EP0389252A2 - Druckverfahren - Google Patents

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Publication number
EP0389252A2
EP0389252A2 EP90303004A EP90303004A EP0389252A2 EP 0389252 A2 EP0389252 A2 EP 0389252A2 EP 90303004 A EP90303004 A EP 90303004A EP 90303004 A EP90303004 A EP 90303004A EP 0389252 A2 EP0389252 A2 EP 0389252A2
Authority
EP
European Patent Office
Prior art keywords
printing
varnish
paper
violet
ultra
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Withdrawn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
EP90303004A
Other languages
English (en)
French (fr)
Other versions
EP0389252A3 (de
Inventor
John Murray
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0389252A2 publication Critical patent/EP0389252A2/de
Publication of EP0389252A3 publication Critical patent/EP0389252A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5209—Coatings prepared by radiation-curing, e.g. using photopolymerisable compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0045—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma

Definitions

  • the present invention relates to printing and is concerned particularly, but not exclusively, with newspaper, magazine and other continuous printing processes.
  • the traditional technique for newspaper printing has been by the Letterpress (Relief) process in which an image is printed direct from type or other relief surfaces onto a paper surface.
  • the paper is in the form of a continuous web which is passed over an impression cylinder beneath a curved printing plate carried on a printing cylinder.
  • the ink used is a mixture of mineral oil and carbon and is impressed on the moving paper web as it passes between the printing plate and the impression cylinder.
  • the paper is absorbent and a form of drying takes place in which the oil is mostly absorbed into the paper, leaving a small amount of oil on the surface which binds the carbon pigment to the paper.
  • the latest printing presses usually use the Web Offset (Planographic) technique wherein the image is not printed direct from the plate to the paper but is first transferred to an intermediate blanket cylinder carrying a blanket (usually of rubber) which then transfers (offsets) the image to the paper.
  • Cold set inks are again used and a similar form of drying takes place as in the case of Letterpress printing, so that a dull non-­gloss result is obtained.
  • U.V. inks are also known which dry instantly on exposure to ultra-violet (U.V.) light.
  • U.V. ultra-violet
  • their use for large scale web printing has not been adopted due principally to the very high ink costs resulting from the amount of such inks which must be used because of the absorbency of the paper web.
  • a method of printing paper using ultra-violet (U.V.) inks which are dried by passage past one or more drying means, or using other ink or inks which can be acceptably dried characterized in that, prior to printing, an ultra-violet (U.V.) varnish is applied to the whole of or to one or more selected parts of, the paper to be printed and is hardened by passage past one or more U.V. lamps.
  • U.V. ultra-violet
  • an apparatus for printing paper including means for conveying the paper through the printing process, at least one printing unit for applying to the paper ultra-violet (U.V.) ink or other ink or inks which can be acceptably dried and a means for drying the ink applied by the printing unit, characterized in that the apparatus further includes an ultra-violet (U.V.) varnish applicator for applying ultra-violet (U.V.) varnish to the whole of, or to one or more selected parts of, the paper to be printed and one or more U.V. lamps for drying the U.V. varnish applied by the U.V. varnish applicator before the paper is printed by the printing units.
  • U.V. ultra-violet
  • the printing apparatus shown highly diagrammatically in Figure 1 is of the offset lithographic type for colour printing newspapers, magazines and the like.
  • a web 10 is drawn over a rotating impression cylinder 12.
  • Four cylindrical printing plates 14a, 14b, 14c, 14d are arranged around the impression cylinder 12 and are adapted to apply coloured inks selectively to the web 10 by way of respective cylindrical blankets 16a, 16b, 16c, 16d, usually made of rubber, in a normal manner, which need not be described in detail herein.
  • the apparatus is conventional.
  • an ultra-violet (U.V.) varnish applicator 18 which is adapted to apply U.V. varnish (a resin based varnish which includes a photo-initiator which reacts to U.V. light and cures the varnish) across the whole of the paper web 10 or across a selected part or parts of same.
  • the applicator comprises a printing roll 21a and backing roll 21b.
  • a U.V. lamp 19 Downstream of the applicator rolls of the U.V. applicator 18 there is positioned a U.V. lamp 19 by which the U.V. varnish applied to the web 10 by the applicator 18 can be dried instantly.
  • the varnish applied to the web 10 is such as to eliminate the absorbency of the paper, either entirely or in the selected areas to which it has been applied, for example in areas of the paper which require full colour illustrations.
  • the varnish may be clear or tinted, for example tinted with white.
  • the U.V. applicator 18 can apply the varnish to the web in any convenient manner, e.g. by printing (as in Fig. 1) or spraying (as in Fig. 2).
  • U.V. lamp 19 After the varnish has been hardened by the U.V. lamp 19, the web is printed in the normal way on top of the varnished areas by the printing plates 14 and offset blankets 16, but using U.V. inks (a standard resin based ink which includes a photoinitiator which reacts to U.V. light and cures the ink).
  • U.V. inks a standard resin based ink which includes a photoinitiator which reacts to U.V. light and cures the ink.
  • a further U.V. lamp 20 is positioned downstream of the printing plates 14. Since the inks used for printing by the plates 14 are of the U.V. type, they are dried instantly by exposure to the ultra-violet light (U.V.) from the lamp 20.
  • the U.V. varnish is sprayed on by a spray applicator 22 supplied by a reservoir 17.
  • the sprayed areas can be controlled in accordance with conventional techniques to achieve a desired varnish pattern.
  • the method of applying U.V. varnish to the paper before printing is adapted to sheet printing using a sheet fed printing press.
  • sheets 24 are fed in register from a feeder 25 into the printing press where a different coloured ink is selectively applied to each sheet by printing units 26a, 26b, 26c, 26d, before being passed to a point of delivery 28.
  • U.V. varnish can be applied in accordance with the present method by the U.V. applicator 18 and dried (cured) by the U.V. lamp 19 both disposed upstream of the printing units 26a, 26b, 26c, 26d.
  • a further U.V. varnish applicator 30 can optionally be disposed downstream of the printing units 26a, 26b, 26c, 26d in order to apply U.V. varnish to the surface of the printed sheet or selective areas thereof.
  • the U.V. varnish is cured by the U.V. lamp 20 before the sheet is finally delivered to the delivery point 28. Applying U.V. varnish after printing enhances the quality of the final print.
  • a further type of sheet fed printing press is illustrated wherein instead of the four separate printing units 26a, 26b, 26c, 26d the coloured ink is applied by two printing units 32a, 32b with a U.V.. lamp 34 disposed upstream of the printing units 32a, so as to cure the ink before selective printing by the printing unit 32b.
  • U.V. varnish can again be applied by the present method by having the U.V. applicator 18 and U.V. lamp 19 disposed upstream of the printing units 32a, 32b, so that U.V. varnish is applied to the paper and cured before the paper is printed on.
  • the method can be used on any type of paper and, as a result of the U.V. varnish providing a hard, smooth, non-absorbent surface on which to print, an improvement in printing quality, gloss finish and a saving on the amount of ink used, will ensue.
  • the present invention can equally well be used in connection with other types of printing, such as Relief printing, Planographic printing, Intaglio printing and Silk-Screen printing.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Methods (AREA)
EP19900303004 1989-03-22 1990-03-20 Druckverfahren Withdrawn EP0389252A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8906670 1989-03-22
GB8906670A GB8906670D0 (en) 1989-03-22 1989-03-22 Printing method

