Carbonless carbon ntawv feem ntau yog siv rau cov ntaub ntawv. Cov ntawv xa nyiaj uas twb muaj lawm, cov ntawv cog lus, cov ntawv cog lus thiab lwm cov ntaub ntawv raug cai tau siv tag nrho hauv cov ntawv tsis muaj cov ntawv luam. Cov ntaub ntawv tsoos tsuas yog daim ntawv dawb xwb, yog li koj yuav tsum tau ntxiv ib txheej txheej hauv qab cov ntaub ntawv. Carbonless carbon ntawv, ntawm qhov tod tes, yog khi nrog cov ntawv tshwj xeeb.
Raws li qhov peb tau txais daim ntawv txais carbon tsis muaj carbon muaj kev txhawj xeeb, nws tuaj yeem muab faib ua ntawv sab saud, ntawv nruab nrab, thiab ntawv qis. Sab nraum qab ntawm daim ntawv yog coated nrog microcapsules uas muaj zog-sensitive pigment roj; Cov ntawv nruab nrab, tseem hu ua daim ntawv zoo thiab tsis zoo ob-coated (code CFB, piv txwv li, Coated pem hauv ntej thiab nraub qaum), pem hauv ntej ntawm daim ntawv yog coated nrog tus neeg sawv cev chromogenic, thiab sab nraub qaum yog coated nrog microcapsules uas muaj zog-sensitive pigment roj. ; Daim ntawv hauv qab no tseem hu ua daim ntawv npog ntsej muag (code CF, uas yog, Coated Front), thiab daim ntawv tsuas yog coated nrog tus tsim xim. Self-Contained Paper (codenamed SC, ie Self-Contained) yog ib txheej microcapsule uas muaj cov roj pleev xim xim rau sab nraum qab ntawm daim ntawv, thiab lub microcapsule uas muaj tus neeg sawv cev chromogenic thiab quab yuam-sensitive pigment roj rau pem hauv ntej.
Daim ntawv sab sauv thiab sab qis tsis muaj cov ntawv luam, thiab tsuas yog daim ntawv nruab nrab muaj cov ntawv luam. Thaum siv cov ntaub ntawv luam tawm ntawm cov ntawv tsis muaj carbon, ib daim ntawv me me feem ntau muab rau ntawm daim ntawv, kom tsis txhob muaj kev sau ntawv ntau dhau thiab lwm cov ntawv hauv qab tau theej.
Muaj kwv yees li 4 xim ntawm cov ntawv tsis muaj carbon; Plaub xim ntawm dawb / liab / xiav / ntsuab ua lub luag haujlwm hauv kev sib txawv ntawm kev sib koom ua ke.