Abstract: A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.

Abstract: An ink feeding rate control method includes a reference print preparing step for making a printing plate by recording an image thereon based on first image data for recording a reference chart, and obtaining a reference print, a reference print colorimetric step for obtaining color data by reading the reference print, a conversion table preparing step for preparing a conversion table from the first image data and the color data of the reference print, a reference color data converting step for converting second image data for recording an image into reference color data by using the conversion table, a print preparing step for making a printing plate by using the second image data, and printing a print, a print colorimetric step for obtaining print color data by reading the print, and an ink feeding rate adjusting step for comparing the reference color data and the print color data, and adjusting ink feeding rates.

Abstract: A container is provided which comprises a cylindrical main body having an end wall at an end thereof; an outlet projecting from an outer surface of the end wall for allowing a content to be supplied; and a protecting member disposed on the outer surface of the end wall so that it surrounds the outlet and defines a groove portion between the outlet and the protecting member. The protecting member is preferably a continuous or discontinuous annular projection. A conduit of a pump can be coupled to the groove portion by engaging an inner circumferential surface of the protecting member with an outer circumferential surface of the conduit, or by engaging an outer circumferential surface of the outlet with an inner circumferential surface of the conduit.

Abstract: Disclosed is a lithographic printing method which performs lithographic printing with emulsion ink as it is supplied from an ink fountain which is a reservoir of the emulsion ink to a lithographic printing plate, comprising the steps of: computing amounts of consumption of ink and aqueous components of the emulsion ink on the basis of a percent image area of the lithographic printing plate; and replenishing the ink fountain with at least one member of the group consisting of the ink component, the aqueous component and the emulsion ink in accordance with the computed amounts of consumption of the ink and aqueous components.

Abstract: A stencil printing ink container comprises a cylinder, an area of one end of the cylinder, which area is other than an ink discharge opening section, being closed with an end wall, the other end of the cylinder being open, and a piston, which undergoes a sliding movement in an axial direction of the cylinder and along its inner circumferential surface. The ink container is filled with ink having a viscosity of at most 7.5 Pa·s with respect to a shear rate of 100 sec−1 and at 23° C. and satisfies a specific relationship among an inside radius of the cylinder, an inside radius of the ink discharge opening section, a length of the ink discharge opening section, a weight of the ink filled in the ink container, a sliding movement starting load of the piston, and the viscosity of the ink.

Abstract: A printing press having a number of identical inking systems for delivering ink to said press. The individual inking systems comprises an ink source including an ink reservoir held under a positive pressure. The ink travels from the manifold through a valve mechanism and to one or more piston mechanisms which undergo rotary and reciprocating motion, and thence to the ink outlets. Two piston and single-piston mechanisms are described.

Abstract: An ink metering system for a roller train in a printing machine which in the illustrated embodiment includes a fountain roller and a downstream train of rollers communicating with a plate or form cylinder of the printing press. One or more plating devices (12) are provided which each have a plate-like element (19) adjustably positionable with respect to a respective roller for leveling ink on the surface of the roller before or after passage through a contact zone with an adjacent roller in which ink is pulled off and separated between the rollers. The plating devices are relatively simple in construction and operation and provide stable ink guidance on the roller surfaces that noticeably improves print quality.

Abstract: The amount of ink in an ink fountain in a printer is detected on the basis of change of oscillation. The oscillation frequency is changed on the basis of dielectric constant information on the dielectric constant of the ink.

Abstract: An ink fountain device for a rotary printing press includes a rotatably supported ink fountain roller, ink fountain, at least one intermediate ink dam, a press unit, and an adjustment bolt. The ink fountain is comprised of an ink fountain blade and a pair of ink dams. The intermediate ink dam includes a press plate, an adjustable plate, and an operation plate. The press unit presses the press plate through the operation plate and adjustment plate toward the outer surface of the ink fountain roller and toward the ink fountain blade. The adjustment bolt adjusts a tight contact state of the press plate with respect to at least one of the outer surface of the ink fountain roller and the fountain blade.

