US3824928A - Flexible printing plate locking device for rotary printing press - Google Patents

Flexible printing plate locking device for rotary printing press Download PDF

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Publication number
US3824928A
US3824928A US00354960A US35496073A US3824928A US 3824928 A US3824928 A US 3824928A US 00354960 A US00354960 A US 00354960A US 35496073 A US35496073 A US 35496073A US 3824928 A US3824928 A US 3824928A
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United States
Prior art keywords
jaw
cylinder
sleeve
plate
extending
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Expired - Lifetime
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US00354960A
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English (en)
Inventor
K Langer
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Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Roland Offsetmaschinenfabrik Faber and Schleicher AG
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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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1243—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • sleeve ally extending jaws and with the sleeve being provided with a longitudinal clearance slot.
  • a clamping screw is provided at the end of the sleeve for imparting relative rocking motion to the shaft so as to grip the end of a plate inserted between the jaws.
  • the sleeve moreover, has a ack screw at its end for rocking the entire jaw assembly for tensioning and peripherally positioning the plate.
  • the sleeve has an extension in the form of a collar for mounting the clamping screw and jack screw.
  • the sleeve and collar are mounted for axial sliding movement in the cylinder, and an axially oriented adjusting screw is interposed between the collar and the cylinder for endwise crowding of the collar in one direction or the other.
  • the collar is provided with an eccentrically located stop screw and the cylinder, is provided with a stop member in the path of rocking movement of the stop screw.
  • the stop member is rotatable and has stop surfaces in the form of facets of different radial dimension which are selectively interposeable.
  • Auxiliary jaw members are mounted coaxially with respect to the main jaw members and have respective axially facing keyed connections therewith which may be engaged to extend the effective width of the jaw thereby to accommodate plates of different width.
  • the sleeve telescopes into an undercut cylindrical recess which not only permits rocking movement of the sleeve but which enables convenient endwise adjustment as may be necessary to achieve precise axial register. It is, accordingly, an object to provide a lock-up mechanism which may be easily operated and in which the turning of three easily accessible screws accomplishes the functions of clamping, axial register, and peripheral register and tensioning.
  • FIG. 5a is a longitudinal section looking along the line 5a5a in FIG. 6.
  • FIG. 6 is a fragmentary end view looking along the line 6-6 in FIG. 5a.
  • FIG. 7 is a fragmentary longitudinal section looking along the line 7-7 in FIG. 6.
  • FIG. 8 shows a first jaw member forming part of the assembly.
  • FIG. 9 shows a second jaw member which is telescoped into the member shown in FIG. 8.
  • FIG. 10 is a perspective view of a typical printing plate.
  • FIG. 10 A typical plate indicated at 1 in, FIG. 10 has bent-over end portions 9 formed with respective registering notches 9a to which reference will subsequently be made.
  • the cyliner 10 As to the construction of the cyliner 10 it will be seen that it is of composite construction having a cylindrical body 11 (FIG. 2) and end members 12 (FIG. 5) with journals 13 extending outwardly in opposite directions.
  • the cylindrical body has undercut machined recesses 15 at the left-hand end for accommodating the lock-up mechanism associated with the plates 1-4 and similar recesses 16 at the right-hand end for accommodating the lock-up mechanism associated with plates 5-8.
  • the jaw assembly for engaging one end of one of the plates is substantially duplicated for each of the ends of all of the other plates, so that one of the mechanisms will be taken as typical and identical numerals will be employed to identify corresponding elements in the other assemblies.
  • assemblies of substantially the same design are arranged end to end to service plates lying side by side and, in the same recess, to service adjacent ends of two different plates. Referring to FIGS.
  • a jaw assembly 20 formed of a tensioning jaw member 21 and a clamping jaw member 22.
  • Such members illustrated at FIGS. 8 and 9 respectively, occupy normally telescoped positions but have been shown separated in these figures in order that the details of each might be understood.
  • the tensioning jaw member 21 it is made up of a hollow cylindrical sleeve 23 having a radially projecting jaw 24 extending along its length and projecting in a generally radial direction.
  • the jaw 24 is of tapered spade-like shape having a flat clamping face 25, the jaw preferably being machined integrally with the sleeve 23.
