Patent
Dye powder compositions
Wilfred M Murch,Frances M Higgins +1 more
- 16 Jun 1930
36
TL;DR: In this article, a process for preparing vat dye powder compositions in powder form and the processes for their preparation is described. But this process is restricted to water-insoluble dyes, particularly vat dyes.
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Abstract: This invention relates to new dye powder compositions and to a process for preparing the same. More particularly the invention relates to new vat dye compositions in powder form and to the processes for their preparation. Water-insoluble dyes, particularly vat dyes, are frequently prepared...
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Citations
Patent
Ink for ink jet printers
Ronald Sinclair Nohr,John Gavin Macdonald +1 more
- 24 Sep 1997
TL;DR: An improved ink suitable for ink jet printing comprising, a mixture of a colorant, an arylketoalkene stabilizing compound or a photoreactor, and a liquid vehicle, wherein the colorant is light-stable as mentioned in this paper.
75
Patent
Digital information recording media and method of using same
Ronald Sinclair Nohr,John Gavin Macdonald +1 more
- 03 Jun 1996
TL;DR: In this article, a digital information recording media which includes a recording layer comprising a light-stable colored composition which composition is mutable or decolorizable upon exposure to a specific wavelength of ultraviolet radiation.
41
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Pre-dyes, mutable dye compositions, and methods of developing a color
Ronald Sinclair Nohr,John Gavin Macdonald +1 more
- 29 May 1996
TL;DR: One embodiment of the present invention is a method and composition comprising a novel pre-dye molecule that is colorless and stable to ordinary light as discussed by the authors, which is capable of forming a color when exposed to certain wavelengths of electromagnetic radiation.
39
Patent
Photo-erasable data processing forms
Ronald Sinclair Nohr,John Gavin Macdonald,Michael Wilfred Mosehauer +2 more
- 29 Nov 1995
TL;DR: In this article, a data processing form for use with photo-sensing apparatus that detects the presence of indicia at receiving locations on the form is presented, where the indicia-receiving locations are defined by a mutable colored composition.
20
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Colorant compositions and colorant stabilizers
Ronald Sinclair Nohr,John Gavin Macdonald +1 more
- 05 Jun 1995
TL;DR: In this article, a light-stable colored composition which includes a colorant and a radiation transorber is presented, where the colorant is adapted upon exposure to specific, narrow bandwidth radiation, to be mutable.
19
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