US3855927A - Ink fountain blade for printing presses - Google Patents

Ink fountain blade for printing presses Download PDF

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Publication number
US3855927A
US3855927A US00369154A US36915473A US3855927A US 3855927 A US3855927 A US 3855927A US 00369154 A US00369154 A US 00369154A US 36915473 A US36915473 A US 36915473A US 3855927 A US3855927 A US 3855927A
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US
United States
Prior art keywords
blade
fountain
ink
cam
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00369154A
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English (en)
Inventor
C Simeth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roland Offsetmaschinenfabrik Faber and Schleicher AG
Original Assignee
Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Application filed by Roland Offsetmaschinenfabrik Faber and Schleicher AG filed Critical Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Publication of US3855927A publication Critical patent/US3855927A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/12—Axially segmented ink blades

Definitions

  • ABSTRACT An ink fountain having a continuous blade member of hard stiff metal with the edge thereof having a set of parallel slots dividing the edge of the blade into adjacent sections corresponding to printing zones. Cooperating with each of the sections is a cam for adjusting the clearance of the edge of the blade with the fountain roller thereby to determine the thickness of ink film in the zone, the cams being captively adjusted by means of respective adjusting screws.
  • the continuous blade member is of a thickness greater than that em- I ployed in conventional fountains, and the slots which define the sections are fully occupied by elastic rubber-like material which is bonded to the edges of the slots and which accommodates differential adjustment of adjacent sections so that each section may be adjusted independently.
  • the blade member has, bonded to it, a thin cover plate which extends slightly beyond the edge of the blade member for cooperation with the surface of the cylinder. Also in the preferred embodiment a force trans mitting member is secured to the underside of each of the blade sections to reinforce the section and to act as a cam follower for the adjusting cam.
  • FIG. 1 is a fragmentary transverse section taken through an ink fountain constructed in accordance with the present invention.
  • FIG. 2 is a fragmentary end view of the fountain blade in FIG. 1 looking along the line 22 in that figure.
  • FIG 3 is a fragmentary underside view of the fountain blade looking along the line 33 in FIG. 1.
  • FIG. 4 is a fragmentary section taken along the line 44 in FIG. 2.
  • FIG. 6 is a fragmentary plan view showing a section of blade which constitutes a simplified form of the present invention.
  • FIG 1 there is shown the pertinent portions of an ink fountain which includes a frame 11 defining a trough which carries a body of ink (not shown).
  • a smoothly surfaced fountain roller 12 Extending along the frame of the fountain in the direction of the roller axis is a ledge 13 and an adjacent supporting surface 14.
  • a blade assembly 20 Secured to the ledge, and bearing against the supporting surface, is a blade assembly 20 having a continuous blade member 21.
  • the latter has a base, or mounting, portion 22 which is secured to the ledge 13 by a suitable mounting means such as a series of screws 23 so as to present an edge portion 24 in the direction of the fountain roller.
  • the presented edge of the blade member 24 is divided, by a set of parallel slots, into a series of individual cantilevered sections which have provision for individual adjustment toward and away from the fountain roller and with the slots being fully occupied by elastic rubber-like material which is bonded to the edges of the slots so as to provide continuous integrity of the blade member from end to end while accommodating differences in the adjustment of adjacent blade sections.
  • the blade member 21 has a series of slots 25 which extend inwardly of the blade member, and parallel to one another, defining bladesections 26, the slots being filled with elastic rubber-like material 27' which is indicated by the cross hatching.
  • each of the sections 26 has, secured to the underside of it, a force transmitting member 28.
  • the force transmitting members 28 are, as shown, preferably of rectangular shape, made of metal, and intimately bonded to the center of respective blade sections to serve as cam followers for individual section adjustment.
  • the members 28 serve to provide longitudinal rigidification of each blade section.
  • each is provided with an adjusting cam which is, in turn, positioned by an adjusting screw, a typical cam and cooperating adjusting screw being illustrated in FIG. 1.
  • the cam, indicated at 30, is in the fomi of a lever pivoted at 31 having a downwardly extending arm 32 and a cam surface 33.
  • the downwardly extending arm 32 terminates in a fork 34 which registers with an annular groove 35 formed in the tip of an adjusting screw 36.
  • the adjusting screw is threaded into the frame as indicated at 37 and may be rotated by turning a knob 38'at its outer end. Because of the length of the lever arm 32 and the shape and position of the cam surface a high degree of mechanical advantage is obtained permitting an exceedingly fine adjustment.
