Stencil And Work Support Patents (Class 101/126)
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Patent number: 5970874Abstract: A process and system for applying or treating a graphic image on a substrate by using heat and pressure. The system is comprised of a frame having a plurality of supporting members and a reciprocally mounted heated platen extending from a first member, and a reciprocally mounted support having a pair of raised bars thereon reciprocally mounted on a second member. The heated platen and the raised bars of the support are first sequentially moved, and then simultaneously brought into contact with a supporting pallet and substrate, so as to condition, emboss, fix, form, or shape a surface of the substrate, or an image on the substrate, to thereby improve the quality thereof, or of further graphic images applied thereto.Type: GrantFiled: June 26, 1998Date of Patent: October 26, 1999Inventor: Ralph J. Bill
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Patent number: 5957047Abstract: A simplified printer comprises: a base plate having a pedestal on which an object to be printed is placed; and a pressure plate, one end of which is pivotably connected with one end portion of the base plate; and adhesive members respectively arranged on the pedestal and a portion of the pressure plate opposed to the pedestal.Type: GrantFiled: March 30, 1998Date of Patent: September 28, 1999Assignee: Riso Kagaku CorporationInventors: Kengo Kodama, Hiroshi Nagano
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Patent number: 5953987Abstract: An exposure frame (30) and a registration printing pallet (130) are disclosed for registering a printing screen frame (10) holding a screen (12) first to the artwork (4) and next to the pallet (19) supporting the product (T) to be screened.Type: GrantFiled: October 15, 1996Date of Patent: September 21, 1999Assignee: M&R Printing Equipment, Inc.Inventor: Andrew L. Oleson
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Patent number: 5937752Abstract: The disclosed stencil printing apparatus includes, a pressure chamber comprising a first place member on which a sheet to be printed is placed, an airtight elastic frame which is placed on the first plate to surround the sheet, and a second plate member which is placed on the elastic frame and supports a stencil opposite to the sheet; a resilient air chamber which is layered below the first plate member of the pressure chamber and communicates with the pressure chamber; and a check valve which allows air to be exhausted from the air chamber but inhibits the air chamber from sucking air from the apparatus outside.Type: GrantFiled: October 30, 1997Date of Patent: August 17, 1999Assignee: Riso Kagaku CorporationInventor: Kouichi Uchiyama
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Patent number: 5937749Abstract: A silk screen printing apparatus of modular design which can be easily assembled and disassembled and easily transported on an ordinary hand truck in which there can be repetitive multi-color patterns printed on a plurality of like articles with precise registration of the silk screens and in which there can be an additional heating and drying mechanism as a separate, compatible, modular unit such as to permit in-line printing of fabric such as T-shirts and the drying of the printed T-shirts.Type: GrantFiled: November 15, 1997Date of Patent: August 17, 1999Inventor: Garey W. Ford
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Patent number: 5934191Abstract: An electronic apparatus has a body formed with a pocket for mounting a plurality of types of access objects each having an end surface for being accessed, therein from above. The body has an access block arranged therein for accessing the end surface of each of the plurality of types of access objects. Main support bosses are provided in the pocket in a manner extending upward for having each of the access objects being fitted thereon. The access object is comprised of a receiving member having an access surface (the end surface) for being accessed by the access block, a receiving member-attaching portion to which the receiving member is attached, and a receiving member-holding part for holding the receiving member-attaching portion. A cap is removably fitted on the access object in a manner such that the receiving member thereof is covered by the cap.Type: GrantFiled: December 18, 1996Date of Patent: August 10, 1999Assignees: Seiko Epson Corporation, King Jim Co., Ltd.Inventors: Eiji Tukahara, Hiroshi Kuriyama, Kenichi Nakajima, Hideki Oikawa, Kenji Watanabe, Takanobu Kameda, Tomoyuki Shimmura
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Patent number: 5927193Abstract: An apparatus and method is provided for vacuum screen printing a greensheet having vias and both vias and open areas whereby vacuum leakage in the apparatus is minimized and avoids bowing of the screen over the open area of the greensheet. An interposer apparatus is provided comprising at least two layers having vertical through openings in registration with the via openings of the greensheet and screen. The interposer also comprises vertical through openings communicating with the open area of the greensheet and with vent channels of the interposer. A porous membrane is also used either alone or in conjunction with the interposer to provide enhanced screening results.Type: GrantFiled: October 16, 1997Date of Patent: July 27, 1999Assignee: International Business Machines CorporationInventors: James G. Balz, Cynthia J. Calli, Jon A. Casey, David C. Long, Daniel S. Mackin, Keith C. O'Neil, Brenda L. Peterson, Glenn A. Pomerantz
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Patent number: 5913264Abstract: A screen printing machine having a rotor, a stator, a device for moving the rotor and stator into juxtaposition, and an annular track and track followers for guiding the rotor in vertical and radial directions.Type: GrantFiled: January 5, 1996Date of Patent: June 22, 1999Inventor: Otto Richard Eppinger
