Abstract: A screen-printing apparatus having pneumatically operated clamping devices for clamping one edge of a print screen frame to the print head of the apparatus. In a screen-printing operation where multiple print screens must be quickly interchanged, efficiency of time and energy may be achieved by a manually activated pneumatic clamping device that quickly secures and releases one edge of the screen frame to the print head. The screen-printing apparatus is not limited to a single print head, and multiple pneumatic clamping devices are envisioned for as many screen print heads as are mounted on the screen-printing apparatus.

Abstract: A sealable vacuum chamber has an outlet. A template within the chamber includes flow guides for guiding colorant under vacuum across and into porous material when in contact therewith toward the outlet to create a pattern in the porous material. The flow guides allow for at least slight variation in the pattern without being altered.

Abstract: A vacuum print system comprising: an outer shell to define an airtight inner space and having a closure door at a ceiling thereof; a printer provided in the airtight inner space; a worktable to supply a work to the printer provided in the airtight inner space operable to move; and an air exhaust system connected to the airtight inner space is disclosed. The worktable is operable to move between a sealing position and a work supplying position. The worktable at the sealing position divides the airtight inner space into two airtight compartments, a first compartment having the closure door, and a second compartment having the printer provided therein and the air exhaust system connected thereto. The worktable at the work supplying position supplies the work to the printer. Further, the closure door is operable to open to take the work in and out when the worktable is at the sealing position.

Abstract: A quick release pallet for a screen printing machine in which the pallet has locating recesses at either ends which locate the pallet on the pallet arm of the screen printing machine by engaging locating lugs on the pallet arm. A toggle clip secures the pallet in position. The advantages are that the pallet has no attachments and can be very quickly positioned and released. Because there are no screw holes in the top surface of the pallet it has a larger print area. The pallet can be modified to a vacuum pallet with a perforated or porous top plate and a vacuum manifold connected to the base plate and air spaces being provided by machined channels in the base plate or a mesh interposed between the base plate and the top plate.

Abstract: A printing apparatus that includes a table and screen plate positioned facing each other. A screen sealing unit is provided to ensure that a relative hermetic seal is achieved between the screen plate and the table. The sealing unit and table are movable, the sealing unit being movable along the table to adjust for various work pieces utilized in the screen. A gas is provided between the sealed table and screen plate to aid in printing.

Abstract: Printing apparatus for objects to be printed, in particular textile objects, ceramic, paper, plastic or the like, having a circular indexing table which rotates about a vertical axis and has a rotary drive, having at least one pallet carrier arranged on the circular indexing table and in each case having a pallet that can be arranged on the pallet carrier, at least one printing unit arranged above the pallets circulating around the vertical axis, the printing unit and the pallet being arranged such that they can move relative to each other in the vertical direction, and the pallet carrier arranged on the circular indexing table assuming a plurality of electrically indexable, stepwise predefinable rotary positions with respect to the printing unit.

Abstract: A silk-screen printing machine in simplified register comprising a bearer structure (12) on which a silk-screen printing frame is arranged, elements in register (18) of the position of a sheet element to be printed (15) in a supply plane (14), means (34) for detecting the position of the sheet in register (15) and at least one pincer-carrying rod (16) suitable for pulling the sheet (15) on a printing plane (13), is equipped with a group for registering the sheet (15), which is arranged upstream of the pincer-carrying rod (16) and comprises a transversal plate (17) for supporting the sheet and able to translate towards the pincer-carrying rod (16), a plurality of the mobile elements in register (18) suitable for interacting downstream of the plate (17) with the supply plane (14) of the sheet and a plurality of presser elements (19) arranged in a position above the support plate (17) and mobile towards it to engage the sheet (15).

Abstract: Screen printing to an edge of an object without the flow of print ilk over the edge and to a supporting platen is realized by applying a flow of gas from the platen over the edge of the object and opposing the flow of print ink. The platen can have a support surface including a groove or a plurality of holes arranged to match the edge of the wafer. The wafer can include a semiconductor wafer such as a photovoltaic cell, and the gas can include air, nitrogen, or an inert gas.