  • Extending longitudinally of the sleeve and adjacent the jaw is a clearance slot 26.
  • key pro jections, or claws, 27 At the lefthand end of the member shown in FIG. 8 are key pro jections, or claws, 27 for the purpose of transmitting operating torque to the sleeve and jaw, as will appear.
  • clamping jaw member shown in FIG. 9, it consists of a shaft 33 having a jaw 34 which extends generally radially of the shaft and which has a flat face 35. At the left-hand end of the shaft 33 is a set 3 of key projections 37 for torque transmitting purposes, as will appear.
  • the jaw 34 When the two members are telescoped together the jaw 34 extends'through the clearance slot 26 as illustrated in FIG. 4, the slot being of sufficient peripheral extent so that the jaw 34 may be rocked relatively back and forth as required for clamping the end of a printing plate.
  • the opposed surfaces 25, 35 are substantially parallel to one another, with the two surfaces being constantly urged apart .by means of one or more recessed separator springs 38.
  • the jaw is fitted with a registration pin 39 which mates with one of the notches 9a in the end portion of the printing plate (FIG. 10).
  • a registering clearance opening 39a is formed in the opposite jaw to clear the pin.
  • means are provided at the end of the cylinder for (a) applying torque to the clamping jaw member relative to the tensioning jaw member for clamping the plate and for (b) rocking the two jaw members together, relative to the cylinder, for the purpose of tensioning and positioning the plate.
  • a jaw assembly For convenience, an assemblymade up of the two jaw members may be referred to as a jaw assembly.
  • a collar and shaft extension are provided, one telescoped inside the other.
  • the sleeve 23 is keyed to a collar 4l'while the shaft 33 is keyed to a shaft extension 42.
  • the keyed engagement between the sleeve and collar and between the shaft and its extension is diagrammatically indicated at 43,
  • an axial clamping bolt 45 is provided which extends through a central bore in the shaft extension 42 and which has a force transmitting shoulder 46 which presses axially inward upon the collar 41. It will be understood, however, that with the clamping bolt 45 in place the clearances are such as to permit the shaft extension to be freely rotatable within the collar.
  • the collar 41 is provided with an integral bracket 50 into which is threaded a clamping screw 51 having a tip 52 which bears against an arm, or radially extending lug, 53 formed at'the end of the shaft extension. It will suffice to say that turning the clamping screw 51 in the tightening direction rocks the shaft 33 so as to clamp the jaw 34 tightly against the plate.
  • Means are further provided on the collar 41 for rotating the jaw assembly relative to the cylinder. This is accomplished by a jack screw 55 which is threaded into the same bracket 50 so that its tip 56 engages a land 57 on the cylinder. Thus turning the jack screw 55 in the tightening direction causes the screw to crowd against the surface 57 so that the entire jaw assembly is rocked in a direction to tension the plate.
  • a reference position for the jaw assembly is a position in which the croresponding end of the plate is in nominal register thereby making it easy for the press operator to grossly register the jaw assembly during the registering procedure and so that only relatively small touch up adjustments in register will thereafter be required.
  • the collar 41 has a bracket or arm 60 which carries an eccentric stop 61, the stop being in the form of a set screw having a locking nut so that the tip of the screw, indicated at 62, bears a fixed reference position to the collar.
  • a stop member 63 is provided having stop surfaces 64, 65 selectively interposeable in the path of movement of the screw.
  • a relief 66 In between the stop surfaces is a relief 66.
  • the stop member 63 is rotatable (see also FIG. 7) having a shank which is snugly received in a bore 71.
  • a locking disc 73 Secured to the shank by means of screws 72 is a locking disc 73, the edge of which is held captive by a stop clamping screw 74 having a collar 75. Turning the screw 74 clamps the collar so that the appropriate one of the surfaces 64, 65 or the relief 66, is positioned in the path of movement of the screw.
  • laterally adjacent jaw assemblies are made as mirror images of one another with a rotatable stop member 63 being located symmetrically in between, the stop member having a double set of symmetrically positioned stop surfaces for either separately or simultaneously performing a stop function for both of the jaw assemblies.
  • the duality and symmetry will be clear from FIG. 6. Reference'to a typical adjustment procedure isdeferred until a later point in the discussion.
