An image forming device is provided with a signal output unit which outputs an interrupt signal when storage of a print job input from the outside in a memory is completed, a processor which switches the operation mode to a normal mode when an operation mode of the own device is a power saving mode when an interrupt signal output from the signal output unit is input, executes each of the print jobs stored in the memory, and switches the operation mode to the power saving mode after the completion of printing, and a signal delay unit which can delay the input of the interrupt signal output from the signal output unit to the processor when the operation mode is the power saving mode.

A portable terminal comprises an ID acquisition section, a position information acquisition section and a return instruction section. The ID acquisition section acquires ID information that specifies a print job sent from an information processing apparatus to an image forming apparatus. In a case in which the ID information is acquired and a beacon signal is received from a beacon transmitter, the position information acquisition section acquires, according to the received beacon information, position information relating to a position of the portable terminal relative to the image forming apparatus. If the position information meets a specific condition indicating the approach of the portable terminal to the image forming apparatus, the return instruction section instructs the image forming apparatus to return from a power-saving mode to a normal mode.

There is provided a technique of appropriately shifting an image forming apparatus to a power saving state in consideration of the use status of an external device such as a connected USB device. When a condition for shifting to a sleep state is satisfied, the CPU of the image forming apparatus determines whether or not a setting of a sleep shift at the time of use of the USB device is “permit”. If it is determined that the setting of the sleep shift at the time of use of the USB device is “do not permit”, the CPU determines whether or not the connected USB device is in use. If it is determined that the USB device is not in use, the CPU shifts the image forming apparatus to the sleep state.

Disclosed is an image forming system including: an image forming apparatus comprising a wireless communication unit; and a terminal device for transmitting a print job to the image forming apparatus, wherein the wireless communication unit executes a wave radio intensity setting process in which the wireless communication unit transmits a received signal intensity request at a predetermined radio wave intensity, receives information from the terminal device, which indicates a received signal intensity at a timing of receiving the received signal intensity request, and sets a radio wave intensity of a radio wave to be transmitted by the wireless communication unit to a set value which is lowered within a range in which the image forming apparatus is communicable with the terminal device in which the received signal intensity indicated in the information is lowest, and the image forming apparatus executes the print job received from the terminal device.

An image forming system that is capable of preventing obstruction of transmission of a packet to an information processing apparatus from a USB device supporting USBNW due to the shift to the sleep mode. The image forming system includes an information processing apparatus, an image forming apparatus with a sleep mode, and a USB device that is connected to the information processing apparatus through the image forming apparatus and is controlled by the information processing apparatus. The image forming apparatus includes a first determination unit that determines whether the USB device supports USBNW, a second determination unit that determines whether a packet received from the information processing apparatus is processed by a module supporting USBNW, and a control unit that prohibits the image forming apparatus from shifting to the sleep mode when the USB device supports USBNW and when the packet is processed by the module supporting USBNW.

A logic circuitry package for a replaceable print apparatus component includes an interface including a power terminal and at least one logic circuit. The at least one logic circuit is configured to respond to communications sent to a first address via the interface and respond to communications sent to a second address via the interface. The at least one logic circuit is configured to in response to a first command sent to the first address, draw a first current on the power terminal; and in response to a hibernate command sent to the first address, respond to communications sent to the second address and draw a second current on the power terminal less than the first current.

A sheet discharge device includes at least one sheet discharge tray, a sheet discharge position adjustment actuator, and a controller. The sheet discharge tray receives discharged sheets. The discharge position adjustment actuator adjusts discharge positions of the discharged sheets on the at least one sheet discharge tray. The controller compares a first rotation amount of first print data printed on a first sheet with a second rotation amount of second print data printed on a second sheet. In response to a determination that the first rotation amount is different than the second rotation amount, the controller controls the sheet discharge position adjustment actuator to (a) discharge the first sheet to a first discharge position and (b) discharge the second sheet to a second discharge position different than the first discharge position.

An image forming device is provided with a signal output unit which outputs an interrupt signal when storage of a print job input from the outside in a memory is completed, a processor which switches the operation mode to a normal mode when an operation mode of the own device is a power saving mode when an interrupt signal output from the signal output unit is input, executes each of the print jobs stored in the memory, and switches the operation mode to the power saving mode after the completion of printing, and a signal delay unit which can delay the input of the interrupt signal output from the signal output unit to the processor when the operation mode is the power saving mode.

A mobile device includes a driving circuit, a first accommodation section configured to accommodate a first battery which supplies electric power to the driving circuit and which is an all-solid-state battery having a solid electrolyte, a control circuit configured to control the driving circuit such that driving is performed in one of a plurality of modes including a first mode and a second mode in which power consumption is smaller than the first mode, and a determination circuit configured to determine whether electric power is supplied from an external power source to the first battery. When the determination circuit determines that the electric power is supplied from the external power source to the first battery, the control circuit performs switching from the second mode to the first mode.

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.