EP2805824A1 - Liquid transfer apparatus - Google Patents

Liquid transfer apparatus Download PDF

Info

Publication number
EP2805824A1
EP2805824A1 EP13168746.9A EP13168746A EP2805824A1 EP 2805824 A1 EP2805824 A1 EP 2805824A1 EP 13168746 A EP13168746 A EP 13168746A EP 2805824 A1 EP2805824 A1 EP 2805824A1
Authority
EP
European Patent Office
Prior art keywords
motor
roller
liquid
input signal
sheet
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.)
Withdrawn
Application number
EP13168746.9A
Other languages
German (de)
French (fr)
Inventor
James Anthony Graham
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.)
Crabtree of Gateshead Ltd
Original Assignee
Crabtree of Gateshead Ltd
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 Crabtree of Gateshead Ltd filed Critical Crabtree of Gateshead Ltd
Priority to EP13168746.9A priority Critical patent/EP2805824A1/en
Priority to PCT/EP2014/059759 priority patent/WO2014187699A1/en
Publication of EP2805824A1 publication Critical patent/EP2805824A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/004Driving means for ink rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/004Electric or hydraulic features of drives
    • B41F13/0045Electric driving devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F23/00Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08Print finishing devices, e.g. for glossing prints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/15Devices for moving vibrator-rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F7/00Rotary lithographic machines
    • B41F7/20Details
    • B41F7/24Damping devices
    • B41F7/26Damping devices using transfer rollers

