Brother Kogyo Kabushiki-Kaisha

Takato Mori

Hiroshi Ono

Kunihiro Amano

Jagatjyoti Ghimire

A wireless communication device includes: a main substrate including: a first connector having a detection terminal, an earth terminal and an output terminal; a current circuit configured to cause current to flow toward the detection terminal; a ground wired to the earth terminal; a power supply circuit configured to supply a voltage toward the output terminal; and a controller configured to stop supply of the voltage to the output terminal by the power supply circuit; and a wireless communication substrate including a second connector having a first terminal, a second terminal, and an input terminal, the first terminal and the second terminal being electrically connected, in which the controller is configured to detect that the current no longer flows via the detection terminal, the first terminal, the second terminal and the earth terminal.

Wireless communication device including main substrate configured to control image forming unit

A wireless communication device includes a main substrate, a wireless communication substrate having an antenna configured to perform wireless communication, a sub-substrate having a first substrate surface and a second substrate surface opposite to the first substrate surface, a main connector provided on the main substrate, a communication connector provided on the wireless communication substrate, a first connector provided on the sub-substrate and being electrically connected to the main connector such that the sub-substrate is parallel to the main substrate, and a second connector provided on the sub-substrate and being electrically connected to the communication connector such that the sub-substrate is parallel to the main substrate, in which a position of the first connector and a position of the second connector are shifted, seen from a direction orthogonal to the first substrate surface of the sub-substrate.

Wireless communication device

According to aspects of the present disclosures, a controller of an image forming apparatus is configured to determine, when printing is started, whether a particular condition is satisfied, the particular condition being satisfied when an elapsed time from a time when the polygon mirror starts rotating to a time when a rotation speed of the polygon mirror has reached a determination speed which is slower than a target speed is less than an upper limit time, when the particular condition is determined to be satisfied, feed the sheet from the sheet tray with the feed roller before the rotation speed reaches the target speed, and when the particular condition is determined not to be satisfied, feed the sheet from the sheet tray with the feed roller after the rotation speed has reached the target speed.

Image forming apparatus and method of controlling image forming apparatus

An optical scanning device includes a controller, and a scanning unit connected with the controller via a signal line. The scanning unit includes a semiconductor laser having light emitting elements, an optical system configured to convert light emitted by each light emitting element into a beam, a deflector configured to deflect the beam received through the optical system, and a shift register including a plurality of output terminals each configured to output a light emission signal for controlling light emission from a corresponding one of the light emitting elements, and an input terminal configured to receive a shift signal from the controller via the signal line. The shift register is configured to, each time receiving the shift signal via the input terminal, shift a specific output terminal to output the light emission signal from one output terminal to another in sequence among the plurality of output terminals.

Optical scanning device, laser diode driver and image forming apparatus having shift register to receive a shift signal

A main power supply supplies a supply target including a network connector with power for allowing the supply target to operate. The network connector operates by using power supplied from the main power supply. A network-event detector detects an electrical change in the telephone network as a network event. A backup power supply is provided separately from the main power supply and is charged with power supplied from the main power supply during operation of the main power supply. A normal-mode setter operates by using power supplied from the backup power supply in a stopped mode, and to set an operational mode to a normal mode in response to occurrence of a voltage reduction state in a backup voltage. A forcing discharger discharges charged power of the backup power supply in response to the network-event detector detecting the network event in the stopped mode, thereby generating the voltage reduction state.

Communication apparatus being selectively powered by a main power supply or a back-up power supply depending on the operating mode of the communication apparatus

A communication apparatus is provided that includes a modem configured to transition between a normal mode and a power-saving mode, a voltage variation generator configured to generate a voltage variation on a telephone line in response to a transition instruction, a communication controller configured to connect therethrough the modem with the telephone line, and to detect the voltage variation generated on the telephone line by the voltage variation generator, the communication controller being further configured to output a transition signal to cause the modem to transition from the power-saving mode to the normal mode, in response to detecting the voltage variation on the telephone line when the modem is in the power-saving mode.

Growing community of inventors

Aichi, Japan

Takato Mori