CA2145070A1 - Microcapsule-containing printing inks for letterpress or offset printing - Google Patents
Microcapsule-containing printing inks for letterpress or offset printingInfo
- Publication number
- CA2145070A1 CA2145070A1 CA002145070A CA2145070A CA2145070A1 CA 2145070 A1 CA2145070 A1 CA 2145070A1 CA 002145070 A CA002145070 A CA 002145070A CA 2145070 A CA2145070 A CA 2145070A CA 2145070 A1 CA2145070 A1 CA 2145070A1
- Authority
- CA
- Canada
- Prior art keywords
- printing
- letterpress
- printing ink
- printing inks
- microcapsule
- 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/1246—Application of the layer, e.g. by printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
- B41M5/1655—Solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Color Printing (AREA)
Abstract
The present invention relates to printing inks for letterpress or offset printing which contain microcapsules which contain color formers, and alkali metal salts of rosin as binders and glycols or glycol ethers as solvents.
Description
O.Z. 0050/43640 Microcapsule-contA;n;ng printing inks for letterpress or offset printing 5 The present invention relates to novel printing inks for letter-press or offset printing which contain microcapsules which con-tain color formers, and alkali metal salts of rosin as binders and glycols or glycol ethers as solvents.
10 The present invention also relates to a process for producing pressure-sensitive, carbonless transfer systems using these printing inks.
Carbonless copying papers are well known. The way they function 15 is that a color-forming component, which is usually dissolved in an organic solvent and enclosed in a microcapsule, and a color-developing component are brought into contact and react to form a color. In monolayer systems, called single cG.uponent carbonless copying papers, encapsulated color formers and developers are 20 applied together in one layer to the support material, usually paper. Multilayer systems are usually composed of two or more sheets of paper which are placed one on top of the other and in which a microcapsule-contA; n; ng donor layer is applied to the reverse side of the top sheet and a developer-contA;n;ng 25 recipient layer is applied to the front side of the next sheet down. In both cases, the microcapsules are destroyed by the pres-sure exerted during writing, and a copy is produced by reaction of color former and color developer.
30 EP-A 37477 discloses the production of these transfer systems by the letterpress or offset printing technique using microcapsule-contA;n;ng printing inks. However, the described printing inks contain no solvent.
35 It is an object of the present invention to provide further printing inks which can be advantageously employed for producing carbonless copying papers.
We have found that this object is achieved by printing inks for 40 letterpress or offset printing which contain microcapsules which contain color formers, and AlkAl; metal salts of rosin as binder and glycols or glycol ethers as solvent.
We have also found a process for the production of pressure-45 sensitive, carbonless transfer systems by the letterpress or off-set printing technique, wherein these printing inks are used.
AMENDED SHEET
10 The present invention also relates to a process for producing pressure-sensitive, carbonless transfer systems using these printing inks.
Carbonless copying papers are well known. The way they function 15 is that a color-forming component, which is usually dissolved in an organic solvent and enclosed in a microcapsule, and a color-developing component are brought into contact and react to form a color. In monolayer systems, called single cG.uponent carbonless copying papers, encapsulated color formers and developers are 20 applied together in one layer to the support material, usually paper. Multilayer systems are usually composed of two or more sheets of paper which are placed one on top of the other and in which a microcapsule-contA; n; ng donor layer is applied to the reverse side of the top sheet and a developer-contA;n;ng 25 recipient layer is applied to the front side of the next sheet down. In both cases, the microcapsules are destroyed by the pres-sure exerted during writing, and a copy is produced by reaction of color former and color developer.
30 EP-A 37477 discloses the production of these transfer systems by the letterpress or offset printing technique using microcapsule-contA;n;ng printing inks. However, the described printing inks contain no solvent.
35 It is an object of the present invention to provide further printing inks which can be advantageously employed for producing carbonless copying papers.
We have found that this object is achieved by printing inks for 40 letterpress or offset printing which contain microcapsules which contain color formers, and AlkAl; metal salts of rosin as binder and glycols or glycol ethers as solvent.
We have also found a process for the production of pressure-45 sensitive, carbonless transfer systems by the letterpress or off-set printing technique, wherein these printing inks are used.
AMENDED SHEET
2 1 4 ~ 0 7 ~ - Z . 0050/43640 _ Suitable microcapsules for the printing inks according to the invention are all conventional products, and plastic capsules in dry form are preferably used. Specific examples are capsules made of polyamides or polyurethanes and, in particular, those made of 5 melamine/formaldehyde resins or acrylic acid derivatives. The production of these types of capsules is disclosed, in particu-lar, in the patent literature ~see, for example, EP-A 26914).
