121 |
Process for producing a printing form |
US09184880 |
1998-11-03 |
US06309799B1 |
2001-10-30 |
Siegfried Rückl |
The invention relates to a process for producing a printing form, in which a covering layer (5) is applied to a first radiation-sensitive layer (4) arranged on a carrier (1), the applied covering layer (5) is structured in accordance with a pattern to be printed, in order to form an irradiation mask (5′), and the radiation-sensitive layer (4) is irradiated and developed. In this way, in the production of printing forms, an irradiation mask (5′) can be applied very precisely in accordance with a pattern to be printed later. |
122 |
Heat transfer |
US09413519 |
1999-10-06 |
US06232041B1 |
2001-05-15 |
Chris Roberts; James Glassburn |
A method of making a heat transfer from an image for application to a T-shirt or other piece of cloth is disclosed. An image is scanned to create a computer image represented by a computer readable image file. The image is separated into a plurality of colors using a computer to create a separated image. A plurality of plates is created from the separated image corresponding to each of the colors. The plates are printed on film to create a plurality of color separation films corresponding to one of the plurality of colors. Mesh screens are treated with a photoemulsion. The color separation films are then placed on the mesh screens and light is applied to the mesh screens A portion of the photoemulsion hardens in the light and a second portion of the photemulsion covered by the printed matter on the color separation films remains soft. The mesh screens are washed to remove the second portion of the photoemulsion. Ink is applied to a piece of transfer paper through the mesh screens. |
123 |
Computerized cutting method and apparatus for use in printing operations |
US189828 |
1998-11-10 |
US06058839A |
2000-05-09 |
Joseph R. Frazzitta |
In a printing method, an electrically encoded image to be transferred to a printing substrate during a printing process is provided in an electronic memory. A flexible carrier web is attached under tension to a cutting cylinder with an adjustable diameter. The cutting cylinder is adjusted to have a diameter which matches the diameter of a blanket or printing cylinder of a printing machine. The length of the cutting cylinder is at least as great as the length of the blanket or printing cylinder. The carrier web is cut automatically in accordance with the electrically encoded image after attachment of the carrier web to the adjusted cutting cylinder. |
124 |
Powder-blasting method |
US968375 |
1997-11-12 |
US6048670A |
2000-04-11 |
Joseph C.M. Bosman; Harm Tolner; Henricus J. Ligthart; Franciscus C.M. De Haas |
Method of providing a pattern of apertures and/or cavities in a plate of material which is suitable for powder blasting, or of cutting pieces from a plate (2) of such a material by means of powder blasting, using a non-metal layer of blast-resistant material (3) as a mask which is patterned while or after it is fixedly provided on the surface of the plate. |
125 |
Method for engraving and/or etching with image-carrying mask and photo-sensitive laminate film for use in making the mask |
US60851096 |
1996-02-28 |
US5629132B1 |
2000-02-08 |
SUZUKI TSUTOMU; SUZUKI IKUO |
|
126 |
Screen printing stencil |
US142021 |
1999-06-02 |
US5994033A |
1999-11-30 |
Robert S. Davidson; Stuart J. Palmer; Julie E. Pratt; Stephen P. Wilson |
A screen printing stencil made from a composition comprising polyhydroxy compounds having a plurality of 1,2- or 1,3-diol groups along a polymer backbone, the diol groups grafted thereto a compound of formula (I) (where A is an arylene or an alkylene group; X is an oxygen atom, a sulfur atom, a carbon-carbon bond, or a group of formula (a), (b) or (c); R is a hydrogen atom or a methyl group; R.sup.1 is a (C.sub.1 -C.sub.4) alkyl group; m is an integer of from 1 to 8; n is an integer of from 1 to 3; and p is 1 or 2); or an acetal of the polyhydroxy, compound with ethylene glycol. |
127 |
Photosensitive resin composition for sandblast resist |
US18729 |
1998-02-04 |
US5916738A |
1999-06-29 |
Hiroshi Takehana; Tetsuo Yamamoto; Hiroyuki Obiya; Ryuma Mizusawa |
Disclosed is a photosensitive resin composition suitable as a resist material against sandblasting for pattern-wise engraving of the surface of a body after photolithographic patterning, which comprises: (a) a urethane compound having a (meth)acrylate group at the molecular end, which is obtained from a polyether or polyester compound having a hydroxy group at the molecular chain end, a diisocyanate compound and a (meth)acrylate compound having a hydroxy group; (b) an alkali-soluble polymeric compound having an acid value in the range from 50 to 250 mg KOH/g; and (c) a photopolymerization initiator. |
128 |
Optimized in-line mask cleaning system |
US21046 |
1998-02-09 |
US5916374A |
1999-06-29 |
Jon A. Casey; Michael E. Cropp; Donald W. DiAngelo; John F. Harmuth; John U. Knickerbocker; David C. Long; Daniel S. Mackin; Glenn A. Pomerantz; Krishna G. Sachdev; David E. Speed; Candace A. Sullivan; Robert J. Sullivan; Bruce E. Tripp; James C. Utter |
A cleaning method and related apparatus for cleaning semiconductor screening masks using an aqueous alkali detergent solution applied under high pressure simultaneously from both sides of the mask, followed by a drying step that uses air knives to blow off the mask surface any residual cleaner solution. |
129 |
Device and method for producing a screen printing stencil having
improved image sharpness |
US502848 |
1995-07-14 |
