High density interconnect apparatus for an ink jet printhead
US5345256A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Feb 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14379
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The body of a piezoelectrically operable ink jet printhead is mounted in an upper side surface groove formed in a mounting plate member. A rear bottom section of the printhead body has an exposed top side surface portion which is flush with the top side of the mounting plate member and terminates forwardly of its rear end. A high density parallel array of mutually spaced linear conductive traces is formed on this exposed top side surface portion of the printhead body, these traces being used to transmit electrical operating signals from a separate electronic driver to piezoelectrically drivable channel sidewall sections within the interior of the printhead body. A multi-tiered printed circuit board secured to the top side of the mounting plate member is used to connect the printhead to the electronic driver. The circuit board has a series of linear traces formed on its bottom side which register with and are soldered to the closely spaced printhead body traces, a spaced series of lower density spacing contact pads formed on its top side and releasably engageable with correspondingly spaced contact pads on the electronic driver, and internal crossover circuitry that operatively conn…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.