Patent ID: 6191866
Filing Date: 2001-02-20
Classification: G06K

Abstract:
A printer having input means for receiving rasterized data from a host computer and output means for transmitting the input rasterized data to a printer engine, comprising:a first memory for storing the data received from said input means;a second memory for temporarily storing the data read from said first memory;means for comparing a dot density of the data with a dot density of said printer engine; andvideo data generating means which successively reads the data corresponding to one line from said first memory in accordance with a horizontal synchronization signal and transmitting the data corresponding to said one line read from said first memory to said printer engine through said output means when the dot density of the data corresponding to said one line is the same as the dot density of said printer engine; and, when the dot density of the data corresponding to said one line is 1/n of the dot density of the printer engine, said video data generating means transmitting data corresponding to said one line to the printer engine through said output means by reading the data corresponding to said one line from said first memory in accordance with a first horizontal synchronization signal and also temporarily storing the data corresponding to said one line read from said first memory in said second memory, and then reading the data corresponding to said one line temporarily stored in said second memory and then successively transmitting the data corresponding to said one line temporarily stored in the second memory n-1 times to said printer engine through said output means, each of said n-1 times for successively transmitting the data corresponding to said one line being in accordance with a corresponding successive horizontal synchronization signal following said first horizontal synchronization signal, ""n"" being a positive integer.