What is CIS and CCD scanners?

CIS (Contact Image Sensor) and CCD (Charge-Coupled Device) are two types of imaging sensors used in scanners. CIS scanners utilize a linear array of sensors that are in direct contact with the document, leading to a compact design and lower power consumption, making them ideal for portable devices. In contrast, CCD scanners use a more complex system of lenses and mirrors to capture images, resulting in higher quality and greater depth of field, but typically at a higher cost and larger size. Both technologies have their specific applications, with CIS often found in low-cost, consumer-grade scanners and CCD in professional and high-end equipment.