Casio Computer Co., Ltd.

Casio Electronics Manufacturing Co., Ltd.

Yuichiro Iegaki

Hideki Ikeda

Yuta Kan

Kenji Kihira

Chihiro Toyama

Tetsuya Abe

Fumio Shimazu

Hideki Ando

Hiroaki Ootsubo

Hideki Hasegawa

Masahiro Maeda

A biological information detection device having a sensor, arranged in a main body, to detect biological information from a portion of a tragus facing an ear canal and a first contact portion and a second contact portion configured to bring the sensor into contact with the portion of the tragus, wherein the second contact portion includes a first end connected to the main body, a second end connected to the main body and an anthelix-side contact portion, disposed away from the main body and continuous with the first end and the second end, configured to contact an anthelix and/or a cymba canchae, wherein, in a state where the first contact portion contacts the cavum conchae, one of the first end and the second end that is closer to the ear canal is disposed closer to the first contact portion than the other of the first end and the second end.

Biological information detection device with sensor and contact portions to bring sensor into contact with portion of ear

An electrophotographic toner which is excellent in grindability, fixing property and durability by being obtained via a step of melt-kneading a mixture containing an amorphous bioplastic having a weight-average molecular weight (Mw) of 55000 to 120000, a terpene phenol resin, and a styrene acrylic resin having a weight-average molecular weight (Mw) of 85500 to 118000 so as to obtain a kneaded mixture, and a step of grinding the kneaded mixture after hardening.

Electrophotographic toner using bioplastic and production method thereof

An electrophotographic toner having good grindability, and excellent fixability and durability, and a method of producing the same are provided. The electrophotographic toner includes an amorphous bioplastic having a weight average molecular weight (Mw) of 30,000 to 100,000, and at least one of a phenol resin and a terpene phenol resin as a grinding aid.

Electrophotographic toner using bioplastic and method of producing the same

In a new printer, a toner cartridge is mounted in the state where there is no toner in a reserve tank, and toner of the amount of filling toner D therein is supplied with the amount of full accommodation toner E for filling up the reserve tank by a toner supply mechanism. The toner of the amount of remaining surplus toner F remains in the toner cartridge. The amount of toner consumption G is measured by a dot counter during a printing execution. In the case where a toner density sensor detects a toner decreasing, the toner is supplied to a developing unit from the reserve tank. When it becomes G&#x3e;F, it display-informs a user of 'toner cartridge exchange is allowed'. Hereby, it enables to exchange the toner cartridge without stopping operation of the main body of the image forming apparatus using a two-component developer.

Image forming apparatus and toner refilling method therefor

Growing community of inventors

Kodaira, Japan

Yuichiro Iegaki