Abstract: An engagement part fitted in an outer package of an ink cartridge is provided with: a fit-in rib which is provided at a circumferential edge on a rear side and which serves as a guide upon engagement with an opening of the outer package; an engagement rib provided upright at the circumferential edge of the engagement hole in the same direction as a direction of the fit-in rib; and a bonding region for bonding a communication tag that performs near field radio communication with a printer. A tag-removing hole which is formed in the bonding region and which is to be removed from a bonding surface side of the communication tag with a bar-like member inserted is formed in a formation region as the bonding region located in a first quadrant and a fourth quadrant in an orthogonal coordinate system.

Abstract: An engagement part fitted in an outer package of an ink cartridge is provided with: a fit-in rib which is provided at a circumferential edge on a rear side and which serves as a guide upon engagement with an opening of the outer package; an engagement rib provided upright at the circumferential edge of the engagement hole in the same direction as a direction of the fit-in rib; and a bonding region for bonding a communication tag that performs near field radio communication with a printer. A tag-removing hole which is formed in the bonding region and which is to be removed from a bonding surface side of the communication tag with a bar-like member inserted is formed in a formation region as the bonding region located in a first quadrant and a fourth quadrant in an orthogonal coordinate system.

Abstract: An exhaust fan comprising rotatable fan blades, a motor for rotating the blades, a case for mounting and surrounding the blades, and a band detachably disposed and surrounding the case for permitting removal of a coating film from the case, the film being a coating for covering the case and the band for protecting the case from dirt, especially cooking grease.

Abstract: A peelable film-forming paint is disclosed which is used for removing contamination from and protecting the surface of equipment subject to contamination such as oil, and which contains film-forming components of a polyurethane resin and an isocyanate resin dissolved in a volatile solvent. Such a paint is also disclosed which further contains less than 15% by weight of ethylene glycol monoalkyl ether.