  • the surfaces 64, 65 may be conveniently referred to as facets or faces which may be either flat or curved.
  • Means are provided for not only rocking the jaw assembly so as to provide peripheral register but also for moving the jaw assembly endwise within the cylinder to achieve accurate axial register. This is accomplished by making the collar, and the sleeve to which it is connected, freely slidable within the cylinder in the axial direction and by interposing between the collar and the cylinder an axially oriented adjusting screw.
  • an adjusting screw is provided which is screwed into a tapped opening 81 in the cylinder and which has flanges 82 which straddle a lug 83 integrally formed on the collar.
  • the two jaw assemblies which lie laterally adjacent one another are not only of mirror image but share a common recess 15 which is of special shape.
  • the recess, indicated at 15, is of undercut, or triangular, shape which conforms to the tapering spade-like configuration of the jaws.
  • the triangular undercut makes for a high degree of compactness with very little peripheral space lost between the two adjacent assemblies.
  • bores are provided in the body of the cylinder as indicated at 91, 92, the bores merging with, and forming a part of, the recess 15.
  • bores 91, 92 extend the entire axial distance through the cylinder so that the inner and outer" ones of the axially adjacent jaw assemblies may be clamped up and adjusted at opposite ends of the cylinder employing the same clamping and adjusting means as previously described.
  • the numerals which are applied to the second assembly and its clamping and adjusting means will be the same with addition of subscript a.
  • the jaw assembly 20a operated by sleeve 23a and shaft 33a is extended, for access of the controls, to the opposite end of the cylinder by means of extension sleeve 100 and an extension shaft 101, the sleeves and shafts being ocupled together by interengaged keys indicated diagrammatically at 102, 103.
  • the key surfaces are held in engagement by a dowel 104 which is secued to the connected members by means of cross pins 105, 106.
  • connecting means is the control for the jaw assembly 20a brought out to the right-hand end of the cylinder where the sleeve 100 is connected to the sleeve 41a by means of keyed surfaces 43a and where the shaft 101 is connected to the shaft extension 42a by keyed surfaces 44a, the keyed surfaces being held to gether by the clamping screw 45a.
  • the present plate cylinder assembly is not limited to plates of standard width and is capable of accommodating, with equal efficiency, plates of nonstandard, greater width.
  • I provide, between the main jaw assemblies, 20, 20a (FIG. 5) an auxiiary jaw assembly formed of a pair of jaws of relatively narrow axial extent, the auxiliary jaw assembly being mounted in the same bore within the cylinder coaxially with respect tolthe adjacent jaw assemblies and with the auxiliary jaws having alternative keyed connections with corresponding ones ofthe jaws in the adjacent assemblies.
  • This permits the auxiliary jaw assembly upon being slid endwise in the recess, to engage and augment a selected one of the adjacent assemblies for accommodation therein of plates of greater width.
  • the auxiliary jaw assembly 110 interposed between the jaw assemblies 20, 20a has an auxiliary tensioning jaw. 111 secrued to an auxiliary sleeve 112 which is of the same diameter as the adjacent sleeves 23, 23a.
  • the assembly also includes an auxiliary clamping jaw 113 secured to a member 114 which is analogous to a shaft and which is supported for rotation upon .a dowel 115 which bridges the shafts 33, 33a. It is one of the advantages of the construction that the auxiliary sleeve 11.2 and the auxiliary -shaft 114 have alternative keyed connections with a selected one of the-adjacent sleeves and shafts.
  • the auxiliary sleeve is provided with an axially extending pin 120 having alternatively engageable openings 121, 122 in the main sleeves.
  • the member 114 which supports the clamping jaw, has a pin 125, with altematively engageable openings 126, 127 in the main shafts. Accordingly, when the auxiliary jaw assembly 110 is slid to the left as viewed in FIG. 5 the auxiliary jaw assembly engages the left-hand jaw assembly 20 so that the clamping jaws of the latter are effectively elongated for handling plates of greater width. Conversely, sliding the auxiliary jaw assembly 110 to the right causes the jaws thereof to augment, and serve as an elongation of, the jaws in the assembly 20a, in which case the latter jaws will be capable of accommodating plates of greater width.
  • the collar screw 74 associated with the stop member 63 is loosened and the stop member is rotated so as to interpose a selected one of the stop surfaces 64, in the path of movement of the stop screw.
