Abstract: An image forming system includes: a first image forming apparatus including a first fixer that fixes an image formed on a recording medium to the recording medium; a second image forming apparatus including a second fixer that fixes an image formed on the recording medium to the recording medium, the second image forming apparatus being connected to a downstream side of the first image forming apparatus in a transport direction of the recording medium; and a hardware processor that determines first transport control content in which the recording medium is transported in the first image forming apparatus and the second image forming apparatus, and sets second transport control content so that the recording medium that has been processed by the first fixer is processed in a different position by the second fixer.

Abstract: An image forming system includes: a first image forming apparatus including a first fixer that fixes an image formed on a recording medium to the recording medium; a second image forming apparatus including a second fixer that fixes an image formed on the recording medium to the recording medium, the second image forming apparatus being connected to a downstream side of the first image forming apparatus in a transport direction of the recording medium; and a hardware processor that determines first transport control content in which the recording medium is transported in the first image forming apparatus and the second image forming apparatus, and sets second transport control content so that the recording medium that has been processed by the first fixer is processed in a different position by the second fixer.

Abstract: An image forming system includes a first device and a second device that are connected in series. The first device can continuously discharge a paper. The second device is blocked from information on a paper conveyance in the first device. The second device, based on printing setting information and a time at which the first paper passes the predetermined position, sets a printing cycle, and based on a time at which the second paper passes the predetermined position, calculates a delay time from a printing cycle of the second paper. The second device stops a conveyance of the second paper that is conveyed to the paper processor, and in accordance with the delay time, controls resuming of the stopped conveyance of the second paper.

Abstract: An image forming system includes a first device and a second device that are connected in series. The first device can continuously discharge a paper. The second device is blocked from information on a paper conveyance in the first device. The second device, based on printing setting information and a time at which the first paper passes the predetermined position, sets a printing cycle, and based on a time at which the second paper passes the predetermined position, calculates a delay time from a printing cycle of the second paper. The second device stops a conveyance of the second paper that is conveyed to the paper processor, and in accordance with the delay time, controls resuming of the stopped conveyance of the second paper.

Abstract: In an image forming apparatus of a tandem type including an intermediate conveying apparatus which conveys a sheet conveyed from a first image forming apparatus to a second image forming apparatus using a sheet conveying member, there are provided with a detecting portion configured to detect a state of the sheet conveying member, and an adjusting portion configured to adjust the state of the sheet conveying member so that the amount of heat radiation from the sheet in the sheet conveying member becomes constant, according to a detection result of the detecting portion.

Abstract: An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus. The image forming system includes a sheet conveyance path through which a sheet is conveyed from the first image forming apparatus to the second image forming apparatus through the intermediate apparatus. The sheet conveyance path is formed so that the rear end of a sheet having stopped on the sheet conveyance path is located on the sheet conveyance path within the intermediate apparatus.

Abstract: In an image forming apparatus of a tandem type including an intermediate conveying apparatus which conveys a sheet conveyed from a first image forming apparatus to a second image forming apparatus using a sheet conveying member, there are provided with a detecting portion configured to detect a state of the sheet conveying member, and an adjusting portion configured to adjust the state of the sheet conveying member so that the amount of heat radiation from the sheet in the sheet conveying member becomes constant, according to a detection result of the detecting portion.

Abstract: An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus and having a registration roller on the sheet conveyance path through which a sheet conveyed from the first image forming apparatus is conveyed to the second image forming apparatus. The intermediate apparatus has a path opening mechanism configured to release a pressure contact of the registration roller arranged on the sheet conveyance path.

Abstract: An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus and having a registration roller on the sheet conveyance path through which a sheet conveyed from the first image forming apparatus is conveyed to the second image forming apparatus. The intermediate apparatus has a path opening mechanism configured to release a pressure contact of the registration roller arranged on the sheet conveyance path.

Abstract: An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus. The image forming system includes a sheet conveyance path through which a sheet is conveyed from the first image forming apparatus to the second image forming apparatus through the intermediate apparatus. The sheet conveyance path is formed so that the rear end of a sheet having stopped on the sheet conveyance path is located on the sheet conveyance path within the intermediate apparatus.

Abstract: An image forming apparatus comprises a fixing part for fixing a toner image on a transfer material to the transfer material, a conveying part provided on the downstream side of the fixing part, a correcting member provided in a conveyance path leading from the fixing part to the conveying part, for correcting a curl of the transfer material, and a control part for controlling an upstream-side conveyance speed which is a conveyance speed at which the fixing part provided on the upstream side of the correcting member conveys the transfer material and a downstream-side conveyance speed which is a conveyance speed at which the conveying part provided on the downstream side of the correcting member conveys the transfer material. In printing of a first surface in a double-sided printing mode, the control part sets the downstream-side conveyance speed to be larger than the upstream-side conveyance speed.

