Abstract: An image processing portion of an image reading apparatus includes an extraction portion that extracts color information, a management portion that manages management color information that is an estimated value of the color information based on a control signal, a determination portion that determines whether or not the color information matches the management color information, and a writing control portion that causes the storage portion to store the pixel data when it is determined that the color information matches the management color information and that does not cause the storage portion to store the pixel data when it is determined that the color information does not match the management color information. When the color information does not match the management color information, the management portion adjusts the management color information to match the color information.

Abstract: An image processing portion of an image reading apparatus includes an extraction portion that extracts color information, a management portion that manages management color information that is an estimated value of the color information based on a control signal, a determination portion that determines whether or not the color information matches the management color information, and a writing control portion that causes the storage portion to store the pixel data when it is determined that the color information matches the management color information and that does not cause the storage portion to store the pixel data when it is determined that the color information does not match the management color information. When the color information does not match the management color information, the management portion adjusts the management color information to match the color information.

Abstract: An image reading system is configured by integrally assembling a flatbed scanner apparatus and a sheet-fed scanner apparatus using a separate component, a connection unit. A circuit substrate for a power source system and a communication system is disposed in the connection unit. The circuit substrate includes a power source input connector to which power is input, a power divider that divides power input from the power source input connector into plural types, and a power source output connector and a communication connector that output each power divided by the power divider to each scanner apparatus.

Abstract: An image reading system is configured by integrally assembling a flatbed scanner apparatus and a sheet-fed scanner apparatus using a separate component, a connection unit. A circuit substrate for a power source system and a communication system is disposed in the connection unit. The circuit substrate includes a power source input connector to which power is input, a power divider that divides power input from the power source input connector into plural types, and a power source output connector and a communication connector that output each power divided by the power divider to each scanner apparatus.

Abstract: DC power supplied from an AC adaptor to a docking station is supplied to a station power circuit and is also supplied to a printer power circuit. The docking station includes a transistor capable of switching on and off a path of supply of DC power from the AC adaptor to the printer power circuit. An operation state of a power switch of the main printer body can be detected in both a printer control device and a station control device. A one-pulse circuit causes a PC terminal of the printer power circuit to have a GND potential only for a predetermined period of time at the start of supply of DC power that is supplied from the AC adaptor to the docking station.