摘要:
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.
摘要:
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.
摘要:
An image processing apparatus is controlled in accordance with the status of an interface and the contents of data. Specifically, so long as the number J of jobs, which are executed by the copier system at the same time, and the number N of channels, which are required by a target job during one cycle, are obtained, dynamic paper feeding timing Wd can be acquired from ideal paper feeding timing Ws, while taking delay time X into account. The preceding paper feeding is performed using paper feeding timing Wd. Further, based on predicted data, a check is performed to determine whether image transmission will be successful without a buffer memory being used. When it is determined that the buffer memory is not required for the image transmission, image data are received without the buffer memory being obtained. When it is determined that the buffer memory is required for the image transmission, an adequate buffer memory is acquired for the reception of image data. In addition, a check is performed to determine whether the height of an obtained bandwidth is satisfactory. When it is determined that the height of the bandwidth is satisfactory, a printer engine is so controlled that it performs printing at the maximum process speed (minimum paper interval).
摘要:
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.
摘要:
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.
摘要:
A sheet original feeding apparatus comprises a sheet original stacking tray on which sheet originals to be treated are stacked as an original stack. A sheet original separator separates and supplies the sheet original one by one from the bottom of the original stack stacked on the sheet original stacking tray. A sheet original feeding path is provided for directing the sheet original separated by the sheet original separator. A sheet original feeder feeds in a forward direction the sheet original directed by the original feeding path to an image reading portion. The sheet original feeding means is also operable in a reverse direction, and the sheet original feeding path is arranged at one side of the sheet original feeder. A first sheet original ejecting path is further provided for returning the sheet original fed in the reverse direction by the sheet original feeder to the sheet original stacking tray from a same side of the sheet original feeder as the sheet original feeding path. A second sheet original ejecting path returns the sheet original fed in the forward direction by the sheet original feeder to the sheet original stacking tray. The second sheet original ejection path is arranged at a side opposite to the sheet original feeder means as the sheet original feeding path.
摘要:
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.
摘要:
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>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.
摘要:
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.
摘要:
An original handling apparatus includes a sheet cassette for storing a bundle of originals, an RDF for feeding each bundle of originals stored in the sheet cassette to an exposure position, discharging the exposed original from the exposure position, and circulating the exposed original to the sheet cassette, an operation panel for setting a desired number of circulation cycles of the bundle of originals stored in the sheet cassette, and a microcomputer (including a CPU) for controlling the RDF to allow it to start a next circulation cycle prior to an end of a current circulation cycle in a plurality of circulation cycles.