Abstract: Mechanism is disclosed for wiping solder paste onto a printed circuit board through a stencil superposed on the board, including a first squeeges for wiping solder paste onto the stencil, a second squeegee for depositing solder paste at a location for engagement by the first squeeges and a tray, alternatively engagable with both squeeges to cooperate with the squeeges to deposit solder paste at the beginning of a wiping stroke and to pick up excess solder paste at the end of a wiping stroke.

Abstract: An improved printing machine includes a screen stencil supported over a surface of a material to be printed and having first and second ends, a squeegee which applies a force on the screen stencil as it travels thereacross, and the screen stencil having first and second ends, the first end being parallel to the squeegee sides and supported for movement forward and backward in accordance with forward and backward movement of the squeegee across the screen stencil so as to maintain the tension in the screen stencil constant on the side of the squeegee holding the ink.

Abstract: A doctor for screen printing comprises a doctor strip having a lip of elastic material intended to rest on the printing screen, as well as a soft or hard elastic backing arranged on one or both sides of the doctor strip, the doctor strip and the backing being clamped in a doctor holder extending across the width of the printing screen. To improve the ink distribution on the print pattern and the guiding of the scraper on the printing screen, and to provide a more satisfactory reproducible contact pressure behaviour or flexural rigidity under a constant angle of incidence of the scraper, the doctor strip and the backing are laminated together over substantially their whole surface area to form a composite material with layers of two different degrees of elasticity. In one embodiment, relatively soft strips are applied to both sides of a hard elastic backing to form composite.

Abstract: A profile squeegee blade is formed by forming the forward portion of a squeegee blade to create a leading cavity which extends the entire length of the squeegee blade, to define and control the shape and volume of leading ink. The ends of the profile squeegee cavity are sealed to preclude side run-off of the ink. Cavity end seals may be permanent or made as removable inserts to facilitate cleaning and manufacture. Additional control of the ink supply may be obtained through a series of weeper vent holes formed and extending between the internal cavity and the forward face of the squeegee blade, allowing the operator to maintain or release ink pressure by the blocking or unblocking of the holes. A preferred profile design extends vertically in front of the leading edge of the forwardly tilted squeegee blade, and includes a downwardly extending lip at its leading edge so as to provide forward enclosure for the cavity.

Abstract: Apparatus for off-contact screen printing in which the distance between the screen and the article to be printing upon is quickly and easily adjusted by a saingle manipulation of a lever. Advantageously, this screen adjustment is performed so that the screen remains parallel to the article and does not need to be leveled each time an adjustment is made. The apparatus includes a linkage system for holding the screen level as the screen moves up and down during the screen printing operation.

Abstract: A portable screen printing apparatus useful for printing designs, lettering, and numerals on garments and other articles containing novel screen holder assemblies which allow variable positioning of the thermal printing screen over the surface of the garment. The screen printing apparatus consists generally of a support base, four positionable screen holder assemblies hingedly affixed to a pivoting plate, an elevating plate, and a platform supporting the article to be printed on. Each screen holder assembly consists basically of a two panel telescoping frame endwardly affixed with a U-shaped channel. The channel is affixed with two thumb screws for securing the thermal frame portion of a thermal printing screen. The top telescoping panel with the U-shaped channel endwardly attached, can be extended longitudinally over the surface of the garment on the article platform.

Abstract: In a pressure head for a screen printing press, the pressure doctor consists of a doctor bracket and an elongate support rail made of a hard resilient material inserted removably therein, and a profile bar made of a soft resilient material. This profile bar is fastened to the edge of the support rail underneath in service. A bracing profile made of a hard resilient material attached to the doctor bracket is provided to brace the support rail. Where the pressure head carries, for the purpose of better ink distribution, a preliminary doctor which is lowered alternately with the pressure doctor, this preliminary doctor is of curved and pivotable construction.

