Printhead structure in an image recording device

Details Printhead structure in an image recording device Printhead structure in an image recording device

1998-03-04

2000-06-13

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 50, 347120, B41J 2415

Patent

active

060740450

ABSTRACT:
An image recording apparatus includes a toner particle source for delivering charged toner particles to an image receiving medium. The image recording apparatus further includes a printhead structure arranged between the toner particle source and the image receiving medium to modulate a transport of toner particles from the particle source to the image receiving medium. The printhead structure includes a substrate of electrically insulating material having a first surface facing the toner particle source and a second surface facing the image receiving member. A first cover layer of electrically insulating material is arranged on the first surface of the substrate. A plurality of apertures are arranged through the printhead structure. A first printed circuit including control electrodes is arranged between the substrate and the first cover layer to control the transport of toner through the apertures and a spacer layer of wear-resistant material at least partially coats the first cover layer to space the first cover layer from the toner particles on the particle source.

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