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�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

�B

lock

ing

�C

ell P

lugg

ing

�C

olor

Hue

Shi

ft

�C

olor

Too

Stro

ng

�C

olor

Var

iatio

n

�C

olor

Wea

k

�C

ylin

der W

ear

�D

ryin

g In

�Fo

amin

g

�G

loss

(Too

Hig

h O

r Too

Low

)

�In

adeq

uate

D

ryin

g

�In

k S

ettli

ng

�M

ottli

ng,

Pud

dlin

g,

Vol

cano

es

�P

icki

ng

�P

oor I

nk M

ileag

e

�P

oor P

rinta

bilit

y

�P

oor T

rapp

ing

�P

oor W

ipe

�S

cuffi

ng

�S

cum

min

g

�S

kipp

ing

�S

trike

-Thr

ough

�W

hisk

erin

g

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ress

con

ditio

ns

2.In

k fil

m to

o th

ick

3.Im

prop

er re

sin

sele

ctio

n in

the

ink

form

ula

4.To

o m

uch

slow

sol

vent

bei

ng u

se

to a

djus

t vis

cosi

ty o

f the

ink

Solu

tion:

1.In

crea

se o

ven

tem

pera

ture

s. M

ake

sure

exh

aust

blo

wer

s ar

e at

max

imum

ve

loci

ty; u

se s

pot a

ir in

hea

vily

etc

hed

area

s2.

Red

uce

visc

osity

of i

nk3.

Con

sult

with

ink

man

ufac

ture

r to

refo

rmul

ate

with

bet

ter s

olve

nt re

leas

e or

hig

her m

eltin

g po

int r

esin

4.R

evie

w s

olve

nts

bein

g us

ed fo

r vi

scos

ity a

djus

tmen

ts a

nd g

et

reco

mm

enda

tion

from

ink

supp

lier

Blo

ckin

gSy

mpt

om:T

he p

rint s

ide

and

unpr

inte

d si

de o

f the

prin

ted

mat

eria

ls

stic

k to

geth

er w

hen

they

are

in c

onta

ct in

the

roll.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.C

ells

plu

gged

with

pap

er, p

aper

co

atin

g an

d in

k

Solu

tion:

1.•C

heck

pap

er c

oatin

g in

tegr

ity a

gain

st

cont

rol p

aper

•Inc

reas

e in

k fo

unta

in te

mpe

ratu

re•M

aint

ain

ink

foun

tain

tem

pera

ture

ab

ove

dew

poi

nt a

t all

times

Cel

l Plu

ggin

gSy

mpt

om:W

eak,

non

-uni

form

dot

s. D

iffer

s fr

om d

ryin

g in

, as

resi

due

in c

ells

doe

s no

t res

olub

ilize

read

ily.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.Im

prop

er c

ell c

onfig

urat

ions

on

cylin

ders

2.E

lect

ric e

yes

may

be

out o

f al

ignm

ent

3.D

ryer

s m

ay b

e to

o ho

t, ca

usin

g th

e w

eb to

shr

ink

4.P

oor r

egis

ter

5.In

k vi

scos

ity m

ay b

e to

o hi

gh6.

Too

muc

h sl

ip c

ompo

und

in th

e in

k

Solu

tion:

1.C

heck

cel

l con

figur

atio

n; c

onsu

lt cy

linde

r dep

artm

ent

2.A

djus

t the

ele

ctric

eye

s

3.A

djus

t hea

t lev

el in

dry

ers

4.C

onsu

lt cy

linde

r dep

artm

ent

5.Lo

wer

ink

visc

osity

by

addi

ng s

olve

nt6.

Add

less

slip

com

poun

d to

the

ink

or

add

fresh

ink

to fo

unta

in; c

onsu

lt in

k m

anuf

actu

rer

Col

or H

ue S

hift

Sym

ptom

:Mov

emen

t with

in re

gist

er c

ause

s ch

ange

s in

sha

de to

oc

cur.

