loop problem – don't show blog info

I have a really simple loop as follows:

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<div id="content_outer">
            <div id="content_inner">
            <?php get_sidebar(); ?>
          <div id="content">
                <h1><?php the_title(); ?></h1>

                <small><?php the_time('F jS, Y') ?> by <?php the_author_posts_link() ?></small>
               <?php the_content(); ?>
                Posted in <?php the_category('s, '); ?> | <?php comments_popup_link('No Comments', '1 Comment', '% Comments'); ?> |
                <?php edit_post_link( __( 'Edit' )); ?>
    <?php endwhile; else: ?>
 <p>Sorry, no posts matched your criteria.</p>
    <?php endif; ?>

This works for my blog page, all the blog details like author, time & date etc. show, but these details show up on all my other pages as well which I don’t want. Can I add a condition to the loop that will only show these details on the blog page?

I am very new to WP and any help would be great! Thanks!