  • the jack screw 55 is then turned to bring the stop screw into bottoming engagement which positions the end of the plate in a position of nominal register.
  • the stop member 63 is then rotated back into the position illustrated in FIG. 6 in which the relief 66 is opposite the stop screw to permit subsequent touch-up adjustment. Following this the axial registration screw is turned to its position of nominal register.
  • the plate is then conformed to the surface of the cylinder and the inwardly bent, opposite end of the plate is interposed between the clamping jaw with the registering notch engaged with the registering pin, following which the clamping screw 51 at such end of the plate is turned tight.
  • the associated axial registration screw 80 is turned to its nominal position following which the associated jack screw 55 is turned tight.
  • the other plates on the cylinder are mounted and set in a condition of nominal register using the same procedure, following which the cylinder is allowed to print a web with slow rotation to check the precision of register. Whatever touch-up adjustment may be required may be brought about by manipulating the jack screws 55 at the ends of the plates to achieve peripheral adjustment and by moving the axial registration screws 80 a small amount in one direction or the other to achieve precise v axial register.
  • the jaw assemblies which secure adjacent plate ends are snugly nested within the conforming recess with substantially no lost space so that, for a given dimension of jaw assembly, required because of considerations of strength, the integrity of the cylinder body is affected to a minimum degree.
  • the cylinder preserves a high degree of rigidity and may be operated without risk at the highest available press speeds.
  • the individual mechanical parts of which the structure is composed may be simply and inexpensively machined and are inherently strong, requiring a minimum of maintenance during the life of the press.
  • a plate locking device for clamping flexible printing plates on a plate cylinder of a rotary printing press, the combination comprising a first jaw member formed of a hollow cylindrical sleeve and radially projecting jaw extending therealong, the sleeve having a longitudinal clearance slot extending adjacent to the jaw, a second jaw member having a shaft and a radially projecting jaw extending therealong, the shaft of the second jaw member being snugly telescoped into the sleeve and with the jaw thereof extending through the clearance slot to form a jaw assembly in which the jaws are relatively swingable toward one another about a central axis for reception of the bent-over end of a printing plate, means at the adjacent ends of the jaw members for imparting relative rocking movement to apply clamping pressure between the jaws so as to positively grip the end of the plate, the sleeve being telescoped into an undercut cylindrical groove formed in the surface of the cylinder, and means for rocking the jaw assembly as a unit with respect to the cylinder thereby to tension and peripherally
  • a plate locking device for clamping flexible printing plates on a plate cylinder of a rotary printing press comprising a first jaw member formed of a hollow cylindrical sleeve and radially projecting jaw extending therealong, the sleeve having a longitudinal clearance slot extending adjacent to the jaw, a second jaw member having a shaft and a radially projecting jaw extending therealong, the' shaft of the second jaw member being snugly telescoped into the sleeve and with the jaw thereof extending through the clear ance slot to form a jaw assembly in which the jaws are relatively swingable toward one another about a central axis for reception of the bent-over end of a printing plate, a collar secured to the end of the sleeve, a shaft nally extending clearance slot running adjacent thereto as well as a shaft telescoped within the sleeve and having a longitudinally extending jaw extending through the clearance slot so that the jaws are relatively swingable toward one another about a central axis, the jaws
  • a plate locking device for clamping flexible printing plates on a plate cylinder of a rotary printing press, the combination comprising a clamping jaw member having a shaft and radially projecting jaw extending therealong, a tensioning jaw member formed of extension secured to the end of the shaft and extending through the collar, the collar having an eccentric clamping screw and the shaft extension having an arm formed thereon engaged by the screw so that when the screw is turned the sleeve and shaft are rocked relative.
  • each of the assemblies consisting of a sleeve 1 having a longitudinally extending jaw and longitudia hollow cylindrical sleeve and having a radially projecting jaw extending therealong, the sleeve having a longitudinal clearance slot extending adjacent to the jaw, the clamping jaw member being telescoped within the sleeve with the jaw thereon extending through the clearance slot to form a jaw assembly in which the jaws are relatively swingable toward one another about a central axis for reception of the bent-over end of a printing plate, the sleeve having means'at its end in the form of an eccentrically mounted clamping
  • a rotatable stop member is provided on the cylinder having a plurality of stop surfaces thereon, the stop member being movable so as to selectively interpose one of the stop surfaces in the path of movement of the stop on the sleeve.
