Uhlolojikelele lwesithwebuli sebhakhodi 2021

Uhlolojikelele lwesithwebuli sebhakhodi 2021

Lapho sithinta isibhamu sokuskena ikhodi yebha, sivamise ukuhlangana namagama amaningi obuchwepheshe anzima: njengokulungiswa kokubona (i-optical resolution), ukulungiswa okuphezulu (ukulungiswa okuphezulu), ukulungiswa kombala (ukujula kombala), imodi yokuskena, imodi yesixhumi esibonakalayo (isixhumi esibonakalayo sokuxhumana), njll. Manje ake sethule ulwazi oluyisisekelo lwalezi zibhamu zokuskena ikhodi yebha, ukuze sazi okwengeziwe ngezibhamu zokuskena ikhodi yebha, ezingasetshenziswa futhi njengereferensi lapho sithenga izibhamu zokuskena ibhakhodi. Eqinisweni, isithwebuli sekhodi yebha, isibhamu sokuskena ikhodi yebha kanye nesifundi sekhodi yebha yinto efanayo, kodwa zisetshenziselwa amagama ahlukene. Uhlobo lwesithwebuli sebhakhodi:

Ziningi izinhlobo zezikena zekhodi yebha, okuhlanganisa nalokhu okulandelayo:

Iskena sebhakhodi ephathwayo. Iskena sekhodi yebha ephathwa ngesandla siwumkhiqizo owakhiwe ubuchwepheshe obathulwa ngo-1987. Ukwakheka kwaso kufana kakhulu nesithwebuli sekhodi yebha esetshenziswa umshini wemali esuphamakethe esandleni sakhe. Iningi lezikena zekhodi yebha eziphathwayo zamukela ubuchwepheshe be-CIS, obunokulungiswa kwe-optical okungu-200 DPI. Kunezinhlobo eziningi zombala omnyama nomhlophe, ompunga nombala, lapho uhlobo lombala ngokuvamile lunombala webhithi elingu-18. Eminye imikhiqizo esezingeni eliphezulu ibuye isebenzise i-CCD njengesisetshenziswa sezithombe, esingabona umbala wangempela kancane kanye nomthelela omuhle wokuskena.

Iskena sekhodi yebha yerola encane. Lona umkhiqizo omaphakathi wesithwebuli sekhodi yebha ephathwa ngesandla kanye nesithwebuli sekhodi yedeskithophu (umkhiqizo omusha uvele eminyakeni yamuva nje ngoba ungokwakhelwe ngaphakathi kwamandla kanye nevolumu encane, ebizwa nge-notebook bar code scanner). Iningi lalo mkhiqizo lithatha ubuchwepheshe be-CIS, obunokulungiswa kwe-optical okungu-300dpi, umbala nokumpunga, futhi imodeli yombala ngokuvamile inombala wamabhithi angu-24. Ezinye nezikena ezimbalwa zekhodi yebha ye-roller zisebenzisa ubuchwepheshe be-CCD, futhi umphumela wokuskena ngokusobala ungcono kunalowo wemikhiqizo yobuchwepheshe be-CIS. Kodwa-ke, ngenxa yezingqinamba zesakhiwo, umthamo uvame ukuba mkhulu kakhulu kunemikhiqizo yobuchwepheshe be-CIS. Idizayini yohlobo lwamarola amancane owokulungisa ilensi yesithwebuli sekhodi yebha, bese uhambisa into ukuthi iskenwe ukuze iskenwe ngelensi. Ngesikhathi sokusebenza, njengephrinta, into ezoskenwa kumele idlule emshinini bese ithunyelwa. Ngakho-ke, into eskeniwe ayikwazi ukujiya kakhulu. Inzuzo enkulu yalesi sithwebuli sekhodi yebha ukuthi sincane kakhulu, kodwa sinemikhawulo eminingi esetshenziswayo. Isibonelo, ingaskena kuphela iphepha elincanyana, futhi ububanzi abukwazi ukudlula usayizi wesithwebuli sekhodi yebha.

Iskena sekhodi yebha ye-Platform. Ibizwa nangokuthi isithwebuli sekhodi yebha eyisicaba kanye nesithwebuli sekhodi yedeskithophu. Njengamanje, izikena eziningi zekhodi yebha emakethe zingezaseskena sekhodi yebha, okuyisona esijwayelekile manje. Ukulungiswa kokubonwa kwalolu hlobo lwesithwebuli sekhodi yebha kuphakathi kuka-300dpi no-8000dpi, inani lamabhithi ombala lisuka ku-24 ukuya ku-48, futhi ifomethi yokuskena ngokuvamile i-A4 noma i-A3. Inzuzo yohlobo lwephaneli eyisicaba ukuthi, njengokusebenzisa i-copyer, inqobo nje uma ikhava engenhla yesithwebuli sekhodi yebha ivuliwe, kungakhathaliseki ukuthi izincwadi, amaphephandaba, omagazini kanye nezithombe ezingezinhle zingafakwa ukuze ziskenwe, okuyinto elula kakhulu. , futhi umphumela wokuskena futhi ungcono kakhulu kuzo zonke izinhlobo ezivamile zezikena zekhodi yebha.

Ezinye zihlanganisa isithwebuli sekhodi ye-noodle enkulu, isithwebuli sekhodi yebha yepeni, isithwebuli sekhodi yebha enegethivu yokuskena kwefomethi enkulu (qaphela ukuthi akuyona ibha eyisicaba. isithwebuli sekhodi esinokuskena okusobala, umphumela ungcono kakhulu, futhi intengo iyabiza ngempela), isithwebuli sekhodi yebha ngokomzimba (akusona isithwebuli sekhodi yebha eyisicaba esinekhono lokuskena ngokomzimba, elifana kancane nekhamera yedijithali), Lapho futhi kukhona izikena eziningi zekhodi ye-roller esetshenziswa kakhulu emkhakheni wokuphrinta nokuhlela.