IN ỐNG ĐỒNG.docx

8/10/2019 IN NG NG.docx

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IN NG NG

In ng ng (Gravure printing) vnguyn l n l phng php in lm, tc l trnkhun in, hnh nh hay chvit (gi l phn tin) c khc lm vo bmt kimlai.

Khi in sc 2 qu trnh: Mc (dng lng) c cp ln bmt khun in, d nhinmc cng strn vo cc chlm ca phn tin, sau mt thit bgi l dao gt(Doctor blade) sgt mc tha ra khi bmt khun in, v khi p in mc trong ccchlm di p lc in struyn sang bmt vt liu.

Khun in ng ng c dng trc kim lai, lm bng thp, bmt c mmt lpng mng, phn tin sc khc ln bmt lp ng ny nhaxt hoc hini hn l dng my khc trc. Sau bmt lp ng li c mmt lp crmmng bo v.

In ng ng c ng dng trong ngnh in bao b mng nha, n cnh baong OMO, Viso, bnh ko Bibica, hay c ph Trung Nguyn... Tt cuc in bng phng php in ng ng.


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Nguyn l in ng ng theo s di y:

Quy trnh in ng ng

Chto khun in ng ngHin nay ngi ta c thchto cc khun in ng ng bng cc

phng php quang ha hoc phng php khc in t. Phngphp quang ho da trn c scc qu trnh nh, qu trnh hol ,qu trnh c hc v in phn.V d: hnh nh c truyn sang khun in bng qu trnh chp nhcn cc phn tin c n su bng qu trnh n mn ha hc. Qutrnh cng nghchto khun in ng ng bng phng php quangha gm cc cng on chnh:


3/22

a. Chto phim dng bn v bnh bnb. Chun bvt liu lm khun inc. Truyn hnh nh sang khun ind. n mn v gia cng khun in

1.

Chto phim dng bn v bnh bnTuc im ca n phm, chto khun in ta c thdng cc bi mukhc nhau ( nh chp, nh vnt) Qu trnh chto dng bn nt v chtrn khng khc g so vi qu trnh chto khun in offset.Vi dng bn tng th( chp tcc nh..) im khc vi offset l khngchp qua tram( khng dng tram cng on ny). Trc h, tcc bnmu tng thnhn c m bn, Sau tm bn ny li cng tc ra dng

bn. Mt im cn lu vic sa cha nhng sai st trc tip trn khun inng ng rt phc tp v kh thc hin theo mun, nn tt cnhng nhc

im vtng thv mi khuyt tt khc cn phi c khc phc ngay tm bn v dng bn . Sau khi c phim dng bn vic tip theo l bnh bncng vic ny cng tng tnh lm vi bnh bn offset. Ty cng nghchbn ( mt qu trnh hay hai qu trnh) c thchring hay nh ring.

2.

Chun bvt liu lm khunV phng php in ng ng cn p dng dao gt mc nn phn ln khunin c chto khng phi bng tm kim loi m l nhng tm thp hnhtr, trn bmt ng thp ny c phmt lp ng. Nhng ng thp( cha

phng) nh thc gi ti nh in cng vi my in v c thsdng

nhiu ln. Khi chto khun in ng thp hnh trc gia cng ktrn mytin v ra sch bi bn. mbng dung dch kim hoc axt, sau phmtlp niken mng( 0.005-0.01mm) bng phng php m. Khi pht yucu kthut ca lp niken, ng thp c chuyn sang phn mng. Lpng c phln bng qu trnh in phn. Trong khi tin hnh in phn,ng thp c quay lin tc v dung dch in phn c khuy lin tc.Trc tin phlp ng vi dy 0.1- 0.15mm,lp o ng cdng to nn cc phn tin v cc phn ttrng. Mc ch ca lp

phng ln bmt thp l a ng knh, ca ng ng ti kch thctheo nh yu cu cn thit. Trc khi phlp o ng ngi ta phlnng trmt lp bc ( Ag) tht mng. Nhlp bc ny, sao khi in xong lpo ng ddng tch khi ng thp ( tch khi lp ng) Bmt lp o ng phi m bo nhn bng, khng xc, khng rn nt.. Mun tyu cu ny khng phi chch n thnh phn dung dch in phn vchin phn c bit, m cn phi mi bng lp o ng bng mt loi


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thuc c bit. Nu ng thp dng khi tin hnh chun bphi ty blpo ng, lm sch lp ng , mbc lp mng, phlp o ng mi vmi bng.

