HP CB480A HP Color LaserJet CM4730 MFP - User Guide - Page 275
Output is curled or wrinkled, Printer will not duplex or duplexes incorrectly, Cause, Solution
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Output is curled or wrinkled Output is curled or wrinkled Cause Solution Media does not meet the specifications for this MFP. Use only media that meets the HP media specifications for this MFP. Media is damaged or in poor condition. Printer is operating in an excessively humid environment. You are printing large, solid-filled areas. Remove media from the input tray and load media that is in good condition. Verify that the printing environment is within humidity specifications. Large, solid-filled areas can cause excessive curl. Try using a different pattern. Media used was not stored correctly and might have absorbed Remove media and replace it with media from a fresh, moisture. unopened package. Media has poorly cut edges. Remove media, flex it, rotate it 180 degrees or turn it over, and then reload it into the input tray. Do not fan media. If the problem persists, replace the media. The specific media type was not configured for the tray or selected in the software. Configure the software for the media (see the software documentation). Configure the tray for the media, see Load paper and print media. Printer will not duplex or duplexes incorrectly Printer will not duplex or duplexes incorrectly Cause You are trying to duplex on unsupported media. The printer driver is not set up for duplex printing. The first page is printing on the back of preprinted forms or letterhead. Solution Verify that the media is supported for duplex printing. Set up the printer driver to enable duplex printing. Load preprinted forms and letterhead in tray 1 with the letterhead or printed side up and the bottom of the page feeding into the MFP. For tray 2, 3, and 4, load these media printed side down with the top of the page toward the back of the MFP. ENWW Media-handling problems 259