Abstract
Super-high speed continuous feed B/W laser printers have been used for printing a large number of documents, accounts or statements in public offices. Generally, these jobs must be done in a limited time, then they are required for very high printing speed, durability and reliability.
In addition to the performances described above, it is necessary to improve print qualities for monochrome printers in recent years. They have been adopted to direct mail and book markets, etc. The markets require halftone uniformity in photographs and line width stability1∼3).
In this report, an overview of Developing system for Super-high speed continuous feed B/W laser printers is described. Especially performances of developing system with multi developing rollers, and developer mixing, toner feed and toner concentration sensing systems are described.
