Hello,
First of all what is this echo "('<img src=\"<?php bloginfo('template_url'); ?>/images/logo_1.png\" >')";
?
You need to add
<div class="header-logo">
<?php if( is_page ('Home')){
echo etheme_logo(); }
elseif ( is_page('About')) {
echo "<img src='http://www.claudiofichera.it/wp-content/uploads/2012/06/CF_Title.png'>";
} ?>
</div>
If you want to change main logo, then you need to add it in header-structure file (royal/headers), not in header.php, because if you take a closer look at code in header.php file you’ll see that lines 81-83 display fixed header logo. Also don’t forget to create and use child theme to save your changes and avoid problems with next update.
Regards,
Olga Barlow