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Patent number: 5909706Abstract: A support table supports a module board during a screen printing thereof. The support table has a body in which rectangular grooves are formed in both upper and lower surfaces thereof, a plurality of slots formed in a middle portion thereof and open to the grooves, and a plurality of jigs which are inserted into the slots and fixed relative to the body. The jigs can compensate for any difference between the heights of semiconductor devices which are mounted on the board, and support the board, with the board or the semiconductor devices resting directly on the jigs as the manufacture process at that time requires.Type: GrantFiled: February 5, 1998Date of Patent: June 8, 1999Assignee: Samsung Electronics Co., Ltd.Inventors: Jong Man Jin, Sung Ho Moon, Jong Jin Park
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Patent number: 5906158Abstract: A screen printing apparatus in which alignment marks are provided on the screen and the printing material. The marks are detected accurately and clearly by an alignment mark detector located between the printing material and the screen.Type: GrantFiled: October 2, 1997Date of Patent: May 25, 1999Assignee: Sakurai Graphic Systems CorporationInventor: Mitsuji Takai
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Patent number: 5901646Abstract: A high speed screen printing machine (20) is provided for accurately imprinting images on segments (205) bearing indicia (206) of a transparent web (34, 36). The machine (20) includes a vacuum platen (24) which is transversely adjustable to accommodate webs of differing widths, a camera assembly (28) beneath the platen (24) and indicia (206), and an X, Y, .theta. adjustable frame (30) supporting an upper screen frame support assembly (32) adapted to hold a printing screen (208) provided with reference indicia (212). When a segment (205) is initially positioned and held by platen (24), the camera assembly (28) is used to generate a combined image of the indicia (206) through the segment (205) and the screen reference indicia (212); a microprocessor controller uses this data, together with positional information establishing the location of the screen frame support assembly (32), and activates the three-motor adjustment frame (30) for simultaneous X, Y and .theta.Type: GrantFiled: October 21, 1997Date of Patent: May 11, 1999Assignee: Preco Industries, Inc.Inventors: Christopher S. Walker, Ivan B. Helmrich
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Patent number: 5887519Abstract: A screen printing machine has a drive mechanism for moving printing platens along an endless horizontal path through successive printing stations and a printing screen carried by a printing head above the endless path at each printing station. A platen alignment mechanism at each printing station has locating members movable vertically into and out of engagement with freely rotatable rollers on the platen supports. A screen positioning mechanism at each printing station has screen holders engageable with opposite sides of screens, and the screen holders each comprise a screen support mounted for pivotation to and fro between a position beneath one of the screens. A lifting system at each printing station has supports positioned to support opposite ends of one of the printing heads and a support drive mechanism operable to simultaneously raise the supports.Type: GrantFiled: September 29, 1997Date of Patent: March 30, 1999Inventor: Steve Zelko
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Patent number: 5881641Abstract: A turret style printing machine (10) having a plurality of radial arms (30,70,170) incorporates a plurality of hinge assemblies (35,75,175) for permitting the arms to be moved between a first, extended position for operation of the machine and a second, folded position for storing or transporting the machine (10).Type: GrantFiled: July 10, 1997Date of Patent: March 16, 1999Assignee: M&R Printing Equipment Inc.Inventor: Dariusz Tkacz
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Patent number: 5845569Abstract: A turret style printing machine (10) includes a first tier (16) of pallet supporting members (14), a second tier (20) of printing head supporting members (18) and a third tier (24) of printing head supporting members (22). One can thus selectively move either a second tier member (18) or a third tier member (22) into alignment and registration with a first tier member (14). A uniform registration is further provided ensuring the second third tier supporting members consistently align with the first tier supporting members (14). This expansion increasing the number of stations is accomplished without necessarily increasing the required floor space or system diameter.Type: GrantFiled: October 21, 1997Date of Patent: December 8, 1998Assignee: M&R Printing EquipmentInventors: Dariusz Tkacz, Alex Iaccino, Allen Mark Repashy
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Patent number: 5836998Abstract: A method and apparatus for allowing a decorative stain to be applied to a predetermined epidermal area of a subject is disclosed. An adhesive stencil having an adhesive layer and a generally non-absorbent layer substantially coextensive therewith about a decorative pattern is temporarily secured to a predetermined epidermal area to allow a decorative stain to be applied thereon by the steps of applying a predetermined amount of a material that is capable of staining the epidermis to said generally non-absorbent layer, allowing said epidermal stain material to dry and removing said stencil and said epidermal stain material from said predetermined epidermal area.Type: GrantFiled: October 8, 1997Date of Patent: November 17, 1998Inventors: Linda Mueller, Beata R. deVirion
