Patent application number | Description | Published |
20090041486 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus comprises a first image forming unit that transfers a base toner image formed on a first image carrier to an intermediate transfer member and forms an image and second image forming units that are plurally disposed downstream of the first image forming unit in a moving direction of the intermediate transfer member, transfer different color toner images formed on second image carriers to the intermediate transfer member and form images. The base toner image is formed beforehand in a single color region transferred onto the intermediate transfer member from the second image carriers of the second image forming units. | 02-12-2009 |
20100080589 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes: a first transfer unit that transfers a developer image formed on an image carrier to an intermediate transfer member; a second transfer unit that transfers the developer image on the intermediate transfer member to a recording medium; and a control unit that controls at least one of a transfer pressure and a transfer electric field by the first transfer unit in accordance with a type of the recording medium to which the developer image is transferred. | 04-01-2010 |
20110158662 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image holder, a latent image forming unit, and a developing unit, the developing unit including a developer holder that is disposed to face the image holder and holds developer. Also included is a developer container, a replenishing unit that replenishes new developer to the developing unit, a discharge unit that discharges the developer, a calculation unit that calculates an image area coverage of a toner image formed on the image holder, an obtaining unit that obtains a potential difference between the developer holder and the image portion on the image holder, and a controller that increases a discharge amount of the developer, when the image area coverage calculated by the calculation unit is smaller than a predetermined reference image area coverage, and the potential difference obtained by the obtaining unit is larger than a predetermined reference potential difference. | 06-30-2011 |
20110194877 | IMAGE FORMING APPARATUS - An image forming apparatus includes toner image forming units that are arranged in a line at two end portions and at an intermediate portion of the line, each of the toner image forming units forming a toner image; an image transfer body to which the toner images formed by the toner image forming units are transferred; pressing members that are linearly arranged so that each of the pressing members faces a corresponding one of the toner image forming units with the image transfer body therebetween, each of the pressing members applying a pressing force to the image transfer body; and a fixing unit that fixes the toner images on a recording member. The pressing forces applied by the pressing members that are disposed at the two end portions are smaller than the pressing force applied by the pressing member that is disposed in the intermediate portion. | 08-11-2011 |
20120219309 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes a toner image forming device that forms a toner image by using at least one of a plurality of toners that include a color toner and a first transparent toner; an intermediate transfer body to which the toner image is transferred; a second transfer unit that transfers the toner image to a recording medium; and a controller that acquires characteristic information that represents a characteristic of in-plane resistance variation of a currently-used recording medium before the toner image forming device forms the toner image, and if the characteristic information indicates that the in-plane resistance variation of the currently-used recording medium is larger than a predetermined value, controls the toner image forming device so that the toner image forming device forms a transparent toner image in such a way that a color toner image is superimposed on the transparent toner image on the intermediate transfer body. | 08-30-2012 |
20130011151 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes a transfer device, a facing member, and a prepressing member. The transfer member transfers a toner image, which is carried on an intermediate transfer member, to a recording medium. The facing member is disposed so as to be in pressed contact with the transfer member with the intermediate transfer member therebetween. The prepressing member is disposed so as to be in pressed contact with the transfer member with the intermediate transfer member therebetween at a position that is upstream of a contact section in which the facing member is in pressed contact with the transfer member and that is immediately behind a position at which the toner image starts to come into contact with the recording medium. A pressure applied by the prepressing member is lower than a pressure with which the facing member is in pressed contact with the transfer member. | 01-10-2013 |
20140147145 | IMAGE FORMING APPARATUS - An image forming apparatus includes plural image carriers, an intermediate transfer body, plural first transfer devices, a second transfer device, and an adjustment device. Each image carrier carries a color component image formed thereon. The intermediate transfer body is rotated while facing the image carriers, is disposed so as to be in contact with at least one or more image carriers used for image formation, and temporarily carries one or more images formed on the one or more image carriers. Each first transfer device forms a transfer electric field in a first transfer region to transfer a color component image onto the intermediate transfer body. The second transfer device forms a transfer electric field in a second transfer region to transfer color component images onto a recording material. The adjustment device adjusts first transfer conditions for the plural first transfer devices. | 05-29-2014 |
