Fabrication of electrophotographic imaging members
US5273583A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | May 1, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0329
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for the continuous coating of charge transport solutions onto a substrate to form an electrophotographic imaging member, including a pump to a flow of a first highly doped charge transport solution and a pump to a flow of a second undoped or lowly doped charge transport solution at predetermined rates to a common junction at which the flows intermix into a common flow upon contacting each other; piping connecting the pumping means to the common junction; and mixing device associated with the junction for continuously mixing the common flow during its movement through the mixing device, the mixing device having a short spiral flow path of less than about 200 cm for the solutions sufficient to substantially complete mix the common flow during its movement through the mixing means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.