US3108535A - Fountain solution and cleansing agent for the offset printing process - Google Patents

Fountain solution and cleansing agent for the offset printing process Download PDF

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Publication number
US3108535A
US3108535A US152164A US15216461A US3108535A US 3108535 A US3108535 A US 3108535A US 152164 A US152164 A US 152164A US 15216461 A US15216461 A US 15216461A US 3108535 A US3108535 A US 3108535A
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US
United States
Prior art keywords
offset printing
phosphonic acid
fountain solution
printing process
water
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.)
Expired - Lifetime
Application number
US152164A
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English (en)
Inventor
Uhlig Fritz
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.)
Azoplate Corp
Original Assignee
Azoplate 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 Azoplate Corp filed Critical Azoplate Corp
Application granted granted Critical
Publication of US3108535A publication Critical patent/US3108535A/en
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
    • 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

  • wetting agents that are not exclusively water but which also contain additives
  • metal salts in the fountain solution after prolonged contact with the printing plate, cause undesirable crystal formation thereon.
  • aqueous solutions of multivalent alcohols are to be used, relatively high concentrations are necessary which are considerably affected by temperature and atmospheric humidity and give sticky prints.
  • colloids such as soluble starch, gu-m arab-ic and other vegetable gums as fountain solution additives, the fact that these provide excellent culture media for fungi and bacteria is a disadvantage.
  • Offset fountain solutions of this type are also known as anti-scumming agents.
  • the present invention relates to fountain solutions and cleansing agents for the offset printing process which include a monomeric and/or polymeric vinyl phosphonic acid. When they are used, excellent prints are obtained.
  • Vinyl phosphonic acid and polymers thereof render metal surfaces-particularly of aluminum-used as print carriers in offset printing water acceptant to a much greater extent than, for example, does the much used orthophosphoric acid.
  • This action by which water acceptance is improved is, at the same time, a cleaning process, by which the metal surfaces are cleansed of any oily or greasy contaminations.
  • Cleansing agents hitherto known are dispersions and contain a number of non-homogeneous substances, as is the case, for example, with the dispersion described in US. Patent No. 2,780,168, which serves as a cleansing agent for greasy printing plates and contains, in
  • the aqueous phase thereof monovalent and multivalent alcohols and a colloidal dispersion of silicic acid and; in the nonaque'ous phase thereof, there are preferably contained petroleum ethers.
  • the fountain solution of the invention is obtained in a simple manner by the solution in water of vinyl phosphonic acid or polyvinyl phosphonic acid or of mixtures thereof; they dissolve readily.
  • Fountain solutions with even very low concentrations of phosphonic acid, e.g.,' 0.0001 by weight give good results in offset printing.
  • the use of fountain solutions in which there is a 0.0 01 to 0.1% concentration of vinyl phosphonic or polyvinyl phosphonic acid is recommended.
  • additives for the removal of greasy and oily patches from metal printing plates, higher concentrations are advantageously used, e. g., from 0.1 to 10% by weight of vinyl phosphonic acid and/ or polyvinyl phosphonic acid in water.
  • additives can be included in the fountain solution of the invention, including those which are already known as fountain solution additives.
  • additional water soluble or water miscible additives are: ammonium phosphate, citric acid salts, glycerine and other alcohols, polyglycols, dextrins, alginates, carboxymethyl celluloses and vegetable gums. One or more of these may be added to the fountain solution of the invention.
  • Example I A very suitable fountain solution and cleansing liquid for use in offset printing processes is prepared from 999 ml. of water 1' g. of polyvinyl phosphoric acid 1.0 mg. of Thymol Blue dyestutf.
  • Example I A fountain solution for offset printing is prepared from 300 ml. of water 700 ml. of glycerine 0.5 g. of vinyl phosphonic acid 0.5 g. of polyvinyl phosphonic acid.
  • the solution can be used undiluted as a cleansing agent for printing foils. If the mixture is diluted with water to ten times its volume, a very good fountain solutionfor offset printing is obtained. Formaldehyde or other disinfectant can be added to the diluted solution.
  • Example III A fountain solution for offset printing is obtained from 965 m1. of water 35 ml. of glycerine 0.01 g. of vinyl phosphonic acid 1.0 g. of ammonium phosphate.
  • Example IV A good fountain solution for offset printing is obtained if 5 g. of tertiary sodium citrate are added to the mixture described in Example II and homogeneously distributed therein.
  • the improvement which comprises dampening the printing plate with a fountain solution comprising an aqueous solution of a member of the group consisting of vinyl phosphonic acid, polyvinyl phosphonic acid, and mixtures thereof.
  • a process for cleaning a printing plate which comprises treating the plate with 'an aqueous solution of a 10 2,988,988

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Detergent Compositions (AREA)
US152164A 1961-01-13 1961-11-14 Fountain solution and cleansing agent for the offset printing process Expired - Lifetime US3108535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK42633A DE1121632B (de) 1961-01-13 1961-01-13 Feucht- und Reinigungsmittel fuer das Offstdruckverfahren

