Single paper sheet forming a two-sided copy of information entered on both sides thereof
US5154668A · kind A · utility
Inventor
Key dates
| Filing date | Mar 22, 1990 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Mar 22, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/124
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A single sheet of paper is divided into at least original and copy panels by fold line(s). Information entered on the two, front and back surfaces of the original panel are reproduced on the two surfaces of the copy panel by carbonless copy treatments. In one embodiment, the original panel is fully coated or partially coated with carbonless CB treatment, on both surfaces, and the copy panel is fully coated or partially coated with carbonless CF treatment. In a variation of this embodiment, the original panel is not coated, and the copy panel is coated in selected areas with carbonless SC treatment. In a second embodiment, the original panel is not coated, an image-transferring panel is fully coated on both surfaces with carbonless CB treatment, and the copy panel is fully coated with carbonless CF treatment. In a variation of this embodiment, the image-transferring panel is formed of a separate sheet of paper. In a third embodiment, the original panel is coated on both sides with a carbonless CB treatment from a first carbonless system, a first copy panel is coated with a carbonless CF treatment from the first carbonless system and with a carbonless CB treatment from a second carbo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.