Abstract: The storage apparatus permits preservation under optimum conditions of an only partially used, interchangeable ink jet print head, when not in use on the relative printer; it is apt to accommodate both a print head for black printing and one for color printing, in the same way and with the same orientation as provided for their insertion in the printer's print head carriage, in a single cavity. Insertion of the print head in the storage apparatus automatically selects and commands the specific capping system for that type of print head, capable of efficaciously isolating and protecting the nozzles, even for long periods of time.