摘要:
A leveling and spreading system has been developed that enables the speed and position of the web to be determined from a sensor on a first roller. In a duplex print process, the first roller also reduces a temperature of the media web and an ink image printed in the first side print operation to within a first predetermined temperature range. A second roller modulates the temperature of the media web and ink ejected onto the media web immediately before the web enters the leveling and spreading system to within a second predetermined temperature range to enable uniformity of the ink and web temperatures for spreading the ink in a nip formed with a third roller.
摘要:
A leveling and spreading system has been developed that enables the speed and position of the web to be determined from a sensor on a first roller. In a duplex print process, the first roller also reduces a temperature of the media web and an ink image printed in the first side print operation to within a first predetermined temperature range. A second roller modulates the temperature of the media web and ink ejected onto the media web immediately before the web enters the leveling and spreading system to within a second predetermined temperature range to enable uniformity of the ink and web temperatures for spreading the ink in a nip formed with a third roller.
摘要:
A method for measuring Side 1 to Side 2 image on paper misregistration includes using a series of lines printed on both sides of a substrate, such as, paper. The paper is passed in front of an in-line spectrophotometer or densitometer. The amount of image “show through” is measured and correlated to an amount of misregistration.
摘要:
A xerographic system (8) includes a moving photoreceptor (10) and multiple toner development systems (12, 14) arranged to selectively dispose regions of toner on the moving photoreceptor. A toner density sensor (40) is arranged to measure toner density on the moving photoreceptor over a sensor area (A). A toner coverage monitor (64) operatively connected with the toner density sensor (40) monitors toner coverage based on measurements by the toner density sensor of toner coverage calibration regions disposed on the moving photoreceptor by the multiple toner development systems. A spatial registration monitor (66) also operatively connected with the toner density sensor (40) monitors spatial registration of the multiple toner development systems based on measurements by the toner density sensor of spatial registration calibration regions disposed on the moving photoreceptor by the multiple toner development systems.
摘要:
Disclosed herein is reference component for a sensor. The reference component comprises a calibration surface and an integrated circuit. The integrated circuit often contains a digital representation of calibration surface properties. A corresponding sensing system, printing system, method of communicating calibration data, and sensor calibration method also are disclosed.
摘要:
In a web printer, tension on the moving web is controlled by monitoring the tension on the web between two rollers and selectively operating an actuator driving the second roller to restore the tension to an acceptable range. The operation of the actuator includes modulating the speed at which the second roller is driven.
摘要:
An inkjet printer is configured to reduce the settling of magnetic particles in magnetic ink. The inkjet printer is configured to eject magnetic ink and black ink in areas where the corresponding image data only has black ink pixels. The printing of the magnetic ink in the black ink areas helps prevent the magnetic particles in the magnetic ink from settling.
摘要:
In a web printer, tension on the moving web is controlled by monitoring the tension on the web between two rollers and selectively operating an actuator driving the second roller to restore the tension to an acceptable range. The operation of the actuator includes modulating the speed at which the second roller is driven.
摘要:
A media handling device includes sensing means disposed in a media elevator that is movable in a generally-vertical travel path proximate to a generally-fixed surface. The sensing means detects a recorded information that is disposed in the surface. The resulting detected information is used to identify the media elevator's current position. Also, another media handling device includes a recorded information disposed in a movable media elevator. Sensing means are fixed proximate to a generally-vertical media elevator travel path. The recorded information is sensed and the resulting detected information is used to identify the media elevator's current position.
摘要:
A system is disclosed for measuring the crystallization of crystalline-amorphous mixtures. The system includes a sample holder. and a heating apparatus to melt a ink composition and to keep the melted ink composition at a first specified temperature for a first period of time. The system includes a cooling apparatus to receive the melted ink composition, to cool the melted ink composition and to maintain the cooled ink composition at a second specified temperature. The system includes a microscope and a video recording device to capture images of the cooled ink composition for a second period of time A video processing computer includes a memory, a processor and software instructions and the software instructions causes the computer to extract crystallization parameters about the cooled ink composition from the captured images. The crystallization parameters identify fast solidifying crystalline inks that have a short time duration from onset of crystallization until crystallization.