Definitions

  • the present invention relates to a liquid transfer apparatus for transferring liquid to at least one roller of a sheet printing or coating apparatus.
  • the invention relates particularly, but not exclusively, to an apparatus for transferring ink in a lithographic sheet printing apparatus.
  • Ink application apparatus in which ink is transferred from an ink reservoir via alternating rubber ink transfer rollers and copper ink transfer rollers to rubber inker rollers in contact with the surface of a copper plate cylinder for transferring an image for printing via a rubber blanket cylinder to a metal sheet.
  • the plate cylinder is connected via gears to the other copper rollers, and the copper rollers drive the rubber rollers with which they are in contact by friction.
  • the plate cylinder and some of the copper ink transfer rollers drive inker rollers in contact with the surface of the plate cylinder by friction such that the rotational velocities of the plate cylinder and contacting inker rollers are matched to minimise relative motion between the mutually contacting parts of the inker rollers and the plate cylinder.
  • This arrangement suffers from the drawback that under certain circumstances, for example as a result of some ink media where solvent action is aggressive to rubber parts of rollers, some swelling or shrinkage can occur as a result of which changes in roller diameter can occur. As a result, relative movement of the touching points of the rollers occurs, which in turn causes degraded print performance and wasted power consumption.
  • This known arrangement also suffers from the disadvantage that adjustments to plate cylinder dressings (underpackings) for adjusting the length of the printed image will directly affect surface velocity matching. Furthermore, in order to wash the inker, or run the inker for printing preparation, but without running the press, it is necessary to provide an auxiliary motor and clutched transmission, which significantly increases the cost of the apparatus.
  • Preferred embodiments of the present invention seek to overcome one or more of the above disadvantages of the prior art.
  • a liquid transfer apparatus for transferring liquid to at least one roller of a sheet printing or sheet coating apparatus having a liquid application roller for applying liquid to a sheet of material, the liquid transfer apparatus comprising:
  • control means for (i) receiving at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and for (ii) controlling at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller, this provides the advantage of enabling relative movement between the contact points on the surfaces of the first roller and the corresponding third roller to be minimised, thereby minimising shear forces applied to the liquid, as a result of which print quality and efficiency of energy consumption can be improved.
  • the present invention also has the advantage that the gears driving the rollers can be subjected to a slight preload, which reduces rattling during operation of the apparatus, thereby further improving print quality.
  • the further advantage is provided that an inker of the apparatus can be driven independently of the press, thereby avoiding the need for a clutched transmission and therefore reducing the cost of the apparatus.
  • the control means may be adapted to determine at least one first torque generated by a respective said first motor and at least one second torque generated by a respective said second motor.
  • the control means may be adapted to generate at least one first output signal for controlling a respective said first motor and at least one second output signal for controlling a respective said second motor and to adjust at least one said first and/or second output signal in response to changes in at least one said first and/or second input signal.
  • a sheet printing or sheet coating apparatus comprising a liquid application roller for applying liquid to a sheet of material, a liquid transfer apparatus as defined above, at least one third roller for receiving liquid from at least one said first roller, and at least one second motor for causing rotation of said liquid application roller.
  • a computer program product adapted to be executed by a computer to control a liquid transfer device as defined above, the computer program product comprising first computer code executable by a computer to cause said control means to (i) receive at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and (ii) control at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller.
  • the computer program product may further comprise second computer code executable by a computer to cause said control means to determine at least one first torque generated by a respective said first motor and at least one second torque generated by a respective said second motor.
  • the computer program product may further comprise third computer code executable by a computer to cause said control means to generate at least one first output signal for controlling a respective said first motor and at least one second output signal for controlling a respective said second motor and to adjust at least one said first and/or second output signal in response to changes in at least one said first and/or second input signal.
  • Figure 1 is a schematic end view of part of a sheet printing apparatus embodying the present invention.
  • a sheet printing apparatus 2 of the present invention for applying ink to a sheet 4 of material such as metal receives the sheet 4 in the direction of arrow A between a copper impression cylinder 6 and a rubber blanket cylinder 8 for transferring an image to the sheet 4, in a manner which will be familiar to persons skilled in the art.
  • Ink is transferred from an ink reservoir (not shown) via first rubber ink transfer rollers 10, 12 and first copper ink transfer rollers 11, 13, 15 to rubber second ink transfer rollers 14, 16, 18, 20 which are in rolling contact with the surface of a plate cylinder 22 and which are known to persons skilled in the art as inker rollers.
  • the first copper ink transfer rollers 11, 13, 15 are driven by means of a first motor 24 connected to gears (not shown), and rotation of the first copper ink transfer rollers 11, 13, 15 drives first rubber ink transfer rollers 10, 12 and second rubber ink transfer rollers 14, 16, 18, 20 by means of friction.
  • the first motor 24 provides first input signals via first input line 26 to a controller 28 enabling the controller 28 to determine the torque generated by the first motor 24.
  • the controller 28 provides first output signals along first output line 30 for controlling operation of the first motor 24.
  • the impression cylinder 6 and plate cylinder 22 are interconnected by gears (not shown) and are driven via a drive gear 32 connected via a bevel gear 34 to an output shaft of a second motor 36, and rotation of the copper impression cylinder 6 and copper plate cylinder 22 causes rotation of the rubber blanket cylinder 8 by friction.
  • the second motor 36 provides second input signals via second input line 38 to the controller 28 enabling the controller 28 to determine the torque generated by the second motor 36.
  • the controller 28 also provides second output signals along second output line 40 for controlling operation of the second motor 36.
  • the controller 28 determines the torque generated by the first 24 and second 36 motors and controls operation of the first 24 and second 36 motors to minimise relative motion between the mutually touching locations on the surfaces of the second ink transfer rollers 14, 16, 18, 20 and the plate cylinder 22. This reduces the shear forces on the ink applied to the plate cylinder 22 by the second ink transfer rollers 14, 16, 18, 20, thereby improving the print quality.
  • the controller 28 can operate by means of a suitable algorithm, or can apply incremental changes to the first and second control signals and increase, maintain or decrease those changes in response to detected changes in the first and second input signals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Abstract

An ink transfer apparatus for transferring liquid to at least one roller of a sheet printing apparatus (2) having a blanket cylinder (8) for applying ink to a sheet (4) of material is disclosed. The ink transfer apparatus comprises ink transfer rollers (14, 16, 18, 20) for transferring ink to a plate cylinder (22) and a first motor (24) for causing rotation of the ink transfer rollers, and a controller (28) for receiving a first input signal dependent on an operating parameter of the first motor. The controller receives a second input signal dependent on an operating parameter of a second motor (36) for causing rotation of the blanket cylinder for applying liquid to the sheet of material, and controls the first and second motors in dependence on the first and second input signals to reduce relative movement between a location on a surface an ink transfer roller touching the plate cylinder and a location on a surface of the plate cylinder touching the ink transfer roller.

