Abstract: A coating element has a liquid deflector member for diverting doctored coating liquid away from the surface of a coating applicator roll. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the surface of the coating applicator roll. Excess coating liquid follows a path away from the coating applicator roll surface and down the active face of the liquid deflector member, thereby avoiding contamination of the applicator roll surface.

Abstract: The devices are held in place by a hollow fastener which engages the threaded holes in the printing press which accommodated prior art adjustment devices. A pin moves endwise in the screw and its endwise motion adjusts ink flow. The pin is moved endwise by a lever assembly operated eccentric mechanism. The handle of the lever assembly extends through a slot in a calibrated faceplate, giving clear indication of the setting of the device.

Abstract: An apparatus for coating a web of indeterminate length has a coating element comprising a liquid deflector member for diverting liquid away from a coating surface. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the coating surface. Excess coating liquid follows a path away from the coating surface and down the liquid deflector member thereby avoiding contamination of the coating surface.

Abstract: A printing press ink scraping blade is disclosed. The ink scraping blade is of a unitary construction and includes a working end as well as a mounting end. The working end is preferably substantially thicker than the mounting end to provide substantially more material at the working end. As the scraping blade engages a scraping roller of a printing press, the blade is exposed to abrasive action and the additional material provided increases the serviceable life of the blade. To ensure that the blade maintains sufficient flexibility and deflection characteristics, the remainder or mounting end of the blade, is of a substantially reduced thickness. The blade may be manufactured from spring steel to further enhance flexibility.

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: A detachable inking device for a flexographic printing machine, a manipulating device for removing and replacing the inking device, a cleaning device, and a repair station for refurbishing the inking device. The inking device itself is a chambered doctor blade (9) mounted on two lever-supports (13, 14) through which ink is supplied from a reservoir. The lever-supports are rigidly attached to a shaft (11) which is pivotable between the frames (34) of the flexographic printing machine. The chambered doctor blade has a body (25) made of light material, crossed at one of its ends by a tube (26) emerging from the bottom (28) of body (25), and at the other end by a tube (40) having its opening part (29) at level with the bottom (28) of the body (25). The latter rests on seals (38, 39) secured to the lever-supports (13, 14) to which are attached centering and fixing means (17, 18) allowing a quick loosening of the chambered doctor blade (9) without the help of any tool.

Abstract: In a paper machine having a roll rotating about an axis extending in a cross machine direction, and having a doctor blade applied to the roll surface by a blade holder parallel to the axis and carried on a doctor back, an apparatus is provided for accommodating relative movement between the blade holder and the doctor back in the cross machine direction during mounting and removal of the blade holder. The apparatus comprises a rail fixed to the doctor back and extending longitudinally in the cross machine direction. A groove extends along the length of the guide rail. The groove has a bottom, a width measured between confronting sides, and a top defined by ledges projecting inwardly from the sides, with inner edges spaced one from the other to define a slot that underlies the blade holder and has a width narrower than the width of the groove. A plurality of shafts are spaced along the length of the blade holder and project downwardly through the slot and into the groove.

Abstract: A device for metering and equalizing an ink layer on the surface of a printing machine roller, in particular on the surface of an ink applicator roller in the inking unit of a printing machine, the surface being additionally wetted with dampening medium. The device contains at least two doctor blades which are arranged preferably at a short distance one behind the other in the direction of rotation of the roller and rest under pressure against the surface of the roller and of which a front doctor blade, with respect to the direction of rotation of the roller, has a doctor blade edge radius such that essentially only the dampening medium, but not the ink layer, can be wiped off from the surface of the roller by said front doctor blade, while a rear doctor blade, with respect to the direction of rotation of the roller, has, by comparison, a smaller doctor blade edge radius such that at least part of the ink layer which has remained on the surface of the roller can be wiped off.

Abstract: A doctor blade for direct contact with a ceramic roll surface. The doctor blade includes a strip of metallic carrier material, which, along one edge section is provided with a ceramic coating. The ceramic coating on the blade has a hardness ranging from approximately 850 to 950 microvickers, thereby substantially increasing wear resistance of the blade without substantially increasing wear on the ceramic roll surface for which the blade is adapted for use.

