Gestetner 420 User manual

Operating instructions
: Gestetner
~~®

CONTENTS
How to operate your Gestetner 420 Stencil Duplicator
Re-running used Stencils
Color Changing...
Feeding Short Paper and Cards
Closing Machine
Summary of operating procedure
Page
2-7
7
8-9
11
12
HAVE YOU SENT IN YOUR GUARANTEE REPLY PAID CARD ON PAGE ELEVEN ?
1

. . . . . . . . .
THE
0R GAN IZ AJ I ON
BEHIND
GESTElNER
• • • • • • • • •
How to
operate your
Gestetner
Stencil Duplicator
Check that Switch is fully lowered in its 'off' position
and Speed Control is turned fully counter clockwise.
Connect power plug to electrical outlet. Turn Handle
outwards. Lower Feedboard and Receiving Tray.
Check that Feed Lever is raised and turn Handle
clockwise to ensure Feed mechanism is not operating.
Ensure that the Hand Fe ed Lever is raised.
INKING MACHINE
Open Inker Door.
Raise Tube Locking Lever.
Hold Ink Tube by the shoulder and remove cap.
NOTE: DO NOT GRIP TUBE.
Place crimped end in Tube Suppor t and insert
Tube Nozzle into Tube Holder.
Then push Tube Locking Lever fully downwards.
Close Inker Door.
To the purchaser of this machine
You have just installed your Gestetner-and may we, the
manufacturers, extend our sincerest congratulations. This
Gestetner duplicator will serve you well and faithfully for
many years to come. It has behind it a tradition of over 80
years of constant research for improvement, and an organ-
ization whose motto and keystone is SERVICE. Your local
Gestetner dealer is equipped to extend to you every possible
service and assistance-you have only to call him.
Your Investment in this Gestetner Stencil Duplicator is
secured by a world-wide organization, the oldest and largest
in its field, and by a guarantee of service which is famous
all over the world. The investment you have now made in
this Gestetner will be rapidly paid off in substantial savings.
We welcome you into the world-wide family of
Gestetner users.
FEED LEVER
RECE IV ING TRI\ Y
D
S PEED CONTROL
INKER DOOR
TUBE SUPPORT
2

Turn Ink Selector to full width inking position -
this is indicated by a full blue line appearing on top
of Ink Selector.
Start machine by raising Switch.
Apply ink by moving Ink Lever fully backwards. and
forwards with a slow. steady action until a uniform.
thin film of ink is visible, giving a slight sheen to the
surface of the Silk Screen.
Switch off machine by depressing Switch.
INK SELECTOR
The Ink Selector enables the machine to be inked
in four different positions across the width of the
stencil.
Ink can be applied to full width, left hand side,
right hand side and middle of a stencil by means
of the Ink Selector. The ink position in use is
indicated by the marking which appears on top of
the Ink Selector.
FITTING STENCIL
Turn Handle clockwise until Stencil Fixing Bar is
at top of machine. Lift up Stencil Fixing Bar
Cover until it locks in raised position. Fasten
Stencil with typed side towards Silk Screen, making
sure that holes in Stencil Heading fit securely
over studs of Fixing Bar.
Close Fixing Bar Cover.
Place right hand lightly on Backing Sheet, turn
Handle slowly clockwise and maintain continual
pressure over full length of Backing Sheet until the
Handle is in its top position.
Turn back Backing Sheet, if stencil is creased re-lay
it by hand - see page 7. Turn Handle clockwise
to its bottom position.
3
IJ;!?~/Ab:LJ
SWITCH INK SELECTOR INK LEVER
INK SELECTOR
CJ GJ
□ I
FULL WIDTH
LEFT HAND RIGHT HAND MIDDLE
COVER STENCIL rlXING BAR
-
-
El
BACKING SHEET

