enlarger - Pacific Rim Camera

Model II
Instruction Manual
Pag e
Assembling the enlarger
Bulb , replacement
Cleaning -
16, 17
Ground connection
9, 13
Lens -
c leaning
Cover for dust protection
Copying -
Pag e
Focusing -
Light diffuser
Film to use
Light switch -
With other cameras
13, 14
onl off
22, 23
Mirror for big enlargements
13, 14
Movie film -
Dimmer switch
10. 13
Negative Masks -
Enlarging, procedure
Film -
12, 18
Electrical connection -
how to insert
for copying
.5, 6, 9
. 5, 7, 9
13 , 14
how to insert
Red filter
Rheostat for DC current
Scratched negatives
Switches -
onl off
Voltage, adjustement for
10, 12
10, 13
10, 15
13, 14
10, 12
10, 13
5, 6,
The MINOX enlarger
is designed especially for enlarging MINOX (8 x 11 mm)
negatives . Its lens and lighting system have been developed for the particular requirements of ultra-miniature
photography .
The f/3 .5 lens is a coated 4'element anastigmat of 15 mm
focal lenght. The 6-volt , 6 ampere enlarging lamp in
combination with the highly efficient light condensor
system produces very bright illumination resulting in
relatively short exposure times.
The AC model (standard in the U. S. A.) is supplied with
a transformer built into the base which can be set for
110 and 220 volts. The DC model operates through a
separate rheostat.
The MINOX enlarger is of very sturdy construction to
eliminate the possibility of vibration
and to assure
utmost steadiness of the enlarger head during exposure.
Assembling the MINOX enlarger.
To protect the MINOX enlarger during trans portation ,
its component parts are packed in separate compartments of the shipping container. To assemble the' enlarger, you need only a medium and a smaller size screw
driver in addition to the key wrench which is supplied
TO ATTACH COLUMN TO BASE (1) Detach the protective shield from the underside of
the base after loosening the three retain ing screws;
Base board
(2) Remove the ring nut from the thread ed portion of
the column;
(3) Insert the threaded portion of the column through
the opening in the base so that the guide rack alo'1g
the column faces towards the front;
(4) Th e exact pos iti oning of t he co lumn is determined by a pin-screw located at the
back of th e base which engages a dimple in the co lumn to pre vent its turn ing .
While screwi ng in the p in-screw, turn the column lightly unt il the pin-screw
engages th e d imp le;
(5) Ti ghten the pin-screw;
(6) Turn
w i th
e base on i ts side ; atta ched t:,e rin g nut to the column ; tighten the ring
ey wrench.
Cable connection in the base.
(See illustration on .page 6)
Can ec
e two (b lue) wi res protruding from the column to the double terminals
Adjustement for line voltage.
The line voltage f o r w hich the enlarger has been adjusted at the factory is indicated
on a specia l t ag attached to the column. (Enlargers sold in the U . S . A . are pre-set
fo r 110 vo lt s.) El sewhere -
unless other setting has been especially ordered -
enl argers are adj usted for 220 volts . •
Voltage adjustment
on AC model.
C a ut i on : Enlarger must be disconnected from the power line while
adjustment is being made. A wiring
diagram is shown on the protective
shield of the base .
To change adjustment from 220 to
110 volts , detach the wi re from the
220 volt termina l (3rd from left in
illustration) of the tra nsformer, and
attach it to the 110 volt terminal
(2 nd from left).
Underside of the base. Enlarger is adiusted for 110 volts. Connections
from column to base are shown ot right center.
Wi res attached to the 5th and 7th
terminal connect to the dimmer
switch (4.3 v) - see page 13 - and
the 'bright' switch (6.5 v). These
connections should not be changed.
As there is a voltage dro p of 0,5
volts in the circuit , the enlarger
lamp operates at its rated 6 volts.
N ot e : Re-attach protective shi e ld
under the base!
Fro nt
Ih e ostot
DC model:
For use w ith DC curren t, a rheos a ins ead of the builtin transformer must be connec ed between the power
line and the enlarger ; the rheos a
justable for voltages fro m 110 to 2
connec ti ng
s own here is advol ts .
rheosta . rna e sure that th e
black banana plug (beh ind the small round win dow)
is in the center (0) socket, and
e red p lug in the
socket corresponding to your line
oltage. Otherwise,
remove the wi ndow and make
e necessary switch .
I llumi nation brightness can be regula ed with the large
control knob from 0 (dimmes)
00 (bri ghtest).
Th e back of the rhe ostat provides p lugs for the enlarger cord (' Lampe ') and f or connecllon to the power
outlet ('Netz'). To ground the equipment, connect the
ground plug with a water pipe or other su i table ground.
