Abstract: A centralized device for the distribution and discharge of air causing the evaporation of a carrier in a number of user installations each having an intake channel and a discharge channel, comprising a single manifold for the reception, delivery and discharge of air-carrier mixture from and to the installations and a discharge fan connected to said manifold, and comprising for each installation: a device for air supply, connected to the single manifold and having a fresh air suction channel and an air supply channel, a fan connected to the air supply device, a heat exchanger connected to the fan and to the intake channel of the installation, a discharge device connected to the discharge channel of the installation and to the manifold and comprising a discharge channel, and a recirculation device comprising a recirculation channel connected to the air supply device and to the discharge device.

Abstract: A method for drying printing ink containing an inactive active substance enclosed before drying in a reaction-inhibited form in a transport substance, for accelerating the drying of the printing ink on a print medium, includes applying the printing ink to a print medium being dried at a reaction site by supplying energy to the printing ink, and releasing the active substance by an energy supply from the transport substance at the reaction site for activation. A printing ink includes an active substance enclosed before drying in a reaction-inhibited form in a transport substance, for accelerating the drying of the printing ink on a print medium. The active substance is releasable during the drying by an energy supply from the transport substance at the reaction site.

Abstract: A printing device system comprises a printing roller that has a blanket adhered to an outer surface thereof. The printing device system further comprises a drying device that dries the blanket of the printing roller.

Abstract: A vacuum belt conveyor for transferring a web threading tail in a web manufacturing machine has a frame construction (15) and an air permeable belt loop (20), which is arranged around rolls (16, 17). The vacuum belt conveyor also has a first vacuum means (22) for creating a vacuum effect for the part of the belt loop (20) that transports the web threading tail (14) and a second vacuum means (23) for creating a vacuum effect in connection with the first roll (16). The second vacuum means (23) is arranged in the frame construction (15) for creating a vacuum to be introduced to the first roll (16) inside the belt loop (20).

Abstract: A printing system includes a first printing machine that is provided in the form of a newspaper printing machine and which comprises at least two first printing units that are provided in the form of printing towers and with a number of printing machines arranged one above the other for effecting double-sided printing of a substrate in multiple colors. A first folding funnel is arranged in a machine exit of these first printing units. A second printing machine is provided with at least one second printing unit and with a dryer that is situated in the machine exit of the second printing unit. The at least one second printing unit is positioned with respect to its printing location, and when viewed from above, is arranged next to the machine exit of the first printing units provided in the form of printing towers.

Abstract: A printing press capable of expediting the drying of ink printed on a sheet and facilitating maintenance is provided. The printing press is characterized by including: an impression cylinder for transferring ink onto printing paper (P) during transport of the printing paper (P) there through; an transfer cylinder for transporting the printing paper (P) on which the ink has been transferred; a drying part for drying the ink transferred on the printing paper (P); and a support part for supporting the drying part so that it can rotate around a rotation axis extending parallel to the rotation axis of the impression cylinder, thereby bringing the drying part close to and away from the impression cylinder.

Abstract: A method for drying a printing ink (114) on a printing substrate (14) in a printing press (30), and a printing press (30). The printing substrate (14) is moved along a path (16) through the printing press (30) and printed on by at least one printing ink (114) at a first position (18) of the path (16). At a second position (124) of the path (16), in a conditioning apparatus, a treatment agent (118) is applied to the printing substrate (14) to accelerate the drying of the printing ink (114) on the printing substrate (14) and includes, in particular, an infrared absorber which has an absorption wavelength that is essentially resonant to the wavelength of the light (12) of the radiant energy source (10). The printing substrate (14) may be dried by the action of radiant energy at a chronologically later point in time, at at least one third position (116) of the path (16), by a drying device, in particular by a narrow-band radiant energy source (10).

Abstract: A device for producing a coating on printed products from a printing press is provided. The coating device can be actuated digitally via printing image data thereby allowing the coating motif to be designed in a variable manner The coating device can include an inkjet printer in the form of an inkjet head array or an inkjet head bar acting as a varnishing unit that operates line-by-line on large-format printing material. The coating device can also be integrated in a rotary press having a varnishing unit for coating a printing material that has been processed in the printing press. The coating device can also be integrated with a dryer. The printing material can be passed under the outlet openings of the inkjet heads and the dryer can be arranged directly after the inkjet printer in the transport direction of the printing material in order to dry the liquid coating material on the printing material after the application.