Pred

omin

antly

see

n in

ligh

t ton

e ar

eas.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.C

ell v

olum

e to

o gr

eat

2.In

appr

opria

te c

ylin

der e

tch

or

engr

avin

g3.

Non

abso

rben

t sto

ck4.

Ink

visc

osity

too

high

5.In

k pi

gmen

tatio

n to

o st

rong

Solu

tion:

1.La

cque

r in

part

of th

e cy

linde

r to

redu

ce c

ell v

olum

e2.

Con

sult

cylin

der d

epar

tmen

t

3.A

dd s

olve

nt to

redu

ce in

k vi

scos

ity4.

Add

sol

vent

to re

duce

ink

visc

osity

5.A

dd c

lear

ext

ende

r

Col

or T

oo S

tron

gSy

mpt

om:V

isua

l col

or d

iffer

ent f

rom

sta

ndar

d.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.La

ck o

f vis

cosi

ty c

ontro

l

2.A

utom

atic

inke

r not

adj

uste

d;

solv

ent,

ink

and

varn

ish

flow

ing

in

at ra

ndom

, une

qual

rate

s3.

Inco

nsis

tent

ope

rato

r pro

cedu

res

4.V

aria

tion

in ty

pe a

nd c

ondi

tion

of

equi

pmen

t: cy

linde

rs, i

mpr

essi

on

rolle

rs, d

octo

r bla

des

5.C

hang

es in

pap

er

6.V

aria

tions

in in

k ba

tche

s

Solu

tion:

1.E

stab

lish

one

set o

f pro

cedu

res

for a

ll op

erat

ors;

add

onl

y m

easu

red

amou

nts

of

solv

ent t

o re

duce

ink

to p

rope

r run

ning

vi

scos

ity2.

Che

ck fl

ow ra

tes

and

equa

lize;

cal

ibra

te

flow

rate

s

3.E

stab

lish

one

set o

f pro

cedu

res

4.E

limin

ate

or re

duce

var

iatio

ns in

eq

uipm

ent b

etw

een

pres

ses;

cle

an

cylin

ders

, rol

lers

, doc

tor b

lade

s; c

heck

du

rom

eter

, rea

ding

of i

mpr

essi

on ro

llers

; re

plac

e if

nece

ssar

y; a

djus

t vis

cosi

ty fo

r ea

ch p

rint u

nit

5.A

djus

t ink

vis

cosi

ty to

com

pens

ate

for

chan

ge, i

f pos

sibl

e; c

onsu

lt in

k m

anuf

actu

rer f

or a

dditi

onal

ass

ista

nce

6.In

ks m

ay v

ary

in s

treng

th; c

onsu

lt in

k m

anuf

actu

rer

Col

or V

aria

tion

Sym

ptom

:Inc

onsi

sten

t col

or re

prod

uctio

n.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.W

orn

cylin

der

2.To

o m

uch

solv

ent a

dded

whe

n in

k w

as re

duce

d to

pre

ss v

isco

sity

3.E

xces

s cl

ean-

up s

olve

nt in

the

syst

em4.

Cyl

inde

r dirt

y —en

crus

ted

with

ink

5.D

octo

r bla

de a

ngle

set

inco

rrect

ly6.

Impr

essi

on ro

ller d

urom

eter

too

high

7.V

ery

abso

rben

t pap

er s

tock

8.In

k pi

gmen

tatio

n w

eak

9.“O

ver e

xten

ded”

, i.e

. too

muc

h ex

tend

er o

n pr

ess

Solu

tion:

1.C

onsu

lt cy

linde

r dep

artm

ent;

re-e

tch

cylin

der t

o in

crea

se c

ell v

olum

e. D

ecre

ase

exte

nder

cut

s; a

dd to

ner i

f nee

ded

2.R

epla

ce in

k or

add

fres

h in

k to

incr

ease

vi

scos

ity3.

Rep

lace

ink

or a

dd fr

esh

ink

to in

crea

se

visc

osity

4.C

lean

cyl

inde

r with

bru

sh a

nd s

olve

nt to

re

mov

e dr

ied

ink

from

cel

ls; u

se b

rass

br

istle

bru

sh fo

r chr

ome

5.Fl

atte

n an

gle

to a

pply

mor

e in

k6.