Bock of rheostat
Attaching the baseboard:
Remove four screws f rom top of t he base. Place
baseboard in pos ition on the base, inse rt screws
and t ighten. Th e r ubber cove ri ng of t he baseboard is im pervio us to chemicals .
Mounting the enlarger head :
Slide t he s leeve of the enla rge r head onto the
column while pressi ng the l ock i ng lever towards
the co lumn (see i llustration).
Insert the plug of the enlarger head cab le i n the socket at the top of the column. The lamp is now con nected
to the c ircuit and your enlarger i s ready for operation.
Connection to power line :
Use only the triple cables with grounding connection supplied with your MINOX
enlarger. A similar cable must be used for the rheostat (DC; only) .
For added safety, connect the grounding lug at the back of the enlarger base (see
illustration page 13) to a waterpipe or other suitab le 'ground' .
Always disconnect the power line before making electrical adjustments on the
Getting ready for enlarging.
Place the paper easel on the baseboard. Its white surface serves for focusing the negative.
Pressure on the pear-shaped button switch turns on the enlarging lamp. The dimmer switch at the right of tne
base near the column reduces the brightness of the lamp considerably. As the dim light is used only for
special purposes (see page 13), the switch should normally be turned to BRIGHT ("hell").
The negative carrier consists of two highly polished metal masks which hold the negative in the same spherical
shape as the pressure plate of the MINOX camera. To insert a film strip, raise the upper mask by pushing lhe
pressure release lever UP as shown on page 11. Holding the negative strip by its edges, place it in the film
channel with the emulsion side down. With the lamp turned on, adjust the negative so that it is evenly masked,
filling the entire illuminated area visible on the easel. Lock the negative in position by turning the pressure
release lever DOWN.
Note: Always move the pressure lever UP when shifting the film from one
to the next!
Operate the pressure
release lever with the
right hand while the left
inse lts and positions the
film strip .
The size of the enlargement is determined by the distance between the enlarger head and the easel. The
higher the head, the bigger the enlargement; the lower , the smaller. To raise or lower the enlarger head,
grasp the sleeve of the head while pressing the chromed lever towards the column as shown on page 8: release
the lever to lock the head at any elevation. To obtain enlargements of more than
9'12 x 12" , an optical mirror attachment may be used (see page 19). The 'feeler
,button' at the back of the head sleeve "stops" the head fo r enlargements of
3 x 4'/,", 3'12 x 4'/.", post card size, and 5x 7". Th ese stops requ ire the use of an
easel of equal height.
The MINOX enlarger is fitted with a 15 mm coated 4-e lement lens of critical
correction; in combination with the spherical film carrier, the lens yields outstanding sharpness over the entire picture area.
The lens is focused by turning its lower knurled ring (see illustration on page 3)
until the image on the easel surface is perfectly sharp . The use of a magnifier is
recommended to assure best results .
After focusing, turn off the enlarger lamp by pressing the
line switch button.
Place the enlarging paper , emulsion side up , under the masking frame of the
en larging easel, and make the exposure by using the l ine switch button.
Your MINOX dealer offers a variety of pleasing paper surfaces, and he can
advise you on the selection of the proper contrast grades , and developing methods,
to give you finest results .
Dimmer switch.
The dimmer switch is located near the column on
the enlarger base (see illustration). The dimmed
lamp requires an 8 x exposure increase . Such'
extended exposure is desirab le to permit ' dodging' ,
i. e. holding back some portions of the enlargement while giving longer exposure to others. This
control would not be possible at the short exposures
for small en largements usually associated w ith
'bright' i llumin ati on.
Scratched negatives.
The condensed illumination of the MINOX enlarger
which assures utmost sharpness , naturally reveals
scratches or other defects in a negative , which
would require extensive spotting or retouching of
the enlargement. Such defects can be minimized or
completely e liminated by using the bu ilt- in li ght
diffuser of the enlarger.
The rear bose carries the dimmer switch (top); plug for
the power line (left) an auxiliary grounding lug (at
lower right of illustration),
beam, turn the control lever to horizontal position (see arrow in illustration
below). Diffused light requires an exposure increase of 6 x. To 'turn off' the
diffuser, raise control lever to vertical
from flawless negatives which require
no remedial measures during enlarging!
Dust and scratches can easi Iy be avoided
if film strips are inserted into the transparent MINOX negative wallets immediately after drying.
Enlarging individual frames from movie films.