Suitable color formers for the printing inks according to the lO invention are the compounds which are conventionally employed and - which develop a color on contact with an acid. Examples are tri-phenylmethanes, diphenylmethanes, xanthenes, in particular fluo-rans and rhodamine lactams, thiazines and spiropyrans, which can be used singly or in the form of mixtures.
The core oils which are employed as solvents for the color for-mers are likewise known in the art. Examples are chlorinated diphenyl, chlorinated paraffin, cottonseed oil, peanut oil, sili-cone oil, organic phthalates, phosphates and sulfonates, monoch-20 lorobenzene, partially hydrogenated terphenyls, alkylated diphe-nyls, alkylated naphthalenes, aryl ethers, aryl alkyl ethers and higher alkylated benzene.
Binders which are present according to the invention are rosin 25 derivatives, essentially alkali metal salts of abietic acid, the alkali metal being potassium, lithium or, in particular, sodium.
These binders are soluble in the glycols and glycol ethers used as solvent. Examples of glycols and glycol ethers according to the invention are the following solvents: ethylene glycol, 30 1,2-propylene glycol, glycerol, diethylene glycol, dipropylene glycol, polyglycols of molecular weight 200 to 600, ethylene gly-col monomethyl, monoethyl or monobutyl ether or monoethers of polyglycols. Mixtures of the~e solvents are likewise suitable.
Low-viscosity solvents are preferred, such as glycerol or propy-35 lene glycol.
Examples of quantitative compositions of printing inks accordingto the invention follow:
40 10-40% (preferably 15-30~) by weight of binder 20-60% ~preferably 25-50%) by weight of solvent and 20-50% (preferably 25-40%) by weight of microcapsules.
The microcapsules are, as already stated, preferably used in dry 45 form because this makes it easier to achieve the concentration necessary for subsequent production of the script. The printing inks according to the invention are obtained by mixing the AMENDED SHEET
21~ 5 D 7 0 o. z . 0050/43640 components, expediently by first dissolving the binder in the solvent and then stirring the microcapsules into the solution.
To achieve high scuff resistance of the printings it is usually 5 expedient also to add to the printing ink a spacer in amounts up to 15%, preferably 5-10%, of the weight of the printing ink.
Spacers are likewise disclosed in the patent literature, and spe-cific examples are titanium dioxide, plastic beads with diameters 10 of 20-30 ~, cellulose fibers or calibrated starch.
It is surprisingly possible to use the printing inks according to the invention to coat papers with which satisfactory copies are obtained. In particular, the printing inks are suitable for spot 15 printing.
In the examples, unless indicated otherwise, parts and percent-ages are by weight.
35 parts by weight of microcapsule powder (microcapsules produced as described in EP-B 26914, contA;n;ng a color former/
black mixture) 5 parts by weight of calibrated starch (eg. Amyzet~ KT from Amylum, Belgium) as spacer 30 parts by weight of sodium resinate (rosin salt) and 30 parts by weight of glycerol are mixed by first dissolving the resinate in the glycerol and then stirring in the capsules and the spacer. The result is a 35 colorless printing ink which is printed by indirect letterpress on the donor side of a set of forms in an amount of about 6 g/m2.
Writing on the set of forms, which has a clay layer as recipien~, results in a black copy of adequate intensity.
A printing ink composed of 40 parts by weight of microcapsule powder, 5 parts by weight of Tio2 (rutile) as spacer, 22 parts by weight of sodium resinate and 33 parts by weight of 1,2-propylene glycol 2 1 4 5 0 7 0 O.Z. 0050/43640 _ is prepared as in Example 1. After printing as in Example 1, writing results in copies of satisfactory intensity.
A printing ink composed of 0 30 parts by weight of microcapsule powder cont~; n; ng a blue color-former mixture, 5 parts by weight of cellulose powder (Arbozell~ ~600/30 from Retten~;er, Germany) as spacer, 25 parts by weight of sodium resinate and 15 40 parts by weight of glycerol likewise yields copies of satisfactory intensity.
Suitable color formers for the printing inks according to the lO invention are the compounds which are conventionally employed and - which develop a color on contact with an acid. Examples are tri-phenylmethanes, diphenylmethanes, xanthenes, in particular fluo-rans and rhodamine lactams, thiazines and spiropyrans, which can be used singly or in the form of mixtures.
The core oils which are employed as solvents for the color for-mers are likewise known in the art. Examples are chlorinated diphenyl, chlorinated paraffin, cottonseed oil, peanut oil, sili-cone oil, organic phthalates, phosphates and sulfonates, monoch-20 lorobenzene, partially hydrogenated terphenyls, alkylated diphe-nyls, alkylated naphthalenes, aryl ethers, aryl alkyl ethers and higher alkylated benzene.
