Abstract: A printable recording media that comprises a base substrate with an image-side and a back-side and a coating composition comprising, at least, particles of metallic salt of C8-C30 alkyl acid chain or alkyl ester chain having a mean particle size (D50) above 3 ?m and having about 99.5% of the particle size distribution which is less than 80 ?m, inorganic pigment particles and/or mixture inorganic particles, and polymeric binders and/or mixture of polymeric binders, is applied to the image-side of the base substrate. Also described herein are a method for forming the printable recording media and a printing method that includes ejecting an ink composition onto the print media described herein.

Abstract: Systems, apparatuses, and methods of fluid delivery for liquid electrophotography printing. A fluid delivery apparatus includes a charged ink source, a supplemental fluid source, a working suspension tank in fluid communication with the charged ink source and the supplemental fluid source, a sensor, and an optical density control unit. The charged ink source is to store a charged ink mixture including charge directors and toner particles. The supplemental fluid source is to store a supplemental fluid including imaging oil. The working suspension tank is to store a working suspension mixture including the charge directors, the toner particles, and the imaging oil. The sensor is to monitor an optical density of print output of the liquid electrophotography printing apparatus. The optical density control unit is to determine whether to supply an uncharged ink mixture to the working suspension tank in response to the monitored optical density indicating electrical fatigue.

Abstract: A method for applying a product by roller on a surface of a substrate (112) transported horizontally with respect to an application head (111, 111?) is discloses. The method includes moving the application head (111, 111?) immediately from a lowered position of the application head (111, 111?), wherein the application roller (122, 122?) applies the product in a predetermined position of the surface of the substrate, to a raised position of the application head (111, 111?), wherein the application roller (122, 122?) does not apply product; or vice versa. An application system using the method for applying a product by roller is also disclosed.

Abstract: Disclosed is a method to mitigate deterioration of printing fluid in a tank of a printer. The method comprises: draining printing fluid from a tank of a printer, and stopping the draining before the tank is empty, wherein the printing fluid comprises solids suspended in imaging oil, filtering the printing fluid drained from the tank, to separate at least some of the solids from the imaging oil, passing the filtered imaging oil to a reservoir; and then passing imaging oil from the reservoir to the tank. Also disclosed is a printer and a system to perform the method.

Abstract: This application relates generally to a method and apparatus to deposit particles onto one or more coupons, and harvest particles from one or more coupons, which may beneficially provide a more uniform or localized distribution of particles over a specified area on each coupon. The application relates to a method and apparatus for depositing particles onto one or more coupons using a sieve. The application also relates to a method and apparatus for depositing particles onto one or more coupons using a dust storm. The particle loadings achieved on each coupon or across an individual coupon may be substantially uniform. The application further relates to a laser-based method and apparatus for transferring particles deposited at localized points on a source coupon to a different substrate for further use.

Abstract: In one aspect an apparatus for use in an electrographic printer is described. The apparatus includes a housing defining a cavity, a developer roller, a developer electrode for developing printing substance onto the developer roller, the electrode being arranged within the cavity, and a heater for heating printing substance to be developed onto the developer roller, the heater being arranged in the cavity.

Abstract: The present subject matter is directed to a composition for staining cytological material comprising a cationic dye component, a hygroscopic polyol and optionally a water-soluble solvent, water or water-miscible solvent, methods of use of the compositions. Advantageously, the present compositions do not require the use of a cover slide as is required in known staining fixatives. The compositions are able to retain cell morphology for a period of time such that a cover slide is not required. Further, the compositions do not contain hazardous levels of organic components. Preferably, the compositions consist essentially of Azure C, glycerol and optionally water. In another aspect, the present subject matter is directed to a method of characterizing a cell sample comprising contacting the cell sample with a composition comprising a dye component and a hygroscopic polyol and subjecting the sample to analysis to determine the presence or absence of abnormal cells.

Abstract: There is provided a sponge cleaning roller for cleaning an electrophotographic printing drum, the sponge of the cleaning roller having a Shore 00 hardness of about 9 or greater and a porosity of about 38 ppi or greater.

Abstract: In an example, a method includes collecting (102) print agent from a print agent reservoir to form a print agent layer on a first print agent transfer member (204). The print agent layer may be transferred (104) directly from the first print agent transfer member to a second print agent transfer member (206), where the print agent layer may be heated (106). The print agent layer may be applied (108) directly from the second print agent transfer member to a substrate.

Abstract: During a print cycle of a print apparatus, a liquid print agent including a carrier fluid is applied to a photoconductive surface. A proportion of the carrier fluid in the liquid print agent on the photoconductive surface is reduced at a first location by removably collecting a portion of the carrier fluid from the liquid print agent applied to the photoconductive surface. During a non-print cycle of the print apparatus, the removably collected portion of the carrier fluid is added to the photoconductive surface at the first location.

