Mita Industrial Co., Ltd.

Kyocera Mita Corporation

Kyocera Document Solutions Inc.

Hidehiro Tabuchi

Hiromi Sakata

Junichi Oura

Toshihide Higashimori

Masaru Watanabe

Yasuyuki Ishiguro

Yukio Hashimoto

Hiroyuki Hazama

Kazuhiro Mizude

Koji Maeda

Yoshiki Yoshioka

Tomohiro Kuwahara

Masahiro Tsutsumi

Hidekazu Sakagami

Yasuhiro Matsuo

Yoshinobu Takemura

Kouichi Kimura

Masami Yamada

Yasuhiko Kida

Katsuji Furushige

Yoshihisa Tanaka

Shigeo Kurando

Shinya Matsui

Masahiro Higashitani

Hiroyuki Tsuji

Yasuyuki Hirai

Shingo Mori

Tadashi Fujioka

Mitsuru Adachi

Kazuhiro Morimoto

Kouji Ujino

An image forming apparatus includes a plurality of discharge portions, an execution control portion, and a permission/nonpermission setting portion. The execution control portion is capable of, in a case where a print process is to be executed in a state where there are one or more sheets in a specific discharge portion that is preliminarily set from among the plurality of discharge portions, holding an execution of the print process, wherein in the print process, an image is formed on a sheet and the sheet with the image is discharged to the specific discharge portion. The permission/nonpermission setting portion sets, in response to a user operation, whether to permit or not permit holding of the execution of the print process by the execution control portion.

Image forming apparatus capable of avoiding mixture of prints, image forming method

A relay conveyance device includes a relay conveyance path arranged between an image forming apparatus and a post processing device to convey a sheet from the image forming apparatus to the post processing device, two reversing units reversing a surface side and a back-face side of the sheet, and a control device controlling conveyance of the sheet on the relay conveyance path. The relay conveyance path includes two reverse paths respectively passing through the two reversing units, a branch section branching into the two reverse paths at an upstream side, and a confluence section joining the two reverse paths. The control device controls the branch and confluence sections to convey the sheet while alternately switching the two reverse paths, measures an interval time between the sheets passing through the confluence section, and controls conveyance of the sheet in the two reverse paths so as to uniformize the interval time.

Relay conveyance device

An image forming system includes an image forming apparatus and a postprocessing device. The image forming apparatus includes a first communication unit, a paper feeder, and a first control unit. The postprocessing device includes a second communication unit, a postprocessing unit, and a second control unit. The second control unit obtains a first time to perform the postprocessing and a second time to transition to a performable state configured to perform the postprocessing. The first control unit obtains attribute information necessary for the second control unit to obtain the first time and the second time. When the second communication unit receives the attribute information, the second control unit transmits information indicating the first time and the second time. The first control unit controls the operation of the paper feeder based on the information indicating the first time and the second time received by the first communication unit.

Image forming system including image forming apparatus and postprocessing device, and image forming apparatus and postprocessing device available for image forming system

Provided is a document feeding device including: a document feeding portion for feeding a document; a document set detecting portion for detecting presence/absence of a set document; a determination portion for determining whether power supply to the device is started by turning-on of main power or by cancellation of a power saving mode; an initial operation portion for performing an initial operation of initializing the document feeding portion when the power supply to the document feeding device is started by the turning-on of the main power, and restricting execution of the initial operation when the power supply to the document feeding device is started by the cancellation of the power saving mode; and a display portion for displaying, when there is a set document at the start of the power supply, a request to reset the document.

Document feeding device that performs an initial operation, image forming apparatus including the same, and method of controlling a document feeding device that performs an initial operation

An inserter apparatus has a printer A and an inserter apparatus B. The printer A has a print section, and an insert information output sectionfor outputting insert information including an insert page showing a position of an insert paper and an interval of printing papers. The inserter apparatus B has a discharged paper carrying sectionof printing papers from the print section; a counter sectionfor counting the number of sheets of the printing papers; a paper feeding sectionfor setting the insert paper therein; and a paper feeding controller. Based on insert information from the insert information output section, the paper feeding controllercontrols the insert paper to be fed at a timing before the next paper interval is passed after a count value of the counter sectionreaches one page before the insert page. Therefore, it is possible to realize an excellent short insert processing for the printing papers.

Inserter apparatus, printer, print system and insert method

When an original document is placed on the lift tray, a timer is reset and starts counting a predetermined time. Whether an alignment device is moved to adjust the original documents loaded on the lift tray in, for example, the widthwise direction transverse to the transportation direction is then determined. If a change in the detected width of the original documents is detected, the timer is reset and started again. If there is no change in the detected width of the original documents, a control waits for the timer to time out. If the timer reaches the predetermined time, the lift tray is driven up by the lift motor and rises until the top limit sensor turns on.

Original document reading device

An inserter apparatus has a printer A and an inserter apparatus B. The printer A has a print sectionand an insert information output sectionfor outputting insert information including an insert page showing a position of an insert paper and an interval of printing papers. The inserter apparatus B has a discharged paper carrying sectionof printing papers from the print sectiona counter sectionfor counting the number of sheets of the printing papers; a paper feeding sectionfor setting the insert paper therein; and a paper feeding controllerBased on insert information from the insert information output sectionthe paper feeding controllercontrols the insert paper to be fed at a timing before the next paper interval is passed after a count value of the counter sectionreaches one page before the insert page. Therefore, it is possible to realize an excellent short insert processing for the printing papers.

