We have a client that has asked if black and white scanning can be forced. If if they selected color on the scanner they would want the images stored in LF as black and white.
I am not sure of such settings but if there is no such setting then one solution could be, to get documents go through Quick fields, once they are in the Laserfiche, and convert them in to B&W (using Color Removal).
So I have the client using the color removal in the scanner interface for now.
This seems to work but can be removed by the end user since they are not locked out of that setting. The final answer is to probably pick up Quick fields so I can set that and lock it down. So your answer is pretty close to the only way that I know how to force black and white on the scan. With a locked QF session I can do it at the time of scanning.
Yes John, You could use Color Removal in scanning as you mentioned above, but this could be removed by the scanning user (unknowingly or by mistake) and would result in scanning documents in color until you come to know. Also, you will need to keep these setting at all the scanning stations. And using Quickfields will make this processes automated and centralized and important of all, out of the reach of the scanning staff 
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Hi John,
In short I think the answer is no you can't, but as Uzair says you could convert them all afterwards to B+W. If the customer does not have Quick Fields then you can also use Photodocs to accomplish the same thing.
Hope this helps!
Try these settings in Tools\Options (see printscreen below).
I believe the default of "Import monochrome" will bring in all scanned documents as greyscale instead of full color, although I just tested it for drag-n-drop of a Word document and it did not remove the color on the Word doc.