Visioneer OneTouch 9420 Driver

USB DriverThe Visioneer OneTouch 9420 is a flatbed scanner much like the BenQ flatbed scanner 5000U listed on this website. The Visioneer One Touch 9420 Driver has been listed below for downloading and comes in Windows Vista / XP / 2000 versions. Note that this scanner is a bit odd in its drivers.

Visioneer OneTouch 9420 Driver

There are two drivers for the Visioneer OneTouch 9420. Likewise, turn your scanner around and see the number under the scanner to download the correct driver as there are two versions of the exact same scanner. Note that this is the TWAIN and WIA Drivers. Likewise see also the Visioneer OneTouch 6600 Scanner Driver.

Difference between TWAIN and WIA Drivers

Likewise, TWAIN and WIA are two protocols used for capturing digital images from devices like scanners and cameras, each with its own characteristics:


  • Widely Used: TWAIN is the most commonly used protocol for physical document scanners.
  • Driver Availability: Virtually all scanners on the market come with a TWAIN driver.
  • Transfer Modes: TWAIN supports three transfer modes: native, memory, and file.
  • Custom User Interface: It allows device vendors to create a customized user interface for each driver, tailoring the scanning experience.

WIA (Windows Image Acquisition):

  • Microsoft Driver Model: WIA is a Microsoft driver model designed for capturing digital images from various devices.
  • Built-in Support: The WIA protocol is built into and supported by Windows OS, eliminating the need for additional driver installation.
  • Transfer Modes: WIA supports two transfer modes: memory and file.
  • Standardized Interface: It employs a simplified user interface for all devices, based on a scripting object model.


  • TWAIN vs. WIA: When a device supports both TWAIN and WIA, TWAIN is often preferred due to its widespread use and customizable interface.
  • WIA Advantages: WIA offers standardized hardware compatibility and a stable driver environment, making it particularly useful for integrating imaging capabilities into web scanning applications.

In summary, TWAIN provides more flexibility and customization options, while WIA offers standardized compatibility and ease of integration, making each protocol suitable for different user needs and applications. Likewise see also the Visioneer OneTouch 6200 Scanner Driver.

See also  Visioneer 4400 Scanner USB Driver


How do I install TWAIN drivers on my computer?

Here’s a simplified and easy-to-understand version of the guide for installing TWAIN drivers on your computer:

1. Download the Driver:

  • Visit the official website of your scanner or printer’s manufacturer.
  • Look for the latest driver that matches your device.
  • Download the driver file to your computer.

2. Install the Driver:

  • Double-click the downloaded file to run the installation wizard.
  • Accept the license agreement and follow the instructions on your screen.
  • After the installation is complete, restart your computer to ensure the driver is properly installed.

3. Update Driver via Device Manager (Optional):

  • Open Device Manager on your computer.
  • Expand categories like ‘Printing queues’ or ‘Other devices’.
  • Right-click the scanner driver and choose ‘Update driver’.
  • Select ‘Search automatically for the updated driver software’ to update the driver via the internet.

Additional Tips:

  • Choose the Right Driver: Make sure to download the TWAIN driver specific to your scanner brand (e.g., HP Scan TWAIN driver for HP scanners).
  • Use Trusted Sources: Always download drivers from official and trusted sources to avoid potential issues.
  • Seek Assistance: If you face problems, consider using automated software or reaching out to tech support for help.

By following these steps, you can install TWAIN drivers on your computer, ensuring your scanner or printer functions smoothly. See more on the Visioneer OneTouch 9420 driver below. Likewise see also the Visioneer OneTouch 9520 USB on here.


How do I update my scanner driver?

Here’s a simplified and easy-to-understand version of the guide for updating your scanner driver:

To Check for Updates via Device Manager:

  1. Likewise, press the Windows logo key and R on your keyboard to open the Run box.
  2. Type devmgmt.msc and press Enter.
  3. Double-click ‘Imaging devices’.
  4. Right-click your scanner and select ‘Update driver’.
  5. Choose ‘Search automatically for updated driver software’.
  6. Click ‘Update Driver’.

To Download and Install from Manufacturer’s Website:

  1. Likewise, visit the official website of your scanner’s manufacturer.
  2. Look for the latest drivers matching your scanner model.
  3. Download the latest driver.
  4. Follow the installation instructions provided on the manufacturer’s website.

Additional Tips:

  • Use Trusted Sources: Always download drivers from official and trusted sources to avoid issues.
  • Professional Assistance: If you face problems, consider using automated software or contacting tech support for help.
See also  HP laserjet 1100 driver

By following these steps, you can update your scanner driver and ensure it functions optimally. Likewise see also the Visioneer OneTouch 9320 Driver.


Difference between Part Number 85-0240-x00 and Part Number 85-0257-x00

Likewise, the Part Numbers 85-0240-x00 and 85-0257-x00 correspond to different drivers for the Visioneer OneTouch 9420 scanner. Here are the key differences between them as they are both Visioneer OneTouch 9420 driver:

Part Number 85-0240-x00:

  • Scan Modes: Likewise, supports scanning with Flatbed and Automatic Document Feeders (ADF).
  • Scan to PDF: Allows scanning to PDF format, both single and multipage.
  • OCR Capability: Includes Optical Character Recognition (OCR) capability.
  • Automatic Color Detection: Features an automatic color detection function.
  • File Size Optimization: Creates small document file sizes for efficient storage.
  • Automatic Deskewing: Includes an automatic document deskewing feature.
  • Integrated with OneTouch Software: Integrated with Visioneer’s OneTouch software, offering direct links with industry-leading OCR, PDF, and Office software, customizable destinations, multiple destination scanning, barcode reading, OneTouch SDK for custom presets, and support for Visioneer’s proprietary Parallel Scanning functionality.

Part Number 85-0257-x00:

  • Scan Settings: Provides access to all the capabilities of Visioneer TWAIN DriverPLUS’s flexible scan settings.
  • Image Processing: Utilizes Visioneer Acuity’s Image Processing features.
  • OCR Capability: Uses ABBYY’s award-winning OCR engine and supports Optical Character Recognition (OCR).
  • Automatic Color Detection: Features automatic color detection.
  • Document Deskewing: Automatically deskews documents.
  • Parallel Scanning: Supports Visioneer’s proprietary parallel scanning, allowing connection of up to 10 scanners to one PC and concurrent operation.
  • Customizable Destinations: Allows opening scans in customizable destinations and scanning to one or many destinations at once.
  • Barcode Reading: Enables barcode reading for job separation and file naming.



Likewise, please note that the availability of features may vary based on the specific model of your scanner and the version of the driver being used. For the most accurate and detailed information. Likewise, it’s advisable to refer to the official documentation provided by Visioneer or contact their customer support directly.

While both drivers support essential scanning functions, the specific capabilities and integration options differ, allowing users to choose the driver that best suits their scanning needs and preferences. Likewise see also the Visioneer OneTouch 9120 Drivers.


driver download

Part Number 85-0240-x00

Windows Vista 64bit

Windows Vista 32bit


driver download

Part Number 85-0257-x00

Windows Vista 32bit


Technical Support Tip: It is important to properly remove any previous driver versions before installing a new driver.



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