EP0537890A1 - Apparatus and method for providing a coating on a substrate - Google Patents

Apparatus and method for providing a coating on a substrate Download PDF

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Publication number
EP0537890A1
EP0537890A1 EP92307762A EP92307762A EP0537890A1 EP 0537890 A1 EP0537890 A1 EP 0537890A1 EP 92307762 A EP92307762 A EP 92307762A EP 92307762 A EP92307762 A EP 92307762A EP 0537890 A1 EP0537890 A1 EP 0537890A1
Authority
EP
European Patent Office
Prior art keywords
coating
substrate
smoothing
station
roller
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Withdrawn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
EP92307762A
Other languages
German (de)
English (en)
French (fr)
Inventor
Mary Ann Wehr
Frank Daniel Sager
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.)
NCR International Inc
Original Assignee
NCR International Inc
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 NCR International Inc filed Critical NCR International Inc
Publication of EP0537890A1 publication Critical patent/EP0537890A1/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme

Definitions

  • recording materials or receiver stocks which include a substrate and a coating thereon.
  • the coating enables data in the form of images to be transferred from a transfer medium and to be printed on the recording material or receiver stock to provide sharp and intense characters.
  • a common use of a coating applied to a substrate is in the field of thermal printing wherein a thermal print head causes transfer of coating material from a thermal transfer ribbon onto the receiving medium or stock.
  • a thermal print head causes transfer of coating material from a thermal transfer ribbon onto the receiving medium or stock.
  • a coated receiver stock was used to obtain sharp and complete characters.
  • One or more coatings were applied to a surface of the substrate in an attempt to make the surface smooth so that sharp and intense images could be thermally transferred onto the receiver stock from a thermal transfer ink ribbon.
  • the coating and the smoothing of the coating had to be accomplished as one or more operations separate from the finishing and converting operations such as die cutting punching and slitting.
  • the receiver stocks were commonly coated with compositions which included clay or carbonate, a binder and other additives.
  • one knowncomposition consisted essentially of 75% clay pigment and 25% latex binder.
  • a problem with these previous coatings was that the data printed on the receiver stock tended to smear because the surface of the receiver stock was not sufficiently absorbent to receive the thermally transferred ink from the thermal transfer ribbon.
  • Another problem with such receiving stocks having a rough or non-smooth surface was that the stocks had to be used in printers that kept the thermally transferred ink in a molten state long enough for the ink to "fill in” or cover the rough surface.
  • known coatings have a smoothness which is disadvantageously restricted and restrictive.
  • processing stations may include printing stations, coating application stations, and converting stations at which die cutting, punching, slitting, or perforating operations are performed in an in-line process.
  • U.S. Patent No. 4,581,278 discloses an imprinting device having a roller for a heat transfer laminate which is formed by a carrier and a coating
  • U.S. Patent No. 4,639,751 discloses an image-receiving sheet having a substrate and a coating comprising non-plate-shaped inorganic pigment and a binder
  • U.S. Patent No. 4,673,618, discloses a thermal recording medium having a coating which is homogeneous and smooth.
  • apparatus for coating a substrate comprising a printing press having at least one printing station for applying a coating to said substrate, at least one converting station located in series with said at least one printing station in a processing line, and means for transporting said substrate along said processing line, characterized by a smoothing station having roller means located downstream of said at least one printing station for engaging said coating and said substrate and adjustment means for selectively applying pressure thereto having regard to the thickness of the coating and the substrate.
  • a method of providing a coating on a substrate comprising passing laid substrate through printing press means arranged to apply said coating to said substrate, characterized by applying pressure to said coating by way of roller means so as to smooth the surface of said coating.
  • the present invention is directed to a method for improving the smoothness of a coating on receiver stock.
  • An example of a coating for which the apparatus and method of the present invention is applicable is disclosed in copending European patent application 92304089.3.
  • Fig. 1 there is shown a side elevational view in diagrammatic form of a printing press 10 wherein a web 12 of paper or like media is unwound from a mill roll 14 supported on an unwind stand 15.
  • the web 12 is trained around a compensating tension control unit 16 which includes rollers positioned in appropriate positions for controlling the tension in the web.
  • the web 12 moves past an edge guide sensing unit 18 and then through a plurality of print stations 20, 22, 24 and 26, as shown by the arrows, for printing images or data on the web.
  • the web 12 then continues through a plurality of diecut stations or converting stations 28, 30 and 32 which may punch, slit or perforate the web 12 at specific locations or positions on the web. Waste material of the web, as a result of the converting operations, is trained around a matrix roll 34 and the finished product is then trained onto a rewind roll 36. The waste material of the web 12, after the converting operations, is shown as a dash line 37.
  • the press 10 also includes a vertical perforating station 38 and a sheeter station 40. While the web 12 is shown as being trained around the several rolls of the vertical perforating station 38 and the sheeter station 40, the operations performed at either one or both of these stations are dependent upon the desired finished product. For example, it may be desirable to sheet the web 12 and rewind the finished product on the roll 36.
  • the press 10 is manufactured as Model 650 by Webtron Corporation, Fort Lauderdale, Florida.
  • Figs. 2 and 3 illustrate the mechanism and arrangement of the parts for the coating smoothing station.
  • the web 12 with a coating 42 (shown with a rough surface) is driven over a base roll 44 journaled on a shaft 46 and under a smoothing roll 48 journaled on a shaft 50.
  • a pressure transfer roll 52 (shown schematically as compared with Fig.3) is positioned above the smoothing roll 48 and has a pair of roller - type bearings 54 and 56 (Fig. 3) engageable with the surface of the smoothing roll 48 at the ends thereof.
  • the roller bearings 54 and 56 are supported on respective shafts 58 and 60.
  • a base roll gear 62 and a smoothing roll gear 64 are positioned to mesh for driving the base roll 44 and the smoothing roll 48 in the appropriate directions of rotation for advancing the web 12 in the direction, as shown by the arrow 66 in Fig. 2.
  • a pressure adjusting mechanism 70 (Fig. 2) is provided for bearing on the pressure transfer roll 52 and therethrough onto the smoothing roll 48 for adjusting the pressure for smoothing the coating 42 on the web 12.
  • the surface of the smoothing roll (48) is particularly adapted for smoothing the coated paper media and, as such, has a smooth surface itself.
  • the desired or required pressure is dependent upon the thickness of the substrate or web 12, the flow properties of the coating 42 and the degree of desired smoothness of the coating.
  • the pressure adjusting mechanism 70 includes a pair of screws 72 and 74 (Fig. 3) having shanks 76 and 78 extending through and threadedly engageable with a bridge 80 positioned over the pressure transfer roll 52.
  • a pair of knobs 82 and 84 are threadedly engageable with the shanks 76 and 78 of the screws 72 and 74 for holding or locking a precise position of the screws so as to maintain the desired or required pressure.
  • the web 12 included a 50 pound electronic data processing (EDP) receiver stock which was coated by means of a flexographic process to a coated weight of 3 pounds per 3300 square feet (1.36 kg per 306.57 square meters) of surface.
  • EDP electronic data processing
  • the coatings used in the process were identified as:
  • a method for smoothing a coating on a web in-line on a printing press while maintaining subsequent converting operations is a method for smoothing a coating on a web in-line on a printing press while maintaining subsequent converting operations.
  • the coating and/or inks are applied at the normal print stations and the web is trained through a nip at the location which is normally occupied by the first die-cut station of the printing press.
  • the nip is produced by inserting a solid roll identified as the smoothing roll 48, in place of a die and then using the pressure adjusting mechanism 70 for applying pressure and positioning the roll 48 in contact with the coating 42 on the web 12.
  • the pressure applied at the nip is controlled by the mechanism 70 which adjusts how tight the roll is brought into contact with the coating 42 on the web 12.
  • the pressure applied at the nip allows the above-described smoothing method to be used with various types of webs or substrates which include a tag stock wherein higher pressure levels can be applied, as well as pressure sensitive label stock wherein lower levels of pressure can be applied so as not to damage the facestock/adhesive/liner interfaces.
  • the web 12 with the smooth coating 90 is driven through the die-cutting stations for the normal or traditional converting operations. This smoothing operation of course, is different from a calendering operation wherein cloth or paper or like media are pressed between rollers for providing a gloss to the media.
  • the method employs a printing press and includes a pressure adjusted roller for smoothing the applied coating in an in-line operation without interfering with subsequent converting operations.
EP92307762A 1991-09-25 1992-08-26 Apparatus and method for providing a coating on a substrate Withdrawn EP0537890A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76561991A 1991-09-25 1991-09-25
US765619 1991-09-25

