Fuji Xerox Co., Ltd.

Masami Furuya

Toshio Koyama

Toyohiro Takahashi

Hideo Kobayashi

Tsutomu Ishii

Hiroshi Ikeda

Jun Isozaki

Takeshi Zengo

Akira Mihara

Hiroaki Satoh

Atsushi Murakami

Susumu Kibayashi

Yuji Murata

Kenichi Kawauchi

Takeshi Fuse

Kishiharu Itazu

Takamaro Yamashita

Kenichi Owa

A drive device for a display medium includes a control unit that controls density of a display color of a predetermined range in which glare may likely occur, of display colors of an image displayed on a reflective type display medium, based on brightness information indicating brightness of irradiation beams irradiated on the display medium so that occurrence of the glare as to the display color of the predetermined range can be suppressed.

Drive device, non-transitory computer readable medium, process for display medium and display apparatus

In the case where, by driving nozzles, test images are formed on paper so that the area of a width predetermined from an end portion in an intersecting direction that intersects with a transporting direction of the paper of a reading area of image reading units is not included in the test images, and the nozzles in an abnormal state are detected by using reading data obtained by reading by the image reading units, the application scope of the reading data applied for detection of an abnormal state is determined so that reading data of each of the test images formed by the nozzles as a detection target of an abnormal state is not repeatedly included with regard to each nozzle, and the nozzles in an abnormal state are detected by using the reading data in the determined application scope.

Image forming device and non-transitory computer readable medium

An image forming apparatus includes: plural recording elements that are arrayed along a crossing direction; a reading unit that sequentially reads an image formed on a recording medium; a forming unit that drives the recording elements that are continuously arrayed along the crossing direction so as to form at least one reference image on the recording medium, and then makes timings for driving the recording elements continuously arrayed in the crossing direction different from each other so as to form detection images on the recording medium; and a detection unit that detects the recording element in an abnormal state by changing a size of at least one of a threshold value and a detected value based on the detection image read by the reading unit when the recording element in the abnormal state is detected using the detected value and the threshold value.

Image forming apparatus, image forming method and non-transitory computer readable medium

A liquid droplet ejection apparatus comprising: a conveyor portion that conveys a recording medium to a liquid droplet ejection region by the rotational force of a drive roll; liquid droplet ejection heads that eject liquid droplets onto the recording medium conveyed to the liquid droplet ejection region by the conveyor portion; a feed portion that feeds the recording medium to the conveyor portion at a predetermined feed timing; a detection portion that detects a rotational position of the drive roll; and a control portion that controls the feed timing of the feed portion based on the rotational position that the detection portion has detected, so that when the drive roll reaches a predetermined rotational position, the control portion causes the recording medium to be conveyed to the liquid droplet ejection region and causes the liquid droplet ejection heads to start ejecting the liquid droplets onto the recording medium, is provided.

Liquid droplet ejection apparatus

In a droplet ejecting apparatus, a detection pattern output unit drives a droplet ejecting head based on a pulse signal and image information of a detection pattern comprising plural unit patterns so as to form an image of the detection pattern on a recording medium. A correction information generating unit derives a distance between adjacent unit patterns based on the image of a read detection pattern, compares the distance with a distance according to the conveyance velocity of the recording medium by a moving unit, and generates correction information so as to enlarge the pulse width when the derived distance is shorter, and to reduce the pulse width when the derived distance is longer.

Droplet ejecting apparatus

The present invention provides a droplet ejection device that includes a head, a storage component and an alteration component. At the head, a plurality of nozzles, which eject droplets in accordance with image data representing an image, are arrayed over a width in a main scanning direction which is longer than a recording region width. The head forms a main scanning line with the droplets ejected from the nozzles. At the storage component, inclination information relating to an inclination of the main scanning line formed by the head with respect to a main scanning line that should ideally be formed is pre-stored. The alteration component, in accordance with the inclination information stored at the storage component, alters which nozzles are to eject droplets in accordance with the image data.

