Epson Perfection 1640SU Office Product Information Guide - Page 1

(3621 3HUIH.WLRQ 68 Scanner Parts document cover carriage (in the home position) Operate button indicator light Start button Front View SCSI ID rotary switch document table SCSI interface connector USB interface connector transportation lock* option connector Back View Auto Document Feeder (optional, included with EPSON Perfection 1640SU OFFICE) Transparency Unit (optional, included with EPSON Perfection 1640SU PHOTO) * Before connecting the scanner to a power source, release the transportation lock (turn it down to the unlock position). Scanner Specifications Basic Specifications Scanner type Flatbed, color Photoelectric device Color matrix CCD Effective pixels 13600 × 18720 pixels at 1600 dpi, 100% scaling Maximum document size US letter or A4 size (8.5 × 11.7 inches [216 × 297 mm]) Up to legal size if using the optional auto document feeder (the reading area can be specified from software) Optical resolution 1600 dpi Maximum hardware resolution* 1600 dpi (main scan) × 3200 dpi (sub scan) * The maximum hardware resolution of 1600 × 3200 dpi is achieved using EPSON's Micro Step Drive™ technology. Maximum interpolated resolution 12800 dpi Speed (1200 dpi, Color and grayscale: 8.7 msec/line draft mode) (approximate) Line art: 3.0 msec/line (approximate) Output resolution 50 to 12800 dpi (50 to 6400 dpi in 1 dpi increments, 12800 dpi and 9600 dpi, 12800 dpi and 9600 dpi performed with zoom function) Command level ESC/I-B8 Zoom 50% to 200% in 1% increments Pixel depth 14 bits per pixel Brightness 7 levels Line art settings Fixed threshold TET (Text Enhancement Technology, enable/disable selectable) Digital halftoning AAS (Auto Area Segmentation, enable/ disable selectable) 3 halftoning modes (A, B, and C) 4 dither patterns (A, B, C, and D) for bi-level and quad-level data 2 user-defined dither patterns Gamma correction 2 types for CRT display (A and B) 3 types for printer (A, B, and C) 1 type for user-defined  (3621 3HUIH.WLRQ 68