3.

Truyn hnh nh sang khun inc thnhn c nhng phn tin c nngsu khc nhau trong qutrnh n mn, nht thit phi to ra c nhng nt hnh nh cao thp khcnhau. Hnh nh c bit nh vy khng thnhn c bng phng phptruyn trc tip hnh nh tdng bn ( phim) sang bmt ng ng. Nnngi ta phi dng giy pigment: Trc ht truyn hnh nh sang giy

pigment mi truyn tgiy pigment sang bmt ng thp dng lmkhun in.

Trc in (khun in) ng ng

Hnh m phng bmt khun in ng ng c phng ln, cho thy cc lm khc trn bmt trc


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4. n mn v gia cng khun inSau khi hin, phi tin hnh n mn bng dung dch st clorua. Qu trnh n

mn l qu trnh hal rt phc tp . c im ca qu trnh n mn

khun in lm l : qu trnh n mn kim loi xy ra di lp pigment bthnh.

c im ny khc vi in typ gy phc tp cho qu trnh n mn v kh

khn cho vic kim tra. Ngoi ra sau khi n mn th khng thsa khun in

c. Dung dch st clorua, sau khi thm qua lp pigment bt hnh sho

tan ng cc phn tin, su trong khi n mn ng phthuc khng

nhng vo dy ca lp bt hnh, m cn phthuc vo nng v nhit

ca st clorua, thi gian n mn, m v nhit khng kh

V dnu dung dch n mn long schng thm qua lp pigment bt hnh

v n mn ng su hn. bm m truyn chnh xc tng thca bi

mu nhthit phi t c su ca cc phn tin bphn tt nht l

55 -60 micromet su hnnhng phn tin bphn sng t14 n 16 ln.

Sau khi n mn ty blp bo vaxt v lp pigment bt hnh bng xng v

axt clohidiric HCL. Kt qul ta nhn c khun in ng ng vi chnh xc vmu sc v tng th. y l phng php chto khun in ng

ng trong giai on trc khi my khc ng ng in txut hin.

Khc vi phng php quang ho phng php khc in tda trn c s

vic sdng my khc in ttng. Cc phn tcn in sau khi hon

thin bn in trn my vi tnh sc truyn thng sang my khc trc ng

ng , my khc in tssdng mt u khc tia Lase bn thng vo trcng ng qua skhc ln trc nhng phn tcn in .

nng su ca vt khc ty thuc vo m nht v tng thca bi

mu, yl phng phpm hin nay hu ht ngnh in ng ng cc nc

pht trin ang sdng. nc ta hin nay hu ht u c to bng


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phng php ny do c nhiu uim nh: Bo m chnh xc ca phn

tin , qu trnh thc hin nhanh chng v bqua c nhiu cng on

trong qu trnh chto khun in ng ng, gim bt stc ng ca cc yu

ttrong cng on chto khun in so vi phng php chto khun inbng phng php quang ho.

Ch :

Phi m bo schnh xc vkch thc ca hnh nh trong tt ccc cng

on ca qu trnh kthut. Qu trnh phn mu cng tng tnh chp

phn mu trong phng php in offset. Nhng phng php in ng ng

khc vi phng php in Typ v in Offset chtng thca bi mu c

truyn sang tin nhdy ca lp mc nn phng php in ng ng ch

cn in 3 mu in phc chcc bi mu mu, mu tht t khi c s

dng, cng ging nh trong phng php in offset, cc phim m bn v

dng bn ca phng php in ng ng phi c sa cha hon chnh

trc khi phi bn.

V bn in ng ng c chto cng phu v rt phc tp nn khng th

chbn in thnh trong in Offset vi pp in ng ng khun in tht v in th

l mt. Giy pigment c cu to bi lp keo gelatine bt sng sau khi

nh sng i qua phim.Ngi ta dng pp dn tip giy pigment ng vai tr

trung gian hp cht cm quang dng cho giy picmng thng l cc mui

Bicromat.


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IN OFFSET

In offset l hnh thc in n cng nghip phbin nht hin nay. In offset l

qu trnh truyn cc thng tin tkhun in ln bmt vt liu in bng mcmt mu hoc nhiu mu di mt p lc trn thit bgi l my in.

