journalctl in Linux shows the logs, but in the terminal the log-data seems to be not visible or truncated

On my Fedora 19 box, logs are written by journald. The logs can
be retrieved by journalctl.

But on a "standard" terminal the necessary data is not visible at all.

The secret feature, I found after searching on the net is, to use the cursor right keys , which scroll the display:

and like in my case you see the necessary data which hints for the problem.