EP2138307A1 - Ink re-use system for printing machines - Google Patents
Ink re-use system for printing machines Download PDFInfo
- Publication number
- EP2138307A1 EP2138307A1 EP09008190A EP09008190A EP2138307A1 EP 2138307 A1 EP2138307 A1 EP 2138307A1 EP 09008190 A EP09008190 A EP 09008190A EP 09008190 A EP09008190 A EP 09008190A EP 2138307 A1 EP2138307 A1 EP 2138307A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- tank
- additional
- cleaning agent
- diluted
- 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.)
- Withdrawn
Links
- 239000012459 cleaning agent Substances 0.000 claims abstract description 13
- 239000003086 colorant Substances 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2231/00—Inking devices; Recovering printing ink
- B41P2231/20—Recovering printing ink
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2235/00—Cleaning
- B41P2235/30—Recovering used solvents or residues
Definitions
- the object of the present invention is an ink re-use system for printing machines that incorporates appreciable innovations and advantages.
- the invention is related to a system for the re-use of diluted ink coming from the cleaning processes for printing machines, in particular flexographic and rotogravure types of printing machines.
- the flexographic and rotogravure printing machines are provided with automatic cleaning systems for the inking assemblies.
- These systems allow the circulation of a solvent across the inking circuits that acts as a cleaning element that is then discharged into a common tank, in such a way that if the printing has eight colours, the liquid obtained from the cleaning of each one of the printing assemblies and which hereafter will be called diluted ink "DI", is going to end up in a common tank where a dark coloured "DI" is obtained due to the mix of the "DI" of differing colours, as can be seen in figure 1 .
- this DI is subjected to a distillation process obtaining the solvent and the ink sludge which is then sent to a waste treatment company so as to be dealt with in an incineration process.
- the printing machine has automatic viscosity control systems which, during the printing process, add solvent to the ink.
- the present invention has been developed for the purpose of providing a DI ink re-use system that solves the above-mentioned disadvantages, in addition contributing other additional advantages that will become clear from the description that is given below.
- an ink re-use system for printing machines wherein a plurality of individual tanks is provided for the differing colours, one tank with a clean cleaning agent, one tank for the collection of the dirty cleaning agent, and which is characterised in that it includes at least one additional tank for the collection of the ink that has been diluted and transferred, in such a way that it establishes a bi-directional relationship between at least one additional tank and one of the individual tanks filled with coloured ink.
- a pipe that sends the diluted ink from the individual tank full of ink to the additional tank and a second pipe that sends the diluted ink from the additional tank to the individual tank full of ink.
- said by-pass means that associates the additional tank to the diluted ink, the tank with the dirty cleaning agent and the tank full of ink for printing.
- said by-pass device consists of an electro-valve governed by a PLC ("programmable logic controller").
- system can be provided with some means of colour detection associated to the by-pass means in such a way that in line with the colour detected it sends a signal to the PLC to open or close the passage defined between the tank full of ink and the additional tank.
- ink viscosity detection means associated to the by-pass means can be provided in such a way that depending on the viscosity level detected it sends a signal to the PLC to open or close the passage defined between the tank full of ink and the additional tank.
- an embodiment of the ink re-use system for flexographic printing machines in accordance with the invention is provided with a plurality of individual tanks 1, 2, 3, 4, 5, 6, 7, 8 for differing colours, one tank with clean cleaning agent 9 connected by means of a circulation pipe 10 to one of the individual tanks 8, in this case corresponding to the tank that stores the white ink, a tank for the collection of the dirty cleaning agent 11 and a tank with the solvent 12 that can be any type of suitable solvent that is known in the art hence greater detail is not going to be entered into.
- This system is in addition provided with a pipe 13 that sends the diluted ink from the individual tank full of white ink 8 to an additional tank 14 with the help of a pump 16 and a second pipe 15 that sends the diluted ink from the additional tank 14 to the individual tank full of ink 8 in such a way that it allows the re-use of the diluted ink that was previously treated in an earlier cleaning stage.
- Tank 9 and tank 12 are connected to each other by means of a pipe 19 and is provided with an impulsion pump 20 in order to supply solvent to the clean cleaning agent when it is thus required.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
- The object of the present invention is an ink re-use system for printing machines that incorporates appreciable innovations and advantages.
