摘要:
An inkjet printer has been developed that reduces the effects of show-through by depositing ink onto a cooled print medium. The inkjet printer includes a printhead and a cooler. The printhead is configured to eject ink onto an ink receiving member as the ink receiving member is transported along a portion of a media path through the inkjet printer. The cooler is positioned proximate the media path to cool the ink receiving member prior to the printhead ejecting ink onto the ink receiving member.
摘要:
An inkjet printer has been developed that reduces the effects of show-through by depositing ink onto a cooled print medium. The inkjet printer includes a printhead and a cooler. The printhead is configured to eject ink onto an ink receiving member as the ink receiving member is transported along a portion of a media path through the inkjet printer. The cooler is positioned proximate the media path to cool the ink receiving member prior to the printhead ejecting ink onto the ink receiving member.
摘要:
Methods of treating ink on a porous substrate and methods of printing onto porous substrates are provided. An exemplary embodiment of the methods of treating ink on a porous substrate includes applying a layer of ink onto a first surface of a porous substrate; irradiating the layer of ink with first radiation having a first spectrum effective to partially cure the ink layer and reduce penetration of the ink into pores of the substrate; leveling the partially-cured ink layer; and irradiating the as-leveled ink layer with second radiation to further cure the ink layer, the second radiation having a second spectrum different from the first spectrum of the first radiation.
摘要:
A system and method of applying a controlled amount of fluid to a moveable image carrying member of an electrographic printing system using a liquid toner before an image is transferred to a substrate. The amount of fluid applied may be controlled by a re-wet roller, located between the toner station and the transfer station, whose distance from the moveable image carrying member is varied along with the rotational speed and direction of the re-wet roller, according to either the roughness and porosity of the substrate or the print quality of the substrate. Alternatively, the fluid may be directly applied just to image areas of the moveable image carrying member to improve print quality.
摘要:
An apparatus for developing an image on an imageable surface with liquid developer including a housing having a chamber defined therein for holding liquid developer. A pump is provided for advancing liquid developer from the chamber of the housing to a development zone. An electrode member is provided having at least two segments electrically separated from each other by a insulating layer. The electrode member is positioned opposed from the imageable surface at a predefined distance forming the development zone therebetween. A power supply is provided for applying a electrical potential to the electrode member.
摘要:
A radiation curable ink initial line width control system includes a print head that deposits radiation curable ink to form as-deposited ink lines on a substrate. A substrate heating system heats the substrate to heat the ink and spread the ink to increase a line width of the ink. The line width of the ink is increased before the ink is contact-leveled at a contact-leveling nip. The substrate is heated to a temperature that minimizes or avoids showthrough and/or coalescence in a printed image.
摘要:
A toner developability sensor and method sense toner developability of liquid ink in an ink reservoir of a liquid ink image forming system. The toner developability sensor includes a power supply, a first electrode having at least one surface in contact with the liquid ink and connected to the power supply, and a second electrode spaced from the first electrode. When a potential difference is applied between the first and second electrodes, a developed toner layer is formed on the first electrode. A sensor senses at least one characteristic of the developed toner layer formed on the first electrode. The sensor detects characteristics of the developed toner layer that are directly related to the developability of the toner.
摘要:
A method of mixing colorants to achieve a target color includes combining individual colorants, detecting an output color of the combined colorants with a color sensing device and automatically adjusting the output color based on comparison between the detected output color and the target color. An apparatus for mixing colorants according to this method is also disclosed.
摘要:
A radiation curable ink initial line width control system includes a print head that deposits radiation curable ink to form as-deposited ink lines on a substrate. A substrate heating system heats the substrate to heat the ink and spread the ink to increase a line width of the ink. The line width of the ink is increased before the ink is contact-leveled at a contact-leveling nip. The substrate is heated to a temperature that minimizes or avoids showthrough and/or coalescence in a printed image.
摘要:
A method for adjusting fractional amounts of primary colors to be combined to substantially match a user selected color and substrate characteristics in a device adapted to color printing on a substrate. The method corrects for both the color and the reflectivity of the substrate on which the user selected color is to be printed. The method adjusts the target mixed ink transmission spectrum to compensate for the substrate characteristics. The method also identifies cases in which the target mixed ink transmission spectrum may not be compensated due to the paper's color. The method may be used to control mixing of inks in a custom color module of a marking engine; or mixing of dry toner primaries in a dry xerographic engine; or mixing of printing inks in a stand-alone ink mixing station.