Abstract: Known screen printing machines, which have a continuous support for the squeegee, have the disadvantage that the printing is impaired when the support bends. This also applies to constructions with a squeegee support which is independent of the support and the weight of which, in the case of an asymmetrical squeegee arrangement, results in an uneven loading of the squeegee. According to the invention, the support is therefore disposed rigidly at the guide rails, and pneumatic double-action cylinders are arranged directly at the support, the squeegee being fastened at the cylinders so that its angle can be adjusted. A bending off the support does not influence the printing quality, even if the squeegee is not arranged in the center of the support.

Abstract: A handle for a tool the operation of which requires frequent repetitive motions of a hand or arm of a user includes a substantially flat upper surface disposed at an angle of about 70-90 degrees to a longitudinal axis of the handle, and is characterized by an asymmetrical cross-sectional profile with respect to said longitudinal axis. The upper surface of the handle is disposed between convex portions on each side of the surface over which the plams and fingers of the user are curved.The handle is useful for tools for stressful tasks such as for a handle of a squeegee for spreading fluid on a surface of a silkscreen during printing. When the device is used as intended with the wrists substantially straight, the squeegee blade is held at an appropriate angle for silkscreen printing. Carpal tunnel injuries are generally avoided.

Abstract: A screen printing machine is disclosed which has a screen frame mounted on a swivel mount shaft. The swivel shaft for the screen frame extends through the center plane of the screen frame which extends perpendicularly with respect to the movement of the squeegee. Devices are provided which can raise the screen frame on both sides of the swivel shaft. By means of this construction, while the advantages of a compensation of errors are maintained, the screen printing machine may be used for movements of the squeegee in both directions. The new screen printing machine is particularly well suited for the printing of printed circuit boards.

Abstract: The invention relates to a squeegee arrangement which is particularly intended for use in a silk-screen printer and which comprises a squeegee (2) and a squeegee holder (4, 5). The squeegee (4, 5) is provided with a plurality of support positions (11, 12; 11a, 12a; 11b, 13b), each being intended to support a squeegee profile (2) of predetermined height dimension.

Abstract: A print head assembly for use with a screen printing machine of the carousel type having a multiple armed fixed frame and a multiple armed movable frame mounted for rotation relative thereto. The print head assembly (40) comprises: a mounting frame (45) operatively connected to an arm of the carousel. A carriage (44) is operatively connected to the mounting frame (45) and arranged for reciprocating movement relative thereto along a path of travel. Drive means is provided for causing the reciprocating movement, the drive means comprising a piston/cylinder assembly (41) including a cylinder (43) having a longitudinal axis, and opposed ends with a piston rod (42) extending from one of those ends there being a region defined between the lateral axes at respective ends of the cylinder (43) these lateral axes extending at right angles to the longitudinal axis of the assembly.

Abstract: In a screen printing cylinder press, the combination comprises:a cylinder having a gripper thereon to grip a sheet,a screen printer including a movable screen printing carriage for applying ink to the sheet on the cylinder;a lever connected to the cylinder and screen printing carriage to move the same through a stroke of given length;a cam having a predetermined profiled cam surface and a cam follower for following the cam surface and connected to the lever to actuate the lever to rotate the cylinder and to reciprocate the screen printing carriage; andadjustable stroke device in said lever for adjusting the stroke of the lever from a given length of stroke, thereby changing the length amount of rotation of the cylinder and the travel of the screen printing carriage.

Abstract: A vertical screening apparatus for simultaneously screening each side of a printed circuit board. The boards are transported from a feed assembly, into a position between two pivotally mounted screens where they are printed, then to an output assembly. Both sides of a board are printed simultaneously by means of flood blades and squeegees operating on the two screens to press them into contact with a board.

Abstract: A doctor for screen printing comprises a doctor strip having a lip of elastic material intended to rest on the printing screen, as well as a soft or hard elastic backing arranged on one or both sides of the doctor strip, the doctor strip and the backing being clamped in a doctor holder extending across the width of the printing screen. To improve the ink distribution on the print pattern and the guiding of the scraper on the printing screen, and to provide a more satisfactory reproducible contact pressure behaviour or flexural rigidity under a constant angle of incidence of the scraper, the doctor strip and the backing are laminated together over substantially their whole surface area to form a composite material with layers of two different degrees of elasticity. In one embodiment, relatively soft strips are applied to both sides of a hard elastic backing to form composite.

