EP1500499B2 - Procédé et dispositif pour mesurer et régler la concentration de produits chimiques dans la solution de mouillage pour l'impression offset - Google Patents
Procédé et dispositif pour mesurer et régler la concentration de produits chimiques dans la solution de mouillage pour l'impression offset Download PDFInfo
- Publication number
- EP1500499B2 EP1500499B2 EP04017479.9A EP04017479A EP1500499B2 EP 1500499 B2 EP1500499 B2 EP 1500499B2 EP 04017479 A EP04017479 A EP 04017479A EP 1500499 B2 EP1500499 B2 EP 1500499B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- individual
- accordance
- fountain solution
- components
- chemical components
- 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
Links
- 238000000034 method Methods 0.000 title claims description 63
- 239000000126 substance Substances 0.000 title claims description 53
- 239000007788 liquid Substances 0.000 title claims description 22
- 238000007645 offset printing Methods 0.000 title claims description 14
- 230000008569 process Effects 0.000 title description 47
- 239000000654 additive Substances 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 29
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 230000005670 electromagnetic radiation Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 238000007639 printing Methods 0.000 description 45
- 230000000996 additive effect Effects 0.000 description 26
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 14
- 239000002904 solvent Substances 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 5
- 238000009472 formulation Methods 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- -1 dirt Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0054—Devices for controlling dampening
Definitions
- the respective printing plate is wetted with an aqueous liquid by a so-called dampening system in order to ensure that in a subsequent process step the image areas take on the color, while the image-free areas behave ink-repellently.
- the aqueous liquid often consists of a mixture with alcohol, usually isopropanol, and a chemical mixture of up to around twenty substances, which is referred to below as an additive.
- the additive is available in concentrations of 1 to 8% vol., the alcohol from 0.5 to 20% vol. added.
- the concentration of the water is between 72% and 98.5% - vol.
- alcohol is sometimes completely avoided. In this case, the additive is also called an alcohol substitute.
- the optimized additive then fully or at least partially takes over the function of isopropanol.
- a major problem with offset printing is the insufficient availability of the process, which is typically only around 80% and is therefore characterized by long downtimes of very investment-intensive printing machines. For example, with a so-called 64-page offset rotary printing line, you would save around EUR 35,000 per year if the actual production time per day could be extended by an average of just two minutes. New, intensive practical studies have clearly shown that the low availability of offset printing machines is largely due to an undefined, unknown physical and chemical composition of the process fluid that has not yet been measurable in the process and therefore, in particular, cannot be controlled.
- the concentrations of alcohol in the dampening solution are currently between 6% and 20% and make it easier to use so-called film dampening systems in the case of web and sheetfed offset.
- the latter consist of several rollers coated with rubber mixtures and/or metals, which rotate in contact with one another with a certain contact pressure and transport the dampening solution to the printing plate in the form of a film of adjustable layer thickness. This transport process is promoted by the addition of isopropanol as a result of the resulting reduction in the surface tension of the liquid film.
- contactless systems in particular spray dampening systems operated with nozzles or dampening systems which have rollers with plush covers, are also used.
- the new method according to the invention is also in accordance with the prior art in these versions of utmost importance as it enables an optimal composition of the chemicals in the fountain solution.
- a real alternative to alcohol are the so-called surfactants, which have comparable advantages in terms of the wetting properties of the dampening solution on the rollers of the dampening unit.
- surfactants are not VOC's.
- surfactants lead to undesirable foaming and to quality-reducing emulsification of ink and fountain solution, so that in many practical cases alcohol-free printing fails and has to be replaced by printing with alcohol.
- the aim of the present invention is therefore to readjust the composition of the dampening solution to the respective target values by continuously measuring and regulating the composition of the dampening solution, ie by continuously re-dosing the individual differently impoverishing chemical components or selected groups of components, in order to ensure the availability of the offset printing process to the values of the competing Gravure pressure, ie to around 90 to 95%.
- JP-A-4327940 It is intended to control the concentrations of individual components in the fountain solution of offset printing machines by measuring the pH value, the conductivity, the refractive index, the specific gravity and the gas concentration and to replenish the respective component via pumps over a specific period of time if the concentration value is high is not within a range between an upper and a lower limit.
