Patent application number | Description | Published |
20090052917 | Image forming apparatus - 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. | 02-26-2009 |
20090073211 | IMAGE FORMING APPARATUS - 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. | 03-19-2009 |
20090074461 | IMAGE FORMING APPARATUS, BELT UNIT, AND BELT DRIVING CONTROL METHOD - An image forming apparatus for forming an image on a recording medium includes a belt configured to travel rotationally and looped around at least two rotary support members, a driven rotary member disposed facing at least one of the rotary support members via the belt and configured to rotate with the belt, and a controller. The controller is configured to minimize fluctuation in one of a travel velocity and a travel distance of the belt by controlling the travel of the belt based on one of a rotational angular displacement and a rotational angular velocity of each of the rotary support member and the driven rotary member. | 03-19-2009 |
20090102908 | CONVEYING APPARATUS, LIQUID APPLYING APPARATUS, AND IMAGE FORMING APPARATUS - A disclosed conveying apparatus includes plural conveyance paths arranged in parallel and configured to receive plural conveyance objects fed from an upstream side of the plural conveyance paths and convey the received plural conveyance objects to a conveyance destination situated at a downstream side of the plural conveyance paths. The plural conveyance paths are configured to convey the plural conveyance objects in the order in which the plural conveyance objects are received. | 04-23-2009 |
20090121422 | PAPER CONVEYING APPARATUS, IMAGE FORMING APPARATUS AND INK-JET RECORDING APPARATUS - A sheet of paper is conveyed by a convey roller to a print receiving member and pushed forward thereon while being supported by ribs and pressed downward by pressing members so as to keep a predetermined distance between the paper and a recording head while an image is printed on the paper. Since the pressing members press respective side portions of the paper, the paper can be bent downward outside the outmost ribs and prevented from rising at the side portions. | 05-14-2009 |
20100245420 | IMAGER FORMING APPARATUS AND FOAM APPLICATION DEVICE - A disclosed image forming apparatus comprises an image forming unit configured to form an image on a to-be-recorded medium, and a foam application unit configured to apply foam of at least one of a liquid and a gel to the to-be-recorded medium or an intermediate member. The intermediate member is configured to apply the foam to the to-be-recorded medium. The foam application unit includes a storage unit configured to store the foam and spread the foam in a width direction of the to-be-recorded medium or the intermediate member, an applicator configured to apply the foam to the to-be-recorded medium or the intermediate member, and a transport unit configured to transport the foam from the storage unit to the applicator. | 09-30-2010 |
20100245460 | Image Forming Apparatus And Foam Application Device - A disclosed image forming apparatus is capable of solving the problems of deterioration of a foam application function and driving systems caused by the dried and fixed foam remaining without being applied. The image forming apparatus includes a foam forming section forming foam, a reservoir section supplying foam formed by the foam forming section to an application roller, a discharge channel through which extra foam is collected from the reservoir section, and a heating unit for heating the extra foam to return the extra foam to a liquid form. The discharged liquid prepared by defoaming the foam discharged through the discharge channel is returned to a container containing the defoamed liquid. | 09-30-2010 |
20110057988 | IMAGE FORMING APPARATUS AND FOAM APPLICATION DEVICE - An image forming apparatus is disclosed that includes an image forming unit that forms an image on a medium to be recorded; and a foam application unit that applies a foam generated from at least any one of a liquid and a gel to the medium to be recorded or an intermediate member for applying the foam to the medium to be recorded. The foam application unit has a foam generation unit that generates the foam, an application unit that applies the generated foam to the medium to be recorded or the intermediate member, a foam supplying path through which the generated foam is supplied to the application unit, and a unit that increases a volume of the foam supplying path. The foam application unit increases the volume of the foam supplying path when stopping the supply of the foam to the application unit. | 03-10-2011 |
20110220017 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit for forming an image on a medium; and an application device for applying a treatment liquid to the medium. The application device includes a conveying roller; an application roller for applying the liquid; a squeeze roller for reducing the thickness of the liquid on the application roller; and a tray for supplying the liquid to the squeeze roller. In the application operation, the application and squeeze rollers come in contact, and a valley formed by these rollers faces upward. In the standby condition, at least one of the application and squeeze rollers is moved to such a position that the valley faces laterally. The tray always covers the lower side of the application and squeeze rollers in regions near the longitudinal end portions of the application roller, which end portions do not come in contact with the conveying roller. | 09-15-2011 |
