Abstract: A method and arrangement in doctoring in a paper or board machine is disclosed in which the web travels through at least one press nip, in which the press nip is formed by at least a press roll and its backing roll and in which at least one roll is doctored using at least one doctor device. The press roll is doctored essentially over the width of the web.

Abstract: A doctor for a suction roll in a paper machine is intended to remove water from a suction roll. The doctor includes a doctor slat fitted against the surface of suction roll extending essentially over the entire width of the suction roll, as well as the doctor slat holder and loading devices. In the direction of rotation of the suction roll, there is a doctor blade, with a blade holder fitted to the doctor after the doctor slat. The doctor blade is arranged to remove the water lifted off the suction roll by the doctor slat.

Abstract: The present invention relates to a calender roll cleaning apparatus for smoothing a surface of a magnetic layer of a magnetic recording medium passed through a plurality of calender rolls. The cleaning apparatus comprises a wiping cloth feeding apparatus that feeds a calender roll surface wiping cloth at a definite rate and tension. A cleaning liquid supplying apparatus supplies a controlled amount of cleaning liquid such that the cleaning liquid permeates into the wiping cloth fed from the wiping cloth feeding apparatus. A wiping cloth pressing apparatus presses the permeated wiping cloth at a controlled pressing load.

Abstract: A cleaning blade for use in an electrophotographic apparatus, which rubs and eliminates residual toners. The cleaning blade is made up of polyrethane resin sheet controls chipping of a top end of the cleaning blade and reduces an abrasion of a photosensitive drum. The cleaning blade is prepared by mixing and hardening at least a prepolymer, which is obtained from butylene adipate polyester polyol, hexylene adipate polyester polyol and polyisocyanate, and a hardening agent including a low molecular weight polyol and potassium acetate so that a mol ration (&agr; value) of hydroxyl group to isocyanate group becomes not less than 0.7 and not more than 0.9.

Abstract: In order to strip a film-like coating having toner residues, abrasion and paper dust from an intermediate carrier (for example, a photoconductor), a cleaning unit is provided that is planarly executed and bent such that first and second surfaces and a rounded-off bending region arise. The cleaning unit has its first surface arranged parallel to the intermediate carrier such that the coating runs through under the bending region and then between the first surface and the intermediate carrier, so that the toner contained in the coating loosens the coating from the intermediate carrier.

Abstract: The invention relates to an apparatus comprising a holder (2) for a doctor blade and a blade (1) to be fitted in the holder for use in a paper or board machine. The holder (2) and/or the blade (1) comprises a composite material of whose surface or on a part of whose surface a ceramic coating (6) has been made.

Abstract: A doctor blade is provided that is suitable for use in the manufacture of paper, particularly for use in calenders. The doctor blade includes a plurality of serrations in the leading edge.

Abstract: The invention relates to band-like doctor blade assembly, a doctor blade and a method in the use of the doctor blade. The doctor blade assembly includes continuous and substantially infinite doctor blade that is placed in a reel, the doctor blade is then fed into a blade holder. The blade holder includes locking devices in its connection for locking the doctor blade in the blade holder. The continuous and substantially infinite doctor blade has a plurality of edge notches formed along an edge thereof and the doctor blade is fed over a length substantially equal to the distance between the edge notches, while the notches are placed, during the operation of the doctor blade, at both ends of the blade holder and permit bending of the continuous band-like doctor blade.

Abstract: A composite doctor blade is provided that is suitable for use in the manufacture of paper, particularly for use in calenders. The composite doctor blade includes multiple layers of composite material in which a substantial proportion of the fibers are aligned in a direction substantially parallel to the long axis of the doctor blade.

Abstract: There are provided a solution applying portion 104 disposed opposite to the outer surface of the recording rotational drum 34 such that sliding on the outer surface of the drum is permitted and arranged to apply cleaning solution to the outer surface of the drum; and a scraping portion 108 disposed at a position more forward than the solution applying portion 104 in a direction in which the drum is rotated such that sliding on the outer surface of the drum is permitted and arranged to scrape the applied cleaning solution off the outer surface of the drum so that dust X is removed from the surface of the drum.

Abstract: A doctor blade for removing water from a mating member, such as a grooved elastic belt in the press part of a papermaking machine, comprises a resin-impregnated fibrous laminate, in which at least a part of the warp of a base material in the laminate, which comes into contact with the mating member, is brush-shaped, so that the warp enters the insides of the grooves to remove water therefrom.

