Toner cartridge seal
US5404212A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Sep 24, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A technique for providing an easy to remove leak-proof seal for shipment of a remanufactured toner cartridge. An adhesive-backed sealing strip is disposed over the feed roller of the hopper so that a seal is formed between the mylar blades and the feed roller. The excess portion of the sealing strip is then passed through a foam wiping assembly and out through a slit in the lid of the hopper. The toner is poured into the hopper over the sealed feed roller and the lid is then sealed onto the hopper prior to shipment. Upon receipt by the customer, the excess portion of the sealing strip extending out through the slit in the lid is simply pulled until the sealing strip is completely removed from the feed roller. Excess toner is removed from the sealing strip by the foam wiping assembly so that no toner escapes the hopper to leak onto the user's clothing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.