Abstract: An image forming apparatus comprises a fixing part for fixing a toner image on a transfer material to the transfer material, a conveying part provided on the downstream side of the fixing part, a correcting member provided in a conveyance path leading from the fixing part to the conveying part, for correcting a curl of the transfer material, and a control part for controlling an upstream-side conveyance speed which is a conveyance speed at which the fixing part provided on the upstream side of the correcting member conveys the transfer material and a downstream-side conveyance speed which is a conveyance speed at which the conveying part provided on the downstream side of the correcting member conveys the transfer material. In printing of a first surface in a double-sided printing mode, the control part sets the downstream-side conveyance speed to be larger than the upstream-side conveyance speed.

Abstract: There is described a paper sheet conveyance apparatus and an image forming apparatus, which makes it possible not only to achieve the minimization and the cost reduction of the apparatus; but also to achieve the high-speed conveyance operation of the paper sheet without generating any step out of the stepping motor. The paper sheet conveyance apparatus, includes: a pair of conveyance rollers to convey a paper sheet; and a stepping motor to drive one of the pair of conveyance rollers. At least one of the conveyance rollers is a roller made of aluminum alloy metal. Further, the roller made of the aluminum alloy metal is shaped in a hallow cylinder. Still further, a surface hardening treatment is applied to a circumferential surface of the roller made of the aluminum alloy metal.

Abstract: An image forming apparatus provided with a bent sheet feeding guide member in the transportation path for transporting the recording material with the inclination along the width direction of the guide surface configured by the bent sheet feeding guide member being variable, or provided with a pair of transporting rollers that transports a recording material in the transportation path for transporting a recording material with the inclination of the pair of transporting rollers along the axial direction being variable with respect to the transportation surface.

Abstract: Disclosed is a sheet transport device having: a registration roller to transport a sheet after correcting a skew of the sheet; a drive source to drive the registration roller; a frame body; and a rotation resisting body which is connected to the registration roller on one side and is connected to the frame body on the other side, to create a resisting force against a rotation of the registration roller in a sheet transport direction.

Abstract: There is described a paper sheet conveyance apparatus and an image forming apparatus, which makes it possible not only to achieve the minimization and the cost reduction of the apparatus; but also to achieve the high-speed conveyance operation of the paper sheet without generating any step out of the stepping motor. The paper sheet conveyance apparatus, includes: a pair of conveyance rollers to convey a paper sheet; and a stepping motor to drive one of the pair of conveyance rollers. At least one of the conveyance rollers is a roller made of aluminum alloy metal. Further, the roller made of the aluminum alloy metal is shaped in a hallow cylinder. Still further, a surface hardening treatment is applied to a circumferential surface of the roller made of the aluminum alloy metal.

Abstract: The present invention provides an image printing apparatus which comprises registration roller unit which convey an image recording sheet toward an image transfer position at which the toner image is transferred onto the image recording sheet, a sensor which is provided between the registration roller unit and the image transfer position to detect the image recording sheet, and a control unit which controls driving of the registration roller unit.

Abstract: An image forming apparatus provided with a bent sheet feeding guide member in the transportation path for transporting the recording material with the inclination along the width direction of the guide surface configured by the bent sheet feeding guide member being variable, or provided with a pair of transporting rollers that transports a recording material in the transportation path for transporting a recording material with the inclination of the pair of transporting rollers along the axial direction being variable with respect to the transportation surface.

Abstract: A sheet convayance apparatus includes a switchback path in which a sheet is conveyed, paired sheet edge stop rollers arranged along the switchback path, capable of being rotated forwardly or reversely, and a controller for controlling a drive of the paired sheet edge stop rollers so that a collision of and edge of the sheet with the paired sheet edge stop rollers and a switching of a conveyance direction of the sheet are performed by a single stop operation of the sheet.

Abstract: An image forming apparatus includes: a fixing device that fixes the toner image onto the recording medium by applying heat and pressure; ejection rollers provided away from the fixing device for ejecting the recording medium; a guide provided on at least one part of a recording medium ejection path between the ejection rollers and the fixing device for guiding a conveyance of the recording medium; at least one spur provided on the guide, having a plurality of teeth on a circumference thereof; and a slit formed on the guide so that the plurality of teeth of the spur are protruded on a side of the recording medium ejection path through the slit, wherein the recording medium is conveyed from the fixing device by bringing the plurality of teeth of the spur into contact with a surface of the recording medium.