Printer reprinting the allready printed pages

Page 143 of the manual

Select the tone curve type from [No Correction], [Over Exposure], [Under Exposure], [High
Contrast], and [Invert the Negative/Positive Image].

https://www.manualslib.com/manual/1126324/Canon-I-Sensys-Mf3010.html?page=143&term=Negative&selected=1#manual

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Are your print commands ok for printing ALL pages? check
Do you not have the printer manual for troubleshooting?

The original paper size is different to copy paper size.

That is best bet since it appears that your print head is fubar and Canon charges a fortune for them. Cheaper to get a new printer with warranty.

If you are using Linux, you can retrieve your old print jobs and reprint them easily. Go to localhost:631 in a web browser. From there, you can view your print jobs by clicking the Jobs tab at the top and then click on the Show All Jobs button.

This has proved very useful to me in the past, especially when printing a web page to my wireless printer, only to find out that the printer decided to not work properly and the webpage expired before I could reprint.

If there is an error like a jam or something the machine will reprint the fax. Otherwise the fax is not available to print again after it's already printed successfully.

I have seen several things fix a problems with reprint like yours depending on the spacing between the prints. There is a registration page in the service manual that points likely faults by the distance between reprints. This is based on the diameter of the failed part. Transfer roller, Print cartridge, and the fuser.

There is a service update from Canon, where a part needs to be change in the laser area. You can try to slam the toner door shut to see if it changes it temporarily, but a laser shutter arm needs to be changed.

Try printing a test page. Is it also blank? If so, you should check your ink system (cartridges full, etc.)

Clean the heads, the printer is not reading cartidges. Is yours a model that needs the ink levels reset to funtion correctly, then do this too.