Abstract: A fixing device includes a fixing rotating member, a heater, a fixing pad, a pressurizing member, a lubricant, and a surface layer. The fixing rotating member is configured to fix a toner image on a recording medium and is heated by the heater. The fixing pad is positioned on an inner circumferential side of the fixing rotating member, and presses the fixing rotating member from the inner circumferential side. The pressurizing member faces an outer circumferential surface of the fixing rotating member, and forms a nip for fixing between the pressurizing member and the fixing rotating member. The lubricant is applied to the fixing rotating member. The surface layer is disposed in a vicinity of an end portion of a pressurizing surface of the fixing pad and returns the lubricant to a longitudinal central side of the pressurizing surface.
Abstract: An image forming apparatus includes an apparatus body including an opening portion, a cover configured to cover the opening portion in a state being closed, a cartridge configured to be attached to and detached from the apparatus body through the opening portion, a sheet discharge portion including a first rotary member and a second rotary member configured to nip and discharge the sheet, and a supporting portion configured to rotatably support the first rotary member and move to a first position where the first rotary member overlaps with a movement locus of the cartridge and to a second position where the first rotary member does not overlap with the movement locus, the movement locus being a passage area through which the cartridge passes while being attached to and detached from the apparatus body.
Abstract: In an example, a method includes applying a liquid print agent comprising a carrier fluid to a photoconductive surface and reducing a proportion of the carrier fluid in the liquid print agent on the photoconductive surface at a first location during a print cycle of a print apparatus. The method may further include, during a non-print cycle of the print apparatus, adding carrier fluid to the photoconductive surface at the first location.
Abstract: A change of a magnetic flux density distribution adjacent to a regulating blade 9 opposed to a developer regulation pole is suppressed at a low cost, while suppressing influence to design latitude of magnetic poles. A position on the outer peripheral surface of the developing sleeve where the magnetic flux density in the normal line direction of the outer peripheral surface of the developing sleeve is a maximum value position. The position on the outer peripheral surface of the developing sleeve 8 corresponding to a center portion position of the half peak range of the magnetic flux density distribution of the developer regulation pole is called half peak center portion.
Abstract: An image fixing device including a cylindrical film, a heater, and a heat conduction member. The cylindrical film is contactable with toner unfixed on a sheet. The heater includes a substrate and a heat generating resistor provided on the substrate. The heat conduction member has a thermal conductivity higher than that of the substrate and is on a side of the substrate opposite from the heat generating resistor. The substrate is provided with non-insulating wiring patterns on a side opposite from the side provided with the heat generating resistor with respect to a direction perpendicular to a recording material feeding direction. The heat conduction member is in contact with one of the wiring patterns and is in contact with the substrate from a position of the substrate outside of an end of the heat generating resistor toward a central portion.
Abstract: Embodiments disclosed herein generally relate to a heater, comprising an insulator substrate, a first member, a plurality of electrodes, and a second member. The first member is configured to generate heat on an upper surface of the insulator substrate across a first direction. The first member has a first end opposite a second end. The plurality of electrodes are formed on both the first end and the second end of the first member, respectively, and each electrode is disposed in a direction perpendicular to the first direction. The second member is configured to store heat. The second member comprises a latent heat material having latent heat in a target temperature zone. Furthermore, the latent heat material is fixed to a side surface or a bottom surface of the insulator substrate.
Abstract: Provided is an endless belt which can improve rotational durability when compared to a conventional endless belt. This endless belt is formed in a tubular shape and is used for electronic photographing apparatuses. The endless belt has an edge part which is formed on at least one belt edge in the belt width direction and which has an end that is tapered toward the outside of the belt width direction. The edge part can be configured by a first edge part formed by intersecting an outer inclined surface with a belt inner circumferential surface, a second edge part configured by intersecting an inner inclined surface with a belt outer circumferential surface, or a third edge part configured by intersecting the outer inclined surface with the inner inclined surface.
Abstract: A nozzle insertion member is in a powder container that includes a nozzle insertion opening into which a conveying nozzle is inserted. The nozzle insertion member includes an opening/closing structure to move to an opening position to open the nozzle insertion opening by being pressed by the inserted conveying nozzle, and to a closing position to close the nozzle insertion opening when the conveying nozzle is separated from the nozzle insertion member, and a seal arranged at the nozzle insertion opening and including a through hole into which the conveying nozzle is insertable. The opening/closing structure includes a front cylindrical portion to contact with an inner surface of the through hole, and a slide area formed on another side relative to the front cylindrical portion. W1<W4 is satisfied, where W1 is an inner diameter of the through hole, and W4 is an outer diameter of the slide area.
Abstract: A cartridge includes a rotatable member, a rotatable rotational force receiving member, a preventing member including an accommodating portion, a rotatable coupling member including a free end portion which includes a rotational force receiving portion and including a connecting portion connected with the preventing portion to be partly accommodated in the accommodating portion so that a rotational axis of the coupling member permits tilting thereof relative to a rotational axis of the rotational force receiving member, a shaft portion. The preventing member includes a supporting portion for supporting ends of the shaft portion so as to prevent the shaft portion from moving in a rotational direction of the rotatable member to transmit the rotational force received from the shaft portion via the supporting portion to the rotational force receiving member.
