Abstract: The present invention relates to a skin cleanser composition capable of providing an excellent frictional resistance feeling during rinsing and capable of giving an excellent silky feeling with moisturization to the skin after drying, and to a method for producing the composition. The skin cleanser composition contains a cat ionized hydroxypropyl cellulose (A) and a surfactant (B), and the cationized hydroxypropyl cellulose (A) has an anhydroglucose-derived main chain, and has a degree of substitution with cationized ethyleneoxy group of from 0.01 to 3.0 and a degree of substitution with propyleneoxy group of from 0.01 to 2.9.

Abstract: The present invention relates to a process for producing a cationic hydroxypropyl cellulose including the step of reacting a low-crystalline powdery cellulose with a cationizing agent represented by the following general formula (1) and/or a cationizing agent represented by the following general formula (2), and propylene oxide in the presence of water in an amount of from 10 to 60% by mass on the basis of the low-crystalline powdery cellulose, and a catalyst: wherein R1 to R3 are each independently a linear or branched hydrocarbon group having 1 to 4 carbon atoms; and X and Z are each a halogen atom and may be the same or different from each other.

Abstract: The present invention relates to a hair cosmetic composition including a surfactant and a cationized hydroxypropyl cellulose, wherein the cationized hydroxypropyl cellulose contains a main chain derived from an anhydroglucose represented by the following general formula (1) and has a cationized ethyleneoxy group substitution degree of from 0.01 to 2.5 and a propyleneoxy group substitution degree of from 0.1 to 2.8, wherein R1, R2 and R3 are each independently a substituent group including a cationized ethyleneoxy group and a propyleneoxy group; and n represents an average polymerization degree of the anhydroglucose and is a number of from 50 to 5000. The hair cosmetic composition of the present invention exhibits a less stickiness after use and is capable of imparting excellent run fingers through hair, coating feel and manageability to hair.

Abstract: The present invention relates to a skin cleanser composition capable of providing an excellent frictional resistance feeling during rinsing and capable of giving an excellent silky feeling with moisturization to the skin after drying, and to a method for producing the composition. The skin cleanser composition contains a cat ionized hydroxypropyl cellulose (A) and a surfactant (B), and the cationized hydroxypropyl cellulose (A) has an anhydroglucose-derived main chain, and has a degree of substitution with cationized ethyleneoxy group of from 0.01 to 3.0 and a degree of substitution with propyleneoxy group of from 0.01 to 2.9.

Abstract: A hair processing composition contains an alkoxysilane (1); an organic acid; and water and has a pH in a range of from 2 to 5. A method for processing hair includes mixing while stirring the above-described hair processing composition and allowing a silanol compound (2) produced through hydrolysis of the alkoxysilane (1) represented by general formula (1) to penetrate into the hair. A method for processing hair further includes applying to hair an acidic aqueous solution or an alkaline aqueous solution after the silanol compound (2) has penetrated into the hair to accelerate the polymerization of the silanol compound. R1pSi(OR2)4-p??(1) R1pSi(OH)n(OR2)4-p-n??(2) wherein R1 and R2 represent a C1-C6 alkyl group or a C2-C6 alkenyl group, p represents an integer of from 0 to 3, and n represents an integer of not less than 1 and not more than (4?p).

Abstract: The present invention relates to a hair cosmetic composition including a surfactant and a cationized hydroxypropyl cellulose, wherein the cationized hydroxypropyl cellulose contains a main chain derived from an anhydroglucose represented by the following general formula (1) and has a cationized ethyleneoxy group substitution degree of from 0.01 to 2.5 and a propyleneoxy group substitution degree of from 0.1 to 2.8, wherein R1, R2 and R3 are each independently a substituent group including a cationized ethyleneoxy group and a propyleneoxy group; and n represents an average polymerization degree of the anhydroglucose and is a number of from 50 to 5000. The hair cosmetic composition of the present invention exhibits a less stickiness after use and is capable of imparting excellent run fingers through hair, coating feel and manageability to hair.

Abstract: The present invention relates to a process for producing a cationic hydroxypropyl cellulose including the step of reacting a low-crystalline powdery cellulose with a cationizing agent represented by the following general formula (1) and/or a cationizing agent represented by the following general formula (2), and propylene oxide in the presence of water in an amount of from 10 to 60% by mass on the basis of the low-crystalline powdery cellulose, and a catalyst: wherein R1 to R3 are each independently a linear or branched hydrocarbon group having 1 to 4 carbon atoms; and X and Z are each a halogen atom and may be the same or different from each other.

Abstract: A fixing device according to an embodiment of the present invention heats a metal conductive layer of a heat roller using an induction current generating coil. In order to supplement a heat capacity of the heat roller, a press roller having a large heat capacity is heated by a halogen lamp. During a start of activation of an image forming apparatus, when a printer control circuit is started, the supply of electric power to the halogen lamp is started before warming-up is started.

