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Low Cost Method of Assembly of Wire Matrix Printhead Actuator Ring

IP.com Disclosure Number: IPCOM000046131D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Jenkins, WM: AUTHOR [+4]

Abstract

With the increasing usage of wire matrix printheads in office system printers, there have been extensive efforts to lower the cost of such printers. This article describes a method of printhead manufacture and particularly printhead actuator assembly manufacture which results in lowered cost. In matrix printers the actuators which usually form a circular array are used to drive the missiles which in turn selectively drive the actual wires into the ribbon medium to accomplish the printing.

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Low Cost Method of Assembly of Wire Matrix Printhead Actuator Ring

With the increasing usage of wire matrix printheads in office system printers, there have been extensive efforts to lower the cost of such printers. This article describes a method of printhead manufacture and particularly printhead actuator assembly manufacture which results in lowered cost. In matrix printers the actuators which usually form a circular array are used to drive the missiles which in turn selectively drive the actual wires into the ribbon medium to accomplish the printing.

The actuator array, as may be seen from the figure, is normally assembled, as shown, wherein there is an actuator ring mold 10 into which the individual actuators 11, 12 and 13 are set. The structure further contains a heat sink 14 having openings therein not shown for the passage of the pin 15 which connects the actuator to the underline or supporting circuit boards 16. In accordance with the present assembly procedure, the individual actuators 11, 12 and 13, for example, are placed into the ring mold 10. This ring mold is used to join all the actuators into a common plane. In addition, the mold mounts the actuators against a common heat sink 14 through which all of the actuator coils are connected into a common circuit board l6. After the molding is completed, the actuator ring is flow soldered across the bottom to terminate all the actuator coils at one time. With this approach, the handling or adjustment of t...