Con

sult

rolle

r man

ufac

ture

r and

repl

ace

if ne

cess

ary

7.R

un a

hig

her v

isco

sity

, stro

nger

ink

and/

or

less

ext

ende

r in

foun

tain

8.A

dd to

ners

to in

k or

dec

reas

e ex

tend

er c

uts

9.C

heck

aut

o in

k ba

tche

r

Col

or W

eak

Sym

ptom

:Vis

ual c

olor

diff

eren

t fro

m s

tand

ard.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.B

ad c

hrom

e

2.Fo

reig

n pa

rticl

es lo

dged

beh

ind

the

doct

or b

lade

3.Irr

egul

ar c

ylin

der s

urfa

ce

4.P

artin

g sh

ell

5.D

octo

r bla

de

6.In

k dr

ying

too

fast

7.In

k ab

rasi

vene

ss

8.P

aper

or p

aper

coa

ting

abra

sive

ness

Solu

tion:

1.C

heck

thic

knes

s, p

latin

g, h

ardn

ess,

sm

ooth

ness

and

duc

tility

of c

hrom

e pl

atin

g 2.

Filte

r ink

with

at l

east

a 2

5-m

icro

n fil

terin

g de

vice

and

/or r

emov

e in

k, a

ddin

g fre

sh in

k3.

Pol

ish

surfa

ce; r

e-cu

t and

re-c

hrom

e cy

linde

r; co

nsul

t cyl

inde

r dep

artm

ent

4.H

ave

a ne

w c

ylin

der m

ade;

con

sult

cylin

der

depa

rtmen

t5.

Che

ck d

octo

r bla

de p

ress

ure;

che

ck b

lade

an

d an

gle

for a

ny u

nusu

al w

ear

6.R

educ

e dr

ying

rate

of i

nk (S

ee "D

ryin

g in

")7.

Hav

e su

pplie

r re-

chec

k al

l raw

mat

eria

ls in

fo

rmul

a fo

r abr

asiv

enes

s8.

Che

ck fo

r con

tam

inat

ion

in fo

unta

in (p

aper

co

atin

g, s

ludg

e, e

tc.);

con

sult

with

pap

er

supp

lier a

bout

cha

ngin

g pa

per

Cyl

inde

r Wea

rSy

mpt

om:A

bras

ive

dam

age

to th

e ch

rom

e su

rfac

e of

the

cylin

der.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ress

con

ditio

ns

2.In

k dr

ying

too

fast

Solu

tion:

1.

•Che

ck a

ir ve

loci

ty a

nd o

ven

tem

pera

ture

•Che

ck a

ngle

of d

octo

r bla

de•R

emov

e an

y sp

ot a

ir sy

stem

that

may

be

con

nect

ed a

nd c

ausi

ng d

ryin

g-in

•C

ool f

ount

ains

•I

ncre

ase

pres

s sp

eed

•Wip

e or

scr

ub c

ylin

der

2.

•Add

slo

w d

ryin

g so

lven

t•V

ehic

le s

yste

m c

an b

e ch

ange

d•D

ecre

ase

visc

osity

•Adv

ise

ink

supp

lier o

f thi

s co

nditi

on•U

se s

olve

nt w

ith m

ore

solu

bilit

y

Dry

ing

InSy

mpt

om:S

ympt

om: I

nk is

dry

ing

in th

e cy

linde

r cel

ls.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.In

k fa

lls e

xces

sive

dis

tanc

e w

hen

recy

cled

into

con

tain

er2.

Too

muc

h ai

r is

intro

duce

d in

to th

e in

k

3.A

ir is

not

allo

wed

to e

scap

e4.

Too

muc

h so

lven

t add

ed w

hen

ink

was

redu

ced

to p

ress

vis

cosi

ty5.

