CA1174011A - Fountain solutions suitable for use in lithographic offset printing - Google Patents
Fountain solutions suitable for use in lithographic offset printingInfo
- Publication number
- CA1174011A CA1174011A CA000402616A CA402616A CA1174011A CA 1174011 A CA1174011 A CA 1174011A CA 000402616 A CA000402616 A CA 000402616A CA 402616 A CA402616 A CA 402616A CA 1174011 A CA1174011 A CA 1174011A
- Authority
- CA
- Canada
- Prior art keywords
- glycol
- water
- ounce
- fountain solution
- 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.)
- Expired
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
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Printing Methods (AREA)
- Paper (AREA)
Abstract
?159 FOUNTAIN SOLUTIONS SUITABLE FOR USE IN
LITHOGRAPHIC OFFSET PRINTING
ABSTRACT OF THE DISCLOSURE
Described herein is an improved fountain solution suitable for use in a lithographic offset printing press which solution contains a mixture o a polyol and/or glycol ether partially soluble in water and a polyol and/or glycol ether completely soluble in water.
S P E C I F I C A T I O N
LITHOGRAPHIC OFFSET PRINTING
ABSTRACT OF THE DISCLOSURE
Described herein is an improved fountain solution suitable for use in a lithographic offset printing press which solution contains a mixture o a polyol and/or glycol ether partially soluble in water and a polyol and/or glycol ether completely soluble in water.
S P E C I F I C A T I O N
Description
~ -`` 1174011 This invention is directed to an improved fountain solution suitable for use in a lithographic offset printing press, which solution contains a mix-ture 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 natur-ally 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.
Traditionally, alcohols, especially isopropanol, were used in fountain solutions up to 30 percent volume con-centration levels to achieve best performance in opera-tion 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 throu~h its own roller train. This pro-perty has been attrlbuted to the low surfa_e tension of the aqueous solution containing the isopropyl alcohol.
This- allows the fountain solution to wet and mi~ with the ink in the Dahlgren system or to keep ink and
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 natur-ally 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.
Traditionally, alcohols, especially isopropanol, were used in fountain solutions up to 30 percent volume con-centration levels to achieve best performance in opera-tion 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 throu~h its own roller train. This pro-perty has been attrlbuted to the low surfa_e tension of the aqueous solution containing the isopropyl alcohol.
This- allows the fountain solution to wet and mi~ with the ink in the Dahlgren system or to keep ink and
2.
1~'74011 fountain solution separate as in lithographic presses with conventional dispersin~ systems. However, when the fountain solution is transported by the rollers in the form of a thin film, volatile components, especially the alcohol, are lost. Aside from the cost considerations in losing the alcohol by evaporation, safety considera-tions urge against its use. Thus, it is desirable to find a substitute for the volatile alcohol which does not have the problems associatéd with using iso-propyl alcohol~
U.S. Patent 3,877,372 describes an attempt to eliminate isopropanol from the fountain solution and use a mixture of butyl ¢elloso? ~, 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 pro-perties associated with isopropyl alcohol containing fountain solutions. Also, fountain solutions con~ain-ing the 2-ethyl-1,3-hexanediol provide a high quality printed product on a lithographic press.
However, it has been found that in using the 2-ethyl-1,3-hexanediol containing fountain solu-tions, the appearance of tinting and/or banding in the print is observed in many instances. Tinting is the deposition of minute ink droplets in the non-image area of the print resuLt~ng in the appearance of a light tint. Banding is the appearance of narrow dark streaks 4()11 in the print. Thus, there is a desire to develop a non-isopropyl alcohol containing fountain solution whose use would substantially eliminate the appearance of tlnting and/or banding in a print.
DESCRIPTION OF THE INVENTION
It has now been found that when a mixture of a polyol and/or glycol ether partially soluble in water arld a polyol and/or glycol ether completely soluble in water is used in a fountain solution; tinting and/or banding-in the resulting print is substantially reduced and in many instances eliminated.
