The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2014
Filed:
Jan. 30, 2012
Stephan J. W. Platzer, Longmeadow, MA (US);
James A. Bonham, Lake Elmo, MN (US);
Kimberly R. Kukla, Medina, TN (US);
Richard C. Wax, Kentwood, MI (US);
Teresa Baker, Louisberg, NC (US);
Ella Ross Ryan, Durham, NC (US);
Stephan J. W. Platzer, Longmeadow, MA (US);
James A. Bonham, Lake Elmo, MN (US);
Kimberly R. Kukla, Medina, TN (US);
Richard C. Wax, Kentwood, MI (US);
Teresa Baker, Louisberg, NC (US);
Ella Ross Ryan, Durham, NC (US);
Southern Lithoplate, Inc., Youngsville, NC (US);
Abstract
An infrared sensitive, positive-working, image forming composition and element are disclosed. The image forming composition comprises a 1,1-di[(alkylphenoxy)ethoxy]cyclohexane, an infrared absorbing dye having a maximum absorption peak in the range of from about 700 nm to about 1100 nm, and a novolac polymer. The composition is applied and dried on a planar, hydrophilic substrate to form an image forming element, in particular, a planographic printing plate. Upon imagewise exposure to a near-infrared radiation source, the infrared dye absorbs light in the exposed areas and converts it to heat, which causes a disruption in the matrix of the image forming composition. Upon development with an aqueous alkaline developer, the exposed areas are removed while the nonexposed areas remain, thus forming a positive image.