Mar 15, 2019 Tso lus

Laser Gravure Engraving Technology

Laser gravure engraving technology

Kev siv cov lasers raws li kev ua tau zoo rau cov phaj ua yog lub hom phiaj ntev ntawm kev pib ua ntej xovxwm thiab platemaking. Raws li lub siab, lub cuab yeej sau ntaub ntawv pov thawj, cov tshuab laser tshuab ntaus ntawv tau ua lub luag haujlwm tseem ceeb hauv offset printing thiab gravure printing txij thaum xyoo 1970. Lub hauv paus ntawm computer graphic cov ntaub ntawv ua, kev siv cov duab laser rau cov duab thiab cov zis tawm zaj duab xis thiab offset luam ntawv phaj yog qhov feem ntau thiab feem ntau pheej hmoo offset printing. Qhov sibtham hu ua "CTFilm", "CTPlate" muaj xws li muaj cov ntawv phaj laser.

Nws yog zoo paub tias cov neeg kho tshuab electromagnetic gravure hauv tshuab engraving yog invented hauv 1962 los ntawm lub tuam txhab German HellGmbH. Qhov no yog ze heev rau qhov tsim muaj lub laser. Qhov tseeb, lub tuam txhab cov kws kho tau sim siv cov lasers rau kev kos cov tooj liab-plated thooj voos kheej kheej thaum lub sijhawm. Txawm li cas los xij, vim muaj kev cuam tshuam zoo txog tooj liab, lawv tig mus rau high-energy electron beam engraving thiab succeeded.

Lub pob zeb loj ntawm lub pob zeb loj pib pib thaum 1977, thaum Crosfield Electronics ntawm lub tebchaws United Kingdom siv ib lub laser los kos ib lub xovtooj ntawm ib lub voj voos kheej kheej nrog lub polymer cob txhoov kom ua ib lub nrig gravure. Txawm hais tias lub system tsis tau muab coj los siv rau vim li cas xws li kev ruaj ntseg zoo, thiab lwm yam., Raws li kev siv tshuab kev tshawb fawb thiab kev tshawb nrhiav, nws tau taw qhia tias laser gravure printing phaj tuaj yeem tsim tau.

Ntawm Drupa2000, ib qho kev tshwm sim luam tawm nyob rau hauv Düsseldorf, lub teb chaws Yelemees hauv lub Tsib Hlis 2000, nws tau pom tias cov tshuab laser suab paj nruag tau nkag mus ua ib theem. Ntxiv nrog rau cov tshuab luam ntawv CTPlate, ntau lub lag luam tau pib Cov ntawv xov xwm gravure thiab cov qauv ntawm lub laser phaj ua cuab yeej ua ib lub ntsiab ntawm CTC (Khoos phib Tawj Lub Kheej).

Raws li deb ntawm cov hom mob gravure muaj kev txhawj xeeb, muaj ntau hom plaub hom, namely: qhov txawv ntawm cheeb tsam hauv hlwb, concave qhov tob hlwb, qhov txawv ntawm thaj tsam thiab qhov tob siab, thiab cov kabmob sib txawv. Nyob rau tam sim no lub xeev ntawm daim duab, laser engraving ntawm cov plaub lub hlwb tau ua tiav.

1. Qhov sib txawv ntawm thaj chaw ntawm tes

Raws li lub npe implies, hom ntawm tes reproduces gradation theem ntawm daim duab xwb los ntawm hloov nws qhib cheeb tsam. Lub cheeb tsam ntawm tes ntawm qhov sib sib zog nqus xim yog loj, thaum lub cheeb tsam ntawm lub cell nyob rau hauv qhov cim ntiav yog me me, thiab tob ntawm cell yog unchanged. Hauv no regard, nws zoo ib yam li cov qauv ntawm kev luam duab ntawm offset dots. Yog li, hom intaglio no kuj hu ua "dot gravure".

Nws yuav tsum raug sau tseg tias txawm hais tias lub hauv paus ntsiab lus ntawm cov duab tone yog zoo li offset luam ntawv, cov qauv ntawm lub xov tooj ntawm tes tsis tau sib cais los ntawm kev yooj yim kev cai ntawm lub pob zeb gravure. Qhov no yog: lub phab ntsa yuav tsum tau tsim thiab khaws cia, tsis yog hauv lub phaj. Muaj ib qhov loj ntawm phab ntsa tsis-net. Yog li ntawd, los ntawm kab zauv ntawm lub xov tooj ntawm tes, nws tsis yog sib npaug rau cov lus qhia meej.

2. Concave tob kuj nce mesh

Qhov no yog feem ntau ntawm cov pob zeb loj tshaj plaws, feem ntau hu ua "gravure classic" los yog "traditional gravure." Hom kab xov ntawm lub xov tooj no tsuas yog hloov cov qib kev hloov ntawm daim duab los hloov qhov tob ntawm lub xov tooj ntawm tes. Cov xim ntawm lub hlwb yog ntxaum nyob rau hauv qhov tob ntawm cov xim, thaum lub hlwb nyob rau hauv cov xim ntiav yuav tsum cog thiab cheeb tsam ntawm lub hlwb yog unchanged. Txij li ntawm lub cheeb tsam ntawm tes yog tib yam, lub thickness ntawm phab ntsa lub mesh yog sib npaug.

3. Qhov nruab nrab ntawm qhov chaw mesh rau thaj tsam ob qho tib si thiab qhov tob hauv qhov tob

Xws li ib lub xov tooj feem ntau pom nyob rau hauv lub cylinder engraved los ntawm ib tug neeg kho tshuab electromagnetic gravure engraving tshuab, uas yog feem ntau siv cell hom rau non-laser electroglossogravure. Cov yam ntxwv ntawm lub hlwb yog: qhov qhib qhov ntawm lub xov tooj ntawm qhov tob ntawm qhov xim thiab qhov tob ntawm lub recess yog loj, thiab qhov qhib cheeb tsam ntawm lub cell thiab qhov tob ntawm lub recess yog me me nyob rau hauv lub ntiav xim ntawm lub ntsej muag , thiab nws yog pom tseeb tias lub thickness ntawm mesh phab ntsa yog tsis ncaj.

4. FM network

Ua raws li txoj cai ntawm kev ntsuam xyuas FM mus rau lub gravure, koj tuaj yeem tsim ib qho FM groove gravure.


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