US3877368A - Ink transfer roller for printing presses - Google Patents
Ink transfer roller for printing presses Download PDFInfo
- Publication number
- US3877368A US3877368A US313291A US31329172A US3877368A US 3877368 A US3877368 A US 3877368A US 313291 A US313291 A US 313291A US 31329172 A US31329172 A US 31329172A US 3877368 A US3877368 A US 3877368A
- Authority
- US
- United States
- Prior art keywords
- roller
- transfer
- fluid
- rollers
- contact
- 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
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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
- B41F31/26—Construction of inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
- B41N7/04—Shells for rollers of printing machines for damping rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments
Definitions
- ABSTRACT [52] U.S. Cl. 101/148; 101/348 A t fer roller for providing improved control over It. Cl. the application of and dampening to the Field of Search 101/147, printing cylinder of a lithographic printing press.
- 127, 128 consists of a flat band formed into an elongated helical shape and positioned in contact with inking and dampl l References Cited ening fluid form rollers to transfer controlled amounts UNITED STATES PATENTS of fluid therebetween.
- 127, 128 consists of a flat band formed into an elongated helical shape and positioned in contact with inking and dampl l References Cited ening fluid form rollers to transfer controlled amounts UNITED STATES PATENTS of fluid therebetween.
- the roller 2354981 3/1944 Barber v 101/350 wIll present less surface area to the form rollers and, 2,393,471 1/1946 Johnson... 29/121 H hence, excessive quantities of fluid transfer will be 2,404,159 7/1946 Barber 29/127 X avoided.
- the present invention relates generally to fluid handling apparatus for use in printing presses. More specifically, the present invention relates to a transfer roller for providing improved control over the application of ink and dampening fluid to the printing cylinder of a lithographic printing press.
- a printing plate containing images to be printed is wrapped around a printing or plate cylinder and utilized to print directly onto a sheet of paper or, alternatively, onto an offset cylinder which, in turn, transfers the images to the paper.
- the printing plate is provided with ink receptive areas to be reproduced and water or dampening fluid receptive areas not to be printed, and, in operation, the plate is first moistened by a system of dampening rollers and then inked by a system of inking rollers such that ink will be retained only on the ink receptive areas of the plate and be repelled from the dampening fluid receptive areas.
- this ink that accumulates on the dampening fluid form roller is not fresh ink, but rather is ink that has not been transferred to the paper. As such, it is likely to have paper impurities mixed in with it. These impurities accumulate on the dampening fluid form roller and eventually deposit back on the plate, and the result is blinding which is a loss of transfer of ink to the plate and a reduction in copy quality.
- the inking form roller similarly picks up nonuniform amounts of dampening fluid from the printing plate and this produces similar problems.
- the transfer roller in accordance with a preferred embodiment consists of a flat band wound into an elongated helical shape and positioned to contact the inking and dampening fluid form rollers and transfer fluid therebetween.
- the transfer roller By being formed as a helical band having a plurality of spaced windings, the transfer roller will present less surface area to the form rollers than conventional transfer rollers and thus transfer lesser amounts of fluid back and forth between the form rollers.
- structure is provided to permit the helical transfer roller to be longitudinally compressed or expanded. This will permit the operator to adjust the number of windings of the band that contact the form rollers and hence to adjust the surface area in contact with the form rollers. In this way, the rate or quantity of fluid transfer back and forth between the form rollers may be varied or adjusted to accommodate diverse operating condi tions and to maximize performance.
- FIG. 1 schematically illustrates a portion of a lithographic printing press employing a transfer roller in accordance with the present invention.
- FIGS. 2 and 3 illustrate a preferred embodiment of the transfer roller of the present invention in greater detail.
- FIG. 1 illustrates a lithographic printing press of generally conventional construction within which the transfer roller of the present invention may be employed.
- This press includes a printing or plate cylinder having a peripheral printing surface 11 containing the impressions to be transferred to a sheet of paper either directly or through an offset cylinder as is wellknown by those skilled in the art.
- Peripheral surface 11 is generally provided on a printing plate wrapped around cylinder 10, however, in some embodiments it may be formed directly on the surface of the cylinder itself and it should be understood that the terms printing cylinder or plate cylinder are intended to encompass both of these forms as well as other constructions.