Binders which are present according to the invention are rosin 25 derivatives, essentially alkali metal salts of abietic acid, the alkali metal being potassium, lithium or, in particular, sodium.
These binders are soluble in the glycols and glycol ethers used as solvent. Examples of glycols and glycol ethers according to the invention are the following solvents: ethylene glycol, 30 1,2-propylene glycol, glycerol, diethylene glycol, dipropylene glycol, polyglycols of molecular weight 200 to 600, ethylene gly-col monomethyl, monoethyl or monobutyl ether or monoethers of polyglycols. Mixtures of the~e solvents are likewise suitable.
Low-viscosity solvents are preferred, such as glycerol or propy-35 lene glycol.
Examples of quantitative compositions of printing inks accordingto the invention follow:
40 10-40% (preferably 15-30~) by weight of binder 20-60% ~preferably 25-50%) by weight of solvent and 20-50% (preferably 25-40%) by weight of microcapsules.
The microcapsules are, as already stated, preferably used in dry 45 form because this makes it easier to achieve the concentration necessary for subsequent production of the script. The printing inks according to the invention are obtained by mixing the AMENDED SHEET
21~ 5 D 7 0 o. z . 0050/43640 components, expediently by first dissolving the binder in the solvent and then stirring the microcapsules into the solution.
To achieve high scuff resistance of the printings it is usually 5 expedient also to add to the printing ink a spacer in amounts up to 15%, preferably 5-10%, of the weight of the printing ink.
Spacers are likewise disclosed in the patent literature, and spe-cific examples are titanium dioxide, plastic beads with diameters 10 of 20-30 ~, cellulose fibers or calibrated starch.
It is surprisingly possible to use the printing inks according to the invention to coat papers with which satisfactory copies are obtained. In particular, the printing inks are suitable for spot 15 printing.
In the examples, unless indicated otherwise, parts and percent-ages are by weight.
35 parts by weight of microcapsule powder (microcapsules produced as described in EP-B 26914, contA;n;ng a color former/
black mixture) 5 parts by weight of calibrated starch (eg. Amyzet~ KT from Amylum, Belgium) as spacer 30 parts by weight of sodium resinate (rosin salt) and 30 parts by weight of glycerol are mixed by first dissolving the resinate in the glycerol and then stirring in the capsules and the spacer. The result is a 35 colorless printing ink which is printed by indirect letterpress on the donor side of a set of forms in an amount of about 6 g/m2.
Writing on the set of forms, which has a clay layer as recipien~, results in a black copy of adequate intensity.
A printing ink composed of 40 parts by weight of microcapsule powder, 5 parts by weight of Tio2 (rutile) as spacer, 22 parts by weight of sodium resinate and 33 parts by weight of 1,2-propylene glycol 2 1 4 5 0 7 0 O.Z. 0050/43640 _ is prepared as in Example 1. After printing as in Example 1, writing results in copies of satisfactory intensity.
A printing ink composed of 0 30 parts by weight of microcapsule powder cont~; n; ng a blue color-former mixture, 5 parts by weight of cellulose powder (Arbozell~ ~600/30 from Retten~;er, Germany) as spacer, 25 parts by weight of sodium resinate and 15 40 parts by weight of glycerol likewise yields copies of satisfactory intensity.
Claims (6)
1. A printing ink for letterpress or offset printing which con-tains microcapsules which contain color formers, and alkali metal salts of rosin as binder and glycols or glycol ethers as solvent.