Abstract: A wiper control device in which an abnormal condition of a FET is detected by distinguishing an action of an overheat-cutting protective function normally difficult to be detected with measuring the drain voltage of the FET and by which the control of the pertinent FET is restrained upon the detection of abnormality so as to prevent a short circuit in the wiper control device from occurring. When an FETB (Qb) is set on, whether or not a drain voltage Vd is lower than Vpe ({fraction (l/2)}VG) is judged (step S5), and if lower, it is judged that the drain and ground is short-circuited, that is, an overheat-cutting protective function is acted, and “1” is added to the number of times of short circuit detection Perror (step S7). It is judged whether or not the added value of the number of times of short circuit detection Perror reaches a reference value (step S11).

Abstract: Apparatus for cleaning a curved surface by employing the cloth principle, the apparatus having a roll for unsoiled cloth with unused cleaning cloth thereon, a roll for soiled cloth for taking up used soiled cloth, a pressing element for pulling unsoiled cleaning cloth off the roll for unoiled cloth and to bring it in contact with a surface to be cleaned by a movement of the element toward the surface, and means for pulling cleaning cloth off the roll for unsoiled cloth and for rolling soiled cloth up on the roll for soiled cloth by rolling up a part of the cleaning cloth that is longer or equal to the part thereof that is removed by the pressing element from the roll for unsoiled cloth independently of the respective diameters of the rolls for soiled and unsoiled cloth.

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: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side file. The blade also includes an upper surface adjacent to the first and second side faces. A plurality of notches is provided along the upper surface. Each of the notches has a bottom portion and an open end defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Creped paper and improved methods of manufacturing paper are also provided.

Abstract: A cleaning device for printing machine cylinders and bearings (2, 60) for this for the rotatable mounting of a cloth spindle (4, 92) for a cleaning cloth. At least one of the bearings (2, 60) has a bearing bush (14, 64) which is provided with an external thread (16, 66) and which can therefore be screwed into an internal thread (17, 67) of a side part (20, 70).

Abstract: A conveyor belt cleaner including one or more scraper blades and a scraper blade mounting assembly for removably mounting the scraper blades to a support structure. The scraper blades include a mounting base formed of elastomeric material having a generally T-shaped mounting flange and an arm. The scraper blade also includes a metal scraping element having a generally planar lower portion and a generally planar upper portion that are disposed at an angle to one another. The lower portion of the scraping element is embedded within the arm. The upper portion of the scraping element includes a scraping tip adapted to engage a conveyor belt and that is pivotal about a pivot axis that is offset from a plane containing the upper portion of the scraping element. The mounting assembly includes a cross shaft that is adapted to be mounted at each end to a support structure by a slide bracket having a support ridge.

Abstract: Feeder systems are mechanical systems that feed individual sheets of paper to other mechanical devices. Feeder systems need to be able to handle a variety of types of paper with different weights and finishes. Glossy paper has proven difficult to feed because of anti-offset agents used in the printing process. The agents contaminate the rollers in the feeder system causing misfeeds and jams. The present invention is a cleaning apparatus that can be used in conjunction with the feeder system to keep the feeder system free from malfunctions during the processing of glossy paper. The cleaning apparatus includes a cleaning head mounted on a supporting arm. Various types of abrasive cleaning heads can be employed in the cleaning apparatus such as metal blades, meshes and brushes. The cleaning heads keep the rollers operational while minimizing deterioration of the roller.

Abstract: A composite composition to be used in a doctor blade construction, said composite laminate construction comprising: (a) one or more central layers comprising an engineering thermoplastic resin filled with heat-resistant, non-glass, long strand fibers; (b) one or more intermediate layers positioned over the one or more central layers, each said intermediate layer comprising a carbon layer; and (c) one or more surface sheets positioned over the one or more intermediate layers.

Abstract: A cleaning device (1) having a guide rail (3) with a longitudinally moveable carriage, to which carriage (4) a washing apparatus (5) is releasably affixed. The guide rail (3) is positionally adjustable for operationally placing the washing apparatus (5) at a printing cylinder (2). The washing apparatus (5) is connected to a supply unit by means of supply lines. The supply lines extend within the guide rail (3) from the washing apparatus (5) to a stationary connection position (7). The guide rail (3) includes a suction wastewater channel (14) which is placed between an upper section (15) and a lower section (16) of a movable belt (19) which is designed for the reciprocal transport of the carriage (4). A belt (19) section (15) forms a cover for the suction wastewater channel (14).

Abstract: A strapping tool includes an integral, removable cleaning element. The strapping tool forms a seal between two portions of associated strapping material, which strapping material is tensioned by a feed wheel prior to forming the seal. The tool includes a strapping machine body, a subassembly operably coupled to the strapping machine body. A feed wheel is carried by the subassembly and is rotatable within the subassembly. A feed lever is operably connected to the subassembly and to the feed wheel for rotating the feed wheel. A cleaning element is supported by the subassembly and is disposed for continuous contact with the rotating feed wheel.

