Kev soj ntsuam hluav taws xob hauv tshuab hluav taws xob thiab lus teb
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Lus Nug: Cov kev sib txawv, qhov zoo thiab qhov tsis zoo ntawm AM thiab FM yog dab tsi?
Teb: Cov teev yog qhov kev yooj yim rau kev tsim cov xim tas li laus. Qhov loj daig yog lub luag hauj lwm rau lub plhaub ntim ntawm lub plhaub taum plawv, lub suab hloov qib siab thiab lub koom haum xim ntawm cov duab thaij duab. Tam sim no, nws muaj ob hom kev ntsuam xyuas rau cov xim thawj daim qauv, qhov kev ntsuam xyuas ntawm amplitude modulation (AM) thiab kev ntsuam xyuas ntau zaus (FM). AM filtering yog ib qho kev ntsuam xyuas periodic, uas yog ib qho txheej txheem hauv plaub phau ntawv; FM screening Nws yog ib qho kev soj ntsuam tsis yog periodic period, uas yog ib qho tshiab xim-fidelity xim luam technology npaj los ntawm Agfa thiab Lennon-Hair nyob rau hauv 1993.
1. Kev ntsuam xyuas AM yog ib txoj kev ntsuam xyuas uas tso cai rau kev hloov ntawm cov qauv tseem tuaj yeem tsim ib qho kev txiav txim siab ntawm cov plaub fab me me ntawm cov yeeb yaj kiab los ntawm kev txheeb xyuas. Txhua lub xwmfab me yog nruab nrab ntawm ib lub hauv paus, hu ua mesh, nrog ib lub laser-raug dot hauv txhua lub mesh, muab faib rau hauv nruab nrab ntawm kab sib chaws. Vim tias cov square me me me heev, qhov muag tib neeg tsis paub qhov loj ntawm qhov teev nyob rau hauv lub mesh nyob rau hauv ib co kab ntawm pom, thiab tsuas muaj peev xwm pom qhov tob ntawm lub suab qib. AM kev ntsuam xyuas yog kev siv cov kev hloov hauv cheeb tsam ntawm cov dots hauv txhua lub xwmfab me me los sawv cev rau thawj theem.
2. FM qhov ntsiab lus tseem hu ua random network ntsiab lus (diamond dots). Laser cov ntsiab lus nrog ib chav pixel me me ntawm 7 ~ 35μm yog muab faib rau hauv cheeb tsam ib chav. Qhov loj ntawm lub ntsiab lus ntawm network yog tib yam, thiab qhov faib ntawm cov dots yog txawv. Los sawv cev rau cov duab ntxoov ntxoo ntawm daim duab, lub me me cov dots, cov yeeb yuj ntau thiab cov xim yuav tsum tau theej. Nws qhov zoo dua yog vim tias cov dots random faib, yuav tsis muaj moiré tom qab overprinting. High-txhais, tsis ua haujlwm, tsis muaj peev xwm siv tau cov cuab yeej siv FM los tawm cov duab zoo. Kev ua kom muaj xim ntau xim thiab ua kom zoo dua qub.
3. Qhov sib txawv ntawm ob qho screening technologies: cov cim AM filtering tsis suav muaj pes tsawg tus vijtsam, lub vijtsam sab xis, lub suab nrov, thiab cov qauv duab. FM kuaj muaj tsuas yog ib qho parameter, namely qhov loj me me. FM kuaj tsis tsim tawm. Qhov kev nyuaj ntawm AM kev kuaj xyuas yog ncaj qha ntsig txog lub cev, tshwjxeeb cov qauv ntaub ntawv, cov qauv ntoo, cov duab zoo nkauj, suav duab, thiab lwm yam. Lub moiré yog qhov khoom ntawm cov txheej txheem ntawm cov txheej txheem, thaum kuaj qhov FM tsis muaj cov xov tooj ntawm cov vijtsam thiab lub vijtsam sab xis. Qhov faib ntawm cov dots random thiab random. Muaj ntau daim phiaj ntau tshaj saud ua ke, txawm tias qhov teeb meem luam tawm, cov ntaub qhwv ntawv, thiab lwm yam tsis tau muab luam tawm. Yuav muaj kev txhawj xeeb. Raws li kev pom tseeb, txawm tias qhov kev ntsuam xyuas tshuab AM zoo, nws tsuas yog zam tau lub dav hlau loj, thiab cov cim me me (daus, hnub qub, sawv) tsis tuaj yeem raug tshem tawm. Lub lwj luam los ntawm amplitude tes taws los piav yog lub ntsiab ntawm lub teeb diffraction, uas tsis tau zam. Cov cim no yog lub hauv paus ua rau ntawm daim duab roughness. Qhov kev ntsuam xyuas FM tsis muaj cov cim, uas ua rau cov duab ntau dua thiab meej, nrog cov nyhuv ntawm cov nyom thiab cov nplua nuj kawg.