Abstract: In one aspect an apparatus for use in an electrographic printer is described. The apparatus includes a housing having a base, a first wall, and a second wall, wherein the housing defines a cavity. The apparatus also includes a developer roller and an ink developer electrode for developing ink to the developer roller. The apparatus also includes an ink outlet, and a gutter for directing ink in the cavity towards the ink outlet, the gutter being disposed between the first wall and second wall, and between the developer roller and base. The gutter has a floor, a first side, and a second side, each extending along a length of the gutter. The floor slopes towards the ink outlet to direct ink towards the ink outlet, and the floor and sides of the gutter form a curve transverse to the length of the gutter to direct ink towards the floor.

Abstract: In an example, charged particles suspended in a non-conductive fluid are fed to a transfer device. A width of a charged particles layer of uniform density on a surface of the transfer device is controlled. Charged particles are transferred from the charged particles layer to a photo imaging plate of a liquid electro-photographic printing system.

Abstract: In one example in accordance with the present disclosure, a fluid application device is described. The device includes an application roller to deposit a fluid containing metallic particles on a surface. A squeegee roller of the device forms a first nip with the roller and a cleaner roller forms a second nip with the application roller. A first resistive coating is disposed on a surface of the application roller.

Abstract: An example apparatus includes a conveyor. The apparatus also includes a developer unit. The developer unit is to concentrate printing liquid. The developer unit also is to deliver the printing liquid to the conveyor as a thick layer on the conveyor.

Abstract: An example method includes concentrating first printing liquid on a conveyor. Concentrating the first printing liquid produces liquid carrier having a low non-volatile solid concentration. The method also includes concentrating the liquid carrier having the low non-volatile solid concentration on a developer roller. Concentrating the liquid carrier having the low non-volatile solid concentration produces liquid carrier substantially free of non-volatile solids. The method also includes delivering the liquid carrier substantially free of non-volatile solids to a storage vessel.

Abstract: A charging member for an electrophotographic apparatus in which image defects caused by bleeding of an ion-conductive agent are suppressed and excellent chargeability can be maintained. In a charging member for an electrophotographic apparatus including a base layer composed of a conductive rubber elastomer and a surface layer, the base layer is a cross-linked body of a conductive rubber composition containing (a) a cross-linkable rubber, (b) a cross-linking agent, (c) an ion-conductive agent represented by a general formula (1) below, and (d) carbon black. Here, R1 and R2 are allyl groups, R3 is a methyl group or an ethyl group, and R4 is a linear alkyl group having a carbon number of 6-8. X? is a sulfonate anion having a fluorine atom or a bis(sulfonyl) imide anion having a fluorine atom.

Abstract: In one aspect an apparatus for use in an electrographic printer includes a tray defining a cavity, the tray having an internal surface, and an ink developer electrode disposed in the cavity for developing an ink. There is a first layer disposed on the internal surface, the first layer including a dielectric material, and a second layer disposed on the first layer, the second layer adhering to the first layer and being resistant to the adhesion of ink. In another aspect manufacturing such apparatus includes applying respective polymer precursor compositions to form the two layers and crosslinking the second polymer composition.

Abstract: The present disclosure relates to an inkjet composition comprising a curable polyurethane dispersion and an aqueous carrier.

Abstract: Example implementations provide a method of controlling an ink developer used in electro-photography; the method comprising, following cessation of printing, varying a plurality of voltages associated with movement of ink within the ink developer at temporally disparate times.

Abstract: In an example, a method includes applying a liquid print agent comprising a carrier fluid to a photoconductive surface and reducing a proportion of the carrier fluid in the liquid print agent on the photoconductive surface at a first location during a print cycle of a print apparatus. The method may further include, during a non-print cycle of the print apparatus, adding carrier fluid to the photoconductive surface at the first location.

Abstract: An image forming apparatus executes a first obtain mode to obtain a resistance value of a developing roller when a potential difference between the developing roller and an electroconductive roller is generated by a second voltage generator when the developing roller carries a reference liquid developer having a known toner concentration. A second obtain mode is executed to obtain a toner concentration of the liquid developer on a surface of the developing roller based on the obtained resistance value and a detection result when a potential difference between the developing roller and the electroconductive roller is generated by the second voltage generator when the liquid developer is applied to the developing roller. During image formation, the controller controls a first voltage generator based on the obtained toner concentration so the toner concentration of the liquid developer on the surface of the developing roller is a target value.