Depress Proofing Button, turn Handle slowly one
complete revolution clockwise and release Proofing
Button.
Tum Handle to its top position, tum back Backing
Sheet and check that the copy is uniformly inked.
If necessary repeat the operation.
When the copy is uniformly inked, hold bottom
edge of Backing Sheet, raise it slightly outwards
and turn the Handle counter-clockwise to its bottom
position. Remove Backing Sheet by tearing it off
along pcrf orated line.
PREPARING RECEIVING TRAY
AND FEEDBOARD
Raise Back and Side Guides of Receiving Tray and
move them fully outwards.
Slacken Side Fence Knobs and move Side Fences
fully outwards. Pull Back Fence fully to rear of
Feedboard.
Fan out paper and square it up to original state.
Then place on Fecdboard fully forward; use Feed-
board Scales to position stack in relation to subject
matter on stencil.
NOTE: Never place more paper on Feedboard
than will fit easily under Paper Height Stop.
Move Side Fences to rest lightly against paper stack.
Tighten Side Fence Knobs.
Raise Back Fence and slide it towards paper stack
until it almost touches stack and rest Paper Weight
on paper.
NOTE: For quick reloading raise Paper Weight to
top position and lay Back Fence horizontal to
Feedboard.
4
PROOFING BUTTON
fJ--
S IDE GUIDES REC
EI V IN G TRAY
BA CK G UIDE
PAP ER WEIGHT
BACK FE NCE
~
. _· 1-====illi ....... ~
,,, -L_ //;';o-;;;; ~
(:]
SIDE FENCE S KNOB

SETTING FEED UNIT
Check position of Feed Pressure Lever. For normal
use it should be at top of slot •+• . If lightweight
paper is to be fed, move Feed Pressure Lever to
bottom of slot·-•.
PRINTING FIRST COPY
Raise Feedboard by turning Feedboard Raising
Knob until paper stack contacts Paper Height Stop.
The Raising Knob is automatically disengaged when
this position is reached.
Depress Feed Lever, slowly turn Handle clockwise
and as soon as Feed mechanism begins to operate,
raise Feed Lever whilst completing clockwise turn
of Handle.
POSITIONING COPY
Examine copy for correct position. Turn Print
Height Adjuster UPWARDS to RAISE and DOWN-
WARDS to LOWER copy.
Adjust side margins by moving paper stack acr<>ss
Feedboard using the Scales as a G~i~e-
5
m
FEED PRESSURE LEVER
iD]
PAPER HEIGHT STOP FEED LEVER
SWITCH FEEDBOARO RAISING IINOB
PRINT HEI GHT ADJU ST ER

SETTING RECEIVING TRAY
Set Receiving Tray by laying edge of printed copy
against Front Guides.
Move Front and Side Guides to touch sides of copy.
Move Back Guide to touch edge of copy. If
Delivery Control Unit and Paper Control Guide
are to be used, lower Front Guide Wings.
SETTING DELIVERY CONTROL
UNIT
Depress Feed Lever, slowly tum Handle clockwise
and as soon as Feed mechanism begins to operate
raise Feed Lever and stop turning Handle when
sheet of paper reaches Delivery Control Blades.
Then depress Release Levers and position Blades
until they are slightly inside the edges of the paper.
Continue feeding sheet of paper.
SETTING QUICK-SET COUNTER
Tum Hundreds, Tens and Unit Setters to number
of copies required.
Example- Illustration shows Counter set for 321
copies.
When required number of copies have been printed
the Counter registers 'O' and automatically stops
Feed Mechanism.
PAPER CONTROL GUIDE
FRONT GUIDE WINGS FRONT GUIDES
SIDE GIJID,ES BACK GUIDE
RELEASE LEVER
HUNDREDS SETTER TENS SETTER
UNITS SETTER
6

