Canon imagePRESS C1+ User Manual

Also see for imagePRESS C1: User guide Service manual INSTALLATION PROCEDURE

Contents

Canon imagePRESS C1+ User Manual Manual pdf 11 page image

11Problems Caused by Paper CurlIf paper jams or poor print quality occur when paper is fed from the stack bypass or paper deck, paper curlis often the cause. The paper stiffness, direction of curl, and amount of curl have a strong influence on howwell the paper is transported through the machine. If paper is curled, always adjust the curl amount to theappropriate level as described below.Relationship between Paper Grain and CurlPaper stiffness depends on the direction of the paper grain. Paper tends to curl in direction parallel to thegrain.When using LTR or smaller paper sizes we recommend using paper with a grain parallel to the long edge(A). For paper sizes larger than 11” x 17”, we recommend using paper with a grain parallel to the short edge(B).Correcting Paper CurlIn order to prevent problems resulted from paper curl, it is necessary to uncurl paper appropriately.The amount of curl that may cause problems depends on the paper type and thickness. Refer to the graphsbelow to correct the paper curl so that it is within the acceptable range, and then reload the paper.IMPORTANTFor small and thick paper such as postcards, the difference between the amount of inner and outer curlmust be adjusted to less than 5 mm in addition to the conditions given below.Amount of Curl: 1 mmAmount of Curl: 7 mmTransportDirectionA BLow tendencyto curlHigh tendency to curl Low tendency to curlHigh tendencyto curlLong Grain Short Grain