Abstract: In a printing press equipped with a UV lamp for drying UV ink printed on a sheet transported by a transfer cylinder and a delivery cylinder, the UV lamp is accommodated within each of the transfer cylinder and the delivery cylinder, and is supported to be non-pivotable with respect to frames and immovable in the axial direction of the cylinder when the printing press is in operation.

Abstract: A pad printing machine designed to doubly or multiply print an object. An object support is or can be positioned in stationary manner, at least one pad carrier carrying at least one pad is configured in displaceable manner relative to the stationary object support, and a drying element drying the printing ink on the object to be printed is configured in displaceable manner relative to the stationary object support.

Abstract: In one embodiment, a system and a method pertain to calculating a number of dryer passes that will be used to dry ink applied to print media, the number of dryer passes being calculated relative to a current dryer temperature, applying ink to the print media, and drying the applied ink with the dryer using the calculated number of dryer passes without first waiting for the dryer to reach its normal operating temperature.

Abstract: The invention provides for a wallpaper printer having a cabinet built around a frame, the cabinet configured to receive replaceable ink reservoirs and cartridges of blank wallpaper. The printer also includes pilot guides for guiding the blank wallpaper fed from the cartridges via a media path defined in the cabinet past a pagewidth printhead for printing images onto the blank wallpaper, and a dryer module configured to dry the printed wallpaper. The printer also has a cutter module for cutting the printed wallpaper before the printed wallpaper is fed into a container which stores the wallpaper in a roll.

Abstract: A printing press and a method of drying printed or varnished sheets in a printing press include heating printed and/or varnished sheets, before the sheets enter a dryer, to a temperature higher than the ambient temperature, through the use of a heatable impression cylinder in the last printing and/or varnishing unit upstream of the thermal dryer device.

Abstract: In order to specify a conditioning device for pages and/or printing sheets, in particular printed sheets (6), which in particular is part of a collecting and delivering device (1) for collecting and stacking printed sheets (6) and/or pages suspended on supply rolls, preferably from inkjet printers (2), having means for preventing impairment of the quality of the characters or symbols printed on the pages and/or printed sheets (6) because of incompletely dried ink, in which the stacking of printed sheets (6) and/or pages is made possible without impairment to quality in a manner which is rapid and technically as simple as possible, in order to prevent impairment to quality, the conditioning device is to have a heating module (4) having at least one heating roll (11) provided with a heating element.

Abstract: A wallpaper printer includes a support frame. A cabinet assembly is mounted on the support frame. A drying module is operatively mountable with respect to the support frame and defines a first chamber and a second drying chamber. A heating element is positioned within the first chamber. At least one fan is operatively positioned with respect to the first chamber to force air past the heating element. The first chamber is configured to direct the heated air through an opening into a second drying chamber. The drying module includes a motorized door for opening and closing the opening. The drying module is configured so that, in use, the second drying chamber receives printed media via the opening. The drying module further includes at least one circulation duct to transfer at least a portion of the heated air from the second drying chamber towards the at least one fan.

Abstract: An air blowing device for a printing press includes a plate cylinder, blanket cylinder, impression cylinder, air blowing equipment, air suction equipment, and cover. The plate cylinder is rotatably supported. Ink from an inking device and dampening water from a dampening device are supplied to the outer surface of the plate cylinder. The blanket cylinder is rotatably supported in contact with the plate cylinder. The impression cylinder is rotatably supported in contact with the blanket cylinder and cooperates with the blanket cylinder to print on a printing target body under conveyance. The air blowing equipment discharges air from one end side toward the other end side of the blanket cylinder. The air suction equipment takes in air, discharged from the air blowing equipment, at the other end side of the blanket cylinder. The cover forms an air passage extending from the air blowing equipment to the air suction equipment in an axial direction of the blanket cylinder.

