Fujitsu Corporation

Fujitsu Limited and Fujitsu Isotec Limited

Yasuhiro Ite

Shingo Yamaguchi

Satoshi Watanabe

Satoshi Kanbayashi

Hayato Shida

Akira Sakai

Hiroshi Kubo

Akira Ueda

Kohei Choraku

Yoshifumi Kajiwara

Takao Shinoda

Manabu Hongo

Tetsuyuki Kubota

Hiroyuki Takita

Masaru Sugie

Akihiro Komuro

Takashi Maekawa

Hideharu Matsushita

Chiaki Sekioka

Yoji Houki

Masayuki Kubota

Akihiro Otsuka

Mamoru Hokari

Yasushi Yui

Tomokazu Akuta

Takamasa Shinde

Kazuhisa Inagaki

Junji Akutsu

Kouhei Chouraku

A temperature calculation method for a substrate, the temperature calculation method includes: calculating, by a computer performing a circuit simulation based on a resistance equivalent to a component that joins two substrates included in a target model of an analysis, a value of a current that flows through the component or voltage values in respective end portions of the component; setting, based on model information for expressing the target model, the current value or the voltage values in a first surface and a second surface that are included in surfaces of an outer shape of the component and that are in contact with the respective substrates; and calculating a first current density distribution of the component by performing a first electrical analysis according to the setting.

Temperature calculation method, information processing device, and non-transitory recording medium storing temperature calculation program

An electronic device includes: a case including a wall portion including an opening, and a pair of longitudinal grooves, wherein each of the longitudinal grooves includes a first groove portion that is disposed with the opening between the first groove portions; a second groove portion that is contiguous to the first groove portion through an inclined groove wall; a lid that moves along the longitudinal grooves, and that is brought closer to the wall portion by the inclined groove wall under an action of moving the lid to the first groove portion; a resilient member that is provided at the lid, and that is compressed by the wall portion and the lid by the action of moving the lid closer to the wall portion; and a connection member that is connected to an electronic component inside the case, and that is exposed from the opening when the opening is opened.

Electronic device

An electronic device including: a protrusion portion that projects towards a bottom face of a groove from the opposite side face of a second hook portion, that is inserted into the groove, and that makes close contact with a sealing material; and a cut-away portion that is formed to a side wall portion positioned further to the casing inside out of a pair of side wall portions forming the groove, the cut-away portion being formed at a position corresponding to a first hook portion.

Electronic device and electronic device manufacturing method

A waterproofing case with a first case and a second case includes a non-annular groove that has a start point side and an end point side and is arranged in parallel by a barrier rib of a certain length, in one of annular bonding portions. The waterproofing case also includes a cutout portion provided at a middle portion of the barrier rib so as to allow a groove portion at the start point side and the end point side to communicate with each other and a plastic elastomer that is disposed within the non-annular groove by curing after being coated. Furthermore, the waterproofing case includes a protrusion that bisects an exposed portion of the plastic elastomer disposed within the non-annular groove toward opposite walls of the non-annular groove at bonding two cases, in other annular bonding portion of the first case and the second case.

Waterproofing case and method of manufacturing waterproofing case

A waterproof enclosure includes a first enclosure section and a second enclosure section. The first enclosure section has an opening along which a gasket is provided. The gasket has a body section and a lip section protruding from the body section. The second enclosure section is disposed opposite the first enclosure section. The second enclosure section has a planar surface and an inclined surface. The inclined surface of the second enclosure contacts the lip section of the gasket, and the body section of the gasket contacts the planar surface of the second enclosure section.

Waterproof enclosure and electronic apparatus

A pressure detector configured to detect a predetermined pressure includes a housing having a concave that includes a perforation hole that perforates the housing, a sheet configured to cover the concave and to rupture when placed in an environment of the predetermined pressure or higher, and a semipermeable membrane configured to cover one end of the perforation hole, and to allow air to pass through the semipermeable membrane, the semipermeable membrane being configured to prevent water from passing through the semipermeable membrane.

Pressure detector and electronic apparatus having the same

An ink ribbon cassette is pivotably mounted to a printer. Ink ribbon is accommodated in the ink ribbon cassette and is caused to travel by a ribbon feed roller driven by a drive shaft provided in the printer. Printing operation is carried out at the cassette end arm portion by a printing head, while the cassette end arm portion is reciprocatingly moved in the widthwise direction of the ink ribbon relative to the fixed printing head by an actuating mechanism so that a printing region of the ink ribbon is diffused and becomes wider than a printing width of the printing head. The actuating mechanism includes a small gear integral with the ribbon feed roller, a cam driven by the small gear, and a lever engaging with the cam.

Pivotable ink ribbon cassette and a printer

The present invention relates to an optical scanning unit used for exposing a photosensitive drum of an image forming apparatus to light, and an image forming apparatus using this optical scanning unit. This optical scanning unit comprises a light source; an optical scanning mechanism for scanning with light from the light source; a start detecting mechanism for detecting scan light of the optical scanning mechanism at an end portion of a scanning range of the scan light to detect beginning of light scanning; and a frame which has a higher rigidity than that of a frame of an image forming apparatus and to which the light source, the optical scanning mechanism and the start detecting mechanism are attached. The image forming apparatus comprises an endless photosensitive body; charging unit for charging the photosensitive body; an optical scanning unit for exposing the photosensitive body to light, including a light source, an optical scanning mechanism having the same structure as the aforementioned optical scanning unit; a developing unit for developing an electrostatic latent image formed on the photosensitive body by light exposure by the optical scanning unit; and a transfer unit for transferring a toner image on the photosensitive body onto a sheet. Alteration of the optical path of the optical scanning unit by external force applied is made smaller by making the frame of the optical scanning unit more rigid than that of the image forming apparatus.

Optical scanning unit and image forming apparatus using the same with

Growing community of inventors

Chofu, Japan

Yasuhiro Ite