Droplet ejection device, droplet ejection device control method and storage medium storing droplet ejection device control program

In an image recording apparatus, reference patterns are provided on a surface of a transport belt that transports a recording medium such as paper attracted thereto to image recording sections defined by recording heads. It is arranged such that the reference patterns are detected while being transported as the transport belt is driven, and a speed change of the transport belt and a position shift in a direction perpendicular to the transporting direction of the transport belt are calculated based on information resulting from the detection, thereby controlling ejection timing and ejection position of ink droplets ejected from the recording heads.

Image recording apparatus

A liquid droplet ejection apparatus includes a conveyor unit that conveys a recording medium, liquid droplet ejection head that records an image by ejecting liquid droplets onto the recording medium conveyed by the conveyor unit, and a controller that increases or decreases ejection timing of the liquid droplet ejection head in amounts equal to a correction time determined based on conveyance speed data of the conveyor unit such that a shift amount generated in a period from when the liquid droplet is ejected to when the liquid droplet lands on the recording medium becomes constant with respect to a reference position.

An ink jet injection system performs detecting an ink injection condition by ejecting ink droplets so as to form a detecting pattern on a recording medium. When the detecting pattern is formed, the ink droplets are ejected at almost the same position in the state in which the transportation of the recording medium is stopped or a feeding speed of the recording medium is set slower than that during a normal printing operation.

Ink jet system

Line feed is performed for blank lines and the head is positioned at FIG. 11B for the image to be printed which is indicated at FIG. 11A. In this state, the first printing is performed in a striped pattern in the recording areas (4) and (6). This improves print quality of a straight line following a blank part. After line feeding, the head is positioned at FIG. 11C. The second printing is performed in a striped pattern which interpolates the first printing in the recording areas (4) and (6). Simultaneously, the first printing is performed in a checkered pattern in the recording areas (5) and (7) to improve the quality of the extensive image.

Recorder and print control method using various print patterns to print

In a black mode, image data for each color corresponding to the printing width of a black head are pre-read. If there is no color data, all the pre-read black data are printed. If there is some color data, black data are printed up to data just before the color data and then the mode is switched over to a color mode. In the color mode, image data corresponding to the printing width of each color in a color head are pre-read. If there is no color data, data are further pre-read up to data corresponding to the printing width of the black head. If there is further no color data, all data up to the current position of the head are printed in the color mode and then the mode is switched over to the black mode. Otherwise, printing by the printing width of each color in the color mode is continued.

Printing control method and apparatus using the same method

A serial printer has a moving unit for relatively moving a printing unit and a printing medium in two directions orthogonal to each other, and a detecting unit for detecting a trailing edge of the printing medium. The printing unit and the printing medium are relatively moved in a fast scan direction to print on the printing medium print data of a printing width of the printing unit. The printing unit and the printing medium are then relatively moved in a slow scan direction by a fixed distance corresponding to the printing width of the printing unit. The printing operation is then repeated. The number of nonprint lines for a final printing width is calculated by the serial printer based on a position of the trailing edge of the printing medium detected by the detecting unit. The print data of the final printing width is printed so that print data corresponding to the number of nonprint lines is absent.

Serial printer and printing method therefor

A dot judgment circuit judges whether there exists color information in dot-pattern-developed image data of pixels around a black pixel under attention. When not finding the existence of color information, the dot judgment circuit selects a head driver for driving a recording head for jetting a slow drying black pixel. When finding the existence of color information, the dot judgment circuit selects a head driver for a recording head for jetting a quick drying black ink or head drivers for recording heads for jetting quick drying Y, M and C inks.

Color ink jet recording apparatus capable of high-quality printing of

An ink jet recording device having a capability of detecting the life of an ink jet recording head. The ink jet recording device includes a size sensor for generating a paper size signal relating to a size of a printing paper; a detecting device for detecting the number of print scans of the recording head; a converting device for counting the number of print scans detected by the detecting device without correction when the size of the printing paper is a predetermined paper size and for converting the number of print scans detected by the detecting device into the number of print scans corresponding to the predetermined paper size to count the converted number of print scans when the size of the printing paper is any size other than the predetermined paper size; an accumulating device for accumulating the number of print scans counted by the converting device; and a memory for storing the number of print scans accumulated by the accumulating device. The ink jet recording device further includes an informing device for informing the number of print scans accumulated by the accumulating device. Accordingly, the expiration of the life of the recording head can be easily and reliably predicted.

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Kanagawa, Japan

Masami Furuya