Abstract: A dryer is used for drying a web of material. The dryer includes a passage duct for the material web. Drying takes place within this passage duct which includes at least one straight section. The dryer is disposed on a printing group which includes vertical web guidance. The passage duct straight section is essentially horizontal and receives the web of material delivered to it by the printing group. The passage duct is comprised of at least two sections through which the web of material travels in opposite directions.

Abstract: An ink proofer arrangement includes an ink proofer tool, a cylindrical drum roller, a drive motor adapted to rotate the roller and a first movable mounting assembly to retain the ink proofer tool adjacent to and in a non-contact position with the roller, a first variable pressure assembly coupled to the mounting assembly and adapted to move the ink proofer tool between a contact with pressure position and a non-contact position with the roller. The ink proofer arrangement also includes a UV light source positioned downstream of the ink proofer tool to more quickly and uniformly dry the inks on the proof substrate. The UV light source may be pivotable to permit access to the proof substrate. The UV light source may be selectively positionable at different distances from the ink proofer tool so as to provide for adjustability of a dwell time for the proof.

Abstract: An electrostatic printing apparatus according to the present invention rubs powdery ink into a screen having a predetermined printed pattern formed therein, and applies a voltage between the screen and an object so as to attach the powdery ink to the object. A plurality of screens (34a-34d) are provided so that the plurality of screens are movable to a position located above the object (1). The plurality of screens (34a-34d) are provided so as to be rotatable about a shaft (46). The screens (34a-34d) are rotated about the shaft (46) to move the screens (34a-34d) to the position located above the object (1).

Abstract: A printing press, in particular a sheet-fed offset printing press, includes at least one control device, a plurality of printing units, one or more varnishing units, and one or more dryers. Variables determining a dryness of the printing material are determined and used to optimize the drying process. For that purpose, the important material streams influencing the drying process are determined at least for the region of the printing press that contains the drying device(s).

Abstract: An apparatus for drying sheets in a sheet-fed printing press includes a hot air dryer having a hot-air outflow temperature which is at least 300° C. A sheet-fed printing press having the apparatus is also provided.

Abstract: Drying equipment to aid drying of a web of freshly printed media, the equipment having a feed path along which the freshly printed web is fed by a drive means, and a drying fluid supply means that directs drying fluid across the web along the extent of the feed path, whereby the drive means drives the media at a speed that provides the desired degree of drying for the length of the feed path and particular drying fluid used.

Abstract: To allow continuous paper to be printed a plurality of times with a time difference by ink jet printer equipment and dried each time of printing while preventing condensation from occurring on an ink discharge surface of print head at and after the second time of printing, there is provided a printing apparatus comprising: a plurality of trains of printing units each of which has print heads arranged along a direction in which a continuous sheet of paper travels and which are arranged parallel to one another as shifted mutually in position in a direction of width of the continuous sheet of paper; a dryer section in which a plurality of continuous sheets of paper from the plural printing unit trains can travel as mutually shifted in position in a direction of width of the continuous sheet of paper; a cooling roller unit disposed downstream of the dryer section and having a cooling roller on which the plurality of continuous sheets of paper from the dryer section can be wound as mutually shifted in position in

Abstract: A drying system for use in a printing system, the drying system comprising: an heating element provided within a first chamber; at least one fan positioned to force air past the heating element; the first chamber adapted to direct the heated air through an opening into a second drying chamber; the second drying chamber receiving subsequent portions of a printed media web passed into the second drying chamber through the opening; and, at least one circulation duct provided to transfer at least a portion of the heated air from the second drying chamber to near the at least one fan.

Abstract: A printing system including a least two printheads, a first one of the printheads printing a first material and a second one of the printheads printing a second material, the first material being cured by a first method and the second material being cured by a second method and wherein the first and second methods are different.

Abstract: An apparatus and method of treating a recording element are provided. The apparatus includes a carrier removal station adapted to remove a predetermined percentage of carrier present in the recording element. A converting station is positioned downstream from the carrier removal station and is adapted to increase a durability characteristic of the recording element. A controller is electrically connected to at least one of the carrier removal station and the converting station so that an operating parameter of at least one of the carrier removal station and the converting station is individually adjustable.