  • the blade member is formed of hard and stiff metal, preferably steel, in a thickness which substantially exceeds the thickness of conventional fountain blades so that a large restoring force is available to keep the blade section, via its force transmitting member 28, firmly bottomed on the cam surface 33 over the useful range of cam adjustment.
  • the present fountain blade construction is distinguished by a thickness which exceeds that of normal fountain blades, with an accompanying high degree of stiffness, there is a high degree of sensitivity of adjustment and close following of the adjusting screw in both of its directions of rotation.
  • the tip of the blade which engages the fountain roller is positively supported so that the film thickness remains constant in spite of the changes in hydrodynamic pressure which may be exerted by the ink fountain blade incident to changes in the speed of the fountain roller.
  • elastic rubber-like material is provided not only, as shown at 27, in the slots 25, but also in the spaces between adjacent force transmitting members 28.
  • This material, indicated at 29, is preferably integral with the material 27 in the respective slots, being bonded not only to the opposed faces of the force transmitting members 28 but also to the underside of the adjacent blade sections. The effect is to support and reinforce thematerial which is in the slots so that the latter is better able to resist the shearing forces which are developed when the adjacent blade sections are adjusted differently from one another.
  • the presence of the elastic material 27, 29 in the slots and gaps precludes any pockets where ink residue might collect so that all exposed surfaces are smooth and easily cleaned.
  • a thin continuous cover plate is bonded to the blade member 21 along its entire length, projecting beyond the blade member in the region of its edge to cooperate with the fountain roller.
  • the cover plate which is indicated at 40, has a thickness which is only a small fraction of the thickness of the continuous blade member 21, indeed, a thickness which is preferably much less than that of conventional fountain blades so as to permit localized fiexure to accommodate changes in the relative adjust ment of adjacent blade sections 26.
  • the cover plate 40 provides a continuous and unbroken edge for cooperating with the continuous surface of the fountain roller, although, if desired, the cover plate may be formed into sections which cooperate with the individual sections 26, and with any slot or space being occupied by the elastic rubber-like material.
  • the material which fills the slots and spans the space between the cam followers should have characteristics which are normally associated with rubber except, however, that one of the well known synthetic rubbers should be used which is impervious to the effect of the oily components in the ink.
  • the material should be one which permits tight and permanent attachment to all of the engaged surfaces. Where rubber is used it may be doctored into the spaces in the plastic state with subsequent application of heat for vulcanization. In lieu of rubber any plastic may be used having resilient characteristics similar to rubber and capable of permanent adherance to the engaged surfaces. If desired the elastic material, instead of being directly adherent to the engaged surfaces, may be secured thereto by a strong compatible cement.
  • the present invention while discussed in connection with an overshot type of fountain is not limited thereto and may be used with fountains of the undershot type.
  • the device includes a manual knob for adjustment of each of the blade sections
  • the invention is not limited to manual control. Indeed, because of the close following of the blade position with turning of the adjusting screw in either direction, the blade and mechanism are particularly suited to remote automatic driving and positioning.
  • the invention has been discussed in connection with the preferred embodiment illustrated in FIGS. 1-5, but it will, however, be understood that the invention may be utilized, in its simplest aspect, as shown in FIG. 6 without a cover plate and with the presented edges of the blade sections bearing directly against the fountain roller.
  • corresponding elements are indicated by corresponding reference numerals with the addition of subscript a.
  • the blade member, indicated at 210 has notches 25a which define blade sections 26a which register with zones on the printed product, for example, column positions.
  • the notches are fully occupied by elastic rubber-like material 27a securely bonded to the edges of the slots by vulcanizing or the like, the material being sufficiently flexible and the notches sufficiently wideso as to provide substantially independent movement of each section for determining the thickness of ink film.
  • the adjusting means for example a cam member 30, may bear directly against the underside of each section or, if desired, the sections may be reinforced by force transmitting members, such as indicated at 28 in the prior embodiment, secured to, and centered upon, the underside of each of the blade sections.
  • cam 30 in the shape of a lever as illustrated in FIG. 1, but it will be understood that the invention in certain of its aspects is not limited to this particular cam configuration and that other cam shapes may be used; indeed, the tem cam will be understood to be used in a general sense as a member which is adjustably capable of crowding against the individual blade section for the purpose of changing the thickness of the ink film.
