EP0066176A1 - Solutions de mouillage pour impression lithographique offset - Google Patents

Solutions de mouillage pour impression lithographique offset Download PDF

Info

Publication number
EP0066176A1
EP0066176A1 EP82104326A EP82104326A EP0066176A1 EP 0066176 A1 EP0066176 A1 EP 0066176A1 EP 82104326 A EP82104326 A EP 82104326A EP 82104326 A EP82104326 A EP 82104326A EP 0066176 A1 EP0066176 A1 EP 0066176A1
Authority
EP
European Patent Office
Prior art keywords
glycol
water
fountain solution
ounce
solution
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
EP82104326A
Other languages
German (de)
English (en)
Other versions
EP0066176B1 (fr
Inventor
Richard Jude Burns
Friso George Willeboordse
Martin Frank Cohen
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Priority to AT82104326T priority Critical patent/ATE11117T1/de
Publication of EP0066176A1 publication Critical patent/EP0066176A1/fr
Application granted granted Critical
Publication of EP0066176B1 publication Critical patent/EP0066176B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Definitions

  • This invention is directed to an improved fountain solution suitable for use in a lithographic offset printing press, which solution contains a mixture of a polyol and/or glycol ether partially soluble in water and a polyol and/or glycol ether completely soluble in water.
  • Lithographic printing operations require the use of a dampening or fountain solution to achieve proper operation of the press so that good quality prints are obtained.
  • the fountain solution is generally a blend or mixture of water, acids, salts, solvents, and naturally occurring polymeric materials, such as gum arabic, and/or a variety of synthetic polymers.
  • the purpose of the fountain solution is to wet the non-image areas of a printing plate and thus prevent ink from depositing in these non-image areas. Should the ink deposit in the non-image area, a poor quality print results.
  • alcohols, especially isopropanol were used in fountain solutions up to 30 percent volume concentration levels to achieve best performance in operation of the press with attendant high quality prints.
  • the basis for using isopropyl alcohol resides partly in its ability to transport the fountain solution to the printing plate by means of the inked rollers in the press or through its own roller train.
  • U.S. Patent 3,877,372 describes an attempt to eliminate isopropanol from the fountain solution and use a mixture of butyl cellosolve, a silicone glycol copolymer, and a defoamer.
  • a commercially available fountain solution utilizes 2-ethyl-1,3-hexanediol as a replacement for isopropyl alcohol to provide an isopropyl alcohol free fountain solution.
  • the use of 2-ethyl-1,3-hexanediol eliminates the toxic and flammable properties associated with isopropyl alcohol containing fountain solutions.
  • fountain solutions containing the 2-ethyl-l,3-hexanediol provide a high quality printed product on a lithographic press.
  • Tinting is the deposition of minute ink droplets in the non-image area of the print resulting in the appearance of a light tint.
  • Banding is the appearance of narrow dark streaks in the print.
  • the fountain solution contains between about 0.5 and about 10 percent by volume of the mixture.
  • the mixture of polyols and/or glycol ethers which is suitable for use in this invention include a polyol and/or glycol which is partially soluble in water, such as 2-ethyl-1,3-hexanediol, Esterdiol-204, i.e., HOCH2C(CH3)2CH20COC(CH3)2CH20H, Hexyl Cellosolve, i.e., C 6 H 13 0CH 2 CH 2 0H, Hexyl Carbitol, i.e., C 6 H 13 O(C 2 H 4 O) 2 H, and the like.