Abstract: An example system includes a power supply. The power supply is electrically coupled to an electrode, a developer roller, and a cleaner roller. The system also includes a controller. The controller is to instruct the power supply to reduce, at a first time, a magnitude of an electrode voltage supplied to the electrode. The controller also is to instruct the power supply to set, at a second time, a developer roller voltage and a cleaner roller voltage each to about a wet null voltage.

Abstract: An image forming apparatus includes a draw-up member that draws a liquid developer containing oil and toner up from a storage part in which the liquid developer is stored while rotating; a cylindrical member that is disposed so as to face the draw-up member, receives the liquid developer from the draw-up member while rotating, and has a circumferential surface on which a film of the liquid developer is formed, the cylindrical member having an elastic part having a circular cross section and a coating film that covers the elastic part and is made of a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether; and a formation member having a circumferential surface on which an image is formed by the liquid developer received by the cylindrical member.

Abstract: An example apparatus includes a conveyor. The apparatus also includes a first developer unit. The first developer unit is to concentrate first printing liquid. The first developer unit also is to deliver the first printing liquid to the conveyor. The apparatus also includes a second developer unit. The second developer unit is to concentrate second printing liquid. The second developer also is to deliver the second printing liquid to the conveyor to form a thick layer of printing liquid comprising the first and second printing liquid.

Abstract: A developing device includes a rotatable liquid developer carrying member, a developer container, an electrode opposed to the developer carrying member with a predetermined gap therebetween to form an electric field, and an urging roller provided downstream of the electrode and upstream of a developing position to urge the developer carrying member. An amount of toner on the developer carrying member per unit area in a region downstream of the urging roller and upstream of the developing position with respect to the rotational moving direction is not less than 50% of an amount of the toner on the developer carrying member per unit area in a region interposed between the electrode and the developer carrying member.

Abstract: A measuring device that measures the level of fluid in a tank, for example a level of an aqueous urea solution in a tank for catalytic converters of combustion engines. The measuring means include: at least one sensor including a capacitive element electrically coupled to an oscillator configured to deliver a signal Si whose frequency FiPAD is a function of the capacitance of the capacitive element; at least one sensor being intended to be disposed outside of the tank, so that the capacitance of the capacitive element varies based on the level n of the fluid, when the level is comprised between a first threshold hi-min and a second threshold hi-max; a processing module, coupled to at least one sensor, and configured to determine the level n of fluid in the tank based on the frequency of the signal Si.

Abstract: An image forming apparatus includes an image bearing member to form a toner image on a recording material with a liquid developer containing a toner and a carrier liquid, wherein the carrier liquid contains a first substance, charged to an opposite polarity to a charge polarity of the toner, for imparting an electrical polarity to the toner, and a second substance, higher in volume resistivity than the first substance, a cleaning portion to collect the liquid developer remaining on the image bearing member after the toner image is transferred onto the recording material, a toner separating device to separate the collected liquid developer into the toner and the carrier liquid, and a carrier separating device to separate the carrier liquid into the carrier liquid containing the first substance and the carrier liquid containing the second substance by applying an electric field to the carrier liquid.

Abstract: A method of electrostatic printing may include forming a latent electrostatic image on a surface and transferring a first volume of a charged toner to the latent electrostatic image on the surface. The method may also include transferring a second volume of a charged toner to the surface, such that a toner image including the first volume of charged toner and the second volume of charged toner is formed on the surface, the second volume of charged toner being disposed on the first volume of charged toner. The method may also include transferring the image to a print substrate.

Abstract: An image forming apparatus includes an image bearing member, a developing device developing an electrostatic latent image with a liquid developer containing toner and a liquid carrier, a carrier storing container storing the carrier, and a mixer to mix the toner and the carrier to form the liquid developer to be supplied to the developing device, wherein the liquid developer has a predetermined toner ratio. A first discharging portion on the carrier storing container discharges the carrier toward the mixer, a collecting mechanism collects the carrier from the developing device into the carrier storing container, and a second discharging portion on the carrier storing container discharges the carrier toward a carrier collecting container configured to collect the carrier. The carrier collecting container is detachably mountable to the carrier storing container.

Abstract: A charge control agent-silicone oil composition includes a silicone oil and a charge control agent, the charge control agent being covalently linked to the silicone oil or is homogenously dispersed in the silicone oil as a dispersion. A method includes reacting an electrophilically-activated silicone oil with a charge control agent, thereby covalently linking the charge control agent to the silicone oil to provide a charge control agent-functionalized silicone oil. A bio-based toner includes a resin blend that includes a petroleum based resin and a bio-based resin, a charge control agent-silicone oil, a colorant, and a silica and/or titania additive, the toner having a bio-content of greater than about 25% by weight and does not exhibit moisture sensitivity.