Lch s

My in dng kthut offset v thch bn u tin ra i Anh khong

nm1875 v c thit kin ln kim loi. Trng offset lm bnggiy

cc tng truyn hnh nh cn in tbn in thch bn sang bmt kim loi.

Khong 5 nm sau, giy cc tng c thay bng cao su.

Ngi u tin p dng kthut in offset cho in n trn giy c thl Ira

Washington Rubel nm1903.ng tnh cnhn thy mi khi mt tgiy

khng c a vomy in thch bn ca ng mt cch ng nhp, bn in

thch bn in lntrng in c bc bngcao su,v tgiy cho vo tip theo

bdnh 2 hnh: bn in thch bn mt trn v bn in do dnh ttrng in

mt di. Rubel cng nhn thy hnh nh in ttrng in cao su nt v sch

hn v ming cao su mm p u ln giy hn l bn in bngcng. ng

quyt nh in thng qua cc tm bng cao su. c lp vi Rubel, hai anh

em Charles Harris v Albert Harris cng pht hin ra iu ny v chto

my in offset cho Cng ty In n Tng Harris.

Cc thit kca Harris, pht trin tmy in gm cc trng quay, rt ginghnh vtrong bi. N gm mt trng bn in tip xc cht vi cc cunmcin vnc.Mt trng cao su tip xc ngay bn di trng xp ch. Trng in

bn di c nhim vn cht tgiy vo trng cao su truyn hnh nh.Ngy nay, c chc bn ny vn c dng, nhng nhiu ci tin cthc hin, nh thm in hai mt hay np giy bng cun giy (thay v ccming giy).Trong nhng nm 1950, in offset trthnh kthut in phbin nht cho inn thng mi, sau khi nhiu ci tin c thc hin cho bn xp
http://vi.wikipedia.org/wiki/M%C3%A1y_inhttp://vi.wikipedia.org/wiki/Anhhttp://vi.wikipedia.org/wiki/1875http://vi.wikipedia.org/w/index.php?title=Gi%E1%BA%A5y_c%C3%A1c_t%C3%B4ng&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Gi%E1%BA%A5y_c%C3%A1c_t%C3%B4ng&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Gi%E1%BA%A5y_c%C3%A1c_t%C3%B4ng&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Gi%E1%BA%A5y_c%C3%A1c_t%C3%B4ng&action=edit&redlink=1http://vi.wikipedia.org/wiki/1903http://vi.wikipedia.org/wiki/1903http://vi.wikipedia.org/w/index.php?title=Tr%E1%BB%91ng_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Tr%E1%BB%91ng_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Tr%E1%BB%91ng_in&action=edit&redlink=1http://vi.wikipedia.org/wiki/Cao_suhttp://vi.wikipedia.org/w/index.php?title=%C4%90%C3%A1_(kho%C3%A1ng_ch%E1%BA%A5t)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%C4%90%C3%A1_(kho%C3%A1ng_ch%E1%BA%A5t)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/wiki/N%C6%B0%E1%BB%9Bchttp://vi.wikipedia.org/wiki/N%C6%B0%E1%BB%9Bchttp://vi.wikipedia.org/wiki/N%C6%B0%E1%BB%9Bchttp://vi.wikipedia.org/wiki/N%C6%B0%E1%BB%9Bchttp://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%C4%90%C3%A1_(kho%C3%A1ng_ch%E1%BA%A5t)&action=edit&redlink=1http://vi.wikipedia.org/wiki/Cao_suhttp://vi.wikipedia.org/w/index.php?title=Tr%E1%BB%91ng_in&action=edit&redlink=1http://vi.wikipedia.org/wiki/1903http://vi.wikipedia.org/w/index.php?title=Gi%E1%BA%A5y_c%C3%A1c_t%C3%B4ng&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Gi%E1%BA%A5y_c%C3%A1c_t%C3%B4ng&action=edit&redlink=1http://vi.wikipedia.org/wiki/1875http://vi.wikipedia.org/wiki/Anhhttp://vi.wikipedia.org/wiki/M%C3%A1y_in


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ch,mc in vgiy,ti u ha tc in v tui thcc bn xp ch. Ngynay, a sin n, gm cin bo ch, sdng kthut ny.

