Method and apparatus for calibrating print head pressure and...

Details Method and apparatus for calibrating print head pressure and... Method and apparatus for calibrating print head pressure and...

2007-04-13

2010-10-05

Yan, Ren (Department: 2854)

Printing

Stenciling

Traveling-inker machines

C101S124000, C101S126000

Reexamination Certificate

active

07806048

ABSTRACT:
A stencil printer includes a frame, a stencil coupled to the frame, a substrate support coupled to the frame to support a substrate in a print position, and a print head, coupled to the frame, to deposit and print viscous material over the stencil. The print head includes a squeegee assembly having at least one squeegee blade and a squeegee blade movement mechanism configured to move the squeegee blade from a raised position in which the squeegee blade is spaced from stencil and a lowered position in which the squeegee blade engages and applies a force on the stencil. The print head further has a device to detect a first reference point associated with a first force of the squeegee blade against the stencil and a second reference point associated with a second force of the squeegee blade against the stencil when moving the squeegee blade to the lowered position in which the squeegee blade engages and applies a force on the stencil.

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