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The V4 driver architecture is strictly a Windows concept. If you are using macOS, you will need to download the specific CUPS or AirPrint drivers available on the official Canon support pages. Step-by-Step Guide: Downloading and Installing canon lbp6030 v4 driver link
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Click and ensure "Use Printer Offline" is unchecked in the Printer menu. Driver Signature Errors canon lbp6030 v4 driver link