Black and White Paper Guide
 


FOMA 
FOMABROM 

BLACK-AND-WHITE ENLARGEMENT PAPER ON A BARYTA PAPER BASE 

General 
FOMABROM is universal high sensitive black-and-white enlarging paper on baryta coated double weight paper base. It is made of silver chlorobromide emulsion with neutral to mildly warm image tone. The paper is noted for its rich half-tone scale from shiny white to saturated black. Its high speed makes possible to use larger lens diaph ragm values even at enlarging on large sheet sizes. The paper shows the great developing latitude. It is available in glossy, semi-matt, matt, fine grained lustre and silk surfaces and contrast range from soft to hard (1 - 4) and in all current sizes. 

Safelight 
The paper can be handled for longer periode under red safelight or under sodium vapour lamp. Safelight fitted with yellow-green or orange filters is also suitable. However for standard darkroom illumination Kodak OC, Osram Duka 50, Agfa G 7, Durst Sanat or Ilford 902 filters can be used. 

Exposure 
FOMABROM is suitable for exposure in all types of enlar gers and printers fitted with tungsten or tungsten-halogen lamps or common cold light sources. Other light sources can be used, but tests to determine the optimum exposure must be done. 

Processing 
FOMABROM can be processed in trays or in processors equipped for paper bases. Various common developers can be used. For neutral image tone FOMATOL LON, FOMATOL P, NEUTOL LIQUID NE, PQ UNIVERSAL, DEKTOL etc. are recommended. Developers for multigra de papers can be also used. 

Processing procedure 
 
Process 
sequence
Process bath 
 
Time 
 
Temp. 
(C)
Developer FOMATOL LQN 1+7 90 -120s 20
Stop bath 2 % acetic acid 20 - 30 s 20
Fixer FOMAFIX 1+7 3 min 20
Acidic fixing bath 5 min 20
Wash 
 
Running water 
 
30 min 
45 min
above 12 
bellow 12
Drying: The papers are suitable for hot drying. FOMA BROM glossy paper can also be dried on drums and in glazing presses. 

Image Tones  
The silver chlorobromide emulsion of FOMABROM renders neutral to warm black image, when developed in standard developers. Image tones can be varied with use of appropriate developers. 
Amidol in the developer gives deeper blue- black tones, metol alone produces neutral black to bluish-black and hydroquinone used alone in restrained developer tends to give warmer black images. 

Chemical Toning 
Toning processes convert the black image to a different 
colour. There are two toning methods, direct and indirect. 
Direct toning converts the silver image to a different silver 
compound in one operation. The indirect one involves 
bleaching first. A second solution creates a new image 
consisting of a silver compound with a different colour. 
FOMABROM is suitable for both direct and indirect 
methods. For the standard process the indirect method 
is recommended. The sepia tone is very popular. FOMA- 
TONER SEPIA set is useful for this purpose. Tone changes 
are reached by temperature controlling of the toning bath: 
 
temperature (C) Image tone
bellow 20 a lighter, yellow brown
20 - 30 a deeper, mildly warm
above 30 a deep, cold brown
 

Technical Data 
Grade ISO SPEED ISO RANGE D-max
1 400 120 2,1
2 400 100 2,1
3 400 80 2,1
4 400 60 2,1
 

ISO RANGE: It is term for the greatest exposure latitude at the defined maximum and minimum density, in which details can be distinguished both in the shadows and in the highlights. Hard grade papers are suitable for low cont rast negatives with shorter density latitude. Soft grade papers have a greater ISO range, suitable for copying from hard contrast negatives with great density latitude. 

D-max : The values are valid for glossy surface. The other surfaces show lower D-max. 
 

Spectral Sensitivity 
 

Density Curves 
 

Storage 
FOMABROM is recommended to store in a cool, dry place in its original packing at temperature bellow 20C and relative humidity between 50 and 60 %. No harmful gases and fumes should penetrate into the storage room. 
 

 

 
Artzone Index We express our gratitude to K. Theocharis Bros. , distributor of FOMA papers in Greece for giving to us the permission to present the above material. 


Concept and Design by Elias Eliadis
Copyright 1998 Black & White Art Zone- Paperzone. All Rights Reserved. 
First published date 15 July 1998 

 

Paperzone Index
* K. Theocharis Bros.  
25 Lekka str. Athens 10562, Greece,  
Tel: +301 3236393  Fax: +301 3247593