Abstract: A screen printing apparatus includes a mesh screen mounted on screen frame, a wiper carrier reciprocably mounted above the screen, and a drive shaft mounted laterally of the wiper carrier and extending in the direction of reciprocable movement of the carrier, the wiper carrier being journaled on and guided to move along the shaft and being pivotable about the shaft.

Abstract: A screen printing machine includes a lifting block liftably provided relative to a movable block. The movable block is reciprocatingly movable in a horizontal direction above a screen disposed on an article to be printed. A printing member includes at least one of a scraper and a skid mounted to the lifting block to facilitate screen printing by extruding ink on the screen. Mounting structure pivotally supports the lifting block so as to be displaceable in a widthwise direction of the lifting block so that the printing member can automatically follow the upper surface of the screen even though it is inclined.

Abstract: A screen printing method wherein a flat article that is to be printed, printing material for example, is laid out on a printing table and secured if necessary by vacuum, a screen with a stencil that has printing ink on its upper surface is lowered with its lower surface against the article, a squeegee is scraped over the upper surface of the stencil to force ink through the screen and onto the article, the stencil is lifted, and the printed article is removed from the table. An ionizing electrode supplied with direct-current voltage is moved along with the squeegee.

Abstract: A screen printing machine has a plurality of stationary printing head frames each with a bell crank linkage suspending a framed screen mounting assembly for parallel movement of the screen into and out of engagement with a pallet supported article to be printed. The head frames are integrated into the machine structural frame in both a rotatable pallet embodiment and a linear web embodiment. Separate actuators are carried by a carriage, the latter being moveable along the head frame from one end to the other, the actuators being arranged to lower and raise separate flood bars and squeegee blades, correlating the up-and-down movement of the flood bars and squeegee blades with the raising and lowering of the screens.

Abstract: A specialized clamp fits on to a screen frame in a screen printing press of the type having a frame clamping arm that pivots towards a platen during printing operations. The clamp has a passage located to receive a conforming register pin that extends from the platen to assure that the screen registers precisely at a predetermined area of the platen including in instances where the frame guide structure to the press itself may exhibit significant play. The clamp is initially engaged on the pin but not tightened enabling the screen frame to be shifted to register with the desired area of the platen. The clamp and clamping arm are then tightened to provide for repeatability of the registration. The clamp may then be used, during set up, to seat a succession of adhesive coated register pins at corresponding locations on a series of additional platens.

Abstract: A screen printing apparatus and method for forming printed wiring on a board. The apparatus comprises a holder for holding the board upright in posiiton, and a printing device arranged vertically for at least one surface of the board as held in position by the holder, the printing device including a spatula-like squeegee, a screen, a first scraper in the form of a spatula for scraping ink from the front surface of the screen remote from the board and a second scraper in the form of a spatula for scraping ink from the rear surface of the screen adjacent the board, the first scraper and the second scraper being mechanically drivable at the same time to scrape the screen with the first scraper positioned below or above or at the same level as the second scraper, the squeegee being mechanically drivable for squeegeeing ink on the front surface of the screen after the first and second scrapers scrape the screen.

Abstract: A screen printing press carriage is reciprocated by an adjustable stroke lever connected through a cam follower to a cam profiled to cause the carriage to accelerate to its maximum velocity in each direction of travel in substantially less than fifty percent of the travel time in that direction and decelerating over more than fifty percent of the time in each direction.

