US2036835A - Transfer method and means - Google Patents

Transfer method and means Download PDF

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Publication number
US2036835A
US2036835A US701412A US70141233A US2036835A US 2036835 A US2036835 A US 2036835A US 701412 A US701412 A US 701412A US 70141233 A US70141233 A US 70141233A US 2036835 A US2036835 A US 2036835A
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US
United States
Prior art keywords
printing
cylinder
impression
cylinders
blanket
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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US701412A
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English (en)
Inventor
Benjamin L Sites
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.)
Miehle Printing Press and Manufacturing Co
Original Assignee
Miehle Printing Press and Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miehle Printing Press and Manufacturing Co filed Critical Miehle Printing Press and Manufacturing Co
Priority to US701412A priority Critical patent/US2036835A/en
Priority to DEI48858D priority patent/DE625327C/de
Application granted granted Critical
Publication of US2036835A publication Critical patent/US2036835A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/04—Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs

Definitions

  • Mechanisms of this nature would include inking mechanism of printing presses which embo'dy series of ink distributing rollers, some of which are of steel and others of a flexible substance, some of the latter rollers being in contact with the steel rollers in order to distribute the ink, while others are arranged to contact with a printing form for the purpose of applying a film of ink thereto.
  • a particularly advantageous application of my invention would be in connection with a pianographic offset printing press in which a rubber blanket is used to transfer an impression from a planographic printing plate to the paper, that is to say, instead of effecting an impression direct from the printing plate onto the material to be printed, an impression is, first transferred from the inked plate to the rubber blanket, which then applies the impression to the print receiving material.
  • a roller with a coating of composition having a thickness of inch and the roller having a total diameter of 0.8 inch was rolled over a flat surface and by suitably marking the roller periphery, it was ascertained that when the composition was not compressed during the rolling of the roller over said surface, the roller traveled 2.5 inches per revolution; however, when during rolling, the composition coating was compressed to half its normal thickness, then the roller traveled 2.75 inches. In other words, compressing of the composition coating to half its normal thickness added about 10 per cent to the diameter of the roller at its point of contact with a solid or non resilient surface.
  • the fundamental elements of an offset press are three cylinders, namely a plate cylinder which carries the printing plate or form, a blanket cylinder which is provided with a resilient blanket to receive an impression from the form, and an impression cylinder, the surface of which latter might be bare metal or if desired, might be covered with a suitable non-resilient packing. All of these cylinders are provided with bearers and intermeshing gears which are essential elements in printing presses of this class, the bearers of the plate cylinder under normal conditions being in rolling contact with the bearers of the blanket cylinder, and the bearers of the latter in turn being in rolling contact with the bearers of the impression cylinder.
  • the surface speed of the blanket cylinder at its printing zone increases due to the conditions explained above and as proven by my tests, it is evident that in order to avoid any distortion of the printing image and any slippage of the material during printing, the surface speed of the impression cylinder as well as of the plate cylinder should be correspondingly increased.
  • the proportions of the respective diameters being such that under non-printing conditions the surface speed of the plate and impression cylinders will be greater than that of the blanket cylinder, while under printing conditions the surface speed at the printing zone of these cylinders will be identical.
  • Figure 1 shows the general arrangement of an offset press in connection with which my invention may be applied to advantage
  • Figure 2 shows the distortion of the resilient material on a'printing roller when rolled under pressure over a non-resilient flat surface
  • Figure 3 indicates to an exaggerated extent the condition which arises in an ofiset press when pressure is applied at the printing zone between the respective printing cylinders;
  • Figure 4 gives an enlarged view of the distorted portion shown in Figure 3 of a printing blanket at the point of contact between the blanket cylinder nuances and the impression cylinder of a printing press;
  • Figure 5 illustrates diagrammatically a formcylinder, blanket cylinder and an impression cylinder with their bearers and associated gears.
  • the press In the vicinity of the plate cylinder i i, and in operative relation therewith, the press is equipped with the conventional dampening mechanism it and inking mechanism it, the former of which mechanism serves for applying a film of ink repelling substance to the non-design portions of the plate ll before the form rollers of the inking mechanism are brought into contact with the plate in order to ink its design portions.
  • the peripheries of the bearers on the impression cylinder it, plate cylinder it and blanket cylinder it are denoted by reference numerals it, i l and iii respectively. These peripheries also correspond with the pitch lines of the gears which, as indicated'above, are provided on each one of said cylinders.
  • the radius R represents the normal overall radius of the roller D. Assuming that the roller D is rotated in a clockwise direction, as viewed in Figure 2, and rolled under pressure over a hard surface A, then therubber coating B at the zone of contact with the hard surface A will undergo a deformation and the displaced rubber will become deflected to the right. Therefore it will be seen that due to the displacement of rubber, the normal radius R has become increased to assume a dimension R.
  • the first pair to be considered is the plate cylinder it and the lanket cylinder it, the surfaces of which during printing are in direct rolling contact, because the blanket on the cylinder it is to receive an im pression direct from the inked plate on the cylinder i l.
  • Planographic plates such as are commonly used in direct as well as in offset lithog raphy have a grained surface which carries a design or image usually produced by means of a halftone screen so that'the design is made up of equally spaced infinitesimal dots varying in area according to the depth of the tone to be printed.
  • the second rolling pair functions to transfer the impression from the blanket It to the print receiving material during the latters passage between the blanket cylinder and the impression cylinder.
  • the eflective periphery of that cylinder has increased 5 per cent, as compared with its normal periphery, which latter is equal to that of the cooperating plate and impression cylinders, then a slippage of 5 per cent of the material to be printed will occur during each revolution.
  • This slippage of the material may all take place with relation to either one of the two cylinders, or it may be divided between them, that is to say, the material may to some extent slip on the blanket and to some extent on the impression cylinder.
  • the packing dimensions are as follows: plate cylinder .005 inch over the bearer, blanket cylinder .001 inch under the bearer, and impression cylinder .005 inch over the bearer.
  • diameters of said cylinders being so dimensioned 1 impression receiving surface below its bearers and said form cylinder having its active surface above its bearers, the diameters of said cylinders being so dimensioned that under printing condition said surfaces at the printing zone travel at the same speed to transfer a true image undistorted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Printing Methods (AREA)
US701412A 1933-12-08 1933-12-08 Transfer method and means Expired - Lifetime US2036835A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US701412A US2036835A (en) 1933-12-08 1933-12-08 Transfer method and means
DEI48858D DE625327C (de) 1933-12-08 1934-01-25 Rotationsdruckmaschine, insbesondere Rotationsgummidruckmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US701412A US2036835A (en) 1933-12-08 1933-12-08 Transfer method and means

