Epson Expression 1680 Professional

Resolution refers to how many dots per inch (dpi) or dots per centimeter (dpcm) your image contains. The best resolution for a scanned image depends on the type of image you're scanning and your final output device. As a rule of thumb for most images except line art, use a scanning resolution that is approximately one third of your output resolution. For example, use a scanning resolution up to 100 dpi with a 300 dpi laser printer, and up to 200 dpi with a 600 dpi laser printer. For 1440 dpi ink jet printers, such as the EPSON Stylus (r) Color series, use a scanning resolution of up to 300 dpi. Try a scanning resolution of 240 dpi for 720 dpi printing. Here are some recommended settings for different types of scans.
- Image type Recommended Recommended Scanning resolution
- application TWAIN Pro* settings for printing**
- Photograph Photoshop LE Image Type: 300 dpi**
- 48-bit Color (HiFi)***,
- 24-bit Color (Std),
- 16-bit Gray (HiFi)***,
- 8-bit Gray (Std)
- Magazine Photoshop LE Image Type:
- 24-bit Color De-screening 300 dpi
- Newspaper TextBridge Pro Image Type:
- (text only) or PageManager OCR**** 300 or
- 400 dpi*****
- Text for OCR TextBridge Pro Image Type:
- or PageManager OCR**** 300 or
- 400 dpi*****
- Text with TextBridge Pro Image Type:
- images or PageManager Line art 300 or
- B/W option: 400 dpi*****
- Auto Area Segmentation
- Line art Photoshop LE Image Type: Line Art 300 to 3200 dpi
- Negative Photoshop LE Document Source: 300 to 3200 dpi
- transparency TPU for Neg. Film
- (35 mm film)
- Positive Photoshop LE Document Source: 300 to 3200 dpi
- transparency TPU for Pos. Film
- (35 mm film)
- * Recommendations for EPSON TWAIN Pro also apply to EPSON TWAIN Pro Network.
- ** If your output is for on-screen viewing (for example, on a web page), select a resolution of 72 dpi.
- *** This Image Type is available only in certain applications, such as Photoshop.
- **** Automatically selects Text Enhancement Technology (TET) as your B/W option.
- ***** If you are enlarging your image, you must manually change the resolution (dpi).