Konica Corporation

Konica Minolta Business Technologies, Inc.

Konishiroku Photo Industry Co., Ltd.

Utami Soma

Atsushi Takahashi

Youbao Peng

Susumu Kurihara

Yasufumi Koseki

Hiroshi Oyama

Minoru Asakawa

Tadashi Matsudaira

Shinpei Kawasaki

Kazumichi Yamauchi

Takashi Tamura

Takashi Hasebe

Shuta Hamada

Jun Yokobori

Tetsu Sekine

Ryuji Okutomi

Saburo Shimizu

Chikatsu Suzuki

Seitaro Kasahara

Takashi Murahashi

Izumi Hamanaka

Kenichi Hosoi

Haruo Itakura

Hisao Sato

Seiichi Suzuki

Takanobu Fuse

Kazumi Ishi

Harufumi Yamashita

An image forming apparatus provided with an image forming section forming a reference mark at the position being away from the leading edge of the front surface of a sheet by a prescribed length, and forming an image for the front surface based on the forming position of the reference mark, a transfer sheet reversing section reversing the sheet, a leading edge detection sensor detecting the leading edge of the rear surface of the sheet and a mark detection sensor detecting the forming position of the reference mark on the sheet based on the leading edge of the rear surface of the transfer sheet, and the image forming section forms an image on the rear surface of the transfer sheet based on the forming position of the reference mark on the sheet whose reference point is the leading edge of the rear surface of the transfer sheet.

Image forming apparatus with detecting devices for image positioning on reversed sheet

An image forming apparatus for forming an image on a transfer sheet based on image data, comprises an operating section to determine a setup about a margin region on which an image is not formed at an edge portion of the transfer sheet, a control section to determine an inner region having a specified width and being adjacent to the determined margin region as a density change region in which an image density is changed, and determines a more inner region located inward more from the density change region as a regular density region in which an image is formed with a regular image density, and an image forming section to form an image in the density change region based on image data on the condition where the image density is reduced and to form an image in the regular density region based on image data without changing the image density.

Image forming apparatus and image forming method for setting a margin region, a density change region, and regular density region

The invention provides an image forming apparatus wherein, when forming an image on transfer sheet, the transfer sheet is shifted across the width immediately before transfer of the image onto transfer sheet based on the position of a toner image formed on an intermediate transfer member as an image carrier, and the misalignment across the width is adjusted, thereby ensuring high-speed and high-precision adjustment of the position of the image formed on a single side or both sides.

Image forming apparatus

There is described an image forming apparatus, in which a plurality of AC power cords are combined with each other, so as to stably supply the electric power to the loading sections from the combined points, regardless of the fluctuation of the electric power consumption in the loading sections coupled to the combined points. The image forming apparatus includes: a plurality of AC power cords that are respectively coupled to a plurality of AC power supplying sources, which are substantially equivalent to relative to each other in phase and amplitude of AC voltages of the plurality of AC power supplying sources; and a combining section to combine AC electric power units supplied through the plurality of AC power cords into a combined electric power, so as to supply the combined electric power to a load.

Image forming apparatus with plurality of AC power cords

An image forming apparatus having a main body unit for forming an image on a recording medium, connectable to at least one post-processing unit for performing post-processing for the recording medium on which the image is formed, the image forming apparatus includes, a current value acquiring portion for acquiring at least one of a calculated value of a current and a measured value of the current as a value of the current flowing through the main body unit, and a control portion for selecting an operation mode from a plurality of operation modes each having a distinct value of current flowing through the main body unit.

Image forming apparatus and image forming system

An image forming apparatus comprising: an image forming section to form a toner image based on print data; a transfer section to transfer the toner image onto a transfer sheet; a fixing section to fix the toner image transferred onto the transfer sheet; a cleaning section for cleaning at least one of the image forming section, the transfer section and the fixing section; and a control section to determine an existence area of a real image in a print image based on the print data, to determine a size of the transfer sheet, onto which the print image is printed and to control the cleaning device based on determinations of the image determination section and the transfer sheet size determination section.

Cleaning system for an image forming apparatus for margin-less printing and control method thereof

An image forming apparatus for communicating with a management apparatus for storing a plurality of electronic prepaid information and authentication information related to the plurality of electronic prepaid information, and replaying to inquiry request for electronic prepaid information based on authentication information through a portable communication terminal storing authentication information. The image forming apparatus may include a connector to which the portable communication terminal is connected, a communication section for controlling the portable communication terminal and controlling communication with the portable communication terminal, a reading section for reading authentication information out of the portable communication terminal, an inquiry request section for sending authentication information and requesting the management apparatus to inquire the electronic prepaid information, a receiving section for receiving the electronic prepaid information, and an image forming control section for controlling whether to perform image processing.

An image forming apparatus that forms an image on a surface of a transfer sheet, then, reverses the transfer sheet on which the image has been formed on the surface and then, forms an image on the reverse side of the transfer sheet, wherein there is provided a correcting section that changes a relative position between the transfer sheet and the image on the surface in accordance with an outer shape of the transfer sheet and further changes a relative position between the transfer sheet and the image on the reverse side of the transfer sheet in accordance with an outer shape of the transfer sheet.