Publications (1)

Publication Number Publication Date
US3108535A true US3108535A (en) 1963-10-29

Family

ID=7222823

Family Applications (1)

Application Number Title Priority Date Filing Date
US152164A Expired - Lifetime US3108535A (en) 1961-01-13 1961-11-14 Fountain solution and cleansing agent for the offset printing process

Country Status (6)

Country Link
US (1) US3108535A (xx)
CH (1) CH415700A (xx)
DE (1) DE1121632B (xx)
FR (1) FR1310278A (xx)
GB (1) GB952411A (xx)
NL (2) NL273144A (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289577A (en) * 1962-01-11 1966-12-06 Azoplate Corp Wetting and cleansing agent for use in offset printing
US3309990A (en) * 1961-01-25 1967-03-21 Azoplate Corp Process for the preparation of printing plates
US4446028A (en) * 1982-12-20 1984-05-01 Betz Laboratories, Inc. Isopropenyl phosphonic acid copolymers used to inhibit scale formation
US4446046A (en) * 1981-06-17 1984-05-01 Betz Laboratories, Inc. Poly (alkenyl) phosphonic acid and methods of use thereof
US4458005A (en) * 1981-07-06 1984-07-03 Hoechst Aktiengesellschaft Polyvinylmethylphosphinic acid, process for its manufacture and use
US4504406A (en) * 1983-02-22 1985-03-12 American Hoechst Corporation Cleansing agent for printing plates
US4764213A (en) * 1986-06-16 1988-08-16 Hoechst Celanese Corporation Lithographic fountain solution containing mixed colloids
US4970138A (en) * 1987-12-24 1990-11-13 Basf Aktiengesellschaft Damping solution for offset printing
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
US20020106585A1 (en) * 2000-11-21 2002-08-08 Agfa-Gevaert Method of lithographic printing with a reusable substrate
US6701843B2 (en) * 2000-09-18 2004-03-09 Agfa-Gevaert Method of lithographic printing with a reusable substrate
CN113459697A (zh) * 2021-08-10 2021-10-01 中山市富日印刷材料有限公司 一种防钙化型免酒精润版液及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2855393A1 (de) * 1978-12-21 1980-07-03 Hoechst Ag Verfahren zum herstellen von flachdruckformen
DE3006094A1 (de) * 1980-02-19 1981-08-20 Hoechst Ag, 6000 Frankfurt Verfahren zum konservieren von flachdruckformen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534650A (en) * 1947-05-09 1950-12-19 Warren S D Co Planographic printing plate and method of making same
US2988988A (en) * 1957-03-18 1961-06-20 Haloid Xerox Inc Method of etching and dampening planographic printing plates and fountain solution therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534650A (en) * 1947-05-09 1950-12-19 Warren S D Co Planographic printing plate and method of making same
US2988988A (en) * 1957-03-18 1961-06-20 Haloid Xerox Inc Method of etching and dampening planographic printing plates and fountain solution therefor

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309990A (en) * 1961-01-25 1967-03-21 Azoplate Corp Process for the preparation of printing plates
US3289577A (en) * 1962-01-11 1966-12-06 Azoplate Corp Wetting and cleansing agent for use in offset printing
US4446046A (en) * 1981-06-17 1984-05-01 Betz Laboratories, Inc. Poly (alkenyl) phosphonic acid and methods of use thereof
US4458005A (en) * 1981-07-06 1984-07-03 Hoechst Aktiengesellschaft Polyvinylmethylphosphinic acid, process for its manufacture and use
US4446028A (en) * 1982-12-20 1984-05-01 Betz Laboratories, Inc. Isopropenyl phosphonic acid copolymers used to inhibit scale formation
US4504406A (en) * 1983-02-22 1985-03-12 American Hoechst Corporation Cleansing agent for printing plates
US4764213A (en) * 1986-06-16 1988-08-16 Hoechst Celanese Corporation Lithographic fountain solution containing mixed colloids
US4970138A (en) * 1987-12-24 1990-11-13 Basf Aktiengesellschaft Damping solution for offset printing
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
US6701843B2 (en) * 2000-09-18 2004-03-09 Agfa-Gevaert Method of lithographic printing with a reusable substrate
US20020106585A1 (en) * 2000-11-21 2002-08-08 Agfa-Gevaert Method of lithographic printing with a reusable substrate
US6893798B2 (en) * 2000-11-21 2005-05-17 Agfa-Gevaert Method of lithographic printing with a reusable substrate
CN113459697A (zh) * 2021-08-10 2021-10-01 中山市富日印刷材料有限公司 一种防钙化型免酒精润版液及其制备方法

Also Published As

Publication number Publication date
NL273144A (xx)
CH415700A (de) 1966-06-30
FR1310278A (xx) 1963-03-06
GB952411A (en) 1964-03-18
NL129715C (xx)
DE1121632B (de) 1962-01-11

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