Abstract: A gravure printing method is provided for printing characters or patterns with desired colors and tones on a base material with a printing drum set with 200 to 400 mesh lines and the depth in the range from 10 to 17&mgr;. The ink may be process color of aquatic gravure ink in which coloring materials for indigo blue, red, yellow, black, and white colors are printed once or repeatedly in the overlaid state or specially toned inks. Another aspect of the invention provides an ink pan structure and arrangement for a gravure printing machines using aquatic or oil gravure ink. The ink pan structure has an ink pool sized for only a furnisher roll to be dipped therein and a cooperating printing drum is always maintained outside the ink pool. A furnisher roller unit and arrangement for a gravure printing machine is also provided. The unit may include a plurality of furnisher rollers. A doctor knife unit and arrangement for a gravure printing machine is also provided. The unit may include a plurality of doctor knives.

Abstract: A beam structure (10) made of a composite for a pulp machine/paper machine/board machine or for a paper/board finishing device. The beam (10, 10a1, 10a2) is formed of a first curved part (12) and of a second straight part (13) joined thereto, to which second straight part (13) a doctoring, coating or measurement apparatus (110) is attached.

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: A doctor blade for wiping excess printing ink off the surface of a printing form (10) has a front section in the form of a leaf (3) which interacts with the surface of the printing form (10). In order to avoid wear or damage to the printing form surface as a result of the contact pressure exerted by the leaf (3) on the printing form surface, the leaf (3) is provided with a coating (5) over the entire doctor blade length. The coating (5) consists of lubricant or contains lubricant particles (8). As a result of the significant reduction in friction between the leaf (3) and the printing form surface, not only is the wear on the printing form surface reduced, but the wear on the doctor blade is also reduced, and its service life is extended.

Abstract: In an inking system of a rotogravure printing press there are included an ink reservoir, an ink doctor blade device and an ink catch reservoir. All of these components of the inking system are height-adjustable with respect to the formed cylinder of the printing machine.

Abstract: A support beam for at least one long working unit, notably of a paper machine or coater, includes several bundled, long profile elements forming in their entirety the support beam.

Abstract: Printing doctor having a doctor body and a coating of hard material which covers at least that end face of the doctor body which is intended to bear against a rotating cylinder. In order to provide the coating of hard material with a greater stability, before the coating of hard material is applied, the surface of the doctor body is provided, at least within the end face, with a multiplicity of recesses, the maximum diameters of which are in each case considerably smaller than the width of the end face. These maximum diameters expediently lie below 1/50 of the width of the end face, or between 0.1 and 10 .mu.m. The recesses are expediently produced by an ECM process.

Abstract: A doctor blade for use in screen printing includes a head, a base in the form of a lip and at least one elastically deformable member connecting the head and the base. The elastically deformable member is structurally discontinuous on at least one location in the longitudinal direction of the doctor blade extending along a plurality of spaced spring layers. The elastically deformable member is realized from a plurality of elastically deformable wires which are arranged in spirals or in undulations or from a cut-out sheet so as to form a double comb the stiffness of which is controlled by the transverse dimension of the windings, undulations, or cut-outs, or the characteristics of the constituent material, and the spacing between the teeth of the comb.

Abstract: A metering strip for an ink fountain of a printing press for metering printing ink, especially a doctor blade, is fastened in a pivoting mount and has a cylindrically shaped edge with a radius in the range between 0.3 and 1.5 mm. The edge is pressed against an inking roller and forms a metering nip with this roller for the printing ink to be metered. Axial recesses merge on both sides of the metering strip with the cylindrically shaped, wear-resistant edge that covers an angular range of more than 180.degree..

Abstract: In a wiping device of an intaglio printing press in which a doctor blade can follow the movement of a wiping roller through a cam mechanism, a holder for the doctor blade is supported on a tank on the machine body side by long holes, formed in the holder in its right-and-left direction and elongated in its back-and-forth direction, and flanged pin members, passing through the long holes, so as to be movable in the directions of throw-on and throw-off movement of the doctor blade. The rightward and leftward movements of the holder are restrained by the long hole and pin member located at one site in the center of the holder. Thus, the doctor blade can fully follow the cocking of the wiping roller, and there are no problems due to the penetration of a solvent or ink.

