Patent application number | Description | Published |
20080199211 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit, an apparatus body, a door, a sheet conveyance unit, and a positioning device. The image forming unit forms an image on a sheet. The image forming unit is disposed in the apparatus body. The door is provided in the apparatus body so as to be openable and closable. The sheet conveyance unit conveys the sheet to the image forming unit. The sheet conveyance unit is provided in the door. The positioning device positions the door in relation to the apparatus body in the vertical direction and the horizontal direction. The positioning device performs positioning of the door in the vicinity of the image forming unit. | 08-21-2008 |
20090304428 | IMAGE FORMING SYSTEM - An image forming system including: an image reading portion, which reads an image on an original; an image forming portion, which forms an image on a sheet; and a storage device, which stores an original before the image reading portion reads an image thereon and a sheet before the image forming portion forms an image thereon, the storage device being detachably mounted to the image forming system. | 12-10-2009 |
20100178088 | IMAGE HEATING APPARATUS - An image heating apparatus for heating an image on a recording material, includes a rotatable heat generation member capable of induction heat generation by a magnetic flux; a coil, provided outside the heat generation member, for generating the magnetic flux for the induction heat generation; a movable magnetic core provided at a position opposed to the coil; a moving device for moving the magnetic core between a first position opposed to the coil and a second position which is more away from the coil than the first position; and an electroconductive member mounted at a position where a magnetic circuit is capable of being formed with the coil when the magnetic core is in the second position. | 07-15-2010 |
20100329729 | IMAGE FORMING APPARATUS - In an apparatus including a fixing device configured to be rotated by receiving a driving force from a main body of the apparatus and a drawer configured to draw out of the main body while holding the fixing device, a storage position of the drawer is adjusted to adjust an alignment between a transfer unit and a fixing nip. With the alignment so adjusted, meshing of gears that transmit force to rotate a fixing roller from a driving source of the main body of the apparatus may deteriorate, thus causing a rotational unevenness of the fixing roller. Therefore, an alignment unit configured to adjust an alignment is provided between a fixing support member configured to support a fixing unit and a fixing driving unit driving the fixing unit and a transfer support member configured to support a support member supporting the fixing support member. | 12-30-2010 |
20110076070 | IMAGE HEATING APPARATUS - An image heating apparatus includes an excitation coil; an image heating member for heating an image on a recording material by heat generated by a magnetic flux of the excitation coil; a core disposed opposed to the coil; a moving device for moving the core between a first position in which the core is opposed to the excitation coil and a second position in which the core is remoter from the excitation coil than the first position; and an air blower for blowing air into a space between the core and the excitation coil, the space being provided by moving the core to the second position. | 03-31-2011 |
20110097102 | IMAGE FORMING APPARATUS - An image forming apparatus has: a rotary member which conveys a sheet; a blowing device which blows a cooling air to cool the rotary member; and a blow-off member which blows the cooling air from the blowing device toward the rotary member. The cooling air is blown toward the portion of the rotary member serving as a downstream side of the rotary member and a blow-off direction of the cooling air is opposite to a rotating direction of the rotary member. | 04-28-2011 |
20110150546 | IMAGE HEATING APPARATUS - An image heating apparatus includes a belt unit including a belt; a coil unit, provided opposed to an outer surface of the belt, including a coil for generating a magnetic flux for heating the belt; a pressing member for forming a nip, in which a recording material is to be heated, between itself and the belt; a positioning portion, provided on the coil unit, for positioning the coil unit with respect to the belt unit; a portion to be positioned, provided on the belt unit, for being engaged with the positioning portion; and an elastic member for urging the coil unit toward the belt unit. | 06-23-2011 |
20120057887 | IMAGE FORMING APPARATUS - An image forming apparatus, including: a fixing device configured to fix a toner image onto a sheet by heating the sheet having the toner image formed thereon; a wire-shaped guide configured to guide the sheet having the toner image fixed thereto; and a holder, configured to hold the wire-shaped guide, to which the wire-shaped guide is fixed by using elasticity of the wire-shaped guide. | 03-08-2012 |
20120148318 | IMAGE HEATING APPARATUS - An image heating apparatus includes an excitation coil; an image heating member for generating heat using a magnetic flux from the excitation coil to heat an image on a recording material; a magnetic core; image heating member; a core supporting member; magnetic core; a back-up member; a pressing member forming a nip between the back-up member and itself with the image heating member therebetween; a stay member; an apparatus side plate; a first positioning portion for determining a position of the stay member relative to one of the apparatus side plates; a second positioning portion, provided at a central portion of the stay member, for determining a position of the core supporting member relative to the stay member. | 06-14-2012 |