Description

  • The present invention relates to a liquid transfer apparatus for transferring liquid to at least one roller of a sheet printing or coating apparatus. The invention relates particularly, but not exclusively, to an apparatus for transferring ink in a lithographic sheet printing apparatus.
  • Ink application apparatus are known in which ink is transferred from an ink reservoir via alternating rubber ink transfer rollers and copper ink transfer rollers to rubber inker rollers in contact with the surface of a copper plate cylinder for transferring an image for printing via a rubber blanket cylinder to a metal sheet. The plate cylinder is connected via gears to the other copper rollers, and the copper rollers drive the rubber rollers with which they are in contact by friction. In particular, the plate cylinder and some of the copper ink transfer rollers drive inker rollers in contact with the surface of the plate cylinder by friction such that the rotational velocities of the plate cylinder and contacting inker rollers are matched to minimise relative motion between the mutually contacting parts of the inker rollers and the plate cylinder.
  • This arrangement suffers from the drawback that under certain circumstances, for example as a result of some ink media where solvent action is aggressive to rubber parts of rollers, some swelling or shrinkage can occur as a result of which changes in roller diameter can occur. As a result, relative movement of the touching points of the rollers occurs, which in turn causes degraded print performance and wasted power consumption. This known arrangement also suffers from the disadvantage that adjustments to plate cylinder dressings (underpackings) for adjusting the length of the printed image will directly affect surface velocity matching. Furthermore, in order to wash the inker, or run the inker for printing preparation, but without running the press, it is necessary to provide an auxiliary motor and clutched transmission, which significantly increases the cost of the apparatus.
  • Preferred embodiments of the present invention seek to overcome one or more of the above disadvantages of the prior art.
  • According to an aspect of the present invention, there is provided a liquid transfer apparatus for transferring liquid to at least one roller of a sheet printing or sheet coating apparatus having a liquid application roller for applying liquid to a sheet of material, the liquid transfer apparatus comprising:
    • at least one first roller for transferring liquid from a liquid inlet or from at least one second roller to at least one third roller;
    • at least one first motor for causing rotation of at least one said first roller; and
    • control means for (i) receiving at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and for (ii) controlling at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller.
  • By providing control means for (i) receiving at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and for (ii) controlling at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller, this provides the advantage of enabling relative movement between the contact points on the surfaces of the first roller and the corresponding third roller to be minimised, thereby minimising shear forces applied to the liquid, as a result of which print quality and efficiency of energy consumption can be improved. The present invention also has the advantage that the gears driving the rollers can be subjected to a slight preload, which reduces rattling during operation of the apparatus, thereby further improving print quality. The further advantage is provided that an inker of the apparatus can be driven independently of the press, thereby avoiding the need for a clutched transmission and therefore reducing the cost of the apparatus.
  • The control means may be adapted to determine at least one first torque generated by a respective said first motor and at least one second torque generated by a respective said second motor.
  • The control means may be adapted to generate at least one first output signal for controlling a respective said first motor and at least one second output signal for controlling a respective said second motor and to adjust at least one said first and/or second output signal in response to changes in at least one said first and/or second input signal.
  • According to another aspect of the present invention, there is provided a sheet printing or sheet coating apparatus comprising a liquid application roller for applying liquid to a sheet of material, a liquid transfer apparatus as defined above, at least one third roller for receiving liquid from at least one said first roller, and at least one second motor for causing rotation of said liquid application roller.
  • According to a further aspect of the present invention, there is provided a computer program product adapted to be executed by a computer to control a liquid transfer device as defined above, the computer program product comprising first computer code executable by a computer to cause said control means to (i) receive at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and (ii) control at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller.
  • The computer program product may further comprise second computer code executable by a computer to cause said control means to determine at least one first torque generated by a respective said first motor and at least one second torque generated by a respective said second motor.
  • The computer program product may further comprise third computer code executable by a computer to cause said control means to generate at least one first output signal for controlling a respective said first motor and at least one second output signal for controlling a respective said second motor and to adjust at least one said first and/or second output signal in response to changes in at least one said first and/or second input signal.
  • A preferred embodiment of the invention will now be described, by way of example only and not in any limitative sense, with reference to the accompanying drawings, in which:-
  • Figure 1 is a schematic end view of part of a sheet printing apparatus embodying the present invention.
  • Referring to Figure 1, a sheet printing apparatus 2 of the present invention for applying ink to a sheet 4 of material such as metal receives the sheet 4 in the direction of arrow A between a copper impression cylinder 6 and a rubber blanket cylinder 8 for transferring an image to the sheet 4, in a manner which will be familiar to persons skilled in the art. Ink is transferred from an ink reservoir (not shown) via first rubber ink transfer rollers 10, 12 and first copper ink transfer rollers 11, 13, 15 to rubber second ink transfer rollers 14, 16, 18, 20 which are in rolling contact with the surface of a plate cylinder 22 and which are known to persons skilled in the art as inker rollers.
  • The first copper ink transfer rollers 11, 13, 15 are driven by means of a first motor 24 connected to gears (not shown), and rotation of the first copper ink transfer rollers 11, 13, 15 drives first rubber ink transfer rollers 10, 12 and second rubber ink transfer rollers 14, 16, 18, 20 by means of friction. The first motor 24 provides first input signals via first input line 26 to a controller 28 enabling the controller 28 to determine the torque generated by the first motor 24. The controller 28 provides first output signals along first output line 30 for controlling operation of the first motor 24. The impression cylinder 6 and plate cylinder 22 are interconnected by gears (not shown) and are driven via a drive gear 32 connected via a bevel gear 34 to an output shaft of a second motor 36, and rotation of the copper impression cylinder 6 and copper plate cylinder 22 causes rotation of the rubber blanket cylinder 8 by friction. The second motor 36 provides second input signals via second input line 38 to the controller 28 enabling the controller 28 to determine the torque generated by the second motor 36. The controller 28 also provides second output signals along second output line 40 for controlling operation of the second motor 36.
  • In operation, the controller 28 determines the torque generated by the first 24 and second 36 motors and controls operation of the first 24 and second 36 motors to minimise relative motion between the mutually touching locations on the surfaces of the second ink transfer rollers 14, 16, 18, 20 and the plate cylinder 22. This reduces the shear forces on the ink applied to the plate cylinder 22 by the second ink transfer rollers 14, 16, 18, 20, thereby improving the print quality. The controller 28 can operate by means of a suitable algorithm, or can apply incremental changes to the first and second control signals and increase, maintain or decrease those changes in response to detected changes in the first and second input signals.
  • It will be appreciated by persons skilled in the art that the above embodiment has been described by way of example only, and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the appended claims.

