摘要:
A discharge tray apparatus according to one embodiment of the present invention is a discharge tray apparatus wherein a plurality of sheets of recording paper that have been successively transported at a fixed speed and a fixed interval, discharged from a discharge opening, and have landed on a discharge tray, are received and placed onto the discharge tray, the discharge tray apparatus being provided with a discharge tray moving means that performs a tray shift operation that moves the discharge tray in a horizontal direction approximately perpendicular to the discharge direction, such that after a preceding paper successively transported earlier has been placed on the discharge tray, a succeeding paper succeedingly transported after the preceding paper is placed at a position different from the placement position of the preceding paper on the discharge tray. This discharge tray moving means performs the tray shift operation with a decelerating movement that reduces the movement speed of the discharge tray just before movement of the discharge tray stops.
摘要:
In one embodiment, a charge removal member 120, which removes static electricity built up on paper waste 130, is disposed in a collecting container 63 used for collecting the punch waste 130 generated by punching transported paper. The charge removal member 120 is disposed in an open top portion of the collecting container 63, in a location corresponding to a hole-punching punch 64 disposed in the punching unit 60, with a proximal end portion 121 of the charge removal member 120 supported by the collecting container 63 and the distal end portion of the charge removal member 120 forming charge removal comb-shaped needles 122 extending towards the central portion of the collecting container.
摘要:
A transport roller is provided in a transport path in order to transport paper, the transport roller transporting the paper downstream in the transport path by making contact with the paper, and At least one contact portion that makes contact with the paper is provided in the transport roller. The contact portion is deformable in a direction that releases pressing force received from the paper when transporting the paper.
摘要:
By application of a voltage from a power source, a transfer roller carries out both transfers of (A) a first transfer for transferring a toner image on a photoreceptor to an intermediate transfer medium and (B) a second transfer for transferring overlapped color toner image on the intermediate transfer medium at once onto a recording sheet. A transfer voltage in accordance with, for example, a sheet thickness, as detected by sheet type detection of a sheet type detecting section is applied to the transfer roller in each stage. When the sheet type detecting section detects that the recording sheet is longer than a periphery of a fixing belt, a heater lamp is turned on in advance at any instant between a time when the recording sheet is brought into contact with the fixing roller and a time when the fixing roller completes one rotation, taking into consideration a time required for conduction of heat from the heater lamp to the fixing belt. As a result, it is possible to reduce ozone generated and make the device compact, and desirable transfer characteristics in accordance with a sheet type are obtained, thus realizing uniform fixing of an unfixed toner image onto the recording sheet, from the front end to the rear end.
摘要:
An image forming apparatus which applies a voltage from a power source, to a transfer roller for performing a first transfer for transferring a toner image on a photoreceptor to an intermediate transfer medium, and a second transfer for transferring overlapped color toner image on the intermediate transfer medium to a recording sheet. A transfer voltage based on sheet thickness is detected by a sheet type detecting section and applied to the transfer roller in each transfer stage. When the sheet type detecting section detects that the recording sheet is longer than a periphery of a fixing belt, a heater lamp is turned on between a time when the recording sheet is brought into contact with the fixing roller, and a time when the fixing roller completes one rotation. As a result, it is possible to reduce ozone generated in the image forming apparatus and to make the apparatus compact. Further, with the image forming apparatus, desirable transfer characteristics in accordance with a sheet type are obtained, thus realizing uniform fixing of an unfixed toner image onto the recording sheet.
摘要:
An elastically-deformable heat-resistant belt is made in the form of a cylinder made of nickel, which accommodates therein a heater lamp and a reflecting plate for concentrically directing radiant heat from the heater lamp to the vicinity of an area wherein the cylinder-like belt comes into contact with a recording paper sheet carrying a toner image. When the recording paper is transferred along a guide plate, the driving roller rotates the heat-resistant belt in contact with the recording paper. At this time, the rotating belt and the guide plate are pressed against each other and, furthermore, the movable guide plate is further pushed toward the belt by rotation of an eccentric cam with an operating lever to vary the pressed condition of the belt to form a flat surface of a paper transferring portion with a variable nip width therebetween. The recording paper sheet is transported being pressed against a flat surface of the heat-resistant belt with a suitable nip width and, thereby, the toner image is fixed onto the recording paper by heat. The fixing condition of the device can be freely changed with a freely settable nip width. The device can effectively fix by heat a toner image developed on recording paper, preventing the latter from being curled.
摘要:
In a developing device for use in a picture forming apparatus such as a laser printer and the like and having a developing tank and a supply tank, a sealing member for closing a path in communication with the supply tank and a toner supply outlet is provided. The sealing member is automatically switched from closed state to opened state by frictional force of a supply roller when the supply roller is rotated.
摘要:
An image forming apparatus comprises a main body, a post-processing device, an objective working section, a light source and a shade member. The post-processing device is disposed freely displaceable between a retracted position at which it is received by an intra-body paper discharge section of the main body and a protruded position at which it is drawn to one side face side. The objective working section is disposed on an upstream side face of the post-processing device in the drawing direction of the post-processing device.The light source is disposed on the upstream side face of the post-processing device, and lights up the objective working section at the protruded position. The shade member is disposed on the upstream side face of the post-processing device and in the front face side from the light source, and blocks direct projection light of the light source to the front face side.
摘要:
A post-processing device includes an introductory feed path, a processing tray, a post-processing section, a catch tray, a sheet delivery section, and a control section. The post-processing section is configured to perform post-processing on the sheet placed on the processing tray. The catch tray is disposed below the processing tray. The sheet delivery section has an upper rotary member and a lower rotary member which are disposed at an end of the processing tray lying on a catch tray side so as to be movable toward and away from each other. The control section causes the upper rotary member and the lower rotary member to press against each other at latest by the time a leading edge of a first sheet of a group of sheets to be post-processed at a time is brought into contact with the catch tray.
摘要:
A paper discharge apparatus that sequentially discharges paper through a discharge outlet, stacks and stores the paper is provided, the apparatus includes: a discharge tray including a fixed tray that is fixedly disposed spaced apart from the discharge outlet, and a swing tray that is disposed between the fixed tray and the discharge outlet and that is axially supported so as to be capable of swinging at or near an end portion of the fixed tray; and a drive control unit that controls an angle of inclination of a surface of the swing tray with respect to a surface of the fixed tray by swinging the swing tray. In this paper discharge apparatus, paper discharged from the discharge outlet is received on the fixed tray and the swing tray of the discharge tray.