  • bonding as used herein is used in the gen-' eral sense of attachment and any mode of fastening may be used. I prefer, however, to employ a thin layer of vulcanized rubber or a thin layer of strong and durable cement in lieu of direct metallic contact, thereby avoiding any necessity for relatively expensive operations such as welding, brazing or the like.
  • a composite ink fountain blade for cooperation with a form roller of a printing press to control the thickness of ink film in each of a plurality of zones along the length of the blade
  • a continuous blade member formed of hard stiff metal in relatively thick section, such blade member having a set of parallel slots formed in the edge thereof and dividing the edge of the blade into adjacent sections corresponding to said zones,-a thin continuous cover plate superimposed upon the blade member and having a fraction of the thickness of the blade member, the cover plate projecting slightly beyond the edge of the blade member for engagement with the fountain roller, the cover plate being bonded to the blade member and the slots being fully occupied by an elastic rubber-like material bonded to the edges'of the slots and bonded to the cover plate to form a composite blade having smoothly continuous external surfaces free of recesses in which dried ink might collect while permitting movement of each section of the blade member substantially independently of the adjacent sections accompanied by movement and flexing of the thin cover plate, and means including an independently adjustable cam for engaging the underside of each of
  • an ink fountain for a printing press, the combination comprising a frame containing a body of ink, a fountain roller rotatably mounted in the frame, a ledge on the frame extending along the fountain roller, a fountain blade secured to the ledge, said fountain blade including a continuous blade member formed of hard stiff metal having a set of parallel slots formed in the presented edge thereof and dividing the edge of the blade into adjacent sections, means including a cam and an adjusting screw coupled thereto for adjusting each of the sections with respect to the fountain roller thereby to determine the thickness of film in successive zones along the length of the fountain roller, a force transmitting member in the form of a generally rectangular block of metal centrally secured to the underside of each section and presenting a cam follower surface engaged by the cam, and elastic rubber-like material fully occupying the slots in the blade and the spaces between the force transmitting members and intimately bonded thereto to provide smoothly continuous external surfaces free of recesses in which driedink might collect, the elastic material being sufficiently resilient as to permit relative broadwise movement of adjacent sections
  • an ink fountain for a printing press the combination comprising a frame containing a body of ink, a fountain roller rotatably mounted in the frame, a ledge on the frame extending along the fountain roller, a fountain blade secured to the ledge, said fountain blade including a continuous blade member formed of hard stiff metal having a set of parallel slots formed in the presented edge thereof and dividing the edge of the blade into adjacent sections, each of the sections having bonded to its underside a rigid force transmitting vmember in'the form of a generally rectangular block of metal which is in centered position parallel to the slots so as to form a cam follower surface for independent adjustment of the blade section while providing longi-- tudinal reinforcement thereof, means including a cam bearing against the cam follower surface and having an adjusting screw coupled thereto for positively adjusting the position of the section in both directions with respect to the surface of the fountain roller, and elastic rubber-like material fully'occupying the slots in the blade and smoothly bridging the spaces between the force transmitting members and intimately bonded thereto to to
  • an ink fountain for a printing press, the combination comprising a frame containing a body of ink, a fountain roller rotatably mounted in the frame, a ledge onthe frame extending along the fountain roller; a fountain blade secured to the ledge, said fountain blade including a continuous blade member formed of hard stiff metal having a set of parallel slots formed in the presented edge thereof for dividing the edge of the blade into adjacent sections, a-vertically arranged adjusting lever alined with each section, the lever being pinned at its upper end to the frame to provide a fixed fulcrum having a closely adjacent cam surface bearing against the underside of the associated section, an adjusting screw threaded in the frame substantially persmoothly continuous lateral blade surfaces free of recesses in which dried ink might collect, the slots being sufficiently wide and the elastic material being sufficiently resilient as to permit relative broadwise movement of each section substantially independently of the adjacent sections, the thickness of the blade member being sufficiently great so as to develop a high value of restoring force to keep each blade section solidly seated on its

