Image-forming apparatus

An image-forming apparatus in which, using a photosensitive member and a toner, an unfixed image of the toner is formed on a transfer medium, and the unfixed image on the transfer medium is fixed by a heat-and-pressure fixing means,

• wherein a delivery guide member, which guides a delivery of the transfer medium, is positioned in a vicinity of the heat-and-pressure fixing means, has a value of triboelectric voltage not greater than 500 V as measured by a triboelectric voltage measuring method according to JIS L1094B,
• wherein said delivery guide member is formed of an antistatic polymer composition containing the following components (A) to (D):
• (A):
• a polymer of at least one or any combination of two or more, selected from a group consisting of polyester, polycarbonate, polyamide, polyoxymethylene, polyphenylene sulfide, polyether imide, polyether ether ketone, polyketone, polysulfone, polyether sulfone, polyamide-imide, polyarylate, polyester carbonate, polyphenylene oxide, ABS resin, polystyrene, polypropylene, polyethylene, and olefin copolymers;
• (B):
• a polyether type ion-conductive high polymer;
• (C):
• at least one compound selected from the following compounds (I), (II) and (III) provided that said compounds (I) and (II) are contained at the same time when said compound (III) is not contained:
• (I):
• at least one acid group feed source selected from a group consisting of a hydrocarbon acid having 7 to 54 carbon atoms, a sulfonic acid having 7 to 54 carbon atoms, an organic polymer having a carboxyl group, and an organic polymer having a sulfonic acid group;
• (II):
• at least one metal ion feed source selected from a group consisting of a calcium ion, a copper ion, a sodium ion, a potassium ion, a lithium ion, a magnesium ion, and a zinc ion, and capable of reacting with an acid group of the acid group feed source;
• and (III):
• at least one metal salt (the metal being selected from the group consisting of calcium, copper, sodium, potassium, lithium, magnesium, and zinc) of at least one compound selected from the group consisting of a hydrocarbon acid having 7 to 54 carbon atoms, a sulfonic acid having 7 to 54 carbon atoms, an organic polymer having a carboxyl group, and an organic polymer having a sulfonic acid group;
• and
• (D):
• a plasticizer for said component-(B) polyether type ion-conductive high polymer.