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Patent number: 5832822Abstract: A detachably mounted pallet tool is utilized on the arms of a carousel printing machine and work support pallets thereon to provide a more efficient and rapid registration with stationary screen frames associated with the machine, without removal of work support pallets from the arms. A bracket on an arm and cooperating fitting on the pallet tool provide for quick, detachable mounting and removal of the pallet tool.Type: GrantFiled: October 21, 1997Date of Patent: November 10, 1998Inventor: Kaino J. Hamu
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Patent number: 5819651Abstract: The invention relates to a clamping-stretching system for stencils for screen printers, with a printing table for PC boards designed for applying colors, pastes, adhesives, etc., onto even surfaces of a print, preferably onto electronic PC boards with a stencil, which also allows through plating of holes of electronic PC boards. The clamping-stretching system of the stencil may be an element of a machine, or it may be fixed via a frame (4) to all types of printers. Stencils are clamped into it in an exchangable manner. A front crossbar (9) and a back crossbar (10) are guided in the side profiles of the frame which have a pressure bar at their lower part. The front crossbar (9) rests against the front wall (7) or aganist the front profile of the frame via at least one adjustment screw (5) and a cascade of disk springs (13).Type: GrantFiled: August 20, 1997Date of Patent: October 13, 1998Assignee: Zeltra, Podjetje Za Projektiranje, Proizvodnjo in Trgovino Elektrotehnike,Naklo,D.O.O.Inventors: Janez Zepic, Joze Stupar, Kilijan Vizjak
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Patent number: 5806422Abstract: The several screen frames of a multistation screen printing machine, such as a carousel screen printer, having multiple work supports movable to the printer stations in succession to effect successive printing of screen images on work pieces fixed to the supports are precisely registered with the work supports by providing each frame with two and preferably three registration points precisely located relative to the screen image on the frame, providing a selected work support with the same number of registration points precisely located relative to the position of a work piece on the selected support, effecting movement of the selected work support to the print stations in succession, adjusting the corresponding screen frame to directly align its registration points with the registration points on the selected work support, and securing the frame in fixed position relative to its respective print station while the frame and work support are firmly held in fixed position by registration pins extending betweenType: GrantFiled: October 4, 1995Date of Patent: September 15, 1998Assignee: Kaino J. HamuInventor: Alan J. Hamu
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Patent number: 5806424Abstract: Printing screens are registered using a photosensitive position locating sensor which is affixed to a pallet and aligned with the image of a register mark on the first of a series of printing screens. The location of the image is stored and signalled in a display device. The pallet is then roughly aligned with a second and subsequent screens of the series. The subsequent screens are each moved until the display image of its register mark is superimposed upon the stored image. The signal output from the sensor is applied to a microprocessor which controls the display device.Type: GrantFiled: October 24, 1995Date of Patent: September 15, 1998Inventor: Daniel J. Elliot
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Patent number: 5800614Abstract: A device is disclosed for applying adhesive to platens of a textile screen printing machine as the platens move from the unload stage to the load stage. The device comprises a frame mountable to the screen printing machine so that it extends over the moving platens, at least one interconnectable housing carried by the frame. Each housing has an array of adhesive-depositing nozzles and adhesive-spreading air nozzles plus a drying nozzle. As a platen passes under the housings, a sensor initiates the array of adhesive nozzles to deposit columns of adhesive onto the platens. Then the air nozzles spread the columns of adhesive by blowing air onto the columns. Finally, the spread adhesive is dried by gas from the drying nozzle, preferably directing a single curtain of air under pressure onto the adhesive. The housings are modular so that the device can be used with larger platens by simply adding one or more housings.Type: GrantFiled: September 24, 1996Date of Patent: September 1, 1998Inventor: Paul William Foust
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Patent number: 5797688Abstract: Apparatus for printing labels onto circular discs of predetermined diameter includes a linear printhead having a length equal to at least the diameter of the discs to be printed. A carrier has a planar surface with a circular recess into which a compact disc can be tightly inserted. The recess is of a depth substantially equal to the thickness of the disc to be printed, whereby the planar surface and a surface of an inserted disc form a substantially flat surface. The carrier is formed of a substrate and a member which defines the outer boundary of the recess. The substrate is at least partially formed of an elastic material having a compliance selected so as to provide a pressure on the printhead optimal for dye transfer. A second rigid member fits into a center hole in the inserted compact disc.Type: GrantFiled: January 7, 1997Date of Patent: August 25, 1998Assignee: Eastman Kodak CompanyInventor: Xin Wen
