By default, CardExchange® Producer does not print records if a signature is not available when batch printing. If you have a Premium of higher edition then you can change this behavior as well other actions.
You can set print actions when image is available or not available like acquire image, skip printing, print without an image, etc.
It is also possible to set other actions like Ask for confirmation, show image editor, etc. One important and useful one is the Import instead of acquire. This changes the behavior of the Capture Signature button in the ribbon, but more important, the Capture Signature button in the Actions pane. So if you are not capturing signatures with a signature pad but always import them, select this option and have easier access to your signature files.
If you want to use these settings for all loaded card-templates, make sure you check "Apply these settings to all loaded cards"