  • the polyol and/or glycol ethers which is completely soluble in water such as 2-ethyl-1,3-hexanediol, Esterdiol-204, i.e., HOCH2C(CH3)2CH20COC(CH3)2CH20H, Hexyl Cellosolve, i.e., C
  • the fountain solutions are preferably used as aqueous acidic solutions.
  • Phosphoric acid is a preferred acid for use in acidifying the formulation.
  • Other acids which can be used include inorganic as well as organic acids, such as acetic acid, nitric acid, hydrochloric acid, and the like.
  • a buffering agent, such as ammonium acetate can also be included.
  • the fountain solution is generally maintained at a pH of from about 2 to about 5.
  • the particular pH at which a given solution will be maintained will depend upon factors, such as the type of water-soluble polymer used, other ingredients in the solution as well as the type of substrate employed in the lithographic printing plate, and the like.
  • additives which may be used in the fountain solution include preservatives such as phenol, sodium salicylate, and the like; corrosion inhibitors such as ammonium bichromate, magnesium nitrate, zinc nitrate, and the like; hardeners, such as chromium aluminum, and the like; organic solvents, such as cyclic ethers, e.g., 4-butyrolactone, and the like; low molecular weight aldehydes, such as formaldehyde, glutaraldehyde, and the like. These additives are generally used in amounts of from about 0.1 to about 10 percent by volume.
  • the fountain solution was used on a 25 inch production size press with a Dahlgren recirculating dampening system.
  • the press was run with the damper set at speeds of 40, 50 and 60 running approximately 200 sheets of paper at each setting.
  • the optical density of sheets was measured at each setting. These optical density measurements were made with an Optical Densitometer.
  • a scum cycle test was performed. In this test the fountain solution feed was momentarily stopped to allow the plate to become completely coated with ink. Then the fountain solution feed was started and the number of revolutions of the plate before it was cleaned of excess ink was recorded. Further, visual observations were made of the print to determine the appearance of tinting and banding.
  • the formulation yielded a 1 volume percent concentration of 2-ethyl-l,3-hexanediol and a 5 volume percent concentration of propylene glycol.
  • fountain solutions were prepared using 2-ethyl-1,3-hexanediol and propylene glycol where the concentration of propylene glycol was varied.
  • the formulation yielded a 2 volume percent concentration of propylene glycol.
  • Example 5 was exactly repeated except that 5.2 ounces of propylene glycol were used. The formulation yielded a 4 volume percent concentration of the glycol.
  • Example 5 was exactly repeated except that 7.8 ounces of propylene glycol were used. The formulation yielded a 6 volume percent concentration of the glycol.
  • Example 5 was exactly repeated except that 10.4 ounces of'propylene glycol were used. The formulation yielded an 8 volume concentration of the glycol.
  • Example 5 was exactly repeated except that 13.0 ounces of propylene glycol were used. The formulation yielded a 10 volume concentration of the glycol.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)
  • Paper (AREA)
EP82104326A 1981-05-18 1982-05-17 Solutions de mouillage pour impression lithographique offset Expired EP0066176B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82104326T ATE11117T1 (de) 1981-05-18 1982-05-17 Feuchtwasser fuer lithographische offsetdruckverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26407681A 1981-05-18 1981-05-18
US264076 1981-05-18

