摘要:
A colorant contains a crystal of a compound represented by the following formula (1): the crystal having a crystal form showing main peaks at interplanar spacings d of 3.45±0.5 Å, 3.63±0.5 Å, 4.23±0.5 Å, 6.65±0.5 Å, and 7.84±0.5 Å in powder X-ray diffraction pattern with CuKα radiation.
摘要:
An image-forming material includes a perimidine-based squarylium dye represented by the following Formula (I): wherein, in Formula (I), R represents a hydrogen atom or a methyl group.
摘要:
An image forming material includes a perimidine-substituted squarylium dye that has a structure represented by the following formula (I) and shows diffraction peaks at least at Bragg angles (2θ±0.2°) of 17.7°, 19.9°, 22.1°, 23.2° and 24.9° in its X-ray powder diffraction spectrum measured by irradiation with X rays generated from a Cu target with a wavelength of 1.5405 angstroms:
摘要:
The black color material includes a condensation product of a pyrrole compound represented by the following formula (1) and a squaric acid represented by the following formula (2):
摘要:
A perimidine-based squarylium dye contains a compound represented by Formula (I), the compound containing an isomer A and satisfying the following formula: Pa≧95(%) wherein the isomer A is an isomer of the peak shown in the longest retention time among all peaks due to isomers obtained by analysis of the compound by means of reversed-phase high-performance liquid chromatography, and Pa represents a value of the peak area of the isomer A relative to the peak area of all peaks
摘要:
A recording medium includes a first image that is read with infrared light and that is formed of plural dots having infrared absorptivity, part of the plural dots being invisible first dots, the remaining dots being visible second dots; and a visible second image that is formed of the second dots or the second dots and visible third dots not having infrared absorptivity.
摘要:
A recording medium includes a surface in which an infrared absorptance is less than a threshold value; and plural dot images that records information by an arrangement pattern formed on the surface, in which the infrared absorptance is equal to or more than the threshold value, and a specular gloss to infrared rays is equal to or less than 22%.
摘要:
An image forming apparatus includes first and second image forming units. The first image forming unit forms a first image on a surface of a recording medium which has ratios of reflecting incident light. The second image forming unit forms a second image on the surface. The ratios of the recording medium are equal to or greater than a threshold value in all of a specular direction and a specific direction other than the specular direction. The first image has a ratio of reflecting the incident light in the specular direction being equal to or greater than the threshold value and a ratio of reflecting the incident light in the specific direction being less than the threshold value. The second image has the ratios of reflecting the incident light in the specular direction and in the specific direction being less than the threshold value.