The XML code come include on default receipt format.
set true ShowLogoHeader property on receipt format, then check the LogoHeader property you can set value here or select on your Register tab on SOA. Then check SUB PrintHeader if have include the option to print Logo.
<SET name="ShowHeaderLogo" custom="true" description="Show Header Logo" type="vbBoolean">True</SET>
<SET name="LogoHeader" custom="true" description="Logo Filename (Header)" type="vbString"> "C:\Imagen.bmp" </SET>
<!--
=============================
SUB: PrintHeader
=============================
-->
<SUB name="PrintHeader">
<!-- Print Header Logo -->
<IF>
<CONDITION> ShowHeaderLogo </CONDITION>
<THEN>
<PICTURE>
<FILENAME> LogoHeader </FILENAME>
<WIDTH> PageWidth </WIDTH>
<LEFT> MarginLeft </LEFT>
<HEIGHT> 0 </HEIGHT>
</PICTURE>
</THEN>
</IF>
<!-- Print Store Information -->
<TABLE>
<BORDER> tbNone </BORDER>
<COLUMNHEADER>
<ALIGNMENT> "^" </ALIGNMENT>
<WIDTH> PageWidth </WIDTH>
</COLUMNHEADER>
<IF>
<CONDITION> ShowStoreInfo </CONDITION>
<THEN>
<ROW></ROW>
<IF><CONDITION> Len(Store.Name) </CONDITION>
<THEN><ROW> Store.Name </ROW></THEN>
</IF>
<IF><CONDITION> Len(Store.Address1) </CONDITION>
<THEN><ROW> Store.Address1 </ROW></THEN>
</IF>
<IF><CONDITION> Len(Store.Address2) </CONDITION>
<THEN><ROW> Store.Address2 </ROW></THEN>
</IF>
<IF><CONDITION> Len(Store.CityStateZip) </CONDITION>
<THEN><ROW> Store.CityStateZip </ROW></THEN>
</IF>
<IF><CONDITION> Len(Store.Phone) </CONDITION>
<THEN><ROW> Store.Phone </ROW></THEN>
</IF>
<IF><CONDITION> Len(Store.Fax) </CONDITION>
<THEN><ROW> Store.Fax </ROW></THEN>
</IF>
</THEN>
</IF>
<ROW></ROW>
</TABLE>
</SUB>
<!--