Abstract: An ink feeding rate control method includes a reference print preparing step for making a printing plate by recording an image thereon based on first image data for recording a reference chart, and obtaining a reference print, a reference print colorimetric step for obtaining color data by reading the reference print, a conversion table preparing step for preparing a conversion table from the first image data and the color data of the reference print, a reference color data converting step for converting second image data for recording an image into reference color data by using the conversion table, a print preparing step for making a printing plate by using the second image data, and printing a print, a print colorimetric step for obtaining print color data by reading the print, and an ink feeding rate adjusting step for comparing the reference color data and the print color data, and adjusting ink feeding rates.

Abstract: Printing mechanism, printing process and machine of the tobacco processing industry. The printing mechanism includes a tempering device to adjust a temperature of the ink. The machine can be, e.g., a cigarette rod machine. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: An inking apparatus including an inking head which is manually adjustable in the X, Y and Z directions to facilitate quick and easy positioning of an inking probe in proximity to a defective die on a semiconductor wafer to ink and mark the die for exclusion from further processing. A horizontal positioning plate is horizontally adjustably mounted on a base plate, and an angular adjustment arm is angularly adjustably mounted on the horizontal positioning plate. The inking head is vertically adjustably mounted on the end of the angular adjustment arm and carries an ink reservoir from which ink is dispensed through an inking probe to the dies on the wafer.

Abstract: An ink cooling system for printing presses is disclosed. The ink cooling system is arranged to cool ink at locations within a printing press at the locations in which the ink properties are most likely to be adversely impacted, and which locations are or may be physically remote from the centralized ink supply or ink tanks. The disclosed system thus counteracts localized heating that commonly occurs in printing presses, thus minimizing or eliminating printing problems caused by heated ink.

Abstract: A printing device for printing on wrapping paper according to the present invention comprises a cartridge holder (40) having an ink nozzle (18) on the outside thereof and adapted to house an ink cartridge (50); an ink supply passage (79) connecting the ink cartridge (50) and the ink nozzle (18); and a linear actuator (80) supported at the cartridge holder (40) and adapted to push a plunger (52) in the ink cartridge (50) more into the ink cartridge (50).

Abstract: The present invention relates to a method for controlling the ink feed in a printing press which processes printing substrates (12) and features at least one inking unit and one computer and to a device for carrying out the method. The present invention is characterized in that the computer knows at least the physical properties of printing ink and/or printing substrates (12) as data, that the stored data is read into an ink control model which is stored in the computer, and that the optimum settings with regard to the ink feed are made on the basis of this ink control model before the start of printing or during the printing process.

Abstract: A seal for a chambered doctor blade (10) of a printing machine, in the form of a rubber-elastic body, which is inserted at the end of the chambered doctor blade in a seal holder (18) and lies against the periphery of a roller (12) against which the chambered doctor blade is placed, wherein the part of the seal (20) taken up in the seal holder (18), is constructed as a solid, rectangular support (22), which lies, with one end face, with a smooth surface (42), in contact with the chambered doctor blade (10) and is surrounded at the three remaining sides by continuous tolerance equalization lips (44).

Abstract: An ink bar is provided with a control device for bringing back printing ink into the ink duct (20) of a printing machine when required. The aim of the invention is to arrange all the essential function pieces in a space-saving manner, whereby said pieces are used for adjusting the ink level. The ink bar (1) is made from a hollow rod prifile having an undercut groove (4) on the lateral outer wall. Said groove serves for receiving cables (5). Discharge valves (8) and the supply device of an ink valve are arranged in the inner chamber of the rod profile. The ink valve is coupled to a sensor (9) and said valves are connected by means of the cable (5).

Abstract: An apparatus and method for maintaining a minimum amount of ink in an ink fountain (10) of a printing press includes an ink fountain level sensor (28) and ink dispenser (26) mounted on a carriage (30) for lateral movement on a track (32) across the ink fountain. The carriage traverses the ink fountain. When the ink in the fountain develops a spot below a preset minimum level, a preset amount of ink is immediately dispensed upon detection of the low spot by the sensor.

