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Electrical interconnection utilizing raised contacts on flex circuits

A flexible circuit, contact pad technology, applied in the field of electrical interconnection, can solve the problem of expensive interconnection between the drive circuit and the transducer/actuator

Inactive Publication Date: 2016-05-11
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current approaches make the interconnection between drive circuits and transducers / actuators expensive and may not enable manufacturable and reliable interconnections at the desired increased density and reduced size

Method used

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  • Electrical interconnection utilizing raised contacts on flex circuits
  • Electrical interconnection utilizing raised contacts on flex circuits
  • Electrical interconnection utilizing raised contacts on flex circuits

Examples

Experimental program
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Effect test

Embodiment Construction

[0058] figure 1 A cross-sectional view of a portion of the printhead 10 is shown. The part of the printhead shown here shows a nozzle stack 11 which typically consists of a series of brazed metal plates or a combination of metal plates with polymer or adhesive layers. As oriented in the figure, the nozzle or aperture plate will be located at the bottom of the nozzle stack 11 . A transducer array such as 12 is located on the surface of the nozzle stack opposite the nozzle plate, in this example the top of the nozzle stack 11 . The transducers are electrically connected to the drive circuit 18 by a conductive adhesive typically dispensed into holes in the standoff layer 14 . With increased orifice density and tighter spacing, the connection between the driver circuit and the orifice stack 11 becomes more difficult to maintain.

[0059] Some approaches have begun to use flexible circuit substrates, for example, by mounting driver chips on flexible circuits using techniques lik...

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PUM

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Abstract

The present invention discloses an electrical interconnect utilizing a floating convex contact on a flexible circuit. A printhead having: a spout stack, which has a nozzle array; a transducer array, which is arranged on the nozzle stack, so that each transducer corresponds to a nozzle in the nozzle array; and a flexible circuit substrate, which is adjacent to the transducer array arrangement, such that the contact pad on the flexible circuit substrate is electrically connected to at least some of the transducers in the transducer array, the flexible circuit substrate is molded, so that the contact pad protrudes from the plane of the flexible circuit substrate. A method of manufacturing a printhead comprising: forming a nozzle stack having a nozzle array; the transducer array is arranged on the nozzle stack, such that each transducer in the transducer array corresponds to a nozzle in the nozzle array; molded with a flexible circuit substrate having a contact pad, such that the contact pad protrudes from the plane of the flexible circuit substrate; and a flexible circuit substrate is arranged so that the contact pad is electrically connected to at least some of the transducer in the transducer array.

Description

technical field [0001] The present invention relates to printhead design, and more particularly to electrical interconnections utilizing raised contacts on flex circuits. Background technique [0002] Current trends in printhead design involve increasing orifice packing density and orifice count while reducing the cost of the printhead. A "jet," also known as a nozzle, dropmitter, or ejection port, usually consists of an aperture or hole in a plate through which ink is expelled to a print on the surface. Higher density and higher count nozzles produce higher resolution and higher quality printed images. [0003] Each nozzle has a corresponding actuator, some kind of transducer that converts an electrical signal into a mechanical force that moves ink out of the nozzle. Electrical signals are typically generated from image data and a print controller that instructs which nozzles need to discharge ink during which intervals to form the desired image. Examples of transducers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/14
CPCB41J2/14072B41J2/14201B41J2/1601B41J2/1607B41J2/1623B41J2/1631B41J2/1632B41J2/1634B41J2002/14491Y10T29/49401B41J2/01
Inventor T·L·斯蒂芬斯D·L·马索普斯特J·R·安德鲁斯C·J·拉哈蒂
Owner XEROX CORP