Abstract: A doctor for a flat screen printing machine, shaped as an elongated vessel with variable cross-section along its length, is symmetrical to the vertical axis Z. The height of the vessel is greatest at the point of the Z axis, where there are attached to it a flexible hose for supply of printing paste and a flexible hose for air draw-off. The cross-section of the doctor is an isosceles trapezium, turned with its smaller base towards the flat screen. On this base there is fastened a T-shaped lug onto which there is mounted a U-shaped applying profile made of friction material. In the center of the small base of the trapezium, the T-shaped lug and the U-shaped applying profile there is shaped along the length of the vessel a metering slot.

Abstract: A silkscreen printer (1) constructed for printing one and the same pattern by squeegee movement in two mutually opposite and mutually different directions. The silkscreen printer comprises a printing table (2) which is held stationary in relation to the printer chassis (3), a stencil (4) accommodated in a frame (5) above the printing table, and a squeegee arrangement (6, 6') which is arranged for reciprocal movement along the stencil, therewith to press ink through the stencil (4) and onto print material (7) placed on the printing table, such as to transfer the pattern of the stencil (4) onto the material (7). One side of the stencil frame (5) is provided with a first pivot device (8) which is intended for pivotal co-action with a first pivot pin (9) when printing is effected by squeegee movement in a direction towards the first pin (9).

Abstract: The machine is used, for example, in the production of printed circuits.The frame (5) supporting the screen cloth (3) is moved in a plane which always remains approximately parallel to the plane of the circuit (2) to be printed, and the machine is equipped, in each corner of the frame, with a tracer (9) which detects an exact height of the cloth (3) and which commands independently in each corner the stopping of the means (7, 8, 10, 17) for the lowering of the frame, so as to establish a reference height, on the basis of which fine adjustments can subsequently be programmed.

Abstract: An improved screen printing machine includes a screen held over a surface to be printed, a squeegee, a drive assembly which moves at least one end of the screen along a locus that enables substantially uniform maintenance of the length of the screen as well as the snap-off angle formed between the screen and the plane of the surface on the side of the squeegee opposite to where the squeegee carries its inking edge at the lower end thereof so as to provide substantially no dimensional deviation from the original and with enhanced uniformity in the thickness of the ink that is transferred.

Abstract: A knife drive for spreading and thrusting ink through printing matrices of silk-screen printing machines includes first drive members adapted to impart on knives parallel reciprocating movements to a related matrix and comprising at least one plate element reciprocable parallel to the matrix itself, a through-going slot formed in the plate element and parallel to the matrix, and a pin through-penetrating slidingly and rotatably the through-going slot and engaging the knives, and second drive members adapted to impart on the knives up and down movements with respect to the matrix and comprising a guide rigid with the plate element, extending in a transverse plane to the pin and along a transverse direction to the through-going slot, and a small lever attached transversely to the pin and engaging slidingly with the guide.

Abstract: A screen printing apparatus capable of uniformly applying a paste onto a screen to accomplish fining of a printed pattern and formation of a fined printed pattern. The apparatus includes a pair of laterally movable printing heads alternately actuated for printing and each including a doctor plate and a squeegee which are vertically movably arranged. The doctor plates of the printing heads being arranged laterally opposite to each other on the screen. The doctor plates each serve to apply a paste onto the screen while transferring the paste on the screen and the squeegees each act ot press the screen against a printed object after application of the paste onto the screen by the doctor plate corresponding thereto.

Abstract: An improved screen printing machine includes a screen held over a surface to be printed, a squeegee, and a drive assembly which moves at least one end of the screen along a locus that enables substantially uniform maintenance of the length of the screen as well as the snap-off angle formed between the screen and the plane of the surface on the side of the squeegee opposite to where the squeegee carries its inking edge at the lower end thereof so as to provide substantially no dimensional deviation from the original and with enhanced uniformity in the thickness of the ink that is transferred.

Abstract: A screen printer is provided with a pivotally mounted substrate support plate or screen leveling members, each of which is operable to dispose a portion of the screen forwardly the wiper applicator into parallel relationship with and into close proximity to the surface of a substrate as a wiper applicator moves across the screen.