Abstract: An extendable auto printing and drying machine is constructed to include two end tables, and adjustable number of rectangular machine tables alternatively reversely arranged between the end tables, each rectangular machine table having a printer and dryer unit formed of a printing module and a drying module at two sides, a transmission chain loop provided in the rectangular machine tables and the end tables rotatable by an external motor drive, and a plurality of carriages respectively installed in transmission chain loop, the carriage each having a workpiece carrier adapted to carry a respective workpiece for printing and drying by the printing modules and drying modules of the printer and dryer units of the rectangular machine tables when the transmission chain loop rotated.

Abstract: A workpiece carrier positioning structure used in an auto printing and drying machine for controlling positioning of a workpiece carrier fixedly carried on a carriage sliding in a track, for enabling the workpiece carrier to be positively maintained in a printing/drying position, in which the workpiece carrier is transversely slidably mounted on transverse axles at the carriage and supported between compression springs on the transverse axles, and a longitudinal slide is controlled by an air cylinder to move a notched stop block into engagement with a roller at the bottom side of the workpiece carrier to hold the workpiece carrier in the printing/drying position when the carriage approached.

Abstract: The present invention is directed to a carrier for use with a printer that can support irregularly shaped substrates having a top surface. The carrier includes first and second planar members. The first planar member has top and bottom surfaces, a thickness, and an inner edge that conforms to an irregularly shaped outer edge of a substrate. The second planar member has a top surface that is coupled to the bottom surface of the first planar member. A recess, defined by the inner edge of the first planar member and the top surface of the second planar member, is adapted to receive the substrate such that top surfaces of the substrate and the first planar member are coplanar.

Abstract: A device for printing printed sheets (1) according to the screen printing method has a printing table (10) and a screen mechanism (9) arranged above it, with a screen frame (8) and a conveying device (7) for moving the printed sheets (1) before, during and after the printing. The conveying device has, when viewed in the conveying direction, at least one clamping device (7) for clamping the lateral edge area of the printed sheets (7). The clamping device is arranged on the side of the printed sheets (1) and is displaceable in the conveying direction.

Abstract: A silk-screen printing machine in simplified register comprising a bearer structure (12) on which a silk-screen printing frame is arranged, elements in register (18) of the position of a sheet element to be printed (15) in a supply plane (14), means (34) for detecting the position of the sheet in register (15) and at least one pincer-carrying rod (16) suitable for pulling the sheet (15) on a printing plane (13), is equipped with a group for registering the sheet (15), which is arranged upstream of the pincer-carrying rod (16) and comprises a transversal plate (17) for supporting the sheet and able to translate towards the pincer-carrying rod (16), a plurality of the mobile elements in register (18) suitable for interacting downstream of the plate (17) with the supply plane (14) of the sheet and a plurality of presser elements (19) arranged in a position above the support plate (17) and mobile towards it to engage the sheet (15).

Abstract: A solder paste stenciling apparatus for minimizing residue of solder paste includes a stencil having multiple stencil openings defined therein, a supporting member retaining the stencil, and a vibrator for vibrating the stencil. In operation, a substrate is engaged to a bottom surface of the stencil, and solder paste is applied onto a top surface of the stencil so that the stencil openings are filled with the solder paste. The substrate is then slowly separated from the stencil while the vibrator vibrates the stencil to evacuate the solder paste out of the stencil openings and to further deposit on the substrate. Hence, the amount of residual solder paste adhered to inner surfaces defining the stencil openings is minimized.

Abstract: A pallet (10) for use with a screen printing apparatus having arms (12) extending outwardly from the printing machine supports an article against a printing force supplied by the screen printing machine. A base portion (14) of the pallet (10) is attachable to the arm (12) of the printing machine and includes a support structure extending therefrom to stabilize and reduce deflection against the printing force.

Abstract: A device for dosing and distribution of hotmelt on a substrate is provided. The device includes substrate throughput, hotmelt supply, at least one hotmelt application position with a stencil, hotmelt distribution and a squeegee device. The hotmelt distribution includes a hotmelt dispensing nozzle. A dosing unit and drive for moving the dosing unit to and fro along said squeegee device are also provided. The hotmelt dispensing nozzle is fitted on the movable dosing unit.

