I'm sorry to hear about the issue that you are experiencing. It appears that the black ink is not encapsulating into the top coating. I think that playing with the print settings may help to improve the results.
The Cannon MX922 uses 5-color ink system that consists of a pigment-based black ink, and four dye-based inks. The particles in pigment based inks (your black cartridge) tend to be larger and may not be absorbing into the top coating as well as dye based inks. I think you will get a better result if you can get your printer to use the dye-based inks to create the black in your design. Here is an article that I found that explains the Cannon black ink cartridges.
http://photo.stackexchange.com/questions/11782/what-is-the-difference-between-canons-black-inksWhen printing from the PDF file click on the "Advanced" button within the printer dialog box. On the pop-up screen, click the checkbox next to "Print as Image" and then click on "OK". Using this setting will instruct the printer to compile the colors used on your design slightly differently, and can sometimes force your printer to use the dye-based colors rather than the pigment black cartridge.
There may be also some settings in your printer settings that you can adjust to get your printer to change the ink output and the density of the black print. Please try a few different settings and see if you get an improved result.
In regards to laser printing - the advantage to laser printing is that the toner is going to fuse to the material so it is normally more resistant to smudging / smearing. Laser printing does typically create a dense black. That being said - you should be able to achieve a more dense black with your inkjet printer with the correct settings. Let me know as I am happy to continue trouble shooting.
I hope this information is helpful.
Dave C.
OnlineLabels.com
Edited by user Sunday, August 14, 2016 10:07:40 AM(EST)
| Reason: fixed typo