Ricoh Patente

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A liquid discharge apparatus (100) includes a conveyor (8), a liquid discharger (12), a maintenance device (45), a position changer (50), a position detector (30), and circuitry (9). The conveyor (8) conveys an object in a first direction. The liquid discharger (12) discharges a liquid onto the object at a first position. The liquid discharger (12) includes a full-width head extending in a second direction intersecting the first direction. The maintenance device (45) maintains a discharge state of the liquid discharger (12) at a second position away from the first position. The position changer (50) moves the liquid discharger (12) between the first position and the second position. The position detector (30) detects a position of the object. The circuitry (9) causes the position changer (50) to change a head position of the liquid discharger (12) in response to the position of the object detected by the position detector (30).

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A liquid discharge apparatus (10) includes a head (3), a driver (2), and circuitry (1). The head (3) has multiple nozzles (321) and discharges a liquid from each of multiple nozzles (321) to an object (200) in a flight direction to form a film on a surface of the object (200). The driver (2) moves at least one of the head (3) and the object (200) relative to other of the head (3) and the object (200). The circuitry (1) determines an amount of the liquid discharged from each of the multiple nozzles (321) based on a flight angle between the flight direction and a normal direction of the surface of the object (200) for each of the multiple nozzles (321) and causes the head (3) to discharge the liquid from each of the multiple nozzles (321) for the amount of the liquid determined for each of the multiple nozzles (321).

An electrode manufacturing apparatus (1) includes: an applier (5) configured to apply a liquid composition (24) to form an insulating layer (21) onto an electrode base (9) or a functional layer (12) on the electrode base (9); a controller (40) configured to control the applier (5); and a surface detector (8) configured to detect a surface condition of the liquid composition (24) or the insulating layer (21) on the electrode base (9) or the functional layer (12), wherein the controller (40) controls the applier (5) based on the surface condition of the liquid composition (24) or the insulating layer (21) detected by the surface detector (8).

A head unit (HU) includes a liquid discharge head (100) and circuitry (500). The liquid discharge head (100) includes a nozzle plate (101) having a nozzle (102), a liquid chamber (114) to store a liquid to be discharged from the nozzle (102), a valve body (130) in the liquid chamber (114), a valve body coupler (131) coupled to the valve body (130), and a driver (132) to drive the valve body coupler (131) to move the valve body (130). The valve body (130) is movable between a contact position at which the valve body (130) contacts the nozzle plate (101) to close the nozzle (102) and a separated position at which the valve body (130) is separated from the nozzle plate (101) to open the nozzle (102). The circuitry (500) moves the valve body (130) between the contact position and the separated position to open and close the nozzle (102) in a first operation, and applies vibration to the valve body (130) while the valve body (130) is temporarily held at the separated position in a second operation.

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A spectral-characteristic acquisition apparatus (10) and a method of obtaining spectral characteristics. The spectral-characteristic acquisition apparatus (10) includes a conveyor (30, 31, 32) including a first conveyance roller pair disposed in a conveyance direction in which an object (100) is conveyed and a second conveyance roller pair disposed downstream from the first conveyance roller pair in the conveyance direction, a sensor (42) configured to detect that the object (100) has reached the second conveyance roller pair, a controller (300) configured to control the second conveyance roller pair to drive by a predetermined amount with a driving force greater than a driving force of the first conveyance roller pair upon detecting that the object (100) has reached the second conveyance roller pair by the sensor (42), and to stop driving, a color data obtainer (20) configured to obtain color data from the object (100) at a position where the object (100) stops moving, and a spectral-characteristic computing unit (113) configured to estimate a spectral characteristic of the object (100) based on the color data obtained by the color data obtainer (20).

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A powder replenisher (1) includes a pressure adjuster (10) that increases and decreases operating pressure applied to a variable capacity portion (5a). A controller (100) performs a precise replenishing mode in which, after the controller (100) determines that a powder replenishment container (7) is replenished with powder in a predetermined amount, while the controller (100) controls a powder measuring instrument (9) to measure an amount of the powder inside the powder replenishment container (7), the controller (100) controls the pressure adjuster (10) to replenish the powder replenishment container (7) with the powder in a target amount. The controller (100) controls the pressure adjuster (10) to replenish the powder replenishment container (7) with the powder while the controller (100) controls the pressure adjuster (10) based on the operating pressure detected by an operating pressure detector (14) in the precise replenishing mode.

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A recording-head position adjustment mechanism (150) adjusts a position of a recording head (10) that discharges liquid droplets. The recording-head position adjustment mechanism (150) includes a supporting member (100) and a discharge angle adjuster (56; 57). The supporting member (100) includes an upper support (21Aa; 21Ba) to support an upper portion of the recording head (10) and a lower support (21Ab; 21Bb) to support a lower portion of the recording head (10). The discharge angle adjuster (56; 57) swings the lower portion around the upper portion as a fulcrum to adjust a discharge direction of the liquid droplets from the recording head (10).

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A heating device (300) includes a rotating member (310) having an endless form, a heater (361) disposed inside a loop of the rotating member (310), a pressing member (320) disposed opposite the rotating member (310), a nip formation member (380), a first temperature sensor (381), and a second temperature sensor (382). The nip formation member (380) contacts an inner circumferential surface of the rotating member (310) to form a nip (SN) between the pressing member (320) and the rotating member (310). The first temperature sensor (381) is configured to detect a temperature of the nip formation member (380), and the second temperature sensor (382) is configured to detect a temperature of the rotating member (310).

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An image forming method includes applying a pretreatment liquid to a first area (11) on an object having permeability, applying ink to the first area (11) applied with the pretreatment liquid to form an image in the first area (13, 14), the ink containing an organic solvent seeping into a second area (17) around a circumference of the image in the first area (13, 14) and applying a colorless liquid containing water to the second area (17) to diffuse the organic solvent in the second area.

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