Abstract: In a heat roller of a fixing apparatus according to an embodiment of the present invention, a sleeve is slidable with respect to a supporting roller. Flanges that regulate the sleeve have smooth surfaces, are arranged at gaps apart from a foamed rubber layer of the supporting roller, and freely rotate with respect to the supporting roller. Edges at both ends of the foamed rubber layer of the supporting roller are formed in an R shape and set shorter than the length of a body of the press roller. The sleeve has markings for detecting a state of the heat roller.

Abstract: In a fixing apparatus of an embodiment of the invention, a heat roller forwardly and reversely rotated by a drive motor capable of forwardly and reversely rotating is heated by an induction heating coil also when it is reversely rotated. Further, the roller control temperature of the heat roller by a control system is adjusted according to a time of forward rotation of the heat roller and a time of reverse rotation, or a time when the heat roller and a press roller are separated from each other and a time when they are in contact with each other. Besides, after a specified time has passed since an instruction of reverse rotation or forward rotation by a drive signal, output of the induction heating coil is tuned on.

Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. At the room temperature, the outer diameter of the elastic roller is smaller than the inner diameter of the metal belt. On the other hand, when the elastic roller is thermally expanded, the metal belt and the elastic roller fit onto each other in a state in which the metal belt fastens the elastic roller.

Abstract: A fixing apparatus according to an embodiment of the present invention controls, using a CPU and a temperature comparator, an inverter circuit that supplies electric power to an induction heating coil and performs temperature control for a heat roller. The CPU adjusts and controls a power value supplied by the inverter circuit. When the adjustment and control of the power value by the CPU is late, the inverter circuit is ON-OFF controlled by the temperature comparator.

Abstract: A fixing unit that heat-fixes the toner image onto the sheet, has an information acquisition section that acquires information concerning a factor causing the input voltage which is supplied to a heater for heating the heating roller to vary; a temperature setting section that sets a target temperature of the heater based on the information acquired by the information acquisition section; and a temperature controller that controls the temperature of the heater such that the heating roller becomes the target temperature set by the temperature setting section.

Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. At the room temperature, the outer diameter of the elastic roller is smaller than the inner diameter of the metal belt. On the other hand, when the elastic roller is thermally expanded, the metal belt and the elastic roller fit onto each other in a state in which the metal belt fastens the elastic roller.

Abstract: A fixing unit that heat-fixes the toner image onto the sheet, has an information acquisition section that acquires information concerning a factor causing the input voltage which is supplied to a heater for heating the heating roller to vary; a temperature setting section that sets a target temperature of the heater based on the information acquired by the information acquisition section; and a temperature controller that controls the temperature of the heater such that the heating roller becomes the target temperature set by the temperature setting section.

Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. At the room temperature, the outer diameter of the elastic roller is smaller than the inner diameter of the metal belt. On the other hand, when the elastic roller is thermally expanded, the metal belt and the elastic roller fit onto each other in a state in which the metal belt fastens the elastic roller.

Abstract: An image forming apparatus contains an image forming section; a fixing unit configured to heat the toner image by a heater to fix on the sheet; a power source section; an acquisition section configured to acquire a voltage value of the input power source; a sensor configured to detect a temperature of the fixing unit; and a controller configured to control the heater to stabilize the temperature at a first temperature upon acquiring a first voltage value as the voltage value by the acquisition section, and configured to control the heater to stabilize the temperature at a second temperature upon acquiring a second voltage value as the voltage value by the acquisition section, the first voltage value being lower than the second voltage value, the first temperature being higher than the second temperature.

Abstract: The present invention relates to a process for producing a cellulose ether derivative in an industrially convenient and efficient manner by reacting a low-crystalline powdery cellulose with an epoxy compound in the presence of a catalyst.

Abstract: In a drive detection device for a fixing device according to an embodiment of the present invention, a non-paper passing area of a heat roller is formed by a surface where a metal conductive layer is exposed and a surface where a silicon rubber layer is exposed. The drive detection device has an infrared temperature sensor that detects the temperature of the non-paper passing area. When a detection result of the infrared temperature sensor is fluctuated a fixed amount or more in a predetermined time, the drive detection device determines that the heat roller is rotating. Otherwise, the drive detection device determines that the heat roller is not rotating.

Abstract: A fixing device according to an embodiment of the present invention includes a microcomputer that exclusively performs temperature control for the fixing device. The microcomputer periodically calculates electric power that can be supplied to the fixing device. The microcomputer detects the temperature of the fixing device and the temperature in a printer unit and feedback-controls electric power supplied to the fixing device.