Abstract: A position of a user is recognized. A display unit (102) displays a content-display-frame (112). A determination unit (103) determines whether the position of the user is within a predetermined range from a wall surface (12) or not. The display control unit (104) configured to display a content-display-frame on a floor surface (11) when the position of the user is farther than the predetermined range from the wall surface, and configured to display an operation input area (113) that receives an operation input from the user on the wall surface while displaying a content-display-frame to span from the floor surface to the wall surface when the position of the user is within the predetermined range from the wall surface.

Abstract: A queue management device includes: a queue detection unit that, on the basis of a detection result of forming elements at a site subject to queue management, detects the state of the queue; a guidance position determination unit that, on the basis of the state of the queue detected by the queue detection unit, determines a guidance position where a guidance should be displayed; and a guidance display control unit that controls a display device such that the guidance is displayed at the guidance position determined by the guidance position determination unit.

Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet conveyed from a sheet storing unit by a sheet conveying unit, and a registering unit that registers detected sheet thickness information and detected sheet surface characteristics information. Based on information, distinct front and back surfaces of a conveyed predetermined sheet and a type of the conveyed predetermined sheet is determined. If the predetermined sheet type matches a type of an upcoming sheet on which the image will be formed and the determined front and back surfaces matches front and back surfaces of the upcoming sheet, an image is formed on the predetermined sheet. If the predetermined sheet type matches the upcoming sheet type and the determined front and back surfaces do not match the upcoming sheet front and back surfaces, information is displayed conveying that the predetermined sheet front and back surfaces are inverted.

Abstract: A heater unit is detachably attachable to an image forming apparatus, the image forming apparatus including an intake port configured to be provided in an exterior of a body of the image forming apparatus, and the heater unit includes: a power plug configured to receive power from a commercial power supply; a heater configured to generate heat by the power received from the power plug; a fan configured to rotate by the power received from the power plug and blow air warmed by the heater; and a screw hole configured to fix the heater unit to the image forming apparatus by a screw, wherein the heater unit is configured to be mounted on the intake port so that an air flow generated by the fan of the heater unit flows into the intake port.

Abstract: A toner image for measurement of an area coverage modulation of 90% or more is formed on a photosensitive drum in a non-image formation, and a setting condition for defining a developability of a toner image in an image formation is set so that a detection result of an optical sensor detecting the toner image for measurement becomes a preset target value. The target value is set to be lower as a value of the setting condition increases from a lower side to a higher side of the developability. The target value is set so that a color difference ?E of an image having half the maximum image density obtained after the setting condition is set with respect to an image having half the maximum image density obtained after the setting condition is set in a setting mode with use of unused developer is 6.5 or less.

Abstract: A toner image for measurement of an area coverage modulation of 90% or more is formed on a photosensitive drum in a non-image formation, and a setting condition for defining a developability of a toner image in an image formation is set so that a detection result of an optical sensor detecting the toner image for measurement becomes a preset target value. The target value is set to be lower as a value of the setting condition increases from a lower side to a higher side of the developability. The target value is set so that a color difference ?E of an image having half the maximum image density obtained after the setting condition is set with respect to an image having half the maximum image density obtained after the setting condition is set in a setting mode with use of unused developer is 6.5 or less.

Abstract: A sheet transport apparatus which includes a sheet transport path for transporting a sheet, and a regulation member. The regulation member is provided in the sheet transport path, and is brought into contact with a swelling portion occurring on a surface of an envelope in the event that the envelope is transported as the sheet, such that the swelling portion can be pressed.

Abstract: A sheet transport apparatus which includes a sheet transport path for transporting a sheet, and a regulation member. The regulation member is provided in the sheet transport path, and is brought into contact with a swelling portion occurring on a surface of an envelope in the event that the envelope is transported as the sheet, such that the swelling portion can be pressed.

Abstract: The image heating apparatus for heating an image formed on a recording material, comprising a sliding member and a supporting member for holding the sliding member and a pressure member which forms a nip part, wherein a portion of said supporting member which forms the nip part projects from a surface of the sliding member on the nip part side. The image heating apparatus can suppress a decrease in durability of a flexible rotary body.

Abstract: The present invention provides an image heating apparatus comprising a heater, a film sliding, and a back-up member. The heater includes a first heat-generating member for generating heat by electric power supply thereto, and a second heat-generating member, provided at the downstream side of the first heat-generating member with respect to the moving direction of the recording material, for generating heat by electric power supply thereto, and the first and second heat-generating members are so controlled that the ratio of the amounts of heat generation thereof varies depending on the presence or absence of the recording material in the nip.

