Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mPa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mPa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mPa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mpa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: A method is provided for manufacturing a thermal paper from a thermal recording medium having a thermal color developing layer on a recording surface thereof. The method includes developing at least one color on one portion of the thermal color developing layer, and cutting off a portion of the thermal recording medium at the one portion.

Abstract: There is provided a thermosensitive recording medium in which a first thermosensitive coloring layer that develops a first hue and a second thermosensitive coloring layer that develops a second hue different from the first hue, wherein the first and second thermosensitive coloring layers having the respective widths are continuously formed in stripes in a longitudinal direction of a substrate. There is also described a method of manufacturing a number of the thermosensitive recording mediums from a substrate in that, after a multiplicity of the thermosensitive coloring layers are formed by repetitively coating a plurality of water-dispersion thermosensitive inks on the substrate having an ink receptive layer thereon, the respective inks having different coloring hues, the substrate is slit into multiple thermosensitive recording mediums along a line or lines provided over any of the thermosensitive coloring layer or layers.

Abstract: A thermosensitive recording medium 1 is produced by printing a first water-dispersion thermosensitive ink by a printing method that uses a printing plate on a substrate on a surface of which an ink receptive layer impregnating the first water-dispersion thermosensitive ink is provided, and then printing a second water-dispersion thermosensitive ink using the same printing method. The first water-dispersion thermosensitive ink is prepared by dispersing a pigment that contains at least an electron-donating compound in water, and the second water-dispersion thermosensitive ink contains one or both of at least an electron-accepting compound and a sensitizer that enhances thermosensitive sensitivity. This simplifies a process for manufacturing a thermosensitive recording medium using a printing plate and reduces the manufacturing costs.

Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mPa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mPa.s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mpa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: A single recording head is provided which includes a set of plural head units each having a substrate and plural recording elements arranged on the substrate, whereby a line type recording head which is long in a main scanning direction can be manufactured easily and in high yield. The head units are arranged to be inclined so that the rows of recording elements are inclined in the main scanning direction, whereby the arrangement pitch of recording elements in a sub scanning direction is narrowed to permit a high definition recording. The inclined arrangement of the head units, moreover, is made so that the recording elements located at the same position on the substrates of separate head units lie on the same main scanning line, whereby an increase of size in the sub scanning direction is prevented and a reduction of the entire size is attained.

Abstract: There is disclosed a liquid ink comprising a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and/or an aliphatic skeleton having a viscosity of 50 mPa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.

Abstract: In the present invention, a single recording head is constituted by a set of plural head units each having a substrate and plural recording elements arranged on the substrate, whereby a line type recording head which is long in a main scanning direction can be manufactured easily and in high yield. In the present invention, moreover, the head units are arranged to be inclined so that the rows of recording elements are inclined in the main scanning direction, whereby the arrangement pitch of recording elements in a sub scanning direction is narrowed to permit a high definition recording. Further, in the present invention, the inclined arrangement of head units is made so that the recording elements located at the same position on the substrates of separate head units lie on the same main scanning line, whereby an increase of size in the sub scanning direction is prevented and the reduction of the entire size is attained.

Abstract: An ink-jet recording apparatus according to the present invention, which records an image onto a recording medium by flying an ink-droplet from a surface of an ink by a pressure of ultrasonic beam, is characterized by comprising ultrasonic generating element array which has a plurality of ultrasonic elements arranged in array for emitting ultrasonic beams, driving means for applying a plurality of pulses having different phases each other to converging ultrasonic beams by interfering said plurality of ultrasonic beams with each other emitted from said ultrasonic generating elements of a part of said ultrasonic generating element array, which are simultaneously driven, with sequentially shifting said ultrasonic generating elements simultaneously driven to an array direction, and converging means for converging each of said plurality of ultrasonic beams in a direction of perpendicular to the array direction.

Abstract: An ink jet recording apparatus uses supersonic waves focused on an ink holding container to inject ink from the ink surface onto a recording medium. A piezoelectric element driven by a first driving signal serves as the supersonic wave generator. The piezoelectric element can also be driven by a second driving signal to effectively circulate the ink in the holding container. The second driving signal results in an acoustic pressure at the ink surface lower than the acoustic pressure necessary for injecting the ink onto a recording medium.

Abstract: An ink jet recording device comprises an ultrasonic generating element array having a plurality of ultrasonic generating elements, a driving circuit for emitting ink droplets for each of element groups by setting a predetermined number of the ultrasonic generating elements out of the plurality of ultrasonic generating elements as one element group to drive individually each of the ultrasonic generating elements in the element group in accordance with the driving data corresponding to the image data, a driving data series buffer for storing a driving data series comprising at least one set of driving data for driving each of the ultrasonic generating elements in the element group, and a driving data generation circuit for reading repeatedly the driving data series which is stored in the driving data series buffer to generate the driving data corresponding to the image data.

Abstract: An ink-jet recording apparatus records an image onto a recording medium by flying an ink-droplet from an ink surface by a pressure of an ultrasonic beam. The apparatus including an ultrasonic generating element array having a plurality of ultrasonic elements arranged in an array for emitting ultrasonic beams, a driving device for applying a plurality of pulses having different phases from each other, and a converging device for converging the ultrasonic beams by interfering the ultrasonic beams with each other. The generating elements are simultaneously driven and sequentially shifted in an array direction, and the converging device converging the ultrasonic beams in a direction perpendicular to the array direction.

Abstract: An ink jet recording apparatus includes an ink holding chamber, an ultrasonic wave generator having a piezoelectric transducer structure consisting of a piezoelectric member, and first and second electrodes formed on opposing surfaces of the piezoelectric member, and a driver for driving the piezoelectric transducer structure. The piezoelectric transducer structure is coupled acoustically with the ink liquid. The apparatus further includes ultrasonic wave focusing member formed on the ultrasonic wave generator and including an acoustic lens for focusing an ultrasonic wave generated from the ultrasonic wave generator in a vicinity close to a surface of the ink liquid, and a supporting member for supporting the ultrasonic wave generator on an opposite side to the ultrasonic wave focusing member.

Abstract: A driving circuit controls a time for applying a drive signal to a piezoelectric element so as to bring a control in the number of ink droplets squirted from a liquid surface of liquid ink according to a gray scale level of an image to be printed on a printed object. According to application of the drive signal, acoustic waves emitted from a piezoelectric element array are focused in a main scanning direction, made incident to an acoustic lens via an acoustic matching layer, further focused in a direction orthogonal to the main scanning direction and focused in a vicinity of the liquid surface in a point form. In the vicinity of the liquid surface, an ink liquid mound is formed by means of pressure (discharging pressure) generated by the focused acoustic waves and then from a tip of the ink liquid mound an ink droplet according to the application time is squirted. The squirted ink droplet is ejected and stuck to the printed object.

Abstract: A developing apparatus is disclosed which is disposed opposite to an electrostatic latent image holding member and adapted for developing an electrostatic latent image formed on the electrostatic latent image holding member to a visible image with a single component toner, the apparatus comprising a first toner carrier having a peripheral surface and being adapted for holding the single component toner on the peripheral surface, a first regulating member which is in contact with the first toner carrier, a second toner carrier having a peripheral surface and being adapted for holding the single component toner and for relatively approaching to or coming in contact with the first toner carrier so as to transfer the single component toner to the first toner carrier, and a second regulating member which is in contact with the second toner carrier, wherein the first toner carrier or the second toner carrier is adapted to relatively and selectively approach to or come in contact with the electrostatic latent image