Abstract: In an inking apparatus for use in a printing press, an ink pan located below a plate cylinder is separated into a first part which accommodates a furnisher roll for furnishing ink and a second part which receives contaminated ink containing foreign substance scraped off a doctor blade. In order to prevent the ink within the second part from flowing directly into the first part, partitions are provided, or alternatively the second part is positioned lower than the first part, or alternatively the first part and the second part are comprised of two separate receptacles. The supply of ink to the plate cylinder may be carried out by any suitable means other than the furnisher roll. The ink pan may be configured in the form of an exclusive receptacle adapted to receive only the contaminated ink containing foreign substance scraped off the doctor blade, the supply of ink to the plate cylinder being effected without passing through the ink pan.

Abstract: A composite ink fountain blade for a printing press wherein the blade has a multiplicity of blade segments fixed between an upper cleaning plate and a lower support bar. Each of the segments is provided with smooth, ground or polished, machine finished, straight and parallel sides for sliding abutment against each other during the adjustment of an extending portion of the blade segments. Adjustment of the blade segments controls the flow of ink from the ink reservoir through the ink fountain blade first pickup roller nip.

Abstract: The invention pertains to a doctor device for intaglio printing machines with a doctor blade displaceable relative to the printing cylinder, the working stroke of which is adjustable. In keeping with the invention, a motor-driven swash plate rigidly affixed to the frame actuates the doctor blade along with a displaceable doctor beam.

Abstract: A device for inking a cylinder having depressions therein including a chamber doctor body to which a holder is pivotally connected, the holder being connected to a doctor blade. A force is applied to the holder causing the holder to pivot and force the doctor blade to contact the cylinder. The force may be adjustable aiding in compensating for wear of the doctor blade.

Abstract: A metering device for use in a coating apparatus for coating a moving web running over a backing member wherein the metering device includes a metering blade having an edge disposed in close proximity to the web and a profiling device for selectively changing the profile of the blade edge. The profile bar is joined to a plurality of adjustment actuators by bar limiter elements that are mechanically interlocked such that the movement of each limiter element relative to an adjacent limiter element in the direction of bar deformation is limited to a maximum distance. The edges of adjacent limiter elements are provided with interfitted projections and slots with sufficient clearance to permit only limited relative movement of adjacent limiter elements.

Abstract: A doctor device, notably for machines used to coat paper or cardboard, with a relatively bendable, flexible doctor element fitted in or on a separate holder. At least along its length in the holder, the device features a convex crowning of its working surface about its longitudinal axis.

Abstract: An apparatus to apply a uniform coating to a gravure cylinder for imprinting upon a second surface, typically a web, is disclosed herein. The apparatus includes a feed bar, which controls the flow of the coating solution, and a supply box, which includes end dams, an overflow port, and a reservoir created by a baffle. With the overflow port and baffles a uniform coating of a composition is achieved without imperfections created by evaporation or foreign matter.

Abstract: A rotogravure inking system uses an ink trough to apply ink to a printing cylinder that dips into ink in the ink trough. The ink trough has a length less than the length of the printing cylinder. Projecting end portions of the printing cylinder are not supplied with ink from the ink trough. Thus end faces of the printing cylinder will not receive any ink and will not throw off the ink thereby eliminating ink spattering and the associated spatter protection shields.

Abstract: An apparatus for printing a fibrous web with a decorative pattern, comprising a printing roll having a cavity forming a shaped ink transfer zone to print a principal pattern on the fibrous web through rolling contact therewith, and an array of small recesses in a spaced apart relationship surrounding the cavity and having the ability to trap dirt particles adhering to the printing roll which are being trained over its relief surface by a doctor blade scraping excess ink therefrom. The array of recesses provides a cleaning action by continuously dislodging dirt particles collecting underneath the leading edge of the doctor blade and preventing the dirt particles from agglomerating into large flocs which may interfere with the operation of the doctor blade. The array of recesses also defines an ink transfer zone printing on the fibrous web a relatively faint background pattern upon which the principal pattern is visually eminent.

Abstract: Disclosed is an inking device for a photogravure printing apparatus, wherein the inking chamber is closed on all sides; it is filled with ink under pressure; it extends solely over the length of the engraved part of the cylinder, and it is defined, at its two longitudinal ends, by radial closure plates with curved peripheral surfaces which are applied against the smooth end part of the engraved cylinder, on either side of its useful engraved central part.