Publications (1)

Publication Number Publication Date
EP0537890A1 true EP0537890A1 (en) 1993-04-21

Family

ID=25074027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92307762A Withdrawn EP0537890A1 (en) 1991-09-25 1992-08-26 Apparatus and method for providing a coating on a substrate

Country Status (4)

Country Link
EP (1) EP0537890A1 (no)
JP (1) JPH05245430A (no)
FI (1) FI924270A (no)
NO (1) NO923711D0 (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115362064A (zh) * 2020-03-26 2022-11-18 东丽株式会社 印刷物的制造方法和印刷物

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7049953B2 (ja) * 2018-07-19 2022-04-07 東京エレクトロン株式会社 基板処理装置、基板処理方法及びコンピュータ読み取り可能な記録媒体

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391780A1 (fr) * 1977-05-27 1978-12-22 Mecalix Enduction Procede de lissage d'une couche de produit d'enduction deposee sur un support, dispositif de lissage mettant en oeuvre un tel procede, et machine d'enduction equipee d'un tel dispositif
US4574732A (en) * 1983-05-05 1986-03-11 Feco Engineered Systems, Inc. Overvarnish unit
EP0287404A2 (en) * 1987-04-16 1988-10-19 The Mead Corporation Pressure developer
US4929474A (en) * 1989-04-03 1990-05-29 Union Camp Corporation Method of making high quality extrusion coated paper for quality printing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391780A1 (fr) * 1977-05-27 1978-12-22 Mecalix Enduction Procede de lissage d'une couche de produit d'enduction deposee sur un support, dispositif de lissage mettant en oeuvre un tel procede, et machine d'enduction equipee d'un tel dispositif
US4574732A (en) * 1983-05-05 1986-03-11 Feco Engineered Systems, Inc. Overvarnish unit
EP0287404A2 (en) * 1987-04-16 1988-10-19 The Mead Corporation Pressure developer
US4929474A (en) * 1989-04-03 1990-05-29 Union Camp Corporation Method of making high quality extrusion coated paper for quality printing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPIL Section Ch, Week 8623, Derwent Publications Ltd., London, GB; Class F09, AN 86-146238 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115362064A (zh) * 2020-03-26 2022-11-18 东丽株式会社 印刷物的制造方法和印刷物
EP4129686A4 (en) * 2020-03-26 2023-10-11 Toray Industries, Inc. METHOD FOR PRODUCING PRINTED PRODUCTS AND PRINTED PRODUCTS

Also Published As

Publication number Publication date
NO923711D0 (no) 1992-09-24
JPH05245430A (ja) 1993-09-24
FI924270A0 (fi) 1992-09-23
FI924270A (fi) 1993-03-26

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