- a method and a device are used for the first time in printing technology, which continuously measure the concentrations of the individual components of the additive and regulate them to predetermined optimal values due to selective weakening of electromagnetic radiation. This prevents the process liquid from suffering a depletion or an overdose of individual components of the additive, so that the printing process can be continued continuously at the optimal operating point with high stability and availability.
- the process not only works with alcohol-free printing, ie for substitute materials, but that the selectivity of the measurement and control of the additive can also be maintained when printing with additional admixture of alcohol, ie that the alcohol does not cause any distortion of the measurement of the concentrations of the individual components of the additive.
- the selective measurement of the concentrations of the individual components or groups of different chemical compounds is coupled with a dosing system that removes the various components from different containers via a system consisting of clocked valves and pumps and supplies them to the dampening solution in a controlled manner.
- This new process significantly optimizes offset printing with alcohol. For the first time, printing without alcohol is put on a basis that enables a long-term process while meeting the economic constraints.
- the too narrow window of variation in the concentrations of the individual chemical components of ready-to-use additives is expanded as desired by the new process, so that constant changes of the dampening solution, in particular Due to the already mentioned search for better dampening solution additives when the printing process is shut down for several hours and the corresponding negative consequences for the disposal of the previously used dampening solution and thus also for the economic efficiency of the printing process, the new process no longer applies.
- dosing devices are used to produce the process liquid, which volumetrically mix the two or three components under fixed conditions within the framework of a control and into the liquid circuit of the printing press according to the respective consumption, ie according to the removal of the liquid through the paper to be printed.
- systems with conventional dosing pumps are currently in use.
- a major disadvantage of these systems is that neither the mixing devices malfunction nor changes in the physical and/or chemical composition, e.g. as a result of chemical reactions or absorption or desorption processes through the printing ink, the paper, through the pipeline or the machine modules, can be detected.
- evaporation processes in these classic dosing methods lead to significant concentration errors.
- the sensors currently in use as the only control instruments for detecting electrical conductivity are not suitable for quantitative measurement of the concentration of the respective additive or substitute because of the heavy and fluctuating contamination of the process liquid.
- the important chemical key components of the additives, which enable the printing process cannot be detected by a conductivity measurement because these substances cannot be dissociated in water.
- the pH probe which has already been introduced more or less as a standard in offset printing, can only be used as an indicator shortly before the functioning of the printing process collapses, since the required strong chemical buffering of the process liquid, for example by citric acid, also causes a change in the pH value major changes in the chemical composition are prevented.
- the aims of the present invention are therefore a method and a device for implementing the method, which enables quantitative, continuous measurement and control of the concentrations of the individual components of the respective additive or substitute in a matrix of up to 20 chemical components without incorrect influence from other substances , such as alcohol, dirt, paint and paper particles, gas bubbles, salts from the paper coating and other contaminants typical of offset printing.
- the individual components must be measured and controlled with a material-dependent accuracy of between 10 ppm and 3.0%. This problem has not yet been solved in any practical case.
- the present invention solves the tasks set, among other things, in that the individual chemical components are continuously measured and regulated to the dampening solution circuit as pure raw materials and / or as partial mixtures of several components, usually in mixtures with water, so that they are simply in the dampening solution solve and in particular do not form separate phases. In this way, chemical formulations in particular can be realized that separate in a prefabricated additive concentrate and would therefore not lead to a homogeneous solution.
- the weakening of electromagnetic radiation as it passes through the dampening solution is used to determine the concentration.
- Process liquid (2) located in a tank (1) is circulated by circulation pumps (3) to the printing press (4) and back to the tank (1) via pipes (5).
- the respective concentrations of the individual chemical components of the additive are continuously measured by a measuring system (6).
- the specified chemical components K1, K2, K3,... to Kn are fed into the process liquid (2) via pumps (7) and valves (8).
- the different required target concentrations of the chemical components K1 to Kn are guaranteed by the fact that the measuring system (6) continuously measures the actual concentrations and, as part of a control system, replenishes the amount of the respective component so that the actual value is equal to the specified one Target value is.
