Patent ID: 9457572
Filing Date: 2016-10-04
CPC Classification: B41J,C08G,C09J

Claim Text:
1. A method for producing an inkjet head that is produced by forming a film on a head chip having a channel member with an ink channel formed thereon and joining an end surface of the head chip coated with the film to a nozzle plate, the method comprising applying an adhesive containing spherical particles to at least one of the end surface of the head chip and a joint surface of the nozzle plate and then joining the nozzle plate, wherein a volume average particle diameter of the spherical particles is in the range of 0.95×Rz (MV) to 2.0×Rz (MV), and wherein the spherical particles are in the range of 0.1 volume % to 10.0 volume % in the adhesive, wherein Rz is one surface roughness index specified by JIS B0601:2001 and is a maximum height of the end surface of the head chip coated with the film when a reference length of a surface joined to the nozzle plate is 2.5 mm, and Rz (MV) is an average value of Rz obtained by measuring five positions, wherein a coefficient of variation of a particle diameter of each spherical particle is not greater than 1.8%, and wherein the film contains polyparaxylylene or a polyparaxylylene derivative.