You should upgrade your version of Wkhtmltopdf to at least 0.12.0 in order to get a correct display of headers and footers as well as support for table-breaking between pages.
1) Download wkhtmltopdf version from wkhtmltopdf.org depend on your system arch (32 or 64 bit)
2) Install the package using commnad :
sudo dpkg -i wkhtmltox-0.12.1_linux-trusty-amd64.deb
3) Copy binary or wkhtmltopdf to /usr/bin location from ./usr/local/bin use command
sudo cp /usr/local/bin/wkhtmltopdf /usr/bin/
4) Restart Odoo server and try once again.