- the concentration of alcohol, unless alcohol-free printing is used is continuously measured in the process liquid (2) and the Alcohol lost essentially through evaporation is fed in from a storage container (13) via a unit consisting of a valve and metering pump (14), so that even when printing with alcohol, the target and actual values constantly match and the availability and quality of the printing process is guaranteed are.
- An agitator (15) is used to homogenize the process liquid.
- Fig 2 outlines an arrangement consisting of a printing press (16), a dampening solution tank (17), a dampening solution (18) with circulation (19) and the chemical components K1 to Kn (20), which have a Venturi nozzle (21) and a pump ( 22) is operated, the chemical components K1 to Kn are sucked in via valves (23) and fed into the dampening solution (18), the concentrations of the chemical components being measured via the measuring and control system (24) takes place.
- the make-up (25) of water with automatic level control and the agitator (26) correspond to the arrangements of Fig. 1 .
- Fig. 3 is in the overall arrangement consisting of printing press (27), dampening solution tank (28), dampening solution (29), measuring and control system (30), agitator (31), water feed (32) with fill level control (33) and dampening solution circulation (34), as Additional component a static mixer (35) is realized.
- the dampening water (29) circulated via the pump (36) is mixed with the chemical components K1 to Kn (37), which are fed into the circuit (39) via the valves (38), in the static mixer (35), as follows that both the measuring system (30) and the circuit (34) have homogeneous liquid mixtures with the aim that the entire system in Fig. 3 works optimally.
- Fig. 4 represents a version of the invention, which is characterized by a premixing of the chemical components K1 to Kn (42) via pumps (50a) with a water supply (41) in a mixing container (40).
- This arrangement ensures that the control process of the measuring system (43) for achieving the target concentrations of the chemical components K1 to Kn (42) is significantly shortened, so that the composition of the dampening solution (44) in the dampening solution tank (45) also over shorter time intervals always has the specified target values.
- a homogenization device (39) is also used in the premixing container (40).
- the latter can also be according to Fig. 3 be a static mixer.
- Fig. 5 shows a simple variant according to the invention, in which the chemical components K1 to Kn (51) are metered in via a valve (54) via calibrated metering pumps (53) controlled by the measuring system (52) in accordance with the respective target value of the individual component.
- the level measurement (55) and the agitator (56), in combination with the water supply (57), enable a homogeneous mixture of the dampening water (58), which circulates via the circulation pump (59) in the circuit (60) between the printing press (61) and the dampening water cooling device (62).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Printing Plates And Materials Therefor (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rotary Presses (AREA)
Claims (14)
- Procédé de mesure et régulation directe et sélective des concentrations des composants chimiques d'additifs chimiques ou de substances chimiques de remplacement de l'alcool dans la solution de mouillage de l'impression offset, caractérisé en ce que les concentrations des composants chimiques ou de leurs groupes sont déterminées en continu par l'enregistrement de l'affaiblissement du rayonnement électromagnétique au passage à travers la solution de mouillage et qu'un redosage des composants ou groupes de composants est réalisé en fonction de leurs valeurs de consigne respectives, les composants/groupes chimiques sont initialement mélangés à l'eau dans un réservoir de prémélange et le contenu liquide du réservoir de prémélange est envoyé dans le réservoir de la solution de mouillage.
- Procédé selon revendication 1, caractérisé en ce que les divers composants chimiques se trouvent dans des réservoirs distincts et que le redosage est effectué via un système de mesure qui mesure les concentrations des composants ou de groupes de ceux-ci en continu et procède au redosage des composants via une boucle de régulation.
- Procédé selon revendication 1 à 2, caractérisé en ce que le redosage des composants/groupes chimiques est effectué à partir des divers réservoirs par des pompes montées chacune en série avec une vanne.
- Procédé selon revendication 1 à 2, caractérisé en ce que l'aspiration des composants/groupes dans le circuit de la solution de mouillage est réalisée avec une buse Bernoulli.
- Procédé selon revendication 1 à 4, caractérisé en ce que le mélange de la solution de mouillage et des composants/groupes est optimisé par un mélangeur statique.
- Procédé selon revendication 1 à 2, caractérisé en ce que les composants/groupes chimiques en provenance de chaque réservoir sont chacun dosés via une pompe en amont desquelles est montée une vanne commune.