  • a plate locking device for clamping flexible printing plates on a plate cylinder of a rotary printing press comprising, a clamping jaw member formed of a shaft having a radially projecting jaw extending therealong, a tensioning jaw member in the form of a hollow cylindrical sleeve having a radially projecting jaw extending therealong and with a longitu- 9 dinal clearance slot extending adjacent to such jaw, the shaft being telescoped into the sleeve with its jaw extending through the clearance slot to form a jaw assembly in which the jaws are relatively swingable toward one another about a central axis for reception of the bent-over end of a printing plate, an auxiliary clamping jaw member having aradially projecting auxiliary jaw of narrow axial width, an auxiliary tensioning jaw member having a radially projecting auxiliary jaw of corresponding width, the auxiliary jaw members being coaxial with respect to the clamping and tensioning jaw members and having respective axially engageable keyed connections therewith so as to permit the jaws to
  • a plate cylinder assembly for a printing press comprising, in combination, a cylinder, first and second jaw assemblies, each of the assemblies consisting of a sleeve having a longitudinally extending jaw and longitudinally extending clearance slot running adjacent thereto, as well as a shaft telescoped within the sleeve and having a longitudinally extending jaw extending through the clearance slot so that the jaws are relatively swingable toward one another about a central axis, the jaws being tapered and spade-like presenting opposed flat faces to provide extensive face-to-face engagement with the bent'over end portion of a flexible printing plate, the jaw assemblies being spaced side by side in an undercut axially-extending recess formed in the clyinder and in mirror image to one another for respectively engaging a plate leading edge and a plate trailing edge, means at the end of the cylinder for clamping the opposed jaws together and for adjusting each jaw assembly rockably and axially with respect to the cylinder, the recess in the cylinder having a cross section in the form
  • a plate cylinder assembly for a printing press comprising, in combination, a cylinder, first and second jaw assemblies, each of the assemblies consisting of a sleeve having a longitudinally extending jaw and longitudinally extending clearance slot running adjacent thereto as well as a shaft telescoped within the sleeve and having a longitudinally extending jaw extending through the clearance slot so that the jaws are relatively swingable toward one another about a central axis, the jaws being tapered and spade-like presenting opposed flat faces to provide extensive face-to-face engagement with the bent-over end portion of a flexible printing plate, the jaw assemblies being mounted side by side in an undercut axially extending recess formed in the cylinder and in mirror image to one another for respectively engaging a plate leading edge and a plate trailing edge, means at the end of the cylinder for clamping the opposed jaws together and for adjusting each jaw assembly rockably with respect to the cylinder, the recess in the cylinder having a cross section which is generally triangular communicating with symmetrically
  • the stop member is in the form of an axially oriented member having symmetrically faceted stop surfaces and which is rotatable to present facets of different radius to limit the rocking movement of each of the sleeves.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US00354960A 1972-04-27 1973-04-27 Flexible printing plate locking device for rotary printing press Expired - Lifetime US3824928A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2220652A DE2220652C3 (de) 1972-04-27 1972-04-27 Vorrichtung zum Befestigen von Druckplatten auf dem Plattenzylinder einer Rotationsdruckmaschine

