Polly Developing Tanks Instruction Book

7/27/2019 Polly Developing Tanks Instruction Book

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THE NAMES OF THE

The illustration shows the various part

MIN TANK. Reading downwards are the

film holder or spool, the lid and the stirr

the necessary agitation to the film in th

st ir ri ng rod can be used to house a thermomthe names used in referring to the parts

booklet.

The Polly-Max tank is the same as the

that it is bigger and can take more film or

are made of polystyrenea more recent a

plastic for developing tanks than the older

all , glass-clear spiral flanges of the fil m ho

thus making colour film development spe

But though new materials and new features

the main features of Polly tanks are based o

experience of years of tank manufacture

Neville Brown.

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ADJUSTING THE SThe spiral film holders of Polly tanks are

be set for various films as follows:

Pol ly -Min Po l l

16 mm.

35 mm . 35 mm.

No . 127 or Vest Pocket (4 cm.) No . l2 7o r

No. 116 (

No. 120 (6 cm.) No. 120

The Polly-Min will take a 20-exposure

film but not a 36-exposure length.

The Polly-Max will take 6 ft. of 16 mm

length of 35 mm. film or two 20-exposure

two No. 127 or two No. 120, the films beinth e othe r. A special groo ve stop preve

lapping. (See next page).

Set the spiral to the width require

stainless steel spring away from the ce

to p flange to the correct posi tion . Relea

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will then click into one of the notches on the central tube.

This locks the top flange in position so that there is no

possibility of it slipping out of adjustment when being

handled in the dark. The to p flange wi ll still be free to rotate

about 3/4" in either direction. This is to facilitate loading.

LOADING THE FILMThis must be carried out in the dark. Remove the lid of

the tank and dra w ou t the spiral fil m holder . (It should be

noted here that the spiral film holder must be perfectly dry

before insert ing a fi lm . If a fi lm has just been developed in

the tank wipe every groove of the holder with a dry cloth,

otherwise the film may stick when being loaded.) W a r n i n g :

Polystyrene, of whic h Polly tanks are made, wi ll m elt if

subjected to high temperatur es. Do not, the re for e, dry in

an oven or before a hot fi re ! Un ro ll the wra pping paper of

th e fil m un ti l you come to th e fi lm itself. Some films have

a small piece of paper attached to th e en d; tea r this off and

throw it away.

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Loading wi ll be easier if the curled e

straightened by bending it backwards.

Hold the spiral film holder in the left h

that is, wi th the ratchet centre point ing u

end of the film into the front groove of t

it in by pushing the film forward . It wi ll tr

direction.

ROTO-FE E D Once the film has bee

outer groove until it is half way round th

should be changed to that shown lower

the two flanges backwards and forw

applying light pressure on the edge of t

thumb alternatively so as to stop the film sThis is an extr emel y simple ope rati on.

provided, and the knack will soon be ac

tha t the ou ter end of the film is fed a ful

mouth of the groove in both top and bott

spiral, othe rwise the film may come out d

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LOADING TWO FILMS IN THEPOLLY-MAX TANK

It will be noticed that in the flanges of the Polly-Max tank

the re is a butt on . This is a groove stop (which is moulded

in nylon) and which can be pushed and pulled in and out.

When it is out the groove is clear but when it is pushed homethe groove in the spiral on the inner side of the flange is

stopped.

When loading one No. 20, No. 27 or one 20-exposure

35 mm. film, there is no need to do anything about the stops.

The grooves are long enough to house the whole length of

film before the stops are reached.

Wh en loading wit h 16 mm. fil m, 36-exposures of 35 mm.

film or No . 16 fi lm , pull the stops out ti ll they clear the

grooves in both the top and bott om flange. They wi ll not,

in this position, foul the tank bottom or lid, nor will they

obstruct the film.