The use of such a mixture as a replacement for isopropyl alcohol eliminates the toxic and flam-mable properties of conventional isopropyl alcohol-containing fountain solutions and provides a fountain solution that has the other desirable properties which provide a high quality printed product on a lithographic plate.
~ he fountain solution contains between about '0 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., HOCH2CCCH3~2CH2OCOC(CH3)2CH2OH, Hexyl Cello-solve~ i.e., C6H13OCH2CH2OH, Hexyl Carbitol~ i.e., C6H13OCC2H4O~2H, and the like. The polyol and/or glycol ethers which is completely soluble in water 4.
1i74Vll includes, for exEmple, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, hexylene glycol, triethylene glycol, tetraethylene glycol, tr -- propylene glycol, 1,5-pentanediol, methyl cellosolve.
i.e., CH30C2H40H, 6ellosolve~solvent, i.e., C2H50C2H40H, butyl Cellosolve~solvent~ i.e., C4HgOC2H40H,ant the like-The solubility is measured by tetermining the percent by weight of the polyol and/or glycol ether which is soluble in water at 20C. A polyol antlor glycol is characterized as partially soluble in water if its solubility in water at 20C is from about 0.99 to about 28.0 weight percent.
From about 0.08 to about 10 parts by volume of the polyol and/or glycol ether, which is partially soluble in water, is uset per part by volume of the polyol ant/or glycol ether which is completely soluble in water.
The fountain solution general;y contains several other ingredients. These include water-soluble polymers, in particular water-soluble gums which con-tain carboxyl and hydroxyl groups. Gum arabic is the oldest and most witely uset polymer. Carboxymethyl cellulose, hytroxyethyl cellulose as well as s~yrene-maleic anhydride copolymers, polyvinyl pyrrolidone, and the like, may also be used. These polymers are generally used in concentrations of from about 1 and about 10 percent by weight.
5.
` 11'74011 .
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. ~owever, the particular pH at which a given solution will be main-tained 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.
Other 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, glu-taraldehyde, and the like. These additives are generally used in amounts of from about 0.1 to about 10 percent by volume.
1:17~011 EXAMPLES
The following examples sesve to illustrate specific em~odiments of this invention and it is not intended that the invention shall be l~mited by the examples.
Control The following ingredients were mixed together to form a foun~ain solution base:
0.5 ounce gum arabic 0.5 ounce phosphoric acid (a 5% solution in water), and 127.0 ounce water To the formulation,which equaled one gallon Cl28 ounces) was added 1.3 ouncesof 2-eth~l-1,3-hexane-diol to make a 1 volume percent concentration of 2-ethyl-1,3-hexanediol.
The fountain solution was used on a 25 inch production size press with a Dahlgren recircu-lating dampening system. The press was run with the damper set at speeds of 40, 50 and 60 running approx-imately 2ûû 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 Densi~ometer. Also, 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 ~174011 observations were made of the print to determine the appearance of tinting ant banding.
The results are shown in Table I.
Example 1 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic 0.5 ounce phosphoric acid (a 5% solution in water) 127.0 ounce - water 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce propylene glycol The formulation yielded a 1 volume percent concentration of 2-ethyl-1,3-hexanediol and a 5 volume percent concentration of propylene glycol.
The solution was tested as described in Control A.
The results are shown in Table I.
Example 2 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solu-tion in water), 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce dipropylene glycol The solution was tested as described in Con-trol A.
,, ... . ". . 11740~
The results are shown in Table I.
Example 3 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solution in wa~er), 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce diethylene glycol The solution was tested as described in Con-trol A.
The results are shown in Table I.
Exanç~le 4 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solution in water), 20 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce hexylene glycol The solution was tested as described in Con-trol A.
The results are snown in Table I.
. ~ ~
1~7~0~1 g ~ ~ ~ ~ ~ i~
~s ~
o ,--I_ ~D
1~ P;~
5 :~' g lo ~.q.