- an inking system generally designated by reference number 12 and including a fountain roller 13 for receiving ink from a reservoir 14, an intermediate roller 16, and an inking form roller 17 in contact with the surface 11 of the plate cylinder 10.
- dampening fluid is also applied to the surface 11 of plate cylinder 10 through a dampening fluid roller system 18 including a fountain roller 19 for receiving fluid from a reservoir 21, an intermediate roller 22 and a dampening fluid form roller 23 also in contact with surface 11 of the plate cylinder.
- Roller systems 12 and 18 may be of conventional construction and may also be arranged in many other configurations as recognized by those skilled in the art.
- plate cylinder 10 rotates in, a counterclockwise direction as indicated by arrow 24 such that dampening fluid from form roller 23 will be applied to surface 11 in advance of the ink applied by form roller 17.
- dampening fluid it is first necessary that the dampening fluid be applied uniformly and evenly across the entire length of the plate cylinder 10. This is difficult to accomplish, however, because rotation of the plate cylinder against the form rollers not only causes fluid transfer to the plate cylinder but also results in ink being picked up by the dampening fluid form rollers 23 and dampening fluid being picked up by the inking form roller 17.
- FIGS. 2 and 3 A preferred embodiment of this transfer roller is illustrated in FIGS. 2 and 3.
- the transfer roller 26 consists of a flat band 27 of metal or metal having an attached resilient surface of rubber or the like formed into a helix of several spaced windings to define a generally cylindrical roller.
- the number of windings or the width of the band are not critical and can be varied within wide limits.
- the transfer roller surface consists of a plurality of spaced windings or zones rather than one continuous surface, there is less contact area between the transfer roller and the form rollers 17 and 23 than in the prior art, or, in other words, the duty cycle (i.e. the ratio of form roller surface area in contact with the transfer roller versus the total surface area of the form roller) is less than 1.
- the duty cycle i.e. the ratio of form roller surface area in contact with the transfer roller versus the total surface area of the form roller
- the transfer roller may be easily expanded and contracted to adjust the duty cycle for maximum performance.
- the roller In FIG. 2, the roller is shown in a substantially ex panded state such that there will be substantial spacing between the windings and hence fewer windings in contact with the surface of the form rollers 17 and 23. In this condition, therefore, the rate of fluid transfer will be quite low.
- FIGS. 2 and 3 Changing the duty cycle can readily be accomplished with a variety of control structures.
- One simple form is schematically shown in FIGS. 2 and 3 and consists of an axial screw 28 having end plates 29 attached thereto. By merely screwing the end plates back and forth along the screw.
- the roller 26 may be expanded or contracted within wide limits as desired to obtain the preferred duty cycle. In many cases, especially in systems wherein the transfer roller is not readily accessible, appropriate structure would be included to permit external pushbutton control of the duty cycle, however, as this can be accomplished in many ways, a detailed description of such a system is not believed to be necessary.
- a duty cycle of about 50% is usually effective to provide the right amount of fluid transfer.
- Transfer roller 26 is preferably driven in rotation by the action of the form rollers rotating against it although it could be independently driven if desired.
- the embodiment illustrated in FIGS. 2 and 3 is intended to be a preferred embodiment only and that the transfer roller could take many other forms.
- the helical band 27 could be wrapped around a conventional roller to provide it with increased support.
- roller26 could be a solid rubber roller having a helical groove cut in its surface.
- the roller could consist of a plurality of circular bands arranged in substantially parallel spaced relationship. In this type of embodiment, the circular bands could be mounted around a bellows-like structure capable of being expanded and contracted to vary the spacing between the bands and hence the duty cycle of the system.
- roller of the present invention could also be positioned in other locations along the train of rollers other than between the form rollers as well as in other types of fluid handling systems. Therefore, it should be understood that the present invention should be limited only as required by the scope of the following claims.
- a printing press including a printing cylinder having a peripheral printing surface, inking means including an inking form roller in contact with said printing surface for transferring ink thereto, dampening fluid means including a dampening fluid form roller in contact with said printing surface for transferring dampening fluid thereto, and transfer means positioned between said inking form roller and said dampening fluid form roller and having a contacting peripheral surface in contact with said form rollers for transferring ink and dampening fluid therebetween; the improvement comprising wherein said transfer means comprises a substantially flat metal helical band having a plurality of spaced windings arranged to form a generally cylindrical shaped roller, and means coupled to said helical band for expanding and contracting said helical band for, respectively, increasing and decreasing the spacing between the windings thereof to vary the area of contact between said transfer means and said form rollers for controlling the amount of fluid transfer between said form rollers.
