摘要:
Provided is a set of a reaction liquid that has a buffering action against pH change and exhibits a pH of 3.5 or more and 5.5 or less, and an ink that has a higher pH than the reaction liquid. The ink comprises a pigment to a surface of a pigment particle of which a basic group that forms a cation form at the pH of the reaction liquid is bonded. The pigment does not have an acidic group having a pKa equal to or less than the pH of the reaction liquid. The pigment is dispersed by a water-soluble polymer that has an acidic group having a pKa equal to or more than the pH of the reaction liquid and equal to or less than the pH of the ink.
摘要:
Provided is a set of a reaction liquid that has a buffering action against pH change and exhibits a pH of 3.5 or more and 5.5 or less, and an ink that has a higher pH than the reaction liquid. The ink comprises a pigment to a surface of a pigment particle of which a basic group that forms a cation form at the pH of the reaction liquid is bonded. The pigment does not have an acidic group having a pKa equal to or less than the pH of the reaction liquid. The pigment is dispersed by a water-soluble polymer that has an acidic group having a pKa equal to or more than the pH of the reaction liquid and equal to or less than the pH of the ink.
摘要:
Provided are an aqueous ink containing: water; multiple water-soluble organic solvents; and a dispersible colorant, the aqueous ink containing a good medium with respect to the dispersible colorant and a bad medium with respect to the dispersible colorant as the water-soluble organic solvents, in which: the dispersible colorant is a dispersible colorant having a colorant and chargeable resin pseudo fine particles each of which is smaller than the colorant in which the colorant and the chargeable resin pseudo fine particles fix to each other; and when a total amount of the good medium in the ink (mass %) is denoted by A and a total amount of the bad medium in the ink (mass %) is denoted by B, A:B is in the range of 10:5 to 10:30.
摘要:
Provided is a synthesis method for a self-dispersible pigment, including performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.
摘要:
A dispersible colorant suitable for ink-jet recording ink is manufactured by a method using aqueous precipitation polymerization. The ink has high dispersion stability and can form a high-quality image excellent in fastness properties. The method includes at least a dispersing step of dispersing a colorant into an aqueous solution by means of a dispersant, an aqueous precipitation polymerization step of adding a resin monomer and a radical polymerization initiator to the solution into which the colorant is dispersed to manufacture a dispersible colorant having a chargeable resin pseudo-fine particle, fixing thereon by means of aqueous precipitation polymerization, and an ultrafiltration step of subjecting the aqueous solution containing the dispersible colorant to ultrafiltration to obtain the dispersible colorant.
摘要:
When a packet arrives from a communication terminal apparatus, i.e., a communicating terminal with which the IPsec communication is performed, a source IP address is recognized from an IP header of the packet and a security policy is registered in an SPD. At the same time, an encoding parameter for the encoded communication with the communicating terminal is registered in an SAD. When an SA entry is deleted from the SAD, the security policy for the communicating terminal is deleted from the SPD, as long as there is no other entry that is referring to the security policy corresponding to the deleted SA entry.
摘要:
A movable table unit capable of carrying out an operation for rotating a movable table at a position other than an original point and an operation for moving it in parallel after rotating at a predetermined angle by a simple control, capable of moving the rotation center linearly along two axes easily, and further moving the movable table largely along a single axis, is provided. The movable table unit for achieving this object comprises a table base plate, a movable table supported movably on the table base plate, a plurality of moving members joined to a bottom surface of the movable table, a plurality of two-axis guiding systems for guiding each of the moving members along two axes intersecting with each other on the table base plate and for guiding largely along an axis, rotation systems for supporting the movable table or moving members rotatably relative to each of the two-axis guiding systems and a plurality of driving systems for moving each of the moving members selectively along any one of the two axial directions so as to provide the movable table with a linear motion along the two axes and for providing the movable table with a rotation motion around an axis perpendicular to the table base plate.
摘要:
To provide a waste ink absorbing tank, capable, even in the case of utilizing an ink of a high coagulating property, of causing a waste ink absorbent member to efficiently absorb such ink. A waste ink absorbent member has a hole portion corresponding to an introducing position of the waste ink, and the hole portion is opened on a lateral face of the absorbent member. The waste ink, introduced into the hole portion moves in one direction toward the waste ink absorbent member and absorbed therein.
摘要:
To provide a waste ink absorbing tank, capable, even in the case of utilizing an ink of a high coagulating property, of causing a waste ink absorbent member to efficiently absorb such ink. A waste ink absorbent member has a hole portion corresponding to an introducing position of the waste ink, and the hole portion is opened on a lateral face of the absorbent member. The waste ink, introduced into the hole portion moves in one direction toward the waste ink absorbent member and absorbed therein.