A liquid crystal polyester resin mixture having a stabilized plastication time and accordingly possible to be molded in constant cycles and giving a molded article excellent in mechanical properties and thermal stability is provided. Inside the housing, there are provided an image carrying member, a developing unit, a driving force transmission unit, a contactseparation mechanism, a transmission enabledisable mechanism, a cover movably supported by the housing, and a single link member configured to move in association with an openingclosing movement of the cover. The side-by-side configuration allows the interposing of the dielectric layer between the capacitor electrodes to be formed without as stringent a fabrication environment as is conventional.