- More specifically, the invention is related to a system for the re-use of diluted ink coming from the cleaning processes for printing machines, in particular flexographic and rotogravure types of printing machines.
- At the present time the flexographic and rotogravure printing machines are provided with automatic cleaning systems for the inking assemblies. These systems allow the circulation of a solvent across the inking circuits that acts as a cleaning element that is then discharged into a common tank, in such a way that if the printing has eight colours, the liquid obtained from the cleaning of each one of the printing assemblies and which hereafter will be called diluted ink "DI", is going to end up in a common tank where a dark coloured "DI" is obtained due to the mix of the "DI" of differing colours, as can be seen in
figure 1 . - Subsequently this DI is subjected to a distillation process obtaining the solvent and the ink sludge which is then sent to a waste treatment company so as to be dealt with in an incineration process.
- On the other hand the printing machine has automatic viscosity control systems which, during the printing process, add solvent to the ink.
- The present invention has been developed for the purpose of providing a DI ink re-use system that solves the above-mentioned disadvantages, in addition contributing other additional advantages that will become clear from the description that is given below.
- Therefore, it is the object of the invention to provide an ink re-use system for printing machines wherein a plurality of individual tanks is provided for the differing colours, one tank with a clean cleaning agent, one tank for the collection of the dirty cleaning agent, and which is characterised in that it includes at least one additional tank for the collection of the ink that has been diluted and transferred, in such a way that it establishes a bi-directional relationship between at least one additional tank and one of the individual tanks filled with coloured ink.
- Thanks to these characteristics, an appreciable reduction of the amount of diluted dark ink is achieved with the consequent saving of the amount to be distilled (which means a saving of time and energy) likewise the amount of waste sent to the waste companies for their subsequent incineration as a certain amount of the diluted ink can be re-used.
- In accordance with a preferred embodiment, it is provided with a pipe that sends the diluted ink from the individual tank full of ink to the additional tank and a second pipe that sends the diluted ink from the additional tank to the individual tank full of ink.
- Advantageously, it is provided by-pass means that associates the additional tank to the diluted ink, the tank with the dirty cleaning agent and the tank full of ink for printing. By preference, said by-pass device consists of an electro-valve governed by a PLC ("programmable logic controller").
- Additionally, the system can be provided with some means of colour detection associated to the by-pass means in such a way that in line with the colour detected it sends a signal to the PLC to open or close the passage defined between the tank full of ink and the additional tank.
- Also, ink viscosity detection means associated to the by-pass means can be provided in such a way that depending on the viscosity level detected it sends a signal to the PLC to open or close the passage defined between the tank full of ink and the additional tank.
- Other characteristics and advantages of the ink re-use system device object of the present invention will become clear from a description of a preferred embodiment, which is not exclusive, shown in the drawings by way of illustration but without being in any way limiting.
-
-
Figure 1 . - This is an outline view of an ink re-use system for a flexographic printing machine of the prior art; and -
Figure 2 . - This is an outline view of an ink re-use system in accordance with the present invention. - As shown in
figure 2 , an embodiment of the ink re-use system for flexographic printing machines in accordance with the invention is provided with a plurality ofindividual tanks clean cleaning agent 9 connected by means of acirculation pipe 10 to one of the individual tanks 8, in this case corresponding to the tank that stores the white ink, a tank for the collection of thedirty cleaning agent 11 and a tank with thesolvent 12 that can be any type of suitable solvent that is known in the art hence greater detail is not going to be entered into. - This system is in addition provided with a
pipe 13 that sends the diluted ink from the individual tank full of white ink 8 to anadditional tank 14 with the help of apump 16 and asecond pipe 15 that sends the diluted ink from theadditional tank 14 to the individual tank full of ink 8 in such a way that it allows the re-use of the diluted ink that was previously treated in an earlier cleaning stage.Tank 9 andtank 12 are connected to each other by means of apipe 19 and is provided with animpulsion pump 20 in order to supply solvent to the clean cleaning agent when it is thus required. - It is provided by-pass means which associates the
additional tank 14, the tank withdirty cleaning agent 11 to a tank full of ink 8, said by-pass means being a membrane electro-valve 17 commanded by aPLC commander 18. - On the basis of the aforementioned and within the scope of the invention, it is obvious that other additional tanks can be added which are associated to other tanks to differing ink colours.
