EPSON Expression 1640XL8/00 EPSON Expression 1640XL - 1Scanner PartsScanner SpecificationsScannerGeneralScanner type Flatbed, colorMaximum 12.2 × 17.2 inches (310 × 437 mm)document size A3 or Letter (The reading area can bespecified from your software)Photoelectricdevice Color MatrixCCD line sensorEffective pixels 19520 × 27520 pixels at 1600 dpi,100% scalingMaximum hardwareresolution* 1600 dpi (main scan)3200 dpi with Micro Step Drive(sub scan)*The maximum hardware resolution of 1600 × 3200 dpi is achievedusing EPSON’s Micro Step Drive technologyOutput resolution 50 dpi - 12800 dpi50 to 6400 in 1 dpi incrementsZoom 50 to 200% in 1% incrementsMaximum interpolatedresolution 12800 × 12800 dpiLine art 1 bit per pixelSpeed (1600 dpi, Color: 13.2 msec/line (approx.)draft mode) Grayscale: 4.5 msec/line (approx.)Line Art: 4.5 msec/line (approx.)Color separation RGB color filters on CCDReading sequence Monochrome: One-pass scanningColor byte sequence: One-passscanning (R, G, B)Color line sequence: One-passscanning (R, G, B)Command level ESC/I-B8Optical density 3.6 DmaxColor depth 42-bit internal/42-bit externalGrayscale depth 14-bit internal/14-bit externalPixel depth 14 bits per pixel (14 bits per pixelinput, 1 to 14 bits per pixel output)Brightness 7 levelsLine art settings Fixed thresholdTET (Text Enhancement Technology,enable/disable selectable)Area separation AAS (Auto Area Segmentation,enable/disable selectable)Digital halftoning 3 halftoning modes (A, B, and C)4 dither patterns (A, B, C, and D) forbi-level and quad-level data(2 downloadable dither patterns)Gamma correction 2 types for CRT display3 types for printer1 type user-definedColor correction 1 type for CRT display3 types for printer (available in colorbyte sequence mode and color linesequence mode)1 type user-defineddocument coverdocument tabletransportation lockcarriage(at homeposition)controlpanel] Start buttonterminator switchSCSI interfacesSCSI IDdialoption connector(ADF/TPU)AC inletUSBinterfaceoptional interface slottransportation lock