Abstract: A technique facilitates the study of complex fracture networks. A slot manifold is constructed with a system of branched thin channels, e.g. slots, which are joined at intersections. Fluid is flowed through the system of branched thin channels and through an intersection or intersections joining the channels in a manner which enables evaluation of fluid flow. A flow distribution device is used to allow or block flow of the fluid along specific branches of the system of branched thin channels to facilitate evaluation of fluid flow as a fluid moves through various angular changes and/or flow gap width changes from one channel to another.

Abstract: An application device includes a conveyer to convey a recording medium, an application roller to apply a treatment liquid to the recording medium, a pressure roller to sandwich the recording medium with the application roller to press the recording medium against the application roller, and a winding member to form a curved conveying path to have the recording medium curved along a conveying direction to wind the recording medium around the pressure roller. The pressure roller comes in contact with the application roller when applying the treatment liquid and separates from the application roller when not applying the treatment liquid. A predetermined positional relationship is maintained between the pressure roller and the winding member while the pressure roller moves close to the application roller to be in contact with the application roller, or the pressure roller moves away from the application roller to be separated from the application roller.

Abstract: A method and a developer station are described. The method and developer station being operable to adapt the inking of an image substrate. The method including applying a voltage across a developer layer on the developer element of the developer station. The application of the voltage causing a current to flow through the developer layer, where the current can be measured. The an indicator of a thickness of the developer layer and/or of the toner quantity in the developer layer is generated based on the voltage and/or the current. The indicator can be used to adjust the inking of the image substrate. For example, the current can be compared to a characteristic curve to generate the indicator.

Abstract: Apparatus is described which, in use, applies a thin film of a wetting agent, such as water or a water-based solution, onto paper or other print medium before applying a liquid toner. The wetting agent is applied at a predetermined distance from an image transfer area. The wetting agent acts to promote adhesion of the liquid toner to the print medium. The adhesion of the liquid toner to the print medium is further improved by supplying the wetting agent at a temperature higher than room temperature.

Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).

Abstract: The present invention includes a compressor for generating compressed air for separating a sheet from a fixing portion. By using the compressed air generated by the compressor, an image forming portion, more specifically, for example, a charger, is cleaned.

Abstract: A liquid supply device includes a reservoir that stores a liquid developer, a rotating supply member that holds a portion of the liquid developer in the reservoir in concave sections formed in a surface, and supplies the liquid developer to a target supply member, and a regulating member having an edge portion which is positioned on a lower side in a gravitational direction than a liquid surface of the liquid developer stored in the reservoir, and a lower surface of the regulating member contacts with the liquid developer in the reservoir, the regulating member regulating an amount of a liquid developer held on a surface of the rotating supply member by contacting with the rotating supply member at a position where a surface of the rotating supply member moves from a lower side to an upper side in the gravitational direction.

Abstract: In a method to adjust print quality of print images in an electrophoretic digital printer with at least one print group, the print group generates charge images of the print images. The charge images are developed with a developer station into toner images using liquid developer having carrier fluid and toner. The toner images are transfer-printed onto a carrier medium in a transfer station. A first control marking is generated on the recording medium with elements of the first control marking being aligned transverse to a printing direction. A shape of the elements of the first control marking is measured to generate a first measurement signal. The first measurement signal is compared with a predetermined nominal value, and given a difference, an adjustment signal is generated via which an amount of the carrier fluid in the liquid developer is modified so that the first measurement signal approaches the predetermined nominal value.

Abstract: Described herein is a method for electrostatic printing including: (i) providing an ink composition having: a hydrocarbon carrier liquid and particles includes a resin and a colorant, and wherein the ink composition contains less than 0.3 mg of charge director per g of solids in the ink composition; (ii) adding a charge director to the ink composition, such that the total amount of charge director in the ink composition is at least 0.6 mg per g of solids in the ink composition, and, (iii) within a predetermined time of adding the charge director, printing the ink onto a print medium in an electrostatic printing process, wherein the predetermined time is 90 minutes or less.

Abstract: Printers, methods, and apparatus to form an image on a substrate are disclosed. An example apparatus to form an image on a print substrate includes an applicator to apply a first material, an ink developer to apply a plurality of ink particles, and a transfer cylinder to transfer the ink particles and the first material to the print substrate to form an image and a coating.