- Fluid transfer apparatus comprising: a. first and second rollers having peripheral surfaces for carrying fluid; V
- a transfer roller in contact with the peripheral surfaces of said first and second rollers for transferring controlled amounts of fluid therebetween, said transfer roller comprising a substantially flat metal helical band having a plurality of spaced windings arranged to form a generally cylindrical shaped roller;
- c. means for selectively expanding and contracting said helical band for selectively increasing and decreasing the spacing between the windings thereof to vary the area of contact between said transfer roller and the peripheral surfaces of said first and second rollers for controlling the amount of fluid transfer therebetween.
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US313291A US3877368A (en) | 1972-12-08 | 1972-12-08 | Ink transfer roller for printing presses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US313291A US3877368A (en) | 1972-12-08 | 1972-12-08 | Ink transfer roller for printing presses |
Publications (1)
Publication Number | Publication Date |
---|---|
US3877368A true US3877368A (en) | 1975-04-15 |
Family
ID=23215146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US313291A Expired - Lifetime US3877368A (en) | 1972-12-08 | 1972-12-08 | Ink transfer roller for printing presses |
Country Status (1)
Country | Link |
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US (1) | US3877368A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3922523A (en) * | 1973-05-16 | 1975-11-25 | Sheldon Edward E | Apparatus for producing x-ray images as radiographs |
US4752145A (en) * | 1985-07-04 | 1988-06-21 | Siemens Aktiengesellschaft | Variable length paper guide for paper tractors in printer facilities |
EP0305784A2 (en) * | 1987-08-31 | 1989-03-08 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Feed mechanism for transporting a record carrier in a printer |
US5016530A (en) * | 1989-11-02 | 1991-05-21 | Harris Graphics Corporation | Ink mover distributor roll |
US5415094A (en) * | 1993-10-18 | 1995-05-16 | Morrone; Ross F. | Apparatus and method for inking of an engraving die utilizing a selectively rotatable inking roller with external ribbing thereon |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1207259A (en) * | 1910-10-11 | 1916-12-05 | Wood Newspaper Mach Corp | Inking device for printing-presses. |
US2354981A (en) * | 1942-06-11 | 1944-08-01 | Cottrell C B & Sons Co | Ink distribution for rotary printing presses |
US2393471A (en) * | 1942-11-12 | 1946-01-22 | Autographic Register Co | Paper support |
US2404159A (en) * | 1942-06-11 | 1946-07-16 | Cottrell C B & Sons Co | Transfer roller for ink distributions |
US2429670A (en) * | 1943-08-06 | 1947-10-28 | Sam L Bingham S Son Mfg Co | Printer's roller |
US2464040A (en) * | 1945-01-23 | 1949-03-08 | William C Huebner | Dampening or moistening roller |
US2690119A (en) * | 1951-05-25 | 1954-09-28 | Coates Brothers & Co | Bimetallic moistening roller for lithographic printing apparatus |
US2996981A (en) * | 1959-03-05 | 1961-08-22 | Maschf Augsburg Nuernberg Ag | Wetting device for offset printing machines |
US3039386A (en) * | 1958-08-18 | 1962-06-19 | Nelson W Trisler | Offset image forming head |
US3068789A (en) * | 1956-04-26 | 1962-12-18 | Ciba Ltd | Vigoureux printing rollers |
US3098437A (en) * | 1960-12-29 | 1963-07-23 | Miehle Goss Dexter Inc | Inking arrangement for rotary printing presses |
US3508489A (en) * | 1969-05-15 | 1970-04-28 | Harris Intertype Corp | Fluid applying mechanism |
US3534458A (en) * | 1967-08-18 | 1970-10-20 | Ppg Industries Inc | Covered roll |
US3613575A (en) * | 1968-05-27 | 1971-10-19 | Kantor Press Kontrols Inc | Oscillator roller for printing presses |
US3651758A (en) * | 1969-12-17 | 1972-03-28 | Moore Business Forms Inc | Ink transfer system |
