Ricoh Company, Ltd.

Mitsui Chemicals, Inc.

Koei Chemical Company, Limited

Masahiro Taniuchi

Tomohiro Inoue

Toshiyuki Ohsawa

Toshiyuki Kabata

Hiroshi Kubo

Takuro Sekiya

Tatsuaki Nagano

Keiichi Yokoyama

Akira Hirose

Okitoshi Kimura

Hiroshi Kusumoto

Akio Hiwara

Masashi Kohchi

Koji Miura

Masahiro Toriida

Takayuki Kurohara

An image reading apparatus configured to be disposed in an image forming apparatus. An image reading unit is configured to read an image from a document. A light permeable member has a surface configured to face the image on the document, the surface having a roughness of at most 0.5 S. A coating is disposed on the surface of the light permeable member, the coating configured to prevent adherence of contaminants on the surface.

Image reading apparatus and recording apparatus including image reading apparatus

An ionic conductive polymer gel for secondary battery includes an electrolyte salt component which includes a sulfonated derivative with formula (A):

Ionic conductive polymer gel and lithium-ion battery using the same

The present invention relates to an ionically conductive polymeric gel electrolyte for batteries having high ionic conductivity and sufficiently high solid strength. The invention has an object to provide a solid battery which prevents internal short-circuiting even if no diaphragm is used and which has high reliability, by using the ionically conductive polymeric gel electrolyte. Disclosed is an ionically conductive polymeric gel electrolyte, containing at least a polymer matrix, a non-aqueous electrolytic solution and an electrolytic salt, wherein at least one kind of a halogen-substituted carbonic ester is contained as a solvent of the non-aqueous electrolytic solution. Also disclosed is a solid battery having the ionically conductive polymeric gel electrolyte as a constituent.

Ionically conductive polymeric gel electrolyte and solid battery

A secondary battery includes a positive electrode comprising a positive active material; an electrolyte layer including a gel polymer solid electrolyte; and a carbon-based negative electrode capable of occluding and releasing lithium, which contains a binder including a resin composition of a copolymer of (a) a vinyl pyridine compound of formula (1), ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, and R.sup.2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and (b) a hydroxyl-group-containing (meth)acrylate compound.

Second battery comprising a gel polymer solid electrolyte and a

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Yokohama, Japan

Masahiro Taniuchi