The continued use of your Hewlett Packard colour inkjet printer is reliant upon the use of quality maintenance products and the CH644A certainly falls well within this category.  Whether you opt to have one continuously on hold and ready to go, or have waited for a prompt from your HP Designjet Z6200 42-in and HP Designjet Z6200 60-in you are sure to glad of your purchase.Fully guaranteed to be compatible with all printers listed on this page and with the unspoken mark of quality that original Hewlett Packard products carry, the CH644A is a pleasure to use.