Linen Backing. The process of putting a poster onto acid free paper and canvas. This kind of mounting is “archival” in that is does not contribute to the deterioration of the poster.
The procedure includes mixing calcium carbonate into the paste to help create an Acid-Buffer (different from “de-acidification”). Using acid neutralized wheat or rice paste- the poster is glued to the paper, and the paper to the stretched canvas. While Poster, Paper and Canvas are still wet, we are able to do further surface cleaning and flattening. The drying process is 4 to 6 days, depending on the atmospheric conditions (humidity) of the environment. Our most popular form of archival mounting is Linen Backing and is also referred to as “Canvas Backing”, “Canvas Mounting” and “Cotton Mounting”. To “Linen Back” has become the popular term even though Cotton is the most used material in the world. This process is a direct descendant of Rice paper backing and Silk backing traditionally done in the Far Eastern countries such as China, Japan and Korea. The French adapted and developed these techniques in the late 19th century for Poster Collecting.
Some of the benefits of today’s Linen Backing include flattening the folds, sealing tears, and providing a base for restoration if needed. It is also good for framing or other display techniques.
Acid Neutralizing is the process of immersing the poster in an alkaline bath which creates a protective buffer around the acid molecules that are in the poster. Acid can destroy the paper over time, and most papers which posters are printed on are filled with acid due to the way they are produced (Most fine art Print-Making is printed on Acid Free paper). Commercial posters and manuscripts printed after the 1840s have acid in them. This Acid Buffering technique is NOT the same as De-acidification. The former is a process of the removal of acid. The latter method ensures that the acids in your poster remain isolated and non-destructive for about 50 to 100 years. The process for complete Acid Buffering/Neutralizing costs $75 for a one sheet poster (27 x 41 inches).
Bleaching. This process is only used for Posters with distracting stains (as in water stains) or which are browning by long exposure to dirty air. It is not appropriate for yellowing caused by mold. However bleach may be an option as a disinfectant for moldy posters. Using Chloramine T or Hydrogen Peroxide mixed with ph balanced water, we create a bath in which the poster is soaked to remove the stains. This bleaching is harmless to paper, does not affect the colors of the inks and does not change the natural color of the paper. Bleaching does not devalue the poster, but rather brings back the original look it had when it was first printed. A very delicate and slow procedure, this process is only used when appropriate and is not part of the normal Linen Backing process. Bleaching costs $100 for a one-sheet poster.
Tape, Glue Residue Removal and Removing Old Linings. Old posters often have tape applied to the back or front to hold them together. This tape must be removed in order to bring about the posters conservation and allow it to be Linen Backed. Removing tape usually requires using various chemicals such as Benzene, or Acetone to name but a few. Such chemicals are very toxic and their use must be done in strict laboratory conditions. All tape or glue resins must be removed in order for the poster to absorb the wheat paste in the Linen Backing process. Some old posters may have been mounted onto board, or old canvas in a non-archival way; removing these old backings is essential to the proper archival care and conservation of a poster. Like with tape/glue removal, taking a poster off an old backing may require the use of very powerful chemicals, again under strict conditions. Some backings are simply too strong to be removed or the poster too weak to survive the process; in most cases we can find a way to do it. It is important that the poster be worth the trouble before spending on such procedures, as it might be more cost effective to simply replace the poster. Many customers do not notice tape on the back of their posters: So be warned that this process is billed at $75/ hour.
Removing Writing from Back. It is essential to remove writing from the back of a poster before Linen Backing it. If this is not done, the writing could cause air bubbles in the Lining, or show thru to the front of the poster after backing it. Removal of writing is sometimes done by skinning the writing off, or occasionally by erasing it. We only charge for writing removal when it is excessive.
Paper Fills. Once the poster has been Linen Mounted, we can determine as to whether it needs to have missing paper replaced. Not all poster collectors want this option, but most dealers and archivists do. Once paper is replaced we can recreate missing areas of the image. Using a vast Library of old paper, or new matching acid free paper, we can approximate the posters original paper color, weight and texture. We also use water based archival color to tint the paper, making sure that it matches the original paper color or ink. Another method of filling in holes is to use our own method/mixture of paper-pulp. This is where we create a paper fill by using cellulose and water based glue, which, when dry, conforms to the posters character. Which method to use for your poster depends on the situation, and we advise accordingly. Be sure that your poster is worth the effort. Paper replacement is $75/ hour.
In-Painting and Color Retouching. Replacing missing color is done with water based paint or inks, from either powdered pigment, water color paint, or actual Litho inks. “Color Retouching” is the term we use for filling in color in creases or folds that have been flattened by the Linen Backing process. Once a poster has been backed, the creases, folds, and rips may still be visible due to ink loss. White lines can become apparent when flattening posters which have “folio folds” (machine-folds for distribution). We have 20 years of color retouching experience and match colors perfectly. Doing this to a flattened fold or a mended rip can further reduce the scare left by such defects. This restoration helps bring back the posters value. We use the term “In-painting” when we need to recreate areas of the poster, such as the image or typography. This is our best and most sought-after service. When an area of the poster is missing we can recreate it if we have a good reference of the poster. In the case of missing type, we can also recreate letters which have been damaged by rips or creases or missing paper. When recreating areas of an image we will often employ the use of Water Color Pencils to finely adjust the color to match the original posters color, or to make realistic renderings possible, as in recreating a person’s face in the posters image. We do the best color matching you can get and at a fraction of the time it takes others to do it. Retouching and In-painting are $75/hour.
US . . .
for shipping or drop offs (by appointment only):
Brooklyn Navy Yard
Building 5 Suite 210
63 Flushing Ave., Unit 249
Brooklyn NY 11205
SHIPPING: If shipping your poster please use FedEx or UPS and not the US Postal Service. The Brooklyn Navy Yard is not providing reliable postal service.
NEW! Pfix Archival Glue