C7770-60013 ENCODER STRIP DNJ-500/800 42inch (A0) FOR USE IN HP DesignJet 500 C7769B HP DesignJet 500 C7769BR HP DesignJet 500 C7770F HP DesignJet 500ps C7769C HP DesignJet 500ps C7769CR HP DesignJet 800 C7779B HP DesignJet 800 C7779 HP DesignJet 800ps C7779C HP DesignJet 800ps C7779CR