Abstract: The invention comprises a mobile rest plane for tiles on which operates a matrix cylinder provided with an elastically deformable peripheral part having a smooth external skin made of an elastomer material, on which a matrix, in the form of microscopic cavities, is cut. A doctor, arranged in order to be in contact with the skin, has the task of scraping away excess glaze and any impurities deposited on the skin as well as the task of remixing the glaze such as at least partially to replenish the cavities with freshened glaze. The matrix cylinder is positioned on the rest plane such as to roll thereon without dragging on a tile upper surface as the tile transits on the rest plane.

Abstract: An apparatus for inking or printing on the surface of an item, such as a badge or emblem, is described. The apparatus incorporates a number of sub-systems including: an apparatus for holding and positioning blank screen material; a laser ablation system for producing the desired hole pattern in the blank screen material to form screens; a print/ink station; a table assembly for supporting a plurality of labels or emblems and moving such labels or emblems sequentially to the print station; and an apparatus for moving the screens to the print/ink station. The apparatus also includes heater for drying the ink after the printing/inking step is completed. The apparatus for producing the patterns includes a laser, mirrors for moving the beam in the x and y directions, and optics for focusing the beam on the blank screen material. The inking station includes an ink tray, a reciprocating squeegee and blades for wiping ink from the leading edges of the squeegee after the squeegee passes over the pattern.

Abstract: A doctor arrangement for a rotary intaglio printing machine comprises a doctor to remove excess ink from the plate cylinder. The doctor is in the form of a band which extends parallel to the axis of rotation of the plate cylinder against which it is pressed by a doctor bar. The doctor band is so flexible that it can be wound on and unwound about axes which extend transversely to its longitudinal direction and the doctor band is so mounted and guided at the doctor bar that it is displaceable relative thereto in the longitudinal direction, the length of the doctor band being substantially greater than the axial length of the plate cylinder. A respective winding device for winding on and unwinding the doctor band is arranged in the region of each of the axial ends of the plate cylinder. A drive means displaces the doctor band along the doctor bar during the printing operation when the doctor band is unwound from the one winding device and wound on to the other winding device.

Abstract: A Gravure printer comprises a mounting cylinder, an engraved printing sheet wound on the mounting cylinder, an ink supplier for supplying a surface of the printing sheet with ink, a doctor blade having a leading edge which scrapes the surface of the printing sheet to remove excess ink, and an impression cylinder for pressing a cut paper against the surface of the printing sheet. The feature of the invention is that the printing sheet is provided with an abrasive part to which the leading edge of the doctor contacts to be ground during rotation of the mounting cylinder.

Abstract: In an ink supply apparatus, inks of a paste-like consistency are supplied from a cylinder to a chamber doctor blade disposed adjacent an inking roller. Two conduits are disposed at opposite ends of the chamber doctor blade and each conduit communicates with one of the two opposite ends of the cylinder. Ink is supplied to the cylinder through an aperture. Within the cylinder there is disposed a reciprocating piston which, at low speed, forces ink via the conduits to the chamber doctor blade.

Abstract: A doctor blade bar for a short inking unit employs an eccentric disk to engage an abutment on a doctor blade holder to retract a doctor blade that is held by the holder and a cooperating doctor blade guide into a retracted position with respect to a screen roller, Disengagement of the eccentric disk from the abutment allows the doctor blade to be moved by a pressure spring into contact with the screen roller.

Abstract: An apparatus for placement of a doctor blade bar against an ink-dispensing roller utilizes spaced lifting or camming strips on doctor blade base support beams and cooperating counter strips or cam followers on doctor blade supporting base bodies to move the doctor blades toward or away from the screen roller. The slopes of the two inclined lifting strips on each support beam are preferably different from each other.

Abstract: A gripper bar conveyor mechanism for transferring sheets to be printed from one rotating impression cylinder to another in a multiple color rotary offset printer of the type having sets of impression cylinders and corresponding blanket cylinders for rolling contact with the sheets to be printed therebetween. The gripper bar conveyor mechanism includes a transferrable gripper bar activatable for releasably securing sheets to be printed in a fixed orientation with respect to the transferrable gripper bar. The registration projection is affixed to the transferrable gripper bar. A registration pocket is adjustably affixed to each of the impression cylinders for temporarily receiving the registration projection of the gripper bar and thereby holding the gripper bar in a desired position with respect to the impression cylinder. A conveyor band is attached to the gripper bar and is operably connected to the rotary offset press for moving the gripper bar from one impression cylinder to the next.

