Jetting apparatus and method of improving the performance of a jetting apparatus
First Claim
1. A jetting apparatus for jetting individual droplets of viscous medium onto a substrate, comprising:
- a jetting device having a jetting outlet through which said droplets are jetted,a vacuum ejector configured to produce a negative pressure for producing a flow of air past the jetting outlet for removing viscous medium residue at the jetting outlet,a receptacle for receiving viscous medium residue transported by said air flow away from the jetting outlet,an air flow path for said air flow between said jetting outlet and said vacuum ejector, via said receptacle,an air flow meter for measuring the air flow in said air flow path, said air flow meter including a flow sensor positioned in the air flow path between said jetting outlet and said vacuum ejector, said air flow meter being arranged for outputting an air flow signal representative of the air flow in the air flow path, anda processor arranged for receiving said flow signal from the air flow meter, evaluating said flow signal, and outputting an indication of a status of the jetting apparatus.
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Accused Products
Abstract
A jetting apparatus for jetting droplets of viscous medium onto a substrate and a method of improving the performance of the jetting apparatus are provided. The jetting apparatus includes a jetting outlet through which the droplets are jetted, a flow generator for producing a flow of air past the jetting outlet for removing viscous medium residue at the jetting outlet, a receptacle for receiving viscous medium residue transported by the air flow away from the jetting outlet, and a flow path for the air flow between the jetting outlet and the flow generator, via the receptacle. A flow sensor is arranged in the flow path for measuring the air flow. An air flow signal representative of the air flow is obtained, the air flow signal is evaluated for determining at least one status of the jetting apparatus, and an indication of the status is provided.
17 Citations
18 Claims
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1. A jetting apparatus for jetting individual droplets of viscous medium onto a substrate, comprising:
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a jetting device having a jetting outlet through which said droplets are jetted, a vacuum ejector configured to produce a negative pressure for producing a flow of air past the jetting outlet for removing viscous medium residue at the jetting outlet, a receptacle for receiving viscous medium residue transported by said air flow away from the jetting outlet, an air flow path for said air flow between said jetting outlet and said vacuum ejector, via said receptacle, an air flow meter for measuring the air flow in said air flow path, said air flow meter including a flow sensor positioned in the air flow path between said jetting outlet and said vacuum ejector, said air flow meter being arranged for outputting an air flow signal representative of the air flow in the air flow path, and a processor arranged for receiving said flow signal from the air flow meter, evaluating said flow signal, and outputting an indication of a status of the jetting apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification