US3721189A - Magnetic print cylinder - Google Patents

Magnetic print cylinder Download PDF

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Publication number
US3721189A
US3721189A US00157183A US3721189DA US3721189A US 3721189 A US3721189 A US 3721189A US 00157183 A US00157183 A US 00157183A US 3721189D A US3721189D A US 3721189DA US 3721189 A US3721189 A US 3721189A
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Prior art keywords
magnetic
cylinder
channel member
assemblies
magnetizable
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Expired - Lifetime
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US00157183A
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A Bray
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Magna Graphics Corp
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Magna Graphics Corp
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Assigned to MAGNA-GRAPHIS CORPORATION reassignment MAGNA-GRAPHIS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: L.W.M.J., LTD. (FORMERLY MAGNA-GRAPHICS CORPORATION)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/02—Magnetic devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/033—Magnet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49012—Rotor

Definitions

  • the magnetic plate cylinder of the present invention overcomes the above problems by providing a magnetic field in the entire outer surface of a cylinder using preformed magnetic assemblies.
  • Each of the magnetic assemblies has a plurality of permanent magnets positioned in a spaced relation within a channel member.
  • Nonferrous spacers are used to hold the magnets in the channel member and magnetizable pole pieces are positioned between the spacers and the magnets.
  • a simple and unique mounting arrangement is provided for locking the spacers and pole pieces in the channel members.
  • the permanent magnets may be formed individually or as integral parts of the spacers to simplify the procedure for assembling the channel members.
  • the channel members can be readily adapted to fit on any diameter cylinder without any necessity for chang ing the pole pieces, magnets and spacers.
  • a printing cylinder of this type increases the flexibility of its use to a variety of printing plate sizes and arrangements.
  • FIG. 1 is a perspective view of the magnetic plate cylinder according to the present invention.
  • FIG. 2 is a top view of a portion of one of the magnetic assemblies
  • FIG. 3 is a section view taken on line 3-3 of FIG. 2 showing the magnetic flux field between adjacent pole pieces;
  • FIG. 4 is a section view taken on line 44 of FIG. 3 showing one of the pole pieces
  • FIG. 5 is a section view taken on line 55 of FIG. 3 showing one form of magnetic component
  • FIG. 6 is a view similar to FIG. 5 showing an alternate form of magnetic component.
  • the magnetic plate cylinder 10 of the present invention generally includes a cylinder 12 having journals 14 at each end.
  • the entire outer surface of the cylinder 12 is provided with a magnetic field by means of a plurality of magnetic assemblies 16 mounted thereon.
  • Each of the magnetic assemblies 16 includes a plurality of permanent magnetic components or parts 18 and magnetizable pole pieces 20 which are alternately arranged within a channel member 22.
  • the preassembled magnetic assemblies 16 are mounted on the cylinder 12 and the outer surface of the magnetic assemblies machined to the desired diameter (circumference).
  • a magnetic field is provided on the entire periphery of the cylinder 12 for holding magnetizable printing plates thereon by means of the magnetic assemblies 16.
  • Each of the magnetic assemblies 16 includes a parent or channel member 22, a plurality of permanent magnetic and spacer parts 18, and a plurality of magnetizable pole pieces 20. Referring to FIGS. 2 and 3, a portion of one of the magnetic assemblies 16 is shown with the magnetic and spacer parts 18 and pole pieces 20 alternately arranged in the channel member 22. The magnetic and spacer parts 18 and pole pieces 20 are locked in the member 22 by means of a filler block 30 provided at each end of the member 22.
