Photographic Paper

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Paper, Photographic

 

a sensitized material, consisting of base paper (backing) coated with a layer of photosensitive emulsion.

This layer is a suspension of silver halide microcrystals (from 0.5 to 0.01 microns and smaller) in an aqueous gelatin solution. The emulsion is applied to the backing in a thin layer and then dried until air-dry. The thickness of the dried layer is 10-15 microns. Depending on the type of photographic paper, the emulsion is applied either directly to the raw paper material or to a paper backing precoated with a layer of barite. This layer consists of barium sulfate micro-particles with gelatin as a binder.

Photographic paper (black-and-white and color) is classed in two groups—general purpose and technical. The first group is intended for amateur, professional, and artistic photography, and the second group is intended for photographic work in various technical fields.

General purpose photographic paper is made for projection and contact printing, and the technical paper is intended for exposure, registration, and copy printing. General purpose photographic paper is available in glossy, mat, and semimat finishes; grades of paper are soft (no. 1), standard (nos. 2 and 3), contrast (nos. 4 and 5), and high contrast (nos. 6 and 7); photobacking densities (thicknesses) include cardboard (240 g per sq m), semiboard (180 g per sq m), and thin (135 g per sq m); surface micropatterns may be smooth or textured (embossed); photobackings are white and cream-colored. General purpose photographic paper is packed in rolls and format sizes (from 6 x 9 cm to 50 x 60 cm) in packages of ten, 20, 50, and 100 sheets.

Technical photographic paper has a greater range of qualities (photosensitivity and gradations) and uses. It is classified as extremely sensitive paper for recording oscillographs, electrocardiographs, and phototelegraphs, and paper for the rapid copying of documentation, including reflex paper, photostats, photographic tracing paper (on a transparent backing), and “Tekhnokopir” and “Kontakt” paper.

Technical photographic paper is produced mainly on a thin photobacking (80-100 g per sq m) in 36- to 1,000-mm wide rolls and in different size sheets.

Color photographic paper is intended for contact and projection printing of color photographs from color negatives.

REFERENCE

Vasil’ev, V. K., M. I. Shor, and L. P. Shamshev. Negativnye i pozitivnye fotomaterialy, 2nd ed. Moscow, 1959.
References in periodicals archive ?
Revenue from digital photo paper was approximately $0.
Costs of sales per tonne for Regular CMP, Light-Weight CMP, offset printing paper, tissue paper products, and digital photo paper were, $286, $254, $568, $1,301, and $7,695, respectively, for the third quarter of 2015, compared to $311, $257, $565, $nil, and $3,845, respectively, for the same period of last year.
Liu continued, "We are optimistic about our growth prospects in the second half of the year as our new tissue paper products have begun commercial production and our digital photo paper production lines have resumed.
The revenue increase was mainly attributable to increased sales of both the Company's Regular CMP and new Light-Weight CMP products, which were partially offset by the absence of revenue from the digital photo paper due to the production line relocation.
Zhenyong Liu, Chairman and Chief Executive Officer of Orient Paper, commented, "We are pleased to announce the completion of the relocation project for our digital photo paper production lines and are excited to resume commercial production for our own brand of digital photo paper products.
The revenue increase was mainly due to revenue from our new Light-Weight CMP product, which was partially offset by the absence of revenue from the digital photo paper due to the production line relocation.
Production of digital photo paper is suspended while our production facilities are being relocated pursuant to the regulatory mandates by the Xushui county government.
The revenue decline was mostly due to the absence of sales of digital photo paper because those production facilities are being relocated, and the decline in the volume of offset printing paper sold.
Production of digital photo paper is suspended while production facilities are relocated in compliance with regulatory mandates by the Xushui county government.
1% to 146 tonnes, due to our having to relocate our digital photo paper production facilities.
Revenue was up, we maintained high utilization of PM6, and made progress on relocating the digital photo paper lines.
Such products include glossy papers, digital photo papers, transparencies and other `value-added' products which carry higher profit margins and are less vulnerable to fluctuations in commodity paper prices.

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