Fuji Xerox Co., Ltd.

Naoki Hirako

Keita Kumokiri

Hideo Kimura

Shun Kuwahara

Hiroyuki Funayama

Izumi Suda

Masato Saito

Keiji Yamamoto

Makoto Ochiai

Mitsugu Kamio

Takashi Nagai

Yoshiyuki Mizuki

Shinya Utsushikawa

Yuichi Deguchi

A supply control device includes: a deciding unit that decides an order of plural containers that supply recording media to an image-forming unit that forms an image on a recording medium; a specifying unit that specifies one of the plural containers; a determining unit that determines for each of the plural containers whether recording media stored in the container are available for forming an image, in the order decided by the deciding unit, in which the container specified by the specifying unit is set as a starting point; and a supply unit that retrieves a recording medium from a container whose recording media have been determined by the determining unit to be available for forming an image, and supplies the recording medium to the image-forming unit.

Supply control device, image-forming device, supply control method, and computer readable medium

A controller includes: a sub-control substrate that includes a first memory storing first control information to be used for controlling at least one of a plurality of modules of a processing apparatus, and controls the at least one of the plurality of modules by using the stored first control information while the controller is connected to the processing apparatus; and a main control substrate that includes a second memory and controls an operation of the sub-control substrate; and wherein: if a first operation is performed, the main control substrate acquires second control information that is to be used for controlling at least one of the plurality of modules and is determined from the first control information, and stores the acquired second control information in the second memory, when the controller is connected to the processing apparatus, and a second operation is performed, the main control substrate supplies the second control information stored in the second memory to another controller included in the processing apparatus, and stores the second control information in the another controller.

Controller, control apparatus, and image-forming apparatus

An image forming apparatus includes an image formation unit, a conveying unit and controller. The image formation unit includes a rotating photoreceptor, a latent image formation unit, a developing unit, a first transfer unit, and a second transfer unit. Regardless of forming or not forming on the photoreceptor a belt-shaped image which is not being transferred onto a recording medium, the controller controls the image forming unit such that formation of an image quality adjusting image that is not transferred to the recording medium starts from a predetermined position in a rotational direction of the photoreceptor, and such that the recorded image is formed further downstream in the rotational direction of the photoreceptor than an image quality adjusting image region.

Image forming apparatus, method, and program storage medium

An image-forming apparatus includes: a forming unit that forms an image on an image holder that is a rotating body holding an image; a measuring unit that measures a rotation amount of the image holder with reference to a certain position on the image holder; a determining unit that: identifies a position on the image holder from which an image is to be formed by the forming unit, according to the rotation amount measured by the measuring unit; if, while a plurality of images are successively formed on the image holder, an image for density correction is to be formed, postpones forming of the image for density correction until a timing arrives at which one image of the plurality of images is to be formed from a predetermined position on the image holder, and when the timing arrives at which the one image of the plurality of images is to be formed from the predetermined position on the image holder, determines to start forming of the image for density correction from the predetermined position, instead of forming the one image of the plurality of images; and a correction unit that obtains a reading result of the image for density correction formed by the forming unit from the predetermined position, and corrects a density of at least one of the plurality of images on the basis of the obtained reading result.

Image-forming apparatus and image-forming method for forming a density correction image

An image-forming apparatus allows duplex print to be performed using tabbed sheets. A plurality of paper sensors A, B, C, D, E, and F are installed on a paper output side of a paper tray in a direction perpendicular to a sheet transport direction. The location of a tab and the tab length in the transport direction are determined from a difference in timings of the rise or fall of output signals from the paper sensors A-F. When the tab is located on the leading edge of the sheet in the transport direction and does not traverse a transport control sensor X, operation timing of a device &agr; which is activated based on the timing of the rising of output signal from the transport control sensor X is advanced by an amount corresponding to the length of the tab . On the other hand, when the tab traverses the transport control sensor X, or when a sheet without a tab is used, the operation timing is not advanced. Accordingly, it becomes possible to determine an appropriate operation timing even when a sheet is inverted or reversed for duplex printing.

Apparatus and method for sheet transport control

As a control method of an image formation apparatus having an image formation apparatus main unit and a postprocessing unit , when paper jam (1) occurs in the postprocessing unit paper jam (2) is caused to occur at a paper ejection position at the last stage in the image formation apparatus main unit and the paper stop position is controlled in the image formation apparatus main unit based on the paper jam (2).

Image formation apparatus and method for controlling a paper stop position

An image forming apparatus is provided which can compatibly realize maintenance of optimum fixing speeds according to fixing characteristics of recording sheets and toner images and a reduction in the size of the apparatus itself as well as an improvement in the productivity of image formation, and which is free of many restrictions such as sizes, transfer speeds, fixing speeds and transfer positions of recording media to be used as well as lengths and fixing positions of transporting units. An image forming apparatus comprises a transfer section for transferring a toner image to recording sheets at a predetermined transfer speed, a fixing section for fixing the toner image transferred to the recording sheet at a predetermined fixing speed, a transporting device for continuously transporting the recording sheet from the transfer section to the fixing section at a predetermined transporting speed and with a predetermined space, a control device for controlling a transporting speed of the transporting device so that a transporting speed and a fixing speed of the recording sheet become approximately equal to each other when a leading edge of the recording sheet reaches the fixing section, a detecting device for detecting a transporting-direction length of the recording sheet, and a space control device for controlling a space between a preceding recording sheet and a succeeding recording sheet according to a transporting-direction length of the preceding recording sheet of recording sheets.

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Ebina, Japan

Naoki Hirako