Delphax Systems

Other

Hemant M Gandhi

Robert S McCallum

Dolf Landheer

Paul E Plasschaert

Brian McIntosh

A charge transfer imaging cartridge features driver electrodes extending in a first direction and finger electrodes extending in a second direction and defining edge structure straddling the driver electrodes. The driver and finger electrodes are separated by a flexible dielectric layer, preferably a silicone modified polymer.

Charge transfer imaging cartridge

The invention provides a method of making an ionographic cartridge for use with a dielectric coated drum to lay electrostatic images on the drum for subsequent toning. The method includes the steps of making a printed circuit board carrying on one of its faces a plurality of driver electrodes; attaching to the face of the board a dielectric layer sufficient to cover the driver electrodes; providing finger electrodes supported individually between parallel strips of dielectric tapes; and adhering the finger electrodes to the dielectric layer with the finger electrodes straddling the driver electrodes and the tapes spaced to either side of the printed circuit board.

Ionic print cartridge and printer

In one of its aspects the invention provides an ionographic print cartridge for use in placing discrete dots of electrostatic charge on a drum to build a latent image for subsequent toning. The print cartridge includes a substrate of a dielectric material having sufficient rigidity to resist deformation during assembly; driver electrodes printed on the substrate and consisting of parallel conductors extending longitudinally and having lead portions terminating at the conductors and extending generally transversely from ends of the conductors for making electrical connections to the driver electrodes. A dielectric layer covers at least the conductors with the conductors at a first side of the layer, and finger electrodes are positioned at the opposite side of the dielectric layer. The finger electrodes define edge structures straddling the driver electrodes and having individual contacts at the sides of the driver electrodes for making electrical connections to the finger electrodes. A method of manufacture is also described.

Growing community of inventors

Toronto, Canada

Hemant M Gandhi