Abstract: An oil routing system has a first fluid transport device to transport clean oil from an oil recycling apparatus of an imaging system to a first storage tank, the oil having been recycled after use in the imaging system by the recycling apparatus, a second fluid transport device to transport clean oil to a second storage tank, and a third fluid transport device. The clean oil is to be stored in the first storage tank and second storage tank as clean oil, and the third fluid transport device to return clean oil from the first storage tank to the imaging system for reuse, wherein of the first and second storage tanks, the oil routing system routes clean oil to the imaging system for reuse only from the first storage tank.

Abstract: Provided is a liquid developer supply device including plural accommodation tubs that respectively accommodate a liquid developer, a high concentration liquid developer, a dilution liquid and a standard concentration liquid developer, a first detection section that detects a solid component concentration of the liquid developer, and an amount of the liquid developer that is accommodated in the accommodation tubs, and a control section that controls the solid component concentration of the liquid developer to within the concentration range by supplying at least one of the high concentration liquid developer and the dilution liquid to an accommodation tub in which the liquid developer is accommodated based on detection results that are detected by the first detection section, and controls the amount of the liquid developer to greater than or equal to a predetermined amount by supplying the standard concentration liquid developer.

Abstract: In the present wet-type image formation apparatus, when setting a standard image formation condition, a control unit adjusts both a conveyance amount of toner and a charge amount of the toner in order to obtain a predetermined developing characteristic. During normal image formation, the control unit obtains the image density of a patch image formed at a high contrast potential and the image density of a patch image formed at a low contrast potential, adjusts the conveyance amount of the toner when the image density of the patch image formed at the high contrast potential is varied from the developing characteristic for the standard image formation condition, and adjusts the charge amount of the toner when the image density of the patch image formed at the low contrast potential is varied from the developing characteristic for the standard image formation condition.

Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).

Abstract: A printing system utilizing inks with high solids content includes a mixing unit for receiving a high solids content ink and producing a concentrated ink and an interim tank for receiving the concentrated ink from the mixing unit. An ink tank receives the concentrated ink from the interim tank and produces printing ink. An liquid electro-photographic print engine receives the printing ink from the ink tank. A fluid return line is connected between the mixing unit and at least one of the interim tank and the ink tank, the mixing unit receiving fluid from at least one of the interim tank and the ink tank and mixing the fluid with the high solids content ink. A method for liquid electro photographic printing using high solid content ink is also provided.

Abstract: An image forming method includes forming an unfixed toner image on a recording medium using a toner that contains a carboxyl group-containing resin having a carboxyl group and an oxazoline group-containing resin having an oxazoline group, fixing the unfixed toner image to the recording medium to form a fixed toner image, and performing a heat treatment on the fixed toner image at a temperature higher than or equal to a fixing temperature.

Abstract: Disclosed herein is a method for electrostatic printing, wherein the method comprises (a) providing an ink composition comprising particles comprising a resin, wherein the ink composition contains less than 0.3 mg of charge director per g of solids in the ink composition; (b) passing the ink composition between a first electrode and a developer roller, wherein sufficient potential is applied between the developer roller and the electrode such that the resin particles are charged and adhere to the developer roller; (c) transferring at least some of the particles from the developer roller to a photoimaging plate to form an image on the photoimaging plate; and (d) transferring the image from the photoimaging plate to a print medium. Also disclosed here is an apparatus for carrying out the method, and a print medium printed using the method.

Abstract: A system for applying liquid toner to a developing member in a digital printer. The system includes a reservoir for storing liquid toner, a feed member and a developing member. The feed member is arranged to rotate to transfer liquid toner from the reservoir to the developing member. The system includes a feed assist member. The feed member is arranged for rotating in contact with the feed assist member and making contact with the feed assist member along a contact area which is located, when the system is operational, in the liquid toner in the reservoir. The feed assist member is provided with a compressible contact portion arranged for being compressed in the contact area between the feed member and the feed assist member.

Abstract: Printers, methods, and apparatus to form an image on a substrate are disclosed. An example apparatus to form an image on a print substrate includes an applicator to apply a first material, an ink developer to apply a plurality of ink particles, and a transfer cylinder to transfer the ink particles and the first material to a print substrate to form an image and a coating.

Abstract: An image forming apparatus includes an image carrier, a charging unit, an electrostatic latent image forming unit, a developing unit that contains a liquid developer containing a toner and a carrier solution and that develops an electrostatic latent image with the liquid developer to form a toner image on the surface of the image carrier, a transfer unit that transfers the toner image onto a recording medium, and a fixing unit that includes at least one pair of first and second rotating members that form a nip between the first and second rotating members. The following condition (A) is satisfied: the amount of the carrier solution on the surface of the toner image is about 0.7 g/m2 or less during passing of the recording medium through the nip of the most-downstream pair of the at least one rotating-member pair in the leading direction of the recording medium.