Abstract: The wiping cylinder (10) is mounted in eccentric bushes (12) and can be coarsely adjusted by hydraulic cylinders (15), by which the eccentric bushes can be rotated, between its operating position resting on the plate cylinder (3) and a position of rest removed from the latter. Additionally, a fine adjustment is provided, by which the change in spacing between the axles of the plate cylinder and the wiping cylinder as a result of deflection of the plate cylinder (3) occurring during the engagement of the impression cylinder (2) can be compensated. For this purpose, the hydraulic cylinders (15) are each attached to a worm wheel (17) which can be rotated by a worm spindle (18). Serving for the fine adjustment of the worm spindle (18) is a stepping motor (19) which is adjusted simultaneously with the engagement and disengagement of the impression cylinder (2) in each case by a preselectable amount in either direction.

Abstract: A strip of predetermined thickness and sufficient width is attached adjacent to the edges of spreader and wiper blades used in toner cartridge assemblies for printers, copiers and facsimile machines. The strip provides heat dissipation and distortion prevention characteristics to previously manufactured spreader and wiper blades. The strip is made of heat reflective material and might be a ductile metal such as aluminum or plastic which has elastomeric properties. The strip is attached to the blade by adhesive, metal plating, or by other methods. In one embodiment the strip is placed on the blade such that it is relatively flat. In another embodiment the strip is applied to the blade such that the strip forms an upstanding lip protruding angularly from the blade adjacent to the blade's edge. The strip or lip on the blade does not contact the roller on which toner is being spread or from which toner is being wiped.

Abstract: A printing press wash-up system is disclosed comprising a fluid receptacle arrangement, a mounting assembly, a wiper assembly, and a pivoting arrangement. The fluid receptacle arrangement is constructed and arranged to operably receive fluid from a printing press roller when it is mounted to the printing press by means of the mounting assembly. The wiper assembly selectively removes fluid from the printing press rollers in operable association with the fluid receptacle arrangement to direct fluid from the roller to the fluid receptacle arrangement. The pivoting arrangement selectively pivots the fluid receptacle arrangement between a first and second extreme position, the first extreme position occurring when the fluid receptacle arrangement is operably positioned to selectively receive fluid from the printing press roller and the second extreme position occurring when the fluid receptacle arrangement is positioned such that it cannot selectively receive fluid from the printing press roller.

Abstract: The wiping device operates with at least one cylinder (3) which receives the ink raised from the printing plates and against which rests a doctor blade (4) which removes the ink from said cylinder (3). In order to clean the doctor blade (4) reliably from ink during the printing operation, there are mounted on the opposite longitudinal edges of said doctor blade (4) wall parts (6) which are U-shaped in the plan view and whose U-limbs (6a) are directed towards one another. Between said U-limbs (6a), an ink slide (8) is moved constantly back and forth on the doctor blade surface by a drive device, the side parts of said ink slide facing the wall parts being adapted to the design of said wall parts. Installed on the back of the doctor blade (4) on each side is an ink pump whose slot-shaped inlet opening (12) extends between the U-limbs of the relevant wall part (6).

Abstract: A gripper bar conveyor mechanism for transferring sheets to be printed from one rotating impression cylinder to another in a multiple color rotary offset printer of the type having sets of impression cylinders and corresponding blanket cylinders for rolling contact with the sheets to be printed therebetween. The gripper bar conveyor mechanism includes a transferrable gripper bar activatable for releasably securing sheets to be printed in a fixed orientation with respect to the transferrable gripper bar. The registration projection is affixed to the transferrable gripper bar. A registration pocket is adjustably affixed to each of the impression cylinders for temporarily receiving the registration projection of the gripper bar and thereby holding the gripper bar in a desired position with respect to the impression cylinder. A conveyor band is attached to the gripper bar and is operably connected to the rotary offset press for moving the gripper bar from one impression cylinder to the next.

