公开(公告)号：WO1990014231A2

公开(公告)日：1990-11-29

申请号：PCT/US1990002518

申请日：1990-05-07

Applicant: STORAGE TECHNOLOGY CORPORATION

Inventor： STORAGE TECHNOLOGY CORPORATION ,  NELSON, Thomas, Craig

IPC: B41F0

CPC classification number: B41J3/60 ,  G03G15/234

Abstract: The printer (100) switchable between simplex and duplex mode of operation on a page by page basis makes use of a single simplex print engine (103). Duplex printing is accomplished by the reinsertion of a simplex printed page into the input of the print engine (103) in a flipped mode so the other side of the printed page can be printed by the print engine (103). This printer (100) also includes apparatus that dynamically switches the operation of the printer from duplex to simplex mode of operation when the printing commands input from the associated processor indicates that the other side of a simplex printed page is a blank page. This enables the print engine (103) to eject the simplex printed page directly to the output paper bin (105) without having to cycle this simplex printed page back through the print engine (103) even though there are no characters to be printed thereon.