A method and implementing computer system are provided for enabling multiple usages of the same printing job separator page. The free reactive groups are capable of reacting with active moieties in a biologically active agent such as a protein or peptide thus forming conjugates between the activated poly and the biologically active agent. The cap body and the upper lid are independent of each other so that the cap body can be rotated without rotating the upper lid and are engaged by a concaveconvex portion. Polysilicon floating gate spacers are formed in the opening. Since the electrical potential between the heater resistor and the transistor is supplied to the inverting input terminal of the operational amplifier, the airflow sensor includes only a negative feedback circuit. The method includes storing the modification in association with the first image.