~ ~ O ~ g ~
1` ~
Vl .P W ~ ~ o ~ 1~
~ ~D
~=
n i~
O
,t 10 .
.. . .. . . . ....... . .... .. . . ..... . . .
The data in Table I show that generally higher optical density values are obtained when 2-ethyl-1,3-hexanediol is mixed with a glycol. Also, the scum cycle values are generally lower when 2-ethyl-1,3-hexanediol is mixed with a glycol, which means that the addition of the glycol improves the cleansing operation. Further, addition of glycol to 2-ethyl-1,3-hexanediol tends to reduce tinting and banding.
Examples 5 to 9 In these Examples fountain solutions were pre-pared using 2-ethyl-1,3-hexanediol and propylene glycol where the concentration of propylene glycol was varied.
Example 5 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solution in water), 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 2.6 ounce propylene glycol The formulation yielded a 2 volume percent - concentrat~on c propylene glycol.
The formulations were used on the press described in COn~rO. A~ lhese aifferent inks were used: offset ink No. 205; heatset web offset ink No.
204; and an acrylic modified sheet offset ink. similar to No. 205 CNational Association Printing Ink Manu-facturers, August, 1974~. The optical density was measured. Also, the scum cycle test was performed.
The results are shown in Table II.
11 .
1~401~
.. ~ . . . ....... . . . . ~ , . .. .
~xample 6 Example 5 was exactly repeated except that 5.2 cunces of propylene glycol were used. The formula-tion yielded a 4 volume percent concentration of the glycol .
The results are shown in Table II.
Example 7 Example 5 was exactly repeated except that 7.8 ounces of propylene glycol were used: The formula-tion yielded a 6 volume percent concentration of the glycol.
The results are show~ in Table II.
Example 8 Example S was exactly repeated except that 10.4 ounces of propylene glycol were used. The form-ulation yielded an 8 volume concentration of the glycol.
The results are shown in Table II.
Example 9 Example 5 was exactly repeated except that 13.0 ounces of propylene glycoi were used. The form-ulatio~ yielded a 10 volume concentration of the glycol.
The results are shown in Table II.
il~4011 .
~J~ ~n ~ n CO
(D :~ : : : :
~, P.n : : : : ~ _ O, O : : : : ~ OOCr~ , ~ o X ~ ~ ~ o~ o~
. n O
I_ I~
Ul ~ ~ ~ ~ ~ ~ ~
O ~ O O O ~n O ~n O o o o C~ 1~ r . O
~ ~ ~1. ~n O~ Vl ~ a~ o ~oo ~ ~
. ~
U~ 5 _ ~ O ~--O O
~ ¦ ~ ¦ ~
.
13 .
1~'74011 fountain solution separate as in lithographic presses with conventional dispersin~ systems. However, when the fountain solution is transported by the rollers in the form of a thin film, volatile components, especially the alcohol, are lost. Aside from the cost considerations in losing the alcohol by evaporation, safety considera-tions urge against its use. Thus, it is desirable to find a substitute for the volatile alcohol which does not have the problems associatéd with using iso-propyl alcohol~
U.S. Patent 3,877,372 describes an attempt to eliminate isopropanol from the fountain solution and use a mixture of butyl ¢elloso? ~, 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 pro-perties associated with isopropyl alcohol containing fountain solutions. Also, fountain solutions con~ain-ing the 2-ethyl-1,3-hexanediol provide a high quality printed product on a lithographic press.
However, it has been found that in using the 2-ethyl-1,3-hexanediol containing fountain solu-tions, the appearance of tinting and/or banding in the print is observed in many instances. Tinting is the deposition of minute ink droplets in the non-image area of the print resuLt~ng in the appearance of a light tint. Banding is the appearance of narrow dark streaks 4()11 in the print. Thus, there is a desire to develop a non-isopropyl alcohol containing fountain solution whose use would substantially eliminate the appearance of tlnting and/or banding in a print.
