Abstract: An image forming apparatus includes a carriage mounted with a recording head of an ink-jet system, a carriage driving mechanism, and a sheet conveying mechanism that conveys a sheet in a predetermined direction. The carriage is moved in a direction orthogonal to the conveying direction of the sheet by the carriage driving mechanism. A sheet guide member is arranged in a position below the recording head and opposed to the recording head. A sheet passes over a guide section of this sheet guide member. A heater is provided in the sheet guide member. This heater heats the guide section.

Abstract: An image forming apparatus includes an apparatus main body, a transport mechanism that is provided in the apparatus main body and transports a sheet, a recording head to record an image by discharging ink to the sheet transported by the transport mechanism, a sheet guide that is provided to be opposite to the recording head and guides the sheet, a transport roller provided at an upstream side of the sheet guide in a sheet transport direction, an ejection roller provided at a downstream side thereof, and a transport unit that integrates the medium guide, the transport roller and the ejection roller and is provided to freely come in and out of the apparatus main body.

Abstract: A transfer belt unit which is mounted in an image forming device. The transfer belt unit contains a positioning member; a handle, and a guiding member. The positioning member positions the transfer belt unit with respect to the image forming device in a state where the transfer belt unit is inserted into a guide unit. The handle is placed on the rear side of the positioning member in a direction of inserting the transfer belt unit into the guide unit. The guiding member holds the transfer belt unit when the transfer belt unit is inserted into the guide unit by abutting on a guide surface of the guide unit together with the positioning member before the handle is inserted into the guide unit.

Abstract: A toner cartridge includes a toner container which contains toner, the toner container having at one end portion thereof a discharge port which discharges the toner, and a member which is attached to an outer peripheral surface of the one end portion. The member has a first part which is engaged with the one end portion, and a second part which has, at a position corresponding to the discharge port, a passage hole through which the toner discharged from the discharge port passes.

Abstract: There is provided a transfer belt unit mounting/dismounting device constituted by a decreased number of component parts capable of using the guide rails not only to guide the insertion of the transfer belt unit, but also to set the transfer belt unit to a transfer position and to return it to a non-transfer section.

Abstract: An image forming apparatus has: an intermediate transfer member to which a toner image developed on a photosensitive material is transferred while the intermediate transfer member rotates plural times; a transfer roller that is provided to be able to move into contact with and apart from the intermediate transfer member and transfers the toner image on the intermediate transfer member to a paper sheet while conveying the paper sheet pressed to the intermediate transfer member; a grooved cam having different grooves formed respectively in front and back surfaces of the grooved cam. A link mechanism for color image printing and a link mechanism for monochrome printing are reciprocated independently from each other, with ends of the link mechanism engaged respectively in the grooves of the grooved cam, thereby to control contact and separation of the transfer roller and the intermediate transfer member.

Abstract: An ink jet recording apparatus includes an ink jet head on which a plurality of nozzles are arranged, a sub-scan driving unit which carries a recording medium on which an image is formed, a first carrying unit which is disposed on a downstream side of a carrying direction of the recording medium by the sub-scan driving unit and carries the recording medium on which an image is formed by the ink jet head, a second carrying unit which is disposed on a downstream side of the first carrying unit along a carrying direction of the recording medium, and a heating unit which is disposed between the first carrying unit and the second carrying unit.

Abstract: An ink jet recording apparatus includes an ink jet head in which nozzles ejecting aqueous pigment ink in accordance with gradation are arrayed, a sub scanning driving unit which carries a recording medium having an image formed thereon with the ink, a heating unit which selectively heats an area divided into an integral multiple of a minimum recording pixel in the recording medium, and a heating control unit which determines presence and absence of an image based on image information recorded to the recording medium, and controls the heating unit.

Abstract: An ink jet recording apparatus includes an ink jet head in which a plurality of nozzles are arranged, a sub-scan driving unit which carries a recording medium to be formed with an image, a first carrying unit which is disposed on a downstream side of a carrying direction of the recording medium by the sub-scan driving unit and carries the recording medium on which an image is formed by the ink jet head, and a second carrying unit which is disposed so as to face the first carrying unit and heats the recording medium interposed between the first carrying unit and the second carrying unit.

Abstract: An ink jet recording apparatus including an ink jet head in which a plurality of nozzles are arranged, a sub-scan driving unit which carries a recording medium to be formed with an image, a suction unit which sucks the recording medium on the sub-scan driving unit, and a heating unit which is disposed with respect to at least one place of the sub-scan driving unit in a direction perpendicular to a carrying direction of the recording medium with a gap therebetween.

Abstract: A transfer roller drive unit sets an all-separate mode after setting a full-color mode, sets a monochrome mode after setting the all-separate mode, and sets a full-color mode after setting the monochrome mode. Namely, a transfer belt 25 comes into contact with the photosensitive drum 24 first, and then the photosensitive drums 21, 22 and 23. This pattern is repeated. The transfer belt 25 does not come into contact with the photosensitive drums 21, 22, 23 and 24 at a time.

