I am having a problem with my SP540.  When performing a test print the black does not print properly at all.  I have tried all cleaning methods including soaking the head for serveral hours by filling the capping stations with cleaning fluid.  I have included a picture of my test print.  The printer does not get used on a daily basis, but regularly.  I'm not sure if the head needs to be replaced or not.  The printer is cleaned regularly and is just over a year old.   If anyone has seen this problem before it sure would be appreciated if you could share your thoughts?
 
Thanks
	
		
			
		
		
	
			
			Thanks