  • the permanent magnetic and spacer parts 18 are arranged with like magnetic poles adjacent common pole pieces 20 as more particularly described below.
  • the channel members 22 are formed from a magnetic flux insulating material such as a non-ferrous metal, i.e. aluminum or brass, or stainless steel. Means are provided within the members 22 for locking the magnetic and spacer parts 18 and pole pieces 20 in the channel members 22. Such means, as seen in FIGS. 4, 5 and 6, is in the form of a mechanically interlocking element 32 shown as a pair of flanges 32 located on the inside surfaces 34 of said walls 36 of channel members 22. Although flanges 32 are shown any other suitable means such as a dovetail or truncated configuration could be used.
  • the surface 38 on the bottom wall 40 of the member 22 is shaped to matingly engage the outer surface of the cylinder 12 and can be arcuate as shown, or flat.
  • the magnetic and spacer parts 18 can be made as shown in either FIG. 5 or FIG. 6.
  • the component 18 shown in FIG. 5 includes a permanent magnet 42 which is positioned in the bottom of the channel member 22.
  • the magnet 42 is retained therein by means of a spacer 44 which has axially extending slots 46 along each side for engagement with flanges 32 provided in the channel member 22.
  • a permanent magnet 42 is formed as an integral part of a spacer 48.
  • the spacer 48 has the same general outer configuration as the inner shape of the channel member 22. Slots 50 are provided along the sides of the spacer 48 to engage the flanges 32.
  • the spacer (44 and 48) in both FIG. 5 and FIG. 6 is also formed of a magnetic flux insulating material such as a metal or a plastic.
  • the magnetic pole pieces 20 and the filler block 30 also have the same general outer configuration as the interior channel member 22. Slots 52 are provided along the sides of the pole piece 20 and filler block 30 which also correspond to the flanges 32 on the channel member 22. The outer edge 54 of the pole piece should conform to the contemplated radius for the cylinder 10.
  • the magnetic assemblies 16 are assembled by alternately sliding a magnetic and spacer part 18 and a magnetic pole piece 20 into the channel member 22. It should be noted, as seen in FIG. 5, that the components 42 (or FIG. 6 components 48) are alternately turned to provide the south poles of adjacent magnets on both side of a magnetizable pole piece 20 and the north poles of the next adjacent magnets on each side of the next pole piece 20.
  • the filler blocks are secured in the ends of each of the channel members 22 by means of pins 60 which are inserted through openings 62 provided in the channel member 22 into recesses 64 provided in the filler blocks 30.
  • the assemblies 16 are mounted on the cylinder 12 by means of a bolt 66 which extends through opening 68 provided in the filler block 30 and are threadedly received in threaded openings 70 provided in the cylinder 12.
  • the pole piece 20 and magnetic and spacer parts 18 can be adhesively secured in the channel member 22 by any suitable means such as an epoxy resin.
  • the channel members 22 can be adjusted to different radius cylinder 12 by machining the radial angle of the outside surface of the side walls 36 of the member 22 when mounted on the cylinder 12 to provide abutting contact with adjacent magnetic assemblies 16. This is accomplished by initially forming the member 22 with a radially extending side wall at an angle corresponding to the largest diameter cylinder contemplated for a particular set of channel members 22. The channel member can then be adapted for use with smaller cylinders by merely machining the angle of the side walls to the radial angle of the new cylinder.
  • a plate cylinder for use with flexible, magnetizable printing plates, a plate cylinder and a plurality of axially extending magnetic assemblies mounted in a side-by-side relation on the surface of said plate cylinder, each of said assemblies comprising:
  • a channel member having generally radially extendingside walls positioned for abutting engagement with adjacent members
  • said channel member having an outer surface which forms a continuous face for supporting printing plates on the cylinder.
  • each of said magnetic parts includes a permanent magnet.

