Image output device

An image output device comprising:

• an image receiving circuit for receiving picture data containing density value data and position data representing border positions of a region having a density value indicated by the density value data;
• an image processing circuit for converting received picture data into image data;
• an image memory circuit for storing the image data, said image memory circuit being addressed every constant number of bits and changing a memory capacity corresponding to a resolution of the region;
• and
• an image output circuit for reading and outputting the image data from said image memory circuit,
• wherein said image processing circuit comprises:
• a tone pattern generating circuit for generating a tone dot pattern having colored dots the number of which corresponds to the density value indicated by the density value data;
• a closed region assigning circuit for assigning a closed region on said image memory circuit by address information, said closed region assigning circuit including a first generator circuit corresponding to the position data for generating an address in which the border positions of the closed region exist, and a second generator circuit for generating a parameter indicating a bit in the address in which the border position exists and outputs the address and the parameter as the address information;
• and
• a filling-out processing circuit for writing the tone dot pattern generated from said dot pattern generating circuit in the closed region by said address information.