PRINTING
COPIES
Switch
on
machine.
Turn
Speed Control CLOCK-
WISE for FAST
or
COUNTER-CLOCKWISE for
SLOW.
Depress Feed Lever
to
commence printing.
To
stop machine whilst printing raise Feed Lever.
NOTE:
To
increase density
of
copy, decrease speed.
Copy density cannot
be
increased by over-inking
machine. Only a thin film
of
ink is required
on
the Cylinder
s.
When paper
on
Feedboard is almost exhausted, the
Feed mechanism stops, the Feedboard drops
to
its
bottom position.
Then remove copies from
Receiving
Tray. Re-load
and raise Feedboard, depress Feed Lever
and
continue printing.
RE-RUNNING
USED
STENCILS
Ink
machine, and attach stencil as in Step 4,
Page
3.
Tum
.Handle until Stencil
Fixing
l3ar is in line with
Feed mechanism.
Grip
bottom
of
stencil, hold
it
upright and then
lay
it
evenly
on
Silk Screen over its entire length.
Remove any creases by lifting bottom
of
stencil
wi
th
right hand
and
re-laying stencil slowly
on
Silk
Screen.
Tum
Handle a little
at
a time and stretch
out
any creases with fingers
of
left hand.
NOTE:
DO
NOT
DEPRESS
PROOFING
BUITON.
SPE
ED
CONT
RO
L
7

COLOR CHANGING
Disconnect Silk Screen Springs, lift up Silk Screen
Bottom Bar, turn Handle counter-clockwise until
Stencil Fixing Bar is on top, raise Silk Screen
upright, lift up Stencil Fixing Bar Cover and with
a slight pull disconnect Silk Screen from Stencil
Fixing Bar.
Raise the Ink Ro11er Lever and withdraw Ink Rollers
from machine.
Open Inker Door. Raise Tube Locking Lever.
Remove Ink Tube and replace its cap.
Depress Pump Catch and withdraw Ink Gun.
Close Inker Door.,
SILK SCREEN SPRING BAR
INK ROLLER
INK ROLLER LE VE R
INK ROLLER
8

Place a Color Change Strip, wording upwards,
firmly on main bar of Color Changer. Hold the
Color Changer by its Levers and insert it between
the Cylinders at the back of the machine with the
pronged links inwards. Fold Levers fully inwards.
Turn Handle clockwise slowly for one complete
revolution. Open Levers outwards. Withdraw
Color Changer. Discard Color Change Strip and
wipe Cylinders clean with a soft cloth.
Insert new Ink Rollers and lower the Ink Roller
Lever. Turn Handle to check that Ink Rollers
rotate and oscillate.
Insert new Ink Gun and push inwards until it is
locked in position by the Pump Catch.
Raise Stencil Fixing Bar Cover.
Unroll Silk Screen. With your right hand, hold
right hand end of Silk Screen Bottom Bar, in this
position two studs on Bottom Bar will be facing
you; and with other hand hold left hand end of
Silk Screen Top Bar.
Stand behind Receiving Tray and hold Silk Screen
outstretched ·and vertically above slots in Fixing Bar.
Insert hooks of Top Bar in slots and slightly lower
Screen towards you.
Still holding Bottom Bar with right hand, lower
Screen and turn Handle slowly with left hand.
Connect Screen Springs to Fixing Bar Studs.
9
COLOR CHANGE STRIP
\.EVERS
COLOR CHANGER COLOR CHANGE STRIP
SILK SCREEN BOTTOM BAR
m SILK
SCREEN TOP BAR

FEEDING SHORT PAPER AND CARDS
(S " -7½' ' in length)
NOTE:
(i) If paper is 6½ • or wider proceed with Steps
2 and 3.
(ii) If paper is narrower than 6½
1 proceed
as
follows:
Raise left hand and right hand Feed Unit Catches
and lift Feed Unit as high as possible. Then keeping
the Catches raised, lower Feed Unit until right hand
Catch holds Feed Unit in raised position.
Press Feed Finger Clip inwards and remove Feed
Finger by pulling downwards.
Insert studs of small Feed Finger into slots of Feed
Bracket, bridge 'B' upwards; and press fully upwards.
Raise right hand Catch and lower Feed Unit.
Ensure that Catches clip over Mainshaft by pressing
Feed Unit against Mainshaft. Proceed with Steps
2 and 3.
NOTE: The removed Feed Finger can be stored in
a holder behind Inker Door.
Fitting Small Paper Guides
Fit Small Paper Guides to machine with lugs 'L'
nearest to Side Frames by engaging groove at top
of Holders with Feed Unit Support and pressing
fully inwards to engage Mainshaft.
i
, ~ &\ Place papers to be fed in center of Feedboard fully
. i, forward.
Press Guide Buttons inwards to release Guide
Rods.
.Slide Guides towards stack so that Guide Rods
lightly contact sides of paper.
Move Back Fence until it almost touches rear of
stack and lower Paper Weight.
CATCHES B FEED FINGER CLIP
L GUID E HOLDER
FEED UNIT SUPPORT
MAINSHAFT
lQ