Quy trnh in n trong Offset1.

Cc u im ca kthut in offset:- Cht lng hnh nh caont v sch hn in trc tip t bn in ln

giy v ming cao su p u ln b mt cn in.

- Kh nng ng dng in n ln nhiu b mt, k c b mt khng phng(nhg,vi,kim loi,da,giyth nhm).

- Vic ch to cc bn in d dng hn.- Cc bn in c tui th lu hnv khng phi trc tip tip xc vi

b mt cn in.In offset ngy nay trthnh kthut in phbin nht trong in n thngmi. Tuy vy trong cc in n dnh cho th vui c nhn, ngi ta vn c thto ra mt st sch vi cht lng cao, sdng cch in trc tip. Mt s

ngi vn thch cc ng nt chm ni li trn giy tvic in trc tip.Thm ch mt ssch kiu ny cn c in bng cc bn in c xp tcccon chch,y l cng nghin typo,mt cng nghkh c.

2.

Cc dng cng nghdung trong chbn: Cng nghCTF
http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1http://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/wiki/G%E1%BB%97http://vi.wikipedia.org/wiki/G%E1%BB%97http://vi.wikipedia.org/wiki/G%E1%BB%97http://vi.wikipedia.org/w/index.php?title=V%E1%BA%A3i_(may_m%E1%BA%B7c)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=V%E1%BA%A3i_(may_m%E1%BA%B7c)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=V%E1%BA%A3i_(may_m%E1%BA%B7c)&action=edit&redlink=1http://vi.wikipedia.org/wiki/Kim_lo%E1%BA%A1ihttp://vi.wikipedia.org/wiki/Kim_lo%E1%BA%A1ihttp://vi.wikipedia.org/wiki/Kim_lo%E1%BA%A1ihttp://vi.wikipedia.org/wiki/Dahttp://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/w/index.php?title=Ch%C3%AC_(nguy%C3%AAn_t%E1%BB%91)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Ch%C3%AC_(nguy%C3%AAn_t%E1%BB%91)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=In_typo&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=1._C%C3%B4ng_ngh%E1%BB%87_CTF&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=1._C%C3%B4ng_ngh%E1%BB%87_CTF&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=1._C%C3%B4ng_ngh%E1%BB%87_CTF&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=1._C%C3%B4ng_ngh%E1%BB%87_CTF&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=1._C%C3%B4ng_ngh%E1%BB%87_CTF&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=In_typo&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=Ch%C3%AC_(nguy%C3%AAn_t%E1%BB%91)&action=edit&redlink=1http://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/wiki/Dahttp://vi.wikipedia.org/wiki/Kim_lo%E1%BA%A1ihttp://vi.wikipedia.org/w/index.php?title=V%E1%BA%A3i_(may_m%E1%BA%B7c)&action=edit&redlink=1http://vi.wikipedia.org/wiki/G%E1%BB%97http://vi.wikipedia.org/wiki/Gi%E1%BA%A5yhttp://vi.wikipedia.org/w/index.php?title=M%E1%BB%B1c_in&action=edit&redlink=1


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Cng nghCTF l cng nghchbn strong dliu s(Digital)tmy tnh c chuyn thnh dliu tng t(Anolog) trn phimthng qua cc my ghi phim, phim c em bnh trc khi phi truyn hnh nh ln bn in. Quy trnh tng qut ca cng nghCTF

c m ttheo s sau:Cng nghCTF c sdng giy scanCng nghCTF ghi phim theo tng trangCng nghCTF ghi phim khbn in

Computer to plate "Computer to plate" l cm tm tcng ngh

chbn, trong dliu stmy tnh c ghi trc tip ln bn inm khng qua khu trung gian l phim. Bn in sau khi c ghi hnhc thc hin ngay trn hthng my ghi bn hoc c a tihin my hin bn chuyn dng. Sau , bn in c lp ln my in

theo cch thng thng tin hnh cng vic in. Cng nghComputer to Press (CTPress)

Cng nghComputer to press/direct imagingCng nghComputer to Print

3.