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Patent number: 5787805Abstract: A screen printer prints ink on a plurality of substrates being carried by traveling pallets passing successively through printing stations. A manually operable controller is located at each printing head to operate position-controllable motors, such as stepping motors, to raise or lower a screen printing frame assembly to change an off-contact distance between it and an underlying substrate. A display at each printing head shows the relative distance being raised or lowered with operation of the manually-operable controller. Preferably, the stepper motors are positioned at the four corners of the screen printing frame. A common controller has a display for showing an operative or inoperative status of a screen printing head at each station and circuits to render the printing heads operative or inoperative. The controllers preferably are operably by a touch pad.Type: GrantFiled: October 25, 1995Date of Patent: August 4, 1998Assignee: Elexon Ltc.Inventors: Alexander Szyszko, Rick Lee Fuoua, Thomas Burke Lyden, Mariusz Smialek, Marek Dudek
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Patent number: 5784956Abstract: An apparatus for printing materials, particularly textile materials, ceramics, paper or the like, has a housing and a drive apparatus, with several printing units, which are respectively associated with a pallet arranged on a pallet carrier and with a rotary drive which receives the pallets and which transfers the pallets into a succeeding processing station, and with a plate which carries the printing units and which can be moved up and down with a lifting apparatus, wherein the rotary drive is constructed as an indexing table with a rotary plate and can be indexed electromechanically.Type: GrantFiled: August 7, 1997Date of Patent: July 28, 1998Inventor: Heinz Walz
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Patent number: 5779794Abstract: A universal fixture for holding printed circuit boards during stencil printing and other manufacturing processes related to printed circuit boards. In one embodiment, a universal fixture for holding a printed circuit board has a platform with a work surface, a first support member attached to the platform to hold a portion of a printed circuit board, and a second moveable support member attached to the first support member to support another portion of the printed circuit board. The platform is preferably adapted to be attached to a workstation of a processing machine, such as a stenciling machine for printing solder or adhesive onto the printed circuit board. The first support member preferably has an elongated sidewall, a first endwall extending transversely from the sidewall, and a second endwall spaced apart from the first endwall along the sidewall and extending transversely from the sidewall.Type: GrantFiled: December 6, 1996Date of Patent: July 14, 1998Assignee: Micron Technology, Inc.Inventor: Curtis C. Thompson
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Patent number: 5766361Abstract: A process is provided for forming a conductive line between a conductor and a spacer formed on a substrate of a field emission display. In one embodiment, the process performs the steps of disposing a screen between the substrate and a distributing member, the screen having an opening which permits the extrusion a conductive material, and moving the distributing member relative to the screen to extrude the conductive material through the opening and form a conductive line connecting the conductor and the spacer, wherein the snap off distance is varied according as the distributing member moves along the substrate.Type: GrantFiled: January 7, 1997Date of Patent: June 16, 1998Assignee: Micron Display Technology, Inc.Inventor: Darryl Stansbury
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Patent number: 5765476Abstract: An off-contact setup device is provided for a screen printing type machine. The setup device includes a frame that releasably clamps onto a levelled image pallet of the screen printing machine. The height of the setup frame relative to the pallet surface is adjusted. This height is calibrated to a desired off-contact distance between a printing screen and the substrate to be printed (which is positioned on the pallet during printing). The frame holding arm of the printing machine, which is used to support the screen printing frame, is brought into position and secured to the setup frame. The height and level adjustments for the screen frame holding assembly are then fixed so as to conform to the position of the setup frame on the pallet. This process is repeated for all stations on the printing machine. Thus, the relative distance between all pallets and the screen printing frames attached to the holding assemblies are set to be the same, providing a consistent printing operation.Type: GrantFiled: October 15, 1996Date of Patent: June 16, 1998Assignee: Stretch Devices, Inc.Inventor: Thomas A. McKeever
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Patent number: 5759269Abstract: A screen printing machine comprising a backing plate with holes conforming to components attached to the surface of a flexible circuit board. The machine includes a screen which patterns solder paste on the surface of the circuit board while the circuit board is on the backing plate. Also included is a spring loaded element disposed adjacent to the backing plate which applies a predetermined continuous force to the four corners of the circuit board. This force is applied in a diagonal direction to the corners to stretch the circuit board so that the circuit board is parallel to the backing plate during screening.Type: GrantFiled: June 6, 1995Date of Patent: June 2, 1998Assignee: International Business Machines CorporationInventors: Lawrence R. Cutting, Michael A. Gaynes, Eric A. Johnson, Cynthia S. Milkovich, Jeffrey S. Perkins, Mark V. Pierson, Steven E. Poetzinger, Jerzy Zalesinski
