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| GENERAL |
| Model | WorkForce 840 | Officejet Pro 8500A Plus e-All-in-One (CM756A) |
| Type | All-in-one (printer/scanner/copier/fax) | All-in-one (printer/scanner/copier/fax) |
| For Use | Home | Small Office |
| Width | | 19.7 inch (502 mm) |
| Height | | 12.1 inch (308 mm) |
| Depth | | 16.8 inch (428 mm) |
| Weight | | 26.5 lbs (12.65 kg) |
| PRINTER |
| Printer Type | Piezoelectric Ink-jet | Thermal Ink-jet |
| Output Type | Color Printer | Color Printer |
| Format | A4 | A4 |
| Print Speed | 15 ppm (black A4), 9.30 ppm (color A4) | 35 ppm (black A4), 34 ppm (color A4) |
| Output Feed Capacity | | 150 pages (standart) |
| Print Resolution | 5760x1440 dpi | 1200x1200 dpi |
| Input Feed Capacity | 500 pages (standart) | 250 pages (standart), 500 pages (maximum) |
| Monthly Duty Cycle | | 15000 pages |
| First Page Out | | 14 s (black), 15 s (color) |
| Media Types | Plain Paper, Cards, Transparencies, Stickers, Photo Paper, Glossy Photo Paper, Envelopes, Matte Photo Paper. | Plain Paper, Cards, Transparencies, Stickers, Photo Paper, Glossy Photo Paper, Envelopes, Matte Photo Paper. |
| Paper Weight Support | 60-215 g/m2 | 60-250 g/m2 |
| Ink Cartridges Count | 4 | 4 |
| Colors Count | 4-ink | 4-ink |
| Printing Photos | Yes | Yes |
| Borderless Printing | Yes | Yes |
| Min Ink Droplet Volume | 2 picolitres | |
| Pigment Ink | Yes | Yes |
| Duplex Auto Printing | Yes | Yes |
| Direct Print (PictBridge) | Yes | Yes |
| Cartridge Capacity (Black) | 385 pages | 1000 pages |
| Cartridge Capacity (Color) | 470 pages | 900 pages |
| LCD Screen |
| LCD | Yes | Yes |
| LCD Type | Color | Color |
| LCD Diagonal Size | 3.5 inch | 4.3 inch |
| SCANNER/COPIER |
| Scanner Type | Flatbed | Flatbed/Sheetfed |
| Scanner Format | A4 | A4 |
| Scanner Size | 216x297 mm | 216x356 mm |
| Scan Element | CIS | CIS |
| Pixel Depth | 48 bit | 24 bit |
| Shades Of Gray | | 256 |
| Optical Resolution | 1200x2400 dpi | 4800x4800 dpi |
| Enhanced Resolution | 9600x9600 dpi | |
| Zoom Range | 25-400 % | 25-400 % |
| Zoom Step | 1 x | |
| Copier Resolution (Black) | 1200x1200 dpi | 1200x600 dpi |
| Copier Resolution (Color) | 1200x1200 dpi | 1200x600 dpi |
| Copying Speed | 15 ppm (Black A4), 7 ppm (Color A4) | 35 ppm (Black A4), 34 ppm (Color A4) |
| Maximum Number Of Copies | 99 | 99 |
| FAX |
| Fax Memory | 180 pages | 100 pages |
| Fax Speed | 33.6 kbit/s | |
| Color Fax | Yes | Yes |
| FEATURES |
| Interfaces | Ethernet (RJ-45), Wi-Fi, USB 2.0 | Ethernet (RJ-45), Wi-Fi, USB 2.0 |
| Memory | | 128 Mb, maximum: 128 Mb |
| OS Support | Windows, Mac OS | Windows, Linux, Mac OS |
| Minimum System Requirements | | Intel Pentium II |
| Power Consumption Operational | 16 W | 28 W |
| Power Consumption Standby | 2.9 W | 6.3 W |
| Noise Level | 38 dB | 66.2 dB |
| Card Reader | Yes | Yes |
| Supported Flash Cards | Compact Flash, Memory Stick, Memory Stick Duo, Memory Stick Pro, Memory Stick Pro Duo, MMC, SD, xD-Picture | Memory Stick, Memory Stick Duo, Memory Stick Pro, MMC, SD |
| Web-Interface | Yes | |
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| Compare rating |
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