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When it is desired to develop two 20-ex

two No. 27 or two No. 20 films at once, set

the Out position, feed in the first film righ

th at it has passed th e stops. Then push

In position and feed in the second fi lm .

the fir st because of th e stops. Whe n loadin

35 mm. films it is necessary to cut off thofilm which have been used to secure the f

and camera spools. Those po rt ions do

carry an exposure.

Note .I t wi l l be observed tha t the f

rig ht int o th e centr e by th e Roto-Feed

cases it will be found possible to work it gripping it lightly as shown lower left and

wi th the other hand. In oth er cases the

base, backing or the curl which the film

make it difficult to slide right in to the ce

stops. In such cases the fol low ing method is

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Push the film into the outer grooves until it is half way

rou nd the holder. Then arch it as shown (top) and

rotate the holder anti-clockwise with the left hand, keeping

the main body of the film rolled in the palm of the right hand.

The result is that the first six inches of the film instead of

being in the outer grooves, is worked into the innermost

groove . Put ting a finger on these fir st six inches now in theinnermost groove to stop them slipping back, rotate the

spiral in a clockwise dir ect ion (l ower) . It wi ll be found

that if the film is kept arched the whole length can be wound

on like windi ng cotto n on a reel . If the film already in the

centre is not allowed to slip back, it will be found that the

whole length can be wound on, occupying the grooves nearest

the centre and leaving the grooves outside the stop free to

accept the second film.

As soon as the fir st film is past the stops, they must be

pushed down to the IN position and the second film can be

fed in by the ordinary Roto Feed method.

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CLOSING THE TWhen the film has been fed right

grooves of the holder or spool, place it

ratchet centre downwards and the flang

spring upwards. It wi ll be found tha

rotated in a clockwise direction but no

is stopped by the ra tchet. The ratchet

down movement which secures even

Put on the lid, push it downwards a

turn it in a clockwise direction so as to

locks all round the top rim of the body

The tank can now be taken into the

TEMPERATURE ANSTIRRING ROIt will be noted that the stirring rod is

top half is clear. If a " Polly " (Re

obtained from the dealer who supplied

found that it will fit the Polly Tank's

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the scale is so positioned that it can be read whilst the

st ir ri ng rod is in positio n in th e tank (see page 13). Af te r

use and between baths the stirring rod should be unscrewed

and the thermometer removed for thorough washing of both

parts. This is parti cularl y impo rt ant in the case of colour.

DEVELOPING THE FILMHaving selected and prepared the developing solution

according to the instructions given with the developer (see

also page 23), measure out the quantity required for the size

of fi lm being developed. (For size I2 0- I0. 5 oz. or 300 c.c. ;

127-8 oz. or 230 c.c. ; 35 mm.-6.5 oz. or 185 c.c. as engraved

on base of tank.)

The exact temperature of the developer must now be

taken, the most suitable temperature being between 65and 70 F. This is very imp or ta nt , as it controls the dura tion

of development.

Having noted the time by your watch or dark-room clock,

pour the developer with a continuous flow and as quickly

as possible through the hole in the centre of the lid, and insert

th e st ir ri ng ro d, hexagonal end fir st. 11


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AGITATION

Thorough and correct agitation of th

imp ort ant in any spiral developing tank .

only a limited amount of developing so

coils of film and if this is not kept on th

irregular development may occur througof the developer.

On the other hand, continuous move

must also be avoided since this would

over-development where the turbulence

This tank is provided with a highly

for agitating the solutions in that the

moves up and do wn as wel l as round a

and down movement forces the develope

at either end of the film holder and resu

circulation.

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Immediately after pouring the developer into the tank,

twist the stirring rod very briskly in a clockwise direction

for ten seconds. This brisk tu rn in g, coupled wi th the

automatic up and down " j e r k s " produced by the ratchet

cam, dislodges any bubbles whi ch may otherwi se cling to the

surface of the film.

Brisk agita tion should be repeated for 10 seconds every

minute during development.

