Abstract: An image forming system includes a transport unit that transports a recording medium by using a roller; a transfer unit that applies a transfer voltage by using a transfer body and that transfers a toner image to the recording medium that is transported by the transport unit; a fixing unit that fixes the toner image by using a heat roller to the recording medium to which the toner image is transferred; and a processor configured to: implement temperature control on the heat roller, based on a result of detection of an electric current value detector that detects an electric current value of an electric actuator that rotates the roller and a result of detection of a resistance value detector that detects volume resistivity of the recording medium when the toner image is transferred to the recording medium after the electric current value detector detects the electric current value.

Abstract: A hot-melt pressure-sensitive adhesive composition comprising (a) 100 parts by weight of a specific grafted block copolymer material formed by the graft reaction of at least one block copolymer comprising at least one polybutadiene or polyisoprene block and at least two polystyrene blocks with at least one unsaturated carboxylic acid monomer and/or derivative monomer thereof and (b) 50 to 250 parts by weight of a specific tackifier mixture consisting of a tackifier S comprising at least 50% by weight of a terpene resin having a softening point of 60.degree. C. or more and a tackifier L comprising at least 50% by weight of a terpene resin having a softening point of 30.degree. C. or less and having an S/L mixing weight ratio of 9/1 to 3/7, and optionally 1 to 50 parts by weight of a softening agent has been found to be excellent in holding power especially for paper.