Mosaic printing device for typewriters or similar office machines for printing on a recording carrier in different directions

摘要

When dot matrices are stored in a byte- or word-oriented memory, the matrix can only be rotated by 90 degrees by bit-by-bit processing, for example for generating landscape recordings. The time consumed for this purpose is very great. The invention is based on the object of creating a mosaic printing device which allows optional printing on a recording carrier in different directions with little time consumption. This object is achieved by the fact that the dot matrices in the character generator 24 consist of blocks of 4 x 4 dots each and that a multiplexer 26 is arranged between the character generator 24 and the processor 28, which outputs the dot matrices unrotated for generating portrait recordings or rotated block by block by 90 degrees for generating landscape recordings via the processor 28 to the memory 30. Since the multiplexer 26 can also rotate the dot matrices 36 by 180 and 270 degrees, only one character generator is necessary for a type of lettering in four directions of writing. <IMAGE>