Abstract:
An ink jet recording element having a support having thereon in order: a) at least one porous, ink carrier liquid receptive layer; b) a fusible, porous dye-trapping layer of fusible polymeric particles, a binder, and a dye mordant; and c) a fusible, porous ink-transporting layer of fusible, polymeric particles and a film-forming, hydrophobic binder.
Abstract:
Disclosed herein is an image-transfer medium for ink-jet printing, including a base material, and a releasing layer and a transfer layer, both, provided on the base material, wherein the transfer layer includes fine particles of a thermoplastic resin, a thermoplastic resin binder, inorganic fine particles and a coupling agent.
Abstract:
A recording liquid including a coloring material, an organic solvent to disperse or to dissolve said coloring material, water, and a calix[n]arene-p-4-sulfonic acid (where n=4-8) in the form of free acid or its metal salt. The recording liquid is very suitable for inkjet recording using plain paper as recording medium. The recording liquid shows high storage stability, excellent color reproducibility with hard blurring property of mutual colors at superposed area thereof, and high resistively for light fading, for the sake of buffering nature based by both ion-capturing and -releasing, and hydrophobic material-capturing and -releasing bestowed by above-mentioned calix compound.
Abstract:
A liquid jetting head is provided with a pressure chamber, a piezoelectric vibrator which causes pressure fluctuation to the pressure chamber and a nozzle orifice communicated with the pressure chamber. A drive signal generator generates, in every jetting period, a drive signal including a base potential, an initial and termination potential which is a drive potential higher than the base potential, and at least one ejection pulse signal for ejecting a liquid droplet from the nozzle orifice. A drive signal supplier selectively supplies the ejection pulse signal to the piezoelectric vibrator in accordance with jetting data which indicates whether a liquid jetting is performed. A jetting data storage stores the jetting data with regard to each of successive two jetting periods including a present jetting period. A vibrator potential adjuster changes a potential of the piezoelectric vibrator to the base potential when the jetting data stored in the jetting data storage indicates that the liquid jetting is not performed in a latter jetting period, and changes the potential of the piezoelectric vibrator to the drive potential before the ejection pulse is supplied when the jetting data indicates that the liquid jetting is performed in the latter jetting period.
Abstract:
A vacuum drum assembly for a printing machine has a drum with an array of passageways distributed along its length and around its periphery. The passageways permit air to flow from outside the drum to inside the drum in response to reduced air pressure inside the drum. The assembly also has an array of valve members, each valve member being movable between a closed position in which that valve member restricts at least one of the passageways and an open position in which the restriction of that passageway or those passageways is reduced. The assembly is arranged such that, when a partial area of the drum is wrapped with a sheet of material, at least some of the valves for the passageways adjacent the edges of that area are open, and the valves for the passageways which are not covered by the sheet and are not adjacent the edges of that area are closed.
Abstract:
In an inkjet printing apparatus an inkjet printhead ejects ink into a print-zone. A drive shaft, located upstream of the printhead, has a longitudinal axis, a first radius over a central length, and a second radius less than the first radius at a first recess and a second recess. Each recess is peripheral to the central length. A plurality of pinch devices stabilize the media against the drive shaft. A first guide and a second guide, spaced from the longitudinal axis, are aligned with and extend into the first recess and second recess.
Abstract:
Apparatus and methods include various means of increasing the finish gloss of a printed image that is formed on a sheet of media by a deposition device. Apparatus in accordance with the present invention include a fusing circuit that enables the image to be repeatedly exposed to the heat of a fusing device while passing the media through the deposition device only once. Apparatus in accordance with the present invention can also include a fusing device that has a single hot roller and a plurality of pressure rollers that enable the image to be passed between the hot roller and each of the respective pressure rollers in succession. A method in accordance with the present invention includes repeatedly exposing the image to a fusing device.
Abstract:
A printer having a media transport with a rigid, air-transmissive platen. A movable air-transmissive flexible web overlays the platen, and a suction device communicates with the platen to draw air through the web and through the platen, such that a sheet of media carried on the web is biased toward the platen. A second movable web below the first web limits air flow through at least a selected portion of the platen other than a portion overlaid by the sheet. The movable web may be a continuous belt, which may have two separate air-blocking regions that are positioned beyond the platen when full airflow is desired, and at least partly registered with the platen to block airflow to peripheral platen portions.
Abstract:
A thermal developing apparatus in which a photothermographic element having a latent image is interposed between a heated member and a plurality of guiding rollers and when the photothermographic element is conveyed and heated while the guiding rollers are rotated, the thermal developing is conducted, and the visible image is obtained, a plurality of guiding rollers are arranged so that the variation cycle of the radius of each guiding roller is not synchronized with each other on the photothermographichic element during the rotation of each guiding roller.
Abstract:
A method of selecting inks within an inkjet ink set for color printing includes: a) providing at least two color inks, each ink having a carrier and a pigment; b) printing the above inks onto a receiver using test images consisting of single color patches of a Dmax density (100% dot coverage); c) measuring the gloss level of each patch at a predefined specular angle; d) calculating the Relative Gloss Variability (RGV) values of the ink set based on the definition in Equation A; and e) selecting inks for the color set such that the Relative Gloss Variability (RGV) among inks is less than 10% when 60° is used as the specular angle: RGV ( % ) = ∑ I = 1 N | ( Gloss ( Imaged Area ) I - AG ) | AG / N Equation ( A ) Where AG = ∑ I = 1 N Gloss ( Imaged Area ) I N I is a variable which identifies a certain color patch used in the evaluation, N is the total number of color patches used in the evaluation.