Canon Kabushiki Kaisha

Canon Aptex

Akimaro Yoshida

Masakazu Hiroi

Takeshi Honjo

Tomohito Nakagawa

Yoshinori Isobe

Chikara Sato

Masataka Naito

Noriyoshi Ueda

Hitoshi Fujimoto

Yuji Takahashi

Kenji Kobayashi

Katsuaki Hirai

Satoshi Kaneko

Takayuki Fujii

Norifumi Miyake

Tadayuki Kitajima

Tokuharu Kaneko

Satoshi Choho

Yuji Morishige

Katsuya Yamazaki

Shinichi Nakamura

Hiroyoshi Yoshida

Shokyo Koh

Makoto Kitahara

Hideki Adachi

Wataru Kawata

Yasuo Fukazu

Yoshio Mizuno

Hideaki Furukawa

Toshiya Kanazawa

Yuzoh Matsumoto

Shuichi Yabe

Yasuhide Hishikawa

Takami Saeki

Image processing apparatus and method

The present invention provides a sheet original conveying apparatus having an original reverse apparatus and in which originals stacked on a tray are separated one by one by a separation means and a separated original is supplied to a reading portion for reading an image. It comprises a first convey path provided at a downstream side of the separation means in a supplying direction to direct the supplied original to the reading portion, a second convey path branched from the first convey path to direct the supplied original to the reading portion after a travelling direction of the original is reversed in a travel reverse portion, and a switching means disposed at a branched area between the first and second convey paths to switch the first and second convey paths from one to the other.

Sheet original conveying apparatus having original travel reverse

The present invention provides an original conveying apparatus in which originals stacked on an original tray are separated one by one by a separation unit to be conveyed to a reading portion for reading an image, and then the read original is discharged. An original travel direction reverse path is disposed between the separation unit and the reading portion, a face turn-over path is provided for turning over the original discharged from the reading portion and for directing it to the reading portion again, and there is a control unit for continuously effecting, for the respective original, a first image reading mode in which the travel direction of the original is reversed in the original travel direction reverse path without turning over the front and rear faces of the original before the original is conveyed to the reading portion and then the image is read, and a second image reading mode in which the original is turned over in the original travel direction reverse path after the first image of the original was read at the reading portion.

Sheet original conveying apparatus for duplex copying

An image forming apparatus including a status detecting unit for detecting a status of each portion of the apparatus, a driving unit for driving each portion of the apparatus, an input unit having an input data storing unit for storing input data detected by the status detecting unit, an output unit having an output data storing unit for storing data to be output for driving the driving unit, a controlling unit connected to the input data storing unit and the output data storing unit for controlling the whole image forming operation of the apparatus including a control of the driving unit, in accordance with a status detected with the status detecting unit or a predetermined rule, a network for transferring data between the controlling unit and a plurality of the input or output units, and a timing control unit for controlling the timing of data transfer over the network, wherein the timing control unit includes a plurality of timing control modes and selects one of the timing control modes in accordance with an instruction from the controlling unit. The plurality of timing control modes of the timing control unit includes a first timing mode of performing data transfer in accordance with a timing generated by the controlling unit and a second timing mode of performing data transfer independently from the timing generated by the controlling unit. The second timing mode is a mode of performing data transfer at a predetermined time interval.

Control system for communications between driving units and control units

An image forming apparatus includes a feeding unit for sequentially feeding a plurality of originals to an exposure plate, an exposure unit, which is movable along the exposure plate, for exposing the original on the exposure plate, an image forming unit for forming on a sheet an image on the original that is exposed by the exposure unit, and a control unit for providing either a first copying operation, in which the original is shifted by the feeding unit while the exposure unit is halted to perform copying, or a second copying operation, in which the exposure unit is shifted while the originals that are fed by the feeding unit are halted on the exposure plate. When the control unit executes a first mode in (e.g. copies&gt;1) which the second copying operation is performed following the first copying operation, the feeding unit feeds the originals while maintaining a first constant distance between a leading end of a preceding original and a leading end of a succeeding original, and wherein, when the control unit executes a second mode (e.g. copies=1) in which only the first copying operation is performed, the feeding unit feeds the originals while maintaining a second constant distance between a trailing end of a preceding original and a leading end of a succeeding original.

Image forming apparatus for copying a document by moving an exposure

A sheet size detecting apparatus includes a rotary member for conveying a sheet rotation detector together with the rotary member for generating a pulse, a sheet size measurement control device including an arm provided in a vicinity of the rotary member to effect reciprocally rocking by the passing of the front end and the rear end of the sheet. The sheet size measurement control device measures the size of the sheet by counting pulses generated by the rotation detector means in response to the rocking of the arm and, adds a correction value to the measured sheet size according to the conveying speed of the sheet.