Impr

oper

ly fo

rmul

ated

ink

Solu

tion:

1.E

limin

ate

long

fall

by u

sing

hos

e or

pi

pe to

intro

duce

ink

into

pan

2.C

heck

for a

nd re

pair

leak

y pu

mp;

ad

just

pum

p sp

eed

to re

duce

agi

tatio

n.

Mai

ntai

n in

k le

vel w

ell a

bove

pum

p in

take

3.A

dd s

olve

nt to

ink

to lo

wer

vis

cosi

ty4.

Add

fres

h in

k to

incr

ease

vis

cosi

ty

5.A

dd d

efoa

mer

com

poun

d to

ink;

co

nsul

t ink

man

ufac

ture

r

Foam

ing

Sym

ptom

:Fro

thin

g of

the

ink.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.To

o hi

gh g

loss

2.To

o lo

w g

loss

Solu

tion:

1.

•Red

uce

visc

osity

by

addi

ng s

olve

nt•U

se a

pig

men

ted

exte

nder

2.

•Add

glo

ss e

xten

der,

such

as

liqui

d re

sin

or e

xten

der v

arni

sh•I

ncre

ase

visc

osity

by

low

erin

g th

e am

ount

of s

olve

nt a

dded

to th

e vi

rgin

in

k•C

hang

e re

duci

ng s

olve

nt to

low

er

dilu

tion

ratio

•Cal

l ink

man

ufac

ture

r

Glo

ss (T

oo H

igh

or T

oo L

ow)

Sym

ptom

:Im

prop

er re

flect

ive

prop

ertie

s of

the

prin

ted

ink.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.D

ryer

tem

pera

ture

too

low

for

spee

d of

web

2.In

k fil

m d

oes

not d

ry a

t cor

rect

rate

3.R

educ

ing

solv

ent u

sed

has

too

slow

dry

ing

rate

4.P

oor s

olve

nt re

leas

e pr

oper

ties

of

ink

Solu

tion:

1.In

crea

se d

ryer

tem

pera

ture

to

spec

ifica

tion

leve

l; re

duce

web

spe

ed2.

Adj

ust p

ress

spe

ed a

nd/o

r ink

vis

cosi

ty;

cons

ult w

ith in

k m

anuf

actu

rer

3.U

se fa

ster

dry

ing

solv

ent s

uch

as fa

st

dryi

ng a

ceta

tes;

avo

id b

uild

-up

of s

low

dr

ying

sol

vent

4.C

onsu

lt w

ith in

k m

anuf

actu

rer t

o re

form

ulat

e in

alte

rnat

e ve

hicl

e

Inad

equa

te D

ryin

gSy

mpt

om:I

nk fi

lm re

mai

ns w

et o

r tac

ky to

the

touc

h.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ump

velo

city

in s

ump

too

low

2.B

uild

-up

in in

k fo

unta

in

3.P

revi

ousl

y us

ed in

k w

hich

has

low

vi

scos

ity4.

Old

ink

5.Im

prop

er in

k fo

rmul

atio

n

Solu

tion:

1.•C

heck

pap

er; r

epla

ce if

nec

essa

ry

•Adj

ust v

isco

sity

2.In

crea

se c

ircul

atio

n by

add

ing

drai

ns o

r ad

ditio

nal p

ipin

g3.

Mix

with

fres

h in

k an

d us

e

4.R

otat

e in

vent

ory

5.C

onsu

lt in

k m

anuf

actu

rer

Ink

Settl

ing

Sym

ptom

:Sep

arat

ion

of p

igm

ents

.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.N

on-u

nifo

rm p

aper

sur

face

2.P

atte

rn in

cyl

inde

r due

to la

rge

cells

3.Im

prop

er p

ress

ure

setti

ngs

on

impr

essi

on ro

ller

4.In

k fil

m to

o th

in

5.In

k im

prop

erly

form

ulat

ed

Solu

tion:

1.A

djus

t vis

cosi

ty2.

Con

sult

with

cyl

inde

r dep

artm

ent

3.A

djus

t im

pres

sion

rolle

r

4.R

epla

ce in

k or

add

fres

h in

k to

in

crea

se v

isco

sity

(See

"Col

or W

eak"

)5.