- The details, shapes, sizes and other accessorial elements, likewise the materials used in the manufacture of the system of the invention can be appropriately substituted by others that are technically equivalent and do not stray away from the essentiality of the invention or the scope defined by the claims that are included below.
Claims (7)
- An ink re-use system for printing machines wherein a plurality of individual tanks (1, 2, 3, 4, 5, 6, 7, 8) is provided for differing colours, one tank with a clean cleaning agent (9) and one tank for the collection of the dirty cleaning agent (11), characterised in that it comprises at least one additional tank (14) for the collection of the ink that has been diluted and transferred, in such a way that it establishes a bi-directional relationship between at least one additional tank (14) and one of the individual tanks filled with coloured ink.
- A system according to claim 1, characterised in that it is provided with a pipe (13) that sends the diluted ink from the individual tank full of ink (8) to the additional tank (14) and a second pipe that sends the diluted ink from the additional tank (14) to the individual tank full of ink.
- A system according to claim 1, characterised in that it is provided with by-pass means that associates the additional tank (14) with the dirty cleaning agent tank (11) and a tank full of ink (8) for the printing.
- A system according to claim 3, characterised in that the by-pass means consists of an electro valve (17) commanded by a PLC (18).
- A system according to claims 1, 3 and 4,
characterised in that colour detection means is provided associated to the by-pass means in such a way that depending on the colour detected it sends a signal to the PLC (18) to open or close the passage defined between the tank full of ink and the additional tank (14). - A system according to claims 1, 3 and 4,
characterised in that it is provided ink viscosity detection means associated to the by-pass means in such a way that depending on the level of viscosity detected it sends a signal to the PLC (18) to open or close the passage defined between the tank full of ink and the additional tank (14). - A system according to claim 1, characterised in that it includes a tank filled provided with a solvent, connected to a tank with a clean cleaning agent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200801937A ES2342526B1 (en) | 2008-06-27 | 2008-06-27 | INK REUSING SYSTEM FOR PRINTING MACHINES. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2138307A1 true EP2138307A1 (en) | 2009-12-30 |
Family
ID=41114584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09008190A Withdrawn EP2138307A1 (en) | 2008-06-27 | 2009-06-23 | Ink re-use system for printing machines |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2138307A1 (en) |
ES (1) | ES2342526B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0739729A2 (en) * | 1995-04-27 | 1996-10-30 | Mitsubishi Jukogyo Kabushiki Kaisha | Printer ink exchange apparatus |
EP0955164A1 (en) * | 1998-05-04 | 1999-11-10 | MARQUIP, Inc. | Quick change ink supply for printer |
US20060061620A1 (en) * | 2004-09-22 | 2006-03-23 | Fuji Xerox Co., Ltd. | Ink jet recording apparatus and ink jet recording method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60196348A (en) * | 1984-03-17 | 1985-10-04 | Isowa Ind Co | Method for recovery and cleaning of ink in ink transfer mechanish and apparatus for achieving that |
JP4000773B2 (en) * | 2000-12-28 | 2007-10-31 | セイコーエプソン株式会社 | Inkjet recording device |
-
2008
- 2008-06-27 ES ES200801937A patent/ES2342526B1/en not_active Withdrawn - After Issue
-
2009
- 2009-06-23 EP EP09008190A patent/EP2138307A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0739729A2 (en) * | 1995-04-27 | 1996-10-30 | Mitsubishi Jukogyo Kabushiki Kaisha | Printer ink exchange apparatus |
EP0955164A1 (en) * | 1998-05-04 | 1999-11-10 | MARQUIP, Inc. | Quick change ink supply for printer |
US20060061620A1 (en) * | 2004-09-22 | 2006-03-23 | Fuji Xerox Co., Ltd. | Ink jet recording apparatus and ink jet recording method |
Also Published As
Publication number | Publication date |
---|---|
ES2342526B1 (en) | 2011-05-17 |
ES2342526A1 (en) | 2010-07-07 |
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RIC1 | Information provided on ipc code assigned before grant |
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Effective date: 20110629 |