Publications (2)

Publication Number Publication Date
EP0066176A1 true EP0066176A1 (fr) 1982-12-08
EP0066176B1 EP0066176B1 (fr) 1985-01-09

Family

ID=23004465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104326A Expired EP0066176B1 (fr) 1981-05-18 1982-05-17 Solutions de mouillage pour impression lithographique offset

Country Status (6)

Country Link
EP (1) EP0066176B1 (fr)
JP (1) JPS57199693A (fr)
AT (1) ATE11117T1 (fr)
CA (1) CA1174011A (fr)
DE (1) DE3261826D1 (fr)
MX (1) MX156658A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091601A2 (fr) * 1982-03-29 1983-10-19 Union Carbide Corporation Solution de mouillage
EP0249751A2 (fr) * 1986-06-16 1987-12-23 Hoechst Celanese Corporation Solution de mouillage pour lithographie contenant un mélange de polyols
EP0411883A1 (fr) * 1989-08-02 1991-02-06 Fuji Photo Film Co., Ltd. Solution de mouillage pour l'impression offset
EP0412455A1 (fr) * 1989-08-05 1991-02-13 Kao Corporation Solution de mouillage pour l'impression offset
WO1992019455A1 (fr) * 1991-04-25 1992-11-12 Heidelberger Druckmaschinen Ag Humecteur utilisable en impression offset
US6488754B2 (en) 2000-11-29 2002-12-03 Grain Processing Corporation Lithographic dampening solution and method for dampening a lithographic plate
EP1688266A1 (fr) 2005-02-03 2006-08-09 Fuji Photo Film B.V. Procédé et mélange de solvants pour améliorer le mouillage de plaques de l'impression lithographique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5714302A (en) * 1993-01-26 1998-02-03 Mitsubishi Paper Mills Limited Method of printing with using lithographic printing plate made by silver complex diffusion transfer process and using dampening composition containing nonionic surface active agent
JP2001138656A (ja) * 1999-11-10 2001-05-22 Fuji Photo Film Co Ltd 平版印刷用濃縮湿し水組成物
JP2003170673A (ja) 2001-09-28 2003-06-17 Fuji Photo Film Co Ltd 平版印刷版用湿し水組成物及び平版印刷方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2248606A1 (de) * 1971-10-08 1973-04-19 Mitsubishi Paper Mills Ltd Benetzende fluessige zusammensetzung fuer eine offset-druckplatte
DE2337125A1 (de) * 1973-07-20 1975-01-30 Kodak Ag Feuchtwasserkonzentrat fuer den offsetdruck
US3877372A (en) * 1973-12-03 1975-04-15 Kenneth W Leeds Treatment of a printing plate with a dampening liquid
US4278467A (en) * 1978-09-11 1981-07-14 Graphic Arts Technical Foundation Substitutive additives for isopropyl alcohol in fountain solution for lithographic offset printing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129441A (en) * 1974-08-23 1976-03-12 Nippon Synthetic Chem Ind Guriokishirusanno seizohoho
JPS54138703A (en) * 1978-04-19 1979-10-27 Dainippon Printing Co Ltd Moistening composite substance for flat printing plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2248606A1 (de) * 1971-10-08 1973-04-19 Mitsubishi Paper Mills Ltd Benetzende fluessige zusammensetzung fuer eine offset-druckplatte
DE2337125A1 (de) * 1973-07-20 1975-01-30 Kodak Ag Feuchtwasserkonzentrat fuer den offsetdruck
US3877372A (en) * 1973-12-03 1975-04-15 Kenneth W Leeds Treatment of a printing plate with a dampening liquid
US4278467A (en) * 1978-09-11 1981-07-14 Graphic Arts Technical Foundation Substitutive additives for isopropyl alcohol in fountain solution for lithographic offset printing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091601A2 (fr) * 1982-03-29 1983-10-19 Union Carbide Corporation Solution de mouillage
EP0091601A3 (fr) * 1982-03-29 1984-02-01 Union Carbide Corporation Solution de mouillage
EP0249751A2 (fr) * 1986-06-16 1987-12-23 Hoechst Celanese Corporation Solution de mouillage pour lithographie contenant un mélange de polyols
EP0249751A3 (fr) * 1986-06-16 1988-03-23 Hoechst Celanese Corporation Solution de mouillage pour lithographie contenant un mélange de polyols
EP0411883A1 (fr) * 1989-08-02 1991-02-06 Fuji Photo Film Co., Ltd. Solution de mouillage pour l'impression offset
US5064749A (en) * 1989-08-02 1991-11-12 Fuji Photo Film Co., Ltd. Dampening water composition for lithographic plate
EP0412455A1 (fr) * 1989-08-05 1991-02-13 Kao Corporation Solution de mouillage pour l'impression offset
WO1992019455A1 (fr) * 1991-04-25 1992-11-12 Heidelberger Druckmaschinen Ag Humecteur utilisable en impression offset
US6488754B2 (en) 2000-11-29 2002-12-03 Grain Processing Corporation Lithographic dampening solution and method for dampening a lithographic plate
EP1688266A1 (fr) 2005-02-03 2006-08-09 Fuji Photo Film B.V. Procédé et mélange de solvants pour améliorer le mouillage de plaques de l'impression lithographique

Also Published As

Publication number Publication date
CA1174011A (fr) 1984-09-11
MX156658A (es) 1988-09-22
EP0066176B1 (fr) 1985-01-09
DE3261826D1 (en) 1985-02-21
ATE11117T1 (de) 1985-01-15
JPH0446760B2 (fr) 1992-07-30
JPS57199693A (en) 1982-12-07

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