Abstract:
An ink set is provided which can prevent the occurrence of a new color mixing phenomenon in which a different ink comes into the insides of particular ink channels. The ink set is constituted of plurality of inks. The plurality of inks constituting the ink set is stored respectively in ink cartridges each having an ink storage portion which is brought into a hermetically-closed state. The difference in specific gravity between a first ink having the largest specific gravity and a second ink having the smallest specific gravity among the inks constituting the ink set is less than 0.020.
Abstract:
Disclosed is an aqueous ink containing water, a water-insoluble colorant and a plurality of water-soluble organic solvents. The water-soluble organic solvents contain a good solvent and poor solvent for the water-insoluble colorant in a specific ratio, and the water-soluble solvent having the largest Ka value among the water-soluble organic solvents is a poor solvent. When such an aqueous ink is in contact with a specific reactive liquid, the dissolution state or dispersion state of the water-insoluble colorant in the ink is destabilized, thereby having a sufficiently large area factor even with a small amount of ink droplet and enabling to obtain an image which is excellent in the image density, bleed resistance and fixability. This aqueous ink is also excellent in shelf life stability.
Abstract:
Disclosed is an aqueous ink containing water, a plurality of water-soluble organic solvents and a colorant. The colorant is composed of a pigment, and at least one ionic group is bonded to the surface of a pigment particle directly or via an other atomic group. The water-soluble organic solvents contain a good solvent and a poor solvent for the pigment. The poor solvent does not solvate the pigment at all or does not substantially solvate the pigment. The ionic group is not dissociated at all or is not substantially dissociated in the poor solvent. Furthermore, a poor solvent has the largest Ka value, which is determined by the Bristow method, among the water-soluble organic solvents.
Abstract:
An ink having a sufficiently large area factor even with a small amount of ink droplet and being excellent in shelf life stability is disclosed which enables to obtain an image having excellent image density. Specifically disclosed is a cyan ink used for an ink set comprising four kinds of aqueous inks, namely a cyan ink, a magenta ink, an yellow ink and a black ink, respectively containing at least water, a water-insoluble colorant and a plurality of water-soluble organic solvents including a good solvent for the water-insoluble colorant and a poor solvent for the water-insoluble colorant. The cyan ink is characterized in that the total amount A1 (% by mass) of the good solvent contained in the cyan ink and the total amount B1 (% by mass) of the poor solvent contained in the cyan ink are in a ratio B1/A1 of not less than 0.5 and not more than 3.0; and the water-soluble solvent having the largest Ka value determined by the Bristow method among the water-soluble organic solvents is a poor solvent.
Abstract:
Disclosed is an aqueous ink comprising at least water, a plurality of water-soluble organic solvents and a coloring material. The coloring material is a pigment, and, it contains a pigment particle having at least one ionic group bonded to a surface of the pigment particle directly or via another atomic group. The plurality of water-soluble organic solvents have a good medium or good mediums for the pigment and a poor medium or poor mediums for the pigment. The poor medium does not solvate perfectly or substantially the pigment. The ionic group undergoes perfectly or substantially no ionic dissociation in the poor medium. Also, among the respective Ka values of the plurality of water-soluble organic solvents as determined by the Bristow method, the Ka value of the poor medium is maximum.
Abstract:
A reaction solution that is used for image recording with an ink containing a coloring material in a dissolved or dispersed state to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink to provide high quality and abrasion-resistant images, wherein the reaction solution contains at least a polyvalent metal ion and a nonionic polymer, the Ka value according to the Bristow method is from 1.3 mL.m .msec to 3.0 mL.m .msec inclusive, and the viscosity is from 20 mPa.s to 150 mPa.s inclusive.
Abstract:
A reaction solution that is used for image recording with an ink containing a coloring material in a dissolved or dispersed state to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink to provide high quality and abrasion-resistant images, wherein the reaction solution contains at least a polyvalent metal ion and a nonionic polymer, the Ka value according to the Bristow method is from 1.3 mL.m .msec to 3.0 mL.m .msec inclusive, and the viscosity is from 20 mPa.s to 150 mPa.s inclusive.
Abstract:
Aparato facsímil que comprende: medios de interfaz (108) para recibir la información enviada desde un aparato de proceso de información externo (109); medios de transmisión (104) para transmitir datos de facsímil mediante una línea de comunicación; medios operativos (112) para recibir instrucciones manuales; y medios de control (101) para aceptar y actuar sobre una serie de instrucciones distintas recibidas desde un aparato de proceso de información externo (109) con intermedio de medios de interfaz (108) y para aceptar y actuar sobre una serie de instrucciones distintas desde los medios operativos (112), estando dispuestos los medios de control para inhibir la aceptación de instrucciones desde los medios operativos (112) mientras están actuando sobre una primera instrucción de la serie de distintas instrucciones desde un aparato externo de proceso de informaciones (109) y no estando dispuesto para inhibir la aceptación de instrucciones desde los medios operativos (112) mientras actúan sobre una segunda instrucción de la serie de instrucciones distintas desde un aparato de proceso de informaciones externo (109), caracterizado porque dicha segunda instrucción es una instrucción para cambiar un parámetro utilizado en una modalidad operativa del aparato facsímil o una instrucción para borrar datos de imagen almacenados en el aparato facsímil.