Abstract: There is disclosed a pressure pad used in an apparatus for cleaning the outer surface of a cylinder with a cleaning fabric. The cleaning fabric is directed between the pressure pad and the cylinder, the pressure pad having opposite side edges which are fixed in the apparatus to extend parallel to the cylinder. The pressure pad is made of elastomer and curved between the opposite side edges thereof to be convex toward the outer surface of the cylinder. The pressure pad cooperates with the cleaning fabric so that the cleaning fabric can be pressed against the outer surface of the cylinder by the pressure pad to clean the outer surface of the cylinder. The pressure pad comprises an engaged portion engaged with the cleaning fabric so that the cleaning fabric is sandwiched between the engaged portion and the cylinder to be pressed against the outer surface of the cylinder.

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 method of cleaning a semipermeable membrane, the semipermeable membrane being configured for carrying a fiber web, includes the steps of providing a cleaning fluid and applying the cleaning fluid on the semipermeable membrane. Further, an air press configured for carrying the semipermeable membrane therethrough is provided, and the air press has pressurized air therein. The semipermeable membrane is conveyed through the air press and is subjected to the pressurized air within the air press. The pressurized air thereby flushes the cleaning fluid through the semipermeable membrane.

Abstract: A doctor blade for removing water, which excels in water removal capability and shape retention capacity, and suppresses abrasion of the belt or other mating member with which it cooperates, is a fibrous laminate comprising integrated base material and batt fiber layers. By impregnating resin into one side of the fibrous laminate, a layer in which the amount of impregnated resin is large and a layer in which the amount of impregnated resin is small are provided. In use, the layer in which the amount of resin is small is in contact with a belt or other mating member. The doctor blades can be adapted to the mating member easily, and excel in the water removal capability and shape retention, and suppress abrasion of the mating member.

Abstract: In a doctor blade, which suppresses abrasion of a mating member and excels in water removal capability and shape retention capacity over a long time, resin is impregnated into a fibrous laminate composed of base materials and batt layers integrated by needle punching, and an adjustment is made so that the void content is between 50% and 80%.

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 web cleaning system including a stationary frame and a rotatable frame being rotatable about an axis while supported by the stationary frame. The rotatable frame supporting first and second contact cleaning rolls that are rotatable about axes and are spaced from and parallel to each other and the axis of the rotatable frame. A web transport device is disposed to fed a web along a predetermined path between the first and second contact cleaning rolls. Major surfaces of the web being parallel to the axes of the cleaning rolls when fed therebetween.

Abstract: A gumming applicator (1) rotatable about a central axis (A) is cleaned by a device (4) comprising a nozzle (13) connected to a source (11) of pressurized fluid (50) and calibrated so as to deliver an atomized jet (14) which is directed at the gumming applicator (1) to the end of removing residues (60) of the gumming adhesive (2) from the applicator (1); the nozzle (13) is also capable of movement in a direction (D) parallel with the axis (A) of rotation of the applicator (1).

Abstract: The invention relates to a method of and a device for cleaning a slip ring which is rotatable about an axis of rotation, is supported by a frame and a circumferential surface of which is provided with a signal or power track which extends so as to be concentric with the axis of rotation. A chamois cloth drenched in a liquid is pressed against the circumferential surface provided with the track and the slip ring is rotated while the chamois cloth is kept pressed against the circumferential surface. The device includes a support which is to be connected to the frame supporting the slip ring and in relation to which the chamois cloth can be fixed. The support includes a pressure strip for pressing the chamois cloth against the circumferential surface of the slip ring provided with a track.

Abstract: A cleaning device includes a cleaning member for cleaning a surface of an image bearing member while it is moving; holding means for holding the cleaning member; vibrating means which per se is vibratable; control means for controlling operation of the vibrating means; wherein the holding means is movable toward and away from the image bearing member; the vibrating means is held on the holding means; and the control means actuates the vibrating means upon stop of movement of the image bearing member.

Abstract: A cleaning blade has a fixed end and a distal cleaning end, with the fixed end maintained in a substantially fixed position. The cleaning blade has a blade cleaning surface arranged for facing a photosensitive element surface of a moving photosensitive element, with the cleaning end arranged to contact and clean the photosensitive element surface. The cleaning blade has a blade temperature. The cleaning blade includes at least one heater for maintaining the blade temperature at a fixed temperature.