Abstract: A sealable vacuum chamber has an outlet. A template within the chamber includes flow guides for guiding colorant under vacuum across and into porous material when in contact therewith toward the outlet to create a pattern in the porous material. The flow guides allow for at least slight variation in the pattern without being altered.

Abstract: A device for adjusting a frame of a printing press carrying a conveyor belt relevant to printing modules in the three-dimensional axial directions. At least a First guide is provided on the frame for guiding a plate arranged on the frame in a horizontal direction x lengthwise to the frame by a first guiding component for adjusting the frame in the appropriate direction. Second guides are provided in a vertical direction y to the frame, on which two movable guiding components are positioned, and between the two guiding components, a third guiding component is arranged, which can be moved to the third guides on the second guiding components in the direction z transverse to a substantially horizontal plane of the frame.

Abstract: A bifurcated platen assembly is used to improve screen printing operations by providing parallel spaced apart platens instead of a single platen. The platens occupy the same space as a conventional platen but allows the simultaneous printing on two garment portions or two garments such that alignment problems are eliminated and the operator is able to increase through put production. The platen assembly is movable through a ninety degree arc to facilitate printing on different garments with appropriate screens.

Abstract: A base or pallet that is variably adjustable along its width to specifically accommodate a wide range of differently sized pieces of clothing is provided. A main pallet base is flanked by a pair of extendable and retractable (movable) wings, along the underside thereof, that are constructed from a durable material and that extend simultaneously in opposing directions. In an illustrative embodiment, a movement-balancing mechanism, such as a rack-and-pinion assembly or pantograph, is used to extend and retract the wings at a similar rate. In this manner, pulling or pushing on one wing causes the other to move simultaneously. The wings are locked in place using a locking mechanism beneath the outer-facing side of the main base. The locking mechanism can be a block that applies friction to one of the rack sets of the rack-and-pinion assembly or other movement-balancing mechanism.

Abstract: A method of printing a printing material on an object, including the steps of printing the printing material on the object through a mask having at least one through-hole formed through a thickness thereof, inspecting the printing material printed on at least one portion of the object through the at least one through-hole of the mask, and re-printing, when the inspection shows that an amount of the printing material printed on the at least one portion of the object is short, the printing material on the at least one portion of the object through the at least one through-hole of the mask to compensate for the short amount of the printing material.

Abstract: A screen printing apparatus prints cream solder through a pattern hole of a mask plate, to which a substrate is brought into contact, by sliding a squeegee head. The mask plate, to which the substrate is positioned, is three-dimensionally measured from its above, thereby detecting a positioned status. Based on the detection result, the positioned status is corrected by driving a substrate-positioning-section. As a result, the substrate is always exactly positioned to the mask plate, and quality print is thus maintainable.

Abstract: A manufacturing method of a circuit board comprises the steps of: (a) feeding a printing stage having a porous member comprising a porous plate and a porous sheet, the porous sheet is composed of 90 wt % to 98 wt % of cellulose; (b) placing a plate for the circuit board having a pierced hole above the porous member; and (c) filling a conductive material in the pierced hole from an upper side of the plate for circuit board by sucking the porous member at a prescribed vacuum pressure from a back of the porous member.

Abstract: A method for displacing an article using first and second pallets for holding and transporting an article between two process stations and an H-bar assembly for receiving the first and second pallets, the method including the steps of: receiving the first and second pallets and articles thereon by the H-bar assembly at one of the two process stations; performing a first process on the articles while received by the H-bar assembly; moving the first and second pallets and articles thereon to a second process station; and performing a second process on the articles while at the second process station.

Abstract: The present invention aims to improve the printing accuracy. Further, the invention aims to reduce the size of the screen compared with the conventional processing pattern, and to reduce the cost of the screen. Further, it is also an object of the invention to lengthen the life of the screen. According to the invention, the screen printer for performing the screen printing using the screen plate includes: the table placed facing the screen plate; and the screen sealing unit which nearly seals the space between the screen plate and the table.

