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Oscillating Piezoplaten for Printers

IP.com Disclosure Number: IPCOM000041325D
Original Publication Date: 1984-Jan-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Fischer, L: AUTHOR [+3]

Abstract

For increasing the print performance of impact printers, the impact speed of the print hammer on the platen is increased if the platen oscillates in a direction opposite to the flight direction of the hammers. The platen 0 comprises piezoelements 1, 2 positioned on either side of a flexible element 3 movable in the direction of the double arrow P and clamped on one side in holder 4. These piezoelements are electrically energized through lines L1 and L2, respectively, such that one piezoelement expands in the direction of arrow D1, while the other is contracted in the direction of arrow D2 (and vice versa in an alternating order). This leads to an oscillating movement of platen 0 in the direction of double arrow P, which corresponds to a sinusoidal time curve.

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Oscillating Piezoplaten for Printers

For increasing the print performance of impact printers, the impact speed of the print hammer on the platen is increased if the platen oscillates in a direction opposite to the flight direction of the hammers. The platen 0 comprises piezoelements 1, 2 positioned on either side of a flexible element 3 movable in the direction of the double arrow P and clamped on one side in holder 4. These piezoelements are electrically energized through lines L1 and L2, respectively, such that one piezoelement expands in the direction of arrow D1, while the other is contracted in the direction of arrow D2 (and vice versa in an alternating order). This leads to an oscillating movement of platen 0 in the direction of double arrow P, which corresponds to a sinusoidal time curve. Print hammer 5 must impact the platen in the direction H at the zero crossing of the sinusoidal function when the platen moves at maximum speed towards the hammer.

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