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carl_w Author

Level 1

14 points

Graphics printing blocky after upgrade to Mojave

I have Mojave installed on two machines: a late 2013 iMac and a mid-2018 MacBook Pro. I have an Oki c351dn printer. When I print, any graphics come out completely blocky as if they have been printed at screen resolution or worse. Text is fine. This happens if I use the Oki driver or the Generic PS driver.

I also have an early 2015 MacBook which is still running High Sierra. If I print from this, everything is fine.

I have tried resetting the printing system and doing a factory reset on the printer.

Postscript should be Postscript, right? The OS shouldn't make a difference.

iMac (27-inch, Late 2013), macOS Mojave (10.14), null

Posted on Oct 19, 2018 11:30 AM

40 replies

MMeemMoo

Level 1

9 points

Oct 25, 2018 12:53 PM in response to brycesteiner

I have tried deleting the printer and creating a new one with various software and settings. no difference, still not working :/

carl_w Author

Level 1

14 points

Oct 30, 2018 1:08 PM in response to carl_w

No better in 10.14.1

However I did get a message about OkiPSFilter.plugin needing to be upgraded. May be relevant?

Oct 30, 2018 4:05 PM in response to carl_w

after upgrading try deleting the cache, resetting the SMC and NVRAM/PRAM.

carl_w Author

Level 1

14 points

Nov 3, 2018 10:20 AM in response to carl_w

If you use the generic PCL driver the graphics are no longer blocky. However, you can only print in black and white.

MMeemMoo

Level 1

9 points

Nov 8, 2018 12:27 AM in response to carl_w

yes, Adobe Acrobat Reader is OK. Thank you. (Apple Preview *****...)

macalsto

Level 1

20 points

Nov 12, 2018 4:21 AM in response to MMeemMoo

Same problem with MC362. Trouble ist that embedded pics in word, powerpoint, etc. are blocky too.

Jan 3, 2019 3:51 PM in response to Andypvw

Nothing above works for me! I have been a loyal Apple customer for over 15 years and I am about to go back to PC world. Why doesn't Apple weigh in on this problem?

Jan 22, 2019 3:02 AM in response to teecee1

I am working in an advertising agency where 12 people using Macs all of a sudden can't print to an OKI ES8431 - what is this? No fix, no official statement, no nothing.

tll123

Level 1

54 points

Jan 31, 2019 12:39 PM in response to Crljenak_K

Yes, can confirm the OKI PS Printer Driver Updater OSX10.9_010001_35445.dmg driver fixed the issue.

Feb 10, 2019 10:15 PM in response to Ypepe

Thanks for the info. I will give the firmware update a go and see if it fixes the problem. Will post the outcome.

Graphics printing blocky after upgrade to Mojave