Patent ID: 6057946
Filing Date: 2000-05-02
Classification: H04N

Abstract:
An image processing apparatus comprising:input means for inputting multivalued image data capable of m-level representation;processing means for performing image processing on the multivalued image data inputted by said input means;conversion means for converting the multivalued image data image-processed by said processing means into multivalued image data capable of n-level representation, such that the number of tonality levels n is greater than the number of tonality levels m; andimage formation means for performing image formation based on the multivalued image data capable of n-level representation,wherein said conversion means converts the multivalued image data such that the difference between an image density D(x) of an image formed on the print medium at a tonality level x and an image density D(x+1) of an image formed on the print medium at a next tonality level x+1 satisfiesD(x+1)-D(x).ltoreq.A(D(x))(A.ltoreq.0.08, D(x)>0.08).