A hardware issue is the most likely culprit. You can test that by trying to to a copy from the machine with the computer off. (most scanners have a "copier" function that lets you copy a paper directly to another paper) If you can copy a document or image there, then it's not the scanner, and a new cable might resolve the problem. If you can COPY from the copier, and you have a new cable, but the issue persists, then you would know it is a software issue rather than hardware. In that case, have a technician walk you through removal and reinstallation of the driver and scanning application, OR, try scanning from another photo application, such as MSOffice Photo Editor.
Hello,
I have seen your message stating that "Initialization failed - Unable to acquire TWAIN-compliant device" error is received when trying to connect USB-Parallel type to your Laptop.
Well, Printer Panasonic UF4100, recommends to use only " Printer/Scanner Interface as Bi-directional Parallel (IEEE1284) " means you need to use Parallel cable to connect Printer to the Computer/Notebook. You may receive some communication error messages if you are using a "PORT REPLICATOR CABLE"( USB TO PARALLEL connector). The error message that you have received is related to the communication error. Futher, if you use same USB- Parallel cable for long time the Printer Hardware functionality might go bad, since Printer memory gets confused and will not read or detect the Cable , since it is not a cable to use mentioned by Panasonic Manufacturer.
Let me tell you, general functionality of Printer like Printing would work even if you use USB-Parallel cable. But it is not a case with Scanner and Fax functionality.
Hence, I recommend you to use only Parallel cable to connect your Printer to the Laptops.
I hope that this will resolve the issue for you.
You can email me at [email protected] if you need further assistance.
Bye.
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