Abstract: There is provided a drying device. Laser elements control energies of laser beams to be radiated, and radiates laser beams onto predetermined regions of an image, respectively. A controller controls average irradiation energy of laser beams by calculating printing rates for plural types of divided patterns with respect to the regions of the image, and calculating energy required to dry, for each divided pattern, based on the printing rates calculated for individual divided patterns, and selecting energy to be adopted according to a purpose, from the energy calculated for the individual divided patterns.

Abstract: A capacitive load driving circuit includes a first switching element, a second switching element, a third switching element, a fourth switching element and voltage dropper elements. The first switching element is provided on a first charging path extending from a power supply to a capacitive load. The second switching element is provided on a second charging path extending from a capacitor to the capacitive load. The third switching element is provided on a first discharging path extending from the capacitive load to a ground. The fourth switching element is provided on a second discharging path extending from the capacitive load to the capacitor. The voltage dropper elements are provided on each of control signal power supply paths to the first switching element, to the second switching element, to the third switching element and to the fourth switching element.

Abstract: A light-emitting device includes multiple transfer elements, multiple setting elements, multiple light-emitting elements, and a controller. The transfer elements sequentially enter an on state. The setting elements are connected to the transfer elements. In response to the transfer elements entering the on state, the setting elements are allowed to enter an on state. Each of the light-emitting elements is connected to a corresponding one of the setting elements. In response to each of the setting elements entering the on state, the corresponding one of the light-emitting elements enters an on state to emit light or increase a light emission intensity thereof. The light-emitting elements are maintained in the on state in parallel. The controller controls the setting elements to enter the on state in accordance with a received illumination control signal, and controls an illumination period of the light-emitting elements.

Abstract: There is provided a drying device. Laser elements control energies of laser beams to be radiated, and radiates laser beams onto predetermined regions of an image, respectively, A controller controls average irradiation energy of laser beams by calculating printing rates for plural types of divided patterns with respect to the regions of the image, and calculating energy required to dry, for each divided pattern, based on the printing rates calculated for individual divided patterns, and selecting energy to be adopted according to a purpose, from the energy calculated for the individual divided patterns.

Abstract: A capacitive load driving circuit includes a first switching element, a second switching element, a third switching element, a fourth switching element and voltage dropper elements. The first switching element is provided on a first charging path extending from a power supply to a capacitive load. The second switching element is provided on a second charging path extending from a capacitor to the capacitive load. The third switching element is provided on a first discharging path extending from the capacitive load to a ground. The fourth switching element is provided on a second discharging path extending from the capacitive load to the capacitor. The voltage dropper elements are provided on each of control signal power supply paths to the first switching element, to the second switching element, to the third switching element and to the fourth switching element.

Abstract: A laser driving control apparatus includes: a driver that constant-voltage drives a laser light source that radiates laser light by supplying a pulse signal in which a plurality of pulses, each pulse width thereof being changeable, is generated at a predetermined cycle; and a controller that performs control to change the pulse width of each of the plurality of pulses so that a first change amount of the pulse width when a present-time pulse width is changed to a preceding pulse width prior to reaching a pulse width at which a target light quantity is obtained stably is larger than a second change amount of the pulse width when the present-time pulse width is changed to a target pulse width corresponding to a driving current at an ON time of the laser light source in a steady state in which the target light quantity is obtained stably.

Abstract: A laser driving control apparatus includes: a driver that constant-voltage drives a laser light source that radiates laser light by supplying a pulse signal in which a plurality of pulses, each pulse width thereof being changeable, is generated at a predetermined cycle; and a controller that performs control to change the pulse width of each of the plurality of pulses so that a first change amount of the pulse width when a present-time pulse width is changed to a preceding pulse width prior to reaching a pulse width at which a target light quantity is obtained stably is larger than a second change amount of the pulse width when the present-time pulse width is changed to a target pulse width corresponding to a driving current at an ON time of the laser light source in a steady state in which the target light quantity is obtained stably.

Abstract: A light-emitting device includes multiple transfer elements, multiple setting elements, multiple light-emitting elements, and a controller. The transfer elements sequentially enter an on state. The setting elements are connected to the transfer elements. In response to the transfer elements entering the on state, the setting elements are allowed to enter an on state. Each of the light-emitting elements is connected to a corresponding one of the setting elements. In response to each of the setting elements entering the on state, the corresponding one of the light-emitting elements enters an on state to emit light or increase a light emission intensity thereof. The light-emitting elements are maintained in the on state in parallel. The controller controls the setting elements to enter the on state in accordance with a received illumination control signal, and controls an illumination period of the light-emitting elements.

