3. OPERATION AND TIMINGCOPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)3-56o. Output maskingA color image is reproduced by color toners with Y toner absorbing the B component, with M tonerabsorbing the G component, and with C toner absorbing the R component.However, in practice, the toners do not have pure color absorption characteristics as shown in Figure 3-336. In general, Y toner tends to have good absorption characteristics, but M toner tends to have undesirableabsorption characteristics for the B component; and C toner likewise tends to have undesirable absorptioncharacteristics for the G and the B components (segments enclosed in Figure 3-336). In other words, M tonerif left as it is would tend to have color reproduction characteristics that include the Y component, and C tonerwould have color reproduction characteristics that include the M and the Y components.Figure 3-336For this reason, reproduction of red by mixing Y toner and M toner would produce a yellowish redbecause of the Y component of M toner. Real red could be reproduced by removing the Y component from Mtoner (masking) in advance. This block makes such correction by masking the excess component in eachtoner.500400 600 700100%B G RYCM