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
US00369154A 1972-06-13 1973-06-12 Ink fountain blade for printing presses Expired - Lifetime US3855927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2228625A DE2228625B2 (de) 1972-06-13 1972-06-13 Farbkasten für Druckmaschinen

Publications (1)

Publication Number Publication Date
US3855927A true US3855927A (en) 1974-12-24

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US00369154A Expired - Lifetime US3855927A (en) 1972-06-13 1973-06-12 Ink fountain blade for printing presses

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US (1) US3855927A (US20020051482A1-20020502-M00012.png)
CH (1) CH553062A (US20020051482A1-20020502-M00012.png)
DE (1) DE2228625B2 (US20020051482A1-20020502-M00012.png)
FR (1) FR2187550B1 (US20020051482A1-20020502-M00012.png)
GB (1) GB1394510A (US20020051482A1-20020502-M00012.png)
IT (1) IT989114B (US20020051482A1-20020502-M00012.png)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978788A (en) * 1975-05-16 1976-09-07 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Ink metering assembly for printing press
US4000694A (en) * 1974-06-26 1977-01-04 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Ink fountain in an inking system for printing presses
US4026210A (en) * 1975-04-24 1977-05-31 Rotobind Ltd. Printing apparatus and method
US4084510A (en) * 1975-08-25 1978-04-18 Addressograph-Multigraph Corporation Ink fountain
US4169425A (en) * 1975-12-11 1979-10-02 J. M. Voith Gmbh Apparatus for removing the surplus of coating compound in paper coating machines
US4170177A (en) * 1977-04-07 1979-10-09 Toshiba Kikai Kabushiki Kaisha Printing machine inking device with plurality of cam levers
US4453467A (en) * 1980-05-16 1984-06-12 Heidelberger Druckmaschinen Ag Ink metering device in an ink duct for offset or letterpress printing machines
US4485738A (en) * 1981-12-14 1984-12-04 Maschinenfabrik Wifag Metering blade for zonally metering a liquid film
US4495864A (en) * 1982-02-03 1985-01-29 Heidelberger Druckmaschinen Ag Ink knife and adjusting device therefor on an ink duct of a rotary printing machine
US4502386A (en) * 1982-05-13 1985-03-05 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Ink fountain having temperature responsive element
US4502387A (en) * 1982-10-23 1985-03-05 Heidelberger Druckmaschinen Ag Device for zone-wise metering of ink on an ink duct roller of an inking unit for printing presses
US4676160A (en) * 1985-07-18 1987-06-30 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Doctor blade for use in an inker of a printing machine
JPS6325535U (US20020051482A1-20020502-M00012.png) * 1986-08-04 1988-02-19
US4757782A (en) * 1985-08-07 1988-07-19 Valmet Oy Apparatus for coating a web
US4773327A (en) * 1987-04-09 1988-09-27 Am International Ink metering blade
US4864930A (en) * 1985-05-09 1989-09-12 Graphics Microsystems, Inc. Ink control system
US4895071A (en) * 1986-04-14 1990-01-23 Benton Graphics, Inc. Unitary doctor blade assembly
US5052298A (en) * 1985-05-09 1991-10-01 Graphics Microsystems Ink control system
US5279223A (en) * 1991-06-28 1994-01-18 Kabushiki Kaisha Tokyo Kikai Seisakusho Ink feed adjusting apparatus for use in ink supply equipment
US5524540A (en) * 1994-12-15 1996-06-11 Van Denend; Mark E. Printing press having doctor blade with integral tape seal thereon
US5605573A (en) * 1992-03-19 1997-02-25 Valmet Corporation Holder for a cradle of a coating bar or for a coating blade
US5778785A (en) * 1995-10-26 1998-07-14 Heidelberger Druckmaschinen Ag Zonal ink fountain blade for a rotary printing press
US20030226579A1 (en) * 2002-06-06 2003-12-11 Carrier Gordon Eugene Serrated doctor blades
US8474378B1 (en) * 2010-02-23 2013-07-02 Valley Holdings, Llc Chamber blade/sealing assembly for a printing press