Abstract: A stapler includes a staple cartridge in which a staple is stored, a storage unit to which the staple cartridge is detachably attached, a staple ejecting unit which ejects the staple to penetrate a paper sheet, a cutting unit which cuts a staple leg of the staple penetrating the paper sheet, a binding unit which bends the staple leg of the staple penetrating the paper sheet to bind the paper sheet, a cut staple storage unit which stores a cut staple that is cut by the cutting unit, a cut staple quantity detection unit which detects a quantity of the cut staple stored in the cut staple storage unit, and a discharge unit through which the cutting unit and the cut staple storage unit communicate with each other to guide the cut staple to the cut staple storage unit. The cut staple storage unit is attachable to and detachable from the stapler.
Abstract: It is desired to reduce deformation of reflecting surfaces of a rotatable polygon mirror that is formed by using resin molding. The rotatable polygon mirror that is formed by resin molding is provided with recesses.
Abstract: A developing cartridge includes: a casing configured to accommodate therein toner; a developing roller; a supply roller configured to supply the toner to the developing roller; a layer thickness regulation blade in contact with a circumferential surface of the developing roller; a developing electrode electrically connected to the developing roller; and a supply electrode electrically connected to the supply roller and the layer thickness regulation blade. The supply electrode includes: an electrode member electrically connected to a rotation shaft of the supply roller and movable in a direction perpendicular to the rotation shaft; and a connection member in contact with and electrically connecting the electrode member and the layer thickness regulation blade. The electrode member is movable relative to the connection member in the direction perpendicular to the rotation shaft in a state where the electrode member is in contact with the connection member.
July 30, 2019
Date of Patent:
May 12, 2020
BROTHER KOGYO KABUSHIKI KAISHA
Atsushi Fukaya, Tomoya Ichikawa, Koji Abe, Naoya Kamimura
Abstract: An image forming apparatus including a sheet storage portion in which a plurality of sheets is stored; a heater which heats air; a fan which sprays air on the sheet stored in the sheet storage portion; and a controller which controls the heat of the heater and controls the drive of the fan, in which the controller controls the heat of the heater at a first temperature before a drive time of the fan reaches a threshold value set in advance, the drive time being in which the fan sprays air heated by the heater on the sheet, and when the drive time of the fan reaches or exceeds the threshold value set in advance, controls the heat of the heater at a second temperature lower than the first temperature.
Abstract: In a heater including a plurality of first temperature detection elements that are arranged at predetermined intervals in a longitudinal direction of a substrate and respectively output temperature signals individually, and a plurality of second temperature detection elements that are arranged at predetermined intervals in positions that differ from the positions of the first temperature detection elements in a lateral direction that is orthogonal to the longitudinal direction but correspond to the positions of at least some of the plurality of first temperature detection elements in the longitudinal direction, and that output a single temperature signal obtained by adding individual temperature signals together, the individual temperature signals included in the single temperature signal are acquired on the basis of the plurality of temperature signals output by the plurality of first temperature detection elements and the single temperature signal.
Abstract: An image forming apparatus that forms an image on continuous paper, includes: an image former that forms an image on the continuous paper; a conveyer that conveys the continuous paper in a forward direction that is a conveyance direction at a time of image formation and conveys the continuous paper to the image former; an image diagnosis part that detects abnormality of the image formed by the image former and performs diagnosis of a degree of the detected abnormality; and a hardware processor that switches whether to continue conveyance of the continuous paper in the forward direction according to a result of the diagnosis of the image performed by the image diagnosis part.
Abstract: A cleaning device has a housing where an opening and a toner storage portion are formed, a cleaning member arranged in the opening, a collection roller collecting toner attached to the cleaning member, a blade scraping off toner attached to the collection roller, a sheet member dividing between the toner storage portion and the opening, and a sealing member arranged to be in contact with the housing and both end parts of the outer circumferential surface of the collection roller in the axial direction. A first region having a predetermined surface roughness is formed in a middle part of the circumferential surface of the collection roller in the axial direction, and a second region having a lower surface roughness than the first region is formed next to both end parts of the first region in the axial direction.
Abstract: An image forming apparatus, including: an image former; a sheet detection sensor; an image reader; and a hardware processor that: detects an image abnormality by analyzing the read image data and obtains a position in a sheet conveyance direction of the detected image abnormality in the read image data for each piece of the read image data corresponding to each of the sheets; estimates a conveyance interval of the plurality of sheets based on a detection result by the sheet detection sensor, and determines whether a specific periodicity exists based on the estimated conveyance interval and the position of the image abnormality detected from the read image data corresponding to each of the sheets; and when the specific periodicity is determined to exist, estimates a part corresponding to the specific periodicity as a failure point.
Abstract: An image forming apparatus capable of making a match between the orientation of a reference side of a sheet along which punched holes are formed and the orientation of an output image on the sheet in double-sided printing. It is determined whether or not to rotate an image based on whether the image is printed in a single-sided printing mode or a double-sided printing mode. In the double-sided printing mode, a reverse-side image is printed on a first surface of the sheet, the sheet is conveyed into the printing section through a double-sided conveying path, a front-side image is printed on a second surface of the sheet, and the sheet is discharged. In the single-sided printing mode, an image for single-sided printing is printed on a first surface of the sheet, and the sheet is discharged.
Abstract: A restriction member is disposed above a central axis of a developing roller. An upstream restriction portion is disposed on an upstream side of the restriction member in a conveyance direction of a developer and configured to restrict an amount of the developer that is to be supplied to the restriction member. The central axis of the developing roller and a rotation axis of a feed screw extend in parallel with each other. In a view of a developing device seen in a direction in which the central axis and the rotation axis extend, the restriction member and the upstream restriction portion are disposed within a range of 90°, to the upstream side in the conveyance direction, from an intersection point at which a straight line connecting the central axis and the rotation axis intersects with an outer circumferential surface of the developing roller.