Abstract: An operational sequence including a cleaning of a processing device shifting to the standby state in the process of shifting from a printing operation to a standby state of a liquid electro-photographic device of a tandem type is performed well. A processing device has a squeeze roller for performing removal of residual liquid developer from an image formed on a photoconductive belt 2 and for forming an image into a film and is removed in order that the squeeze roller 6 shifts from the state having a clearance from the photoconductive belt 2 to the state being pressed against the photoconductive belt 2 for performing a removal of the liquid developer remaining on the squeeze roller 6 to the photoconductive belt 2 in sequence when the image forming operation is finished after cleaning the liquid developer adhered on the squeeze roller 6, and the removal proceeds sequentially from a processing device on a downstream side of a traveling direction of the photoconductive belt 2.

Abstract: Feeder systems are mechanical systems that feed individual sheets of paper to other mechanical devices. Feeder systems need to be able to handle a variety of types of paper with different weights and finishes. Glossy paper has proven difficult to feed because of anti-offset agents used in the printing process. The agents contaminate the rollers in the feeder system causing misfeeds and jams. The present invention is a cleaning apparatus that can be used in conjunction with the feeder system to keep the feeder system free from malfunctions during the processing of glossy paper. The cleaning apparatus includes a cleaning head mounted on a supporting arm. Various types of abrasive cleaning heads can be employed in the cleaning apparatus such as metal blades, meshes and brushes. The cleaning heads keep the rollers operational while minimizing deterioration of the roller.

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: An arrangement for doctoring a belt or a soft roll surfacing in a paper or board machine includes a doctor set in connection with a surface with a doctor blade fitted in it for doctoring the surface. The doctor blade is at least partly of a material, the hardness of which is essentially equal to or less than the hardness of the material of the surface, in order to prevent the doctor blade from cutting into the surface. The material is arranged to form a layer extending over the entire width of the doctor blade, and the thickness of which throughout is at least half of the thickness of the doctor blade. A support construction is arranged in the doctor blade, which together with the layer is arranged to form the doctor blade.

Abstract: A multilayer composite doctor blade has a side edge configured for application to the surface of a rotating roll in a paper making machine. The doctor blade has an inner core and intermediate layers. The doctor blade may also include outer layers. The inner core is predominantly polymeric material. The intermediate layers on opposite sides of the core include reinforcing fibers. The side edge of the doctor blade has an abrasiveness as measured by ASTM test method D5181-91 of between about 4.0 to 5.0.

Abstract: A scraper blade (1, 1A) for a belt conveyor (8), the scraper consists of, or incorporates, a plurality of resilient fingers (3, 3A) adapted at one end (5) of each finger (3, 3A) to engage the belt surface (6) for scraping purposes and at the other end to be supported in suitable proximity to the belt surface (6) to be scraped, with the individual fingers (3, 3A) capable of deflection upon encountering any projection (10) such as a mound or joint of the belt surface (6).

Abstract: A capstan shaft cleaning device has a cleaning member removing dirt attached to a capstan shaft and a moving mechanism moving the cleaning member between a position at which the cleaning member contacts the capstan shaft and a position at which the cleaning member is separated from the capstan shaft, the cleaning member having at least two points of contact contacting a periphery of the capstan shaft.

Abstract: There is disclosed a cylinder cleaning brush unit including a brush roller for cleaning a cylinder. The cylinder includes an outer surface to which impurities are adhered, the impurities being removed from the outer surface by the brush roller with cleaning liquid being supplied. The brush unit comprises an opening through which effluent is discharged from the brush unit, the effluent including the cleaning liquid and the impurities. The brush unit further comprises a filter installed in the opening, the effluent being filtrated by the filter.

Abstract: “Ghosting” and leakage problems in a doctor blade assembly are minimized or eliminated in a construction that includes a reservoir (10) partially surrounding a transfer roller (12) wherein a surface of the roller (12) is within the reservoir (10) for at least 180° of its rotation. The reservoir (10) is desirably split into two segments (50), (52) which are mounted for relative movement so as to allow access to the interior of the reservoir (10) as well as to the roll (12). Chambered end plates (82), (84) house seals (10) and receive parts (144) of the ends of doctor blades (40), (42) which extend past the end (142) of the roll (112) to promote good sealing at the ends of the assembly.

Abstract: An apparatus for doctoring a roll surface including a pivot bar adapted to be mounted on a doctor back and which the pivot bar defines an upwardly projecting fulcrum. A first shelf projects forwardly beyond the fulcrum and a top plate pivotally supported on and projecting forwardly beyond the fulcrum overlies the first shelf. The top platen is held downwardly against the fulcrum. Blade support members are carried by and cooperate with the top plate to define forwardly open slots, which slots are configured and dimensioned to receive a rear edge of a forwardly projecting doctor blade. The blade support members have rearwardly projecting second shelves underlying the first shelf and a loading mechanism is interposed between the first and second shelves for pivoting the top plate on the fulcrum in a direction urging the doctor blade against the roll surface.

