Control circuit for a printing head of a metal paper printer...

Details Control circuit for a printing head of a metal paper printer... Control circuit for a printing head of a metal paper printer...

G - Physics

06

F

354/229, 354/236

G06F 3/12 (2006.01) B41J 2/425 (2006.01) G06K 15/10 (2006.01)

Patent

CA 1153822

ABSTRACT The disclosure relates to a print buffer, and its addressing, which is used to edit print data for a multiple electrode print head of a metal paper printer wherein the electrodes of the print head are arranged on a slope. The information to be printed is initially stored in the form of a matrix. In accordance with the arrangement of the electrodes in the print head, this information is edited in the print buffer and editing is effected in such a manner that the desired print image is obtained when the print buffer is read column by column. The information stored in a register in, for example, two groups of four bits each, is read in parallel and edited in the buffer. The information of the upper group is stored in buffer 1 and the information of the lower group in buffer 2. Each column address of the buffers comprises four bit positions. The information is written at different points of the four possible bit positions of different column addresses. One buffer line is associated with each electrode of the print head and the information is written into the buffers taking into account the horiz- ontal stagger of the print head electrodes. The buffers are addressed by a suitable logic as a function of the number of electrodes and their mutual spacing. GE 979 044

374166

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