Publications (1)

Publication Number Publication Date
US2036835A true US2036835A (en) 1936-04-07

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Family Applications (1)

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US701412A Expired - Lifetime US2036835A (en) 1933-12-08 1933-12-08 Transfer method and means

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US (1) US2036835A (de)
DE (1) DE625327C (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488142A (en) * 1943-10-28 1949-11-15 Pratt Apparatus for automatically processing film
US2587439A (en) * 1950-01-05 1952-02-26 Electrographic Corp Making ready cylindrical printing plate
US2619901A (en) * 1946-08-28 1952-12-02 Harris Seybold Co Impression length varying means for rotary offset printing machines
US2806425A (en) * 1950-01-23 1957-09-17 Giori Gualtiero Process for preparing inking rollers for multicolor inking of a printing plate
US2893320A (en) * 1956-03-29 1959-07-07 Fort Wayne Corrugated Paper Co Printing of corrugated board
US2972297A (en) * 1957-10-03 1961-02-21 Champlain Company Inc Multicolor printing on a continuous web
US3014421A (en) * 1958-04-21 1961-12-26 Robert T Townsend Printing press
US3138097A (en) * 1962-03-14 1964-06-23 Harris Intertype Corp Printing press and method
US3196788A (en) * 1962-03-19 1965-07-27 Michle Goss Dexter Inc Bearer ring desing for four cooperating cylinders
US3203346A (en) * 1961-05-02 1965-08-31 Harris Intertype Corp Three cylinder convertible printing press
US4051774A (en) * 1976-05-17 1977-10-04 Jack Barnes Engineering, Inc. Machine for printing measuring tapes
DE3922559A1 (de) * 1989-07-08 1991-01-17 Roland Man Druckmasch Offsetdruckwerk
US5165341A (en) * 1989-07-06 1992-11-24 Man Roland Druckmaschinen Ag Offset printing machine
EP0607665A2 (de) * 1993-01-08 1994-07-27 Toyo Ink Manufacturing Co., Ltd. Bildübertragungsvorrichtung
US5429048A (en) * 1989-10-05 1995-07-04 Gaffney; John M. Offset lithographic printing press
US6374734B1 (en) 1989-10-05 2002-04-23 Heidelberger Druckmaschinen Ag Tubular printing blanket
WO2004110761A1 (de) 2003-06-17 2004-12-23 Koenig & Bauer Aktiengesellschaft Druckeinheiten mit schmitzringen in einer rotationsdruckmaschine
EP2239140A1 (de) * 2009-04-07 2010-10-13 Rotatek, S.A. Offsetdruckmaschine
DE102010015628A1 (de) 2009-04-20 2011-02-10 Lenze Automation Gmbh Steuerung für einen Walzenantrieb bei einer Druckmaschine und ein Verfahren zur Drehzahlsteuerung von Walzen in einer Druckmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953461A (en) * 1988-05-20 1990-09-04 Harris Graphics Corporation System for continuously rotating plate a blanket cylinders at relatively different surface speeds