20140153945 | IMAGE FORMING APPARATUS - An image forming apparatus includes plural image carriers, an intermediate transfer body, a contact and separation mechanism, a selection member, plural first transfer units, a second transfer unit, and an adjustment member. Each image carrier carries a toner image. The intermediate transfer body is disposed so as to be in contact with one or more image carriers. The contact and separation mechanism causes the intermediate transfer body to be in contact with or separated from the image carriers. The selection member selects a first contact state or a second contact state. Each first transfer unit forms a transfer electric field in a first transfer region to transfer a toner image onto the intermediate transfer body. The second transfer unit forms a transfer electric field in a second transfer region to transfer toner images onto a recording material. The adjustment member adjusts first transfer conditions. | 06-05-2014 |
20140170345 | BARRIER LAMINATE AND NOVEL POLYMER COMPOUND - The present invention provides a barrier laminate with enhanced heat resistance performance, comprising at least one organic layer and at least one inorganic barrier layer, the organic layer being formed by curing a polymerizable composition comprising a polymerizable compound having two or more polymerizable groups, and the total quantity of uncured component in the organic layer being 1.5 weight % or less of the total weight of the organic layer, and a novel polymerizable compound that can preferably used as the polymerizable compound, which is denoted by general formula (11): | 06-19-2014 |
20140294408 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier; an intermediate transfer body that temporarily carries a color component image formed by the image carrier; a first-transfer member; a second-transfer member; a surface-positioning member that is disposed upstream of the second-transfer member in a transport direction of the intermediate transfer body, that is in contact with a back surface of the intermediate transfer body, that is movable forward and backward in a direction that intersects an in-plane direction of the intermediate transfer body, and that forms a transport path surface of the intermediate transfer body extending to a second-transfer region; and a tension adjustment member that adjusts a tension of the intermediate transfer body. | 10-02-2014 |
20140294411 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier; an intermediate transfer body; a second-transfer member; a support mechanism that supports the second-transfer member in a second-transfer region; a surface-positioning member that is disposed upstream of the second-transfer member in a transport direction; a determination device that determines whether or not a recording medium is a thin medium; and a controller that, in a case where it is determined that the recording medium is a thin medium, controls the support mechanism so as to move the second-transfer member more upstream in the transport direction than in other cases and controls the position of the surface-positioning member so as to move the second-transfer member in a direction such that an angle between the intermediate transfer body and the second-transfer member on the upstream side becomes larger than in other cases. | 10-02-2014 |
20140341620 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes a transfer member provided so as to be able to revolve, and a voltage application unit. The transfer member has an upper layer and a lower layer arranged in a thickness direction, the upper layer has a larger volume resistivity than the lower layer. The transfer member receives a developer image transferred from an image bearing member to the upper layer at a first transfer portion and transfers the developer image to a recording medium at a second transfer portion. The voltage application unit applies an alternating-current voltage having a polarity that alternates in a moving direction of the transfer member to the transfer member, between the second transfer portion and the first transfer portion. | 11-20-2014 |
20140374733 | PHOTOELECTRIC CONVERSION ELEMENT, METHOD FOR USING THE SAME, IMAGING DEVICE, PHOTOSENSOR, AND COMPOUND - An object of the present invention is to provide a photoelectric conversion element having a photoelectric conversion film which exhibits heat resistance, a high photoelectric conversion efficiency, a low level of dark currents, rapid response, and sensitivity characteristics to red and can be produced by a vapor deposition processing that is continuously performed under a high-temperature condition. The photoelectric conversion element of the present invention is a photoelectric conversion element in which a conductive film, a photoelectric conversion film containing a photoelectric conversion material, and a transparent conductive film are laminated on one another in this order, wherein the photoelectric conversion material includes a compound represented by Formula (1). | 12-25-2014 |
20150016851 | TRANSFER DEVICE, IMAGE FORMING APPARATUS, AND TRANSFER METHOD - A transfer device includes a transfer portion that transfers a toner image formed with a toner containing flat pigment particles to a recording medium; a DC voltage applying portion that applies a DC voltage to the transfer portion; and an AC voltage applying portion that applies an AC voltage to the transfer portion. | 01-15-2015 |
20150030342 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes a first-transfer power supply that includes a direct-current power supply and an alternating-current power supply, and a first-transfer member that transfers a toner image formed on an outer peripheral surface of an image carrier to a receiving member from which the toner image is transferred to a medium. The first-transfer member transfers the toner image by receiving a voltage from the first-transfer power supply. | 01-29-2015 |