Printer or copier with an arrangement for printing both sides of a recording medium
US5420662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1994 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Apr 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1695
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A printer or copier operating according to the transfer printing principle containing an arrangement for printing the front and/or the back of a recording medium. The apparatus contains a photoconductor drum and a thermoadhesive transfer ribbon which is coupled to the photoconductor drum. The transfer ribbon proceeds to a transfer printing and fusing station formed by the transfer ribbon on one side and a heated roller on an opposite side in elastic contact thereto. A first toner image for the back of the recording medium and a second toner image for the front of the recording medium are produced on a photoconductor drum and transferred to the transfer ribbon in this order. The heated roller first receives a toner image for the back of the recording medium. Thereafter, the recording medium is fed to the fusing gap and simultaneous transmission and fusing of the toner image on both sides of the recording medium takes place by the transfer ribbon and the heated roller moving across both sides of the recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.