Patent ID: 6685305
Filing Date: 2004-02-03
Classification: B41J

Abstract:
An ink jet recording head, which has plural pressure chambers, arrayed in a two-dimensional matrix and connected to plural ink supplying routes connected to plural common ink branch paths one by one through a common ink main path, and ejects ink drops from nozzles connected to said plural pressure chambers, where ink was filled through said plural ink supplying routes, one by one, by making pressure changes generate in said plural pressure chambers by using a pressure generating means, comprising:multi layered plates, wherein: said multi layered plates at least include a nozzle plate for forming said nozzles, a common ink path plate for forming said common ink main path, said plural common ink branch paths, and a part of connecting paths that connect said nozzles to said plural pressure chambers one by one, an ink supplying plate for forming said ink supplying routes and a part of said connecting paths, and a pressure chamber plate for forming said plural pressure chambers, and a connecting path plate between said ink supplying plate and said pressure chamber plate, wherein: said ink supplying plate also works as air dampers for said plural common ink branch paths.