Importance

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Abstract

The screen printing press has pallet supports in the form of arms that carry movable pallets having substrates thereon between a plurality of printing stations to receive successive screen prints on the substrates. The pallet is shifted relative to the stationary support arm and is registered relative to a printing head at each of the print stations. Unlike conventional registration systems, where the support arm is shifted during registration as is the pallet which is fixed to the support arm, the pallet herein is releasably interlocked and is unlocked for shifting relative to the stationary support arm. When the pallet reaches a printing station, a movable pallet locator unlocks the pallet which is then free to float on the support arm. The movable locator shifts the floating pallet on the stationary support arm to engage a second locator, which is preferably fixed to the press frame and oppositely located from the movable locator. Preferably, the floating pallet is free to shift in and out, and left to right, as it registers between the opposed locators. After printing, the movable locator retracts and an actuator such as a spring causes the pallet to interlock again with its pallet support arm for travel to the next printing station.

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First Claim