Nguyn l in Offset:

In offset l phng php in phng, cc thng tin hnh nh c thhin

trn bn in c tnh quang ho to ra cc phn tin bt mc v phn tkhng in th bt nc. Ngoi ra hnh nh trn khun in phi l hnh nhthun, tc l cng phng vi tin sc in ra
http://vi.wikipedia.org/w/index.php?title=2._Computer_to_plate&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Press_(CTPress)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Press_(CTPress)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Press_(CTPress)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Press_(CTPress)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.1_C%C3%B4ng_ngh%E1%BB%87_Computer_to_press/direct_imaging&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.1_C%C3%B4ng_ngh%E1%BB%87_Computer_to_press/direct_imaging&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.1_C%C3%B4ng_ngh%E1%BB%87_Computer_to_press/direct_imaging&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.1_C%C3%B4ng_ngh%E1%BB%87_Computer_to_press/direct_imaging&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.2._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Print&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.2._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Print&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.2._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Print&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.2._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Print&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.2._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Print&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3.1_C%C3%B4ng_ngh%E1%BB%87_Computer_to_press/direct_imaging&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=3._C%C3%B4ng_ngh%E1%BB%87_Computer_to_Press_(CTPress)&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=2._Computer_to_plate&action=edit&redlink=1


10/22

Cu to my in offsetMt my in offset tri gm c cc bphn chyu nh: mt bphncung cp giy, mt hay nhiu n vin, cc thit btrung chuyn agiy qua my in, mt bphn ra giy v cc bphn btrthm nh bniu khin my in.Thng thng mt n vin trong my in offset tri c ba trc chnhcng hthng lm m v hthng ch mc ln khun in:

ng bn: l mt trc ng bng kim loi, trn khun in phn tinbt mc cn phn tkhng in bt nc.

ng cao su: l mt trc ng mang tm cao su offset, c cu togm mt lp vi bc vi cao su tng hp truyn hnh nh tkhun in ln bmt vt liu in.

ng p: l mt trc khi quay lun tip xc vi ng cao su, lmnhim vchuyn giy v cc vt liu in khc.

Hthng cp m: l hthng cc l lm m bng dung dch lm

m c cha cc cht phgia nh: axit, gm arabic, cn isopropylhay cc tc nhn lm m khc. Hthng cp mc: l hthng cc l ch mc cho bn in. Cc

thnh phn quan trng khc. Ngoi cc n vin ra, trong my inoffset mt mu hay nhiu mu cn bao gm cc bphn sau:
http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_b%E1%BA%A3n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_b%E1%BA%A3n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_b%E1%BA%A3n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_b%E1%BA%A3n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_cao_su:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_cao_su:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_%C3%A9p:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_%C3%A9p:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_m%E1%BB%B1c:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=H%E1%BB%87_th%E1%BB%91ng_c%E1%BA%A5p_%E1%BA%A9m:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_%C3%A9p:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_cao_su:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=%E1%BB%90ng_b%E1%BA%A3n:&action=edit&redlink=1


11/22

Bphn np giy: lm nhim vht giy v cc vt liu inkhc tbn cung cp giy ln v a xung n vin utin.

Cc bphn trung chuyn: (thng thng l cc trc ng c

nhp kp giy) c khnng vn chuyn giy i qua my in. Bphn ra giy: l bphn nhn giy ra v vgiy u

thnh cy giy trn bn ra giy

Hthng lm mHthng lm m trong in offset tri cung cp dung dch lm m gc nc, hocdung dch mng nc ln bmt khun in trc khi n c ch mc. Dung dchlm m gicho phn tkhng in trn khun c m t do n khng bt mc.

N c ch ln ton bbn in.

Tuy nhin, cc phn tkhng in bt nc v y mc trn khun, chng c tora theo cch ht bm mt lp mng gm arabic trong qu trnh chto khun in, l hydrophilic, hay cht a nc, trong khi cc phn tin l hydrophobic, haycht c khuynh hng y nc. Thc ra nc bn thn n c thc sdng lm m bn. Mt vi my in offset tri c thchn sdng mt mnh nc incc n phm slng t. Tuy nhin, lp y mc ny dn dn lt ra khi khi khunin tip tc sdng trn my. Cc ho cht trong dung dch lm m bsung thmy mc cho lp ny.