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Patent number: 5755157Abstract: A solder paste stencil printing apparatus in which a stencil plate having a porous figure printing area may be used for single component solder paste application. The printing operation is performed by alignment of the stencil pattern figure over the appropriate component substrate pads. With the stencil plate being held in place by downward force, solder paste is dispensed over the stencil plate pattern allowing gravity flow of the paste material into the stencil pattern pores. Excess paste material is squeegeed level to the top surface of the stencil plate and the plate lifted from the substrate surface leaving solder paste in the configured pattern. An associated stencil plate holder matched to the printer head shaft allows any number of stencil plate patterns to be made available for solder paste application.Type: GrantFiled: December 27, 1996Date of Patent: May 26, 1998Inventors: Michael K. Omori, Floyd Gary Miller
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Patent number: 5752446Abstract: Apparatus is provided for aligning two objects (1,2), such as a board and screen in a screen printer, each having at least one reference mark (6a,7a) on a surface thereof, whereby alignment of the objects is indicated by alignment of corresponding reference marks on the surfaces of the objects. The apparatus comprises support means for supporting the objects in use with the said surfaces facing one another, and imaging means (20), mounted for movement between the said surfaces in use, for acquiring, on a single imaging surface thereof, simultaneous images of respective areas of the surfaces of the objects, which areas contain corresponding reference marks. The apparatus includes control means (4,8) for determining the locations of the reference marks in the images and determining therefrom the extent of misalignment of the objects, and means (3), responsive to the control means, for adjusting the relative positions of the objects to bring the objects into alignment.Type: GrantFiled: May 16, 1996Date of Patent: May 19, 1998Assignee: DEK Printing Machines LimitedInventor: Frank Norman Squibb
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Patent number: 5743182Abstract: A stencil printing apparatus is provided, which comprises a pressure chamber having a first wall and a second wall both of which face each other and are built up together via a frame-like packing, said first wall comprising a frame member which has flexibility in all directions and on which a diaphragm having flexibility is extended; means for supporting a stencil so as to have the stencil disposed opposite to said diaphragm in the pressure chamber; means for supporting printing paper so as to have the printing paper disposed between the stencil and the second wall in the pressure chamber, and means for reducing pressure in the pressure chamber. The diaphragm may be extended on the frame member by laminating it onto the frame member, and the packing and the means for supporting a stencil may be installed on part of said diaphragm overlapping with the frame member. The means for supporting a stencil may be a pair of fabric fastener, one half of the pair being fixed to the frame member.Type: GrantFiled: May 7, 1996Date of Patent: April 28, 1998Assignee: Riso Kagaku CorporationInventors: Akio Kobayashi, Yoshifumi Noguchi, Masakazu Kawano, Akira Ikezawa
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Patent number: 5740729Abstract: In a printing apparatus and method, printing material is printed on to-be-printed circuit boards in a predetermined pattern and a printing state of the material is inspected. The apparatus includes the following devices. A board supporting device has a rotary body supporting a plurality of board-fixed tables to which the boards are secured, and turns the rotary body together with the board-fixed tables intermittently at predetermined angular intervals so as to stop the board-fixed tables at each of a fixing, recognizing, printing, and inspecting position. A board feed device feeds the boards to the board-fixed tables arranged at the fixing position. A board discharge device discharges the boards from the board-fixed tables arranged at the fixing position. A recognizing device recognizes fixed positions of the boards relative to the board-fixed tables at the recognizing position. A printing device prints the printing material on the boards at the printing position.Type: GrantFiled: September 29, 1995Date of Patent: April 21, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Osamu Hikita, Syoji Sato, Toshinori Mimura, Kazue Okanoue, Youichi Nakamura
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Patent number: 5735203Abstract: An apparatus for printing a solder paste to a printed circuit board with use of a screen mask plate and a squeegee. The apparatus includes a device for moving one of the printed circuit board and the screen mask plate at a first moving speed in a direction to be separated from the other of them after printing of the solder paste and until the moving one of the printed circuit board and the screen mask plate reaches a plate-separation position which is a position immediately before the screen mask plate and the printed circuit board are completely separated from each other, and a controller for changing the first moving speed to a second moving speed higher than the first moving speed when the moving one of the printed circuit board and the screen mask plate reaches the plate-separation position.Type: GrantFiled: December 12, 1996Date of Patent: April 7, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiro Taniguchi, Toshinori Mimura, Kazue Okanoue, Hiroaki Onishi, Nobuya Matsumura
