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AssigneesNippon Telegraph & Telephone Public Corporation, Sharp Kabushiki Kaisha
InventorsIsao Fujimoto, Takeshi Kasubuchi, Masahiko Aiba, Yoichi Shimazawa
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An electronic tabulator for use in non-impact printers and similar data terminal printout apparatus includes a random access memory (RAM) having a capability of storing the maximum of printing carriage positions to be tabulated at random order in response to TAB preset instructions, which in one preferred form may be implemented with MOS integrated circuit technology. While the carriage is moved in incremental steps along a given path in the course of the printing operation, address signals representative of the instantaneous positions of the carriage are developed from a carriage address counter. If there is evaluated an equivalence between the address signal and the preset signal of the memory, the memory produces its output which is in turn applied to the carriage bearing a printing member to indicate that the printing operation should be effected at that position. Because of the volatile nature of the MOS integrated circuit memory in the event of power failure and the like, a rechargeable battery is provided which activates the memory to retain the contents thereof even when power is off.
In a tabulator for use in high speed printers to provide print command signals as a function of the coincidence between a stored carriage position signal and a generated carriage position signal, in combination:
Dependencies are inferred from the claim text.