https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF451dw-sometimes-scanning-colorful-lines/m-p/555455#M26927 <P>Hello,&nbsp;</P> <P>Th issue looks like it is being caused by a hardware issue. It looks like there is a loose connection for the scanner element or it is starting to fail. To check your service options, you can contact support over the phone at 1-800-652-2666 or log into your My Canon account.</P> Mon, 30 Jun 2025 19:31:37 GMT Hector 2025-06-30T19:31:37Z https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF451dw-sometimes-scanning-colorful-lines/m-p/497871#M23554 <P>Our printer/scanner Canon Imageclass MF451dw, when scanning through the feeder, frequently acts up. The documents scan completely, but every second page there is often this rainbow of colors superimposed over everything. Less often, it scans perfectly. Help!</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2024-09-04 153608.png" style="width: 763px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/57319iA15AEC213DB47114/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2024-09-04 153608.png" alt="Screenshot 2024-09-04 153608.png" /></span></P> Wed, 04 Sep 2024 19:56:09 GMT https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF451dw-sometimes-scanning-colorful-lines/m-p/497871#M23554 kimphysio 2024-09-04T19:56:09Z https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF451dw-sometimes-scanning-colorful-lines/m-p/555455#M26927 <P>Hello,&nbsp;</P> <P>Th issue looks like it is being caused by a hardware issue. It looks like there is a loose connection for the scanner element or it is starting to fail. To check your service options, you can contact support over the phone at 1-800-652-2666 or log into your My Canon account.</P> Mon, 30 Jun 2025 19:31:37 GMT https://community.usa.canon.com/t5/Office-Printers/imageCLASS-MF451dw-sometimes-scanning-colorful-lines/m-p/555455#M26927 Hector 2025-06-30T19:31:37Z