【Oki Electric】 DP-1000

This was a wire dot line printer which was able to print kanji (Chinese characters) at high speed using the multi-head system. It had the following features:

1) It printed sharp "Minchotai" kanji at high-speed.
2) It also enabled graphic printing.
3) By using the multi-head printing system, where multiple 24-pin heads are arranged in a horizontal array, it was possible to reduce acceleration of the printing head at spaces compared to the system where printing magnets are arranged horizontally in a row. This reduced noise and vibration even during high-speed printing.
4) High-printing quality was achieved by using a DC servomotor as the space motor for the printing head, and a lead screw as the space mechanism.

The DP-2000 kanji dot line printer, which was commercialized in 1989, had the following features.

1) It enabled printing at 240 line/min in high-speed kanji mode (font with simplified dot density).
2) It automatically determined the total number of dots in data to be printed in one line, and in the case of high duty printing, it printed one line by dividing it at least 2 times, thereby smoothing power consumption.
3) The printer was equipped with the JIS-C-6220 alphanumeric/kana font as a standard feature, and JIS Level 1 and JIS Level 2 kanji fonts could be added as an option using JIS-C-6234.
Specifications
  DP-1000 DP-2000
Printing system Multi wire head system Multi wire head system
Printing speed Kanji (Chinese characters) 125line/min
Alphanumeric/kana 220line/min
Kanji (Chinese characters) 180line/min
High-speed kanji (Chinese characters),Alphanumeric/kana 240line/min
Character composition Kanji (Chinese characters) 24×24dot
Alphanumeric/kana 7×18dot
Kanji (Chinese characters) 24×24dot
Alphanumeric/kana 7×18dot
Character dimensions Kanji (Chinese characters) 3.45×3.45mm
Alphanumeric/kana 1.89×2.46mm
-
Head pin diameter 0.2mm -
Dot spacing 0.141×0.141mm(1/180inch) 0.141×0.141mm(1/180inch)
Characters per line Kanji (Chinese characters) 88char/line
Alphanumeric/kana 132char/line
Kanji (Chinese characters) 90char/line
Alphanumeric/kana 132char/line
Character spacing Variable in integer multiples of 1/180inch Kanji (Chinese characters) 1.5/10inch(standard)
Alphanumeric/kana 1/10inch(standard)
Line spacing Variable in integer multiples of 1/180inch 1/6inch(standard)
Linefeed operation time 40ms 40ms
Paper feed system Paper feed system Pin tractor feed system
Printing paper 127–406.4mm(5–16inch)
Continuous folding paper with sprocket holes
127–406.4mm(5–16inch)
Continuous folding paper with sprocket holes
Copy capability Original + 4 sheets with 32kg carbon paper or pressure sensitive paper Original + 4 sheets with 32kg carbon paper or pressure sensitive paper
Printing pressure switching Manual switching over 5 steps to suit paper thickness  
Printing ribbon Open reel 25.4mm×60m Open reel 25.4mm×60m
Code used JIS7 UNIT CODE (JIS-C-6220) JIS7 unit code (JIS-C-6220) or 8 unit code
Interface Oki standard parallel interface Oki standard parallel interface
or Centronix compliant interface
External dimensions W615×D580×H925mm W615×D620×H925mm
Weight 110kg -
Noise 60dBA max. during operation
50dBA max. during standby
60dBA max. during operation
55dBA max. during standby
Power consumption 450VA during operation 90VA during standby 1800VA during operation 200VA during standby

  
Oki DP-1000