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Patent number: 5730051Abstract: A screen printing apparatus includes: a positioning stage for positioning an object and a plate arranged above it; printing squeegees which are moved horizontally on the plate for printing through the plate onto the object; a driver for moving the positioning stage; a horizontal driver for moving the positioning stage in two substantially perpendicular directions; a positioning controller for calculating a central position of a pattern on the plate from a reference position and the size of an outer periphery of the object, moving the positioning stage so that the central position corresponds to a center of the object. A carry-in conveyor is provided for feeding the object onto the positioning stage along a predetermined transferring direction, the conveyor being arranged away from the positioning stage and having a carry-in conveyor surface on which the object is placed before the object is fed onto the positioning stage.Type: GrantFiled: January 26, 1995Date of Patent: March 24, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ken Takahashi, Naoichi Chikahisa, Takao Naito, Tetsuya Tanaka
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Patent number: 5730052Abstract: A method for applying and reproducing an original visual image such as a computer generated image, an oil painting or photograph, onto various surfaces using silk screen ink techniques for a high resolution permanent image transformation, especially useful on objects having a course or toughened surface, such as a football, basketball, or the like, wherein an image is applied to a rough surface by an improved silk screening type method resulting in a high resolution image reproduced on the surface of a non-smooth material, and equally applicable to smooth surfaces such as industrial control panels and the like.Type: GrantFiled: March 11, 1996Date of Patent: March 24, 1998Inventor: Clifford L. Mather
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Patent number: 5694843Abstract: Disclosed is a PC board printing machine with cantilever-supported printing head and stencil holders and bi-directionalty movable printing table, and more particularly to a PC board printing machine which includes a cantilever mechanism, a motor dual-rail transmission mechanism, a exchangeable printing head and stencil cleaning lift-up mechanism, a simple stencil frame holder and dual-oil-cylinder stencil lifting mechanism, and an automatically bi-directionally movable printing table mechanism to produce high printing quality.Type: GrantFiled: June 12, 1996Date of Patent: December 9, 1997Inventor: Tung-Chin Chen
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Patent number: 5694845Abstract: A screen printing apparatus is provided with an improved registration system to ensure that a printing screen frame descends to a specific, predetermined, precise position relative to a screen printing platen each time it is lowered. The screen frame and the platen are provided with pairs of laterally separated registration elements. The platen may be provided with a pair of laterally separated, registration pins that project upwardly to corresponding registration openings defined in an angle bar that is attached to the distal end of the screen printing frame. Each time the screen printing frame is lowered down into a horizontal disposition directly above the platen, the registration pins enter the openings and ensure accurate, precise, consistent registration of the screen relative to the platen. In a multicolor screen printing machine a plurality of screens are carried by mounting arms that are hinged about horizontal axes to a turntable.Type: GrantFiled: October 15, 1996Date of Patent: December 9, 1997Inventor: Garry Newman
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Patent number: 5682817Abstract: A compact disc printing nest for retaining a compact disc along a transportation mechanism which moves the printing nest into a position such that one surface of the compact disc can be screen printed with artwork and/or designs. The compact disc printing nest includes a bottom plate capable of being rigidly secured to the transportation mechanism and a top plate having a receptacle provided in an upper surface thereof for accommodating the compact disc therein and thereby exposing a surface of the compact disc to be screen printed. A magnetic mounting assembly is provided for mounting the top plate with respect to the lower plate to provide for easy removal of the top plate for cleaning and replacement.Type: GrantFiled: July 1, 1996Date of Patent: November 4, 1997Assignees: Sony Corporation, Sony Music Entertainment, Inc.Inventors: Peter Iannuzi, Slobodan Casl
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Patent number: 5673621Abstract: In textile printing apparatus for printing by a silk screen printing process on a fabric of fleece or cotton pile such as the fabric of sweat shirts or T shirts where the shirt is held on a pallet, a special dry holding plate assembly is attached to the pallet on an area thereof that is immediately adjacent the part of shirt that is to be printed on by the silk screen process for holding the shirt during the process, the plate assembly consisting of a thin plate to which is laminated a plastic film that has molded on the surface thereof a multitude of stems each with a hook at the end thereof, so that each hook catches to fibers of shirt fabric until disengaged by forcible removing the shirt, each stem hook being sufficiently flexibility that it can bend to the force of shirt fabric removal and return to its original shape thereafter, the surface having an array of many hundreds of the stem hooks so that the fabric when placed on the surface and pressed lightly onto it, is engaged by the array of stem hooks aType: GrantFiled: March 14, 1996Date of Patent: October 7, 1997Inventor: Larry Vaughan
