Mene ne carbon takarda

Burokrasi samo asali dubban shekaru da suka wuce. Da zarar lokacin archeological tono a Misira da aka samu a cikin da yawa lãka Allunan tare da wannan rubutu. Rewriting yayin da tsunduma a rubuce-rubuce bayi.

Domin da farko lokacin da fasahar a kan wanda ya fara samar da kwafin takardar, an jadadda mallaka Oktoba 7, 1806 a Birtaniya. A takardar da aka mai huldar, impregnated da tawada. Da sabuwar dabara ne sananne "carbon takarda" Ralph Wedgwood nasa.

A cikin 1820s, da takarda kwafin a kan tushen da toka ta fara samar da on masana'antu sikelin. Ganiya da ta shahararsa zo a cikin 70 na, a lokacin da suka fara bayyana en sun mayar typewriters. A shafi fara kara mastic cewa zai kawar da shortcomings na baya versions - duk gurbatawa, abin da ta shãfe. Kafin zuwan zamani kwashe kayan aiki (copier, fax) carbon takarda ya Popular. Yau da shi ba haka ba ne m, kuma ake amfani da yafi a cikin tufafi kasuwanci.

Carbon takarda ne low yawa. A gefe daya shi ya sa a canza launi Layer, wanda taimaka don samun rubuce, bugu ko jawo mahara kofe. A takardar da aka aza tsakanin al'ada takarda canza launi Layer saukar. Lokacin rubuta a kan takardar da aka sanya a saman, saboda da latsa rike canza launi barbashi canjawa wuri uwa da takardar dasa kasa wata takarda.

Tare da wannan takarda, za ka iya samu kofe na daban-daban takardun. Yau bayar na musamman haske-m kayan, akwai kuma wani bambancin daga gare ta, tsara don inganta bambanci taswirar.

Har ila yau, yanzu akwai phototechnical reflex kwafin takardar gaskensu daga mashaya (guda da biyu) a lamba kwashe. Akwai aka kuma fotostatnye haske-m kayan (korau, m) ya samu kofe daga mashaya da rabin sautin gaskensu photocopying. Wani view - fotokalka, wanda ake amfani da yin kofe na gaskensu bar yin amfani da lamba bugu da tsinkaya. Kuma amfani da thermoset carbon takarda reflex kwafi a thermal (infrared) haskoki , kuma thermally canja wurin da image a kan tudu takarda. Photosemiconductor kwashe kayan ana buga a farfajiya na bakin ciki semiconductor photoactive Layer bisa tutiya oxide.

Ofishin kwafin takardar, wadda ba za ka iya saya a da yawa Stores, yana da high bambanci images. Lokaci yin kofe iya bukatar 'yan seconds zuwa minti daya ko fiye. A cikin aiki fasahar (kayyade, nuni, da dai sauransu) Kuma tsawon lokaci na ajiya na kofe kamar yadda akwai daban-daban iri iri na takarda.

Sau da yawa amfani domin yin kofe kuma bayyana takarda, ba a bi da matsayin idan kontaktno- ko matrix-alama Hanyar na kwashe, kazalika da haifuwa na asali, ta hanyar biya diyya bugu damar.