nontoxicprint

Nontoxic Printmaking, Safe Painting & Printed Art


Collagraphy                                              CONTENT  |  SEARCH





mark-making comparison: collagraph (white marks)   |   photo etch   |   open bite 


The collagraph is a low-tech printmaking medium which traditionally allows intaglio prints to be generated without the use of acid or tar-based resist solutions, whilst providing a full range of mark-making opportunities. Acrylic paints and mediums, often mixed with carborundum or texturing mediums, are the most common mark-making media in the collagraph, and substrates such as primed sheets of card board or plexiglass are commonly used as a cheaper alternative to metal plates, although these can also be used. 


More craft-oriented printmakers utilize texturing media such as fabrics, scrim, or sandpaper as sole additions to their plate construction, but the possibilities for plate construction or the combination of aquatint and collagraphic overpainting are potentially much broader than this, once the basic process has been understood.


The medium can be regarded as one of the earliest forms of nontoxic printmaking practice. It's use by artists is wide-spread, and the potential of this method as both a professional printmaking medium as well as a form of contemporary expression is often undervalued and has the potential to be explored further, especially due to its accessibility and easy integration with other polymer-based forms of printmaking (e.g. Intaglio Type, or Acrylic Resist Etching).


Many of Keith Howard's nontoxic printmaking innovations contain aspects of collagraphic printing (hybrid relief and intaglio printing; plate making through construction). Edinburgh Printmakers were one of the first professional studios to promote the Collagraph as a major nontoxic form of contemporary art printing, and Carborundum printing (a form of calligraphy) has a history going back to the early 20th century.


Calligraphy is particularly useful for use in the setting of an artist's studio, due to its creative immediacy, accessibility, and control, whilst less common in professional print editioning environments, due to the often seemingly more limited scope of the more fragile calligraphy plates for replication and commercial printing.


The medium emphasizes artistic expression over reproducibility, although collagraphs can easily be used for larger and more commercial print editions through transfer into digital media, Intaglio Type, or metal etching.







By Angela Babin, M.S., Michael McCann, Ph.D., C.I.H.,
and Devora Neumark


Collagraphs



     Collagraphs are prints produced by using a collage of
different materials glued onto a rigid support.   A wide variety of
materials and adhesives can be used in making collagraphs.



Hazards

1. Rubber cement, a common adhesive used with collagraphs, is
extremely flammable and most rubber cements and their thinners
contain the solvent n-hexane which can cause damage to the
peripheral nervous system (hands, arms, legs, feet) from chronic
inhalation.

2. Epoxy glues can cause skin and eye irritation and allergies.

3. See the Solvents section for solvent hazards found in adhesives.

4. Spraying fixatives on the back of collagraph plates to seal them
can involve risk of inhalation of the solvent-containing spray
mist.

5. Sanding collagraph plates which have been treated with acrylic
modeling compounds or similar materials can involve inhalation of
irritating dusts.

6. A wide variety of other materials with varying toxicities can be
used in making collagraph plates.



Precautions

1. Know the hazards of materials used.  Obtain the MSDSs from the
manufacturer.  

2. Use the least toxic materials available.  In particular use
water-based glues and mediums (e.g. acrylic medium) whenever
possible.  Some rubber cements are made with the solvent heptane,
which is less toxic than n-hexane, primarily because peripheral
neuropathy is not associated with its use. 

3. Use dilution ventilation (e.g. window exhaust fan) with small amounts of
solvents and large amounts of acrylic medium (due to the presence
of small amounts of ammonia).  For highly toxic solvents or large
amounts of solvents or other toxic chemicals, use local exhaust
ventilation (e.g. slot hood, enclosed hood, etc.).  A window
exhaust fan can be used if set up only 1-2 feet away.

4. Use spray fixatives in a spray booth that exhausts to the
outside, or outdoors.

5. Wear gloves when using epoxy glues.

6. Wear a NIOSH-approved toxic dust respirator when sanding
collagraph plates.





http://en.wikipedia.org/wiki/Collagraphy

From Wikipedia, the free encyclopedia



This article is about the printmaking process. For the photographic process, see Collotype. For decorative writing, see Calligraphy.

Collagraphy (sometimes spelled collography) is a printmaking process in which materials are applied to a rigid substrate (such as paperboard or wood). The word is derived from the Greek word koll or kolla, meaning glue and graph, meaning the activity of drawing.

The plate can be intaglio-inked, inked with a roller or paintbrush, or some combination thereof. Ink or pigment is applied to the resulting collage, and the board is used to print onto paper or another material using either a printing pressor various hand tools. The resulting print is termed a collagraph. Substances such as carborundumacrylic texture mediums, sandpapers, bubble wrap, string, cut card, leaves and grass can all be used in creating the collagraph plate. In some instances, leaves can be used as a source of pigment by rubbing them onto the surface of the plate.


Different tonal effects and vibrant colours can be achieved with the technique due to the depth of relief and differential inking that results from the collagraph plate's highly textured surface. Collagraphy is a very open printmaking method. Ink may be applied to the upper surfaces of the plate with a brayer for a relief print, or ink may be applied to the entire board and then removed from the upper surfaces but remain in the spaces between objects, resulting in an intaglio print. A combination of both intaglio and relief methods may also be employed. A printing press may or may not be used.




References[edit]

       Brenda Hartill and Richard Clarke (2005). Collagraphs and Mixed-Media Printmaking.

       Robert Adam and Carol Robertson (2008). Intaglio: Acrylic-Resist Etching, Collagraphy, Engraving, Drypoint, Mezzotint.

       Mary Ann Wenniger (1981). Collagraph Printmaking.

       Clare Romano and John Ross (1980). The Complete Collagraph: The Art and Technique of Printmaking from Collage Plates.

       Donald Stoltenberg (1975). Collagraph Printmaking.