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488142A (en) * 1943-10-28 1949-11-15 Pratt Apparatus for automatically processing film
US2619901A (en) * 1946-08-28 1952-12-02 Harris Seybold Co Impression length varying means for rotary offset printing machines
US2587439A (en) * 1950-01-05 1952-02-26 Electrographic Corp Making ready cylindrical printing plate
US2806425A (en) * 1950-01-23 1957-09-17 Giori Gualtiero Process for preparing inking rollers for multicolor inking of a printing plate
US2893320A (en) * 1956-03-29 1959-07-07 Fort Wayne Corrugated Paper Co Printing of corrugated board
US2972297A (en) * 1957-10-03 1961-02-21 Champlain Company Inc Multicolor printing on a continuous web
US3014421A (en) * 1958-04-21 1961-12-26 Robert T Townsend Printing press
US3203346A (en) * 1961-05-02 1965-08-31 Harris Intertype Corp Three cylinder convertible printing press
US3138097A (en) * 1962-03-14 1964-06-23 Harris Intertype Corp Printing press and method
US3196788A (en) * 1962-03-19 1965-07-27 Michle Goss Dexter Inc Bearer ring desing for four cooperating cylinders
US4051774A (en) * 1976-05-17 1977-10-04 Jack Barnes Engineering, Inc. Machine for printing measuring tapes
US5165341A (en) * 1989-07-06 1992-11-24 Man Roland Druckmaschinen Ag Offset printing machine
EP0408972A3 (en) * 1989-07-08 1991-07-24 Man Roland Druckmaschinen Ag Offset-printing group
EP0408972A2 (de) * 1989-07-08 1991-01-23 MAN Roland Druckmaschinen AG Offsetdruckwerk
DE3922559A1 (de) * 1989-07-08 1991-01-17 Roland Man Druckmasch Offsetdruckwerk
US5009158A (en) * 1989-07-08 1991-04-23 Man Roland Druckmaschinen Ag Offset printing machine system
US5429048A (en) * 1989-10-05 1995-07-04 Gaffney; John M. Offset lithographic printing press
US6386100B1 (en) 1989-10-05 2002-05-14 Heidelberger Druckmaschinen Ag Offset lithographic printing press
US6374734B1 (en) 1989-10-05 2002-04-23 Heidelberger Druckmaschinen Ag Tubular printing blanket
EP0607665A3 (de) * 1993-01-08 1995-01-11 Toyo Ink Mfg Co Bildübertragungsvorrichtung.
US5423254A (en) * 1993-01-08 1995-06-13 Toyo Ink Manufacturing Co., Ltd. Image-transfer apparatus with highly accurate registering performance
EP0607665A2 (de) * 1993-01-08 1994-07-27 Toyo Ink Manufacturing Co., Ltd. Bildübertragungsvorrichtung
WO2004110761A1 (de) 2003-06-17 2004-12-23 Koenig & Bauer Aktiengesellschaft Druckeinheiten mit schmitzringen in einer rotationsdruckmaschine
DE10327490A1 (de) * 2003-06-17 2005-01-27 Koenig & Bauer Ag Druckwerk und Druckeinheit einer Rotationsdruckmaschine
DE10327490B4 (de) * 2003-06-17 2006-09-21 Koenig & Bauer Ag Druckeinheit einer Rotationsdruckmaschine
EP1707356A1 (de) 2003-06-17 2006-10-04 Koenig & Bauer Aktiengesellschaft Druckeinheit mit Schmitzringen in einer Rotationsdruckmaschine
US20070022886A1 (en) * 2003-06-17 2007-02-01 Masuch Bernd K Printing units comprising bearing rings in a rotary press
US7441501B2 (en) 2003-06-17 2008-10-28 Koenig & Aktiengesellschaft Printing units comprising bearing rings in a rotary press
EP2239140A1 (de) * 2009-04-07 2010-10-13 Rotatek, S.A. Offsetdruckmaschine
DE102010015628A1 (de) 2009-04-20 2011-02-10 Lenze Automation Gmbh Steuerung für einen Walzenantrieb bei einer Druckmaschine und ein Verfahren zur Drehzahlsteuerung von Walzen in einer Druckmaschine
DE102010015628B4 (de) * 2009-04-20 2017-11-23 Lenze Automation Gmbh Verfahren zur Drehzahlsteuerung von Walzen in einer Druckmaschine

Also Published As

Publication number Publication date
DE625327C (de) 1936-02-07

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