ZJS

The zjs file extension is associated with the Zenographics ZjStream SuperPrint Zj stream.

Page Description Language. The Zj-RCA controller for the Minolta 3001 color laser printer was the first of its kind. While other host-based printing systems with very simple engine interfaces have been built, the Zj-RCA controller was the first to solve the problem with a standard parallel interface, with high performance and while maintaining a low controller cost. Other host-based printers have at least one significant drawback. The Minolta 3001 Zj was the first truly practical host-based color printing system.

ZjStream printers are often erroneously referred to as win-printers or GDI-printers. However, Microsoft GDI only mandates the API between an application and the printer driver, not the protocol on the wire between the printer driver and the printer. In fact, ZjStream printers are raster printers which happen to use a very efficient wire protocol.

ZjStream is licensed by most major printer manufacturers for at least some of their product lines. ZjStream is just one of many wire protocols that are in use today, such as Postscript, PCL, Epson, etc.