Abstract: A lightweight portable compact flexographic universal printer coater adaptable to printing units on the same press or other presses of the same nominal printing width. The printer coater has a frame which comprises an anilox roller, a means to rotate the anilox roller at or near the surface speed of the rotating printing surface, a liquid film supply for replenishing the liquid film on the surface of the anilox roller, and a positioner device to place the printer coater between the on and off-impression positions. The printer coater apparatus is placed onto at least one pair of fixed supports mounted on the printing press frame so that the positioner apparatus can place the printer coater between an on and off-impression position. Spacers of selected widths may be mounted between the fixed supports and the interior surfaces of the press frame to compensate for slightly varying press frame widths associated with different press manufacturers.

Abstract: A seal for a chambered doctor blade (10) of a printing machine, in the form of a rubber-elastic body, which is inserted at the end of the chambered doctor blade in a seal holder (18) and, with an obliquely applied lip (24), lies against the periphery of a roller (12), against which the chambered doctor blade is placed, wherein the seal (20) has a second lip (24), which forms a V-shaped cross section with the first.

Abstract: A method of feeding dampening water includes a density measuring step for measuring densities of first and second detecting patches 101 and 102 printed adjacent each other on printed matter 100 and presenting a difference in density variations after printing with varied feed rates of damping water and ink, a dampening water feeding step for controlling the feed rate of dampening water based on the densities of the first and second detecting patches 101 and 102 measured in the density measuring step, and an ink feeding step for controlling the feed rate of ink based on the densities of the first and second detecting patches measured in the density measuring step, and the feed rate of dampening water.

Abstract: An ink cooling system for printing presses is disclosed. The ink cooling system is arranged to cool ink at locations within a printing press at the locations in which the ink properties are most likely to be adversely impacted, and which locations are or may be physically remote from the centralized ink supply or ink tanks. The disclosed system thus counteracts localized heating that commonly occurs in printing presses, thus minimizing or eliminating printing problems caused by heated ink.

Abstract: An inking pump for an offset printing press has a cylinder defining a bore in which a plunger is received for both rotation and linear reciprocation, creating a first and a second opposed fluid chamber. The cylinder has formed therein a first and a second suction port with a spacing therebetween axially of the bore, and, angularly spaced 180 degrees from the suction ports, a first and a second discharge port with an axial spacing therebetween. The plunger has formed in its surface a first recess for placing the first fluid chamber in successive communication with the first suction port and the first discharge port during each complete revolution of the plunger, and a second recess for placing the second fluid chamber in successive communication with the second suction port and the second discharge port during each complete revolution of the plunger.

Abstract: An ink cartridge for an ink management system includes a piston having a stepped back surface for improved reflection of ultrasonic acoustic waves through presentation of flat surfaces normal to the incident waves, thus permitting the piston to possess a preferred cone shape and structural rigidity. Heights of steps are preferably separated by even multiples of one-quarter wavelength of incident acoustic waves to avoid destructive interference from multiple reflections. Improved reflectivity overcomes problems with using an acoustic range finder to measure the position of the piston.

Abstract: A variable volume container includes a cylindrical main body having an end wall at an end thereof; an outlet projecting from an outer surface of said end wall for allowing a content to be supplied; a piston member fitted into said main body sealingly and slidably in an axial direction of said main body for defining a variable volume storage chamber between itself and said end wall; a plug member detachably mounted to said outlet; and an impact resisting reinforcement disposed at said end wall. The reinforcement may be a part of said end wall having a thickness gradually increased toward said outlet, or may be a rib shaped projection. Such a variable volume container placed upside down in packaging or transport is reinforced at the end wall of the main body where the outlet is disposed. Thus, impact is not concentrated at the root portion of the outlet but distributed, so that the outlet is prevented from being damaged, and the container is placed more stably.

Abstract: A color ink supply device for an ink ductor in a rotary printing press achieves an even color distribution on the ink ductor. A plurality of ink supply devices are arranged axially along the ink ductor. Each ink supply device includes a main chamber and may also include a pre-chamber. A doctor blade device may also be utilized.