Hthng truyn mcHthng cung cp mc in trong my in offset tri c 4 chc nng c bn sau:

Dn mc tl mng mc n khung in. Tch lp mc dy ra thnh lpmc mng ng u trn cc l truyn. Ch mc ln cc phn tin trn bn.Loi bmc in ti lp trn l ch tcc cng vic in trc .
http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_ra_gi%E1%BA%A5y:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=C%C3%A1c_b%E1%BB%99_ph%E1%BA%ADn_trung_chuy%E1%BB%83n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=B%E1%BB%99_ph%E1%BA%ADn_n%E1%BA%A1p_gi%E1%BA%A5y:&action=edit&redlink=1


12/22

Cu to ca bphn cung cp mc

Mng mc cha mc in cn cung cp trong qu trnh in

L chm l mt l chuyn lun phin tip xc gia l mng mc v l utin ca hthng cp mc, thng thng l l tn trong hthng cpmc.L tn v l sn: l cc l chuyn ng n khp bng bnh rng v dysn khng chquay trn c m cn chuyn ng qua li theo phngngang vi trc ng ttri qua phi Mng mc, hai thnh bn hng mngmc, dao gt v l mng mc v lm nhim vch dn mng lp mc in lncc l v xo cc lp mc in trc trn l ch. [[ Cc l trung gian:]] l

cc l chuyn ng c da vo stip xc vi cc l chuyn ng khcc ni kt vi bphn truyn chuyn ng, cc l trung gian nm gia lchuyn v l ch, lm nhim vv nh lng mc cp cho qu trnh in;thng c gi l l nh lngkhi chng tip xc vi hai l khc hocc gi l l dnkhi chng ch tip xc vi mt l khc; v d: nh ltn. Cc l ch bn in: gm 3-4 l ch bn thng c ng knh khc nhau,tip xc v ch mc ln bn in.
http://vi.wikipedia.org/w/index.php?title=L%C3%B4_t%C3%A1n_v%C3%A0_l%C3%B4_s%C3%A0n:&action=edit&redlink=1http://vi.wikipedia.org/w/index.php?title=L%C3%B4_t%C3%A1n_v%C3%A0_l%C3%B4_s%C3%A0n:&action=edit&redlink=1


13/22

IN FLEXO

In flexo (flexography) l kthut in ni, cc phn tin (hnh nh, chvit..)

trn khun in nm cao hn cc phn tkhng in. Hnh nh trn khun in

ngc chiu, c cp mc bng trc anilox, sau truyn mc trc tip ln

vt liu in qua qu trnh p in.

In flexo c sdng in cc sn phm nh: thng carton, cc loi decal

nhn hng ha, cc loi mng...


14/22

Nguyn l in flexo:

Hnh m tnguyn l in Flexo

1.

Nguyn l cp mc in - Trc anilox:

Trong in flexo, mc in c cp cho khun in nhtrc anilox. Trc aniloxl mt trc kim loi, bmt c khc lm nhiu nh (cell). Trong qutrnh in, trc c nhng mt phn trong mng mc, mc s lt vo cc trn bmt trc, phn mc nm trn bmt sc dao gt mc gt i. Sau khun in s tip xc vi trc v nhn mc ttrong cc cell trn bmttrc in.


15/22

Hnh m tcell trn trc anilox

2.

Khun in Flexo:

Khun in flexo c lm bng nha photopolymer. Khun in c thcchto bng phng php quang ha, CTP hoc khc laser, sau c gnln trc in nhbng keo 2 mt hoc ttrng. Vic la chn khun in (dy, cng, slp) phthuc vo vt liu in (giy, carton hay mng).Trong chbn in flexo cn mt vn cn ch l la chn gc tram cho

ph hp trnh hin tng moire' do tng tc vi gc tram v tn scatrc anilox.

3.

Cc phng php nh lng mc, c 2 hthng chnh:

A - hthng 1 l nm trong mng mc : y ngi ta li chia lm 2 dng:

Hthng dng 1 l ch (Quetschwalze) : l ch c li bng kimloi hoc vt liu nhn to, lp vbc c tnh n hi, mm ch pvo bmt trc anilox, lng mc trn bmt trc anilox scgt li, trmc nm trong cc lnh(npfchen) mc ny sctryn ln bn in v sau l vt liu in.


16/22

Hnh m ththng 1 l ch mc

- u im : nhc lp bc n hi nn c khnng sdng trc anilox

tmetal, khng cn dng trc anilox tKeramik (gm) vn rt ttin.