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  • Printing Plates And Materials Therefor (AREA)

Abstract

A magnetic print cylinder for use with flexible, magnetizable printing plates, the cylinder having a plurality of axially extending, magnetic assemblies mounted in a side-by-side relation on the surface thereof, each of the assemblies including a channel member of magnetic flux insulating material, a plurality of permanent magnetic parts aligned in a spaced relation in the channel member, and a magnetizable pole piece positioned between each pair of magnets, the outer surface of the magnetic assemblies forming the plate mounting surface for the printing plates.

Description

United States Patent [191 Bray [4 lMarch 20, 1973 MAGNETIC PRINT CYLINDER FOREIGN PATENTS OR APPLICATIONS [75] Inv ntor: Andrew M- Bray, tt a 1,142,374 2/1969 Great Britain ..l0l/382 MV Wis. 212,855 1/1961 Austria ..101/382 R 1,004,521 3/1952 France 101/382 MV [731 Asslgnee= fi -G Daymn, 1,076,148 2/1960 Germany ...101/3s2 MV 01110 175,355 5/1961 Sweden ..101/382 MV 22 Filed: 28 1971 1 June Primary Examiner-Robert E. Pulfrey [21 Appl. No.: 157,183 Assistant ExaminerEugene H. Eickholt Attorney-James E. Nilles [52] US. Cl ..101/382 MV, 101/4151 [51 1111.61. ..n41127/00 [57] ABSTRACT [58] Field of Search.10l/382 R, 382 MV, 378, 415.1 A magnetic print cylinder for use with flexible, magnetizable printing plates, the cylinder having a plurali- [56] References Cited ty of axially extending, magnetic assemblies mounted in a side-by-side relation on the surface thereof, each UNITED STATES PATENTS of the assemblies including a channel member of mag- 3,496,866 2/1970 Nystrand ..l0l/378 "etic flux insulating material, a plurality 0f Permanent 3,097,598 7/1963 Hotop et al 10l/378 magnetic Part8 aligned in a Spaced relaflon e 2,763,204 9/1956 Sims, Jr ....1o1/3s2 MV channel member, and a magnetizable p p c p0 3,027,835 4/1962 Meese etal ..101/382 R tioned between each pair of magnets, the outer sur- 3,438,324 4/1969 Meade et a1.... ...10l/382 MV face of the magnetic assemblies forming the plate 2,952,205 9/1960 Dunwoodie 101/378 mounting surface for the printing plates. 1,531,492 3/1925 Marquardt 101/382 MV 3,039,389 6/1962 Meese et a1. ..101/378 6 Claims, 6 Drawing Figures BACKGROUND OF THE INVENTION The increased use of magnetizable type flexible printing plates has produced a need for a magnetic plate cylinder. A number of such cylinders are described in U.S. Pats. No. 3,039,390 issued June 19, 1962 and No. 3,097,598 issued July 16, 1965 entitled Printing Cylinders and U.S. Pat. No. 3,496,866 issued Feb. 24, 1970 entitled Magnetic Plate Cylinder. These three patents generally show the three types of cylinders which have been used for this purpose. The first two patents disclose plate cylinders which are provided with annular magnetic poles on the outer surface of the cylinder. The plate cylinders in both of these patents are complicated and require considerable time to assemble. The plate cylinder in U.S. Pat. No. 3,496,866 shows axially extending pole pieces which are used to hold down only the ends of the printing plate. Mounting of the printing plate on this type of printing cylinder is limited to the location of the magnetic pole pieces.
SUMMARY OF THE INVENTION The magnetic plate cylinder of the present invention overcomes the above problems by providing a magnetic field in the entire outer surface of a cylinder using preformed magnetic assemblies. Each of the magnetic assemblies has a plurality of permanent magnets positioned in a spaced relation within a channel member. Nonferrous spacers are used to hold the magnets in the channel member and magnetizable pole pieces are positioned between the spacers and the magnets. A simple and unique mounting arrangement is provided for locking the spacers and pole pieces in the channel members. The permanent magnets may be formed individually or as integral parts of the spacers to simplify the procedure for assembling the channel members. The channel members can be readily adapted to fit on any diameter cylinder without any necessity for chang ing the pole pieces, magnets and spacers. A printing cylinder of this type increases the flexibility of its use to a variety of printing plate sizes and arrangements.