Abstract: An inking unit in a printing machine, having an ink reservoir, a dampening-solution reservoir, and conveying paths for conveying ink and dampening solution from the ink reservoir and the dampening-solution reservoir, respectively, to a web to be printed, and for conveying ink, that has emulsified with the dampening solution and that has not been picked up by the web, back to the ink reservoir, includes an ultrasonic transmitter installed so as excite an exposed dampening solution-carrying surface section of the inking unit.

Abstract: A printing apparatus has a manual control mode. The manual control mode has a proportion indication, a proportion adjustment key, a selected range adjustment key, and region selection keys. In the manual control mode, an operator selectively touches the region selection keys to select a region in which an ink key opening is to be changed. Next, the operator touches the selected range adjustment key to change the ink key opening of the selected region. The ink key opening is increased or decreased by the percentage indicated at the proportion indication the number of times the selected range adjustment key is touched. The settings made in the manual control mode are stored in a storage section, and are used to control the amount of ink supply during automatic control. Thus, the printing apparatus having the function of automatically controlling the printed density can make partial tone changes.

Abstract: An inking device of a rotary press comprises an ink fountain roller rotatably supported on left and right frames, and an ink fountain device movable toward and away from the ink fountain roller. The ink fountain device is switchable among a fixed position close to the ink fountain roller, a throw-off position separated from the ink fountain roller, and an intermediate position provided between the fixed position and the throw-off position, and switching means is provided for switching the ink fountain device by a pivoting operation of a locking handle so that the ink fountain device is located at any of the three positions. The inking device makes it easy to secure a vertical space for operating an ink fountain, and can fix the ink fountain device with a constant clamping force without a tool.

Abstract: A chambered doctor blade assembly which can be placed against a roller of an inking unit of a printing machine, in particular onto an engraved roller, has a chamber connected to the surface of the roller by means of an orifice through which printing ink can flow. The orifice can be closed and re-opened by means of a closing element which is arranged within the chamber and which can be brought into a closing position. When the closing element is in the closing position, printing ink can continue to flow through the chamber.

Abstract: The amount of ink in an ink fountain in a printer is detected on the basis of change of oscillation. The oscillation frequency is changed on the basis of dielectric constant information on the dielectric constant of the ink.

Abstract: An inking apparatus according to the present invention includes an ink fountain roller, an ink fountain blade, a front end of which is position-adjustable to be located close to the outer circumference of the ink fountain roller, a pair of side plates, each standing upright from the ink fountain blade so that an arcuate front end surface encircles part of the outer circumference of the ink fountain roller to form an ink fountain for storing ink in cooperative with the ink fountain roller and the ink fountain blade, in which a permanent magnet is embedded in a bottom surface of each the side plate in contact with the ink fountain blade for fixing the side plate to a desired position of the ink fountain blade. The pair of side plates are movable relative to the ink fountain blade along an axis of the ink fountain roller.

Abstract: An apparatus and method for maintaining a minimum amount of ink in an ink fountain (10) of a printing press includes an ink fountain level sensor (28) and ink dispenser (26) mounted on a carriage (30) for lateral movement on a track (32) across the ink fountain. The carriage traverses the ink fountain. When the ink in the fountain develops a spot below a preset minimum level, a preset amount of ink is immediately dispensed upon detection of the low spot by the sensor.

Abstract: The invention concerns a rotary tampon printing press with vertical engraved roller and vertical tampon roller wherein the engraved roller is supplied with ink by an ink dispensing system and the ink dispensing system has an Archimedean screw for supplying the printing ink.

Abstract: The present invention relates to an ink supplying apparatus capable of achieving labor-saving of the cleaning operation and shortening of the working time at ink replacement or the like in a printing press. This ink supplying apparatus is equipped with an ink tray provided in the interior of an ink fountain and having a bottom plate which covers upper surfaces of ink keys, and further equipped with a deflection restraining structure for supporting the bottom plate from below to restrain the deflection of the ink tray.

