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| Specification | SharpMX-C428P | SharpBP-51C31 |
|---|---|---|
| Automatic duplex output | YesSource | YesSource |
| Color capability | ColorSource | ColorSource |
| Declared print speed | 42 ipm or mppmSource | 31 ipm or mppmSource |
| Default sleep delay | 15 minSource | 1 minSource |
| ENERGY STAR partner | Sharp Electronics CorporationSource | Sharp Electronics CorporationSource |
| Imaging typical annual electricity consumption | 27.04 kWh/yearSource | 16.64 kWh/yearSource |
| Marking technology | Electro-photographic (EP)Source | Electro-photographic (EP)Source |
| Page format class | StandardSource | StandardSource |
| Product type | PrintersSource | Multifunction Devices (MFD)Source |
| Typical electricity consumption | 0.52 kWh/weekSource | 0.32 kWh/weekSource |