US5821980A |
1998-10-13 |
Siegfried Horfarter |
A device for producing a screen printing stencil has a light source for emitting a bundle of light whose focus lies in the region of a light-sensitive layer present on a stencil screen. Furthermore, there is an apparatus for generating a relative movement between the bundle of light being incident on the light-sensitive layer in accordance with a desired stencil pattern. The bundle of light is linearly polarized in at least one section. An electro-optical modulator for rotating the plane of oscillation of the bundle of light is arranged in this section. The electro-optical modulator rotates the plane of oscillation of the bundle of light in accordance with received stencil pattern data. An analyzer is positioned in the light path downstream of the electron optical modulator. The analyzer passes the bundle of light having a plane of oscillation at one orientation and blocks the bundle of light having a plane of oscillation at an opposite orientation. As a result of the device, the bundle of light is able to be switched on and off of the light-sensitive layer very rapidly, which leads to extremely sharp edges of the pattern structure. |
130 |
Method for manfacturing an orifice plate |
US737886 |
1996-11-22 |
US5766441A |
1998-06-16 |
Stefan Arndt; Dietmar Hahn; Heinz Fuchs; Gottfried Flik; Guenter Dantes; Gilbert Moersch; Detlef Nowak; Joerg Heyse; Beate Ader; Frank Schatz |
A method for manufacturing an orifice plate that is built up in multiple layers and includes a complete axial through passage for a fluid. The orifice plate includes inlet openings, outlet openings, and at least one conduit lying between them. The layers or functional planes of the orifice plate are built up on one another by electroplating metal deposition (multilayer electroplating). Orifice plates manufactured in this manner are particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, inhalers, or inkjet printers, or in freeze-drying processes, for spraying or injecting fluids such as beverages. |
131 |
Photosensitive resin composition for sandblast resist |
US638189 |
1996-04-26 |
US5756261A |
1998-05-26 |
Hiroshi Takehana; Tetsuo Yamamoto; Hiroyuki Obiya; Ryuma Mizusawa |
Disclosed is a photosensitive resin composition suitable as a resist material against sandblasting for pattern-wise engraving of the surface of a body after photo-lithographic patterning, which comprises: (a) a urethane compound having a (meth)acrylate group at the molecular end, which is obtained from a polyether or polyester compound having a hydroxy group at the molecular chain end, a diisocyanate compound and a (meth)acrylate compound having a hydroxy group; (b) an alkali-soluble polymeric compound having an acid value in the range from 50 to 250 mg KOH/g; and (c) a photopolymerization initiator. |
132 |
Membrane filter and a method of manufacturing the same as well as a
membrane |
US646351 |
1996-05-10 |
US5753014A |
1998-05-19 |
Cornelis Johannes Maria Van Rijn |
A membrane filter comprises a membrane provided with pores with a pore size between 5 nm and 50 .mu.m. The membrane may easily and reliably be processed with use of silicon micromachining through depositing a relatively thin membrane layer on a support, by use of a suitable vapour deposition or spincoating technique, after which perforations are made in the thin membrane layer, for example by etching with aid of photo-lithography or an imprint technique. Such a membrane is very well applicable for the separation of biological cells. A membrane with a thickness smaller than the diameter of the perforations is in particular suited for the separation of vulnerable cells and may be used as a leucocyte filter or as a blood plasma separator of blood concentrates. A microfiltration membrane according to the invention may very well be applied as a support for the deposition of a separation layer for ultrafiltration, gas separation or catalysis. |
133 |
Annular shaped silk screen member for silk screen printing halftones |
US635734 |
1996-04-22 |
US5732624A |
1998-03-31 |
William M. Karlyn; David A. Scher |
Silk-screens of annular-shape are provided for the silk-screen printing of halftones on compact discs. The silk-screens are rotatably provided in a carrier so that the angle at which moire can be eliminated or at least minimized or localized for the printing of a particular color can be determined. Following the determination of that angle for each of the colors to be printed, the screens are each then provided with photosensitive emulsion, exposed to light, and washed. The silk-screens are then placed in another carrier at the same angle as before determined for the elimination or at least the mimimalization or localization of moire, this carrier being capable of being placed directly into the nest of a print head of a conventional silk-screen printing machine. |
134 |
Non-photosensitive aqueous blockout composition and blockout method for
repairing flaws |
US451488 |
1995-05-26 |
US5654032A |
1997-08-05 |
Alexander S. Gybin; Kyle K. Johnson; Toshifumi Komatsu; Lawrence C. Vaniseghem |
The invention resides in a photosensitive composition for screen printing. Preferably, the composition of the invention comprises a polymer comprising a vinylpyridine monomer or polymer having a pyridinium salt character and a photoreactable constituent. The resulting stencil, once dried, exposed, cured, and subjected to alkaline treatment obtains enhanced solvent/water resistance but can be reclaimed using an acidic wash. In use, the stencil provides a screen/stencil assembly or blockout utility of high structural integrity through repeated use and screen printing images of high resolution and quality. |