DESCRIPTION OF THE INVENTION
It has now been found that when a mixture of a polyol and/or glycol ether partially soluble in water arld a polyol and/or glycol ether completely soluble in water is used in a fountain solution; tinting and/or banding-in the resulting print is substantially reduced and in many instances eliminated.
The use of such a mixture as a replacement for isopropyl alcohol eliminates the toxic and flam-mable properties of conventional isopropyl alcohol-containing fountain solutions and provides a fountain solution that has the other desirable properties which provide a high quality printed product on a lithographic plate.
~ he fountain solution contains between about '0 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., HOCH2CCCH3~2CH2OCOC(CH3)2CH2OH, Hexyl Cello-solve~ i.e., C6H13OCH2CH2OH, Hexyl Carbitol~ i.e., C6H13OCC2H4O~2H, and the like. The polyol and/or glycol ethers which is completely soluble in water 4.
1i74Vll includes, for exEmple, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, hexylene glycol, triethylene glycol, tetraethylene glycol, tr -- propylene glycol, 1,5-pentanediol, methyl cellosolve.
i.e., CH30C2H40H, 6ellosolve~solvent, i.e., C2H50C2H40H, butyl Cellosolve~solvent~ i.e., C4HgOC2H40H,ant the like-The solubility is measured by tetermining the percent by weight of the polyol and/or glycol ether which is soluble in water at 20C. A polyol antlor glycol is characterized as partially soluble in water if its solubility in water at 20C is from about 0.99 to about 28.0 weight percent.
From about 0.08 to about 10 parts by volume of the polyol and/or glycol ether, which is partially soluble in water, is uset per part by volume of the polyol ant/or glycol ether which is completely soluble in water.
The fountain solution general;y contains several other ingredients. These include water-soluble polymers, in particular water-soluble gums which con-tain carboxyl and hydroxyl groups. Gum arabic is the oldest and most witely uset polymer. Carboxymethyl cellulose, hytroxyethyl cellulose as well as s~yrene-maleic anhydride copolymers, polyvinyl pyrrolidone, and the like, may also be used. These polymers are generally used in concentrations of from about 1 and about 10 percent by weight.
5.
` 11'74011 .
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. ~owever, the particular pH at which a given solution will be main-tained 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.
Other 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, glu-taraldehyde, and the like. These additives are generally used in amounts of from about 0.1 to about 10 percent by volume.
1:17~011 EXAMPLES
The following examples sesve to illustrate specific em~odiments of this invention and it is not intended that the invention shall be l~mited by the examples.
Control The following ingredients were mixed together to form a foun~ain solution base:
0.5 ounce gum arabic 0.5 ounce phosphoric acid (a 5% solution in water), and 127.0 ounce water To the formulation,which equaled one gallon Cl28 ounces) was added 1.3 ouncesof 2-eth~l-1,3-hexane-diol to make a 1 volume percent concentration of 2-ethyl-1,3-hexanediol.
The fountain solution was used on a 25 inch production size press with a Dahlgren recircu-lating dampening system. The press was run with the damper set at speeds of 40, 50 and 60 running approx-imately 2ûû 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 Densi~ometer. Also, 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 ~174011 observations were made of the print to determine the appearance of tinting ant banding.
The results are shown in Table I.
Example 1 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic 0.5 ounce phosphoric acid (a 5% solution in water) 127.0 ounce - water 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce propylene glycol The formulation yielded a 1 volume percent concentration of 2-ethyl-1,3-hexanediol and a 5 volume percent concentration of propylene glycol.
The solution was tested as described in Control A.
The results are shown in Table I.
Example 2 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solu-tion in water), 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce dipropylene glycol The solution was tested as described in Con-trol A.
,, ... . ". . 11740~
The results are shown in Table I.
Example 3 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solution in wa~er), 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce diethylene glycol The solution was tested as described in Con-trol A.
