Select the 'settings->transforms' option to set scanned images rotation and image effect (such as flip, negative, etc…).To Select Output Mode, A-PDF Image to PDF will create PDF from Scanner with different printing Resolution based on Output Mode.You can crop, rotate, flip, sharpen, and add effects to your scanned images by using 'image tool bar' That will display image files in right View window. You can view any of the images in the window by 'clicking' them. After finishing scanning, the scanned image will be displayed in the A-PDF Image to PDF left window (Image Thumbnail).

Free download and Install A-PDF Image to PDF.

You can use A-PDF Image to PDF ( free download here) to scan paper to pdf by using hp scanner, it provide a simple way to scan paper documents directly to image files and then convert them to PDF here is an easy tutorial to tell you step by step