摘要:
An image forming apparatus includes an apparatus body, a recording head, a sub tank, a carriage, a main tank, a liquid feed device, a displacement member, a first detector, a second detector, a detection retainer, a liquid consumption amount measuring device, and a supply controller. The measuring device measures a consumption amount of liquid in the sub tank when the displacement member displaces from a first position in a direction in which the consumption amount of liquid in the sub tank decreases. When a detection output of the first detector continues to be, for a predetermined time or number of times, in a detection state in which the first detector detects the displacement member and shifts from the detection state to a non detection state in which the first detector does not detect the displacement member, the measuring device starts measuring the consumption amount of liquid in the sub tank.
摘要:
An image forming apparatus includes a recording head including plural nozzles discharging liquid droplets; a head tank supplying liquid to the recording head; plural head holders each holding one or more recording heads and head tanks; a carriage exchangeably supporting the plural head holders; a main tank storing liquid to be supplied to the head tank; and plural liquid supply tubes supplying the liquid from the main tank to the head tank. Further, the plural liquid supply tubes are branched into plural groups corresponding to the plural head holders at the carriage and are connected to corresponding head tanks.
摘要:
An image forming apparatus includes an apparatus body, a recording head, a head tank, a carriage, a main tank, a liquid feed device, a supply controller, a displacement member, a first detector, and a second detector. When a consumption amount of liquid in the head tank reaches a threshold value, the controller controls the feed device to start supplying the liquid from the main tank to the head tank. When printing operation is not performed and the displacement member is at a position at which a remaining amount of the liquid in the head tank is smaller than when the displacement member is at a first position, the controller controls the feed device to supply the liquid until the displacement member is placed at the first position or a position at which the remaining amount of the liquid is greater than when the displacement member is at the first position.
摘要:
A conveying device includes a sheet feeder that feeds a recording medium unreeled from a roll, a conveying roller that conveys the recording medium, and circuitry. The circuitry is to obtain a plurality of actual conveyance amounts each of which is a conveyance amount of the recording medium actually conveyed by the conveying roller at a time, calculate an adjustment value based on a difference between a target conveyance amount and each of the plurality of actual conveyance amounts to obtain a plurality of adjustment values, calculate an approximate line based on a plurality of adjustment points in a two-dimensional coordinate plane determined by the adjustment value and a diameter of the roll, specify an adjustment value corresponding to a current diameter of the roll based on the approximate line, and correct, based on the specified adjustment value, a conveyance amount by which the conveying roller conveys the recording medium.
摘要:
An image forming apparatus includes a sheet conveyance device; an image forming device including a sheet conveyance roller and a pressure roller; a memory; and a controller. The memory stores profile data indicating variation in conveyance amount in a circumferential direction due to eccentricity of the conveyance roller. The controller calculates, in intermittent conveyance processing, a correction value based on corresponding profile data for each of positions included in a width of an image to be formed in next image forming processing, the correction value being a difference between a predetermined conveyance amount and an actual conveyance amount; corrects a reference amount of rotation by a representative value of calculated correction values to calculate a corrected amount of rotation, the reference amount being an ideal amount of rotation of the conveyance roller that conveys a sheet by the predetermined conveyance amount; and rotates the conveyance roller by the corrected amount.
摘要:
A liquid ejection apparatus includes a conveying unit, a winding unit, a printing unit, and a rotation control unit. The conveying unit is configured to intermittently convey a printing medium by a predetermined feed amount. The winding unit is configured to wind the printing medium conveyed by the conveying unit. The printing unit is configured to perform printing on the conveyed printing medium. The rotation control unit is configured to control the winding unit to rotate in a winding direction at a predetermined timing after the conveying unit has started to convey the printing medium intermittently, and then cause the winding unit to rotate in a reverse direction opposite to the winding direction.
摘要:
A medium-cutting device includes a medium-conveyance section to convey a medium in a medium-conveyance direction, a cutter to cut the medium conveyed by the medium-conveyance section, and a pushing part to push up a piece of the medium that is cut from the medium with the cutter.
摘要:
An image forming apparatus includes a paper feeding unit; an image formation unit; a conveyance unit configured to clamp and convey a recording medium; a paper ejection unit; a manual paper feeding unit configured to receive another recording medium inserted manually and feed the other recording medium from the paper ejection unit; and a switching member fixed on an axle and configured to move between a retracted position, which is retracted from a conveyance path in a case where the image formation unit forms an image, and an abutting position entering the conveyance path by rotating with a rotation of the axle. In a case of feeding the other recording medium manually inserted, the switching member is arranged at the abutting position, clamping by the conveyance unit is released, the other recording medium arrives at an abutment position, and the conveyance unit clamps the other recording medium.
摘要:
An image forming apparatus includes an apparatus body, a recording head, head tanks, a carriage, main tanks, a liquid feeder, a liquid feed controller, a displacement member, a carriage-side sensor, and a body-side sensor. The liquid feed controller controls the carriage-side sensor to detect the displacement member of each head tank during a single scan of the carriage; obtains a current position of the displacement member; determines a liquid amount in each head tank or adjustment operation of the liquid amount based on both a comparison result of the current position and a determination position and a detection result of the carriage-side sensor, the determination position calculated from a detection position of the displacement member detected with the carriage-side sensor and set within a range in which the carriage-side sensor detects the displacement member; controls the feeder in accordance with a determination result; and adjusts the liquid amount.
摘要:
In an image forming apparatus, a liquid supply control processor controls to detect and store a difference amount corresponding to a displacement amount of a displacing member between a position detected by a first sensor and another position detected by a second sensor: measure a consumed liquid amount; start the liquid supply upon the consumed liquid amount reaching a predetermined threshold so as to supply the difference amount after the first sensor has detected the displacing member; and stop the liquid supply when the first sensor does not detect the displacing member before a preset predetermined time has passed. The control processor controls the image forming apparatus such that, when the liquid supply is performed without using the second sensor, using a first and second predetermined threshold times and the first threshold time is set longer than the second threshold time.