Gray level kyerɛ nozzle no betumi apete ne kɛse ahorow (diameter, volume) ink droplets sɛnea ehia wɔ nozzle koro no ara .
Wɔakyekyɛ nozzle no mu a ɛyɛ fitaa no mu 4-8, saa nkyekyɛmu yi gyina hɔ ma ink nsuo a ɛtɔ kɛseɛ no mu nneɛma, 4 ne sɛ: nsuo a ɛtɔ gu fam akɛseɛ anan, 8 ne sɛ: nsuo a ɛtɔ gu nsuo mu akɛseɛ no yɛ nsuo nketenkete nketewa awotwe.
Sɛnea ɛyɛ adwuma: Wɔ printhead no nozzle koro no ara mu, ɛdenam piezoelectric nipadua no wosow so, sɛ wɔde bɛpete ink nsu nketenkete biako anaa nea ɛboro saa wɔ bere tiaa bi mu so no, wobetumi aboaboa nsu nketenkete ano ayɛ no ink nsu nketenkete.
Sɛ nhwɛso no: 14pl nozzle, sɛ wobɛtintim a ɛwɔ 8 levels grey, ɛne sɛ ɛyɛ 14pl droplets awotwe awotwe, ink droplets no kɛse ne 112pl ink droplets no yɛ pɛ, na 4 yɛ pɛ 4 *14=56pl ink droplets{7}}
Sɛ woretintim ade bi a ne kɔla yɛ tuntum na ɛyɛ hare a, grey adwuma no ho hia yiye, nsɛm a edidi so yi ka [No Gray Level Function], [a grey level function], [Gray Level + Drop variable] wɔ nsakrae no a wɔde di dwuma no mu bere a wɔretintim.
No grey level function, ink droplets a nozzle no petepete so no nyɛ droplets nketenkete, te sɛ 14pl nozzle, ɛyɛ ink droplets no kɛse betumi ayɛ 14pl. nkutoo ɛyɛ nea wobetumi ayɛ ara ne sɛ wɔbɛtew pixel density (DPI) a wɔatintim no so bere a wɔretintim mmeae a ɛyɛ hare{3}}
Sɛ wode grayscale dwumadie di dwuma a, wobɛtumi ayi nsuo nketenkete afiri mu de akyerɛ kɔla a ɛyɛ hann, na nhwɛsoɔ no mu duru (DPI) nsakra.