Claims (7)

  1. A liquid transfer apparatus for transferring liquid to at least one roller of a sheet printing or sheet coating apparatus having a liquid application roller for applying liquid to a sheet of material, the liquid transfer apparatus comprising:
    at least one first roller for transferring liquid from a liquid inlet or from at least one second roller to at least one third roller;
    at least one first motor for causing rotation of at least one said first roller; and
    control means for (i) receiving at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and for (ii) controlling at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller.
  2. An apparatus according to claim 1, wherein said control means is adapted to determine at least one first torque generated by a respective said first motor and at least one second torque generated by a respective said second motor.
  3. An apparatus according to claim 1 or 2, said control means is adapted to generate at least one first output signal for controlling a respective said first motor and at least one second output signal for controlling a respective said second motor and to adjust at least one said first and/or second output signal in response to changes in at least one said first and/or second input signal.
  4. A sheet printing or sheet coating apparatus comprising a liquid application roller for applying liquid to a sheet of material, a liquid transfer apparatus according to any one of the preceding claims, at least one third roller for receiving liquid from at least one said first roller, and at least one second motor for causing rotation of said liquid application roller.
  5. A computer program product adapted to be executed by a computer to control a liquid transfer device according to any one of claims 1 to 3, the computer program product comprising first computer code executable by a computer to cause said control means to (i) receive at least one first input signal dependent on at least one operating parameter of a respective said first motor and at least one second input signal dependent on at least one operating parameter of a respective second motor for causing rotation of a liquid application roller for applying liquid to a sheet of material, and (ii) control at least one said first motor and at least one said second motor in dependence on at least one said first input signal and at least one said second input signal to reduce relative movement between a location on a surface of at least one said first roller touching a said third roller and a location on a surface of said third roller touching said first roller.
  6. A computer program product according to claim 5, further comprising second computer code executable by a computer to cause said control means to determine at least one first torque generated by a respective said first motor and at least one second torque generated by a respective said second motor.
  7. A computer program product according to claim 5 or 6, further comprising third computer code executable by a computer to cause said control means to generate at least one first output signal for controlling a respective said first motor and at least one second output signal for controlling a respective said second motor and to adjust at least one said first and/or second output signal in response to changes in at least one said first and/or second input signal.
EP13168746.9A 2013-05-22 2013-05-22 Liquid transfer apparatus Withdrawn EP2805824A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13168746.9A EP2805824A1 (en) 2013-05-22 2013-05-22 Liquid transfer apparatus
PCT/EP2014/059759 WO2014187699A1 (en) 2013-05-22 2014-05-13 Liquid transfer apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13168746.9A EP2805824A1 (en) 2013-05-22 2013-05-22 Liquid transfer apparatus