Abstract: In a dry air blowing plate, rows of dry air outlets are arranged at given intervals in a transport direction of a photosensitive material. The interval between the dry air outlets within the row is narrower in a front zone of the dry air blowing plate that is close to a dry air inlet, whereas the interval is wider in a rear zone of the dry air blowing plate that is away from the dry air inlet. In the front zone, the velocity of dry air is lower but the aperture rate per unit area is larger. On the other hand, in the rear zone, the velocity of dry air is higher but the aperture rate is smaller. As a result, the volume of blown dry air is almost the same throughout an external surface of the dry air blowing plate, so the dry air is evenly blown to a surface of a photosensitive material.

Abstract: A rotary press is provided that prevents a print from contamination with a color different from a printing color. The rotary press comprising a printing unit made of a set of printing cylinders such as plate and blanket cylinders or plate and impression cylinders for printing paper; and a dryer disposed downstream of the printing unit for drying the paper printed, has a guide roller included therein for guiding the printed paper from the printing unit into the dryer wherein the guide roller has a diameter which is equal to, or a an integral multiple of, a diameter of a printing cylinder in the printing unit and is adapted to rotate synchronously with the printing cylinder and at a peripheral speed that is identical to that at which the printing cylinder is rotated.

Abstract: This invention provides a method for aqueous multicolor gravure printing which can print at a high speed without color drift, which is formed of plural printing unit processes, each of which contains a printing process, a drying process and a cooling process, wherein the quantity of heat supplied in the drying process in each printing unit is removed in the cooling process to render the temperature of the printed web uniform before the next printing process, and an apparatus therefor.

Abstract: A method and apparatus are provided for reducing the stable lamp standby power to the order of 5% of nominal full power in order to reduce the effects of heat from the lamp on a substrate during production downtime. In particular, a power controller changes the operating voltage and current of the lamp, and controls the temperature of the lamp in order to maintain stable lamp operation at the changed voltage and current.

Abstract: Disclosed are a printing process employing a printing press comprising a plate cylinder and a blanket cylinder, and employing a first printing plate material and a second printing plate material each material comprising a hydrophilic support and provided thereon, an image formation layer, the image formation layer at non-image portions being capable of being removed with dampening water or printing ink, the process comprising the steps of (a) mounting the first printing plate material on the plate cylinder; (b) carrying out printing by supplying dampening water and printing ink to the first printing plate material, (c) then washing the surface of the blanket cylinder with a cleaning solution; d) drying the washed surface of the blanket cylinder; (e) dismounting the first printing plate material from the plate cylinder; (f) mounting the second printing plate material on the plate cylinder, and (g) carrying out printing after the step (d).

Abstract: A printing apparatus (10) for printing an image on a receiving substrate (20) including ink application means (11) for imagewise applying liquid side of the receiving substrate; a drying section (12) for drying the receiving substrate after the ink application; transportation means (13,14,15) for transporting the receiving substrate along a path (30–36) past the ink application mean (11) and through the drying section (12); wherein the path (30–36) has a path section (30–36) between a first position (P1,P2) at the ink application means (11) and a second position (P3–P7) downstream the first position (P1,P2), the path section (30–36) having first (30) and second (32) substantially straight portions and a convex curve (31) between the first (30) and second (32) substantially straight portions.

Abstract: A continuous media printer has a printer mechanism that prints on one or both surface of continuous print media. A media conveyor conveys media past the printer mechanism and includes rollers downstream of the printer mechanism. The rollers are located at a sufficient distance to provide a sufficient travel time from the printer mechanism to the rollers for material printed to be substantially dry when it reaches the rollers.

Abstract: A zoned UV curing system for drying UV inks and coatings in printing presses. A plurality of linear UV lamps are spaced apart laterally across the travel path of substrates in a press. The axis of each lamp is aligned generally with the travel path, but may be slanted slightly so that every point on the travel path passes directly under at least one lamp. Power supply and control means allow selection of which lamps are powered, so that unneeded lamps may be turned off to save power. The power level of each lamp is variable. One transverse UV lamp may be placed upstream to initiate curing before substrates pass the zoned system. An IR heater may be placed upstream to preheat UV ink and coatings to enhance curing and to smooth coatings.