The following f il m carriers are available for the MINOX enlarger:
Film size
Frame size
16 mm
7.5 x 10.5 mm
Film Carri e r 16 mm
8 mm
3.6 x 4.8 mm
Film Carrier 8 mm
and lower mask
To change film carrier, raise pressure release lever, pu ll film carrier forward and replace w ith required film
carrier (see upper illustration on page 14) .
To change the lower mask , remove the l ens by turning its uppe r knurled ring to the left and pulling it down.
The l ower negative mask which is attached to the upper part of the l ens mount, can be un-screwed and
replaced by a different mask. IMPORTANT: When re-inserting the lens, make sur that the small cut-out at
t he edge of t he mask matches the pin in the bayonet mount wh ich assures accurate positioning of the lens
and mask.
For 16 mm film (7 .5 x 10.5 mm) the regu l ar l ower mask for the M IN OX size is used , but the lens w ith mask
must be removed and re-inserted after being turned 900 (one quarter turn) because the 16 mm frame the MINOX frame -
cut-outs to mach the guide pin .
is located across the film wid th . To permit t he 90 0 adjustment , the MINOX mask has two
Cleaning the lens and condensors.
The en larg ing lens and condensor lenses must be kept clean. as dust and smudges in the optica l system
impa ir enlarger performance .
To clean the lens , remove it from the enlarger as described on page 15; un-screw the mask from the lens
mount for better access to the lens surface . Use only soft l intfree cotton c loth to clean th e exposed lens
The upper condensor lens is removed from the en larger head as follows : Press in the locking button at the
back of the head (see arrow A on page 17), and l ift cover off from back to front as shown in the illustration
on page 17. Th e metal disk contai ning the condensor lens can be lifted ou t after a sl ig ht turn to the left ;
clean with lintfree cotton cloth . Re-install and turn disk to the right. To replace the cover on the head , first
enage the locating pin at the front of th e head, then c lose the cover until the locking button (A) snaps closed .
The lower condensor lens (see arrow B on next page) can easily be c leaned after the enlarg er head is t il ted back.
Replacing the bulb.
The 6 volt 6 ampere bulb (see illustration) , in norma l use , has a
life of 50 hours. It is advisible to obtain a replacement bulb
ahead of time so that enlarging operations may be carried on
without undue interruptipn when ,the life of a lamp is exhausted .
Enlargers with serial number below 2390 use a tubular 6 volt
5 ampere bulb. It is best to give your MINOX dealer the serial
number of your enlarger when you order a replacement bulb .
The serial number is engraved on the front of the enlarger head
sleeve behind the head hinge; it will also be found on the
sma ll plate at the back of the enlarger base .
To replace a burned-out bulb , remove the cover of the enlarge r
head as described under " Cleaning " on page 16. The bulb has
a bayonet mount and can be removed after a slight turn to the
left. Insert the new bulb so that the filament pOints down , i. e .
towards the baseboard .
To rep lace the cover on the enlarger head , first engage the
locating pin at the front of the head , then close the cover
until the locking button (A) snaps closed . (See illustration at
right) .
Electronic enlarging easels
1. The MINOX enlarger can also be used in
combination with electron ic en larging easels
which measure and time the exposure auto-
matically. In case an Agfa Variomat is used
the enlarger head has to be mounted further
apart from the column, and therefore an inset
has to be installed between enlarger head
and column.
2. The inset for t he Variomat fits between the
enlarger head and head sleeve and can be
easi Iy fastened with a few screws.
Addition to Instructions for use
of M I NOX enlarger model "
The enlargers of the latest design (from
No. 11001) have a detachable lens holder.
The method for changing masks and cleaning the lens as described on pp . 15 and 16
(Figs 9 and 12) has been considerably
After releasing the pressure in the film
channel , press the spring-loaded key Ca' on
the left-hand side of the picture) between
the enlarger head and the column . You can
now pullout the lens holder (b) in the direction of the arrow. Assembly is even simpler:
just insert the edge into the slot above the
series number, press the key, and push the
lens holder back until it clicks in place.
Mi;lSks can be exchanged and cleaned by removing the condenser unit from the lens
holder. Take the condenser unit between the
fingers of one hand and the film gUide in the
other hand (see Fig . 2) . Press both parts
together, at the same time slightly turning
the condenser unit. The two components will
then come apart (see Fig. 3) . It is now easy
to clean the condenser lenses. The top and
bottom pressure masks can be lifted from
the lens holder with the index finger. When
assembling, make sure that the polished
surfaces face each other.
Interchangeable masks
In two parts; mask apertures
parallel to the film path
(MINOX format)
S x 11 mm .
After turning both MINOX masks 90 0
(one quarter turn) they may be used
also for enlarging single frames of
16mm cine film
Smmcinefilm : 2 parts, each 3.6x 4.Smm.