The results are shown in Table I.
Exanç~le 4 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solution in water), 20 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 6.8 ounce hexylene glycol The solution was tested as described in Con-trol A.
The results are snown in Table I.
. ~ ~
1~7~0~1 g ~ ~ ~ ~ ~ i~
~s ~
o ,--I_ ~D
1~ P;~
5 :~' g lo ~.q.
~ ~ O ~ g ~
1` ~
Vl .P W ~ ~ o ~ 1~
~ ~D
~=
n i~
O
,t 10 .
.. . .. . . . ....... . .... .. . . ..... . . .
The data in Table I show that generally higher optical density values are obtained when 2-ethyl-1,3-hexanediol is mixed with a glycol. Also, the scum cycle values are generally lower when 2-ethyl-1,3-hexanediol is mixed with a glycol, which means that the addition of the glycol improves the cleansing operation. Further, addition of glycol to 2-ethyl-1,3-hexanediol tends to reduce tinting and banding.
Examples 5 to 9 In these Examples fountain solutions were pre-pared using 2-ethyl-1,3-hexanediol and propylene glycol where the concentration of propylene glycol was varied.
Example 5 The following ingredients were mixed together to form a fountain solution:
0.5 ounce gum arabic, 0.5 ounce phosphoric acid (a 5% solution in water), 127.0 ounce water, 1.3 ounce 2-ethyl-1,3-hexanediol, and 2.6 ounce propylene glycol The formulation yielded a 2 volume percent - concentrat~on c propylene glycol.
The formulations were used on the press described in COn~rO. A~ lhese aifferent inks were used: offset ink No. 205; heatset web offset ink No.
204; and an acrylic modified sheet offset ink. similar to No. 205 CNational Association Printing Ink Manu-facturers, August, 1974~. The optical density was measured. Also, the scum cycle test was performed.
The results are shown in Table II.
11 .
1~401~
.. ~ . . . ....... . . . . ~ , . .. .
~xample 6 Example 5 was exactly repeated except that 5.2 cunces of propylene glycol were used. The formula-tion yielded a 4 volume percent concentration of the glycol .
The results are shown in Table II.
Example 7 Example 5 was exactly repeated except that 7.8 ounces of propylene glycol were used: The formula-tion yielded a 6 volume percent concentration of the glycol.
The results are show~ in Table II.
Example 8 Example S was exactly repeated except that 10.4 ounces of propylene glycol were used. The form-ulation yielded an 8 volume concentration of the glycol.
The results are shown in Table II.
Example 9 Example 5 was exactly repeated except that 13.0 ounces of propylene glycoi were used. The form-ulatio~ yielded a 10 volume concentration of the glycol.
The results are shown in Table II.
il~4011 .
~J~ ~n ~ n CO
(D :~ : : : :
~, P.n : : : : ~ _ O, O : : : : ~ OOCr~ , ~ o X ~ ~ ~ o~ o~
. n O
I_ I~
Ul ~ ~ ~ ~ ~ ~ ~
O ~ O O O ~n O ~n O o o o C~ 1~ r . O
~ ~ ~1. ~n O~ Vl ~ a~ o ~oo ~ ~
. ~
U~ 5 _ ~ O ~--O O
~ ¦ ~ ¦ ~
.
13 .
Claims (3)
1. An improved fountain solution suitable for use in a lithographic offset printing press which solution contains between 0.5 and about 10 percent by volume of a mixture of a polyol and/or glycol ether partially soluble in water and a polyol and/or glycol ether completely soluble in water, and wherein from about 0.08 to about 10 parts by volume of said partially soluble ether is used per part by volume of said completely soluble ether.
2. A fountain solution as defined in claim 1 wherein the glycol which is partially soluble in water comprises 2-ethyl-1,3-hexanediol.
