Claims:1. A dispensing system (100) for dispensing a mixture of solvents in a predefined proportion in an ink pan (114), the dispensing system (100) comprising:
at least one first tank (102-1, 102-2, 102-3, and 102-4) to store a solvent;
at least one second tank (106-1, 106-2, 106-3, and 106-4) fluidly coupled to the at least one first tank (102-1, 102-2, 102-3, and 102-4) to receive the solvent from the at least one first tank (102-1, 102-2, 102-3, and 102-4) to form an ink;
a first pumping unit (104) fluidly coupled to the at least one first tank (102-1, 102-2, 102-3, and 102-4) and the at least one second tank (106-1, 106-2, 106-3, and 106-4) to provide the solvent to the at least one second tank (106-1, 106-2, 106-3, and 106-4), based on a composition of the ink and a capacity of the at least one second tank (106-1, 106-2, 106-3, and 106-4);
an ink pan (114) to receive the ink from the at least one second tank (106-1, 106-2, 106-3, and 106-4); and
a duct (116) to couple the at least one second tank (106-1, 106-2, 106-3, and 106-4) to the ink pan (114), the duct (116) further comprising:
a second pumping unit (118) coupled between the at least one second tank (106-1, 106-2, 106-3, and 106-4) and the ink pan (114) to deliver the ink from the at least one second tank (106-1, 106-2, 106-3, and 106-4) to the ink pan (114), wherein the second pumping unit (118) is to be switched on based on a viscosity of the ink in the ink pan (114); and
a non-return valve (120) to prevent a flow of the ink into the second pumping unit (118) when the second pumping unit (118) is switched off.

2. The dispensing system (100) as claimed in claim 1, comprising a level sensor (112) installed in the at least one second tank (106-1, 106-2, 106-3, and 106-4) to measure a level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4), wherein the lever sensor (112) comprises:
a low level sensor (112-1) fixedly attached near a bottom of the at least one second tank (106-1, 106-2, 106-3, and 106-4) to indicate a minimum admissible level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4); and
an high level sensor (112-2) fixedly attached near a top of the at least one second tank (106-1, 106-2, 106-3, and 106-4) to indicate a maximum admissible level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4).

3. The dispensing system (100) as claimed in claim 2, comprising a controller (124) to receive level signals from the level sensor (112) and operate the first pumping unit (104) to regulate a level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4).

4. The dispensing system (100) as claimed in claim 1, comprising:
a flow meter (108) coupled between the at least one first tank (102-1, 102-2, 102-3, and 102-4) and the at least one second tank (106-1, 106-2, 106-3, and 106-4) to measure a flow of the solvent from the at least one first tank (102-1, 102-2, 102-3, and 102-4) to the at least one second tank (106-1, 106-2, 106-3, and 106-4);
at least one first valve (110-1, 110-2, 110-3, and 110-4) coupled between the flow meter (108) and the at least one first tank (102-1, 102-2, 102-3, and 102-4) to regulate the flow of the solvent; and
at least one second valve (110-5, 110-6, 110-7, and 110-8) coupled between the flow meter (108) and the at least one second tank (106-1, 106-2, 106-3, and 106-4), to regulate the flow of the solvent;

5. The dispensing system (100) as claimed in claim 4, comprising a controller (124) to regulate the flow of the solvent from the at least one first tank (102-1, 102-2, 102-3, and 102-4) to the at least one second tank (106-1, 106-2, 106-3, and 106-4) based on inputs from the flow meter (108), wherein the controller (124) is to,
adjust an opening and closing of the at least one first valve (110-1, 110-2, 110-3, and 110-4) and of the at least one second valve (110-5, 110-6, 110-7, and 110-8); and
control the first pumping unit (104).

6. The dispensing system (100) as claimed in claim 1, comprising a viscosity sensor (122) installed in the ink pan (114) to determine a viscosity of the ink in the ink pan (114).

7. The dispensing system (100) as claimed in claim 6, comprising a controller (124) to receive the viscosity signal from the viscosity sensor (122) and to operate the second pumping unit (118) based on the viscosity signal.

8. A method for dispensing ink, the method comprising:
supplying a predetermined amount of solvent from at least one first tank (102-1, 102-2, 102-3, and 102-4) to at least one second tank (106-1, 106-2, 106-3, and 106-4), based on a capacity of the at least one second tank (106-1, 106-2, 106-3, and 106-4) and a composition of ink to be achieved;
conveying, by a duct (116), the solvent from the at least one second tank (106-1, 106-2, 106-3, and 106-4) to an ink pan (114), wherein the conveying comprises,
operating a second pumping unit (118) provided in the duct (116) to deliver the ink from the at least one second tank (106-1, 106-2, 106-3, and 106-4) to the ink pan (114) based on the viscosity of the ink in the ink pan (114); and
switching off the second pumping unit (118) when a predetermined viscosity of the ink in the ink pan (114) is achieved.

9. The method as claimed in claim 8, wherein the supplying comprises:
measuring a level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4), wherein the measuring comprises:
sensing a minimum admissible level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4); and
sensing a maximum admissible level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4); and
operating the first pumping unit (104) to regulate a level of the ink in the at least one second tank (106-1, 106-2, 106-3, and 106-4), based on the measuring.

10. The method as claimed in claim 8, wherein the method further comprises:
regulating a flow of the solvent from the at least one first tank (102-1, 102-2, 102-3, and 102-4) to the at least one second tank (106-1, 106-2, 106-3, and 106-4) based on the flow of the solvent from the at least one first tank (102-1, 102-2, 102-3, and 102-4) to the at least one second tank (106-1, 106-2, 106-3, and 106-4), wherein the regulating comprises:
adjusting an opening and closing of an at least one first valve (110-1, 110-2, 110-3, and 110-4) and of an at least one second valve (110-5, 110-6, 110-7, and 110-8), between the at least one first tank (102-1, 102-2, 102-3, and 102-4) and the at least one second tank (106-1, 106-2, 106-3, and 106-4); and
controlling the first pumping unit (104).
, Description:As Attached