How do I tell what scanning resolution to use for the best results?
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 PhotoDeluxe Image Type: 300 dpi**
- 36-bit Color (HiFi)***,
- 24-bit Color (Std),
- 16-bit Gray (HiFi)***,
- 8-bit Gray (Std)
- Magazine PhotoDeluxe 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 PhotoDeluxe Image Type: Line Art 300 to 3200 dpi
- * 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)