Publications (2)

Publication Number Publication Date
EP0389252A2 true EP0389252A2 (de) 1990-09-26
EP0389252A3 EP0389252A3 (de) 1991-10-23

Family

ID=10653866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900303004 Withdrawn EP0389252A3 (de) 1989-03-22 1990-03-20 Druckverfahren

Country Status (2)

Country Link
EP (1) EP0389252A3 (de)
GB (1) GB8906670D0 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278314A (en) * 1993-05-28 1994-11-30 Terry John Wood A printing process
WO1996029205A1 (en) * 1995-03-21 1996-09-26 Lundgren Claes G L Coating in connection with printing and coating composition with barrier properties
EP1466754A3 (de) * 2003-04-11 2004-11-17 Dainippon Screen Mfg. Co., Ltd. Verfahren zum Aufbringen einer Beschichtung und Vorrichtung zum Aufbringen einer Beschichtung auf Ausdrucken, und eine Druckmaschine mit dieser Vorrichtung zum Aufbringen einer Beschichtung
DE102004002132A1 (de) * 2004-01-15 2005-08-11 Man Roland Druckmaschinen Ag Einrichtung zur Erzeugung einer Beschichtung von Druckprodukten einer Druckmaschine
WO2005100037A1 (en) * 2004-03-31 2005-10-27 Eastman Kodak Company Treating preprinted media to improve toner adhesion
CN114393941A (zh) * 2021-12-30 2022-04-26 星光印刷（苏州）有限公司 一种环保转印膜的转印方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151945A (en) * 1983-12-29 1985-07-31 Sanyo Kokusaku Pulp Co Recording sheets

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151945A (en) * 1983-12-29 1985-07-31 Sanyo Kokusaku Pulp Co Recording sheets

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278314A (en) * 1993-05-28 1994-11-30 Terry John Wood A printing process
WO1996029205A1 (en) * 1995-03-21 1996-09-26 Lundgren Claes G L Coating in connection with printing and coating composition with barrier properties
EP1466754A3 (de) * 2003-04-11 2004-11-17 Dainippon Screen Mfg. Co., Ltd. Verfahren zum Aufbringen einer Beschichtung und Vorrichtung zum Aufbringen einer Beschichtung auf Ausdrucken, und eine Druckmaschine mit dieser Vorrichtung zum Aufbringen einer Beschichtung
US7207269B2 (en) 2003-04-11 2007-04-24 Dainippon Screen Mfg. Co., Ltd. Coating material applying method and coating material applying apparatus for applying a coating material to surfaces of prints, and a printing machine having the coating material applying apparatus
DE102004002132A1 (de) * 2004-01-15 2005-08-11 Man Roland Druckmaschinen Ag Einrichtung zur Erzeugung einer Beschichtung von Druckprodukten einer Druckmaschine
WO2005100037A1 (en) * 2004-03-31 2005-10-27 Eastman Kodak Company Treating preprinted media to improve toner adhesion
CN114393941A (zh) * 2021-12-30 2022-04-26 星光印刷（苏州）有限公司 一种环保转印膜的转印方法
CN114393941B (zh) * 2021-12-30 2023-08-18 星光印刷（苏州）有限公司 一种转印膜的转印方法

Also Published As

Publication number Publication date
EP0389252A3 (de) 1991-10-23
GB8906670D0 (en) 1989-05-04

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