The middle-of-the-road Oki B420dn monochrome LED printer (which uses a page-wide array of LEDs, instead of a moving laser beam, to produce results similar to those of a monochrome laser printer) is neither fast nor flashy. As long as speed isn't a top priority, however, this machine is a reasonable choice for a small workgroup that prints both text and graphics.
Oki Printing Solutions B420DN

Pricing
$364.00 - $441.99 From 9 Vendors Get Best Prices »
- Spec Navigator
- Core Components
- Media Handling
- Network
- Connectivity
- Platform Support
- Dimensions
- General Features
- Green
- Included Hardware
- Included Software
- Resolutions
- Scanning
- Faxing
Media Handling
| Manual Feed Slot | Yes |
| Maximum Number of Input Trays | 3 |
| Maximum paper size, height | 14.0 inches |
| Maximum Sheets With All Paper Trays | 1110 |
| Output Tray Capacity | 150 |
| Standard Number of Input Trays | 2 |
| Maximum paper size, width | 8.5 inches |
| Standard input sheet capacity | 580 |
| Duplex printing | Yes |

- Lab Tested
- How We Test Printers »
Pros
Inexpensive; 24/7 toll-free tech support
High maximum paper capacity
Cons
Slow; awkward multipurpose tray
Skimpy starter-size toner cartridge
Bottom Line
The tradeoffs on this low-cost unit include slow print speeds and some design drawbacks.
Oki Printing Solutions B420dn Monochrome Laser Printer
B420DN Review, by Susan Silvius, PC World June 22, 2009
The $429 (as of May 25, 2009) jet-black unit has some nice features for the price. Together, the multipurpose tray and the main paper tray hold 580 sheets. You can purchase an additional 530-sheet tray for around $185. The control panel consists of a two-line, monochrome LCD and four circular, color-coded buttons with word labels. (An unlabeled button to the left of the LCD appears to be part of the controls but is in fact the cover release button.) I didn't have any difficulty figuring out how to use the control panel, but I appreciated the user guide's clear, comprehensive explanations. I also liked the 24/7 tech support that Oki offers.
The design of the multipurpose tray includes several fold-out parts of questionable durability. It also won't close if the paper-width guide is set to a width of less than 8.5 inches.
The B420dn's print speed dipped below the average for all monochrome lasers we've tested: 26.9 pages per minute for text (not far from Oki's claim of 30 ppm), and 6.5 ppm for graphics. Some photos appeared grainy and lacked contrast, while others showed a fine degree of smoothness and detail. Text, not surprisingly, looked black and crisp.
Two sizes of high-yield replacement cartridges are available for the B420dn: a 7000-page cartridge for $117 (1.7 cents per page) and a 10,000-pages cartridge for $160 (1.6 cents per page). The unit ships with a paltry 1500-page starter cartridge, so be prepared to shell out for replacement toner sooner than you might normally expect.
The Oki B420dn delivers what it promises, and is economical to run over the long term. Compared to other printers we've tested, however--such as the HP LaserJet P2055x and the Lexmark E460dn--it's a bit slow.
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- Rating Breakdown
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73
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79
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79
- See Complete Lab Results »
Performance Comparison with Similar Printers
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82
Performance
| 300dpi Line Art Image (secs) | 12.83 |
| 4 by 6 Color Photo (secs) | 14.19 |
| 4 by 6 Grayscale Photo (secs) | 12.17 |
| Color Output Quality | Good |
| Color Photo Quality | n/a |
| Copy Output Quality | n/a |
| Copy Quality | n/a |
| Grayscale Glossy Output Quality | n/a |
| Grayscale Output Quality | Good |
| Line Art Output Quality | Very Good |
| One-Page Webpage (secs) | 10.47 |
| Overall Scan Quality | n/a |
| Ten-Page Word Document | 29 |
| Ten-Page Word Document (secs) | 29 |
| Tested Color Speed (ppm) | 6.5 |
| Tested Glossy Photo Speed (ppm) | 4.7 |
| Tested Grayscale Speed (ppm) | 4.9 |
| Tested Text Speed (ppm) | 26.9 |
| Text Output Quality | Superior |
| Three-Page Word Document | 17.47 |
| Three-Page Word Document (secs) | 17.47 |
| Two-Page Excel Document | 12.42 |
| Two-Page Excel Document (secs) | 12.42 |
Text Printing
| Text output quality | Superior |
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