Pressure control system for printing a viscous material

Details Pressure control system for printing a viscous material Pressure control system for printing a viscous material

2005-10-18

2005-10-18

Yan, Ren (Department: 2854)

Printing

Stenciling

Traveling-inker machines

C101S124000

Reexamination Certificate

active

06955120

ABSTRACT:
A printer includes a print head for dispensing viscous material, such as solder paste. The print head defines a chamber and includes at least one source port and a dispensing slot. Within the chamber, a flexible membrane segregates the chamber into a dispensing region and an activation region. Viscous material flows from a supply mounted to the source port, into the dispensing region and out the slot. A displacement mechanism is positioned to displace the flexible membrane to reduce the volume of dispensing region and to thereby dispense viscous material through the slot. The print head also includes a removable envelope through which the viscous material flows and contacts as it passes through the envelope.

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International Search Report for PCT/US2004/009473 mailed Jul. 28, 2004.

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