Abstract: A disclosed image forming apparatus has a recording head for ejecting droplets of recording liquid and forms an image on a recording medium. The image forming apparatus includes a decurling unit configured to perform decurling of the recording medium and adjusts the decurling of the recording medium based on a first information piece about the degree of curl of the recording medium and a second information piece about a subsequent recording medium on which an image is to be formed after the image is formed on the recording medium.

Abstract: A disclosed image forming apparatus comprises: a conveying belt conveying a record medium attracted to the conveying belt using electrostatic force; a recording head for ejecting droplets on the record medium and forming an image; and a voltage waveform applying unit applying voltage waveforms, in which the shape of a positive waveform and the shape of a negative waveform are different, to the conveying belt so as to apply positive and negative electric charge thereto and generate the electrostatic force.

Abstract: An inkjet recording device is disclosed that is capable of precisely defining the gap between a conveyance belt and a recording head and maintaining good flatness of the conveyance belt and a recording medium being conveyed. A guide unit is arranged to push a portion of the conveyance belt from the inner side to approach the recording unit. The guide unit has a number of projecting ribs formed on the surface of the guide unit in contact with the conveyance belt and arranged to be perpendicular to the rolling direction of the conveyance belt.

Abstract: An image forming apparatus that forms an image on a recording medium by conveying the recording medium in a direction orthogonal to a scanning direction of a carriage having a recording head includes a first detecting unit mounted on the carriage and configured to detect the recording medium; a second detecting unit placed upstream from the first detecting unit in the direction that the recording medium is conveyed and configured to detect the recording medium; and a control unit configured to control operations of the image forming apparatus based on a detection result from the first detecting unit or the second detecting unit.

Abstract: An image forming apparatus can form a high-quality image while acquiring a stable conveyance performance. A conveyance belt (21) conveys a recording medium (12) by attracting the recording medium (12) by an electrostatic force. A recording head (7) discharges liquid droplets toward the recording medium (12) being conveyed by the conveyance belt (21). Alternating positive and negative electric charges are applied onto the conveyance belt (21). A conveyance speed is controlled in accordance with a charge period length of the alternating positive and negative electric charges applied onto the conveyance belt (21).

Abstract: An image forming apparatus can form a high-quality image while acquiring a stable conveyance performance. A conveyance belt (21) conveys a recording medium (12) by attracting the recording medium (12) by an electrostatic force. A recording head (7) discharges liquid droplets toward the recording medium (12) being conveyed by the conveyance belt (21). Alternating positive and negative electric charges are applied onto the conveyance belt (21). A conveyance speed is controlled in accordance with a charge period length of the alternating positive and negative electric charges applied onto the conveyance belt (21).

Abstract: An image forming device, includes a recording head configured to jet a liquid drop of recording liquid to a recording medium so that an image is formed; and a conveyance belt adhering the recording medium by an electrostatic force. The recording medium adhered to the conveyance belt by the electrostatic force is not separated from the conveyance belt at an angle formed by a flat surface of the conveyance belt facing the recording head and a tilt surface of the conveyance belt tilting downward at a downstream side of the recording head.

Abstract: In an image forming apparatus, an AC bias is supplied to a conveyance belt, and the amount of charge on the printing side of a recording sheet is decreased. The charge of positive polarity and the charge of negative polarity which are different from each other are generated on the printing side of the sheet, so that both the charges are cancelled by each other and the charge on the printing side of the sheet is eliminated. Moreover, the charge eliminator eliminates the charge on the printing side of the sheet by the time the sheet is electrostatically attached to the conveyance belt and conveyed to a position where the sheet confronts the head.