Abstract: A printer has a fluid outlet that outputs a drying fluid over at least one surface of print media after printing to dry material printed onto the media.

Abstract: A printing unit configuration includes an accessory and a connection mechanism moveably fastening the accessory thereto, throwing the accessory thereon into a working position, and removing it therefrom into maintenance positions. A linear guide can be connected to the accessory and disposed perpendicular to a pivot axis, with the mechanism pivoting the accessory away from the unit about the axis and displacing it along the guide. The mechanism can have two pivot axes disposed parallel to the unit rotation axis and can pivot the accessory away from the unit first about the first axis then about the second. The mechanism can pivot the accessory about an axis perpendicular to the unit rotation axis and/or about a single pivot axis disposed below the accessory. The mechanism can connect the accessory to the unit to project into a recess of a side wall of the printing machine at a side opposite an operator side in a maintenance position.

Abstract: A printhead assembly has one or more printhead chips mounted end or end in or on a housing. The housing has an elongate air duct that supplies air to the printhead chips. The duct is open at both ends so the assembly may be used in left and right hand configurations.

Abstract: A flexographic printing press is provided which is particularly suited for printing thin, elastic webs. The web is imprinted by a plurality of printing decks which are positioned around a central impression cylinder. A between color dryer is located between each pair of adjacent printing decks and one or more additional dryers are located downstream of the last printing deck for drying the web before it leaves the central impression cylinder. The web does not pass any dryers after it leaves the central impression cylinder.

Abstract: A device for generating an air stream in a duplicating machine, in particular in a printing machine, has at least one fan unit, which includes at least one ionic fan. Methods for guiding and depositing flat products, in particular print carriers, in duplicating machines are also provided. Further, a method for the zonal powdering of print carriers in duplicating machines is provided. A delivery configuration, in particular for printing machines, is also provided.

Abstract: A method for drying a printing ink (114) on a printing substrate (14) in a printing press (40), one printing ink (114) having one color pigment being used to print on the printing substrate (14) at one position (18) of a path (16) along which the printing substrate is conveyed through the printing press (40), and, at a chronologically later point in time, at one further position (116) of the path (16), the printing substrate (14) being illuminated with light (12) from a laser light source (10) having a wavelength of between 350 nm and 700 nm, the wavelength being resonant to an absorption wavelength of the color pigment of the printing ink (114). A print unit (30) for implementing the method is described which has a laser light source (10) which emits light (12) of a wavelength of between 350 nm and 700 nm.

Abstract: Various embodiments of a system and method for forming coated toner images on a web are disclosed. The coating unit can be employed off-line or in-line with a digital printing system. The coating is applied on already fused toner images and is subsequently cured by means of UV radiation. The resulting coated fused toner images have a reduced sensitivity towards mechanical interaction, e.g., rubbing, and towards water, solvents and sunlight. In addition, they yield a smooth surface with an even tunable gloss, independent of the amount of superimposed toner layers.

Abstract: In accordance with one embodiment, a system comprises a print head assembly comprising a plurality of ink-ejecting nozzles and a drying station downstream of the print head assembly and configured to produce and emit air proximate a print media. A deflector is mounted between the print head assembly and the drying station and is configured to deflect an amount of the air that is produced by the drying station.

Abstract: A computer controlled power saving automatic zoned dryer for a printing press has a dryer head facing the substrate travel path, having a multiplicity of IR lamps connected individually or in groups to form a plurality of heating zones running longitudinally and each extending laterally side by side across the substrate travel path. The radiant heat output of each heating zone is controlled separately by means of a control unit connected to a power supply. The control unit individually regulates output of the heating zones. Unneeded zones are turned off to reduce cost of power and conserve energy. A plurality of heat sensors spaced laterally across the substrate path measure the surface temperature of substrate heated areas corresponding to the heating zones being operated and maintain an automatic set point temperature.

