Wednesday 7 December 2011

24-pin printers

By the mid 1980s, manufacturers had added the pincount of the appulse printhead from 9 pins to 18, or 24. (At 27 pins, the Apple ImageWriter LQ captivated the almanac for customer market). The added pin-count acceptable above print-quality which was all-important for success in Asian markets to book clear CJK characters.4 In the PC market, about all 9-pin printers printed at a defacto-standard vertical angle of 9/72 inch (per printhead pass, i.e. 8 lpi). Epson's 24-pin LQ-series rose to become the fresh de-facto standard, at 24/180 inch (per canyon - 7.5 lpi). Not alone could a 24-pin printer lay bottomward a denser dot-pattern in a single-pass, it could accompanying awning a beyond area.

Compared to the earlier 9-pin models, a fresh 24-pin appulse printer not alone produced better-looking NLQ text, it printed the folio added bound (largely due to the 24-pin's adeptness to book NLQ with a distinct pass). 24-pin printers again this accomplishment in bitmap cartoon mode, bearing higher-quality cartoon in bargain time. While the text-quality of a 24-pin was still visibly inferior to a accurate letter-quality printer—the daisy caster or laser-printer, the archetypal 24-pin appulse printer outpaced best daisy-wheel models.

As accomplishment costs declined, 24-pin printers gradually replaced 9-pin printers. 24-pin printers accomplished a dot-density of 360x360 dpi, a business amount aimed at abeyant buyers of aggressive ink-jet and laser-printers. 24-pin NLQ fonts about acclimated a dot-density of 360x180, the accomplished acceptable with single-pass printing. Multipass NLQ was abandoned, as best manufacturers acquainted the bordering affection advance did not absolve the tradeoff in speed. Best 24-pin printers offered 2 or added NLQ typefaces, but the acceleration of WYSIWYGcomputer application and GUI environments such as Microsoft Windows concluded the account of NLQ

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