摘要:
A device and method of use for measuring the electrical charge of flying insects. The inventive device comprises measuring the charge induced by a flying insect and measuring the average of charge deposited on a metal screen due to the impact of multiple of insects on the screen.
摘要:
A liquid developer comprised of a liquid, resin particles, an optional nonpolar liquid soluble charge director, and a charge adjuvant comprised of an aluminum salt of an acid, wherein the acid is a hydroxy carboxylic acid, an amino carboxylic acid, an aromatic carboxylic acid, an aliphatic carboxylic acid, or a sulfonic acid and imaging processes using the same one disclosed.
摘要:
A combination of five colored toners containing resin and certain pigments of magenta, yellow, orange, red, and black, and processes for the preparation of these toners by, for example, mixing a cyan, magenta, orange, or red and yellow pigment water wet cake with toner resin, followed by substantially removing the water to generate pigmented resin.
摘要:
A process for preparing toner compositions comprising: coinjecting into a continuously operating fluid energy mill, feed toner particles, and a liquid component; and separating the resulting comminuted toner particles.
摘要:
A process for minimizing the amount of wax that escapes from a toner which comprises melt mixing toner resin and pigment, and injecting a water emulsified wax composition therein, and wherein the generated wax domain size range is from about 50 to about 1,500 nanometers.
摘要:
Polymer encapsulated pigment particles, or electrically passivated pigments, are dispersed in a thermoplastic binder resin by flushing an aqueous slurry or water-wet presscake of the encapsulated pigment particles, using an organic liquid, into the binder resin to form a uniform dispersion of the pigment particles in the binder resin. Subsequently, the dispersion is cooled, solidified and pulverized to form an electrophotographic toner. The triboelectric properties of toners containing pigments having different electrical properties can be thereby controlled, so that the tribos of different colored toners are within a narrow range.
摘要:
A toner composition comprised of resin, pigment and a mixture of charge enhancing additives comprised of an alkylsalicyclic acid and a charge additive of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen and alkyl, and n is zero, 1, 2, 3, or 4.
摘要:
A toner composition comprised of resin particles, passivated pigment particles coated with a polymeric coating, and a passivated tribofiller component coated with a polymeric coating, and wherein the tribofiller component possesses the same, or substantially the same index of refraction as the resin particles in the visible region of the spectrum.
摘要:
Negatively charged toner compositions comprised of resin particles, pigment particles, and as a charge enhancing additive metal salts of the following formula: ##STR1## wherein R is selected from the group consisting of hydrogen and aliphatic substituents; each x is of equal value and represents the number 1, 2, or 3; and M is selected from the group consisting of hydrogen and metals.