Process for recycling and refurbishment of water-wipe intaglio inks used in water wipe intaglio printing
OwnerAndre R. L. Monneratinventor
Life of this patent
Estimating the term…
Abstract
A process is disclosed in which ink contained in a water-wipe solution used in the intaglio printing of security documents is recycled after being refurbished. The water-wipe solution is neutralized; the ink is separated by filtration and refurbished before being utilized.
Claims44
A method for recovering wasted intaglio ink which is wasted in an intaglio printing process;
- said method comprising the steps of:
- mixing the wasted ink with an alkaline or acid aqueous solution to form an ink/water mixture;
- neutralizing the ink/water mixture to a pH of 5 to 10 with an acid, base or a buffer;
- and then
- separating the ink and a portion of the water from the mixture to recover ink having a water content of about 1% to 45% by weight.
A method for recovering wasted intaglio ink which is wasted in an intaglio printing process;
- said method comprising the steps of:
- mixing the wasted ink with an alkaline or acid aqueous solution to form an ink/water mixture;
- neutralizing the ink/water mixture to a pH of 5 to 10 with an acid, base or a buffer;
- and then
- separating the ink and a portion of the water from the mixture to recover ink having a water content of 1% to 50% by weight.
A method for recovering wasted intaglio ink which is wasted in an intaglio printing process;
- said method comprising the steps of:
- mixing the wasted ink with water having a neutral pH to form a water/ink mixture;
- adding up to 15% by weight of an ionic or nonionic surfactant to the mixture;
- and then
- separating the ink and a portion of the water from the mixture to recover ink having a water content of 1% to 50% by weight.
A method for recovering intaglio ink which has become mixed with a water-wipe solution during an intaglio printing process;
- said method comprising the steps of:
- wiping excessive intaglio ink from the surface of a device used in an intaglio printing process wherein said ink is wiped with an alkaline water-wipe solution to form a mixture containing ink and water;
- adjusting the pH of the mixture to a value of 5 to 9;
- and
- separating the ink and a portion of the water from the mixture to recover ink having a water content of about 1% to 45% by weight.
A method for recovering intaglio ink which has become mixed with a water-wipe solution during an intaglio printing process;
- said method comprising the steps of:
- wiping excessive intaglio ink from the surface of a device used in an intaglio printing process wherein said ink is wiped with a water-wipe solution having a neutral pH to form a mixture containing ink and water;
- adding up to 15% by weight of an ionic or nonionic surfactant to the mixture;
- and
- separating the ink and a portion of the water from the mixture to recover ink having a water content of about 1% to 45% by weight.
A method for recovering intaglio ink which has become mixed with a water-wipe solution during an intaglio printing process;
- said method comprising the steps of:
- wiping excessive intaglio ink from the surface of a device used in acid intaglio printing process wherein said ink is wiped with an alkaline water-wipe solution to form a mixture containing ink and water;
- adjusting the pH of the mixture to a value of 5 to 10;
- and
- separating the ink and a portion of the water from the mixture to recover ink having a water content of about 1% to 50% by weight.
A method for recovering wasted intaglio ink which is wasted in an intaglio printing process;
- said method comprising the steps of mixing the wasted ink with water having a neutral pH to form a water/ink mixture and then separating the ink and a portion of the water from the mixture to recover ink having a water content of 1% to 50% by weight.
A method for recovering wasted intaglio ink which is wasted in an intaglio printing process;
- said method comprising the steps of:
- mixing the wasted ink with an alkaline or acid aqueous solution to form an ink/water mixture;
- separating the ink and a portion of the water from the mixture to recover ink having a water content of about 1% to 50% by weight;
- and then
- neutralizing the recovered ink having said water content of 1% to 50% by weight with an acid, base or buffer to produce a pH of 5 to 10.
Dependencies are inferred from the claim text.