Other objects and advantages will become apparent when read in connection with the accompanying drawings.
THE DRAWINGS FIG. 1 is a perspective view of the magnetic plate cylinder according to the present invention;
FIG. 2 is a top view of a portion of one of the magnetic assemblies;
FIG. 3 is a section view taken on line 3-3 of FIG. 2 showing the magnetic flux field between adjacent pole pieces;
FIG. 4 is a section view taken on line 44 of FIG. 3 showing one of the pole pieces;
FIG. 5 is a section view taken on line 55 of FIG. 3 showing one form of magnetic component; and
FIG. 6 is a view similar to FIG. 5 showing an alternate form of magnetic component.
DESCRIPTION OF THE INVENTION Referring to FIG. 1 of the drawings, the magnetic plate cylinder 10 of the present invention generally includes a cylinder 12 having journals 14 at each end. The entire outer surface of the cylinder 12 is provided with a magnetic field by means of a plurality of magnetic assemblies 16 mounted thereon. Each of the magnetic assemblies 16 includes a plurality of permanent magnetic components or parts 18 and magnetizable pole pieces 20 which are alternately arranged within a channel member 22. The preassembled magnetic assemblies 16 are mounted on the cylinder 12 and the outer surface of the magnetic assemblies machined to the desired diameter (circumference).
MAGNETIC ASSEMBLIES In accordance with the invention, a magnetic field is provided on the entire periphery of the cylinder 12 for holding magnetizable printing plates thereon by means of the magnetic assemblies 16. Each of the magnetic assemblies 16 includes a parent or channel member 22, a plurality of permanent magnetic and spacer parts 18, and a plurality of magnetizable pole pieces 20. Referring to FIGS. 2 and 3, a portion of one of the magnetic assemblies 16 is shown with the magnetic and spacer parts 18 and pole pieces 20 alternately arranged in the channel member 22. The magnetic and spacer parts 18 and pole pieces 20 are locked in the member 22 by means of a filler block 30 provided at each end of the member 22. The permanent magnetic and spacer parts 18 are arranged with like magnetic poles adjacent common pole pieces 20 as more particularly described below.
The channel members 22 are formed from a magnetic flux insulating material such as a non-ferrous metal, i.e. aluminum or brass, or stainless steel. Means are provided within the members 22 for locking the magnetic and spacer parts 18 and pole pieces 20 in the channel members 22. Such means, as seen in FIGS. 4, 5 and 6, is in the form of a mechanically interlocking element 32 shown as a pair of flanges 32 located on the inside surfaces 34 of said walls 36 of channel members 22. Although flanges 32 are shown any other suitable means such as a dovetail or truncated configuration could be used. The surface 38 on the bottom wall 40 of the member 22 is shaped to matingly engage the outer surface of the cylinder 12 and can be arcuate as shown, or flat.
The magnetic and spacer parts 18 can be made as shown in either FIG. 5 or FIG. 6. In this regard, the component 18 shown in FIG. 5 includes a permanent magnet 42 which is positioned in the bottom of the channel member 22. The magnet 42 is retained therein by means of a spacer 44 which has axially extending slots 46 along each side for engagement with flanges 32 provided in the channel member 22. In the alternate arrangement shown in FIG. 6, a permanent magnet 42 is formed as an integral part of a spacer 48. The spacer 48 has the same general outer configuration as the inner shape of the channel member 22. Slots 50 are provided along the sides of the spacer 48 to engage the flanges 32. The spacer (44 and 48) in both FIG. 5 and FIG. 6 is also formed of a magnetic flux insulating material such as a metal or a plastic.
