I would advise you to use whatever it says on the document. You can continue to print with one or more empty cartridges, but HP recommends replacing them as soon as possible to avoid printhead damage.There is no requirement that the Notary's signature must be in a particular color. In FL, the county clerks 'recommend' using blue ink that is reproducable. Many newer printers require color ink to also print black documents, and if there is no color ink they will not print black. " However, the notary law does not specify a color of ink to be used when signing a notarial certificate. In this article, we will discuss how to print with just black ink when your color cartridge is empty. This technique can save you time and money. Complete only the upper half of the affidavit. This affidavit will be attached to the original birth certificate thus becoming part of the birth record.