Abstract: A quick release pallet for a screen printing machine in which the pallet has locating recesses at either ends which locate the pallet on the pallet arm of the screen printing machine by engaging locating lugs on the pallet arm. A toggle clip secures the pallet in position. The advantages are that the pallet has no attachments and can be very quickly positioned and released. Because there are no screw holes in the top surface of the pallet it has a larger print area. The pallet can be modified to a vacuum pallet with a perforated or porous top plate and a vacuum manifold connected to the base plate and air spaces being provided by machined channels in the base plate or a mesh interposed between the base plate and the top plate.

Abstract: A quick release pallet for a screen printing machine in which the pallet has locating recesses at either ends which locate the pallet on the pallet arm of the screen printing machine by engaging locating lugs on the pallet arm. A toggle clip secures the pallet in position. The advantages are that the pallet has no attachments and can be very quickly positioned and released. Because there are no screw holes in the top surface of the pallet it has a larger print area. The pallet can also be modified to a vacuum pallet with a perforated top plate and a vacuum manifold below.

Abstract: A garment loader for a screen printing machine includes a carriage 37 which reciprocates between an extended position where a garment is fed into the jaws of grippers 42 attached to the carriage 37. The grippers are raised above the pallet 22 and the carriage retracts to the other end of the pallet 22 where the grippers 42 are lowered and release the garment which is now fitted on the pallet. While the pallet is rotated to the first print station the carriage is extended and the grippers lowered to be ready for loading the next garment.

Abstract: Laser beams 94 and 95 of laser emitters 74 and 75 are applied to work positioning marks 54 and 55 vertically before attaching a screen plate 60. Then, for attaching the screen plate 60 to frame fixing units 66 and 67, the screen plate 60 is fixed to the frame fixing units 66 and 67 so that the laser beams 94 and 95 are applied to plate positioning marks 64 and 65.

Abstract: A machine for screen-printing on a flat sheet comprises at least one first mobile frame connected to a support plane for the sheet to be printed and at least one second mobile frame that supports a screen for printing, a doctor, and the members to guide and move the doctor. Pairs of eccentric wheels are provided so as to cyclically move the first and second frames in a direction perpendicular to the support plane between an open position, corresponding to which an already printed sheet is removable and a sheet to be printed is introducible, and a closed position in which the sheet to be printed may be retained on the support plane during the printing phase.

Abstract: A printing machine including a plate adapted to rotate about its axis and carrying at its periphery a plurality of object supports having a top face which receives an object to be printed and workstations distributed circumferentially around the plate in line with the trajectory of the object supports, some of which are printing stations and others of which are treatment stations. At least one of the object supports includes a lifting system which raises the object relative to the top face of the object support. The lifting system is connected to a suction head which preserves the projecting position of the object corresponding to that it initially occupied on the object support. The lifting system preferably includes at least two tubes which slide through holes through the object support and the plate.

Abstract: A machine for processing hollow glass objects (8) is described. The machine includes a sequence of like processing units (1) to (15) and (A, B) on which a small number of processing steps can be carried out on the workpiece (8). The workpieces (8) are brought to the processing unit on a clock-driven loading belt (4) and taken therefrom. A workpiece, which is being processed in a unit, is held during the entire sequence by one and the same workpiece holder. Each processing unit includes two separate handling units with which two workpieces run through the workstations time displaced. The machine arrangement permits processing units to be taken out or switched into the line without a production standstill.

Abstract: An apparatus for displacing an article including first and second pallets for holding and transporting an article between two process stations; an H-bar assembly for receiving the first and second pallets at one of the two process stations; wherein, in operation, a process is performed on the articles while the first and second pallets are received by the H-bar assembly, the pallets then being transported to the second process station where a second process is performed on the articles.

Abstract: A printing machine includes a circular contour printing table which has a plurality of object-stations regularly distributed around its periphery each adapted to receive an object to be printed and which, rotatable stepwise about an axis, moves the object-stations successively to a loading station, to a plurality of workstations each including a printing system, and to an offloading station. A system for turning over the objects includes a first transfer arm which picks up an object on the printing table and puts it down on an overturning shovel, turns it over and puts it down at a receiving station. A second transfer arm picks up the turned-over object at the receiving station and puts it back down on the printing table.

