I have an Epson ET4550 and I have horizontal lines across the page when printing. On black and white text, the banding appears as a light space through the middle of a few lines of print. On color photos, there's a distinct yellow line about every 1/8 inch across the picture. I've cleaned the printer head, realigned the printer head, cleaned the roller, and flushed the ink lines. Does anyone know what I can do to resolve this problem before I throw this printer out the front door of my house? Thanks!!