E 419
XI /64
Practical accessories.
The optical mirror attachment (right) is used whenever en largements of
more than 9'/' x 12" are desired. The mirror is attached at a 45° angle below
the enlarging lens, thus projecting the image horizontally . The enlarging
paper may be tacked to a wall or other suitable ve rtical surface.
For horizontal enlargement, the film must be inserted in the film channel
emulsion side up, since the mirror reverses the sides .
The red filter attachment (right) permits checking focus and easel position
with the enlarging paper in place.
Copying attachment
Because it can readily be focus ed dow n to 8 inches
without supplementary lenses or other attachments
ing drawings, etchinge and other illustrati ons , for
the documentation of letters and lega l docume nts.
In conjunction with the MINOX copying attach ment,
exception ally
rigid and convenient copying stand .
(See illustration) .
To convert the enlarger for copying, slide the head
sleeve up the column until it can be turned 180° ,
then slide it down ; the locking lever will, as in
enlarging , hold the sleeve at any desired level.
Pull the cover CA' in illustration at right) fro m t he
mounting socket which accepts the copying attachment as shown in upper right on page 21 .
The MINOX enlarger is readily conver/ed into an
efficieQt and rigid copying stand.
Slide the ,Ieeve to the top of the column
and turn it 180 °; pull out cover plate A
The MINOX camera' and copying attachment installed .
from mounting socket.
Mount the copying attachment, with the small milled screw facing up, and attach it firmly by tightening the
large milled disk.
Detach the chain from the M INOX camera and slide the camera. lens down , into the U-shaped channel of the
copying attchment all the way; fi x it in place by turning the small milled screw on the attachment. Screw the
cable release into the release socket of the attachment. and -
the copying stand is readyl
Place the document, book, or drawing that you want to copy, on the baseboard . While looking into the camera
viewfinder, move the copying unit up or down until the subject almost fills the luminous frame of the fin der.
(Allow the width of the luminous frame-line on all sides).
Hang the measuring chain - by the wire loop which
holds the camera connecting lock - on the small
lug of the copying attachment, as shown at left.
Using the beads of the chain, measure the distance
to the subject. (Remember: beads are placed at
8" - 10" - 12" - 18"). Set the measured distance
on the distance sca le of the camera. Because the
viewfinder moves with the distance setting to compensate for parallax, you must check the position
of the subject in the viewfinder and, if necessary,
move the sheet or book slightly to make sure that
it is within the luminous frame .
Now, a squeeze of the cable release will complete
the copying operation.
If you copy a number of documents of identical
size, the procedure is much simpler because you
need to measure and set the distance only once.
Cameras other than the MINOX can also be used .
with the MINOX copying attachment. Instead of a
MINOX cameras, the adapter insert is installed and
locked in the attachment. The insert carries two
tripod screws so that a camera may be attached at
the front or side. (See illustration on page 23).
The correct distance setting is obtoined with the measuring chain, of the N\INOX camera.
Photographs, paintings, and other matter containing halftones, can best be copied with the regular ASA 25
(13 or 14 DIN) MINOX film.
Line drawings, printed, typed , or handwritten letters , documents , etc. should preferably be copied wi th
MINOX ASA 5 MICRO GRAIN ORTHO FILM . This special film must be developed to high contrast; developers
for normal films - including MINOX ultra-fine grain developer - cannot be used . Your MINOX dealer can advise
you about this, as about all other phases of MINOX photography·.
The adopter insert permits using other
than MINOX cameros with the MINOX
copying attachment.
Ask your dealer about these other MINOX Accessories:
For Picture·Taki ng ; MINOX BIC Flash Units - MINOX Binocular Clamp - M IN OX Right Angle Fin der
M irror - MINOX Reflex Viewfinder - MINOX Fi lter Kits - MINOX Pocket Tripod - M I OX Camera
Clamp - MINOX Adjustable Folding Copying Stand - MI NOX Belt Cases - MINOX Films lor Black
and White Prints , Color Prints and Co lor Slides.
For Developi ng ; M INOX Dayl ight·Loading Developing Tank MINOX Negative Wa ll ets - M INOX Fi lm Viewer.
M INOX Ul tra·fine grain Deve loper -
For Projection; M IN OX Minomat Automatic Proj ector - MINOX Sl ide Projector Mode l 30 Slide Frames 30x30 mm - MINOX Slide Safe - MINOX Transpa rency Viewer·Cutter.
Optical and Precision mechanical Works
63 G I E SSE N 1 • Germany· Post Office Box 137
419 e
Specification subject to change without notice.
Prin ted in Germany
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