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD153476A3 (de) * 1980-04-10 1982-01-13 Hans Johne Verschmutzungsschutz an farbkaesten von druckmaschinen
DE3024453C1 (de) * 1980-06-28 1981-12-24 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbkasten im Farbwerken von Druckmaschinen
DD209777A1 (de) * 1982-09-21 1984-05-23 Arndt Jentzsch Farbdosiereinrichtung
JPS59230748A (ja) * 1983-06-13 1984-12-25 凸版印刷株式会社 化粧シ−ト
DE3844138A1 (de) * 1988-12-28 1990-08-02 Wifag Maschf Dosiermesser zum zonenweisen dosieren eines farbfilms

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805100A (en) * 1904-05-13 1905-11-21 Hugh Silver Machine for graining lumber.
US980454A (en) * 1909-12-16 1911-01-03 John Thomson Press Company Printing-press.
US1759889A (en) * 1929-05-31 1930-05-27 Harry W Clark Inking fountain
US1862744A (en) * 1929-08-31 1932-06-14 Goss Printing Press Co Ltd Inking mechanism
US2283830A (en) * 1941-01-22 1942-05-19 Goss Printing Press Co Ltd Inking mechanism
US2445135A (en) * 1944-12-18 1948-07-13 Scott Paper Co Doctor holder
US2837024A (en) * 1955-04-07 1958-06-03 John Waldron Corp Ink fountain blade
US3356067A (en) * 1966-09-14 1967-12-05 Lodding Engineering Corp Doctor blades having relieved ends
US3424084A (en) * 1965-06-18 1969-01-28 Mach Speciales Sa Soc D Et Wet-offset rotary presses
US3696743A (en) * 1969-06-11 1972-10-10 Planeta Veb Druckmasch Werke Apparatus for regulating a color dosing device in relation to a color doctor roller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583639A (en) * 1948-05-22 1952-01-29 Time Inc Rotary ductor for printing presses

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805100A (en) * 1904-05-13 1905-11-21 Hugh Silver Machine for graining lumber.
US980454A (en) * 1909-12-16 1911-01-03 John Thomson Press Company Printing-press.
US1759889A (en) * 1929-05-31 1930-05-27 Harry W Clark Inking fountain
US1862744A (en) * 1929-08-31 1932-06-14 Goss Printing Press Co Ltd Inking mechanism
US2283830A (en) * 1941-01-22 1942-05-19 Goss Printing Press Co Ltd Inking mechanism
US2445135A (en) * 1944-12-18 1948-07-13 Scott Paper Co Doctor holder
US2837024A (en) * 1955-04-07 1958-06-03 John Waldron Corp Ink fountain blade
US3424084A (en) * 1965-06-18 1969-01-28 Mach Speciales Sa Soc D Et Wet-offset rotary presses
US3356067A (en) * 1966-09-14 1967-12-05 Lodding Engineering Corp Doctor blades having relieved ends
US3696743A (en) * 1969-06-11 1972-10-10 Planeta Veb Druckmasch Werke Apparatus for regulating a color dosing device in relation to a color doctor roller

