Oracle Reports can be picky when it comes to locating image files. If the image which is supposed to appear in the report is referenced from a shared network drive does not appear (the path to the image is shown instead), try referencing the share drive location using a fully-qualified domain name (FQDN). In Oracle Reports 11gR2, images in share drive locations will need to be referenced by a FQDN.
Images located in share drives do not appear on Reports
Oct 8, 2012