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Patent number: 5669970Abstract: A stencil for applying solder paste in a desired pattern for mounting electronic components on a surface of a circuit board, said stencil including a sheet having holes therethrough in a pattern corresponding to the desired pattern, a smooth upper surface for receiving the solder paste thereon, and a smooth lower surface for contacting the surface of the circuit board, the upper surface having relieved portions so as to increase the friction between the upper surface and the solder paste being squeegeed thereover.Type: GrantFiled: June 2, 1995Date of Patent: September 23, 1997Assignee: MPM CorporationInventors: Robert J. Balog, David P. Prince
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Patent number: 5664495Abstract: A system for registering printing screens used for printing in series on a substrate which includes a plurality of outwardly projecting electrical switches, with a pair of the switches being positioned to engage a first side of a screen frame and at least one switch being positioned to engage a second side of the screen frame. The first and second sides of the frame are orthogonal relative to each other and, a pair of lights are activated by engagement of the frame with the switches, both of the lights being activated by simultaneous engagement of each of the switches by a screen frame. Similar sets of switches are provided on a table that supports the screens during exposure to an image to be replicated during printing and on a device that temporarily replaces a printing platen for alignment of each screen in a multi screen printing device.Type: GrantFiled: April 11, 1996Date of Patent: September 9, 1997Inventor: Robert B. Winter
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Patent number: 5657690Abstract: An offset printing head includes, mounted to rotate parallel to each other and spaced from each other on a common carriage that is itself mounted to be mobile in translation on a frame, an inking roller and a blanket cylinder. As it moves to and fro, the carriage sweeps across a plate support which receives a plate and an object support which receives an object to be printed. The inking roller and/or the blanket cylinder are each driven by an individual drive system specific to it and independent of the movement of the carriage. Applications include printing machines combining an offset printing head with a silkscreen printing head.Type: GrantFiled: December 29, 1995Date of Patent: August 19, 1997Assignee: Societe d'Exploitation des Machines DubuitInventors: Jean-Pierre Douville, Jean-Louis Dubuit
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Patent number: 5651310Abstract: A device for applying an adhesive coating to an endless belt in a screen printing machine, and having a trough, a pump for filling the trough to a level such that the meniscus of the adhesive contacts the belt, a doctor blade for removing excess adhesive and a pressure bellows for adjusting the pressure at which the doctor blade contacts the belt.Type: GrantFiled: April 3, 1995Date of Patent: July 29, 1997Assignee: Stork Brabant B.V.Inventor: Henricus Gerardus Maria Kempen
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Patent number: 5647274Abstract: A pressure printing apparatus in which a printing sheet is pressed against a stencil sheet, the pressure printing apparatus includes: a printing sheet table having a printing sheet holding surface inclined vertically; a sheet slidable member provided on the printing sheet holding surface of the printing sheet table, for sliding the printing sheet down from the printing sheet table; a gate for selectively holding the printing sheet fed onto the printing sheet holding surface of the printing sheet table on the printing sheet holding surface; a stencil sheet support portion disposed above and in opposition to the printing sheet table, for supporting the stencil sheet; a pressing member for pressing the printing sheet table against the stencil sheet support portion; and a printing sheet release frame provided between the printing sheet held by the printing sheet table and the stencil sheet supported by the stencil sheet support portion, for releasing the printing sheet stuck to the stencil sheet from the stencilType: GrantFiled: February 7, 1996Date of Patent: July 15, 1997Assignee: Riso Kagaku CorporationInventors: Akira Yasuda, Hideaki Takayama, Masaharu Ogata
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Patent number: 5638750Abstract: A printing apparatus is provided, which comprises a platform, pressing member which is pivotably supported on the platform and capable of carrying a stencil on a side facing the platform, and a frame member. The frame member is disposed between the platform and the pressing member and movable together with the pressing member with a predetermined angle relative to the pressing member being kept constant until the frame member contacts a sheet of paper stacked on the platform, and may be given a biased force against movement to the pressing member. On the frame member, is disposed a paper holding means which can be a resilient sheet capable of sticking to and peelably holding a sheet of paper. After printing is over, the pressing member is raised. The frame member holds on the platform the uppermost sheet of paper that has been printed so as to be peeled off from the stencil.Type: GrantFiled: February 22, 1996Date of Patent: June 17, 1997Assignee: Riso Kagaku CorporationInventor: Shiro Sato
