%% 
%%  Ein Beispiel der DANTE-Edition
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%%  1. Auflage
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%%  Beispiel 06-03-67 auf Seite 264.
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%%  Copyright (C) 2012 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1,2
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{172.40709pt}
\usepackage[utf8]{inputenc}% adapt maybe
\usepackage[paper=70mm:83mm,pagesize]{typearea}
\setlength\parindent{0pt}
\usepackage{fancyhdr}
\lhead{\small\texttt{newpage}-Demo}
\pagestyle{fancy}
\setcounter{page}{1}
\renewcommand\thepage{Seite \arabic{page}}
\StartShownPreambleCommands
\usepackage{longtable}
\StopShownPreambleCommands
\begin{document}
\begin{longtable}{@{}l c r p{1.5cm}@{}}
L & Z & R & Box\\\hline
l & c & r & 1. Zeile\\ l & c & r & 2. Zeile\\ l & c & r & 3. Zeile\\
l & c & r & 4. Zeile\\ l & c & r & 5. Zeile\\ l & c & r & 6. Zeile\\\newpage
l & c & r & 7. Zeile\\ l & c & r & 8. Zeile\\ l & c & r & 9. Zeile\\
l & c & r &10. Zeile\\ l & c & r &11. Zeile\\ l & c & r &12. Zeile
\end{longtable}
\end{document}