I have a Canon iP7250. Never had a problem before. Now it starts to print, stops, then ejects a blank sheet. I'm totally baffle by this. Any knowledgeable printer techys out there can offer any help? Thanks.
My Canon printer has been known to do that when there's little bit of paper stuck in it somewhere. (Yes, I know that you'd normally expect to see an error code if there's a paper jam but it seems that just a small blockage can result in blank sheets being printed without an error code showing up). So it might be worth a rummage around inside the printer to see if you can identify any obstruction in the feed path:
https://ugp01.c-ij.com/ij/webmanual/ErrorCode/MG7500%20series/EN/ERR/err_other0100.html
first clear the printer spool(this is like a memory of whats to print).there is info on google how to do this.Then go into printer settings maintenance and run all the routines ie print test ,alignment and all the others.Also check if there is any firmware update and driver update.Then completely power off the printer for at leat 5 mins.Restart and try that.Also check what paper you are using is suitable and correctly loaded in printer.