Isixazululo, ukuskena, kanye nosayizi wegrafu yisihloko esikhulu futhi esivame ukudideka, ngisho nakwabenzi abakwaziyo. Kulabo abasha bokushicilela ideskithophu , kungaba okumangalisayo. Ngaphambi kokwesaba lapho ucabanga ngalokho ongasazi mayelana nokuxazulula, gxila kulokho okwaziyo futhi okuyisisekelo, okulula ukuwaqonda amaqiniso.
Iyini Isinqumo?
Njengoba lisetshenziselwa ukushicilela ideskithophu nokuklama, isinqumo sisho amachashazi eyinki noma amaphikseli e-electronic akha isithombe uma ephrintiwe ephepheni noma ekhonjisiwe esikrinini. Igama elithi DPI (amachashazi ngamasentimitha) cishe igama elijwayelekile uma uthenge noma wasebenzisa iphrinta, isithwebuli, noma ikhamera yedijithali. I-DPI yisilinganiso esisodwa sokuxazulula. Isetshenziswe kahle, i-DPI ibhekisela ekuxazululeni kwiphrinta .
Amachashazi, Amaphikseli noma Okunye Okunye?
Ezinye iziqalo ozothola zona ezibhekisela kwisisombululo yi- PPI ( amaphikseli ngamasentimitha ngamabili ), ama- SPI (amasampula nge-intshi ngayinye), ne- LPI (imigqa ngamasentimitha ngalinye). Kunezinto ezimbili ezibalulekile okumelwe uzikhumbule ngalezi zinqubomgomo:
- Ithemu ngayinye ibhekisela kuhlobo oluhlukile noma isilinganiso sesinqumo.
- Amaphesenti angu-50 noma ngaphezulu isikhathi ohlangabezana nazo ngalezi zincumo, zizosetshenziswa ngokungalungile, ngisho nangaphakathi kokushicilelwa kwideskithophu yakho noma isofthiwe yehluzo.
Ngokuhamba kwesikhathi, uzofunda ukuthi unquma kanjani kusuka kumongo ukuthi yisiphi isinqumo sokusebenza esisebenza. Kulesi sihloko, sizovele sibheke ekuxazululweni njengamaqabunga ukugcina izinto zilula. (Nokho, amachashazi kanye ne-DPI akuwona amagama afanele kunoma yini enye ngaphandle kokushicilelwa kwiphrinta. Ivele ijwayele futhi ilula.)
Zingaki Amachashazi?
- Kungakhathaliseki ukuthi uyanyatheliswa ephepheni noma uboniswe esikrinini sakho sekhompyutheni, isithombe sakhiwa amachashazi amancane amancane.
- Kunamachashazi ombala futhi kukhona amachashazi amnyama. Ekunyathelweni okumnyama nokumhlophe, ubukhulu nokuma kwamachashazi amnyama nokuthi kushicilelwe kangakanani noma kude kangakanani kubhala ukukhishwa kwamathunzi wegrey.
- Amachashazi amancane asetshenziselwa (kuze kufinyelele iphuzu) acacise isithombe.
- Amachashazi amaningi esithombeni, amakhulu nakakhulu wefayili lesithombe.
- Isixazululo silinganiswa nenombolo yamachashazi endaweni engama-intshi enezingqimba noma eziqondile.
- Uhlobo ngalunye lwedivaysi yokubonisa ( iskena , ikhamera yedijithali , iphrinta , umqapha wekhompyutheni ) inenani elikhulu lamachashazi lingabamba futhi libonise kungakhathaliseki ukuthi amachashazi asesithombeni.
Izibonelo zeSombululo
Umshini we-laser we-600 DPI angaphrinta kuze kufinyelele kumachashazi angu-600 olwazi lesithombe ngo-intshi. Ukuqapha ikhompyutha kungabonisa kuphela amachashazi angu-96 (ama-Windows) noma ama-72 (Mac) wezithombe zesithombe esithombeni.
Uma isithombe sinamachashazi amaningi kunokuba idivayisi yokubonisa ingase isekele, lawo madola alahlekile. Bakhulisa usayizi wefayela kodwa angathuthukisi ukuphrinta noma ukubonisa isithombe. Isixazululo sikhulu kakhulu kuleyo divayisi.
Isithombe esithwetshwe kuzo zombili i-300 DPI naku-600 DPI sizobukeka ngokufanayo kuphrinta ye-300 DPI laser. Amachashazi engeziwe ekwaziswa "aphonswa" yi-printer kodwa isithombe se-600 DPI sizoba nosayizi omkhulu wefayela.
Uma isithombe sinamaqabunga ambalwa kunokuba idivayisi yokubonisa ingase isekele, isithombe kungenzeka ukuthi asicaci noma sibukhali. Izithombe ku-Web ngokuvamile ziyi-96 noma i-72 DPI ngoba lokho kuyisinqumo sabaningi bama-computer. Uma uprinta isithombe se-72 se-DPI kumprinta we-600 DPI, ngeke ngokuvamile kubonakale kuhle njengoba kuyenziwa ekuqapha ikhompyutha. Iphrinta ayinawo amachashazi anele yolwazi ukudala isithombe esicacile, esibukhali. (Kodwa-ke, amaphrinta ekhaya ase-today's inkjet enza umsebenzi omuhle kakhulu wokwenza izithombe ezincane zokuxazulula izithombe zibukeka kahle kakhulu isikhathi.)
Xhuma Amachashazi Wezinqumo
Uma usulungele, cwaninga ngokujulile izimfihlakalo zokuxazulula lapho ungafunda khona isinqumo segama lesinqumo kanye nobuhlobo phakathi kwe-DPI, i-PPI, i-SPI ne-LPI njengezinyathelo zokuxazulula. Ungase futhi ufunde kabanzi mayelana nokunyathelisa kwe-halftone , okuhlobene nesihloko sesinqumo.