Abstract: An image forming apparatus can improve an accuracy of conveyance of a recording medium with a simple structure and prevent a reverse flow of mist so as to stably form a high-quality image. A conveyance belt (21) conveys a recording medium (12) by attracting the recording medium by an electrostatic force generated by electric charges applied thereto. A recording head (7) discharges droplets of a recording liquid toward the recording medium (12). An amount of electric charges induced on a surface of the recording medium (12), which has been conveyed to a recording position where the droplets of the recording liquid are discharged from the recording head (7) toward the recording medium (12), is adjusted in accordance with a resistance value of the recording medium (12).

Abstract: An image reading device of the present invention includes a glass platen mounted on a support member. A rotary cam, a home position sensor and so forth allow the support member to move in reciprocation in a subscanning direction. When a document is conveyed along the glass platen, the glass platen is moved in the subscanning direction together with the support member. Consequently, a reading section and the reading position of the glass platen move relative to each other, obviating black stripes and other defects ascribable to contamination.

Abstract: An image forming apparatus can form a high-quality image while acquiring a stable conveyance performance. A conveyance belt (21) conveys a recording medium (12) by attracting the recording medium (12) by an electrostatic force. A recording head (7) discharges liquid droplets toward the recording medium (12) being conveyed by the conveyance belt (21). Alternating positive and negative electric charges are applied onto the conveyance belt (21). A conveyance speed is controlled in accordance with a charge period length of the alternating positive and negative electric charges applied onto the conveyance belt (21).

Abstract: An image-forming apparatus includes an endless conveyor belt, a counter roller, and a clutch part. The endless conveyor belt is rotatable to convey paper with a surface of the conveyor belt being charged. The counter roller holds the paper between the conveyor belt and the counter roller and conveys the paper. The clutch part is caused to slip by the difference in velocity between the conveyor belt and the counter roller. The counter roller is driven through the clutch part.

Abstract: An inkjet recording device is disclosed that is capable of precisely defining the gap between a conveyance belt and a recording head and maintaining good flatness of the conveyance belt and a recording medium being conveyed. A guide unit is arranged to push a portion of the conveyance belt from the inner side to approach the recording unit. The guide unit has a number of projecting ribs formed on the surface of the guide unit in contact with the conveyance belt and arranged to be perpendicular to the rolling direction of the conveyance belt.

Abstract: An automatic sheet feeding apparatus method and computer readable medium capable of performing an efficient reading operation includes a sheet table, a sheet transfer mechanism, and a controller. The sheet transfer mechanism performs first, second, and third transfer operations. In the first transfer operation, a sheet is separated from the sheet table and is transferred via a first connecting path to the reading position to receive a front-face sheet feeding operation. In the second transfer operation, the sheet is transferred via the first connecting path to the reading position to receive a rear-face sheet feeding operation. In the third transfer operation, the sheet is ejected. The sheet is reversed after passing by the reading position in each of the first and second transfer operations.

Abstract: An image reading device of the present invention includes a glass platen mounted on a support member. A rotary cam, a home position sensor and so forth allow the support member to move in reciprocation in a subscanning direction. When a document is conveyed along the glass platen, the glass platen is moved in the subscanning direction together with the support member. Consequently, a reading section and the reading position of the glass platen move relative to each other, obviating black stripes and other defects ascribable to contamination.

Abstract: In an automatic document feeder (ADF), a document separating mechanism includes a separator belt. Documents stacked on a tray are caused to abut against the separator belt at their leading edges and then introduced into a nip between the belt and a feed roller to be separated one by one. The angle at which the documents abut against the separator belt is variable. The separator belt is movably mounted on a guide pivotable about the shaft of a separator roller. The above angle refers to an angle between the surface of the documents stacked on the tray and the surface of the portion of the separator belt against which the documents abut.

Abstract: The image recording apparatus optically reads image data on a document with an image area or a plurality of image areas specified therein and synthesizes image data of another document read subsequently into the specified image area or image areas changing the size thereof as needed accordingly an image on the other document can be allocated with a desired size at an arbitrary position on the first document and printed on a sheet of recording paper, thus improving the work efficiency and convenience of the apparatus.