Abstract: The invention relates to an end sealing system for. a scraper chamber (6) of an impression machine or a machine depositing a viscous or liquid fluid on a surface, the chamber cooperating with a screen transfer cylinder (1) and being laterally closed by longitudinal scrapers (2). The system includes a mounting frame (3) housed at the end of the scraper chamber (6), an elongated seal (4) made of an elastically deforming alveolar material cooperating at its ends with the mounting frame (3), and a rigid second seal (5) mounted on the elongated seal (4) between the latter's ends, and being guided in the mounting frame (3). The ends of the elongated seal (4) rest under the ends of the scraper (2) on the side opposite the screen transfer cylinder (1).

Abstract: The side wall (5) for an ink fountain of a printing machine has two plates (11, 14) fixed some distance apart and an intermediate plate (13) having a front edge (13a) in the shape of an arc of a circle. This intermediate plate (3) is mounted between the plates in such a way that it can be shifted and tilted. The front edge of this plate contacts the circumference of an ink fountain roller (6) via springs (18, 19) acting on the intermediate plate. The wall has a slideway (10) in which the plates (11, 14, 13) are mounted. The slideway has a reinforced region (12) on one of its sides which is proximate the ink fountain roller (6). The side wall (5) thus more effectively seals an ink fountain against leakage. The blade at the bottom of the ink fountain is split into several adjacent sectors (111) that can be shifted so as to vary the distance between the edge (112) of the blade and the circumference of the ink fountain roller (6). The sectors (111) can be shifted in the plane of the blade, parallel to each other.

Abstract: An ink capsule and an ink supply for a printer, the capsule (10) comprising a hollow container (11) having a mouth (18) and an inlet port (15), a flexible impermeable liner (17) sealed to the container shell, and which is filled with a resilient polymeric foam (21), with the mouth of the container being closed by a porous disc (22). The ink supply (31) further includes a variable volume fluid reservoir (41) connected to the inlet port (15) for the movement of fluid between the reservoir (41) and the container (11) in response to the expansion and contraction of the reservoir (41).

Abstract: In a method of correcting a position of each ink fountain key, a position of an ink fountain key is set as a present position with reference to a home position by using print data including an image area ratio of a reference plate having a predetermined image. A printing product is printed by using the reference plate with the ink fountain key being set at the present position. A density of each of respective areas, corresponding to the ink fountain keys, of the obtained printing product is measured. One of the home position and the present position of the ink fountain key is corrected on the basis of a difference between the measured density of the corresponding area and a reference density stored in advance. A position correcting apparatus is also disclosed.

Abstract: The present invention provides an ink supply apparatus for a printing press in which the ink supply amount from an ink fountain to an ink fountain roller is controlled by regulating a gap between ink blades and the ink fountain roller, wherein an integral type ink tray comprising a bottom portion covering portions of the upper faces of the ink blades excluding the distal end portions thereof and side portions covering the inside surfaces of side plates is provided, a first seal member is interposed between the inside surface of the side plate and the side portion, and a second seal member in slidable contact with the ink blades is interposed between the ink blades and the bottom portion of the ink tray.

Abstract: An ink fountain in a printing machine with an ink fountain foil lying on a base of the ink fountain includes an ink metering device having a plurality of metering elements covered by the ink fountain foil, and a device for firmly holding directly on the base of the ink fountain, an underside of the ink fountain foil lying on the base of the ink fountain, and a method for securely fixing the ink fountain foil in the ink fountain.

Abstract: An improved ink cartridge dispensing valve system for use with a printing press ink cartridge is provided. The valve system works on the same principle as a ball valve to automatically dispense ink when subjected to pressure. The valve system includes an attachment post and an attachable nozzle. The attachment post is an integral part of the dispensing end of the ink cartridge and is recessed so that the cartridge can be easily shipped without damaging the attachment post. The attachable nozzle fits over the attachment post and opens or closes depending on whether pressure is placed on it by the ink in the cartridge.

