If your scanner lets you scan the first time, but after shut-down and restart scanning seems impossible because OSX can’t find the scanner, just plug-out the scanner’s USB-cable and plug it back in and everything should work again… When using the SANE drivers, you will probably not be able to use the ‘one click’-buttons that are on the scanner itself… TWAIN-supporting drivers (like SANE and the ones that come with OSX) will enable you to directly scan from within various applications like Photoshop, MS Word, GraphicConverter, OmniPage and OSX’s built-in Image Capture. – and exit the System Preferences to make this setting stick – then at “Allow applications downloaded from:” select “Anywhere” – click the padlock in the lower left corner and provide an Administrator name & password to unlock the padlock – then make sure the “General”-tab is selected – if you get an error-message telling you you can’t install this software (these drivers) since the are not from Apple-appoved developers, you need to : pkg-files when you click on them, you need unTAR-software like this : – if these files do not turn into regular. – for MacOSX 10.7 Lion, download and install these files (in this same order) and restart your Mac after doing so, then your scanner will also show up in the “Print & Scan” System Preferences : – for OSX 10.8 Mountain Lion, download and install these files (in this same order) and restart your Mac after doing so, then your scanner will also show up in the “Print & Scan” System Preferences :
In that case, you will need to install some generic (FREE) TWAIN-drivers : …some for some printers, like the Canon CanoScan LiDE 20 and LiDE 30, the TWAIN-drivers are not included in OSX. – then it will be listed in the previous (“Print & Scan”) System Preferences window, and if you select it (and you put a piece of paper or a photo in the scanner), a Scanning Preview window will show up, allowing you to scan your document to file or eMail or something else… – if your scanner is TWAIN-supporting, it will show up there, and you just need to select it and click on the “Add”-button
– that will bring up the “Add”-window, which enables you to add a new printer or scanner – then, just below in the list of printers on the left, click on the “+”-sign – connect your scanner directly to your Mac using a USB-cable In OSX 10.7 Lion and 10.8 Mountain Lion any TWAIN-supporting scanner can be used without any additional software : But now I’ve bought a new Mac which runs OSX 10.8 Mountain Lion, I can’t seem to install it, since Canon doesn’t update the drivers anymore. I have a Canon CanoScan LiDE 20 that used to work perfectly in MacOSX 10.6 Snow Leopard. UPDATE : Mattias Ellert has now updated the TWAIN SANE drivers, so there is a new version for OSX 10.9 Mavericks (and OSX 10.8 Mountain Lion), more on this can be found here UPDATE : a list of supported scanners for OSX 10.9 Mavericks can be found here
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