Xerox workcentre 7830 doesn't allow to change to grayscale on mac

I have two mac book pro's here both are on the network and can print to the xerox work centre 7830 but one has the option to change from color to grayscale, I would think its the driver, so I have uninstalled the printer and resinstalled it with no luck... Any suggestions??  Also the mac book pros are running ver 10.9.5
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Delete the printer driver, then go to:


and delete any Xerox drivers from that folder.

Then download and install a fresh driver from:

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You could also check in the printer preferences on the two Macs to see if they are using the same driver version.
How about you try copying the cups information directly from the working system to the other?

The information is stored in: /Library/Printers/
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Good suggestion, SerialBand.

Just to clarify, Serialband is suggesting you delete the Xerox folder from /Library/Printers on the non-working computer and copy the same folder from the working computer to the non-working one.

You will probably need to do a reboot, or at the very least reset the printing system in the Print & Fax prefs panel as the old printer driver may otherwise still be in memory.
A reboot is not necessary if you stop system preferences and close all printer dialog boxes, then go to the command line and type sudo killall cupsd  You will be prompted for your admin account password.

The next time you access your printer, cupsd will start on its own.
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