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DE (1) DE2220652C3 (fr)
FR (1) FR2182115B1 (fr)
GB (1) GB1435321A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100854A (en) * 1974-08-28 1978-07-18 Japan Society For Promotion Of Machine Industry Device for mounting resin plate onto plate cylinder
US4191106A (en) * 1975-12-01 1980-03-04 K and Manufacturing Company, Inc. Printing plate clamping assembly
US4357868A (en) * 1981-02-12 1982-11-09 Monarch Marking Systems, Inc. Print wheel and method of making same
US4546702A (en) * 1983-04-28 1985-10-15 Albert-Frankenthal Ag Apparatus for holding printing plates on the cylinder of a printing press
US4587901A (en) * 1983-07-29 1986-05-13 Officine Meccaniche G. Cerutti S.P.A. Plate holding roller particularly for flexographic printing applications
US4802413A (en) * 1986-07-11 1989-02-07 Hercules Incorporated Printing plate securing
US4938135A (en) * 1987-09-21 1990-07-03 Koenig & Bauer Aktiengesellschaft Plate clamping assembly
EP0739727A2 (fr) * 1995-04-29 1996-10-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour tendre le bord arrière d'une plaque d'impression dans une machine d'impression rotative
US6237491B1 (en) * 1998-09-21 2001-05-29 Ryobi Ltd. Apparatus for positioning a printing plate to a plate cylinder of a printing machine
US6263794B1 (en) * 1998-07-06 2001-07-24 Heidelberger Druckmaschinen Aktiengesellschaft Gripper for a sheet-transporting cylinder or drum of a rotary printing press
US6520085B1 (en) 1998-11-26 2003-02-18 Heidelberger Druckmaschinen Ag Device for tensioning a cylinder dressing on a printing machine-cylinder
US20050145130A1 (en) * 1999-12-02 2005-07-07 Helmut Holm Printing group of a rotary printing press
US20070068405A1 (en) * 2001-10-05 2007-03-29 Masuch Bernd K Printing unit and a rotary roller printing press
US20080089712A1 (en) * 2006-10-16 2008-04-17 Fuji Xerox Co., Ltd. Image forming apparatus and process cartridge
US20080282919A1 (en) * 2004-05-10 2008-11-20 Wolfgang Dennstedt Clamping Device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345369A1 (de) * 1983-12-15 1985-06-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Einrichtung zur befestigung einer druckplatte am plattenzylinder einer druckmaschine
DE10228968B3 (de) * 2002-06-26 2004-01-29 Koenig & Bauer Ag Zylinderpaar eines Druckwerks einer Rotationsdruckmaschine
DE8909554U1 (de) * 1989-08-09 1989-10-05 J. F. Nold GmbH & Co KG, 6081 Stockstadt Ablauf-Sieb
DE10228970C1 (de) * 2002-06-26 2003-11-13 Koenig & Bauer Ag Zylinder eines Druckwerks einer Rotationsdruckmaschine
DE4244279C2 (de) * 1992-12-28 1995-05-18 Heidelberger Druckmasch Ag Druckformkorrektureinrichtung zum Ausgleich von Druckträgerdehnungen
DE102005008982B3 (de) * 2005-02-28 2006-03-02 Koenig & Bauer Ag Vorrichtungen zum registerhaltigen Ausrichten zumindest einer Druckplatte auf einem Plattenzylinder
DE102007024426A1 (de) * 2007-05-25 2008-12-04 Maschinenfabrik Wifag Spanneinrichtung für Druckformen
EP2047993B1 (fr) * 2007-10-10 2012-07-18 WIFAG Maschinenfabrik AG Cylindre d'impression supportant par friction un dispositif de registre

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US629932A (en) * 1898-12-10 1899-08-01 Robert Hoe Sheet holding and straining device.
US1957880A (en) * 1932-02-25 1934-05-08 Goss Printing Press Co Ltd Folding mechanism
US2857841A (en) * 1953-03-09 1958-10-28 Hoe & Co R Printing plate clamping mechanism
US3335663A (en) * 1964-08-12 1967-08-15 Miehle Goss Dexter Inc Plate lockup for reversible plate cylinder
US3605621A (en) * 1969-05-08 1971-09-20 Wood Industries Inc Printing cylinder for holding flexible plates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US629932A (en) * 1898-12-10 1899-08-01 Robert Hoe Sheet holding and straining device.
