Print size changes with photo paper

[Islafurst]

I have a strange problem.  I am trying to print single pages which will eventually become an 8-page booklet to insert in a cd case.  Each page contains 2 images butted up against each other in the centre of an A4 sheet which later gets cut to size (120 x 240mm).  The whole thing printed perfectly as a draft on plain paper but as soon as I set the paper to photo the image shrinks to about 100 x 50mm in one corner of the paper.  I've tried sizing the image to exactly what I want at 300 dpi to match the driver setting but it doesn't make any difference.  Nor does saving it as a .pdf file.  The quality is fine, it's just the size. I'm using a new Canon IP8750 printer.  It's driving me mad.  Any ideas?

Giffy CD.afpub

Giffy_CD_pdf.pdf

[v_kyr]

Check your canon printer driver printing settings ...

• online manual index

43 minutes ago, Islafurst said:

The whole thing printed perfectly as a draft on plain paper but as soon as I set the paper to photo the image shrinks to about 100 x 50mm in one corner of the paper.

Sounds somehow like Layout printing is probably then used for photo paper here, since that would shrink and place into a quarter of an A4 page. See here, check for this and disable it ...

• Page layout printing

[Islafurst]

Thank you v_kyr.  It does look as though that's what happened.  I saw that in the printer dialog but decided it didn't apply and closed it.  I've just looked at it again and read the manual but I find it's disabled by default, you have to select it to use it!  In theory it shouldn't apply unless enabled.  I had to go to Printer Features to set the dpi and paper type and layout wasn't mentioned there.  

In the end I phoned Canon support and they were as puzzled as I am.  They asked for evidence and I've sent them photos of what I get, what I want to get (printed on plain paper), and screenshots of my settings.  Hopefully they'll have an answer for me.

Edited to add:  I haven't heard back from Canon support, but I have found a workaround that gets me my result:  I exported each page of my Publisher document separately as a .jpg and printed them perfectly well on glossy paper from Affinity Photo.  Why did that work when printing from Publisher didn't?

Edited November 28, 2019 by Islafurst
Workaround found for posted problem