Abstract: A de-duster for a moving printing material web includes at least one blower nozzle assigned to a first side of the printing material web, and at least one blower nozzle assigned to a second side of the printing material web. The blower nozzles are set counter to web travel direction at an angle ?. The de-duster further includes at least one extraction nozzle assigned to the first side of the printing material web, and at least one extraction nozzle assigned to the second side of the printing material web. The extraction nozzles are set counter to the web travel direction at an acute angle ?. Each of the at least one blower nozzle is disposed between the at least one extraction nozzle at a respective side of the printing material web and the respective side of the printing material web. A combination of the de-duster and a cutting device, a folder with the combination, and a web-processing printing press in combination with the folder, are also provided.

Abstract: An ink drying apparatus for an ink jet printer includes an internal heating apparatus. The heating apparatus comprises gas flow restrictors for air that enters the heating apparatus. The gas flow restrictors may be formed as dual horizontal slots which are sized to maintain a higher air pressure in the heating apparatus as compared to the air pressure in a region within the ink drying apparatus that is outside of the heating apparatus.

Abstract: A device for supplying radiant energy of a wavelength in the near infrared onto a printing substrate (14) in a planographic printing press, including at least one radiant energy source (10) whose light (12) impinges on the printing substrate (14) on the path (16) of the printing substrate (14) through the printing press at a position (116) downstream of at least one printing nip (18) in a printing unit is described which has the feature that the radiant energy source (10) emits light (12) only in a narrow band, the wavelength of the light being non-resonant to absorption wavelengths of water and preferably being between 700.00 nm and 2500.00 run. Also disclosed is a method for supplying radiant energy. By supplying energy in this frequency range while avoiding absorption resonances of water, an unwanted drying or unnecessary heating of the printing substrate are advantageously reduced while providing energy to the printing ink for its particular drying process.

Abstract: An image forming apparatus includes a printing unit having a print head for applying ink to a surface layer of a recording medium transported thereto; a loop-forming unit capable of temporarily storing the recording medium discharged from the printing unit; and a heating unit for heating the recording medium fed from the loop-forming unit for fixing the ink applied to the surface layer onto its fixing layer. The heating unit includes a preliminary heating subunit for heating the recording medium from a normal temperature level to a ink fixing temperature level, a main heating unit for heating the recording medium at the ink fixing temperature level and a slow cooling subunit for slowly cooling the recording medium to the normal temperature level.

Abstract: The present invention relates to a method and apparatus for printing on a substrate for preparing packaging blanks. The substrate is divided into copies, each of these copies having one or more areas for subsequent application of an adhesive, and a printed image produced on the copy by application of an ink film and coated with a lacquer. It is an object of the present invention to develop a method and apparatus for printing on a substrate for preparing packaging blanks, for which specially manufactured lacquer plates are not required. Pursuant to the present invention, this object is accomplished based on the fact that an ink film and a binder customarily used for offset printing inks are used to produce a printed image on a substrate and a lacquer is applied over the surface of the substrate, wherein the binder is applied at areas intended for application of an adhesive and the lacquer is absorbed by the binder.

Abstract: A method and apparatus for processing a printing ink containing inhibitors and oligomers in a printing unit of a rotary printing machine in which the drying times of the printing ink on the printing material is shortened and the printing quality improved. In the illustrated embodiments, the printing unit includes two cylinders that form a press nip in which the printing ink is applied to passing printing material, and a catalyst mixture is applied to the printing material either by one of the cylinders or through an applicator device downstream of said press nip. A heating device is located in the conveying direction immediately downstream of the press nip or the applicator device.

Abstract: A dryer assembly for drying a liquid ink image formed on a substrate comprising a housing defining a portion of a sheet moving path; a plenum positioned within the housing, the plenum including air flow and outlet means contiguous to the plenum permitting forced air to exit the plenum, the outlet being in the form of a plurality of moving openings adapted to direct flowing air through the openings to the liquid image, the openings moving relative to the image; and a substrate transport device for moving the substrate carrying the liquid ink image on a front side thereof through the housing and under the plurality of moving openings. The dryer assembly has particular use in an ink jet printing system.