"Method and apparatus for automatic ""two-up"" copying with intermediate latent image copiers"
US4814822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/051
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A copier of a type where an undeveloped electrostatic intermediate latent image from a document sheet may be temporarily retained on an electrostatic latent image retention member before being developed and transferred to a copy sheet, with document handling apparatus for sequentially feeding document sheets for individual copying, preferably automatically reordered in signature page order, with a system for sequentially forming at least two closely circumferentially adjacent plural latent images from at least two sequentially copied documents, and for directly sequentially developing and transferring these plural images in one pass onto one side of a single copy sheet. Apparatus is also shown for inverting and representing the copy sheet for similarly receiving plural images on the other side thereof, and for repeating the above steps to form sets of signature copy sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.