Fuji Xerox Co., Ltd.

Kanou Saitou

Takashi Kubo

Hajime Misumi

Fujio Osawa

Mitsunori Shioi

Tadakazu Tsutehira

Yuji Sato

Hideo Kageyama

Susumu Takagaki

Hiroyuki Sakai

Hiroshi Hayashi

Takayuki Yoshida

Akinori Ono

Toshihiko Mitsuhashi

Shigeaki Saito

Kyoichi Kawakita

Atsushi Iida

A printing apparatus includes a print section that performs printing according to print data, a registering section that registers in advance an information processing apparatus creating and transmitting print data in response to a print instruction from a user, and storing print data that has not been received by a transmission destination in a memory, a determination section that determines whether the print data that has not been received by the printing apparatus is stored in the registered information processing apparatus, when the printing apparatus changes from a data-reception state to a non-data-reception state, a request section that requests the information processing apparatus, in which the print data is determined to be stored, to transmit the stored print data, and a controller that controls the print section to perform printing according to the print data transmitted in response to the request, when the print data is received.

Printing apparatus, information processing apparatus, printing system, and computer readable medium

In the image forming apparatus, a color shift correction execution check unit detects positions of density correction patches of respective colors according to binary signals of density detection outputs by a density sensor on the density correction patches. When distances corresponding to intervals of time from starts of image drawing of the density correction patches of the respective colors to the detection of the positions of the density correction patches of the respective colors and distances between the density correction patches of the respective colors are shifted from a value, the color shift correction execution check unit determines color shift correction processing is required to be executed, and it gives an instruction to a color shift correction control unit to execute the color shift correction processing. And the color shift correction control unit forms a color shift correction patch to execute the color shift correction processing.

Image forming apparatus performing color shift correction process on binary data

A prediction table is stored in an NVM and an in-apparatus temperature is measured by a temperature sensor, a registration control adjustment based on the prediction table is carried out if an absolute value of a variation in the in-apparatus temperature is smaller than a threshold, and a registration adjusting patch is formed to actually measure a positional shift amount if the absolute value of the variation in the in-apparatus temperature is equal to or greater than the threshold. When the positional shift amount measured actually is greatly different from a value of the prediction table, the value of the prediction table is modified into the actually measured value.

Image forming apparatus

An image forming apparatus includes image forming sections that forms images of different colors, respectively, a correction image formation controlling section that forms correction images of the respective colors, a density sensor that detects a density of each of the correction images in synchronization with passage of each correction image on an image carrying body, a detecting section that detects a position and the density of each of the correction images, based on a binary signal of a density detection output of each of the correction images, a density correction controlling section that corrects and controls an image density of the color, based on the detected density of each of the correction images, and a color deviation correction controlling section that corrects and controls the color deviation, based on the detected position of each of the correction images.

An image forming apparatus includes a plurality of image forming units that form toner images in different color; an image carrier which carries the toner image of each color; a determination unit that determines, in relation to a size of image data instructed to print, whether or not a first area where a misregistration correcting image is formed at an end portion in a width direction of the image carrier is secured; a first control unit that controls the image forming unit; and a detection sensor that detects the misregistration correcting image formed on the image carrier by controlling of the first control unit; wherein the misregistration of the toner image formed by each image forming unit is corrected on a basis of a value detected by the detection sensor.

Image forming apparatus having misregistration correction of the toner image formed by each image forming unit

An image forming apparatus includes: a plurality of image forming units as defined herein; an image carrier as defined herein; a first operation controlling unit as defined herein; a second operation controlling unit as defined herein; a density detecting sensor that detects densities of the images formed on the image carrier; a measuring unit that binarizes a density detection output of the image position deviation correction patterns formed on the image carrier, from the density detecting sensor, and that measures intervals between color patterns of the image position deviation correction patterns, based on the binarized output; and a position deviation correction controlling unit that performs a position deviation correcting control of, when the intervals measured by the measuring unit and of the color patterns in the image position deviation correction patterns are deviated from a predetermined range, correcting position deviation of the toner images formed by the image forming units.

Tag side antennas attached at cartridge accessories and main body side antennas can be disposed sufficiently close to one another and facing one another without an increase in size of a device, even if the tag side antennas cannot be attached so as to cover end surface portions of the cartridge accessories and/or the number of the cartridge accessories mounted at the device main body is large. Tag side antennas disposed at each of toner cartridges are formed by conductive wiring in coil shapes. The toner cartridges are supported such that axes of these coils are substantially orthogonal to an insertion/removal direction at a cartridge holder. A main body side antenna is also formed by conductive wiring in a coil shape, has a coil axis substantially orthogonal to the insertion/removal direction, and may be supported interposed in a space between two of the toner cartridges.

Wireless communication system and image forming device

An image forming system wherein a predetermined monitor signal is applied to a transfer roll for estimating a resistance value of the transfer roll between one sheet of recording paper passing through the contact portion between a photosensitive drum and the transfer roll and the next sheet of recording paper being introduced into the contact portion and the transfer bias applied to the transfer roll is updated in response to the estimated resistance value. In the image forming system, if the time between one sheet of recording paper passing through the contact portion and the next sheet of recording paper being introduced into the contact portion is less than a predetermined time, updating of the transfer bias is inhibited, and further if updating of the transfer bias is inhibited successively a predetermined threshold value of the number of times or more, introduction of the next sheet of recording paper is delayed a predetermined time.

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Saitama, Japan

Kanou Saitou