4. Theem ntawm FM network yog ib qho kev tsim tawm. Txij li tsis muaj ib qho teeb meem, qhov kev dhia dhia hauv txoj kab uas nyob ib sab yuav tsis tshwm sim thaum theem nce, txoj kev hloov cov txheej txheem ntawm kev hloov yog ib qho kev sib raug zoo, theem zoo nkauj, qhov teeb meem tshwm sim yog ze rau qhov qub, thiab lub siab cov nyhuv yog tiav, uas zoo rau cov xim luam yeeb. . Thaum luam tawm ntawm 5 mus rau 7 xim, AM kev kuaj xyuas yuav ua rau kom tsis yooj yim ntawm kev kho ntawm txoj kev ntsuam xyuas. Kev siv lub tshuab kuaj xyuas FM muaj kev tsim kho cov qauv ntawm lub suab paj nruag, muaj ntau yam xim rau cov xim luam yeeb, tau ntsib qee cov kev cai tshwj xeeb, nthuav cov xim ntawm ntau hom luam, thiab ua tiav cov kev cai luam tawm siab.
Lus Nug: Kuv puas siv tau txoj kev ntsuam xyuas FM rau kev luam ntawv?
A: Tam sim no, tseem muaj qee cov teeb meem thaum siv cov kev ntsuam xyuas FM rau kev luam ntawv. Lub tshuab kuaj fais fab kuaj pom lub tshuab kuaj FM los ntawm lub computer qhov muaj peev xwm ua tau. Txawm li cas los xij, hauv cov ntawv siv, tseem muaj qee cov teeb meem hauv kev tshuaj xyuas, kev tshuaj xyuas cov khoom siv thiab cov khoom siv thiab lwm yam yees.
1. Qhov kev kuaj xyuas FM yog ib qho me me, 7 ~ 35μm, thiab 20μm dot tsuas yog sib npaug li 2% ntawm 100 kab ntawv los yog 5% ntawm 200 phau ntawv. Vim hais tias cov kev tshaj tawm me me, nws yooj yim rau cov me nyuam ntawm cov ntawv xov xwm, thiab qhov poob lawm.
2. Qhov sib ntxiv ntawm qhov sib ntxiv ntawm qhov muaj nuj nqi muaj qhov nce siab siab, thiab tus nqi FM qhov taw tes yog qhov nce ntawm 20% mus rau 40% siab tshaj ntawm cov khoom siv network.
3. Muaj qee cov teeb meem hauv kev kho dua thiab luam. Qhov loj ntawm cov yeeb yaj kiab tsis zoo nkauj yuav kho tau los ntawm kev kho tshuaj xws li sab nrauv thiab thinning, thaum lub sij hawm uas tsis muaj qhov tsis zoo ntawm qhov tsis zoo, thiab cov ntawv luam ntawm cov ntawv luam tawm me me yuav tsum tau theej thiab xa tawm tau yooj yim.
4. Tam sim no, cov xov tooj ntawm cov vijtsam hauv npo luam tawm yog 60-80 kab / nti, thiab lub suab nrov ntawm lub npo yog 10% ~ 85%. Cov txheej txheem luam ntawv yog tus txais, thiab cov khoom me me tsis yooj yim luam tawm.
5. Lub vijtsam luam tawm kev kuaj xyuas FM tsis muaj qis, thiab cov ntawv luam tawm tsis ruaj khov.
FM kev ntsuam xyuas tshuab yog nyob rau theem tsim muaj cov kev sim thiab kev siv. Piv txwv li, ob qhov sib txawv ntawm FM tes hauj lwm sib txawv los yog kev sib txuas ntawm AM thiab FM ntsiab lus tau maj mam tau mus thov plaub qhov kev luam ntawv loj. Kev tshwm sim ntawm kev ntsuam xyuas lub tshuab fais fab FM tau zoo dua qub thiab txhawb kev nthuav tawm xim tshiab. Muaj qee lub tuam txhab luam ntawv siv flexographic luam ntawv tau siv FM screening technology. Tam sim no, nws tsis yooj yim siv FM kuaj tshuab hauv kev luam tawm ntawm cov khoom siv khoom siv los kuaj xyuas tshuab. Yog li ntawd, nyob rau hauv qhov sib txuas hauv cov xim network thiab luam tawm, ntxiv rau siv FM zaj duab xis los kos thiab luam, FM kuaj tsis tuaj yeem hloov cov tshuaj AM lub tshuab kuaj kab kos.