EP0899093A2 - Méthode et revêtement pour l'impression par électrocoagulation - Google Patents

Méthode et revêtement pour l'impression par électrocoagulation Download PDF

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Publication number
EP0899093A2
EP0899093A2 EP98116206A EP98116206A EP0899093A2 EP 0899093 A2 EP0899093 A2 EP 0899093A2 EP 98116206 A EP98116206 A EP 98116206A EP 98116206 A EP98116206 A EP 98116206A EP 0899093 A2 EP0899093 A2 EP 0899093A2
Authority
EP
European Patent Office
Prior art keywords
positive electrode
coating agent
ink
coating
coagulated ink
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.)
Granted
Application number
EP98116206A
Other languages
German (de)
English (en)
Other versions
EP0899093B1 (fr
EP0899093A3 (fr
Inventor
Adrien Castegnier
Normand Lepine
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.)
Toyo Ink Mfg Co Ltd
Original Assignee
Toyo Ink Mfg Co 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 Toyo Ink Mfg Co Ltd filed Critical Toyo Ink Mfg Co Ltd
Publication of EP0899093A2 publication Critical patent/EP0899093A2/fr
Publication of EP0899093A3 publication Critical patent/EP0899093A3/fr
Application granted granted Critical
Publication of EP0899093B1 publication Critical patent/EP0899093B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/105—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by electrocoagulation, by electro-adhesion or by electro-releasing of material, e.g. a liquid from a gel

Definitions

  • steps (b), (c) and (d-1) of the above electrocoagulation printing method are repeated several times to define a corresponding number of printing stages arranged at predetermined locations along the aforesaid path and each using a coloring agent of different color, and to thereby produce several differently colored images of coagulated ink which are transferred at the respective transfer positions onto the substrate in superimposed relation to provide a polychromic image.
  • the coating agent of the present invention which is produced by the aforementioned method is preferably a liquid under the usual operating condition, or more specifically, at the temperature range of from about 20 to about 60°C.
  • a coating agent having a form other than a liquid For example, when the coating agent of the present invention is a solid, a means is required to heat a means of applying the coating agent and/or the positive electrode surface.
  • the viscosity of the coating agent is preferably from about 100 to about 100,000 cps, or more preferably, from about 1,000 to about 30,000 cps at 30°C.
  • the viscosity of the coating agent can be appropriately controlled by changing the types and amount of the aforementioned silicon oxide and oily substance.
  • a coating agent with high viscosity can be obtained by using either an oil-soluble thickener produced by modifying dextrin or an oil-soluble resin such as ethyl cellulose.
  • step (c) of the above electrocoagulation printing method is carried out by:
  • any remaining non-coagulated ink is advantageously removed from the positive electrode surface, for example, the step (c) (iv) is carried out by scraping the surface with a soft rubber squeegee 11, as shown in Fig. 2, so as to fully uncover the coagulated ink.
  • the non-coagulated ink thus removed is collected and recirculated back to the aforesaid ink discharge unit.
  • the belt 17 with the coagulated ink retaining surface 171 thereof imprinted with the polychromic images 200 is guided so as to travel along a path extending in a plane intersecting the longitudinal axis of the positive electrode 3 at right angles, thereby exposing the coagulated ink retaining surface to permit contacting thereof by the web S.
  • the belt is preferably guided so as to travel along a horizontal path with the coagulated ink retaining surface facing downwardly, the support roller and pressure roller having rotation axes disposed in a plane extending perpendicular to the horizontal path.
  • a coating agent comprising 25.0% by weight of SILYSIA 530 (BET surface area: 500 m 2 /g) manufactured by Fuji Silysia Chemical Ltd. as the silicon oxide and 75.0% by weight of oleic acid as the oily substance was produced.
  • the viscosity of the coating agent was 3000 cps (30°C). Printing was performed in the same condition and method as in Example 1 except that the above coating agent was used.
  • Crater-like pitting with a diameter of from about 1 to about 2 mm was observed on the surface of the positive electrode after the printing was completed. Image density of the portion corresponding to the pitting on the surface of the positive electrode was reduced, providing printing matter with uneven density.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Duplication Or Marking (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP98116206A 1997-08-29 1998-08-27 Méthode et revêtement pour l'impression par électrocoagulation Expired - Lifetime EP0899093B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2214606 1997-08-29
CA 2214606 CA2214606C (fr) 1997-08-29 1997-08-29 Methode permettant d'empecher l'abrasion de l'electrode positive en cours d'impression par electrocoagulation

Publications (3)

Publication Number Publication Date
EP0899093A2 true EP0899093A2 (fr) 1999-03-03
EP0899093A3 EP0899093A3 (fr) 1999-04-28
EP0899093B1 EP0899093B1 (fr) 2002-03-13

Family

ID=4161397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116206A Expired - Lifetime EP0899093B1 (fr) 1997-08-29 1998-08-27 Méthode et revêtement pour l'impression par électrocoagulation

Country Status (4)

Country Link
EP (1) EP0899093B1 (fr)
JP (1) JPH11138984A (fr)
CA (1) CA2214606C (fr)
DE (1) DE69804175T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036653A2 (fr) * 1999-03-18 2000-09-20 Toyo Ink Manufacturing Co., Ltd. Encre d'impression par électrocoagulation et son emploi
US6859542B2 (en) 2001-05-31 2005-02-22 Sonion Lyngby A/S Method of providing a hydrophobic layer and a condenser microphone having such a layer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1153993A4 (fr) * 1999-11-18 2003-02-26 Toyo Ink Mfg Co Encre d'imprimerie electrocoagulante et son utilisation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5538601A (en) * 1995-09-14 1996-07-23 Elcorsy Inc. Electrocoagulation printing and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5538601A (en) * 1995-09-14 1996-07-23 Elcorsy Inc. Electrocoagulation printing and apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036653A2 (fr) * 1999-03-18 2000-09-20 Toyo Ink Manufacturing Co., Ltd. Encre d'impression par électrocoagulation et son emploi
EP1036653A3 (fr) * 1999-03-18 2001-03-07 Toyo Ink Manufacturing Co., Ltd. Encre d'impression par électrocoagulation et son emploi
US6406606B1 (en) 1999-03-18 2002-06-18 Toyo Ink Mfg. Co., Ltd. Electrocoagulation printing ink and method
EP1247646A3 (fr) * 1999-03-18 2003-07-02 Toyo Ink Manufacturing Co., Ltd. Encre d'impression par électrocoagulation et son emploi
US6859542B2 (en) 2001-05-31 2005-02-22 Sonion Lyngby A/S Method of providing a hydrophobic layer and a condenser microphone having such a layer
USRE40781E1 (en) 2001-05-31 2009-06-23 Pulse Mems Aps Method of providing a hydrophobic layer and condenser microphone having such a layer

Also Published As

Publication number Publication date
EP0899093B1 (fr) 2002-03-13
EP0899093A3 (fr) 1999-04-28
DE69804175T2 (de) 2002-09-26
CA2214606C (fr) 2002-11-19
DE69804175D1 (de) 2002-04-18
JPH11138984A (ja) 1999-05-25
CA2214606A1 (fr) 1999-02-28

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