20110310185 | IMAGE FORMING APPARATUS AND TREATMENT-LIQUID APPLICATION DEVICE - An image forming apparatus includes a treatment-liquid application unit applying a treatment liquid from a chamber to a recording medium; a treatment-liquid storage unit to store the liquid; a supply channel member forming a supply channel to supply the liquid from the treatment-liquid storage unit to the chamber; a collection channel member forming a collection channel to collect the liquid from the chamber; and a temporary storage portion disposed in the collection channel to temporarily store the liquid. The temporary storage portion has an internal horizontal cross-sectional area greater than a channel cross-sectional area of the collection channel. The collection channel member has a first channel portion of a channel cross-sectional area smaller than the internal horizontal cross-sectional area of the temporary storage portion. A liquid level of the liquid in the collection channel is maintained in the first channel portion after termination of collecting operation. | 12-22-2011 |
20120060754 | IMAGE FORMING APPARATUS AND TREATMENT LIQUID APPLICATION DEVICE - An image forming apparatus includes an image forming unit to form an image on a recording medium and a treatment-liquid application device to apply a treatment liquid to the medium. The application device includes a conveyance roller to convey the medium, an application roller to apply the liquid to the medium, a squeeze roller to spread the liquid on the application roller to form a thin layer of the liquid on the application roller, and a housing member to retain the application roller and the squeeze roller within the housing member and cover outer circumferential surfaces of the application roller and the squeeze roller. The housing member has an opening to contact the application roller with the conveyance roller through the opening and a storage portion to store the liquid. The housing member is rotatable while retaining the application roller and the conveyance roller within the housing member. | 03-15-2012 |
20120160161 | IMAGE FORMING APPARATUS AND LIQUID APPLICATION DEVICE - An image forming apparatus includes an application device. The application device has an application roller to apply a treatment liquid onto a recording medium before an image is formed on the recording medium. The application roller has a core member serving as a rotation shaft of the application roller and an elastic surface member disposed around the core member. The core member has a plurality of convex ring portions formed along a circumferential direction of the core member around a circumferential surface of the core member and a plurality of concave ring portions formed between the plurality of convex ring portions. The convex ring portions and the concave ring portions are alternately arranged. | 06-28-2012 |
20120249627 | IMAGE FORMING APPARATUS - An image forming apparatus including an image forming device forming an image on a surface of a recording material; a recording material passage; a treatment liquid applicator including a tray containing a treatment liquid, a first roller applying the treatment liquid to the surface of the recording material, and a second roller drawing the treatment liquid from the tray to supply the treatment liquid to the first roller; a liquid level inclination detector detecting whether the surface of the treatment liquid is inclined; a treatment liquid supplying device supplying the treatment liquid to the tray; and a controller connected with liquid level detector and the treatment liquid supplying device. The controller stops the operation of the treatment liquid supplying device when determining according to the detection result of the liquid level detector that the surface of the treatment liquid is inclined in a predetermined amount or more. | 10-04-2012 |
20120262519 | TREATMENT LIQUID APPLICATION DEVICE AND IMAGE FORMING APPARATUS - A treatment-liquid application device includes a treatment-liquid container, a liquid supply unit, a liquid chamber unit, a treatment-liquid carrier, a transport unit, a treatment-liquid applicator, and a partition. The partition is disposed in an area of the chamber unit defined by an imaginary entry plane, an imaginary exit plane, a carrying surface of the carrier, and a bottom face of the chamber unit. The entry plane includes an entry line at which the carrying surface enters treatment liquid in the chamber unit, and vertically extends from the entry line. The exit plane includes an exit line at which the carrying surface exits from the liquid in the chamber unit, and vertically extends from the exit line. The partition extends in a longitudinal direction of the carrier and has an edge portion adjacent to the carrying surface. | 10-18-2012 |
20120292848 | PAPER CONVEYING APPARATUS, IMAGE FORMING APPARATUS AND INK-JET RECORDING APPARATUS - A sheet of paper is conveyed by a convey roller to a print receiving member and pushed forward thereon while being supported by ribs and pressed downward by pressing members so as to keep a predetermined distance between the paper and a recording head while an image is printed on the paper. Since the pressing members press respective side portions of the paper, the paper can be bent downward outside the outmost ribs and prevented from rising at the side portions. | 11-22-2012 |
20140267486 | IMAGE FORMING APPARATUS AND METHOD CAPABLE OF WEAKENING ELECTRIC FIELD FORMED UNDER PRINTING HEAD - An image forming apparatus includes a printing device; a printing medium conveying unit to convey a printing medium, a first electric charger to charge the printing medium conveying unit, a second electric charger to charge the printing medium conveyed by the printing medium conveying unit, a first surface potential detector to detect a surface potential of the printing medium bearing the electric charge, a second surface potential detector to detect a surface potential of the printing medium bearing the electric charge, and a controller to adjust a power supply voltage supplied to each of the first and second electric chargers in accordance with each of surface potentials detected by the first and second surface potential detectors. The first and second surface potential detectors are located at different positions in a conveying direction in which the printing medium is conveyed by the printing medium conveying unit. | 09-18-2014 |