摘要:
According to one embodiment, an inkjet recording apparatus includes a sensor, a first controller and a second controller. The sensor is provided upstream of an inkjet head in a paper transport direction and detects a state of an image forming surface of a paper. The first controller determines whether the image forming surface subjected to the state detected by the sensor is printed with a coloring material other than inkjet inks. The second controller controls to discharge the paper without image formation on the image forming surface with the inkjet head if the image forming surface is printed with the coloring material other than the inkjet inks.
摘要:
An ink jet recording apparatus includes a color processing unit that converts print data to color data, a reaction liquid ejecting unit that has plural nozzles arranged and ejects a reaction liquid onto a recording medium, an ink ejecting unit that has plural nozzles arranged and ejects an ink onto the recording medium based on the color data, a subscanning driving unit that conveys the recording medium having an image formed by the ink ejecting unit, and a controlling unit that controls to a constant value a ratio of an amount of droplets of the reaction liquid ejected by the reaction liquid ejecting unit and a total amount of ink droplets of the ink ejected by the ink ejecting unit, with respect to each of pixels of the image formed on the recording medium.
摘要:
In general, according to one embodiment, an inkjet recording apparatus includes an inkjet head, a conveyance motor, a discharge motor, a printing medium surface sensor and a controller. The inkjet head ejects ink on a printing medium. The discharge motor causes discharge of the printing medium. The printing medium surface sensor, locates at the upper-stream side of the inkjet head apart from the inkjet head in a printing medium conveyance direction, senses a foreign substance representing an image printed on the printing medium beforehand. The controller drives the discharge motor to discharge a printing medium without ejecting ink from the inkjet head if an after-printing mode in which printing is made on the printing medium on which the image is printed beforehand is not set if the foreign substance is detected on the printing medium through the printing medium surface sensor.
摘要:
An ink jet recording apparatus includes a storage part to store a recording medium, an image forming part that forms an image by ejecting an aqueous ink to the recording medium conveyed from the storage part, a separation part that includes a slit to allow the recording medium to pass from the storage part to the image forming part, and an opening and closing part to open and close the slit, and separates the storage part and the image forming part, a detection part to detect conveyance of the recording medium from the storage part to the image forming part, and a control part to control opening and closing of the opening and closing part in accordance with a detection result of the detection part.
摘要:
According to one embodiment, an inkjet image forming apparatus includes an inkjet head which ejects an aqueous ink, a recording medium reversing mechanism for reversing a recording medium, and a controller. The controller performs control such that if a both-side recording mode is designated, the location information of an overlapping region of images to be recorded on the front surface and the rear surface is detected, based on the detected recording image location information on the front surface and the rear surface, the density of the images to be recorded at the location on the front surface and the rear surface is determined, and if the image density on one surface is higher than the image density on the other surface, the image density at the location on the one surface is reduced, and controls the inkjet head based on the control.
摘要:
According to one embodiment, an ink-jet image forming apparatus includes an ink-jet head ejecting an aqueous ink to form an image on a surface of a recording medium, a carrying belt carrying the recording medium and at least a part of which is situated upstream from the ink-jet head in a direction of carrying the recording medium, and a solution adhering unit adhering a solution to a water-retentive surface of the carrying belt.
摘要:
An image recording apparatus includes a conveyance unit which includes a conveyance belt and an air suction unit for sucking air through the conveyance belt to adsorb a recording medium onto the conveyance belt. A recording head ejects ink to carry out recording on the recording medium conveyed by the conveyance unit. An adsorption force adjusting unit adjusts the adsorption force for the recording medium on the conveyance belt, which occurs by sucking air, according to the size of the recording medium.
摘要:
Time T (ms) required for an ink droplet ejected onto a recording medium to be absorbed completely by the recording medium is represented by: T=(4V/&pgr;D2Ka)2, where V represents a maximum amount (ml) of the ink droplet ejected from the recording head in a single operation, D represents an average diameter (m) of an equivalent circular area of the dot when the ink droplet impinges on the recording medium, and Ka represents an ink absorption coefficient (ml/m2 ·ms½) of the recording medium. The conditions of T, V, D and Ka are set to meet the relationship T≦Tx (ms), where Tx represents the time between a step for a first ink droplet to impinge on a certain position of the recording medium and another step for a second ink droplet to impinge on the same position of the recording medium. In other words, T, V, D and Ka are set to meet the relationship: 4V/&pgr;D2Ka)2