摘要:
A detecting apparatus includes a target section in which target elements to be detected are arranged in the direction of the motion of a moving body; a detecting section that detects the target elements with the motion of the moving body and outputs a waveform signal having an output level corresponding to its detection sensitivity; a first-digital-signal output section that binarizes the waveform signal with reference to a first threshold to output a first digital signal; a second-digital-signal output section that binarizes the waveform signal with reference to a second threshold which is higher in absolute value than the first threshold to output a second digital signal; and a determining section that determines whether the second digital signal has changed in status.
摘要:
A detecting apparatus includes a target section in which target elements to be detected are arranged in the direction of the motion of a moving body; a detecting section that detects the target elements with the motion of the moving body and outputs a waveform signal having an output level corresponding to its detection sensitivity; a first-digital-signal output section that binarizes the waveform signal with reference to a first threshold to output a first digital signal; a second-digital-signal output section that binarizes the waveform signal with reference to a second threshold which is higher in absolute value than the first threshold to output a second digital signal; and a determining section that determines whether the second digital signal has changed in status.
摘要:
An ink jet printer including fixed heads HD1 to HD5 which are arranged opposed to a recording surface PP of a recording medium P placed on a transporting belt V and transported. The ink jet printer has a recording area formed by arranging plural nozzles for ejecting ink droplets in a direction intersecting the transporting direction of the recording medium, wherein the transporting belt V has clogging preventing ejection openings WD1 to WD5 which are opposed to the fixed heads HD1 to HD5 at a predetermined time while the transporting belt V goes around, and the recording medium P is placed on the transporting belt V so as not to be laid on the clogging preventing ejection openings WD1 to WD5.
摘要:
In a color image forming apparatus, a looped belt member is stretched and circulated by at least a drive roller and a driven roller so as to have a tensed side and a slack side. Each of plural image supporting members supports a single color toner image thereon, and abuts onto the slack side of the belt member to define a transferring position at which the toner image is transferred onto either the belt member or a recording medium held by the belt member, while being rotated. A circumferential velocity of each image supporting member is determined so as to be higher than a circulation velocity of the belt member.
摘要:
The object of the invention is to provide an image carrier which is capable of securely preventing the leakage of charge in lateral direction so as to stably conduct the application or removal of charge and which can be easily manufactured. An image carrier comprises a dielectric layer, wherein charge is transferred between the dielectric layer and a charge-transfer controlling means so as to apply charge to or remove charge from the dielectric layer, wherein the dielectric layer is formed in such a structure that a large number of conductive portions are formed to be separately dispersed in its outer surface. Charge is transferred between the conductive portions and the charge-transfer controlling means so as to apply charge to or remove charge from the conductive portions.
摘要:
A fixing device includes a pressure application roller 120 pressed against a fixing belt 110 (or fixing roller) to be heated. One of the them is driven while the other follows the one in rotation. A recording medium S having a toner image thereon is moved to pass through a central part N1 of a press contact portion N, whereby the toner image is fused and fixed on the recording medium. High grip portions G are provided on both side ends of the fixing belt or the pressure application roller.
摘要:
An image forming apparatus which is able to form either single or double sided copies on a recording medium while achieving an excellent image quality in either a matted or glossy finish. The image forming apparatus includes a fixing portion in which a first roller includes a first temperature and hardness for forming a matted image, whereas a second roller includes a higher temperature and hardness for forming a glossy image. Alternatively, or in addition, to different hardness and temperatures, the recording medium can be conveyed at a first speed to form a matted image, and a slower speed to form a glossy image. The image forming apparatus further includes an inverse and re-fixing sub-mode, which utilizes an inverting and returning passage, for reducing the curl in a recording medium, and thus also reducing the instances in which clogging takes place. The inverting and returning passage has a length sufficient to accommodate a plurality of recording mediums. Moreover, the image forming apparatus is provided with first and second discharge passages so that if one passage is clogged, the other can be used to discharge recording mediums. A switching means selects, based on detection sensors, through which discharge passage a recording medium is fed. The operations of the image forming apparatus are coordinated by a control unit.
摘要:
A disk drive includes media for recording data, disk heads for recording data and reproducing data on the disks. The heads are supported on arms. A head actuator drives the arms moving the head to a predetermined data recording track on the disk. A spindle motor rotates the disk at a predetermined rotating speed. The spindle motor includes a rotor magnet disposed within a stator coil. The disk head and actuator motor are mounted on a pivot on opposed sides of each other. To control head positioning, first positioning data for positioning the disk heads and second positioning data are provided on each data surface. This data is detected by a data head. Second positioning data may be positioned on tracks not used for containing data. The head position is compensated by the stored second positioning information superimposed on the first positioning data.
摘要:
The invention prevents and suppresses wasteful expenditure of ink which occurs when recovering nozzles. In greater detail, a plurality of head units arranged in a direction which intersects a transportation direction of a printing medium is provided, a plurality of cleaning units is disposed to face the plurality of head units, and at least one of the plurality of cleaning units is selected and moved so as to be in close contact with the corresponding cleaning unit. By such a method, only the cleaning head unit which faces the head unit of which nozzles need to be recovered is selected and is brought into contact with the head unit, and liquid is sucked in from the nozzles of the head unit.
摘要:
A sheet adsorption device includes a sheet adsorbing surface, a suction hole disposed on the sheet adsorbing surface, and a flow path shifting unit that shifts between a first state and a second state of a communication flow path that is communicated with the suction hole in accordance with existence of a sheet that covers the suction hole. The cross-section area of a flow path in the second state is smaller than that in the first state and the communication flow path is not closed in the second state.