| 摘要 |
<P>PROBLEM TO BE SOLVED: To overcome the problems that also a time for measuring the whole patch chart becomes long because it is necessary to take a long time for measurement in order to stably converge random noise to nearly zero when measuring a patch by a sensor, and that a total measurement time for measuring the whole patch chart becomes long as a result of that a measurement time per patch is matched with a time that enables the darkest patch to be stably measured in the case of measuring scanning the patch chart by a sensor. <P>SOLUTION: A measurement speed is controlled for every patch so that the measurement speed for a patch low in optical density and the measurement speed for a patch high in optical density become fast and slow, respectively. Control information for a sensor is formed, and control of the sensor is performed using the control information at measuring with the sensor which measures while keeping the measurement speed constant. The patch chart can be measured in a short time while the SN of a dark patch high in optical density is improved. <P>COPYRIGHT: (C)2011,JPO&INPIT |
