Can I imprint information such as the signer name, reason, date and time on the signature image?

There is no inbuilt function within our SDKs to achieve this.

If you are using the Signature SDK you can load the bitmap for the signature image into an image manipulation application of your choice and stamp the extra information on it yourself.

Please note that you should not attempt to do this if you are using the "RenderEncodeData" flag with RenderBitmap() to encode the signature data (i.e. the biometric information) within the signature image.
The embedding of any additional data within the image could compromise the encoded biometric data.