Con

sult

ink

man

ufac

ture

r

Mot

tling

, Pud

dlin

g, V

olca

noes

Sy

mpt

om:R

ando

m li

ght a

nd d

ark

area

s th

at g

ive

the

prin

ted

area

an

une

ven

appe

aran

ce.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ress

con

ditio

ns

2.In

k pr

oper

ties

3.P

aper

pro

perti

es

Solu

tion:

1.•M

ake

sure

ink

foun

tain

tem

pera

ture

is

abov

e de

w p

oint

•Red

uce

pres

s sp

eed

•Red

uce

impr

essi

on ro

ller p

ress

ure

•Mak

e su

re e

xhau

st b

low

ers

are

at

max

imum

vel

ocity

•Use

spo

t air

in h

eavi

ly e

tche

d ar

eas

2.•A

djus

t ink

vis

cosi

ties

•Add

a fa

ster

dry

ing

solv

ent

•Cha

nge

ink

syst

em fo

r bet

ter s

olve

nt

rele

ase

3.•C

heck

sur

face

stre

ngth

of s

tock

•Con

sult

with

pap

er s

uppl

ier

Pick

ing

Sym

ptom

:Rem

oval

of p

art o

f pap

er s

urfa

ce o

r und

erly

ing

ink

film

.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.E

xces

sive

was

te o

n st

art-u

p2.

Pap

er s

tock

too

abso

rben

t

3.Im

prop

er in

k an

d so

lven

t ble

nd

4.In

k pe

netra

ting

into

sto

ck to

o fa

st

5.D

iffer

ent s

peci

fic g

ravi

ties

of in

ks

Solu

tion:

1.Im

prov

e st

art-u

p pr

oced

ure

2.If

poss

ible

, cha

nge

to a

less

abs

orbe

nt

pape

r (S

ee "S

trike

Thr

ough

")3.

Adj

ust t

o pr

oper

ink

and

solv

ent r

atio

to

obta

in p

resc

ribed

vis

cosi

ty4.

Con

sult

with

ink

man

ufac

ture

r to

refo

rmul

ate

ink

with

mor

e ho

ldou

t 5.

Con

sult

your

ink

man

ufac

ture

r for

sp

ecifi

c gr

avity

val

ues

of in

ks

Poor

Ink

Mile

age

Sym

ptom

:Exc

essi

ve in

k us

ed p

er to

n of

pap

er s

tock

.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ress

con

ditio

ns

2.P

aper

pro

perti

es

3.In

k pr

oper

ties

Solu

tion:

1.•C

heck

pre

ss s

peed

•Che

ck o

ven

tem

pera

ture

•Che

ck e

xhau

st fa

ns a

nd s

pot a

ir•C

heck

ES

A ro

llers

•Che

ck d

octo

r bla

de a

nd c

ylin

der f

or

wea

r•C

heck

impr

essi

on ro

ller p

ress

ure

2.•C

heck

for f

law

s in

pap

er c

oatin

g•C

heck

for h

oles

, slu

gs, o

r wrin

kles

•Che

ck p

aper

sur

face

cha

ract

eris

tics

3.•C

hang

e so

lven

cy•R

educ

e in

k vi

scos

ity w

ith n

orm

al

thin

ner

•Red

uce

ink

with

hig

her b

oilin

g so

lven

t or

ble

nd

Poor

Prin

tabi

lity

Sym

ptom

:Lac

k of

prin

t qua

lity

due

to v

ario

us fa

ctor

s in

the

prin

ting

proc

ess.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.In

k vi

scos

ity to

o hi

gh2.

Bas

e in

k st

ill w

et

3.U

nder

lyin

g fil

m b

eing

reso

ftene

ddu

e to

hig

h ac

etat

e co

nten

t of

dilu

ting

solv

ent

4.U

nder

lyin

g in

k co

ntai

ns e

xces

sive

w

ax c

ompo

und

5.S

ilico

nes

or s

lip c

ompo

unds

in

unde

rlyin

g in

k.

