Abstract:
An image forming apparatus includes a heater and a controller. The heater includes a plurality of heater elements arranged in a main scanning direction to fix an image on a sheet passing a nip. The controller is configured to determine image-forming regions and non-image-forming regions among sheet regions of the sheet divided in the main scanning direction and a sub-scanning direction based on image data of the image. The controller is further configured to determine, as heating regions, the image-forming regions and a first part of the non-image-forming regions satisfying a predetermined condition, and determine, as non-heating regions, a second part of the non-image-forming regions not satisfying the predetermined condition. The controller is configured to energize one or more of the heater elements corresponding to the heating regions, selectively at timing when the heating regions pass the nip.
Abstract:
A decoloring apparatus includes a sheet conveying unit, a scanner, a decoloring unit, and a controller. The decoloring unit decolors the image on the sheet conveyed through the sheet conveying unit. The decoloring unit is positioned downstream of the scanner in a sheet conveying direction. A distance along the sheet conveying direction between the scanner and the decoloring unit is shorter than a length of a first predetermined sheet size and longer than a length of a second predetermined sheet size. A controller determines whether the sheet conveyed by the sheet conveying unit is the first predetermined sheet size or the second predetermined sheet size. The controller performs a mode limiting process if the sheet size is determined to be the first predetermined sheet size.
Abstract:
An image forming apparatus includes: a first image forming unit which forms a first image on a first recording medium with a first material that is not thermally decolorizable; a second image forming unit which forms a second image on a second recording medium with a second material that is thermally decolorizable; a fixing device which is on a common carrying path shared by the first recording medium and the second recording medium and fixes the first image to the first recording medium; and a controller which controls the fixing device so that a temperature of the fixing device is lower than a decolorizing temperature of the second material when the second recording medium reaches the fixing device.
Abstract:
According to an embodiment, an image elimination apparatus eliminates an image formed on a sheet. A sheet supply unit supplies the sheet on which the image is formed. A first reader reads the sheet supplied by the sheet supply unit. An image eliminator eliminates the image formed on the supplied sheet. A second reader reads the sheet passing through the image eliminator. A discharge unit stacks the sheet to be discharged. A controller causes the first reader to read the sheet at a first speed in order to judge whether the sheet is reusable or not based on the reading result of the first reader. The controller also causes the second reader to read the sheet at a second speed faster than the first speed in order to judge whether the image formed on the sheet has been eliminated or not based on the reading result of the second reader.
Abstract:
When the presence or absence of a malfunction is respectively determined in a decoloring section or a separation device, and it is determined that either the decoloring section or the separation device is malfunctioning, only the other is executable.
Abstract:
A decoloring system has a scanner that reads an image on a paper sheet and generates image data; a first roller that applies heat on the paper sheet to decolor the image on the paper sheet; a heater that heats the roller; a first transporting mechanism that transports the paper sheet having the image to the scanner; a second transporting mechanism that transports the paper sheet via the first transporting mechanism to the heater; an operation panel that receives a read condition of the image as input by a user; and a controller that determines an operating condition of the heater, and a transporting speed of the paper sheet by the first transporting mechanism and the second transporting mechanism on the basis of the image read condition input by the user through the operation panel.
Abstract:
According to an embodiment, an image forming apparatus includes an image forming device, a scanning device, and a controller. The image forming device forms a first test image and forms a second test image. The scanning device scans the first test image with a first amount of emitted light corresponding to a first input value and scans the second test image with a second amount of emitted light corresponding to a second input value. The controller selectively executes any one of a first correction process, a second correction process, or a third correction process on the basis of an event change.
Abstract:
According to one embodiment, a sheet post-processing device includes a first tray to receive sheets from an image forming unit, a second tray to receive sheets from the first tray, and a third tray to receive sheets from the second tray. The third tray is movable relative to the second tray. A bundle claw is configured to move sheets in a first direction from the second tray to the third tray. A controller is configured to move the third tray relative to the second tray according to the sheets on the second tray. Depending on various characteristics of the sheets on the second tray or the presence of sheets already on the third tray, the position of the third tray may be changed to reduce possible misalignments of sheets in the transfer from the second to third tray.
Abstract:
An image erasing apparatus according to an embodiment includes a sheet supply portion that supplies a sheet and an ejector. A first conveying path conveys the sheet from the sheet supply portion toward the ejector. A reader arranged on the first conveying path reads an image on the sheet. A second conveying path branches from the first conveying path at a downstream of the reader on the first conveying path and merges with the first conveying path at an upstream of the reader on the first conveying path. An erasing unit is arranged on the second conveying path. A conveying path changing portion is arranged at a branching portion. An operating portion receives a setup of the processing to the sheet. A controller changes a conveying path of the sheet in accordance with the setup received by the operating portion before the sheet is supplied from the sheet supply portion.
Abstract:
An image forming apparatus includes a heat roller, a lamp, and a control unit. The heat roller fixes a toner image transferred onto a sheet. The lamp heats the heat roller. The control unit controls switching of the lamp on and off according to one of a first duty control and a second duty control that the control unit selects based on a mode of operation of the image forming apparatus.