If you don't have that toolbox something like this would work:
for i=1:10
imList{i}=imread(strcat('J:\multimedia\photo\',file_name(i).name));
end
By the way, you better pass some image extension (when using dir), otherwise, you have to first check if what is in file_name is indeed an image before trying to reading it. You can use try/catch for that too.
