Can you please send me the documentation on bulk printing of forms .
Can you even send me about digital signatures also.
Regarding the digital signatures:
You can add a signature field to your form from the standard library in Adobe Designer.
You can then check the details when the form is submitted using the <a href="https://help.sap.com/javadocs/NW04S/current/wd/com/sap/tc/webdynpro/clientserver/adobe/pdfdocument/api/IWDPDFDocumentSignature.html">IWDPDFDocumentSignature interface</a> which is part of the PDFDocument API.
Hope that helps.