Solu

tion:

1.•R

educ

e in

k vi

scos

ity2.

•Adj

ust a

ir ve

loci

ty o

f dry

ing

cond

ition

ar

ound

imag

es•R

emov

e ex

tra s

olve

nts

•Inc

reas

e ov

en te

mpe

ratu

re a

nd a

ir ve

loci

ty•I

ncre

ase

ink

dryi

ng s

peed

with

fast

-dr

ying

sol

vent

3.•B

lend

in a

lcoh

ol to

redu

ce a

ceta

te

cont

ent o

f ink

bei

ng tr

appe

d

4.•A

dd p

igm

ente

d ex

tend

er

•Red

uce

wax

com

poun

d •A

dd fr

esh

ink

5.H

ave

ink

supp

lier r

emov

e si

licon

e fro

m

ink

Poor

Tra

ppin

gSy

mpt

om:S

ucce

edin

g la

yers

of i

nk d

o no

t lay

dow

n pr

oper

ly.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ress

con

ditio

ns

2.In

k pr

oper

ties

Solu

tion:

1.•C

heck

doc

tor b

lade

for n

icks

, fla

ws

or e

xces

sive

w

ear;

reho

neor

repl

ace

if ne

cess

ary

•Che

ck a

ngle

of d

octo

r bla

de; a

djus

t if n

eces

sary

•Rem

ove

dirt

or fo

reig

n m

atte

r fro

m u

nder

doc

tor

blad

e•C

heck

railr

oads

due

to s

crat

ches

in c

ylin

der

•Inc

reas

e dr

ying

rate

of i

nk; b

low

air

betw

een

nip

and

blad

e•I

f scu

m o

ccur

s, p

olis

h cy

linde

r and

spe

ed u

p dr

ying

ra

te2.

•Ink

too

high

ly p

igm

ente

d: a

dd c

lear

ext

ende

r va

rnis

h•I

nk d

ryin

g to

o fa

st o

r slo

w: s

low

dow

n or

spe

ed u

p as

requ

ired

with

the

solv

ents

reco

mm

ende

d by

you

r in

k su

pplie

r•I

nk v

isco

sity

too

high

or l

ow: a

djus

t to

pres

crib

ed

visc

osity

Poor

Wip

eSy

mpt

om:I

nk is

not

bei

ng re

mov

ed fr

om n

on-e

tche

d ar

eas

of th

e cy

linde

r.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

ress

con

ditio

ns

2.In

k pr

oper

ties

3.P

aper

pro

perti

es

Solu

tion:

1.•I

ncre

ase

oven

tem

pera

ture

or C

FM•A

djus

t fol

der t

o im

prov

e sl

ip2.

•Add

har

dene

rs o

r wax

com

poun

ds to

in

k•C

heck

ink

visc

osity

; if l

ow, a

djus

t up

war

ds•C

hang

e in

k sy

stem

's s

olve

nt re

leas

e to

upg

rade

ink

film

inte

grity

•Not

ify in

k su

pplie

r3.

Che

ck a

bras

ion

of c

urre

nt s

tock

ver

sus

stan

dard

; con

sult

pape

r sup

plie

r

Scuf

fing

Sym

ptom

:Scr

atch

es in

prin

ted

ink

film

due

to p

oor r

ub re

sist

ance

w

hen

abra

ded.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.D

octo

r bla

de v

aria

bles

2.In

k vi

scos

ity to

o hi

gh3.

Ink

dryi

ng ra

te to

o sl

ow o

n pa

per

4.In

k dr

ying

too

slow

ly o

n cy

linde

r

5.C

ylin

der s

urfa

ce to

o sm

ooth

6.In

k fo

rmul

atio

n ou

t of b

alan

ce

Solu

tion:

1.Im

prov

e bl

ade

edge

fini

sh; s

harp

en b

lade

co

ntac

t ang

le; d

ecre

ase

blad

e th

ickn

ess;

in

crea

se b

lade

pre

ssur

e; e

nsur

e bl

ade

is

para

llel a

long

leng

th o

f cyl

inde

r2.