20120155934 | IMAGE HEATING APPARATUS - An apparatus includes a coil generating magnetic flux, a rotatable heater generating heat by the flux generated from the coil, for heating an image on a recording material, magnetic cores provided outside the heater and arranged in a rotational axis direction of the heater, a first mover moving at least a part of the cores from a first position to a second position spaced form the coils, an adjuster, movable between the cores and the heater, for reducing the flux directed from the cores toward the heater, and a second mover moving, when a first core in a non sheet passing area of the recording material is moved to the second position by the first mover and a second core adjacent to the first core in the non sheet passing area is disposed at the first position to heat the image, the adjuster to a position corresponding to the second core. | 06-21-2012 |
20130045033 | IMAGE HEATING APPARATUS WITH ROTATABLE HEAT GENERATION MEMBER CAPABLE OF INDUCTION HEAT GENERATION BY A MAGNETIC FLUX - An image heating apparatus for heating an image on a recording material, includes a rotatable heat generation member capable of induction heat generation by a magnetic flux; a coil, provided outside the heat generation member, for generating the magnetic flux for the induction heat generation; a movable magnetic core provided at a position opposed to the coil; a moving device for moving the magnetic core between a first position opposed to the coil and a second position which is more away from the coil than the first position; and an electroconductive member mounted at a position where a magnetic circuit is capable of being formed with the coil when the magnetic core is in the second position. | 02-21-2013 |
20130328262 | IMAGE FORMING APPARATUS - An image forming apparatus includes a manual feed portion provided on a side surface of a housing that accommodates an image forming portion and having an abutting portion against which a downstream end in a sheet feeding direction of a sheet inserted into a gap between the manual feed portion and the side surface abuts. The manual feed portion also includes a holding portion configured to hold the sheet such that a sheet surface is held along the side surface of the housing in the condition in which the downstream end of the sheet abuts against the abutting portion. | 12-12-2013 |
20140093291 | IMAGE HEATING APPARATUS - An apparatus includes a coil generating magnetic flux, a rotatable heater generating heat by the flux generated from the coil, for heating an image on a recording material, magnetic cores provided outside the heater and arranged in a rotational axis direction of the heater, a first mover moving at least a part of the cores from a first position to a second position spaced form the coils, an adjuster, movable between the cores and the heater, for reducing the flux directed from the cores toward the heater, and a second mover moving, when a first core in a non-sheet-passing area of the recording material is moved to the second position by the first mover and a second core adjacent to the first core in the non-sheet-passing area is disposed at the first position to heat the image, the adjuster to a position corresponding to the second core. | 04-03-2014 |
20140093292 | IMAGE HEATING APPARATUS - An apparatus includes a coil generating magnetic flux, a rotatable heater generating heat by the flux generated from the coil, for heating an image on a recording material, magnetic cores provided outside the heater and arranged in a rotational axis direction of the heater, a first mover moving at least a part of the cores from a first position to a second position spaced form the coils, an adjuster, movable between the cores and the heater, for reducing the flux directed from the cores toward the heater, and a second mover moving, when a first core in a non-sheet-passing area of the recording material is moved to the second position by the first mover and a second core adjacent to the first core in the non-sheet-passing area is disposed at the first position to heat the image, the adjuster to a position corresponding to the second core. | 04-03-2014 |
20140147183 | IMAGE FORMING APPARATUS - A sheet conveyance apparatus includes an apparatus main body, an opening/closing door movably supported by the apparatus main body so as to be capable of opening a conveyance path through which a sheet is conveyed, a sensor lever configured to rotate when pushed by the sheet in the conveyance path, a holder rotatably holding the sensor lever and movably supported by the opening/closing door, a positioning portion provided in the apparatus main body and configured to perform positioning of the holder by coming into contact with the holder, and a sheet detection sensor provided in the apparatus main body and configured to generate a signal corresponding to the position of the sensor lever. | 05-29-2014 |
20140174888 | BELT UNIT, IMAGE FORMING APPARATUS AND BELT MEMBER EXCHANGING METHOD - A belt unit includes: a belt member; a belt supporting unit including a plurality of supporting rollers for supporting the belt member, and a pair of side units for supporting end portions of each of the plurality of supporting rollers; and a cleaning unit, including a cleaning blade for cleaning the belt member, detachably mountable to the belt supporting unit. The cleaning unit includes a connecting portion connectable to one of the side units so that the belt supporting unit from which the cleaning unit is demounted is placed in a standing state such that the one of the side units is directed downward and the other side unit is directed upward. | 06-26-2014 |
20140178099 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a main assembly; a belt unit, including a belt member and supporting rollers for supporting the belt member, detachably mountable to the main assembly with respect to a direction crossing a rotational axis direction of the supporting rollers; image forming portions, provided below the belt unit along the belt member, for forming toner images on the belt member; toner cartridges, provided above the belt unit, for supplying toners to the image forming portions, respectively; a side plate provided in the main assembly; and an integrated member provided on the side plate and including a guiding member having a guiding portion for guiding the belt unit and toner supply passages for permitting communication of the image forming portions with the toner cartridges, respectively. The guiding member and the toner supply passages are integrally constituted so that the toner supply passages penetrate the guiding member. | 06-26-2014 |