Hitachi Chemical Company, Ltd.

Chikara Ishikawa

Yoshitaka Minami

Youji Tanaka

Shinji Takano

Jinko Kimura

Takeshi Oohashi

A photosensitive film excellent in workability and making it possible, in a normal pressure laminating process, to laminate photosensitive films on the surface of substrate having a metallic surface with a reduced number of air voids generated and in a high product yield, said film comprising a support film (A), a photosensitive resin composition-containing photosensitive resin layer (B) formed on said support (A) and a protecting film (C) further stuck on said layer (B), wherein the number of fish eyes having a diameter of at least 80 &#x3bc;m included in the protecting film (C) does not exceed 5 fish eyes/m.

Photosensitive film

A photosensitive resin composition comprising (A) a carboxyl group-containing binder polymer which contains styrene or a styrene derivative as a copolymerized constituent, (B) a photo-polymerization initiator, and (C) a photo-polymerizable compound which has in its molecule at least one polymerizable ethylenically unsaturated bond and comprises a compound represented by the general formula (I)wherein Ris a hydrogen atom or a methyl group, A is an alkylenoxy group, Zis a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, an amino group, an alkylamino group, a dialkylamino group, a nitro group, a cyano group, a mercapto group, an alkylmercapto group, an allyl group, a hydroxyalkyl group, a carboxyalkyl group, an acyl group, an alkoxy group or a group containing an heterocyclic group, m is an integer of 4 to 20, and n is an integer of 0 to 5.

Photosensitive resin composition, photosensitive element using the same, process for producing resist pattern, and process for producing printed wiring board

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Takahagi, Japan

Chikara Ishikawa