While this method of agitation has been thoroughly tested

and has been found to give excellent results, the user may,

by experiment, find another technique that is equally satis

factory, but he must standardise and use the same technique

for subsequent films of the same variety, in the same deve

lopers at the same temperature.When using a developer that only requires a short deve

loping time or when processing a film at higher temperatures

than 75 Fahrenheit , agitate mor e freque ntl y or even

continually but note the actual frequency of agitation for

future reference since such frequency is an important factor

in the rate of development. 13

FIXING THE FIL


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FIXING THE FIL

After the necessary time for developme

solution (if it is required for further use)

the measure. Und er no circumstances

removed at this stage.

Next, the film should be given a brief emptying the tank twi ce wi th clean wate

same quantity of fixing solution as you

note its tem per atu re. The fixer sho

results, be used at the same temperature

Pour the fixing solutio n i nto the tank

fro m time to time dur ing the next 10 or

end of this time pour the solutio n from thstored in a well-stoppered bottle for fu

Not more than two or three minutes at

be allowed to elapse between pouring out

pouring the fixer.)

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The developed and fixed film should now be washed

tho rou gh ly. Washin g is just as importa nt a process as

developing and fixi ng. The developer has the propert y of

blackening those grains of silver that were struck by light

when the pictu re was taken. The hypo (fixer) renders the

rest of the silver grains soluble in water, but does not affect

the blackened grains. At least 30 minutes thoro ugh washing

is necessary in order to remove every trace of fixer and all

the soluble silver fro m the fi lm . Failure to wash the film

completely free from hypo will seriously impair the keeping

properties of the negative and make such processes as

intensification and reduction difficultif not impossible.

The spiral film holder should, therefore, be removed from

the tank body and immersed in running water.

If running water is not available the tank should be filled

with clean water, and emptied about ten times, allowing each

change of water to remain in the tank for at least three

minutes.

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FILM WASHERA Polly Ou tf it can be obtained from

supplied the Polly Tank. This is diagramm

on the left.

It will be seen that the Polly Washer

thorough washing by forcing the wasthrough the fi lm from bottom to top of

If eight drops of Johnson 326, the wettin

to the final tank-full of washing water the

dry more rapidly. Af te r washing th e fi

tank and the spiral film holder can be re

After washing the film, but before dry

practice to pass it through an Anti-Scratch the film surface being damaged during d

To do this fill the tank with dilute Joh

solu tio n using the same qua nt ity as deve

five minutes, after which the film should be

for three minutes before drying.

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REMOVING THE FILMThere are two ways of removing the film from the spiral.

(Do not, by the way, attempt to pull it out from the slot

int o whic h it was loaded. Being we t it wi ll stick to the

grooves and will require considerable force to remove in this

manner and will inevitably be damaged.)

Give the end of the film a slight outward curve (see illustra

ti on ). This lifts the end of the fil m ou t of its groov e. By

allowing the spiral to revolve between finger and thumb the

film can then be rapidly unrolled.

The second method is to stand the spiral (right way up)

and, holding the lower section down, to remove the upper

part . The fi lm wil l remain standing in the grooves and can

be lifted out and clipped up to dry.In either case it is good practice to carry the operation out

while holding the spiral under water as the film is then less

likely to get out of control and get scratched.

Attach a second clip to the lower end of the film to prevent

it curling and hang in a room that is fairly warm and as free

f rom dust as possible. 17

PREPARING FOR THE N


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PREPARING FOR THE N

After use, the tank should be thorou

carefully dried. This lat ter point is imp

wise the next film may stick in the guides

holder when being loaded, but again reme

heat.

When washing the tank it is most imp

that all traces of hypo fixing solution hav

fr om the li d. This could easily be overl oo

removed to facilitate washing the fi lm . Uns

of crystallized hypo in t he ligh t-traps , co

taminate a 'bl ack -an d-w hit e' developer a

havoc with a colour film.

Although the pictures used to illustrate

show the "Polly-min" Tank in use, the

procedure are exactly the same for the " P

same warning regarding exposure to exc

applies.