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000694A (en) * 1974-06-26 1977-01-04 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Ink fountain in an inking system for printing presses
US4026210A (en) * 1975-04-24 1977-05-31 Rotobind Ltd. Printing apparatus and method
US3978788A (en) * 1975-05-16 1976-09-07 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Ink metering assembly for printing press
US4084510A (en) * 1975-08-25 1978-04-18 Addressograph-Multigraph Corporation Ink fountain
US4169425A (en) * 1975-12-11 1979-10-02 J. M. Voith Gmbh Apparatus for removing the surplus of coating compound in paper coating machines
US4170177A (en) * 1977-04-07 1979-10-09 Toshiba Kikai Kabushiki Kaisha Printing machine inking device with plurality of cam levers
US4453467A (en) * 1980-05-16 1984-06-12 Heidelberger Druckmaschinen Ag Ink metering device in an ink duct for offset or letterpress printing machines
US4485738A (en) * 1981-12-14 1984-12-04 Maschinenfabrik Wifag Metering blade for zonally metering a liquid film
US4495864A (en) * 1982-02-03 1985-01-29 Heidelberger Druckmaschinen Ag Ink knife and adjusting device therefor on an ink duct of a rotary printing machine
US4502386A (en) * 1982-05-13 1985-03-05 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Ink fountain having temperature responsive element
US4502387A (en) * 1982-10-23 1985-03-05 Heidelberger Druckmaschinen Ag Device for zone-wise metering of ink on an ink duct roller of an inking unit for printing presses
US5052298A (en) * 1985-05-09 1991-10-01 Graphics Microsystems Ink control system
US4864930A (en) * 1985-05-09 1989-09-12 Graphics Microsystems, Inc. Ink control system
US4676160A (en) * 1985-07-18 1987-06-30 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Doctor blade for use in an inker of a printing machine
US4757782A (en) * 1985-08-07 1988-07-19 Valmet Oy Apparatus for coating a web
US4895071A (en) * 1986-04-14 1990-01-23 Benton Graphics, Inc. Unitary doctor blade assembly
JPS6325535U (US20020051482A1-20020502-M00012.png) * 1986-08-04 1988-02-19
JPH059169Y2 (US20020051482A1-20020502-M00012.png) * 1986-08-04 1993-03-08
US4773327A (en) * 1987-04-09 1988-09-27 Am International Ink metering blade
US5279223A (en) * 1991-06-28 1994-01-18 Kabushiki Kaisha Tokyo Kikai Seisakusho Ink feed adjusting apparatus for use in ink supply equipment
US5605573A (en) * 1992-03-19 1997-02-25 Valmet Corporation Holder for a cradle of a coating bar or for a coating blade
US5524540A (en) * 1994-12-15 1996-06-11 Van Denend; Mark E. Printing press having doctor blade with integral tape seal thereon
US5778785A (en) * 1995-10-26 1998-07-14 Heidelberger Druckmaschinen Ag Zonal ink fountain blade for a rotary printing press
US20030226579A1 (en) * 2002-06-06 2003-12-11 Carrier Gordon Eugene Serrated doctor blades
US8474378B1 (en) * 2010-02-23 2013-07-02 Valley Holdings, Llc Chamber blade/sealing assembly for a printing press

Also Published As

Publication number Publication date
IT989114B (it) 1975-05-20
FR2187550B1 (US20020051482A1-20020502-M00012.png) 1979-06-15
DE2228625B2 (de) 1974-07-11
CH553062A (de) 1974-08-30
GB1394510A (en) 1975-05-14
DE2228625A1 (de) 1973-12-20
FR2187550A1 (US20020051482A1-20020502-M00012.png) 1974-01-18

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