Please install USB Device Driver for using USB TWAIN Driver.

Install method
1. Start "Device Manager" in "Control Panel".
2. If model name connected via USB is displayed on "Other device", right click on model name and select "Update Driver Software...".
    (If multiple model names are displayed, select model name that has space between "UTAX_TA" and model name.)
3. Select "Browse my computer for driver software".
4. For each model, browse the following folders in CDROM and click "Next..." and continue installation.

Model name Scanner USB Device Driver
UTAX_TA CD 1128_DC 2128 \USBTWAIN\1028_2028_1128_2128
UTAX_TA CD 1028_DC 2028 \USBTWAIN\1028_2028_1128_2128
UTAX_TA CD 1340_DC 2340 \USBTWAIN\1340_2340_1440_2440
UTAX_TA CD 1440_DC 2440 \USBTWAIN\1340_2340_1440_2440
UTAX_TA CD 5130_DC 6130 \USBTWAIN\5130_6130_5235_6235
UTAX_TA CD 5230_DC 6230 \USBTWAIN\5130_6130_5235_6235
UTAX_TA CD 5135_DC 6135 \USBTWAIN\5130_6130_5235_6235
UTAX_TA CD 5235_DC 6235 \USBTWAIN\5130_6130_5235_6235
UTAX_TA CD 5140L_DC 6140L \USBTWAIN\5140_6140_5240_6240
UTAX_TA CD 5240L_DC 6240L \USBTWAIN\5140_6140_5240_6240