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La taille effective du code d&eacute;pend d&acute;un  					grand nombre de facteurs ind&eacute;pendants les uns des autres,  					dont:</p> 				  <ol> 					<li>La quantit&eacute; de donn&eacute;es</li> 					<li>Le type de donn&eacute;es (num&eacute;rique, alphanum&eacute;rique,  					  caract&egrave;res sp&eacute;ciaux, etc. ...)</li> 					<li>La t&eacute;chnique de marquage</li> 				  </ol> 				  <p>et la taille de module en r&eacute;sultant. La taille de  					module, ou plus pr&eacute;cis&eacute;ment les mesures d&acute;une  					cellule de donn&eacute;es peuvent en principe &ecirc;tre choisies  					librement. La structure du code n&acute;est pas li&eacute;e  					&aacute; aucune dimension fixe. La plus petite taille de module  					que l&acute;on peut marquer d&eacute;pend uniquement du proc&eacute;d&eacute;  					de marquage.<br> 					Si le module peut ensuite &ecirc;tre d&eacute;cod&eacute;,  					d&eacute;pend de la qualit&eacute; du marquage et du repect  					des sp&eacute;cifications de la Norme ISO DIS 16022.</p> 				  <p>Dans le tableau suivant, on utilise comme r&eacute;f&eacute;rence  					pour la comparaison des tailles de syboles, l&acute;imprimante  					&aacute; transfert thermique.<br> 					Cependant, dans les applications Data Matrix on utilise souvent  					un proc&eacute;d&eacute; de marquage en direct.<br> 					La cat&eacute;gorie c) dans la colonne &quot;R&eacute;solution  					de l&acute;impression&#147; part d&acute;une taille de module  					d&acute;environ 0,2mm. C&acute;est la taille typique de marquage  					en direct sans contact, par le jet d&acute;encre ou gravure  					laser. Avec la gravure laser on peut obtenir des modules nettement  					plus petits, mais il faut alors bien v&eacute;rifier qu&acute;on  					obtient un contraste suffisant pour le d&eacute;codage.</p> 				</td>                 <td colspan="3">&nbsp;</td>               </tr>             </table> 			<br> 			<table width="100%" border="0" cellspacing="0" cellpadding="3">               <tr bgcolor="#003366" valign="top">  				<td width="102"><font color="#FFFFFF"><b>Taille de<br> 				  symbole</b> </font></td> 				<td width="136"><font color="#FFFFFF"><b>Donn&eacute;es<br> 				  </b></font></td> 				<td colspan="2"><font color="#FFFFFF"><b>R&eacute;solution <br> 				  d&acute;impression</b></font></td> 				<td width="96"><font color="#FFFFFF"><b>Taille du<br> 				  module</b></font></td> 				<td width="136" bgcolor="#003366"><font color="#FFFFFF"><b>Taille  				  du code</b></font></td> 			  </tr> 			  <tr bgcolor="#003366" valign="middle">  				<td width="102" height="20">&nbsp;</td> 				<td width="136" height="20"><font color="#FFFFFF"><b>num&eacute;rique/<br> 				  alphanum&eacute;rique</b></font></td> 				<td width="64" height="20"><font color="#FFFFFF"><b>300dpi</b></font></td> 				<td width="58" height="20"><font color="#FFFFFF"><b>600dpi</b></font></td> 				<td width="96" height="20"><font color="#FFFFFF"><b>&nbsp;</b></font></td> 				<td width="136" height="20" bgcolor="#003366"><font color="#FFFFFF"><b>Longueur  				  d&acute;ar&ecirc;te</b></font></td> 			  </tr> 			</table> 			<table width="100%" border="0" cellspacing="1" cellpadding="3" bgcolor="#666666"> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%">10x10<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="20" height="20">  				</td> 				<td width="23%" valign="middle">6/3</td> 				<td width="11%">a) 5 dots<br> 				  b) 4 dots<br> 				  c) </td> 				<td width="10%">  				  <p>10 dots<br> 					8 dots<br> 					5 dots</p> 				</td> 				<td width="16%">0,42<br> 				  0,33<br> 				  0,21 </td> 				<td width="23%">4,2mmx4,2mm<br> 				  3,3mmx3,3mm <br> 				  2,1mmx2,1mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">12x12<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="24" height="24">  				</td> 				<td width="23%" valign="middle">10/6</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">5mmx5mm<br> 				  4mmx4mm<br> 				  2,5mmx2,5mm </td> 			  </tr> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%">14x14<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="28" height="28">  				</td> 				<td