Method for filling and fabricating ink jet cartridge
US5874978A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/1665
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for filling an ink reservoir of an ink-jet cartridge. A cartridge is provided which includes a frame structure having an external frame structural member fabricated from a first rigid plastic material and an inner frame member fabricated from a second plastic material, the inner member lining an interior surface of the external frame member. The cartridge has first and second impervious membranes joined to the inner frame member to form, with the inner frame member, an ink reservoir for holding a supply of ink, and an ink fill port comprising a passage-way defined through the external frame member, the passage-way lined with said second material of said inner member and communicating with the interior of the reservoir. Ink is released into the reservoir from an ink supply through the fill port, which is then sealed. A method for forming a leak-resistent joint between the first and second plastic materials includes molding the second material into a predetermined first structure including a cavity defining the external periphery of an interior standpipe member, positioning the first structure into a mold for injecting the first material, injecting the first material in a mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.