The magnetic pole pieces 20 and the filler block 30 also have the same general outer configuration as the interior channel member 22. Slots 52 are provided along the sides of the pole piece 20 and filler block 30 which also correspond to the flanges 32 on the channel member 22. The outer edge 54 of the pole piece should conform to the contemplated radius for the cylinder 10.
The magnetic assemblies 16 are assembled by alternately sliding a magnetic and spacer part 18 and a magnetic pole piece 20 into the channel member 22. It should be noted, as seen in FIG. 5, that the components 42 (or FIG. 6 components 48) are alternately turned to provide the south poles of adjacent magnets on both side of a magnetizable pole piece 20 and the north poles of the next adjacent magnets on each side of the next pole piece 20.
The filler blocks are secured in the ends of each of the channel members 22 by means of pins 60 which are inserted through openings 62 provided in the channel member 22 into recesses 64 provided in the filler blocks 30.
The assemblies 16 are mounted on the cylinder 12 by means of a bolt 66 which extends through opening 68 provided in the filler block 30 and are threadedly received in threaded openings 70 provided in the cylinder 12. The pole piece 20 and magnetic and spacer parts 18 can be adhesively secured in the channel member 22 by any suitable means such as an epoxy resin.
It should be noted that the dimensions of the magnetic and spacer part 18 and pole pieces 20 are standardized for ease of assembly in the channel member 22. The channel members 22 can be adjusted to different radius cylinder 12 by machining the radial angle of the outside surface of the side walls 36 of the member 22 when mounted on the cylinder 12 to provide abutting contact with adjacent magnetic assemblies 16. This is accomplished by initially forming the member 22 with a radially extending side wall at an angle corresponding to the largest diameter cylinder contemplated for a particular set of channel members 22. The channel member can then be adapted for use with smaller cylinders by merely machining the angle of the side walls to the radial angle of the new cylinder.
I claim:
1. In a printing cylinder for use with flexible, magnetizable printing plates, a plate cylinder and a plurality of axially extending magnetic assemblies mounted in a side-by-side relation on the surface of said plate cylinder, each of said assemblies comprising:
a channel member having generally radially extendingside walls positioned for abutting engagement with adjacent members,
a plurality of permanent magnetic parts and magnetizable pole pieces alternately arranged in said channel member, and
means for locking the magnetic parts and pole pieces in the channel member,
said channel member having an outer surface which forms a continuous face for supporting printing plates on the cylinder.
2. The cylinder according to claim 1 wherein said holding means comprises a mechanically interlocking element in said channel member.
3. The cylinder according to claim 1, wherein each of said magnetic parts includes a permanent magnet.
4. The cylinder according to claim 1 wherein the outer side walls of said channel member extend radially outward from the surface of said plate cylinder.
5. The cyllnder according to clalm 1 wherein said magnetic part includes an integral permanent magnet.
6. The cylinder according to claim 1 wherein said channel member is formed from a magnetic flux insulating material.

