The OP4w and ML4w were ultra-compact printers for Windows that printed four pages per minute. Adopting a print process that enabled toner recycling, the printers used a compact photosensitive drum to fit into 191 x 310 millimeter (w x d) footprint that was smaller than an A4 sheet. They were also designed for comfortable desktop use.
| Model name | Microline 4w | |
|---|---|---|
| Print process | Electrophotography process using an LED array | |
| Print speed | 4 ppm | |
| Print media | A4, A5, A6, B5, custom, letter, legal, envelopes, executive, postcards, reply postcards | |
| Resolution | 300 x 300 dpi / 300 x 1200 dpi (600 dpi equivalent) | |
| Interface | IEEE 1284-1994 parallel interface, Macintosh interface (RS422A) | |
| Input power supply | 100 VAC ± 10% (50/60 Hz ± 1%) | |
| Power consumption | In operation | Rated 450 W, average printing power ~100 W |
| Idling | Average idling power ~30 W, power-save mode ~5 W | |
| Operating noise level | Printing: 48 dB (A) or less, idling: 38 dB (A) or less | |
| Weight | 〜3.8kg | |
| External dimensions (w x d x h) | 191×310×150 mm | |