INSTALLATION AND GUARANTEE CARD
USER'S NAME ________________________ _
ADDRESS _______________ CITY. _________ _
t.:> COUNTY __________ _
z
STATE ______ ZIP CODE ___ _
~ NATURE OF BUSINESS
l:
association D
ecclesiastical D commercial D
educational D professional D
others D
a::
0
u..
w OWNER'S NAME & ADDRESS (if different from above) ___________ _
- a::
• :r MODEL PURCHASED _______ _
SERIAL NO. _________ _
a::
~ ~ DA TE PURCHASED,__ __ _
' I-
FROM:, _______________ _
CITY _______________ _
STATE _________ _
Certified equipment satisfactorily installed and operator instructed :
INSTALLER(•'•~""' I ... I _u_s_E_R_(_s•_ · ,_na-t-ur_e_) ---------~
Please send guarantee to owner
CLOSING MACHINE
Depress Switch and disconnect power plug from
electrical outlet.
Depress Feedboard Drop Lever until Feedboard is
fully lowered and remove paper. Slide Back Fence
fully forward, below Feed Unit, lower Paper Weight
and lay Back Fence backwards horizontal to Feed-
board.
Slacken Side Fence Knobs and move Side Fences
slightly inwards.
Turn Handle clockwise until Stencil Fixing Bar
is at top of machine. Lift up Stencil Fixing Bar
Cover, detach Stencil Heading from studs and
release Cover. Turn Handle clockwise and remove
Stencil.
Turn Handle to its bottom position and fold inwards.
Remove any papers from Receiving Tray, fold
Back and Side Guides inwards and close up Receiving·
Tray and Feedboard.
IGC
ST ENCIL flXiNG BAR COVER
. .
11

BUSINESS REPLY MAIL
No postage stamp necessary if mailed in the United States
POSTAGE WILL BE PAID BY:
GESTETNER CORPORATION
GESTETNER PARK
YONKERS, NEW YORK 10703
FIRST CLASS
PERMIT NO. 1018
YONKERS. N.Y.
SUMMARY OF INITIAL OPERATING
PROCEDURE
Lower Feedboard and Receiving Tray.
SUMMARY OF OPERATING PROCEDURE
TO CONTINUE OPERATING AT THE
END OF A RUN
Connect tube of ink and apply ink to Silk Screen.
Fit Stencil. Obtain proof copy on Backing Sheet.
Remove Backing Sheet.
Load Feedboard with paper.
Switch on machine, raise Feedboard and print first
copy.
Set top, bottom and side margins of copy.
Set Receiving Tray Guides.
Set Counter.
Commence duplicating.
12
Remove copies from Receiving Tray.
Re-load and raise Feedboard.
Switch on machine and depress Feed Lever.

GESTETNER
ReproCenter
ij
.1
.1,
-· .....
511"
I
le
1\
h,
tJ
lg
& u
HAVE
you
SENT
IN
YOUR
GUARANTEE
REPL
y
PAID
CARD
ON
PAGE
ELEVEN
'
13

WORKING COMPANIONS TO YOUR GESTETHER DUPLICATOR
Gestefax 456
Stencil Scanner
Gestetner G Folder
GESTETNER INKS ARE AVAILABLE IN
NINETEEN COLORS
Black • Blue-Congressional • Blue-Royal
Blue-Standard
Brown • Burgu n dy
Crimson Fawn
Gold Grap e
Gray-Charcoal
Green-Emerald ·
Red Violet
Gray-Silver
Green-Olive • Orange
White Yellow
Gestetner 85 Collator