A label printer includes a communication interface for sequentially inputting issue label data; a frame memory for storing print pattern data; a printing unit for printing print pattern data stored in the frame memory; and a processing circuit for creating print pattern data corresponding to input issue label data in the frame memory. With the above label printer, the processing circuit determines an empty area of the frame memory which is different from an area occupied by the to-be-printed print pattern data when issue label data is input from the communication interface and creates print pattern data corresponding to input issue label data in the empty area.

Label printer with simultaneous printing and storing

PURPOSE:To prevent the occurrence of an underflow in buffer memory by issuing a transmission request signal from an encoding part when one side of the buffer memory is full, and transferring and controlling data stored in the buffer memory side to an output control part with the transmission request signal and a reception request signal from an output control part. CONSTITUTION:A facsimile image signal which id displayed in black/white binary values and inputted from an input terminal 1 is converted by an encoding part 2 to write it in one of plural built-in buffer memories. When said memory is full or conversion data of input signals of the prescribed number of lines are accumulated, the transmission of data is demanded to a control part 4, and simultaneously said buffer memory is switched to another memory to continue writing of the conversion data. On the other hand, an output control part 3 incorporates two buffer memories, reads out the data written in one memory at a constant speed and outputs it to a facsimile device from an output terminal 5. When the data in said memory becomes empty, the output control part 3 requests the control part 4 to receive the data and simultaneously said buffer memory is switched to the other to read and transmit data.

Hirano Kenichi

Papers

Adaptable buffer memory controller