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Photographic Paper Model II
Photographic Paper Model RC
Black-and-White Panchromatic Roll Film
Black-and-White Panchromatic Film
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ERA Product

Photographic Paper Model II

Characteristics & Uses

Safety Lighting

Development & Processing

Cautions

Specifications & Packing

EXECUTING STANDARD: QB/T1727-1993

Characteristics & Uses

ERA brand photographic paper Model II is a new type of black-and-white paper improved by adopting advanced technology at home and abroad on the basis of previous technology. The product has silver bromide-chloride evenly coated on high-quality baryta coated paper base. Owing to the absolute chemical steadily of baryta coated paper base, this type of black-and-white photographic paper which made from baryta coated paper can be used to take metal silver images with steady quality. Therefore itís suitable for long keeping. 
According to the use, ERA brand photographic paper Model II can be divided into printing paper and enlarging paper, each of which has four contrast grades of #1(soft), # 2(normal), #3(hard) , # 4 (extra hard) and each of which has several kinds of paper of glossy, silk and velvet surface. It has a good assortment of types. Both cool color and warm color products are provided.
With fast developing, better latitude ,better washing, low fog, high maximum density, high white degree , clear image and rich gradation, this product can be used to make different sizes of portrait photos, scenery photos and art photos.

Safety Lighting

Red safety lamp with the transmission spectrum scope of 630mn can be used in darkroom. Please unseal and use under safety light. Kodak No.2 safety light piece or other similar red safety light pieces can be used to compose safety lighting with 15w bulbs. The lighting scope exceeds 2 meters, and the continuous lighting duration canít be lasting too long.

Development & Processing

 1. Developing: Developer D-72 is recommended.
    Clean water (52 ºC)                                                          750ml
    N-methyl p-aminophenol sulfate                                         3.1g
    Sulphurous acid sodium without water (Na2SO3)             45.0g
    Hydroquinone                                                                    12.0g
    Sodium carbonate (Na2CO3)                                              67.5g
    Potassium bromide (KBr)                                                    1.9g
    Add water to                                                                   1000ml
When making the prescription, the preparation should be added according to the order as mentioned above. When using, get the raw liquor to dilute in proportion of 1:2.at 20 ºC, printing paper for 1--2 minutes, enlarging paper for 2--3 minutes.
 2. Stop bath: After developing, immerges photo paper in following stop bath solution for 20 seconds.
    Clean water                                                                    1000ml
    Glacial acetic acid (CH3COOH)                                        48ml
 3. Fixing: F-5 fixing solution is recommended. 
    Sodium thiosulphate acid (Na2S2O3 .5H2O)                   240.0g
    Sulphurous acid sodium without water (Na2SO3)            15.0g
    28%Glacial acetic acid (CH3COOH)                                48ml
    Boric acid (H3BO3)                                                             7.5g
    Potassium alum (KAI (SO4) 2.12 H2O)                            15.0g
    Add water to                                                                 1000ml
Immerge photo paper in fixing solution and flip it over, for 20--25 minutes at 20--25 ºC.
If the limitation of conditions, other sets of fixing liquors for black-and-white paper can obtain similar better whiteness result.
 4. Washing: Wash in running water for 60 minutes upwards.
 5. Glazing and drying: After washing, glossy paper can be put on glass board or chrome plate glazer for glazing and drying, or use an electric glazer for heat-drying. Silk surface paper and velvet surface paper, please put it in a dust-free, airiness place for air drying or heat drying.
 6. Optimum permanence: The biggest cause of premature deterioration of black-and-white photographs is undoubtedly poor processing technique, notably inadequate fixing and/or washing. There had been, a resistance to using shorter fixing and washing times, where image quality and permanence are concerned.

Cautions

The photographic paper ought to be kept in the cool and dry environment within original packing. Paper in canisters should be placed horizontally. All kinds of paper should be placed 15cm high above the floor, avoiding direct bright sunshine and prevent harmful gases and radioactive objects from corroding. If opened, the paper should be used up immediately. The rest should be repacked up to avoid becoming damp.

Specifications & Packing

Species Specification Unit Packing Count/Per Carton
Printing Paper
12.7CM X 17.8CM X 100 Box 40
50.8CM X 10M X 1 Canister 10
20.3CM X 304M X 1 Canister 2
Enlarging Paper 25.4CM X 30.5CM X 100 Box 10
12.7CM X 17.8CM X 100 Box 40
8.9CM X 14CM X 100 Box 60
50.8CM X 61CM X 50 Box 4
50.8CM X 10M X 1 Canister 10
106.7CM X 10M X 1 Canister 6

 Note: Photographic paper can be produced in other specification according to the order requirement of the clients.

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