2. A printing ink as claimed in claim 1, which additionally con-tains a spacer.
3. A printing ink as claimed in claim 1 or 2, which contains microcapsules composed of melamine/formaldehyde resins.
4. A printing ink as claimed in claims 1 to 3, which has been produced using microcapsule powder.
5. A printing ink as claimed in claims 1 to 4, which contains glycerol or 1,2-propylene glycol as solvent.
6. A process for the production of pressure-sensitive, carbon-less transfer systems by the letterpress or offset printing technique, wherein the printing inks as claimed in claims 1 to 5 are used.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4235788.8 | 1992-10-23 | ||
| DE4235788A DE4235788A1 (en) | 1992-10-23 | 1992-10-23 | Printing inks containing microcapsules for book or offset printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2145070A1 true CA2145070A1 (en) | 1994-05-11 |
Family
ID=6471165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002145070A Abandoned CA2145070A1 (en) | 1992-10-23 | 1993-10-14 | Microcapsule-containing printing inks for letterpress or offset printing |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP0665788A1 (en) |
| JP (1) | JPH08502699A (en) |
| KR (1) | KR950704123A (en) |
| CN (1) | CN1086236A (en) |
| AU (1) | AU5177693A (en) |
| BR (1) | BR9307286A (en) |
| CA (1) | CA2145070A1 (en) |
| CO (1) | CO4290371A1 (en) |
| CZ (1) | CZ92195A3 (en) |
| DE (1) | DE4235788A1 (en) |
| FI (1) | FI951892L (en) |
| IL (1) | IL107281A0 (en) |
| NO (1) | NO951522L (en) |
| PL (1) | PL308488A1 (en) |
| WO (1) | WO1994009991A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5622548A (en) * | 1995-05-19 | 1997-04-22 | Micap Technology Corp. | Duplicating inks for digital duplicators |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5646203A (en) * | 1994-03-31 | 1997-07-08 | Toppan Moore Co., Ltd. | Microcapsule-containing oil-based coating liquid, ink, coated sheet, and method of preparing the same |
| US6042641A (en) * | 1998-10-16 | 2000-03-28 | The Mead Corporation | CB printing ink |
| CN104275923A (en) * | 2014-05-06 | 2015-01-14 | 上海天美纸制品印务有限公司 | Carbon-free paper printing and machining integrated machine |
| DE102017008415A1 (en) * | 2017-08-19 | 2019-02-21 | Hescoat GmbH | Non-stick coating |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3008390A1 (en) * | 1980-03-05 | 1981-09-17 | Basf Ag, 6700 Ludwigshafen | LOW VISCOSIS, MICROCAPSULES AND BINDERS CONTAINING AQUEOUS COATING AND PRINTING INKS |
| US4601863A (en) * | 1984-02-09 | 1986-07-22 | Kanzaki Paper Manufacturing Co., Ltd. | Process for producing powder of microcapsules |
| US4889877A (en) * | 1988-01-07 | 1989-12-26 | The Standard Register Company | High solids CB printing ink |
| US4985484A (en) * | 1989-02-27 | 1991-01-15 | The Mead Corporation | Process for the production of coating compositions containing microcapsules |
-
1992
- 1992-10-23 DE DE4235788A patent/DE4235788A1/en not_active Withdrawn
-
1993
- 1993-10-14 EP EP93922951A patent/EP0665788A1/en not_active Withdrawn
- 1993-10-14 PL PL93308488A patent/PL308488A1/en unknown
- 1993-10-14 CZ CZ95921A patent/CZ92195A3/en unknown
- 1993-10-14 AU AU51776/93A patent/AU5177693A/en not_active Abandoned
- 1993-10-14 IL IL107281A patent/IL107281A0/en unknown
- 1993-10-14 JP JP6510621A patent/JPH08502699A/en active Pending
- 1993-10-14 BR BR9307286A patent/BR9307286A/en not_active Application Discontinuation
- 1993-10-14 KR KR1019950701537A patent/KR950704123A/en not_active Application Discontinuation
- 1993-10-14 WO PCT/EP1993/002831 patent/WO1994009991A1/en not_active Application Discontinuation
- 1993-10-14 CA CA002145070A patent/CA2145070A1/en not_active Abandoned
- 1993-10-22 CO CO93415236A patent/CO4290371A1/en unknown
- 1993-10-22 CN CN93119531A patent/CN1086236A/en active Pending
-
1995
- 1995-04-20 FI FI951892A patent/FI951892L/en unknown
- 1995-04-21 NO NO951522A patent/NO951522L/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5622548A (en) * | 1995-05-19 | 1997-04-22 | Micap Technology Corp. | Duplicating inks for digital duplicators |
Also Published As
| Publication number | Publication date |
|---|---|
| PL308488A1 (en) | 1995-08-07 |
| CZ92195A3 (en) | 1995-10-18 |
| EP0665788A1 (en) | 1995-08-09 |
| FI951892A0 (en) | 1995-04-20 |
| NO951522D0 (en) | 1995-04-21 |
| JPH08502699A (en) | 1996-03-26 |
| NO951522L (en) | 1995-04-21 |
| DE4235788A1 (en) | 1994-04-28 |
| CN1086236A (en) | 1994-05-04 |
| BR9307286A (en) | 1999-06-01 |
| IL107281A0 (en) | 1994-01-25 |
| AU5177693A (en) | 1994-05-24 |
| FI951892L (en) | 1995-04-20 |
| WO1994009991A1 (en) | 1994-05-11 |
| KR950704123A (en) | 1995-11-17 |
| CO4290371A1 (en) | 1996-04-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |