Epson WorkForce ST-M3000 Monochrome MFP Supertank Printer - Manual (Page 331)

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Image data Color:
48 bits per pixel internal (16 bits per pixel per color internal)
24 bits per pixel external (8 bits per pixel per color external)
Grayscale:
16 bits per pixel internal
8 bits per pixel external
Black and white:
16 bits per pixel internal
1 bit per pixel external
Light source LED
Parent topic: Technical Specifications
Fax Specifications
Fax type Walk-up black-and-white and color fax capability (ITU-T Super
Group 3); black-and-white only for receiving faxes
Supported lines Standard analog telephone lines and PBX (Private Branch
Exchange) telephone systems
Speed Up to 33.6 kbps