US Patent 7609394 Printing controlling method and printing control program thereof

With a printing controlling method, to reduce time for image output even where a text confirmation time is required for a preview, text created by an operator is converted into printing data in parallel with a preview and added with a storage command to be transmitted to an image forming apparatus, and the data are stored in a received data storage buffer to be on standby with waiting for a subsequent command. Where reedition is needed through the preview, an erase command is transmitted from an image processing apparatus to cancel the printing data stored in the received data storage buffer. Conversely where reedition is not necessary, a printing start command is transmitted from the image processing apparatus to execute analysis of the printing data stored in the received data storage buffer, thereby stepping forward to a procedure for printing execution.