135 |
Method for engraving and/or etching with image-carrying mask and
photo-sensitive laminate film for use in making the mask |
US608510 |
1996-02-28 |
US5629132A |
1997-05-13 |
Tsutomu Suzuki; Ikuo Suzuki |
A method for engraving and/or etching comprising the steps of: (a) a process for exposing, to light, a layer of a water-soluble resin composition of a laminated photo-sensitive film which comprises a supporting sheet, a image mask-protection layer peelablly adhered to the supporting sheet and a layer of a water-soluble resin composition having photocrosslinkability to thus cause crosslinking of the exposed area of the resin layer to thereby form a predetermined pattern on the resin layer; (b) a process for dissolving out the non-crosslinked portion of the layer of the water-soluble photo-sensitive resin composition by developing the layer with water to thus from an image-carrying mask which is constituted from the crosslinked area of the photo-sensitive resin composition remaining on the image mask-protection layer; (c) a process for adhering the photo-sensitive laminate film on which the images are formed to the surface of a material to be processed; (d) a process for peeling off the supporting sheet from the photo-sensitive laminate film; and (e) a process for engraving and/or etching the material to be processed through the image-carrying mask adhered to the material, makes it possible to engrave and/or etch fine and precises images on the surface of a material to be processed such as glass, metals, plastics or the like. |
136 |
Decorative plate |
US369404 |
1995-01-05 |
US5609967A |
1997-03-11 |
Hiromi Matsunami |
Provided is a process for preparing a decorative plate in which delicate gradation and shadow of a pattern from a photograph or the like can be reproduced with improved sharpness and clarity. The decorative plate has improved adhesive characteristics allowing the pattern forming plating layers to adhere to a substrate with excellent durability.In the decorative plate, a plating layer is formed so that a desired pattern is formed on a substrate made of stainless steel. The portions other than the plating layer comprise a large number of lines having a predetermined line density. The decorative plate is prepared through a masking step, a plating step and a step of removing a masking layer. The masking process comprises a step of coating a light-sensitive resin on a screen having meshes, curing the light-sensitive resin using a photographic film, mounting the film on the screen and allowing the resin to cure by UV rays. The uncured resin is then removed from the screen, the screen is mounted on a substrate, and an ink layer is formed by a printing process. |
137 |
Method for forming a screen for screen printing a pattern of small
closely spaced features onto a substrate |
US488704 |
1995-06-09 |
US5588359A |
1996-12-31 |
Jim Hofmann; Darryl Stansbury |
A method for forming a screen suitable for screen printing a pattern of small closely spaced features onto a substrate is provided. The method includes the steps of providing a fine mesh screen and then forming a patterning layer on the mesh using a photosensitive emulsion. A mask or phototool is used to pattern the patterning layer. During the patterning process, open areas of the mask are aligned with the openings on the mesh using a microscope or other vision device to align the mask with the mesh. During a screen printing process, the open areas of the patterning layer will thus not be obstructed or split into smaller openings by the screen wires. The patterning layer can be patterned using laser energy directed through the mask or using UV exposure followed by development with a suitable developer. |
138 |
Method for preparing a screen printing stencil |
US849862 |
1992-03-12 |
US5478699A |
1995-12-26 |
Daniel R. Blessington, deceased; Gary T. Marks; Jerry E. Sergent; Judy A. Sline; Stephen A. De Lucia |
To prepare a screen printing stencil, a pattern of resist, having a complementary design to the final screen printing stencil, is applied to a conductive mandrel. A patterned layer is electroformed onto the exposed surface of the mandrel such that the layer corresponds to the exposed orifices of the pattern of resist. The resulting screen printing stencil can have an overgrowth geometry or a straight-wall geometry depending on the type of photoresist employed, and can be used in the electronic substrate fabrication and electronic assembly industries. |
139 |
Apparatus for manufacturing screen printing plates |
US329157 |
1994-10-26 |
US5456174A |
1995-10-10 |
Ti-Kun Hung; Yin-Chern Hung |
A screen printing apparatus includes a screen exposed to a light source. A conveyer is arranged for receiving the exposed screen. Another conveyer is disposed below the previous conveyer and extended distal to the light source for receiving and for moving the screen. A turning device is disposed between the conveyers for turning the screen up-side-down. A washing device may provide water for washing the screen. A drying device is disposed beside the washing device for drying the washed screen. The screen printing plate can be made automatically. |
140 |
Process for making improved metal stencil screens for screen printing |
US206377 |
1994-03-07 |
US5447757A |
1995-09-05 |
Allan Cairncross; Chester A. Thayer, II |
Polymeric ledges on a metal stencil screen are made using a polymeric layer which is partially removed by a developer solution. |