Abstract: The image forming apparatus according to the present invention has: a transfer unit including an intermediate transfer medium that circularly moves; plural image forming sections provided in parallel with each other from an upstream side to a downstream side along a circulation direction of the intermediate transfer medium, the plural image forming sections each having a photosensitive drum; plural transfer rollers provided in the transfer unit so as to face the photosensitive drums of the plural image forming sections, respectively; and a charge removal means including plural charge removal members respectively provided adjacent to the transfer rollers, to remove electric charges charged on the intermediate transfer medium, with a clearance maintained between the intermediate transfermediumandthe plural charge removal members, the clearance being narrowed gradually from the upstream side toward the downstream side along the circulation direction.

Abstract: An image forming apparatus includes an apparatus body, a conveying mechanism that is provided in this apparatus body and conveys a sheet, a recording head that moves along a moving path orthogonal to a conveying direction of the sheet, ejects an ink to the sheet to print an image on the sheet, and, after the printing is finished, stands by in a first standby position on one end side of the moving path, and a CPU that moves the recording head that is on standby in the first standby position to an arbitrary position of the moving path.

Abstract: A toner cartridge includes a toner container which contains toner, the toner container having at one end portion thereof a discharge port which discharges the toner, and a member which is attached to an outer peripheral surface of the one end portion. The member has a first part which is disposed at the one end portion and has a shape corresponding to the toner cartridge, and a second part which has, at a position corresponding to the discharge port, a passage hole through which the toner discharged from the discharge port passes.

Abstract: The inkjet recording device has the feed mechanism for feeding the paper sheet in the feed direction, the inkjet head for ejecting the droplets towards the paper sheet conveyed by the feed mechanism, the dry section for drying the droplets attached on the paper sheet by landing, and the control mechanism for predicting the amount of heat necessary for drying the droplets based on either one of the paper sheet information of the paper sheet and the recording information to be recorded on the paper sheet to control the temperature of the dry section.

Abstract: An inkjet recording device has a conveying path, a feed mechanism configured to feed the paper sheet on the conveying path in the feed direction, an inkjet head configured to make droplets land on the paper sheet, a suction mechanism configured to suction the paper sheet towards the conveying path, and the control mechanism configured to predict the extent of the cockling caused in the paper sheet on which the droplets land based on either one of paper sheet information of the paper sheet and information of the image to be formed on the paper sheet to control suction force of the suction mechanism in accordance with the degree of the cockling.

Abstract: An image forming apparatus includes a conveying path that continues to a paper feeding unit and a paper discharge unit, a conveying mechanism that conveys a sheet along the conveying path, plural liquid ejecting heads that eject liquid onto the sheet conveyed on the conveying path, a sensor that is provided in a position between the plural liquid ejecting heads and the paper discharge unit and measures the glossiness of the sheet on which the liquid is ejected, and a control mechanism that compares the glossiness of the sheet immediately after the liquid is ejected and the glossiness measured by the sensor to calculate drying time of the liquid and controls conveying speed of the conveying mechanism to equalize conveying time for the sheet from the plural liquid ejecting heads to the paper discharge unit with the drying time.

Abstract: An image forming apparatus of the present invention includes an apparatus body having a document table portion on which a document is placed, a scanning unit provided inside the apparatus body to optically scan an image of the document placed on the document table portion, an image forming unit for forming a developer image on a photosensitive drum in accordance with the image information scanned by the scanning unit, a transfer charger for transferring the developer image formed by the image forming unit on a sheet, a fixing unit for fixing the developer image transferred by the transfer charger on the sheet, an ejecting roller for ejecting the sheet on which the developer image is fixed by the fixing unit to the outside, a sheet receiving unit provided below the scanning unit inside the apparatus body to receive the sheet ejected from the ejecting roller, and a blowing unit for blowing cool air to the sheet receiving unit along a lower surface part of the scanning unit.

Abstract: The image forming apparatus according to the present invention has: a transfer unit including an intermediate transfer medium that circularly moves; plural image forming sections provided in parallel with each other from an upstream side to a downstream side along a circulation direction of the intermediate transfer medium, the plural image forming sections each having a photosensitive drum; plural transfer rollers provided in the transfer unit so as to face the photosensitive drums of the plural image forming sections, respectively; and a charge removal means including plural charge removal members respectively provided adjacent to the transfer rollers, to remove electric charges charged on the intermediate transfer medium, with a clearance maintained between the intermediate transfer medium and the plural charge removal members, the clearance being narrowed gradually from the upstream side toward the downstream side along the circulation direction.

Abstract: An image forming apparatus includes an inkjet head, a first tank and a second tank, a first flow path, a second flow path, a third flow path, and a negative pressure control mechanism that controls negative pressure in the first tank and the second tank. The negative pressure control mechanism alternately switches a first phase in which the ink is delivered from the first tank to the second tank, and a second phase in which the ink is delivered from the second tank to the first tank. The inkjet head ejects the ink both in the first phase and in the second phase.