Apparatus for depositing liquid colour on a substrate

B - Operations – Transporting – 05 – B

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103/30, 32/64

B05B 1/00 (2006.01) B41F 1/40 (2006.01) B41F 31/08 (2006.01)

Patent

CA 1164200

An apparatus for depositing discrete volumes of liquid colour on a substrate including at least one dispensing pump connected between a respective container for colour to be deposited and a respective deposition orifice, characterized in that the or each pump comprises a pump unit including a cylinder, a piston movable therein and an inlet and outlet for liquid colour respectively connected to the container and the orifice, and an actuator unit including a cylinder and a piston movable therein, the pump unit being detachably and replaceably secured to the actuator unit with the pump cylinder and pump piston connected between the actuator cylinder and actuator piston, and the or each actuator cylinder being connected to a source of pneumatic pressure. The apparatus preferably comprises a plurality of dispensing pumps, the actuator cylinder of each pump being connected to a manifold communicating with a source of pneumatic pressure. Liquid colour may be supplied to the dispensing pumps from a flexible container provided with an external agitator. The preferred agitator is an inflatable sleeve extending around the container.

366429

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