Ionic print cartridge and printer
US4679060A · kind A · utility
Inventors
Key dates
| Filing date | Nov 28, 1984 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Nov 28, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/415
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.