Pneumatic toner transport device for an electrographic printing or copying machine
US5521690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1995 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | May 22, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pneumatic toner transport device for an electrographic printing or copying machine is used for transporting toner and for removing toner and/or dirt particles from units of the machine, such as developer station (10) and cleaning station (28). It contains a vacuum-producing device (31), which is connected via a vacuum duct system to the various units of the machine. Assigned to the duct system is a particle separator (24) in the form of a cyclone filter for separating toner and dirt particles out of an airstream flowing through. The particle mixture is separated in a recycling device into dirt particles and recyclable toner and the recyclable toner is supplied anew to the developer station. The dirt particles are collected in a fine filter (32) of the vacuum-producing device (31). The toner recycling device (25) is designed as an exchangeable constructional unit, which can be exchanged for a catchbox.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.