[magento] How to get a product's image in Magento?

// Let's load the category Model and grab the product collection of that category

$product_collection = Mage::getModel('catalog/category')->load($categoryId)->getProductCollection();

// Now let's loop through the product collection and print the ID of every product 
foreach($product_collection as $product) {
  // Get the product ID

$product_id = $product->getId();

  // Load the full product model based on the product ID

$full_product = Mage::getModel('catalog/product')->load($product_id);

  // Now that we loaded the full product model, let's access all of it's data

  // Let's get the Product Name

  $product_name = $full_product->getName();

  // Let's get the Product URL path

  $product_url = $full_product->getProductUrl();

  // Let's get the Product Image URL

  $product_image_url = $full_product->getImageUrl();

  // Let's print the product information we gathered and continue onto the next one

 echo $product_name;

  echo $product_image_url;


}