Abstract: A loading arrangement in a paper machine doctor includes a blade carrier, a blade holder, and loading devices to turn the blade holder in relation to the blade carrier and thus to press the doctor blade against the surface to be doctored. The loading devices include at least one operating device including longitudinally arranged loading components and a pressure medium connection extending to each of the loading components to make the profile of the doctor blade conform to the surface to be doctored.

Abstract: The invention relates to a doctor assembly in a paper machine, which is intended to clean, e.g., a roll, and which includes a surface against which a doctor blade is set, a blade support for supporting the doctor blade, a frame, a jointed bearing assembly, which supports the doctor blade and is itself supported from the frame, and which is parallel to the doctor blade, and extends essentially over the entire width of the roll, and loading devices between the blade support and the frame for turning the doctor blade in relation to the frame and for pressing the doctor blade against the surface with a selected pressure. Due to the continuous support, there is essentially no deflection in the doctor assembly, when it is attached by its frame directly to the structures of the paper machine.

Abstract: Apparatus is disclosed for handling a web including a pair of juxtaposed press rolls providing a nip therebetween, a coarse shredder trough disposed above the nip to receive the web from the nip, and a doctor arrangement for transferring the web from the outer surfaces of the press roll including a doctor support extending longitudinally of the pair of press rolls and a plurality of doctor blades attached to the doctor supports and extending in abutment with the outer surfaces of the press rolls, the doctor arrangement being supported by the coarse shredder trough whereby the doctor blades form a rigid structure for the plurality of doctor blades.

Abstract: A method of cleaning an imaged printing form having a silicone-based non-printing layer, which includes exerting a defined contact pressure by a cleaning arrangement on a printing-form surface to be cleaned, and moving at least one of the printing form and the cleaning arrangement relative to the other, further includes applying cleaning fluid to the printing-form surface to be cleaned, the cleaning fluid, besides water, containing a cleaning concentrate as a component, the cleaning concentrate having 1 to 30 percent by weight of an anionic surfactant and 1 to 30 percent by weight of a nonionic surfactant; and a cleaning fluid for cleaning a printing form.

Abstract: An image transferring device for transferring a toner image from an image carrier to a recording medium includes a belt passed over a plurality of rotary bodies for supporting and conveying the recording medium and a cleaning member for cleaning the surface of the belt in contact therewith. A dielectric layer forms the surface of the cleaning member. An image forming apparatus including the above image transferring device is also disclosed.

Abstract: A motion-defect-free assembly and a method of minimizing cleaning apparatus induced motion quality disturbances in a moving belt photoreceptor of a toner image reproduction machine are provided. The assembly for practicing the method includes at least one resilient member located to each side of the moving belt photoreceptor at a desired belt cleaning station along a path of movement of the belt photoreceptor, and a cleaning apparatus that is mounted at the cleaning station and that includes at least one separately moveable cleaning member. The cleaning apparatus also includes a moveable frame having frame locating members, and the at least one separately moveable cleaning member.

Abstract: In the paper coating operation a wet or dry edge from coating composition is formed on the, seen in the direction of movement of the paper web, downstream side of the doctor, the so-called stalagmite formation. This stalagmite formation leads to various problems in the papermaking process and especially occurs at high speeds of the paper web and/or a high solids content of the coating composition, which two operating conditions are exactly required to obtain a maximum paper yield and a high paper quality. According to the invention the stalagmite formation is effectively prevented by supplying a fluid inhibiting the stalagmite formation to an area bounded, on the one hand, by the paper web and, on the other hand, by the above side of the doctor blade.

Abstract: A card cleaning device for use in an image forming machine includes a frame adapted for installation into an appropriately configured image forming machine, a bottom card cleaning roller having a shaft removably coupled to the frame and adapted for cleaning a card being fed at an angle relative to the frame and a top adhesive roller coupled removably to the frame on top of the bottom roller for continuous cleaning of the bottom roller by means of friction during device operation. The cards are being fed one at a time at an angle relative to the frame to save internal printer space by a card feeder mechanism disposed proximate to the card cleaning device with the entering end of each card being slightly bent upon first card contact with a pair of card entry guides or a card entry guide plate coupled to the frame under the bottom roller so as to enable card feeding at an angle and prevent premature wear of the bottom card cleaning roller.