https://bugs.chromium.org/p/chromium/issues/detail?id=98940

This is one of the ones where a bunch of reported bugs for the same issue were merged and then this was marked as resolved when it's not.

Request inhouse team to take a look at this issue as colour printer is not available with ET team

One of our customers using PaperCut NG/MF also have this problem. When they tried to print from Chrome using an IPP printer and chose Black and white inside Chrome and in the Driver printing option, the output still in color. Attached is the postscript file that Chrome send to the IPP printer.

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anthony.tridgell@ Tested this issue on Windows 10 using the latest Stable 62.0.3202.94 and unable to reproduce the issue by following the below steps.

1. Launched Chrome and navigated to a webpage.
2. Gave print on the page -> changed the color option to Black and White -> clicked on Print.
3. Can observe the page printed in Black and White.

We have tested this issue using Ricoh Color Printer. As HP LaserJet Pro M452dn is not available at TE end to test this issue, requesting someone from Internal>Printing team to please look into this and help in further triaging.

Thanks..

This problem is likely printer-specifc, so for each printer that does not work, we need to know:
1) The printer make model
2) The driver version number.

e.g. for "HP LaserJet Pro M452dn with the latest PCL6 driver" - can you check the driver version number?

For "Canon color copier" and "Canon Pixma color printer" we need more details.

re: comment 4 - can you file a separate bug for PaperCut?

thestig@ Thanks for the update.

anthony.tridgell@ Can you please update the thread with the requested details mentioned in comment #6.

Thanks...

Here's the requested driver information.

HP Color LaserJet Pro M452 v3 PCL 6 Print Driver
Version: 8.00.1326.3536
Oct 21, 2016 (latest)

Thank you for providing more feedback. Adding requester "susanjuniab@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Thanks for the info. Can you try this test?

1) Instead of using Print Preview, can you try printing a test webpage with the native OS print dialog by pressing ctrl + shift + p?
2) In the native print dialog, select B&W, and see if the print out is indeed B&W.

@10: I've done this workaround and it works. That's the issue. There should be no reason why we should have to use a workaround for something that should work. It works perfectly fine with everything else including other browsers.

Thank you for providing more feedback. Adding requester "thestig@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

re: comment 11 - On Windows, there is a standard way for programs to set color vs B&W. Chromium does just that, which is why it works for many (most?) printers. For whatever reason, the printer (drivers) affected by this bug does not under that, so we'll try to fix that.

When selecting black and white in the Chrome print preview it still prints in color.

Black and white printing works if I use another browser, system print dialogue, and Microsoft office applications.

HP LaserJet 500 colorMFP M570dn

I suspect the issue is because the newer HP printer drivers don't have a clear B&W vs Color setting like older HP Color Laserjets. See attached driver setting screenshot for comparison. Maybe for these HP printers, the B&W setting should set "Print in Grayscale" to "on".

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Edge shows the older HP Color Laserjet's color options as Color/Monochrome, and the newer Laserjet's options as Color/Grayscale. So there should be some way of controlling the newer printer's color options.

Adding skau@ and weifangsun@ who own the print driver work on chrome devices.

Adding katierh@. Just realized this is a cloud print issue.

Wait what? How is this a cloud print issue? I'm using Chrome on a Windows device to print to a locally installed printer. Unless there's something I'm missing that you're considering cloud print.

Jumped the gun on that one. Ignore the cloud print comment.

thestig@ and skau@ should be able to help / advise on chrome printing and chrome printing UI issues.

+robliao for advice on Windows (printer) APIs.

Sounds like Comment #15 and #16 might have addressed the issue. 

Third-party drivers do make this harder than it should be.

@22: Wait what? This has nothing to do with third party drivers. It's a driver straight from HP. And yeah, that may be the cause in 15/16. We need a resolution.

@23: HP is considered a third-party driver developer in the context of Windows and may present a settings UI that doesn't conform to general expectations on how printer settings UI should behave.

@24: Ahh OK. That makes more sense now. I've never heard it put in those terms before. Usually when I hear third-party driver, they're referring to a driver not developed by the manufacturer of the device.

Rob: Try installing the "HP Color LaserJet Pro M452 PCL 6" driver and then print preview in Edge. You'll see Edge somehow understands this setting.

Folks from Papercut also filed  bug 824643 . FYI.

Can you try Chrome Canary and see if this fixed? I did some work on  bug 824643 .

Specifically, 67.0.3396.0 or newer. Chrome Canary is currently 68.0.3397.0.

@28 Who are you directing that to?

Thanks

re: comment 29 - You, of course. Can you try Chrome Canary or Chrome Dev Channel to see if this issue has been fixed there?