Patent ID: 8837014

Claim:
A controller configured to control an illuminator of a contact-image sensor (CIS) device having sensors and the illuminator, wherein the illuminator is capable of illumination with three colors, wherein the sensors are capable of capturing images, and wherein the controller is configured to: cause the illuminator to: illuminate media with an outer color of the three colors, the outer color illuminating the media for a first period less than a fraction of a scan period, the fraction being the scan period divided by a number of the three colors, the scan period being in which a scan line is scanned by the CIS device based on a relative movement between the media and the sensors used to scan the scan line; and illuminate the media with a middle color of the three colors, the middle color temporally proximate to illuminating the media with the outer color, the illumination effective to enable the sensors to capture images of the media.