Abstract: A screen printing apparatus comprising a screen having an opening or openings of a desired print pattern and having a lower surface being positioned adjacent to a substrate to be printed, and a nonflexible squeegee comprising a cavity for containing a material to be printed on the substrate. The cavity is defined by the interior surfaces of surrounding walls extending generally vertically from the lower extremities at which the squeegee directly contacts the upper surface of the screen. While the squeegee travels with respect to the screen the material to be printed flows from the cavity into the openings of the screen, and thereby onto the substrate. The squeegee may be formed of stainless steel, a ceramic material or a synthetic resin.

Abstract: A flat frame is arranged to reciprocate vertically and parallel to the travel strokes of two overlying carriages, namely a screen support carriage and an ink knife support carriage respectively. On the free end of the frame a mandrel is provided for longitudinally gripping the objects to be. A spindle is provided with a toothed element at its rear end which is rotatably mounted by of its own pivot on the ink knife support carriage.The pitch circle diameter of the toothed element coincides with the diameter of the receiving cylindrical surface of the objects to be printed, and the toothed element is in constant engagement with a further toothed member on a lower side of a screen support carriage.The device is suitable for silkscreen printing machines in general, and especially for printing cylindrical objects having an elliptical cross-section.

Abstract: A method and apparatus for screen printing a sequence of accurately registered images on a plurality of sheets or objects such as T-shirts use a primary register platen supported by a platen support table. The primary register platen may be moved in a horizontal plane relative to the platen support table, and repositionably secured thereto. Each object to be printed is temporarily fastened to separate secondary register platen, which may be quickly placed in a precisely repeatable overlying relationship to the primary register platen, and quickly removed therefrom. The apparatus includes a transparent register plate which may be quickly placed in an overlaying relationship to an object on a secondary register platen, in a precisely repeatable position relative to said platen support table, and quickly removed therefrom.

Abstract: A squeegee assembly is provided with selectively adjustable stiffness for the squeegee blade to control the deflection of the squeegee blade and thereby the position of the leading edge of the blade when it is under pressure and forcing ink through a screen printing fabric. The preferred adjustment is achieved by a vertically movable clamp having front and rear plates engaging the front and rear faces of the squeegee blade. The clamp is moved up or down the squeegee blade to adjust the stiffness of the blade by moving the plates vertically. Preferably, the plates are at a fixed spacing with a lower end on the rear plate located below the lower end of the front plate. Fasteners clamp the plates to an upper holder and clamp the lower ends of the plates against the squeegee blade.

Abstract: A compact machine consistently prints sharp, silk screened images on balloons. This is accomplished by a machine with a rotatable table and a number of operating stations located around the perimeter of the table. One station inflates the balloons to a predetermined size. At a print station a silk screen is lowered onto the balloon and a wiper makes a single pass across the screen to print on the balloon. (On the succeeding balloon the wiper will move in the opposite direction.) The wiper moves in a direction transverse to the usual orientation of lines of print on a balloon. The single pass printing and the direction with respect to the usual printed image orientation assure sharp images over extended printings. The balloon remains inflated and dries for about the next one-half rotation of the table, and it is then discharged onto a conveyor where infrared heat shrinks it to its original size.

Abstract: A screen printing press includes a main frame, a generally horizontal printing bed supported on the frame and a rectangular printing frame or head which is pivotal between a first, generally parallel printing position to a second, angled flood position. A squeegee and flood bar carriage is supported for reciprocating movement along the printing frame. The carriage includes a flood bar support member and a squeegee support member. The support members are engaged by a shifting plate which is pivoted to the carriage. A flipper rod assembly engages a sliding follower which is fixed to the shifting plate. The flipper bar assembly is pivoted to the printing frame. An actuating rod or tongue engages a shifting bracket fixed to the main frame of the press. Pivotal movement of the press alternately raises and lowers the flipper bar to alternately raise and lower the flood bar and squeegee support members.

