| CPC B43M 5/042 (2013.01) | 10 Claims |

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1. A method for sealing and flipping an envelope, the method comprising:
receiving a body of an envelope face-down between a pair of nip rollers mounted to a frame;
wetting a flap of the envelope to activate an adhesive substance thereon, wherein wetting the flap comprises:
lowering a moveable brush into contact with the flap portion prior to rotating the frame, wherein the moveable brush is actuated by a servomotor; and
setting a brush contact height by recording a position at which the moveable brush contacts a moistening pad with the servomotor in an open loop mode;
rotating the frame with the body of the envelope secured between the nip rollers to flip the envelope face-up and to cause the flap to bear against a paper guide to form a bend between the flap and the body; and
drawing the bend into a sealer nip with the envelope face-up to press the adhesive substance against the body, to form a seal between the flap and the body of the envelope.
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