Patent ID: 6958835

Claim:
An image inputting apparatus which reads a document optically and provides image information which corresponds to a document image, the image inputting apparatus comprising: a light source which irradiates light onto the document; a four-line CCD sensor which includes a first CCD line sensor which is structured by a three-line CCD sensor in which color filters are respectively disposed on surfaces of light receiving elements, and a second CCD line sensor which is structured by a one-line CCD sensor in which no color filter is disposed, the four-line CCD sensor receiving reflected light from the document and providing an image signal which corresponds to the reflected light; a driving section which supplies a signal including an image transfer clock to the four-line CCD sensor, and drives the four-line CCD sensor; adjusting section which adjusts an amplitude of at least one signal among signals outputted from the first CCD line sensor when a color document is read and an amplitude of a signal which is outputted from the second CCD line sensor when a monochrome document is read, to be substantially equal to one another; and a selecting section which selectively provides output of the first CCD line sensor in a case in which a color document is read, and selectively provides output of the second CCD line sensor in a case in which a monochrome document is read.