User’s Manual
4-16
Gray
Document Type: Choice: Normal, Photo, Document
Three options of document type are provided when you
choose Gray as the image type for your scanned document.
Choice: Normal, Photo, Document.
Document:
Choose Document if your original contains
pure text or a mixture of text and graphic since it is an
optimal setting for regular business document. When
using Document, only Threshold can be adjusted.
Photo:
Choose Photo if your original contains photo to
reproduce your photo in vivid grayscale image. When
using Photo, no Threshold and Contrast can be adjusted.
Normal:
When using
Normal
, Threshold, Brightness,
and Contrast can be adjusted.
Threshold:
The value ranges from 0 to 255. The default is
230. A low threshold value produces a lighter image, and can
be used to subdue backgrounds and subtle, unneeded
information. A high threshold value produces a darker image,
and can be used to help pick up faint images. Adjust the
threshold setting by dragging the
Threshold
sliding bar to the
left or right to achieve the desired threshold setting.
Summary of Contents for DF-1002S
Page 1: ...Bookedge Scanner User s Manual Regulatory model DF 1002S Avision Inc ...
Page 27: ...User s Manual 4 5 ...
Page 36: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD ...
Page 39: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 ...
Page 51: ...User s Manual 4 30 The Compression tab dialog box ...
Page 53: ...User s Manual 4 32 ...
Page 57: ...User s Manual 4 36 The Color Dropout dialog box ...
Page 117: ...User s Manual 8 7 Figure 8 6 ADF Roller ADF Pad ...