- Nhc im : tc chm, l ch sht bt phn mc tcc lnh

cha mc v do sthiu mc ln bn in. tc cao l ch chu

mt moment un cong v do lng mc cc lcha trn trcanilox skhng ng nht --> sgia tng tng thrt ln.

Hthng dao gt : phn loi da trn gc dao gt. gi l dng bnkhi gc dao < 90 v ngc li.

Hthng dao gt

Gc dao dng bn c nhc im l sgia tng tng thtc

my cao ( nhng nhhn dng l ch). tri li hthng gcdao ln hn 90 (m bn) khng xut hin sgia tng tng th.ngoi ra y l hthng dao "lthin", do nhc im khc can l dung mi mc in bay hi nhanh.

B -Hthng dao kn :khng c l mng mc, mc c cha trong mt hthng khp kn tbnh cha c hthng o v iu chnh nht, hthng


17/22

bm sy mc v hthng dao gt, ngoi ra c 2 lthot cho mc trvbnh cha iu chnh nht, nhit ..ca mc in.

Hthng dao kn

Hthng dao gt c 2 li, li dao lm vic (arbeitsrakel) bao gicng chm bn (gc > 90) khng phthuc vo hng quay ca trc anilox,li dao cn li ng vai tr khp kn khng cho mc thot ra. do dao lmvic l dng m bn nn c tnh c li ca loi dao ny tng tnh hthng dao mc gc > 90 : khng c hin tng gia tng tng thv lngmc khng phthuc vo tc my in.

Hthng dao gt ni chung phi dng trc anilox gm (Keramik) v scchu ng mi mn v bn ca Keramik hn hn metal.


18/22

S thhin lng mc cp ln trc anilox phthuc vo tc my in

Trc Anilox

Anilox c thxem l thnh phn ct li trong hthng truyn mc,ngi ta xem n nh l 1 "trc in ng ng khng c motive (ngha lkhng c phn tin). trn bmt trc anilox l cc lnh(Npfchen)cha mc, thtch mc in sc tnh theo n v[cm/m] hoc[ml/m].

Bmt trc anilox c thlm tkim loi (thp, ng mcrm (himgp)) hoc Keramik (gm).


19/22

Trc anilox

C 6 i lng chnh m t1 trc anilox :

- ng knh, bdi trc- Cch khc trc ( dng ng hoc dng theo nhp)-

Trt tcc Npfchen : dng Orthogonal (trc giao tip xc 4 cnh)hay dng Hexagonal (tip xc 6 cnh)

- Gc tram ( y cc lnhxem nh ht tram v da vo trt tspxp m ngi ta c c gc khc nhau, tu trung l 3 gc 45 choOrthogonal, 30/60 cho Hexagonal)

- Mt Npfchen/tram [Linie/cm]- Thtch cha mc ca Npchen : dy vch ngn Npfchen, m

ca Npfchen..Cch khc trc anilox cng rt khc nhau, ngi ta c thdng

phng php khc bng 1 thit bg theo nhp ln trc th, hoc dngmt l (Molette) ln u ln bmt trc. c im chung ca 2phng php ny l phn tc khc trn trc anilox sl phn mbn ca thit bkhc.


20/22

Dng molette khc trc

Ngoi ra c thdng phng php cin vi giy Pigment ca phnin ng ng to chi tit trn bmt trc anilox.1./ Cu to:Trc anilox Keramik cu to t3 lp , trong lp Keramik phi dy Npfchen c thto trc tip trn .

Cu to trc aniloc Keramik

2./ Phng php gia cng:a - Phun ct ln bmt trc th to nhm

b - Phlp chng rst bng phng php Plasmac - Phlp Keramik cng bng phng php Plasma


21/22


22/22

Hnh m tphlp Keramik trn trc anilox

d - Phay, tin, mi mn .. to dng hnh trtrn, to lng bmt trce - Lp t hthng Laser nhit v bt u khcL do sdng Laser c nu trn : cng v tnh cht vt liu lm cho

phng php khc c v ha hc khng ththc hin c.Ngun Laser c 2 loi : Tia Laser YAG hoc tia Laser CO2f - sau khi khc xong trc squa cng on hon tt cui cng (Finishing)To lng mt ln na cho bmt trc do trong qu trnh khc sny sinhmt svn lm cc vch ngn cc Npchen khng ng nht vcao.

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