Red

uce

ink

with

the

reco

mm

ende

d so

lven

t3.

Incr

ease

dry

ing

rate

with

fast

er d

ryin

g so

lven

t4.

Intro

duce

loca

l air

dryi

ng; a

djus

t poi

nt o

f w

ipe

furth

er a

way

from

poi

nt o

f im

pres

sion

to

allo

w in

k fil

m to

dry

bef

ore

trans

ferri

ng to

w

eb5.

Sen

d cy

linde

r to

cylin

der d

epar

tmen

t for

re-

chro

min

g an

d po

lishi

ng6.

Con

sult

with

ink

man

ufac

ture

r

Scum

min

gSy

mpt

om:I

nk d

epos

its o

n th

e no

n-et

ched

are

as o

f the

gra

vure

cy

linde

r.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.R

ough

pap

er

2.C

ylin

der c

ondi

tions

3.In

k vi

scos

ity to

o hi

gh

4.D

ryin

g ra

te to

o fa

st (d

ryin

g in

ce

lls)

5.Im

prop

erly

form

ulat

ed in

k

Solu

tion:

1.•I

ncre

ase

impr

essi

on ro

ller p

ress

ure;

ch

ange

to h

arde

r dur

omet

erro

ller

•Mak

e su

re E

SA

is o

n an

d at

the

prop

er p

olar

ity s

ettin

g•C

hang

e E

SA

rolle

r•C

hang

e pa

per

2.•C

heck

scr

een

angl

e•C

heck

chr

ome

•Che

ck c

ell c

onfig

urat

ion

3.C

heck

vis

cosi

ty; r

educ

e to

cor

rect

leve

l by

add

ing

mea

sure

d am

ount

of s

olve

nt4.

Incr

ease

pre

ss s

peed

to re

duce

fo

unta

in te

mpe

ratu

re; c

onsu

lt w

ith in

k m

anuf

actu

rer t

o re

form

ulat

e us

ing

solv

ents

with

low

er e

vapo

ratio

n ra

tes

5.C

onsu

lt in

k m

anuf

actu

rer

Skip

ping

Sym

ptom

:Cel

ls fa

il to

prin

t out

, cau

sing

spe

ckle

s in

prin

ted

mat

eria

ls.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.C

ylin

der e

tch

too

deep

2.P

aper

too

abso

rben

t

3.C

hang

e in

bas

is w

eigh

t of p

aper

4.In

suffi

cien

t ink

hol

dout

Solu

tion:

1.•L

acqu

er c

ylin

der

•Add

pig

men

ted

exte

nder

•Inc

reas

e in

k vi

scos

ity•I

ncre

ase

oven

tem

pera

ture

and

air

velo

city

2.If

poss

ible

, cha

nge

to a

less

abs

orbe

nt

pape

r or i

ncre

ase

ink

visc

osity

3.R

ever

t to

orig

inal

bas

is w

eigh

t4.

Con

sult

with

ink

man

ufac

ture

r to

refo

rmul

ate

ink

for m

ore

hold

out

Strik

e-th

roug

hSy

mpt

om:E

xces

sive

ink

abso

rbin

g in

to p

aper

sto

ck a

nd a

ppea

ring

on re

vers

e si

de.

�Fl

exog

raph

y�

Pub

Gra

vure

�Pk

gG

ravu

re�

Shee

tfed

Offs

et�

UV

�W

eb O

ffset

�N

ews

Ink

�H

OM

E

Ask

abo

ut:

HO

MEPa

ckag

ing

Gra

vure

Tro

uble

shoo

ting

Gui

de

Cau

se:

1.P

aper

pro

perti

es

2.P

ress

con

ditio

ns

3.In

k pr

oper

ties

Solu

tion:

1.R

emov

e st

atic

from

web

with

tins

el,

hum

idity

or o

ther

sta

tic e

limin

ator

s2.

•Cha

nge

cond

uctiv

ity o

f im

pres

sion

ro

ller

•Dec

reas

e cy

linde

r cel

l vol

ume

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