Abstract: The present invention provides an image heating apparatus comprising a heating member having a first heating resistor and a second heating resistor, a temperature detecting element for detecting a temperature of the heating member, and a power supply control means for controlling power supply to the first and second heating resistors so that detected temperature of the temperature detecting element is maintained a set temperature. The power supply control means sends the power supply to the first heating resistor in a first power supply pattern, and sends the power supply to the second heating resistor in a second power supply pattern different from the first power supply pattern.

Abstract: An image forming apparatus includes an image bearing member; an image forming device for forming an image on the image bearing member, the image forming device being provided with a charging member which is disposed in contact or proximity with the image bearing member to electrically charge the image bearing member; wherein the charging member is supplied with an oscillating voltage, and there is provided a voltage set period in which a peak-to-peak voltage of the oscillating voltage is higher in a period in which the image is not formed on the image bearing member than in a period in which the image is formed on the image bearing member.

Abstract: A charging apparatus includes a charging surface for charging a member to be charged, wherein a voltage is applied between the charging apparatus and the member to be charged; and projections for contacting the charging apparatus substantially at three positions to the member to be charged to closely face a charging surface to the member to be charged.

Abstract: A charging member has a charging surface having a concave surface that is positioned on the opposite side of a line H than a side at which an object to be charged is disposed, wherein H is a line that (i) is tangent to a surface of the object to be charged at a point at a downstream end of a contact section or a closest-proximity section between the charging surface and the object to be charged, and (ii) extends downstream from the point of tangency, where the downstream direction is determined with respect to a direction of movement of the object to be charged. By this arrangement, a charging region can be enlarged and periodic fluctuations in a surface potential of the object to be charged can be mitigated.

Abstract: A charging member includes an electrode to be supplied with a voltage; a surface layer contactable to a member to be charged; and wherein a cavity is provided between the electrode and the surface layer. The cavity extends in a circumferential direction of the charging member and/or the cavity has a configuration to provide a substantially constant state of contact between the charging member and the member to be charged.

Abstract: A charging member contactable to a member to be charged to electrically charge it includes a charging portion contactable to the member to be charged; a supporting portion for supporting the charging portion, the supporting portion including an elastic layer and a supporting member for supporting the elastic layer; wherein the charging portion is movable toward and away from the supporting portion, and an inside diameter of the charging portion is larger than an outside diameter of the supporting portion.

Abstract: A developing apparatus includes a developer carrying member for carrying developer, an elastic blade press-contacted to the developer carrying member to regulate a layer of developer formed on the developer carrying member, where the elastic blade comprises an electrically conductive layer, and a high resistance layer located at the developer carrying member side of the conductive layer, and an electric field generating device for forming an oscillating electric field between the developer carrying member and the conductive layer, wherein a maximum intensity of the electric field is not less than 10.sup.6 V/m.

Abstract: A charging device, for use with an image forming apparatus with a detachable process cartridge, includes a movable member to be charged, and a charging member adjacent to the movable member. An oscillating voltage is applied to the charging member. The charging member includes a charging surface at the same side as the movable member. A tangent line extends from a point on the charging member, the point being the most downstream point in a moving direction of the movable member at a closest portion between the charging member and the image bearing member, toward the downstream side in the moving direction of the movable member. The charging device may include a first charging region and a second charging region provided at a downstream side from the first charging region, wherein a peak-to-peak voltage of unevenness in charging of a potential of the first charging region is greater than a peak-to-peak voltage of unevenness in charging of a potential of the second charging region.

Abstract: A developing apparatus including a developer carrying member for carrying a developer, a magnet disposed in the developer carrying member, and an elastic regulating member contacting the developer carrying member to regulate a thickness of a layer of the developer formed on the developer carrying member. The developer carrying member has a roughened surface over a width thereof larger than a width of the portion of the elastic regulating member contacting the developer carrying member while the magnet forms a magnetic field in a marginal region of the roughened surface of the developer carrying member not contacting the elastic regulating member to remove magnetic developer.

Abstract: A developing apparatus including a developing roller for carrying an one component developer to a developing zone for developing an electrostatic latent image. The developing roller is provided with a surface layer which contains long carbon fibers extending substantially parallel to the axis of the developing roller or extending in a direction inclined relative to the roller axis, and a binder for binding the carbon fibers.