A plurality of groups are arranged in a light emitting device. Each of the groups includes a plurality of light-emitting elements, a plurality of transistors arranged corresponding to the plurality of light-emitting elements and configured to supply current to the plurality of light-emitting elements, and a group control transistor configured to control current flowing through the plurality of transistors. The plurality of groups have a first group and a second group. The first group has a plurality of light-emitting elements. The second group has a plurality of light-emitting elements. A light-emitting element of the second group is arranged between one light-emitting element of the first group and the other light-emitting element of the first group.

An image reading apparatus includes: a movable body configured to illuminate a document with light; and an apparatus body configured to wirelessly transmit power to the movable body, wherein the movable body includes receiver coils, and a feed circuit in which the receiver coils uses receiving power to supply power to a load, the apparatus body includes transmitter coils placed along a track of the receiver coils, the transmitter coils and the receiver coils are placed such that power supply efficiency of any receiver coil with the transmitter coil placed along the track of the receiver coil fluctuates, and power supply efficiency related to one receiver coil increases at a position where power supply efficiency related to the other receiver coil drops, and the feed circuit supplies power sequentially using the receiving power of the receiver coil whose power supply efficiency is increased to highest among the receiver coils.

An image reading apparatus includes a reading device having an opening in an upper surface thereof, a main device disposed below the reading device, a first cable connected to the reading device and the main device and including a first portion, a retaining portion disposed in the main device, and a groove portion. The retaining portion is configured to retain the first portion of the first cable such that the first portion has a substantially U-shaped curve, which is curved downwardly, and such that a liquid passes through the opening of the reading device, runs on the first portion downwardly and drops down from a lower end of the substantially U-shaped curve in the first portion of the first cable. The groove portion is configured to receive the liquid dropping down from the lower end of the substantially U-shaped curve in the first portion of the first cable.

A image forming apparatus includes a power control unit, an operation mode control unit, and a first timer. The power control unit performs control so as to switch between a normal power state for supplying the operation power supply voltage to the image forming unit, a first power saving state for not supplying the operation power supply voltage to the image forming unit, and a second power saving state having less power consumption than the first power saving state. The operation mode control unit performs control so as to switch a normal mode corresponding to a normal power state, a first power saving mode corresponding to a first power saving state, and a second power saving mode corresponding to a second power saving state.

An image forming apparatus includes a printing section, an electrostatic touch panel, a power source circuit section, and a contact member. The printing section performs printing. The electrostatic touch panel receives a touch operation by a user. The power source circuit section receives supply of power from a commercial power source and supplies power to the printing section and the electrostatic touch panel. The contact member is connected to a ground of an image forming apparatus and is touched by a user operating the electrostatic touch panel.

Some examples of a document scanning system can include a scanner and a sheet output stacker. The stacker includes an upper surface configured to mate with the scanner configured to scan and transfer contents of a paper document. The stacker is configured to receive paper sheets from the scanner. The stacker includes multiple, upward extending interface housings positioned on the upper surface. The multiple interface housings are configured to be received in respective multiple receiving structures in the scanner, and are configured to mechanically and electrically couple the sheet output stacker and the scanner. The interface housings allow care-free electrical and mechanical pairing of a scanner to a stacker with no tools or adjustments. Simply positioning the scanner on the stacker such that the interface housings are aligned with the receiving structures results in the scanner being automatically guided into place and connected to the stacker through gravity.

An image forming apparatus includes: an operation panel having an operation surface for accepting operations from a user; a photovoltaic module for generating electric power upon reception of light; and a support member for supporting the photovoltaic module in such a way that the photovoltaic module is placed above the operation surface of the operation panel. The photovoltaic module is supported so as to be pivotable relative to the support member.

Disclosed is an image forming apparatus which includes: a frame with an image forming portion; an operation unit being arranged to be movable with respect to a top surface of the frame; a cable with an electric wire which connects the frame and the operation unit; and an outlet provided on the frame or the operation unit, wherein the cable includes: an elastic member provided along the electric wire from the frame to the operation unit, the elastic member having a width equal to or greater than a diameter of the electric wire; and a protruding portion with elasticity, provided on a side of the elastic member on which the electric wire is arranged such that the protruding portion protrudes from the side of the elastic member, the protruding portion having a height which is equal to or greater than the diameter of the wire.

A solid-state imaging device includes a pixel circuit including a plurality of photoelectric conversion elements and configured to output a signal level and a reset level, an analog correlated double sampling (CDS) circuit connected to the pixel circuit and configured to perform correlated double sampling in an analog region based on the signal level and the reset level and output a result of the correlated double sampling, an analog-digital (AD) conversion circuit connected to the analog CDS circuit and configured to convert two different analog signals output from the analog CDS circuit into two digital signals, a signal processing circuit connected to the AD conversion circuit and configured to obtain a difference between the two different digital signals output from the AD conversion circuit; and a reference voltage generating circuit to output a first reference voltage that defines a clamp level of the analog CDS circuit.

An image forming apparatus having a USB communication function includes a control interface unit to perform USB control communication, a data interface unit to perform USB data communication, and a control unit to perform an event in a low power mode according to a signal input through the control interface unit, and to perform an event in a normal mode according to a signal input through the control interface unit and the data interface unit. Therefore, the low power mode may be effectively implemented.