Abstract: A drying device includes: a plurality of laser elements that emit laser beams with controllable intensity and respectively emit the laser beams such that the emitted laser beams partially overlap one another; and a controller that controls the intensity of the laser beams emitted from the plurality of laser elements so as to obtain intensity corresponding to drying intensity set as intensity for drying liquid droplets in a case where at least a part of an image region formed by the liquid droplets ejected in accordance with image information is included in an irradiation region of the laser beams emitted from the plurality of laser elements.

Abstract: A drying device includes: a plurality of laser elements that emit laser beams with controllable intensity and respectively emit the laser beams such that the emitted laser beams partially overlap one another; and a controller that controls the intensity of the laser beams emitted from the plurality of laser elements so as to obtain intensity corresponding to drying intensity set as intensity for drying liquid droplets in a case where at least a part of an image region formed by the liquid droplets ejected in accordance with image information is included in an irradiation region of the laser beams emitted from the plurality of laser elements.

Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.

Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.

Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.

Abstract: A light emitting elements drive control device includes: a detection unit that detects drive voltages and drive currents of a plurality of respective semiconductor light emitting elements arranged in a width direction of a recording medium; a calculation unit that calculates generated heat amounts of the respective semiconductor light emitting elements from heating-raised temperatures of the respective semiconductor light emitting elements determined based on the drive voltages and the drive currents detected by the detection unit, and calculates actual emission light quantities of the semiconductor light emitting elements from differences between the generated heat amounts of the semiconductor light emitting elements and input heat amounts corresponding to powers supplied to the semiconductor light emitting elements, respectively; and a correction unit that corrects differences between the actual emission light quantities of the semiconductor light emitting elements calculated by the calculation unit and req

Abstract: A light emitting elements drive control device includes: a detection unit that detects drive voltages and drive currents of a plurality of respective semiconductor light emitting elements arranged in a width direction of a recording medium; a calculation unit that calculates generated heat amounts of the respective semiconductor light emitting elements from heating-raised temperatures of the respective semiconductor light emitting elements determined based on the drive voltages and the drive currents detected by the detection unit, and calculates actual emission light quantities of the semiconductor light emitting elements from differences between the generated heat amounts of the semiconductor light emitting elements and input heat amounts corresponding to powers supplied to the semiconductor light emitting elements, respectively; and a correction unit that corrects differences between the actual emission light quantities of the semiconductor light emitting elements calculated by the calculation unit and req

Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.

Abstract: A charged particle generator includes a first electrode, a second electrode, and an insulating material that is provided between the first electrode and the second electrode. The second electrode has an opening that opens in a first direction in which the first electrode, the insulating material, and the second electrode are arranged. The insulating material has a region limiting space. The region limiting space corresponds to the opening. The region limiting space is continuous with the opening. The region limiting space is a space that opens in a direction in which the region limiting space is oriented toward the opening and that is limited in a second direction perpendicular to the first direction. The first electrode has an anisotropic resistance portion in which a resistance component in the first direction is smaller than a resistance component in the second direction.

Abstract: A charged particle generator includes a first electrode, a second electrode, and an insulating material that is provided between the first electrode and the second electrode. The second electrode has an opening that opens in a first direction in which the first electrode, the insulating material, and the second electrode are arranged. The insulating material has a region limiting space. The region limiting space corresponds to the opening. The region limiting space is continuous with the opening. The region limiting space is a space that opens in a direction in which the region limiting space is oriented toward the opening and that is limited in a second direction perpendicular to the first direction. The first electrode has an anisotropic resistance portion in which a resistance component in the first direction is smaller than a resistance component in the second direction.

Abstract: A light emitting device is provided with: a self-scanning light emitting element array that includes light emitting elements divided into plural groups, light-controlled for each of the groups, and arrayed in line; and a light-up controller that sets any one of a voltage and a current for light-up, in accordance with the number of light emitting elements intended to light up in each of the groups.

Abstract: A total layer thickness detection apparatus for a charged body includes: a saturated charge amount detection unit that detects a saturated charge amount of a charged body having plural coating layers with mutually different relative dielectric constants; a storage unit that stores relation information indicating relation of change of the saturated charge amount of the charged body with respect to a change of layer thickness of a surface layer of the charged body; and a calculation part that calculates a total layer thickness of the plural coating layers of the charged body based on the change of the saturated charge amount detected by the saturated charge amount detection unit and the relation information stored in the storage unit.