Seiko Epson Corporation

Yasushige Hori

Yoichi Yamada

Katsumi Okamoto

Takatomo Fukumoto

Yuichi Segawa

Satoru Miyamoto

Tsuyoshi Kowari

Junji Shirokoshi

Akihiko Koyama

A printing device includes a printing unit and a panel unit. The printing unit includes a printing mechanism that executes a printing operation, a main circuit board including a processor that controls an operation of a panel unit and an operation of the printing mechanism, and a relay board that relays a signal propagated between the main circuit board and the panel unit, the panel unit is rotatably attached to the printing unit so as to take a first attachment state and a second attachment state, the relay board includes a wireless communication device attachment portion to which a wireless communication device configured to receive a wireless signal from an outside by wireless communication is attached, and a shortest distance between the panel unit and the relay board is smaller than a shortest distance between the panel unit and the main circuit board.

Printing device

A developing device that can be mounted to and dismounted from a mounting and dismounting section provided in an image forming apparatus main unit, the developing device includes: a developing device main unit; a positioning member for positioning the developing device main unit with respect to the mounting and dismounting section by engaging the mounting and dismounting section when the developing device is mounted to the mounting and dismounting section, the positioning member being fixed on a one end side in a longitudinal direction of the developing device main unit; a coupling member that is to be coupled to the mounting and dismounting section when the developing device is mounted to the mounting and dismounting section, the coupling member being attached to the other end side in the longitudinal direction of the developing device main unit in such a manner that its relative position to the developing device main unit can be changed; and an element capable of communication in a noncontacting manner with the image forming apparatus main unit side when the developing device is mounted to the mounting and dismounting section, the element being provided at the one end side in the longitudinal direction of the developing device main unit.

Developing device, image forming apparatus, image forming system, cartridge, developing unit and photoconductor unit

An image forming apparatus for forming an image with an electrophotographic process, that includes: a power source; a first drive unit having a capacitative load and driving each part of the apparatus; a second drive unit having a capacitative load and driving each part of the apparatus; and a power supply control circuit that is provided on a power supply path between the power source and the second drive unit, that switches whether or not electric power is supplied to the second drive unit. The power supply control circuit includes: a field-effect transistor with its source connected to the power source side of the power supply path, and its drain connected to the second drive unit side of the power supply path; a first resistive element connected between the field-effect transistor's gate and its source; a second resistive element and a capacitative element that are connected in parallel with the first resistive element, and connected with each other in series between the gate and the source.

Image forming apparatus

Growing community of inventors

Matsumoto, Japan

Yasushige Hori