Dab tsi yog cov txheej txheem los tiv thaiv kev tawm tsam rau album luam ntawv

Dab tsi yog cov txheej txheem los tiv thaiv kev tawm tsam rau album luam ntawv

Raws li kev lag luam khoom lag luam thiab cov duab sawv cev ntawm cov lag luam, daim ntawv qhia yuav tsum ua kom cov nkauj zoo. Qee cov lag luam loj kuj siv cov thev naus laus zis tawm tsam lawv cov album los tiv thaiv lwm tus qhauj lossis cov neeg uas nyiag lawv ntawm yuav. Muaj ntau ntau yam ntawm cov txheej txheem tiv thaiv kev tawm tsam rau album luam ntawv, qee cov tshuaj tiv thaiv kev tawm tsam ntawm daim ntawv, thiab qee qhov siv tshuaj tiv thaiv tshuab hauv kev luam ntawv thev naus laus zis. Cov txheej txheem los tiv thaiv kev tawm tsam ntawm album luam ntawv yog taw qhia rau koj rau koj qhov siv thiab kev kawm. Ua ntej, cov ntawv los tiv thaiv cov ntawv yog cov ntawv sau ua ke, tuaj yeem siv cov ntawv tshwj xeeb, tuaj yeem siv cov ntaub ntawv tshwj xeeb, tsuas yog tiv thaiv lub teeb tshwj xeeb, tsuas yog pom muaj zog lub teeb tuaj yeem pom, Tau raug lees paub los ntawm cov kws tshaj lij tawm tsam neeg muaj kev tawm tsam thoob ntiaj teb, feem ntau ntawm lub teb chaws cov ntaub ntawv tseem ceeb, cov duab tseem ceeb hauv ntiaj teb no tseem luam tawm ntawm daim ntawv watermark. Watermar tau tau siv dav hauv lwm cov ntawv pib ntxiv rau cov ntawv nyiaj. Muaj ntau hom dej hauv txoj haujlwm ntawm daim ntawv: tsau, tsis-tsis ncaj thiab ib nrab. Nws sib xyaw ua ke cov txheej txheem xws li kev tsim qauv, molding, net-ua, thiab nws feem ntau ua rau cov neeg siv tsis muaj kev pab cuam. Txheeb xyuas cov dej dej yog tseem yog ib txoj hauv kev zoo tshaj kom paub qhov txawv ntawm qhov cuav. 2. Kev Nyab Xeeb Xov Cov Xov Kev Nyab Xeeb yog hais txog qhov kub xaim lossis cov hlau yas hauv nruab nrab ntawm daim ntawv thaum lub sijhawm ua haujlwm papermaking. Cov xov xwm kev nyab xeeb tiv thaiv tshwj xeeb kub, tam sim no cov kab kev nyab xeeb, thiab cov xim liab thiab xiav. Daim ntawv tsis yog qhov zoo, thiab muaj fluorescent nyob rau hauv ulaviolet iradiation. Muaj ob hom liab thiab xiav filaments filaments thiab cov dots xim rau ntawm daim ntawv: qhov chaw ua haujlwm thiab tsis muaj zog. 4. Anti-luam tawm daim ntawv tom qab luam tawm, cov lus "luam" thiab "Tsis raug" yuav tshwm sim tiv thaiv xim luam ntawm cov ntaub ntawv tseem ceeb. Lwm hom ntawm tag nrho cov ntaub ntawv tiv thaiv los ntawm cov ntawv xiav lossis xim av-liab, thiab cov duab ntawm daim ntawv tsuas yog pom los ntawm lub teeb, thiab nws cov ntawv luam yog suab dub. 5. Cov ntawv tsis yog fluorescent tshwj xeeb feem ntau, ntawv yog fluorescent nyob rau hauv ultraviolet iradiation. Yog li, banknote luam ntawv ntawv thiab qee cov kev nyab xeeb lossis cov nuj nqis yog siv rau cov ntawv tshwj xeeb fluorescent los tiv thaiv. Piv txwv li, cov ntawv ntawm banknotes, phau ntawv hla tebchaws thiab qee daim pib ntawm ntau cov teb chaws tsis tau fluorescent graphics nrog cov cim fluorescent. 2. Album luam ntawv tshuab xws li ntau txoj hlua hlua ua luam, kuj tau muab cov ntawv luam tawm, feem ntau siv ntau yam hues ntawm number case ntawm cov number case ntawm cov number case. Nyob rau hauv lub tandem kev txiav txim ntawm lub number case ntawm lub number case, tus number cas ntawm cov ntu uas nyob ib sab yog sib xyaw thiab tom qab ntawd hloov mus rau lub tshuab luam ntawv. Nrog cov txheej txheem luam ntawv no, ntau cov xim tuaj yeem luam tawm ib zaug nrog kev hloov pauv ntawm qhov nruab nrab. Txij li nws yog qhov nyuaj kom pom qhov kev ncua deb ntawm tus mem kua uas Graphe los ntawm cov luam ntawv, nws tseem tuaj yeem ua tau ib lub luag haujlwm ntawm kev tawm tsam kev tawm tsam. Yog tias tus txheej txheem no siv hauv thaj chaw luam ntawv loj, nws cov txiaj ntsig tawm tsam yuav muaj txiaj ntsig ntau dua. Qhov saum toj no tau qhia koj txog cov txheej txheem los tiv thaiv kev tawm ntawm album luam ntawv, koj puas tau kawm qee cov ntawv nyeem? Yog tias koj muaj lwm lo lus nug txog kev luam ntawv, thov mus saib cov kev paub no channel.