Abstract: A screen printing method and apparatus in which the ink pressure is held constant by varying the squeegee speed and/or the squeegee angle during a print stroke. In one method, the squeegee velocity v and/or squeegee angle .alpha. are controlled such that v times the square root of the amount of ink A on the screen before the squeegee, divided by the square of the sine of .alpha., is substantially constant. In another approach, the pressure is directly measured and held constant during the print stroke. The quantity A may be determined as a linear function of the squeegee position during the print stroke. A screen printing apparatus is provided having a squeegee with a planar surface and a contact edge at the lower edge of the planar surface. The squeegee is mounted such that it can be rotated about the contact edge, to thereby vary the squeegee angle without changing the elevation of the contact edge.

Abstract: In printing an image on a web of material by a screen printing operation, the screen printing stencil is arranged at an acute angle relative to the path of movement of an impression cylinder operable to press the web of material against the stencil. During the printing operation the stencil is lifted approximately perpendicularly to the line of the path of movement of the impression cylinder and is simultaneously displaced parallel to its own main plane over a distance whose length depends on the angle of inclination of the stencil relative to the path of movement of the impression cylinder. In order to adapt the length of the print image on the stencil to a predetermined length on the web of material on which an image is to be printed, the extent of the parallel displacement of the stencil may be varied in accordance with the difference between the length of the print image on the stencil and the predetermined length for the image to be applied on the web of material.

Abstract: The present invention relates to a silk-screen printing machine provided with a reciprocatingly movable squeegee arrangement adapted for printing in both directions of squeegee travel, when caused to move over a stencil placed over a material to receive print resting on a printing table. A frame incorporating the stencil is included in a frame assembly comprising an outer and an inner unit. The two units are joined together at one edge part of the printing table. Both of the units can be raised and lowered at one edge part of the printing table, while only one of the units can be raised and lowered at the other, opposing edge part of the printing table.

Abstract: A squeegee arrangement for use with silkscreen printers includes a squeegee and an arrangement for effecting relative movement between the squeegee and a stencil. The squeegee may be raised and lowered away from and onto the stencil. The squeegee and the raising and lowering arrangement are carried by a carrying device (6). The carrying device is rotatably supported at its end parts. An arrangement is also provided for varying the setting angles of the squeegee in relation to the stencil.

Abstract: A master frame assembly for use in a screen printing press carries an upper seal means to seal directly to a screen printing frame to provide an enclosed sealed chamber within the screen frame to contain solvents associated with the ink within the sealed chamber. The preferred upper seal means includes a traveling cover sheet which is pressed directly into sealing engagement with the underlying screen frame about all four sides of the screen frame. Mounted on the master frame are side seal bars for pressing the traveling marginal edges of the sheet against the underlying sides of the screen frame. These side seal bars are adjustably and movably mounted on the master frame so that they may press the traveling cover sheet against the sides of each of several different widths of screen frames.

Abstract: A silk-screen printer wherein the clamp holding the silk screen may be adjusted along X, Y and Z axes.The screen is held on an arm secured to a cylindrical post by an anchor plate. The anchor plate is pivoted by means of adjustment bolts that extend through the plate into contact with the cylinder surface.

Abstract: The present invention relates to a squeegee arrangement for silkscreen printing machines, comprising two squeegees arranged side-by-side and made from a somewhat flexible material, and respective squeegee holders. The squeegees (5,5a) are arranged to move relative to a stencil (3) having a printing pattern provided thereon and located above a material substrate (4) to be printed upon. The squeegees are arranged to press print-forming substance (10) through the stencil (3) and onto the material substrate (4) during this relative movement. A plane extending centrally through respective squeegees forms an obtuse angle with the stencil and the material substrate in relation to the directional plane of squeegee movement. The centrally located planes of the two mutually adjacent squeegees (5,5a) subtend therebetween an angle of less than 120.degree., and greater than 60.degree.

