Printer with a device for preventing print head from interfering

Details Printer with a device for preventing print head from interfering Printer with a device for preventing print head from interfering

1986-03-05

1987-05-26

Sewell, Paul T.

Typewriting machines

Control of print position along print-line by signal...

400323, 400342, 400355, B41J 1914, B41J 1930

Patent

active

046681140

ABSTRACT:
A serial printer adapted to print on a recording medium consisting of a plurality of paper sheets stacked on each other and temporarily bound with temporary binding or fastening portions provided along opposite side edges of the medium. The printer has a first memory for storing the rightmost character position of a current line, and a second memory for storing the position of the rightmost character of all the characters of previous lines printed in a rightward direction, or the position of the rightmost character of all the characters of all previously printed lines. When the rightmost character of the current line is located to the left of the rightmost character whose position is stored in the second memory, the medium is advanced to the next line. However, if the rightmost character of the current line is located at the same position as, or to the right of, the rightmost character whose position is stored in the second memory, a print head is first moved leftward at the end of rightward printing of the current line, before the medium is advanced, whereby the medium can be fed to the next line without interference of the temporary binding portions with the print head. Similar arrangement is possible for feeding the medium while the print head is located adjacent to the left edge of the medium.

REFERENCES:
patent: 3858703 (1975-01-01), Duley
patent: 3970183 (1976-07-01), Robinson
patent: 4179223 (1979-12-01), Kwan
patent: 4180335 (1979-12-01), Yamada

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