US1957880A (en) * 1932-02-25 1934-05-08 Goss Printing Press Co Ltd Folding mechanism
US2857841A (en) * 1953-03-09 1958-10-28 Hoe & Co R Printing plate clamping mechanism
US3335663A (en) * 1964-08-12 1967-08-15 Miehle Goss Dexter Inc Plate lockup for reversible plate cylinder
US3605621A (en) * 1969-05-08 1971-09-20 Wood Industries Inc Printing cylinder for holding flexible plates

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100854A (en) * 1974-08-28 1978-07-18 Japan Society For Promotion Of Machine Industry Device for mounting resin plate onto plate cylinder
US4191106A (en) * 1975-12-01 1980-03-04 K and Manufacturing Company, Inc. Printing plate clamping assembly
US4357868A (en) * 1981-02-12 1982-11-09 Monarch Marking Systems, Inc. Print wheel and method of making same
US4546702A (en) * 1983-04-28 1985-10-15 Albert-Frankenthal Ag Apparatus for holding printing plates on the cylinder of a printing press
US4587901A (en) * 1983-07-29 1986-05-13 Officine Meccaniche G. Cerutti S.P.A. Plate holding roller particularly for flexographic printing applications
US4802413A (en) * 1986-07-11 1989-02-07 Hercules Incorporated Printing plate securing
US4938135A (en) * 1987-09-21 1990-07-03 Koenig & Bauer Aktiengesellschaft Plate clamping assembly
EP0739727A2 (fr) * 1995-04-29 1996-10-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour tendre le bord arrière d'une plaque d'impression dans une machine d'impression rotative
EP0739727A3 (fr) * 1995-04-29 1997-03-12 Heidelberger Druckmasch Ag Dispositif pour tendre le bord arrière d'une plaque d'impression dans une machine d'impression rotative
US6263794B1 (en) * 1998-07-06 2001-07-24 Heidelberger Druckmaschinen Aktiengesellschaft Gripper for a sheet-transporting cylinder or drum of a rotary printing press
US6237491B1 (en) * 1998-09-21 2001-05-29 Ryobi Ltd. Apparatus for positioning a printing plate to a plate cylinder of a printing machine
US6520085B1 (en) 1998-11-26 2003-02-18 Heidelberger Druckmaschinen Ag Device for tensioning a cylinder dressing on a printing machine-cylinder
US6920824B2 (en) * 1999-12-02 2005-07-26 Koenig & Bauer Aktiengesellschaft Printing group of a rotary printing press
US7246557B2 (en) 1999-12-02 2007-07-24 Koenig & Bauer Aktiengesellschaft Printing group of a rotary printing press
US20050145130A1 (en) * 1999-12-02 2005-07-07 Helmut Holm Printing group of a rotary printing press
US20060117974A1 (en) * 1999-12-02 2006-06-08 Helmut Holm Printing group of a rotary printing press
US7066090B2 (en) 1999-12-02 2006-06-27 Koenig & Bauer Aktiengesellschaft Printing group of a rotary printing press
US7523703B2 (en) 1999-12-02 2009-04-28 Koenig & Bauer Aktiengesellschaft Printing group of a rotary printing press
US20050145129A1 (en) * 1999-12-02 2005-07-07 Helmut Holm Printing group of a rotary printing press
US20070169645A1 (en) * 2001-10-05 2007-07-26 Masuch Bernd K Printing unit and a rotary roller printing press
US20070095226A1 (en) * 2001-10-05 2007-05-03 Herbert Burkard O Rotary roller printing press
US20070084363A1 (en) * 2001-10-05 2007-04-19 Masuch Bernd K Printing unit and a rotary roller printing press
US7296516B2 (en) 2001-10-05 2007-11-20 Koenig & Bauer Aktiengesellschaft Rotary roller printing press
US7448320B2 (en) 2001-10-05 2008-11-11 Koenig & Bauer Aktiengesellschaft Printing unit and a rotary roller printing press
US20070068405A1 (en) * 2001-10-05 2007-03-29 Masuch Bernd K Printing unit and a rotary roller printing press
US7546801B2 (en) 2001-10-05 2009-06-16 Koenig & Bauer Aktiengesellschaft Printing unit and a rotary roller printing press
US7562623B2 (en) 2001-10-05 2009-07-21 Koenig & Bauer Aktiengesellschaft Printing unit and a rotary roller printing press
US20080282919A1 (en) * 2004-05-10 2008-11-20 Wolfgang Dennstedt Clamping Device
US20080089712A1 (en) * 2006-10-16 2008-04-17 Fuji Xerox Co., Ltd. Image forming apparatus and process cartridge

Also Published As

Publication number Publication date
DE2220652A1 (de) 1973-11-08
DE2220652C3 (de) 1975-04-17
FR2182115B1 (fr) 1979-04-20
FR2182115A1 (fr) 1973-12-07
DE2220652B2 (de) 1974-08-15
GB1435321A (en) 1976-05-12

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