摘要:
An image heating apparatus includes a heater which heats an image on a recording material, which extends in a direction perpendicular to a moving direction of the recording material; a first temperature detecting member for detecting the temperature of the heater; power controlling device for controlling the power supplied to the heater, so that the temperature detected by the temperature detecting member remains constant; a second temperature detecting member which is positioned at a location apart, in the longitudinal direction of the heater, from where the first temperature detecting member is positioned; and an interrupting device for interrupting the imaging heating process in accordance with the temperature detected by the second temperature detecting member.
摘要:
A heating apparatus includes a heater, the heater including a main resistance layer and a subordinate resistance layer branched from said main resistance layer, which extend in a direction crossing with a movement direction of a recording material and which are supplied with electric power; a selector for selecting a resistance layer for supplying electric power; and a controller for controlling an effective voltage applied to said heater in accordance with selected resistance layer.
摘要:
An image fixing apparatus includes a heater; a film movable in contact with the heater at one side thereof and in contact with a recording material at the other side thereof, wherein a visualized image on the recording material is heated and fixed by heat from the heater through the film; the heater including a heat generating layer extending in a direction crossing a movement direction of the film, for producing the heat by the application of a voltage between its longitudinal opposite ends; an electric path branched out of an image fixing part of the heat generating layer; and a selector for selecting the electric path in accordance with a size of the recording material.
摘要:
Imaging forming apparatus includes an image bearing member, an image formation unit for forming an image on the image bearing member, and a detection unit for detecting a voltage-current characteristic between the image bearing member and the charging member. The image formation unit has a charging member contactable to the image bearing member to charge the image bearing member. An image formation condition for the image bearing member is determined on the basis of a plurality of detection operations of the detection unit.
摘要:
An image forming apparatus includes an image forming device for forming an unfixed image on a recording material; a heater; and a film movable with the recording material carrying the unfixed image, the heater heats the unfixed image through the film and a control unit controls the fixing conditions in accordance with the thermal property of the film.
摘要:
An image heating apparatus has a heater, a film for transferring heat from the heater to an image on a recording material, a rotary backup member for forming a nip with the film and a cleaning member for cleaning a peripheral surface of the rotary backup member. A device for moving the cleaning member is provided so that the cleaning member comes in contact with, or moves away from, the surface of the rotary backup member such that the moving device places the cleaning member in contact with the surface of the rotary backup member after the temperature of the rotary backup member increases.
摘要:
An image forming apparatus includes a charging device configured to uniformly charge a surface of a photoconductive element; an image writing device configured to write an image in the charged photoconductive element by light to form an electrostatic latent image; a developing device configured to visualize the formed electrostatic latent image as a toner image; a transfer device configured to transfer the toner image to a sheet recording medium; a fixing device configured to fix the transferred toner image onto the medium; and a surface information detecting device configured to detect surface information of a fixing member of the fixing device. The surface information detecting device radiates optical spots on a surface of the fixing member in a direction crossing a conveying direction, receives reflected light of each optical spot, and detects the surface information of the fixing device based on the detection results of the reflective lights.
摘要:
A reflective optical sensor for detecting surface information on a moving element moving in a certain direction includes at least one light emitter, a light emitting lens provided between the light emitter and a surface of the moving element and formed to become conjugated with the light emitter in the moving direction of the moving element in a longer distance from the light emitter than in a vertical direction relative to the moving direction, at least one light receiver, and a light receiving lens provided between the light receiver and the surface of the moving element.
摘要:
A reflection type optical sensor that detect a surface condition of a moving body and that is used for an image generation apparatus which forms images on a recording media includes a light-emitting device which has a plurality of light emitter systems including at least two light-emitting members and a light-emitting optical system having a plurality of light-emitting lenses corresponding to a plurality of the light emitter systems and guiding light emitted from the light emitter systems to the moving body and a light-receiving device which has a light receiver system including at least two light-receiving members and a light-receiving optical system having light-receiving lenses corresponding to the at least two light-receiving members and guiding light reflected by the moving body to the light receiver system. The image generation apparatus has further a surface condition judging device in addition to the reflection type optical sensor.
摘要:
An image forming apparatus includes a charging device configured to uniformly charge a surface of a photoconductive element; an image writing device configured to write an image in the charged photoconductive element by light to form an electrostatic latent image; a developing device configured to visualize the formed electrostatic latent image as a toner image; a transfer device configured to transfer the toner image to a sheet recording medium; a fixing device configured to fix the transferred toner image onto the medium; and a surface information detecting device configured to detect surface information of a fixing member of the fixing device. The surface information detecting device radiates optical spots on a surface of the fixing member in a direction crossing a conveying direction, receives reflected light of each optical spot, and detects the surface information of the fixing device based on the detection results of the reflective lights.