- Dispositif de mesure et de régulation des concentrations de composants chimiques ou de groupes de ceux-ci dans la solution de mouillage en impression offset, le dispositif comprenant à la fois des pompes et un système de mesure servant à la surveillance continue des concentrations des composants dans la solution de mouillage, caractérisé en ce que le dispositif présente un système de mesure et de régulation (6, 24, 30, 43, 52) qui mesure les concentrations des composants sur la base de l'affaiblissement sélectif du rayonnement électromagnétique à travers la solution de mouillage mentionnée en situation opérationnelle et réalimente les composants chimiques K1 à Kn via des pompes (7, 21, 36, 50, 55) de sorte qu'à tout moment les concentrations des composants chimiques sont égales aux concentrations de consigne, les composants chimiques K1 à Kn sont ajoutés dans un réservoir de prémélange (40) à l'eau d'une conduite d'eau (41) par le biais de pompes (50 a) et le mélange (47) est ensuite envoyé au réservoir principal (44).
- Dispositif selon revendication 7, caractérisé en ce qu'une buse de Bernoulli (21), entraînée par un courant partiel de la solution de mouillage (18) mise en circulation par une pompe (22), est utilisée comme pompe.
- Dispositif selon revendication 7 et 8, caractérisé en ce que les composants chimiques K1 à Kn sont mélangés entre eux de façon homogène par un mélangeur statique (35) avec la solution de mouillage (29) dans un circuit (39) entraîné par une pompe (38).
- Dispositif selon revendication 7, caractérisé en ce que les composants chimiques K1 à Kn sont dosés dans la solution de mouillage (58) chacun par une pompe (53), en amont de laquelle est montée une vanne (54).
- Dispositif selon revendication 7 à 10, caractérisé en ce qu'une deuxième unité de mesure et de régulation (12), qui mesure en continu la concentration d'alcool dans la solution de mouillage (2, 18, 29, 44, 58) et redose l'alcool consommé à partir d'un réservoir d'alcool (13) via une pompe (14) avec vanne en amont, est prévue.
- Dispositif selon revendication 7 à 11, caractérisé en ce que le niveau de remplissage (10, 27) est détecté par un capteur (11, 28, 33, 48, 55) et que la hauteur de remplissage est maintenue constante par une boucle de régulation.
- Dispositif selon revendication 12, caractérisé en ce qu'une unité à ultrasons, fonctionnant selon le principe de l'échosondage, est utilisée comme capteur de niveau (11, 28, 33, 48, 55).
- Dispositif selon revendication 7 à 13, caractérisé en ce que la solution de mouillage (2, 18, 29, 44, 58) est homogénéisée par des mélangeurs-agitateurs (15, 26, 31, 39, 46, 58).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10333625A DE10333625B4 (de) | 2003-07-24 | 2003-07-24 | Verfahren und Vorrichtung zur Messung und Regelung der Konzentration von chemischen Verbindungen im Feuchtwasser beim Offsetdruck |
DE10333625 | 2003-07-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1500499A1 EP1500499A1 (fr) | 2005-01-26 |
EP1500499B1 EP1500499B1 (fr) | 2016-01-20 |
EP1500499B2 true EP1500499B2 (fr) | 2023-11-22 |
Family
ID=33483038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04017479.9A Expired - Lifetime EP1500499B2 (fr) | 2003-07-24 | 2004-07-23 | Procédé et dispositif pour mesurer et régler la concentration de produits chimiques dans la solution de mouillage pour l'impression offset |
Country Status (3)
Country | Link |
---|---|
US (1) | US20050061188A1 (fr) |
EP (1) | EP1500499B2 (fr) |