Abstract: A screen-printing method, including the steps of filling, in a state in which a screen having through-holes is contacted with a print surface of a substrate, the through-holes with a print material, and thereby applying the print material to the print surface of the substrate, moving, after the filling step, one of the screen and the substrate relative to the other of the screen and the substrate, in one or more cycles, on a plane parallel to the print surface of the substrate, in one or more directions parallel to one or more straight lines, and separating, after the moving step, the screen and the substrate from each other.

Abstract: A screen-printing apparatus with enhanced accuracy of positioning a mask to a material to be printed, in which a printing table is fixed, the mask is displaced in a right-left direction and a front-rear direction, and rotated in a horizontal plane in accordance with a position confirmation signal from a camera device and the mask, a mask support frame, a squeegee device are moved up and down together at a predetermined timing at every printing step.

Abstract: A stencil printing machine 1 is provided with a stencil drum 16 and a opposite 17 which are a pair of cylindrical parts located with their external peripheral surfaces being close to each other, a stencil sheet 15 being detachably wound on the external peripheral surface of the stencil drum 16, and serves to perform stencil printing process by rotating the stencil drum 16 and the opposite 17 in order that the external peripheral surfaces thereof are located close to each other and moved in the same direction while the stencil sheet 15 is pressed against the opposite 17, and by making the stencil sheet 15 in contact under pressure with a sheet of paper 22 passing between the stencil drum 16 and the opposite 17 by the pressing force of the stencil drum 16. The stencil drum 16 is detachably mounted on the stencil printing machine and provided with storage units 201 to 203 for storing information about the pressing force of the stencil drum 16 against the opposite 17.

Abstract: Squeegee device for applying printing medium to a substrate, interacting with a squeegee element which is made at least partially from a magnetizable material and can be moved between an operating position and an at-rest position, which squeegee device comprises a support frame for delimiting an operating space, inside which the operating position of the squeegee element is located, and magnetic means which are provided on the support frame for generating a magnetic field at the location of a designated bearing-wall part of the support frame in order to pull the squeegee element onto the bearing-wall part in the at-rest position, in which device switching means are provided, which interact with the magnetic means in order to apply the magnetic field at the location of the bearing-wall part in a switched-on position and to substantially eliminate the magnetic field at the location of the bearing-wall part in a switched-off position.

Abstract: Laser beams 94 and 95 of laser emitters 74 and 75 are applied to work positioning marks 54 and 55 vertically before attaching a screen plate 60. Then, for attaching the screen plate 60 to frame fixing units 66 and 67, the screen plate 60 is fixed to the frame fixing units 66 and 67 so that the laser beams 94 and 95 are applied to plate positioning marks 64 and 65.

Abstract: A solder screen printing process comprises: providing a wafer having a plurality of chips thereon, and a passivation layer covering the chips while exposing a plurality of bonding pads of the chips, wherein the bonding pads have a plurality of under bump metal (UBM) structures formed thereon; forming a pattern layer on the wafer, wherein the pattern layer has a plurality of first openings that defines the locations on the chips where bumps are to be subsequently formed; providing a carrier that has a wafer mounting location, providing a mounting support means that is mounted on the carrier, wherein the mounting support means has a second opening of the wafer size, such that the wafer mounting location of the carrier is exposed through the second opening; mounting the wafer on the carrier through the second opening of the mounting support means; and filling the first openings with a solder paste.

Abstract: An apparatus and method for framing a printing screen comprising a clamping element having a shape to conform to the mug frame with four threaded posts for attaching to a steel baseplate by fasteners. The screen is attached to the mug frame by adhesive and trimmed for screen printing.

Abstract: Screen-printing device for printing a substrate (6), comprising at least one printing station (2) for a removable screen (10) and a printing-medium feed; and substrate-conveying means (4, 5) for guiding a substrate (6) past the printing station (2) in which device the following are also provided: a movement mechanism for moving the screen (10) and the substrate-conveying means (4, 5) with respect to one another between a printing position and a free position, a shield (15) which can move between an at-rest position and a shielding position, in which shielding position the shield (15) forms a barrier between the screen (10) and the substrate-conveying means (4, 5) or a substrate (6) which is being guided over these means, and liquid-discharge means (20) for discharging liquids which are deposited on a shield (15) which is located in the shielding position.

Abstract: A screen printing system has multiple screen cassettes stored in a magazine and a first screen cassette is transferred from the magazine into a printing station. The preferred cassette have an inner and outer frame with the inner frame carrying a printing screen and have off-contact and traversing members for positioning the screen at a correct off-contact distance and for engagement with a track. The preferred off-contact and traversing members comprise four wheels for rolling along the track to and from a magazine. The wheels are movable relative to the frames by an adjusting shaft and nut to change the off-contact distance. A motorized pallet conveyor conveys a plurality of substrates, each of which is loaded one of a series of pallets of the conveyor, into and from the printing station and about an endless path.

Abstract: An apparatus for displacing an article including first and second pallets for holding and transporting an article between two process stations; an H-bar assembly for receiving the first and second pallets at one of the two process stations; wherein, in operation, a process is performed on the articles while the first and second pallets are received by the H-bar assembly, the pallets then being transported to the second process station where a second process is performed on the articles.

Abstract: A simplified screen printing machine includes a base member having a print base with an elastic member for mounting an object to be pressed; a framed stencil sheet assembly including a stencil sheet formed of a porous support and a resin film laminated to the support and a frame member laminated with the stencil sheet; and a pressing device attachably and detachably assembled with the framed stencil sheet assembly for pressing the framed stencil sheet assembly to the base member. The pressing device has an opening for receiving at least a part of the print base therein. When the pressing device with the stencil sheet assembly is disposed on the print base with the object, the print base is at least partly located in the opening to thereby stretch the framed stencil sheet assembly with tension.

Abstract: A variable height print table arrangement for a screen printing apparatus which includes a plurality of rotatable lower level outwardly extending spider arms which support corresponding support pallets or tables on which apparel or other textile substrates to be screen printed are placed. The rotatable lower level outwardly extending spider arms are lowered and raised using a mechanical drive, such as an electrical servomotor or an electrical stepper motor, which is capable of lowering and raising the rotatable lower outwardly extending level spider arms a predetermined variable distance. The variable height print table arrangement for a screen printing apparatus also includes a counterbalance arrangement, preferably using a compression spring, which reduces the effective weight of the rotatable lower level outwardly extending spider arms and allows a smaller mechanical drive to be used.

Abstract: In the marking apparatus in which the marking tool is vibrated by piezoelectric body vibrator and characters are engraved onto the objective material, the detection means detects the amplitude of piezoelectric body vibrator as the DC signal, and the drive control means adjusts the frequency of the drive signal so that the level of the DC signal detected by detection means is within a predetermined range, and drives piezoelectric body vibrator, and by appropriately adjusting the frequency to drive piezoelectric body vibrator, drives piezoelectric body vibrator with a predetermined amplitude. Accordingly, because the amplitude of piezoelectric body vibrator can be kept within a constant range, the stable resonance can be conducted. Further, the resonance can be conducted without being influenced by the resonance frequency of the tool.

Abstract: A screen printing apparatus prints cream solder through a pattern hole of a mask plate, to which a substrate is brought into contact, by sliding a squeegee head. The mask plate, to which the substrate is positioned, is three-dimensionally measured from its above, thereby detecting a positioned status. Based on the detection result, the positioned status is corrected by driving a substrate-positioning-section. As a result, the substrate is always exactly positioned to the mask plate, and quality print is thus maintainable.

Abstract: A stencil printer of the present invention includes a porous hollow cylindrical print drum rotatable with a perforated master having a porous resin film as a base wrapped therearound. A pressing member is selectively movable into or out of contact with the print drum for pressing a paper or similar recording medium fed from a paper feeding device against the print drum. As a result, ink is transferred from the inside of the print drum to the paper via perforations formed in the master. The pressing member is implemented as a roller having a plurality of layers including an inner layer having a hardness of 8° to 14° (JIS (Japanese Industrial Standards)-A) and an outer layer having a hardness of 30° to 40° (JIS-A). With this configuration, the entire roller has surface hardness of 18° (JIS-A) and prevents the resin film of the stencil from partly coming off due to stress ascribable to the edges of relatively thick papers.

Abstract: This invention relates to a real feed screen printing method and printing machine for performing screen printing while feeding a roll film by a specific stroke, in which the drying oven side of the film is slackened at the time of printing.