Apparatus and method for detecting the position of envelopes...

B - Operations – Transporting – 41 – K

Patent

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Details

B41K 1/38 (2006.01) B41K 3/54 (2006.01) B41L 27/10 (2006.01) G07B 17/00 (2006.01)

Patent

CA 2162508

An apparatus and method is disclosed for controlling the operation of a mailing machine having a postage meter which includes a thermal printer which transfers wax ink from an ink ribbon to an envelope being fed through the mailing machine, in such a way that the printer cannot operate if the envelope is not is a proper position in the mailing machine to completely cover a feed roller which controls movement of the envelope and the ink ribbon. The mailing machine includes a microprocessor that responds to sensors positioned along the feed path of the envelope to prevent initiation of a printing operation if an envelope is not properly positioned in the mailing machine, and which terminates an ongoing printing operation in the event, either that the envelope becomes skewed with respect to the normal direction of feed such that it will expose a portion of the feed roller, or that the envelope is too short to receive the entire image which is intended to be printed thereon before the trailing edge of the envelope would uncover the feed roller.

Appareil et méthode pour commander le fonctionnement d'une machine de traitement de courrier. Cette machine comprend une affranchisseuse incluant une imprimante thermique qui transfère l'encre à base de cire d'un ruban encreur à une enveloppe traversant la machine de traitement, de façon que l'imprimante ne peut pas fonctionner si l'enveloppe n'est pas dans la position voulue pour recouvrir complètement une courroie d'alimentation qui commande le déplacement de l'enveloppe et du ruban encreur. La machine de traitement de courrier inclut un microprocesseur qui répond aux détecteurs placés le long du trajet d'alimentation de l'enveloppe de façon à empêcher le commencement d'une opération d'impression si une enveloppe n'est pas bien placée dans la machine. Le microprocesseur arrête une opération d'impression en cours si l'enveloppe se désaligne par rapport à la direction normale de l'alimentation de façon à exposer une partie de la courroie, ou si l'enveloppe est trop courte pour recevoir l'image complète à y imprimer avant que le bord arrière de l'enveloppe ne découvre la courroie d'alimentation.

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