Chapter 2. Parameter Switching - Hitachi HT-4139-28 Developer's Manual

Chapter 2. Parameter Switching

It is necessary to save a parameter file by the TWAIN driver user interface for parameter
switching.
There are 3 ways to switch parameter files.
(1) Use a mode parameter specification tool (without UI)
(2) Rewrite parameter specification file
(3) Use a custom triplet
Process of (1) and (2) is the same, switch parameters by writing in the parameter specification
file.
Switching by the parameter specification file is inevitably applied when you use this TWAIN
driver.
Refer to 2.5.1 for the way of (3).
Notes for using parameter files
- Changes of Capabilities (size, etc.) by the application will be invalid.
- Not scanning automatically by parameter setting.
- Setting of continuous scanning is specified by CAP_AUTOFEED.
- When other scanners are used or the scanner option is changed, the parameter file cannot
be used.
Notes when HT-4139 Image scanner and HT-4134 Image scanner are
- Process of (1)and(2) becomes common setting of HT-4139 and HT-4134.
When the scanner used is switched, it is necessary to set it again.
2. Parameter Switching
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