documentclass[11pt,a4paper,titlepage,bibtotoc]{scrreprt}
usepackage{blindtext}
usepackage[automark,plainheadsepline,headsepline,footsepline,plainfootsepline]{scrpage2}
usepackage{mwe}
pagestyle{scrheadings}
ihead[{includegraphics[height=14pt]{example-image-b}}]{{includegraphics[height=14pt]{example-image-b}}}
%ohead[Dep]{Dep}
%ifoot[jobname.pdf]{jobname.pdf}
ifoot[Datei:\jobname.pdf]{Datei:\jobname.pdf \ helllooo}
ofoot[pagemark~ / hspace*{0.1mm} pageref{LastPage}]{pagemark~ / hspace*{0.1mm} pageref{LastPage}}
cfoot[Dep]{Dep}
begin{document}
Blindtext
end{document}