3. A fountain solution as defined in claims 1 or 2 wherein the glycol which is completely soluble in water is selected from one or more of propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, hexylene glycol, triethylene glycol, tetraeth-ylene glycol, tripropylene glycol and 1,5-pentanediol.
14.
14.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26407681A | 1981-05-18 | 1981-05-18 | |
| US264,076 | 1981-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1174011A true CA1174011A (en) | 1984-09-11 |
Family
ID=23004465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000402616A Expired CA1174011A (en) | 1981-05-18 | 1982-05-10 | Fountain solutions suitable for use in lithographic offset printing |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0066176B1 (en) |
| JP (1) | JPS57199693A (en) |
| AT (1) | ATE11117T1 (en) |
| CA (1) | CA1174011A (en) |
| DE (1) | DE3261826D1 (en) |
| MX (1) | MX156658A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1228204A (en) * | 1982-03-29 | 1987-10-20 | Richard J. Burns | Fountain solution |
| EP0249751A3 (en) * | 1986-06-16 | 1988-03-23 | Hoechst Celanese Corporation | Feuchtmittel mit einem darin enthaltenen polyolgemisch |
| JP2673586B2 (en) * | 1989-08-02 | 1997-11-05 | 富士写真フイルム株式会社 | Damping water composition for lithographic printing plate, concentrated liquid used therefor and lithographic printing method using the same |
| JPH0785947B2 (en) * | 1989-08-05 | 1995-09-20 | 東洋インキ製造株式会社 | Fountain solution for lithographic printing |
| DE4113474A1 (en) * | 1991-04-25 | 1992-10-29 | Heidelberger Druckmasch Ag | DAMPENER FOR USE IN 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 |
| JP2001138656A (en) * | 1999-11-10 | 2001-05-22 | Fuji Photo Film Co Ltd | Concentrated dampening water composition for lithographic printing |
| US6488754B2 (en) | 2000-11-29 | 2002-12-03 | Grain Processing Corporation | Lithographic dampening solution and method for dampening a lithographic plate |
| JP2003170673A (en) | 2001-09-28 | 2003-06-17 | Fuji Photo Film Co Ltd | Dampening water composition for lithographic printing plate and method of lithographic printing |
| EP1688266A1 (en) | 2005-02-03 | 2006-08-09 | Fuji Photo Film B.V. | Method and solvent mix to improve the dampening of lithographic printing plates |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5129441B2 (en) * | 1971-10-08 | 1976-08-25 | ||
| DE2337125A1 (en) * | 1973-07-20 | 1975-01-30 | Kodak Ag | Damping water concentrate for offset printing - contg. alcohol, isopropyl glycol, ethyl diglycol, opt water and acid pH-setter |
| US3877372A (en) * | 1973-12-03 | 1975-04-15 | Kenneth W Leeds | Treatment of a printing plate with a dampening liquid |
| 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 |
| US4278467A (en) * | 1978-09-11 | 1981-07-14 | Graphic Arts Technical Foundation | Substitutive additives for isopropyl alcohol in fountain solution for lithographic offset printing |
-
1982
- 1982-05-10 CA CA000402616A patent/CA1174011A/en not_active Expired
- 1982-05-17 EP EP82104326A patent/EP0066176B1/en not_active Expired
- 1982-05-17 DE DE8282104326T patent/DE3261826D1/en not_active Expired
- 1982-05-17 AT AT82104326T patent/ATE11117T1/en not_active IP Right Cessation
- 1982-05-17 MX MX192724A patent/MX156658A/en unknown
- 1982-05-17 JP JP57081735A patent/JPS57199693A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| EP0066176A1 (en) | 1982-12-08 |
| JPH0446760B2 (en) | 1992-07-30 |
| JPS57199693A (en) | 1982-12-07 |
| EP0066176B1 (en) | 1985-01-09 |
| DE3261826D1 (en) | 1985-02-21 |
| ATE11117T1 (en) | 1985-01-15 |
| MX156658A (en) | 1988-09-22 |
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