Sheet size detecting apparatus responsive to a conveying speed of the

The present invention provides an original feeding apparatus comprising first original feeding means for directing an original to an original reading station from one side thereof in an original-stationary scanning mode in which the original is read while fixing the original at the original reading station, and second original feeding means for directing then original to the original reading station from the other side thereof in an original-through scanning mode in which the original is read while shifting the original along the original reading station.

Original feeding apparatus with rotary conveyor that releases original

A reading apparatus includes an image reader for reading a sheet original positioned at a reading position and an automatic original conveyor for supplying the sheet original onto the reading position, wherein the sheet original can be read through an image flow reading mode while the sheet original is being conveyed by the automatic original conveyor by fixing the image reader at any position. The apparatus also has a convey path for directing the sheet original to the reading position, and a controller for initiating conveyance of the sheet original waiting at a predetermined position in the convey path in response to a flow reading mode start signal during the image flow reading mode and for initiating the image flow reading mode by outputting an image tip signal when a tip end of the sheet original reaches a flow reading image tip position.

Reading apparatus in which image reading means may be fixed to read and

The present invention provides an original convey apparatus with an original tray on which originals are rested, a conveyor for conveying the original on the original tray, a last original detector for detecting the fact that all of the originals on the original tray are conveyed, and original size information detector. Wherein an original detector position for the last original detection is changed on the basis of original size information.

Original convey apparatus with last original detection sensor

The present invention provides a sheet original supply apparatus including a conveyor for conveying a sheet original at a reading portion, and a supply device arranged upstream of the conveyor and adapted to send the sheet original to the conveyor, wherein after the sheet original starts to be conveyed by the conveyor and before the sheet original is read at the reading portion, the restraint of the sheet original by the supply device is released.

Sheet original supply apparatus and image forming apparatus with it

An original transporting device for transporting an original to an exposure unit of a copying machine which includes a loading tray for loading the originals, a first separation unit, a first transporting unit, a second separation unit, a second transporting unit, a third transporting unit for transporting the original transported by the first transporting unit in a first direction, stopping it at the exposure unit, then transporting it in a second direction and transporting the original transported by the second transporting unit in the second direction to pass through the exposure unit. Finally, an ejection system is included for ejecting the original transported by the third transporting unit from the exposure unit in the second direction on to the loading tray, where the transporting speed of the second transporting unit is higher than the transporting speed of the third transporting unit in the second direction, where the original interval between the previous original and the current original can be rendered closer to accord the maximum ability of the copying machine so that the maximum productivity can be attained.

Original transporting device capable of effecting exposure while

The present invention provides an image forming system having an original-stationary scanning mode and an original-through scanning mode characterized by control means for more shortening a sheet supply distance in the original-through scanning more than that in the original-stationary scanning mode.

Image forming system with original feeding apparatus

An image forming apparatus is capable of reproducing a read image in combination with a format, without reading a format sheet every time. The format information is read from an external detachable memory, and is combined in the apparatus with the data read by an image reader.

Image forming apparatus in which images are stored in an external memory

In a system made up of a plurality of devices such as a copier, an RDF, and a sorter, there is provided in each device a communication control device for providing communication between devices such that communication between devices can be performed independently of the device control unit inherent to that device. The communication control device includes data storage for storing device control data which can be accessed at random by a device control unit, access storage for storing access data indicating that the data storage is accessed, and a communication device for transmitting and receiving data stored in data storage. A synchronization storage device sets synchronization data indicating that the device control unit has set all the data to be transmitted in the data storage and synchronizes the device control unit and each communication control device on the basis of the synchronization data. Each communication control device further includes a protocol control device for controlling the communication device and the data storage such that any data stored in the data storage is read out and is transmitted and such that the data received by the communication device is stored at a predetermined in data storage means. In addition, the protocol control device controls the access storage device and the synchronization storage device.

Communication control device for controlling the flow of data between a

The present invention provides an automatic original feeding apparatus comprising first rotary supply means for supplying a sheet original, second rotary supply means disposed at a downstream side of the first supply means to supply the sheet original, control means for rotating the second rotary supply means reversely to return the sheet original toward an upstream side by a small amount, retract means for directing a trailing end of the returned sheet original out of a sheet path connecting between the first and second rotary supply means, controlling means for controlling the first rotary supply means to cause the first rotary supply means to feed a next sheet original until a leading end of the next sheet original is overlapped with the trailing end of the first sheet original, information means for the kind of sheet originals, and means for changing a return amount of the sheet original effected by the controlling means, in accordance with the kind of the sheet original from the information means.

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Yokohama, Japan

Akimaro Yoshida