HP LaserJet Pro M1212nf HP LaserJet M1130/M1210 MFP User Guide - Page 219
Solve image-quality problems, Problem, Cause, Solution, Paper, Quality, Paper Type, M1130 Series
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Problem Cause Solution Marks repeatedly appear at even intervals on the page. The product is not set to print on the type of paper on which you want to print. In the printer driver, select the Paper/ Quality tab and set Paper Type to match the type of paper on which you are printing. Print speed might be slower if you are using heavy paper. Internal parts might have toner on them. The problem typically corrects itself after a few more pages. The paper path might need cleaning. Clean the paper path. The print cartridge might be damaged. If a repetitive mark occurs at the same spot on the page, install a new HP print cartridge. The printed page contains misformed characters. The paper might not meet HP specifications. Use a different paper, such as high-quality paper that is intended for laser printers. If characters are incorrectly formed so that they produce a wavy effect, the laser scanner might need service. Verify that the problem also occurs on the configuration page. If so, contact HP. See www.hp.com/support/ljm1130series or www.hp.com/support/ljm1210series or the support flyer that came in the product box. The printed page is curled or wavy. The product is not set to print on the type of paper on which you want to print. In the printer driver, select the Paper/ Quality tab and set Paper Type to match the type of paper on which you are printing. Print speed might be slower if you are using heavy paper. If the problem persists, select a paper type that uses a lower fuser temperature, such as transparencies or light media. The paper might have been in the input tray Turn over the stack of paper in the tray. too long. Also, try rotating the paper 180° in the input tray. The paper might not meet HP specifications. Use a different paper, such as high-quality paper that is intended for laser printers. Both high temperature and humidity can cause paper curl. Check the product environment. The fuser temperature might be curling the paper. M1130 Series select a paper type that uses a lower fuser temperature, such as transparencies or light media. M1210 SeriesAt the product control panel, turn on the Less paper curl setting in the Service menu. ENWW Solve image-quality problems 205