width="23%" valign="middle">16/10</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">5,9mmx5,9mm<br> 				  4,6mmx4,6mm<br> 				  3mmx3mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">16x16<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="32" height="32">  				</td> 				<td width="23%" valign="middle">24/16</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">6,7mmx6,7mm<br> 				  5,3mmx5,3mm<br> 				  3,4mmx3,4mm </td> 			  </tr> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%" height="72">18x18<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="36" height="36">  				</td> 				<td width="23%" height="72" valign="middle">36/25</td> 				<td width="11%" height="72">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%" height="72">&nbsp;</td> 				<td width="16%" height="72">&nbsp;</td> 				<td width="23%" height="72">7,6mmx7,6mm<br> 				  6mmx6mm<br> 				  3,8mmx3,8mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">20x20<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="40" height="40">  				</td> 				<td width="23%" valign="middle">44/31</td> 				<td width="11%">a) 5 dots<br> 				  b) 4 dots<br> 				  c) </td> 				<td width="10%">10 dots<br> 				  8 dots<br> 				  5 dots</td> 				<td width="16%">0,42<br> 				  0,33<br> 				  0,21 </td> 				<td width="23%">8,4mmx8,4mm<br> 				  6,6mmx6,6mm <br> 				  4,2mmx4,2mm </td> 			  </tr> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%">22x22<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="44" height="44">  				</td> 				<td width="23%" valign="middle">60/43</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">9,2mmx9,2mm<br> 				  7,3mmx7,3mm <br> 				  4,6mmx4,6mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">24x24<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="48" height="48">  				</td> 				<td width="23%" valign="middle">72/52</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">10,1mmx10,1mm<br> 				  7,9mmx7,9mm<br> 				  5mmx5mm </td> 			  </tr> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%">26x26<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="52" height="52">  				</td> 				<td width="23%" valign="middle">88/64</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">10,9mmx10,9mm<br> 				  8,6mmx8,6mm<br> 				  5,5mmx5,5mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">32x32<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="64" height="64">  				</td> 				<td width="23%" valign="middle">124/91</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">13,4mmx13,4mm<br> 				  10,6mmx10,6mm <br> 				  6,7mmx6,7mm </td> 			  </tr> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%">36x36<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="72" height="72">  				</td> 				<td width="23%" valign="middle">127/127</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">15,1mmx15,1mm<br> 				  11,9mmx11,9mm<br> 				  7,6mmx7,6mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">40x40<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="80" height="80">  				</td> 				<td width="23%" valign="middle">228/169</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">16,8mmx16,8mm<br> 				  13,2mmx13,2mm<br> 				  8,4mmx8,4mm </td> 			  </tr> 			  <tr bgcolor="#FFFFFF" valign="top">  				<td width="17%">44x44<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="88" height="88">  				</td> 				<td width="23%" valign="middle">288/214</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">18,5mmx18,5mm<br> 				  14,5mmx14,5mm<br> 				  9,2mmx9,2mm </td> 			  </tr> 			  <tr bgcolor="#EEEEEE" valign="top">  				<td width="17%">48x48<br> 				  <br> 				  <img src="../../xtra/datamtrx_code.gif" width="96" height="96">  				</td> 				<td width="23%" valign="middle">348/259</td> 				<td width="11%">a)<br> 				  b)<br> 				  c) </td> 				<td width="10%">&nbsp;</td> 				<td width="16%">&nbsp;</td> 				<td width="23%">20,2mmx20,2mm<br> 				  15,8mmx15,8mm <br> 				  10,1mmx10,1mm </td> 			  </tr> 			</table> 		  </td> 		</tr> 	  </table> 	  <img src="../../xtra/s1.jpg" width="670" height="1">  	  <table width="100%" cellspacing="0" cellpadding="20" bgcolor="#FFFFFF"> 		<tr 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