DE (1) | DE10333625B4 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005003372B4 (de) | 2005-01-24 | 2024-04-18 | Gunther Krieg | Verfahren und Vorrichtung zum Regeln der Konzentration von Komponenten von Additiven in einer Druck- Prozessflüssigkeit |
DE102005042298A1 (de) * | 2005-09-06 | 2007-03-08 | Baldwin Germany Gmbh | Reinigungsflüssigkeitsversorgungsvorrichtung für eine Druckmaschinenreinigungsvorrichtung und Messverfahren |
DE102005042299A1 (de) * | 2005-09-06 | 2007-03-08 | Baldwin Germany Gmbh | Druckmaschinenreinigungsvorrichtung |
DE102006024789A1 (de) * | 2006-05-27 | 2007-11-29 | Man Roland Druckmaschinen Ag | Druckmaschine |
DE102006042091B4 (de) * | 2006-09-07 | 2008-04-30 | Technotrans Ag | Anlage zur Feuchtmittelaufbereitung für den Offset-Druck |
DE102007034973A1 (de) * | 2007-07-26 | 2009-01-29 | Technotrans Ag | Kontinuierliche Füllstandsüberwachung und Feuchtmittelzulauf |
CN105690978A (zh) * | 2016-01-24 | 2016-06-22 | 东莞华南印刷有限公司 | 全自动水斗液环保配料系统 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2017867A (en) * | 1930-02-05 | 1935-10-22 | Merle E Nantz | Mixing device |
US4403866A (en) * | 1982-05-07 | 1983-09-13 | E. I. Du Pont De Nemours And Company | Process for making paints |
DD219436B1 (de) * | 1983-11-11 | 1988-06-15 | Polygraph Leipzig | Einrichtung zur selbsttaetigen herstellung von aus mehreren komponenten zusammengesetzten feuchtmittel in vorbestimmter konzentration fuer offsetdruckmaschinen |
US4571092A (en) * | 1984-09-06 | 1986-02-18 | Ryco Graphic Manufacturing, Inc. | Liquid mixing system |
US4864925A (en) * | 1987-09-28 | 1989-09-12 | Rockwell International Corporation | Simplified lithography using ink and water admixtures |
JPH04327940A (ja) * | 1991-04-26 | 1992-11-17 | Toyo Ink Mfg Co Ltd | 平版印刷用湿し水濃度の制御方法 |
DE4324141A1 (de) * | 1993-07-19 | 1995-03-16 | Krieg Gunther | Verfahren und Vorrichtung zur kontinuierlichen, präzisen und zuverlässigen Bestimmung und Steuerung des Isopropanol - Gehaltes in Feuchtmitteln in Druckmaschinen |
DE19546971A1 (de) * | 1995-12-15 | 1997-06-19 | Baldwin Gegenheimer Gmbh | Vorrichtung einer Druckmaschine |
US5713062A (en) * | 1996-09-26 | 1998-01-27 | Xerox Corporation | Color mixing and control system for use in an electrostatographic printing machine |
JP3843584B2 (ja) * | 1998-03-20 | 2006-11-08 | 大日本インキ化学工業株式会社 | 感熱性組成物およびそれを用いた平版印刷版原版および印刷刷版作製方法 |
US6947175B1 (en) * | 2000-07-31 | 2005-09-20 | Xerox Corporation | Method and system for adjusting color mixing due to substrate characteristics |
US6917424B2 (en) * | 2001-03-19 | 2005-07-12 | E. I. Du Pont De Nemours And Company | Process for manufacturing pigment dispersions |
US6575096B1 (en) * | 2001-11-07 | 2003-06-10 | Xerox Corporation | Computer controlled mixing of customer-selected color inks for printing machines |
US6682865B2 (en) * | 2001-11-21 | 2004-01-27 | Xerox Corporation | Hybrid electrophotographic apparatus for custom color printing |
DE102005003372B4 (de) * | 2005-01-24 | 2024-04-18 | Gunther Krieg | Verfahren und Vorrichtung zum Regeln der Konzentration von Komponenten von Additiven in einer Druck- Prozessflüssigkeit |
-
2003
- 2003-07-24 DE DE10333625A patent/DE10333625B4/de not_active Expired - Lifetime
-
2004
- 2004-07-21 US US10/895,388 patent/US20050061188A1/en not_active Abandoned
- 2004-07-23 EP EP04017479.9A patent/EP1500499B2/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10333625B4 (de) | 2009-04-02 |
DE10333625A1 (de) | 2005-02-24 |
EP1500499B1 (fr) | 2016-01-20 |
US20050061188A1 (en) | 2005-03-24 |
EP1500499A1 (fr) | 2005-01-26 |
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