Able to print not able to scan with printer

Click on Start->Type “services.msc” and hit enter, once you get the services window up

Right click on WIA->Properties->Dependency tab, Check the services name listed there.
 It should contain following services:
*Remote Procedure Call RPC
   ->>DCOM Server Process Launcher
   ->>RPC Endpoint Mapper
Try to start the service if its giving error message,please follow this


*Shell Hardware Detection it might been Disable ,please enable it & start the service
* Right click on WIA->Properties-> Start the service 
Make sure all the above services are started in the services list.
Now u should be able to scan the copy.