Abstract: An inspection system includes an image capturing unit configured to capture an image of a workpiece, and a processing unit configured to determine quality of the workpiece based on the image captured by the image capturing unit, wherein the processing unit determines whether the workpiece includes a defect based on a second image captured by the image capturing unit in a second inspection step, wherein the processing unit extracts a defective portion candidate of the workpiece based on the second image and a first image captured by the image capturing unit in a first inspection step performed before the second inspection step, and wherein the processing unit changes an inspection condition of the first inspection step based on the extracted defective portion candidate of the workpiece.

Abstract: An optical member has an antireflection coating disposed on a substrate. The outermost layer of the antireflection coating is a crystalline layer having a textured structure containing aluminum oxide crystals. Part or the entire of the crystalline layer contains a carboxylic acid compound. A method of producing an optical member includes a step (a) of forming an aluminum oxide layer containing aluminum oxide on a substrate, a step (b) of forming crystalline layer having a textured structure by bringing the aluminum oxide layer into contact with hot water of 60° C. or more and 100° C. or less or water vapor, a step (c) of applying a coating liquid containing a carboxylic acid compound and a solvent onto the crystalline layer, and a step (d) of removing the solvent of the coating liquid.

Abstract: In a liquid discharge head having a vibration plate provided with piezoelectric driving sections and a substrate which supports the vibration plate and in which pressure generating chambers communicating with discharge ports to discharge a liquid are arranged to correspond to the piezoelectric driving sections, at a region of an end portion of each pressure generating chamber in a longitudinal direction, a portion of the substrate on a side of the vibration plate protrudes along the longitudinal direction to the pressure generating chamber in a stepped state.

Abstract: In a liquid discharge head having a vibration plate provided with piezoelectric driving sections and a substrate which supports the vibration plate and in which pressure generating chambers communicating with discharge ports to discharge a liquid are arranged to correspond to the piezoelectric driving sections, at a region of an end portion of each pressure generating chamber in a longitudinal direction, a portion of the substrate on a side of the vibration plate protrudes along the longitudinal direction to the pressure generating chamber in a stepped state.