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Patent number: 5626074Abstract: A screen printing machine has a bearing supporting a first arm structure for rotation about a vertical axis, the first arm structure comprising first arms equiangularly distributed about the vertical axis and extending radially outwardly of the vertical axis. The first arms each carry, at a free outer end thereof, a printing screen support platen. A second arm structure has second arms equiangularly distributed about the vertical axis and extending radially outwardly of the vertical axis, the second arms each carrying, at a free outer end thereof, a squeegee mechanism and a printing screen support for holding printing screen below the squeegee mechanism.Type: GrantFiled: September 18, 1995Date of Patent: May 6, 1997Inventor: Steve Zelko
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Patent number: 5623872Abstract: A screen printing apparatus and method suitable for applying solder paste on a printed circuit board, wherein a printed circuit board is brought just under a mask plate with patterned holes. The patterned holes are filled with solder paste. The printed circuit board is separated from the mask plate using intermittent movements that lower the adhesivity of the solder paste located nearest to the walls of the patterned holes so that the solder paste is easily separated from the patterned holes and the solder paste, which remains on the printed circuit board, is not deformed.Type: GrantFiled: April 14, 1995Date of Patent: April 29, 1997Assignee: Matsushita Electric Industrial Co. Ltd.Inventor: Michinori Tomomatsu
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Patent number: 5622108Abstract: A screen printing machine for: (i) creating an image bearing screen; (ii) using the image-bearing screen to create designs on a suitable substrate; and (iii) heating the print to cure the print ink. The bottom of a cabinet forms the base of a cavity that houses a series of ultraviolet (UV) lamps used to create an image-bearing screen. The top of the cavity is enclosed by a protective panel when the lamps are not being used. Narrow shelves that extend inwardly from the side walls support a pop-up screen holder that includes a U-shaped frame sized to receive a screen frame. A downwardly extending tube is slidably mounted in a vertical tubular hole. A coil spring creates an upward pressure on the U-shaped frame. The U-shaped frame is held down by a latch mechanism. A screen registration mechanism moves the U-shaped frame into a fixed position. A beveled block forces a print screen into a predetermined position.Type: GrantFiled: January 30, 1996Date of Patent: April 22, 1997Assignee: Universal Screenprinting Systems, Inc.Inventors: John R. Benedetto, William Gillespie, Jr., James W. Pomeroy, Duke Goss, Charles J. Pomeroy
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Patent number: 5613436Abstract: An adjustable pin registration plate assembly for use in a single or multiple station silk screen printing press apparatus which includes an apparel support platen mounted on an elongated support arm and at least one pivoting silk screen frame support assembly movably suporting a silk screen frame above the apparel support platen. The registration plate assembly comprises a flat plate portion having a plurality of pairs of spaced vertical bores therethrough and a pair of pins each extending upwardly from the plate portion through one of the bores and adjustably secured in the bore. The pair of pins fit into correspondingly spaced holes in the rear side of the silk screen frame to provide final alignment of the frame on the apparel support platen as the frame is lowered into position. The pins are adjustable in height above the plate portion to preclude binding during frame placement and removal from the apparel support platen.Type: GrantFiled: July 17, 1995Date of Patent: March 25, 1997Inventor: Richard E. Taylor
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Patent number: 5607243Abstract: A rear section pallet support plate locator and stabilizer is described for use in a screen printing machine. In place of traditional front plate locators or dual front and rear plate locators, a unique two tiered construction of the support plate provides for both front to back and side to side precise positioning and stabilizing of the entire support plate. A locator roller contacts a "V" shaped notch in a stepped lower rear section of the support plate, biasing stabilizer bars on the rear edge of the rear section against pre-positioned cam followers. Precisely positioning and stabilizing the rear section also positions and stabilizes the entire pallet support plate. The front section of the pallet support plate is now completely free of obstruction, permitting processing of closed end bags, long garments, and other objects that could not be processed with screen printing machines having front locator devices.Type: GrantFiled: March 6, 1996Date of Patent: March 4, 1997Assignee: Svecia USA, Inc.Inventor: Sandor Szarka
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Patent number: 5596925Abstract: Provided is a method and device for stencil printing which can readily achieve a stencil printing of a prescribed even density even when the surface area of the printing surface is great, and which can ensure a multi color printing to be made without mixing of colors even when a large number of copies are to be printed. Printing ink having a sufficient consistency to retain its shape is deposited on a stencil master plate S as ink lumps B, and a stencil master plate S is placed in a pressure chamber 17 with its surface carrying the ink lumps B facing the diaphragm 15, the pressure chamber 17 having a wall portion formed by a diaphragm 15 which is at least either flexible or elastic.Type: GrantFiled: August 14, 1995Date of Patent: January 28, 1997Assignee: Riso Kagaku CorporationInventor: Takanori Hasegawa