Abstract: A screen printing machine comprises a support frame comprising vertical and horizontal members and having a rear side, a front side spaced horizontally forward therefrom, and a plurality of stanchions projecting upward between the front and rear sides and an auxiliary frame lying and horizontally movable on the stanchions and projecting forward past the front side of the support frame. A screen is clamped to the auxiliary frame so that the screen is cantilevered on and projects forward beyond the front side of the support frame and lies fully forward of the front side of the support frame. A platen disposed below the screen and forward of the front side of the support frame is pivotal on this support frame at its rear side about a pivot axis so that the platen projects wholly beyond the front side of the support frame and access to the platen and the screen is afforded on all sides thereof except for rear edges of the screen and the platen which are proximal to the support frame.

Abstract: Multi-colored designs are applied on a plurality of textile fabric or sheet materials with a silk screen printer having several platens arranged in two horizontal rows below a longitudinal heater which is movable across either row. The textiles, such as articles of clothing, are placed over respective platens and secured in pivotable hold down frames. A silk screen with a desired design is secured in a screen frame having a corner registration guide and is positioned against a main registration guide affixed to the hold down frame to align the design on the article. The color ink material is applied with a squeegee through the screen onto the article, and this is repeated manually with the same screen frame and design successively at each platen for several like articles.

Abstract: A squeegee is utilized in a screen process printer for microcircuits and components thereof. The type is one in which the squeegee and a flat stationary screen are mounted with the squeegee movable and in a wiping action makes contact with the screen so as to press a paste through openings of the screen in a predetermined pattern onto an adjacent substrate. The squeegee comprises a cylindrically shaped object of a predetermined length having a surface covering made of a resiliently deformable material. Further, the squeegee has an external cross-sectional geometric pattern such that a first surface is pushed against the paste in the wiping action. A lower edge of the first surface is above the surface of the screen a predetermined distance, and the first surface is at a predetermined fixed angle with the screen thereby causing a spreading action of the paste on the screen surface.

Abstract: A machine for applying a configuration of reinforcement/stiffening or decorative material in powder form to a receiving surface, for subsequent fusing, cooling and pressing to a substrate such as a shoe upper. The machine comprises a deposition station, a heating station and a press station. A tensioned receiving belt receives the configuration of powder through a cut-out in the bottom of a swept screen frame. The receiving belt is supported from beneath during the deposition activity to control the thickness of the powder deposit. The receiving belt is shuttled in a displaceable frame in a series of steps to the successive stations for melting the powder and subsequent cooling and adhesion of the melted powder to the substrate such as an unreinforced shoe upper.

Abstract: A manually operated silk screen printing apparatus having a printing bed and a chase overlying the printing bed for removably mounting a screen in alignment with the overlying printing bed. Preferably, a single ball-shaped handle or joystick is mounted on the top of the squeegee carriage for pushing or pulling to slide a squeegee carriage mounted on a lever arm over the center of the screen. The carriage travels on a three-point bearing arrangement with a guide or track surface on the lever arm. Flipping of the handle through an overcenter position reverses the squeegee and the carriage for the respective flood and print strokes. More specifically, the lever arm includes a generally horizontal guide track overlying the chase and extending approximately the length of the screen. The guide track is centered with respect to the chase and guides the carriage.

Abstract: A squeegee head for the printing of bodies by the screen printing method, the head including a squeegee rubber and a holder for retaining the rubber, the holder comprising a plurality of adjacently arranged holder members which are each guided in the squeegee head for mutually independent reciprocating movement in the contact direction, and are held under a contact force.

Abstract: A printing machine for webs of paper or the like has a flat horizontal screen which is stationarily but removably mounted in the machine frame above the path of intermittent longitudinal movement of the web. A hollow air-permeable counterpressure cylinder is mounted below the path of the web and is reciprocable relative to the screen with a carriage which further supports a printing medium applying unit at a level above the screen. The cylinder is rotated during the printing stroke while a first squeegee of the applying unit forces printing medium through the screen and into contact with the web. During the next-following return stroke, the cylinder is held against rotation and a second squeegee of the applying unit spreads out the printing medium on the screen. At the same time, the web is advanced forwardly through a preselected distance.