Abstract: An ink duct for use with a screen roller which comprises a working doctor blade and a closing doctor blade, wherein the working doctor blade has one or both sides partially or completely coated with an unreleasable coating of a low surface energy substance having a surface energy of 10 to 60 mN/m. This coating prevents disruptive ink deposits from forming on the side of the working doctor blade opposite to the ink retaining portion of the ink duct and reaching the doctored surface of the ink metering roller in an uncontrolled or random manner.

Abstract: A temperature controlled gravity feed fountain solution supply apparatus for a printing unit of a printing press. The invention helps to maintain a consistent, cool temperature within the fountain solution pan of a gravity feed fluid supply apparatus. The apparatus includes an insulated, airtight fountain solution supply tank connected to a lower fountain solution pan by a vertical insulated supply tube. The tank has cooling coils arranged in M-shaped layers, each of the layers being supported by a perforated, heat-conducting cooling plate. The pan has a supply pool that communicates with an elongated dispersement tube having openings which serve to circulate fountain solution about three cooling fins connected to, and extending the length of the dispersement tube. Alternatively, the solution pan has a separate cooling coil and cooling control.

Abstract: An apparatus and method for supplying emulsion ink to a printing plate on a printing press is disclosed. The apparatus includes an ink feed and recirculation system and associated control system to quickly and reliably form a high quality emulsion ink. The control system utilizes both feedback and feedforward control strategies. The recirculation of the emulsion ink ensures that the emulsion ink remains stable and makes it possible to reformulate the emulsion ink, if necessary, without waiting for the exhaustion of all of the emulsion ink that is in need of reformulation.

Abstract: A container having a first end and a second end, an internal cavity located within the container which provides an opening in the first end and extends towards the second end; a portion of the container, having an attached end and a free end, may be detached from a remaining portion so as to expose the internal cavity; and the free end is configured so that it may be seal the internal cavity once the portion of the container is detached.

Abstract: A device for filling with printing ink a respective ink duct of various printing units of a printing press, provided with an ink cartridge reciprocatingly movable on a crossbar above the respective ink duct, includes a container system provided with a plurality of ink cartridges, the container system being mounted so as to be movable along the printing press, a control unit for controlling the container system, and a gripper system disposed in the container system for changing the ink cartridges.

Abstract: An ink feeding system for feeding ink to an ink fountain of a printing, duplicating or like machine includes a can holder for holding a can of printing ink. A support arm suspends the can holder and can above the ink fountain. A piston-and-cylinder device feeds ink from the suspended can through a hole in the closed bottom end of the can and into the ink fountain. A disposable gasket is placed on top of the ink in the can for engagement by a piston head of the piston-and-cylinder device.

Abstract: An ink fountain has one side closed by a fountain roller constantly exposed to the ink contained therein. Forming a part of the fountain bottom, a blade assembly defines in combination with the fountain roller an ink outlet which is to be closed and opened as the blade assembly travels toward and away from the fountain roller. Sprung away from the fountain roller, the blade assembly is moved toward the fountain roller against the spring bias by at least two linear actuators such as double-ended-rod fluid actuators spaced from each other in the axial direction of the fountain roller. The output members of the linear actuators, such as the reciprocable cylinders of the double-ended-rod fluid actuators, are rigidly interconnected as by a simple link, being aligned parallel to the fountain roller axis, for synchronous operation, thereby conjointly causing the travel of the blade assembly into leak-free contact with the fountain roller.

Abstract: An inking device comprises an ink fountain device including a blade provided so as to be movable toward and away from a circumferential surface of an ink fountain roller, a pair of side plates provided in both side end portions of the blade, and a holder for supporting the blade and the pair of side plates. The ink fountain device is supported on an ink fountain support member so as to be movable along an axial direction of the ink fountain roller. The ink fountain support member extends along the axial direction of the ink fountain roller. The side plates are always urged toward the ink fountain roller by compression springs, and are pivotably supported, so that the side plates are automatically brought into intimate contact with the circumferential surface of the ink fountain roller.