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A D O X K.B . I4 35 mm (1), K.B.I7 35 mm (2),K.B.2I 35 mm (3), R.I7 RF(2), R.2I RF(5).

AGFAIsopan 17/10 DIN RF (4), Isopan I.S.S.RF (5), Isopan F 35 mm (3).

CORONET Corochrome RF (4), 888 RF (4).

D U F A Y O r t h o RF (4), Pan RF (4) , Super 100

RF (5), Super 50 35 mm (5).

FERRANIAPanchromatica F.2 35 mm (1),Super Pancro 32 RF (5), Super Pancro 17/10DIN RF (4), Super Pancro P.3 35 mm (2), SuperPancro S.2 35 mm (5), Ultrachromatica RF (4).

GEVAERTGevachromeand 35 mm (3), GevapaGevapan 33 RF and 35

ILFORDF.P.3 RFand 335 mm (6), Pan F. 35 mm

KODAKPanatomic X RRF and 35 mm (5), Sup35 mm (7), Verichrome

LUMIEREAltipan RF (

mm (6), Super Lumichr

PERUTZPergrano 35and 35 mm (4), PeromniPerpantic RF and 35 mm

S T A N D A R D O r t h o RF

FILM DEVELOPING GROUPS

Determine th e developing group of the film in use fr om the list below pp. 20 and 21 read off the cor rect development time according to the develope

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TIME AND

TEMPERATURE TABL

Azol (I part with 24 parts water) orUniversal M.Q. (I part with 15 parts wat

Developer 468 (Stock solution with 10 parts


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Johnson Fine Grain Developer


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S E C O N D E X P O S U R E O F C O L O

When processing reversal colour filmssecond exposure to light following first carried out without removing the filThere is thus no danger of the film beinhandled in a wet condition and the prothe film into the spiral ceases to exist.

To make the second exposure, remowithdraw the holder with the film in po

Turn this over and over and round from a 100-watt pearl bulb or 2ft. fromfor about 2 minutes (or approximately recommended in the manufacture rs' not grip the holder always in the same pfrom the hand may prevent some parbeing fully exposed.

After exposure, replace the film-holdecontinue processing according to the dthe developing chemicals.

It is not normally necessary to replace providing processing is carried out in fluorescent or daylight).

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DEVELOP YOUR FILMS WITH JOHNSON CHEM


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DEVELOP YOUR FILMS WITH JOHNSON CHEMOne of the best all-round developers to use for your films in the Polly Tanks

is JO HNS ON U NIT OL . One ounce of the concentrated solution is dilutedwith sufficient water to fill the tank (or to cover the spiral flanges when smallfilms are being deve loped), used once and then discarded. UN IT OL gives clean,bri gh t, fine-grain negatives of excellent enlarging quality . JO HN SO N FINEGR AI N, a developer in powder fo rm , is sold in tins to make 20 oz. The solu tion

has excellent keeping qualities and can be used to process 5 or 6 size 120 rollfilms. For ext ra fine grai n, on 35 mm. films parti cula rly, JO HN SO NMERITOL-METOL is recommended.

A quickly prepared fixing solution can be made up by dissolving 2 ozs. ofJO HN SO N ACID HYPO FIXING powde r in 15ozs. of wate r. If a concentratedsolution is preferred, JOHNSON FIXSOL is available in 20 oz. (570 c.c.) bottles.FIXSOL also contains a hardener . Yo ur dealer stocks a ful l range of JO HN SO NCHEMICALS.

Patents, Trade Marks and Registered Designs.Number s of Registered Designs, Patents, Trade Marks or applications pendingKingdom and foreign countri es in respect of the Polly range of tanks and abe obtained on application to Neville Brown & Co. Ltd., 77, Newman Street

POLLY TANKS ARE DISTRIBUTED JOINTLY BY JOHNSONS OF HA ND NEVILLE BROWN AND CO. LTD.

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Documents

Polly Developing Tanks Instruction Book