each job in the list, the processor calculates an image... Hewlett packard Indigo B v

04/20/17 / #20170108792

Liquid electrophotographic varnish composition

Herein is disclosed a liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a metal catalyst and/or a photo-initiator for catalysing the cross-linking; and a carrier liquid.... Hewlett packard Indigo B v

03/23/17 / #20170082941

Method and system for active decrease of ghost appearance

A method of operating a printing system includes determining whether ghosting is expected on a photoreceptor and applying power to a laser applied to the photoreceptor based on whether the ghosting is expected.... Hewlett packard Indigo B v

03/23/17 / #20170082951

Custom color ink mixing for electro photographic printing

In one example, a liquid electro photographic printing apparatus includes: multiple base color ink containers each to contain a different base color ink; multiple base color ink dispersion units each connected to a corresponding base color ink container to contain a diluted base color ink and to a corresponding base... Hewlett packard Indigo B v

02/16/17 / #20170043590

Valve

A valve comprises an orifice plate (1) having one or more orifices (4) through which a fluid may flow, and one or more piezo-electric elements (2). Each element (2) has a face positioned to contact the orifice plate at an orifice. Each element has a first state in which it... Hewlett packard Indigo B v

Patent Packs
02/16/17 / #20170043591

To calibrate a printer

An apparatus to calibrate a printer. The apparatus comprises a controller to: control deposition of white printing material on media, the white printing material having an opacity of at least 55%; control deposition of non-white printing material on the white printing material; receive data for at least one sensed characteristic... Hewlett packard Indigo B v

02/02/17 / #20170031288

Fault detection

According to one example, there is provided apparatus for detecting a fault in a printing system. The apparatus comprises a monitoring module to determine the length of a portion of an imaging member as the imaging member rotates; and indicate a fault condition when the determined length is different to... Hewlett packard Indigo B v

01/05/17 / #20170001215

To apply a coating to media

In some examples, an apparatus to apply a coating to a media includes a first roller to receive a continuous belt that is to receive a coating from a second roller and to transfer the coating to the media, the first roller having a variable dimension to provide an adjustable... Hewlett packard Indigo B v








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