An image forming device includes an intermediate transfer member to which a toner image formed on an image bearing member is primarily transferred and which is able to simultaneously support a plurality of toner images, a secondary transfer member for secondarily transferring a toner image held on the intermediate transfer member to a sheet, a cleaning unit for removing the toner images from the intermediate transfer member after the secondary transfer, and a feeding member for feeding a sheet into the secondary transfer member. The secondary transfer member features a sheet-delay transfer mode in which a subsequent toner image on the intermediate transfer member is transferred if a previous toner image on the intermediate transfer member is out of sync with the timing at which the toner image is transferred to the fed sheet.

Image forming device having a sheet delay transfer mode

The ADFis a device for feeding an original document toward an original document scanning position R, comprising an original document loading unit, paper feeding roller, pressure sensorand lift plate drive unit. The original document loading unitcomprises a lift plateallowing an original document to be loaded and vertically movable in an original document loading direction. The paper feeding rolleris disposed above the lift platedisposed at the lowermost position with an interval therebetween, and is capable of moving upwardly in coordination with a force received from below from the lift plate. The pressure sensoris capable of detecting upward pressure on the paper feeding roller. The lift plate drive unitcauses the lift plateto be lowered upon detection of upward pressure on the paper feeding roller

Original document supply device for image forming device, and image forming device equipped with the same

When an original document is placed on the lift tray, a timer is reset and starts counting a predetermined time (S). Whether an alignment device is moved to adjust the original documents loaded on the lift tray in, for example, the widthwise direction transverse to the transportation direction is then determined (S). If a change in the detected width of the original documents is detected (Sreturns Yes), control returns to Sand the timer is reset and started again (S). If there is no change in the detected width of the original documents in S, control waits for the timer set in Sto time out (S). If the timer reaches the predetermined time set in S(Sreturns Yes), the lift tray is driven up by the lift motor (S) and rises until the top limit sensor turns on (S).

The invention provides a stackless continuous dual-sided copying method in photocopying machines. The method includes: a first step of finding as a circulatable sheet count the number of copy sheets that can stay in a circulating conveyance path when performing stackless continuous dual-sided copying; a second step of successively feeding sheets of copy paper wherein the number of the fed sheets is based on the circulatable sheet count if a copy sheet count remaining amount is greater than the circulatable sheet count, and successively convey-introducing the sheets of copy paper into the circulating conveyance path from a copy-sheet conveyance entry point for the circulating conveyance path; and a third step of resuming sheet-feeding operations at a predetermined timing after the last sheet of the copy sheets has finished passing the conveyance entry point in the circulating conveyance path, for starting a next continuous dual-sided copying cycle after copying to first sides of the copy sheets successively convey-introduced into the circulating conveyance path in the second step is completed. Accordingly, when carrying out stackless continuous dual-sided copying in accordance with the present invention, there is no need for copy sheet detection sensors to determine whether the number of copy sheets conveyed to the circulating conveyance path has reached the conveyable sheet count.

Stackless continuous dual-sided copying method in photocopiers

An image forming apparatus which forms identical images both on a sheet of a first type (overhead projector sheet) and on a sheet of a second type (normal paper sheet). One-side image formation is performed to form images on front sides of OHP sheets which are then discharged into a non-sort bin. Two-side image formation is performed to form images on the both sides of normal paper sheets which are then sorted and discharged into sort bins. Thus, sets of document sheets for presentation can be prepared in a sorted state. Since images are formed on both sides of the normal paper sheets, the normal sheets can be economized and saved.

Image forming apparatus for forming images on sheets of two types

An electrographic copying machine has a photoreceptor drum which moves so that a photosensitive layer on its surface is successively charged, exposed, developed and charge-removed. The photosensitive layer is made of an amorphous material. The drum surface is charged by a charger before a latent image is formed thereon through exposure. A voltage generator is provided which supplies the charger with a voltage to charge the drum surface. It takes time for the potential of the charged drum surface at the developing section to reach a predetermined potential from a potential higher than the predetermined potential due to a rise characteristic of the surface potential. A controller is provided which corrects an output voltage value of the voltage generator to a voltage value necessary for the drum surface to be charged at the predetermined potential in a predetermined number of charging operations performed until the surface potential reaches the predetermined potential.

Voltage control apparatus for controlling a charger in an image forming

An image forming apparatus with a sorter which is capable of performing image formation even during the implementation of a post-process. The image forming apparatus includes the sorter which has a non-sort bin and sort bins for receiving sheets each formed with an image, and a post-processor for performing the post-process on sheets received by the sort bins. When an interruption mode is designated during the post-process, the image formation is permitted while the post-process is continuously performed. Further, the sorter is controlled to discharge a sheet formed with an image into the non-sort bin. Thus, the image formation can be performed concurrently with post-process. Since the sheet formed with the image is discharged into the non-sort bin which is adapted not to receive sheets to be subjected to the post process, a jam will not occur even if an error occurs during the post-process.

Image forming apparatus with control means for coordinating image

In a copying processing performed several times from the depression of a copy button of a copying machine until the surface potential of the photoreceptor drum is stabilized, a voltage sufficiently high for correcting the rise characteristic of the photosensitive layer on the drum surface is applied to a charger. A main circuit having a controlling portion to realize this corrects the output voltage of the high-voltage generating circuit which applies a high voltage to the charger to a voltage value necessary for the drum surface to be charged at a stable potential level. The main circuit charges the drum surface at the stable potential level necessary for development from copying of the first sheet.

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Osaka, Japan

Hidehiro Tabuchi