-
1972
- 1972-12-08 US US313291A patent/US3877368A/en not_active Expired - Lifetime
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1207259A (en) * | 1910-10-11 | 1916-12-05 | Wood Newspaper Mach Corp | Inking device for printing-presses. |
US2354981A (en) * | 1942-06-11 | 1944-08-01 | Cottrell C B & Sons Co | Ink distribution for rotary printing presses |
US2404159A (en) * | 1942-06-11 | 1946-07-16 | Cottrell C B & Sons Co | Transfer roller for ink distributions |
US2393471A (en) * | 1942-11-12 | 1946-01-22 | Autographic Register Co | Paper support |
US2429670A (en) * | 1943-08-06 | 1947-10-28 | Sam L Bingham S Son Mfg Co | Printer's roller |
US2464040A (en) * | 1945-01-23 | 1949-03-08 | William C Huebner | Dampening or moistening roller |
US2690119A (en) * | 1951-05-25 | 1954-09-28 | Coates Brothers & Co | Bimetallic moistening roller for lithographic printing apparatus |
US3068789A (en) * | 1956-04-26 | 1962-12-18 | Ciba Ltd | Vigoureux printing rollers |
US3039386A (en) * | 1958-08-18 | 1962-06-19 | Nelson W Trisler | Offset image forming head |
US2996981A (en) * | 1959-03-05 | 1961-08-22 | Maschf Augsburg Nuernberg Ag | Wetting device for offset printing machines |
US3098437A (en) * | 1960-12-29 | 1963-07-23 | Miehle Goss Dexter Inc | Inking arrangement for rotary printing presses |
US3534458A (en) * | 1967-08-18 | 1970-10-20 | Ppg Industries Inc | Covered roll |
US3613575A (en) * | 1968-05-27 | 1971-10-19 | Kantor Press Kontrols Inc | Oscillator roller for printing presses |
US3508489A (en) * | 1969-05-15 | 1970-04-28 | Harris Intertype Corp | Fluid applying mechanism |
US3651758A (en) * | 1969-12-17 | 1972-03-28 | Moore Business Forms Inc | Ink transfer system |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3922523A (en) * | 1973-05-16 | 1975-11-25 | Sheldon Edward E | Apparatus for producing x-ray images as radiographs |
US4752145A (en) * | 1985-07-04 | 1988-06-21 | Siemens Aktiengesellschaft | Variable length paper guide for paper tractors in printer facilities |
EP0305784A2 (en) * | 1987-08-31 | 1989-03-08 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Feed mechanism for transporting a record carrier in a printer |
EP0305784A3 (en) * | 1987-08-31 | 1990-02-28 | Nixdorf Computer Aktiengesellschaft | Feed mechanism for transporting a record carrier in a printer |
US5016530A (en) * | 1989-11-02 | 1991-05-21 | Harris Graphics Corporation | Ink mover distributor roll |
US5415094A (en) * | 1993-10-18 | 1995-05-16 | Morrone; Ross F. | Apparatus and method for inking of an engraving die utilizing a selectively rotatable inking roller with external ribbing thereon |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ITEK GRAPHIX CORP., 800 SOUTH STREET, 5TH FLOOR, W Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITEK CORPORATION, A CORP OF DE.;REEL/FRAME:004520/0607 Effective date: 19860205 Owner name: ITEK GRAPHIX CORP., A CORP OF DELAWARE,MASSACHUSET Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ITEK CORPORATION, A CORP OF DE.;REEL/FRAME:004520/0607 Effective date: 19860205 |
|
AS | Assignment |
Owner name: MANUFACTURERS HANOVER COMMERCIAL CORPORATION, A CO Free format text: SECURITY INTEREST;ASSIGNOR:ITEK GRAPHIX CORP.;REEL/FRAME:004552/0917 Effective date: 19860205 Owner name: MANUFACTURERS HANOVER COMMERCIAL CORPORATION, NEW Free format text: SECURITY INTEREST;ASSIGNOR:ITEK GRAPHIX CORP.;REEL/FRAME:004552/0917 Effective date: 19860205 |
|
AS | Assignment |
Owner name: A. B. DICK COMPANY, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITEK GRAPHIX CORP.;REEL/FRAME:005181/0192 Effective date: 19890401 |
|
AS | Assignment |
Owner name: A. B. DICK COMPANY, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITEK GRAPHIX CORP.;REEL/FRAME:005800/0562 Effective date: 19890401 |