Electron emitting source, method and image-forming apparatus, with enhanced output and durability

An electron-emitting device comprising, on a substrate, a pair of electrodes, an electroconductive film having a gap in part, connected to said pair of electrodes, and a member comprising carbon having an orientation of a layer structure substantially parallel to a surface of the substrate, said member being provided in the gap portion while being connected to the electroconductive film.

A production method of electron-emitting device comprising a step of forming an electroconductive film on a film comprising a metallic oxide comprising at least one element selected from the group consisting of nickel, iron, and cobalt, provided between a pair of electrodes on a substrate, a step of forming a gap in part of the electroconductive film, and a step of forming a member comprising a principal component of carbon in a connected state to the electroconductive film, in the gap portion.