Claims (6)

1. In a printing cylinder for use with flexible, magnetizable printing plates, a plate cylinder and a plurality of axially extending magnetic assemblies mounted in a side-by-side relation on the surface of said plate cylinder, each of said assemblies comprising: a channel member having generally radially extending side walls positioned for abutting engagement with adjacent members, a plurality of permanent magnetic parts and magnetizable pole pieces alternately arranged in said channel member, and means for locking the magnetic parts and pole pieces in the channel member, said channel member having an outer surface which forms a continuous face for supporting printing plates on the cylinder.
2. The cylinder according to claim 1 wherein said holding means comprises a mechanically interlocking element in said channel member.
3. The cylinder according to claim 1, wherein each of said magnetic parts includes a permanent magnet.
4. The cylinder according to claim 1 wherein the outer side walls of said channel member extend radially outward from the surface of said plate cylinder.
5. The cylinder according to claim 1 wherein said magnetic part includes an integral permanent magnet.
6. The cylinder according to claim 1 wherein said channel member is formed from a magnetic flux insulating material.
US00157183A 1971-06-28 1971-06-28 Magnetic print cylinder Expired - Lifetime US3721189A (en)

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Cited By (33)

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US3824926A (en) * 1972-08-18 1974-07-23 Yamauchi Rubber Ind Co Inc Printing magnetic saddle
US3919937A (en) * 1974-03-15 1975-11-18 Donnelley & Sons Co Magnetic cylinder for printing presses
FR2337044A1 (en) * 1975-12-30 1977-07-29 Andersson Lars E BRAILLE PRINTING DEVICE
US4116594A (en) * 1975-12-12 1978-09-26 Magna-Graphics Corporation Embossing apparatus having magnetic roller and flexible embossing plates therefor
US4191105A (en) * 1977-02-07 1980-03-04 Sisenca S.A. Printing apparatus
US4259801A (en) * 1977-04-22 1981-04-07 Kokusai Display Kogyo Co., Ltd. Display device
US4558294A (en) * 1983-03-31 1985-12-10 Hitachi Metals, Ltd. Magnet roll and method of producing the same
US4703464A (en) * 1985-05-10 1987-10-27 Raytheon Company Permanent magnet biased magnetostrictive transducer
US4852490A (en) * 1988-06-27 1989-08-01 T. D. Wright, Inc. Magnetic cylinder having rigid support for magnet cover
US5030937A (en) * 1989-08-02 1991-07-09 Xolox Corporation Magnet roll
EP0608152A1 (en) * 1993-01-22 1994-07-27 Magnaflex Systems Limited Rotary press cutters
US5627505A (en) * 1996-07-01 1997-05-06 T. D. Wright, Inc. Magnetic cylinder with axial extending permanent bar magnets
US5711223A (en) * 1995-08-14 1998-01-27 Eugene L. Green, Sr. Magnetic plate cylinder
US5792262A (en) * 1995-11-21 1998-08-11 Bielomatik Leuze Gmbh & Co. Processing tool for processing ply material or the like
US5797323A (en) * 1996-01-26 1998-08-25 Kocher + Beck Gmbh & Co. Printing cylinder for a printing plate made of a magnetizable carrier material
US6152035A (en) * 1999-12-17 2000-11-28 Universal Engraving, Inc. Magnetic support plate for cladded steel and steel-backed polymer stamping/blocking and embossing graphic arts dies
US6160465A (en) * 1997-11-07 2000-12-12 Murata Manufacturing Co. Ltd. High-frequency choke coil
US6397747B1 (en) * 2000-07-06 2002-06-04 T. D. Wright, Inc. Magnetic cylinder for printing plate with nonmagnetic shell
US6454686B1 (en) * 2001-04-30 2002-09-24 T.D. Wright, Inc. Modular magnetic cylinder
US6694872B1 (en) 1999-06-18 2004-02-24 Holographic Label Converting, Inc. In-line microembossing, laminating, printing, and diecutting
US6694873B1 (en) 1999-06-18 2004-02-24 Holographic Label Converting, Inc. Microembosser for faster production of holographic labels
US20050257594A1 (en) * 2004-05-21 2005-11-24 Larry Hutchison Graphic arts die and support plate assembly
US20060127519A1 (en) * 2002-11-20 2006-06-15 Uyttenboogaart Paul R Belt and tread drum
EP1702747A1 (en) * 2005-03-14 2006-09-20 Sant'Andrea S.p.A. Embossing device
US20070172261A1 (en) * 2002-07-15 2007-07-26 Jds Uniphase Corporation Apparatus For Orienting Magnetic Flakes
US20100055221A1 (en) * 2008-09-04 2010-03-04 Bunting Magnetics Co. Assembly and Method for Magnetic Embossing Roll Surfacing
US20100170408A1 (en) * 2007-02-20 2010-07-08 Kba-Giori S.A. Cylinder Body for Orienting Magnetic Flakes Contained in an Ink or Varnish Vehicle Applied on a Sheet-Like or Web-Like Substrate
WO2013002734A1 (en) * 2011-06-28 2013-01-03 Agency For Science, Technology And Research Imprinting apparatus and method
WO2018009242A1 (en) * 2016-07-07 2018-01-11 Bunting Magnectics Company Magnetic roll
US20180086127A1 (en) * 2015-04-21 2018-03-29 Think Laboratory Co., Ltd. Functional cylinder body and manufacturing method therefor
US11230127B2 (en) 2002-07-15 2022-01-25 Viavi Solutions Inc. Method and apparatus for orienting magnetic flakes
WO2022053860A1 (en) * 2020-09-08 2022-03-17 Rotometal Sp. Z O.O. Magnetic cylinder particularly for a device for printing and a method for producing the magnetic cylinder
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Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824926A (en) * 1972-08-18 1974-07-23 Yamauchi Rubber Ind Co Inc Printing magnetic saddle
US3919937A (en) * 1974-03-15 1975-11-18 Donnelley & Sons Co Magnetic cylinder for printing presses
US4116594A (en) * 1975-12-12 1978-09-26 Magna-Graphics Corporation Embossing apparatus having magnetic roller and flexible embossing plates therefor
FR2337044A1 (en) * 1975-12-30 1977-07-29 Andersson Lars E BRAILLE PRINTING DEVICE
US4191105A (en) * 1977-02-07 1980-03-04 Sisenca S.A. Printing apparatus
US4259801A (en) * 1977-04-22 1981-04-07 Kokusai Display Kogyo Co., Ltd. Display device
US4558294A (en) * 1983-03-31 1985-12-10 Hitachi Metals, Ltd. Magnet roll and method of producing the same
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