An image forming apparatus providing services for general users, capable of getting rid of trouble to collect use charges. The image forming apparatus has: a connector to which a portable communication terminal is connected; a communication section for controlling the portable communication terminal connected to the connector, and controlling communication with the portable communication terminal and a management apparatus; a reading section for reading authentication information out of the portable communication terminal; an inquiry request section for sending the authentication information to the management apparatus, and requesting the management apparatus to inquire the electronic prepaid information based on the authentication information; a receiving section for receiving the electronic prepaid information replied by the management apparatus through the communication section; and an image forming control section for controlling whether to perform image forming processing or not on the basis of the electronic prepaid information.

An image forming apparatus is equipped with a document reading device for reading image data on a document at a reading section; a memory to store the image data therein, the memory capable of storing the image data of plural pages of documents; and an image recording system for recording an image on a recording sheet based on the image data stored in the memory. A recording sheet reversing system receives the recording sheet from the image recording system, wherein the image is recorded on one side of the recording sheet, reverses the recording sheet, and refeeds the reversed recording sheet to the image recording system without stacking the recording sheet, whereby another image is recorded on the other side of the recording sheet by the image recording system. A controller controls the document reading device and the image recording system such that, when images are recorded on both sides of a recording sheet by the recording sheet reversing system, after image data of a predetermined number of pages of documents are read by the image recording system and are stored in the memory, the image recording system starts recording images based on the image data stored in the memory simultaneously as the document reading device successively reads other pages of documents.

A copying system includes a plurality of copying apparatuses, a communication line interconnecting the plurality of copying apparatuses with each other such that the plurality of copying apparatuses can communicate image data therebetween, and a controller. The controller controls the copying system such that: (i) several or all of the plurality of copying apparatuses produce copying materials in parallel according to image data read by one of the plurality of copying apparatuses, and (ii) at least one of the several or all of the plurality of copying apparatuses receive image data of a next job while a present job is being conducted.

Copying system having plural copying machines

An image recording apparatus, such as a copier or a printer which is capable of connecting with another recording apparatus, includes: a memory for storing image data corresponding to plural document pages; a mode selector for selecting one of a master mode in which the image data, stored in the memory, are transferred to the other image recording apparatus, and a slave mode in which the image recording apparatus receives image data transmitted from the other image recording apparatus; and a transmission/receiving controller for controlling transmitting and receiving of the image data according to the selection of one of the master and the slave modes. In the apparatus, the image data transmitted from the other image recording apparatus are stored in the memory and the image corresponding to the image data stored in memory is recorded on a recording paper. The recording operation is independent from an operation of the other image recording apparatus when the slave mode is selected.

Image forming apparatus having an interface to connect with other image

A copier for recording images of plural documents on recording sheets. The copier includes: a scanner for reading the images of the documents by photoelectrically converting the images so as to obtain image data corresponding to the images; a document feeder for sequentially feeding the documents to the scanner; a memory for storing the image data, including plural data compression/expansion circuits for compressing and expanding the image data, a selector for selecting one of the plural data compression/expansion circuits, and a memory member for storing the image data compressed by the selected one of the plural data compression/expansion circuits; a printer for forming images, corresponding to the selected image data from the memory, on the recording sheets; and a controller circuit for generating memory data overflow signals when a remaining area of the memory member is not more than a predetermined value. The controller also controls the document feeder, the scanner, and the memory in response to the memory data overflow signals so that the scanner stops reading the images, the memory changes a compression ratio of the image data to a higher ratio, the document feeder feeds back the documents to an original order, and reads the documents from a first one.

Image recording apparatus with a memory means to store image data

An image forming apparatus includes: a first sheet feeding device for storing therein recording sheets; a second sheet feeding device for storing therein the same sized recording sheets as those stored in the first sheet feeding device in a direction perpendicular to the recording sheets stored in the first sheet feeding device; an image processing device capable of processing an image of a document under a condition that an image data thereof is rotated by 90.degree.; an image forming device for forming an image on a recording sheet based on the image data processed by the image processing device; and a controller for detecting whether or not a sorting device for sorting the recording sheet is connected or operative. When the controller detects that the sorting device is neither connected nor operative, the controller controls the image processing device to carry out alternately a first image processing for forming the image by a regular image processing and a second image processing for forming the image under the condition that the image data is rotated by 90.degree. to the image data by the regular image processing, and selects one of said first and second sheet feeding devices in accordance with the first and second image processing.

Image forming apparatus with sorting function

An image forming apparatus includes an image carrier for forming an image thereon; a sheet feeding device for feeding a recording sheet to the image carrier to transfer the image onto the recording sheet; a reversing device for reversing the recording sheet on one side of which the image has been transferred and then which has been fixed, at a conveyance path in the reversing device and for feeding the recording sheet onto the image carrier to form another image on a rear side of the recording sheet; a detection device provided between the conveyance path and the image carrier for optically detecting an amount of skew or an mount of shift of the recording sheet. The apparatus further includes controller for judging the amount of skew or the amount of shift to be malfunctional when the amount of skew or the amount of shift exceeds a predetermined value, and for modifying image forming conditions thereafter.

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Hachioji, Japan

Utami Soma