The OL830-Plus and OL850 are desktop page printers, which use a stationary LED head and dry electrophotography as their exposure and development methods. The printers have a resolution of 300 x 300 dots per inch and a continuous print speed of 8 letter-sized sheets per minute. A two megabyte page memory is standard on the OL830-Plus and OL850 Printers. This can be expanded to a total of four megabytes of printer memory. The OL830-Plus and OL850 feature Oki Smoothing Technology (OST). The OST LED head provides edge smoothing to reduce the jagged stair step effects of bit mapped images for improved print quality. The OST capability is selected through the Smoothing option of the printer menu. The default setting is Smoothing On. The OL830-Plus provides PostScript capability, along with HP LJII and Diablo 630 ECS emulations. Seventeen Adobe PostScript fonts are standard on the OL830-Plus. In HP LaserJet II emulation, 26 bit-mapped fonts are available. The Diablo emulation includes 18 bit-mapped fonts. A Centronics Parallel Interface is standard on the OL830-Plus. The OL850 provides PostScript capability, along with HP LJII and Diablo 630 ECS emulations. Sixty-five Adobe PostScript fonts (35 resident and 30 down-loadable) are standard on the OL850. In HP LaserJet II emulation, 26 bit-mapped fonts are available. The Diablo emulation includes 18 bit-mapped fonts. A Centronics parallel interface and an AppleTalk/ Serial Interface are standard on the OL850. Each printer contains a font card slot. A variety of optional font cards are available. The OL830-Plus and the OL850 also accept downloadable fonts. Two consumable kits are used in the printers. The toner cartridge kit contains a toner cartridge, a fuser cleaner pad, and an LED lens cleaner. The other consumable package, the image drum cartridge kit, includes an image drum cartridge and an ozone filter. A letter-size paper tray is included with each printer. Legal, envelope, executive, and A4 trays are also available. Paper feeding can be done automatically or manually. A second paper feed unit is also available. The printers will print on a variety of paper types, labels, envelopes, and transparencies.