Publications (1)

Publication Number Publication Date
EP2805824A1 true EP2805824A1 (en) 2014-11-26

Family

ID=48534169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13168746.9A Withdrawn EP2805824A1 (en) 2013-05-22 2013-05-22 Liquid transfer apparatus

Country Status (2)

Country Link
EP (1) EP2805824A1 (en)
WO (1) WO2014187699A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107175887A (en) * 2017-05-27 2017-09-19 东台世恒机械科技有限公司 One kind printing machine actuating device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004042264A1 (en) * 2004-09-01 2006-03-02 Koenig & Bauer Ag Offset rotary printing machine`s plate cylinder rotating method, involves simultaneously activating drives of plate cylinder, damping unit and inking rollers with different speeds for compensation of moments transferred to cylinder
WO2007099147A2 (en) * 2006-03-03 2007-09-07 Koenig & Bauer Aktiengesellschaft Printing groups of a printing press
US20100326303A1 (en) * 2009-06-26 2010-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Method of controlling an ink profile in an inking unit during interruptions of a printing operation
EP2357083A1 (en) * 2010-02-08 2011-08-17 Komori Corporation Drive control method and drive control apparatus for printing press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004042264A1 (en) * 2004-09-01 2006-03-02 Koenig & Bauer Ag Offset rotary printing machine`s plate cylinder rotating method, involves simultaneously activating drives of plate cylinder, damping unit and inking rollers with different speeds for compensation of moments transferred to cylinder
WO2007099147A2 (en) * 2006-03-03 2007-09-07 Koenig & Bauer Aktiengesellschaft Printing groups of a printing press
US20100326303A1 (en) * 2009-06-26 2010-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Method of controlling an ink profile in an inking unit during interruptions of a printing operation
EP2357083A1 (en) * 2010-02-08 2011-08-17 Komori Corporation Drive control method and drive control apparatus for printing press

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107175887A (en) * 2017-05-27 2017-09-19 东台世恒机械科技有限公司 One kind printing machine actuating device

Also Published As

Publication number Publication date
WO2014187699A1 (en) 2014-11-27

Similar Documents

Publication Publication Date Title
JP4772766B2 (en) Method and driving device for driving a printing device having a short inking device in a processing machine
EP2805824A1 (en) Liquid transfer apparatus
CN101117042A (en) Variable printing machine
MX344272B (en) Intaglio printing press.
WO2005082625A1 (en) Ink form roller drive for improving printing quality
JP2000117946A5 (en) A printing press with an ink transfer roller ink device and how to operate it
JP5080669B2 (en) Direct drive for processing machine drum
JP2003094606A (en) Method for controlling medium amount transferred between two rollers
CN208930909U (en) A kind of pressure regulation of interchangeable roller full rotating wheel printing machine and combined pressure device
US8794148B2 (en) Printing press
ATE521475T1 (en) METHOD FOR OPERATING A PRINTING PRESS
CN2635225Y (en) Coating machine
US10124572B2 (en) Method and device for adjusting contact pressure of intaglio printer wiping roller
US9168728B2 (en) Printing unit having a distributor roller with a separate drive motor and printing press having the printing unit
CN108569018B (en) Method for reducing quasi-static register differences in printing presses
US20100276873A1 (en) Moveable drive nip
CN206598620U (en) Flexible printing machine
CN102189749B (en) Device for turning pages during period of transporting page to pass through printer
CN101954777B (en) Drive clutch of dampening vibrator and ink vibrator on printing machine
CN103950283A (en) Leafrogging device for on-line cold foiling of printing machine
CN108839423A (en) A kind of pressure regulation of interchangeable roller full rotating wheel printing machine and combined pressure device
CN203805482U (en) Leafrogging device for printing machine online lettering
US20080257189A1 (en) Method for operating an inking system of a printing press
CN216761250U (en) Integrative frock of printing of cylinder coiled material and adopt color printing equipment of this frock
CN118003757A (en) Control of application roller of printing machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130522

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

R17P Request for examination filed (corrected)

Effective date: 20150320

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

17Q First examination report despatched

Effective date: 20151127

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20161215

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20170426