Tdk Corporation

Konica Corporation

Takahiro Tsuchiya

Ryoji Sunami

Hiroshi Fuma

Hiroshi Akita

Isao Matsuoka

Kyoichi Mizuno

Kunihiro Kawachi

Kenji Taki

Atsushi Yakuwa

Akihiro Hashimoto

Morio Sugata

Provided are a watertight plate where a resin is prevented from leaking and a power supply device including the same. In a base plate (watertight plate) of the present invention, when demarcating a channel by allowing a channel sidewall to contact with a cover plate, a resin is applied onto a second step portion of the channel sidewall to improve watertightness of the channel. The second step portion is closer to the channel and lower than a first step portion, which is a step portion in contact with the cover plate. Therefore, the movement of the resin applied onto the second step portion is prohibited by an edge surface of the step portion higher than the second step portion. Moreover, a resin lump of the resin applied onto the second step portion is housed within a third step portion which is closer to the channel and lower than the second step portion.

Watertight plate and power supply device including the same

A switching power supply includes a switching circuit, a main transformer, a rectifier circuit, and an output smoothing circuit, which are mounted on a base plate. Voltage transformation of an inputted direct current voltage is performed through collaboration among the above. A pedestal portion is formed on the base plate, and a channel to cool down electronic parts such as a diode is formed inside the pedestal portion. Since the channel is thus formed inside the pedestal portion, the device will not be larger-sized even when the channel is formed. Moreover, at least any of a switching element and a diode is mounted on the pedestal portion, and a choke coil is mounted in a region other than a region where the pedestal portion is formed. Therefore, even with the pedestal portion, it is significantly suppressed for the device to be larger-sized.

Switching power supply

An electric component connecting structure including a resin case having a first surface and a second surface, at least one metal bus bar fixed on the first surface of the resin case and having at least one welding projection portion, and at least one electric component mounted on the second surface of the resin case and having at least one lead leg. The at least one lead leg is welded to the at least one welding projection portion of the at least one metal bus bar.

Electric component connecting structure

An image forming apparatus includes, a rotatable image carrier, a writing exposure device to write the image and form a latent image in the rotatable image carrier, a developing device to form a toner image, a registration roller to convey a transfer sheet to an image transfer area where the toner image is transferred from the image carrier onto the transfer sheet, and a fixing roller to heat and fix the toner image, wherein when the length of a transfer sheet is longer than the length of the transfer sheet path between the registration roller and the fixing roller, according to the size of the transfer sheet, the controller changes and controls the relative rotating speed of the registration roller to a rotating speed of the fixing roller, and one of a rotating speed of the rotatable image carrier and a writing speed of the image.

Image forming apparatus

According to the present invention, there is provided an electronic components mounting structure constituted by a plurality of electronic components having lead terminals respectively, and conductors having connection portions to be connected to the lead terminals of the electronic components, in which the lead terminals of the electronic components are aligned with the connection portions of the conductors and the lead terminals and the connection portions are welded with each other.

Electronic components mounting structure

A toner replenishing apparatus includes: a toner reservoir section for reserving a toner therein; and scraper for scraping out the toner in the toner reservoir section and for supplying the toner to a developing device. The scraper is composed of a plurality of scraping members each having a different capability of scrape-out from each other.

Growing community of inventors

Tokyo, Japan

Takahiro Tsuchiya