Abstract: A doctor blade, for removing excess ink from a gravure cylinder, comprises first and second blade sections formed of flexible metal. The blade sections are joined by a rigid, slotted coupling member so as to lie at a substantial angle to each other. The first blade section contacts an upwardly moving section of the cylinder at an angle of from 65 to 90 degrees. The second blade section is mounted in a cantilever manner to accommodate resilient deflection of the first blade section. The first blade section is thus maintained in substantially uniform pressure contact with the cylinder while at the same time being disposed at a relatively large angle to the surface of the cylinder for optimum doctoring effectiveness.

Abstract: Doctor blade apparatus for use with a form cylinder of a printing machine has a doctor blade holder which is mounted in a series of slide assemblies spaced along the length of the blade holder so that the holder can be adjusted both in directions parallel to and perpendicular to the cylinder axis thereby providing accurate positioning of the blade on the cylinder.

Abstract: To associate the ink requirement of subject matter to be printed from a printing forme (6, 27) to the ink being supplied thereto by an ink application cylinder (5, 26), the ink application cylinder is provided with a jacket, sleeve or cover having a cellular surface, and in which the cell distribution or cell configuration of the surface is matched, at least approximately, and, for example, in zones or regions, to the subject matter to be printed from the forme. The ink can be transferred by an ink application roller, in which a plate cylinder carries the forme, and the ink application roller, the plate cylinder and the cylinder with the cellular surface cover all have essentially the same diameter and are all driven at the same speed.

Abstract: The chambered doctor blade unit has an anilox roller against which a doctor blade can be engaged. An ink trough, and an arrangement to transport ink from the ink trough to a chambered doctor blade unit or an ink application roller is provided, the chambered doctor blade unit or the ink application roller being, respectively, operatively coupled with the anilox roller. The ink supply trough, the ink application device, the doctor blade and the ink trough form a single structural unit which is located on a carrier structure on the printing machine, to be removable as a unit. A plurality of units are severably coupled to a common ink pump shaft on the printing machine.

Abstract: A doctor blade head assembly, particularly for use in a flexographic printing press, has a head body pivoted to a support frame with an inflatable air tube disposed therebetween. The air tube extends along a channel having a bottom formed with spaced apart raised portions which cause the air tube to bulge out at these locations. In this way the air tube essentially only presses against the head body at these spaced apart locations, for example at the center and adjacent the ends, which reduces the tendency of the head body to bend along its length. This provides a more uniform ink film on the ink roll being inked by the doctor blade head assembly. End seal arrangements at the ends of the head body each include a resilient block seal and a resilient pad seal with which greased edge portions of the doctor blades slidably engage. The doctor blades overhang the ends of the ink roll, and an ink outlet passageway extends through each end seal arrangement independently of the seals.

Abstract: A doctor blade holder has two holder parts (4, 5) to clamp a doctor blade (3) with a straight edge therebetween. The holder parts define opposed holder surfaces (6, 7), which, at least in part, form surfaces of an elliptical cylinder which has a cross-sectional form in the shape of an ellipse (Z) which has a longitudinal axis (B--B) which intersects the longitudinal axis (A--A) of the cylinder by an angle of inclination (.alpha.) which, customarily, is in the order of between 0.1.degree. to 1.degree., but may be substantially larger. The minor half-axis of the ellipse (Z) is equal to the radius (r) of the printing machine cylinder (1) and the major half-axis of the ellipse (Z) is longer than the length (1) of the printing machine cylinder against which the doctor blade edge is engaged.

Abstract: The known keyless printing press including an ink feeder section consisting of an ink source roller, a transfer roller, a doctor roller, an anti-hysteresis doctor disposed on the circumferential surface of the doctor roller and the like, and also provided with a wetting device for a plate drum, is improved in order to realize a fresh condition of the ink source roller which is free from residual ink before printing ink having a uniform moisture content is applied thereto. The improvements reside in that a refresh doctor is disposed on the ink source roller at a position downstream of the nip between the ink source roller and the transfer roller for scraping residual ink from the circumferential surface of the ink source roller.

Abstract: This invention shows a reverse angle doctor blade adapted to be adjustably mounted to cooperate with the anilox roll of a flexographic printing press. The doctor blade is carried in an arcuate holder and may be adjusted angularly relative to the anilox roll in the arcuate seat and the arcuate holder itself can be adjusted toward and away from the anilox roll to control the exact parallel positioning of the doctor blade's edge against the surface of the roll.