Difference between revisions of "Lithograph crayon"

From CAMEO
Jump to: navigation, search
m (Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2")
 
Line 2: Line 2:
 
== Description ==
 
== Description ==
  
A type of grease pencil used to draw an image on a flat surface for reproduction by the lithographic technique. The crayon lines attract and hold an oily ink used in the printing process. Litho crayons contain [[tallow|tallow]] or [[stearic|acid stearic acid]], [[wax|wax]] ([[carnauba|wax carnauba]], [[beeswax|beeswax]]), resin ([[copal|copal]], [[shellac|shellac]]), and [[lampblack|lampblack]]. They also contain an alkali, such as [[lye|lye]] or [[potassium|carbonate potassium carbonate]], to saponify the fatty acids. The ingredients are mixed, heated then cast into sticks for crayons or thin rods for pencils. They are available in varying hardness: five for the pencil type and seven for the crayon type.  
+
A type of grease pencil used to draw an image on a flat surface for reproduction by the lithographic technique. The crayon lines attract and hold an oily ink used in the printing process. Litho crayons contain [[tallow|tallow]] or [[stearic acid|stearic acid]], [[wax|wax]] ([[carnauba wax|carnauba]], [[beeswax|beeswax]]), resin ([[copal|copal]], [[shellac|shellac]]), and [[lampblack|lampblack]]. They also contain an alkali, such as [[lye|lye]] or [[potassium carbonate|potassium carbonate]], to saponify the fatty acids. The ingredients are mixed, heated then cast into sticks for crayons or thin rods for pencils. They are available in varying hardness: five for the pencil type and seven for the crayon type.  
  
 
See also [[tusche|tusche]].
 
See also [[tusche|tusche]].
Line 25: Line 25:
 
== Sources Checked for Data in Record ==
 
== Sources Checked for Data in Record ==
  
* Ralph Mayer, Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
+
* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
  
* Michael McCann, Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
+
* Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
  
* Book and Paper Group, Book and Paper Group, ''Paper Conservation Catalog'', AIC, 1984, 1989
+
* Book and Paper Group, ''Paper Conservation Catalog'', AIC, 1984, 1989
  
 
* ''A Glossary of Paper Conservation Terms'', Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
 
* ''A Glossary of Paper Conservation Terms'', Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998

Latest revision as of 13:35, 25 November 2019

58.606-C36428.jpg

Description

A type of grease pencil used to draw an image on a flat surface for reproduction by the lithographic technique. The crayon lines attract and hold an oily ink used in the printing process. Litho crayons contain tallow or stearic acid, wax (carnauba, beeswax), resin (copal, shellac), and lampblack. They also contain an alkali, such as lye or potassium carbonate, to saponify the fatty acids. The ingredients are mixed, heated then cast into sticks for crayons or thin rods for pencils. They are available in varying hardness: five for the pencil type and seven for the crayon type.

See also tusche.

Lithograph crayon

Synonyms and Related Terms

litho crayon; lithographic crayon

Other Properties

Soluble in aromatic hydrocarbons, turpentine.Slightly soluble in ethanol, water.

Hazards and Safety

Halos may form when used on absorbent material.Bloom may form on surface.

Additional Information

M.Holben Ellis, M.Brigitte Yeh,"Categories of Wax-based Drawing Media" WAAC Newsletter, Vol 19(3), 1997.

Sources Checked for Data in Record

  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
  • A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998