Decoupage Image Transfer
A Simple Image Transfer Method

Mixed Media Collage using Decoupage Image Transfer Technique by Cyndi Lavin.
Using decoupage medium to transfer printed images.
About 30 years ago I decoupaged a wedding announcement by first removing the letters only off the announcement by putting decoupage medium on the front of the announcement and then being able to rub the paper off the back of the announcement.
All that is left is the words on the decoupage medium after it is dried.
Then I was able to decoupage the words to a piece of wood with a wedding dress in the background.
I have forgotten the exact way to do it but it turned out beautiful.
Do you know how it is done?
Debra
Yes I do know how it's done and you've pretty much described the process.
It won't work with all types of paper. Make sure the decoupage medium has dried thoroughly so that it has grabbed and absorbed the ink.
If the paper or cardstock is thick like a wedding invitation, carefully separate the pulpy backing paper and gently pull it away. Lay a damp cloth over the back of the project.
When the remaining paper is sufficiently moistened, remove the cloth and rub away the rest of the paper backing - leaving just the ink.
Do a test before you try this image transfer technique. You don't want to risk ruining a special memento.
Using your example of a wedding invitation, you could try this out on the little card for the reception.
That said, there are many other ways and many new materials for making image transfers these days.
My friend, mixed media artist Cyndi Lavin, has a whole section of <image transfer tutorials on her website. You might want to check there first.
Here is a list of all decoupage related articles on The Artful Crafter.
Recommended Reading
These books are excellent resources for decoupeurs. Not only do you get tips and techniques, but also artwork that you can use in your own projects.
Absolute Beginner's Decoupage: The Simple Step-By-Step Guide to Creating Beautiful DecoupageBy: Alison Jenkins
Collage Discovery Workshop: Make Your Own Collage Creations Using Vintage Photos, Found Objects and EphemeraBy: Claudine Hellmuth
930 Matchbook Advertising Cuts of the Twenties and Thirties (Pictorial Archive Series)
By: Trina Robbins
New Decoupage: Transforming Your Home With Paper, Glue, and Scissors
The Victorian Scrap Gallery: A Collection of over 500 Full-Color Victorian-Era Images
Decoupage: A Practical Guide to the Art of Decorating Surfaces with Paper Cutouts