JPH02223963A - Copy controller - Google Patents

Abstract

PURPOSE:To use all communication ports in a control board at the time of data transfer by providing a copying controller with a serial communication controller which exchanges data with the controlled parts of a copying machine and also transfers data in a nonvolatile memory between the control board. CONSTITUTION:The control board is provided with a master CPU 301 and a slave CPU 302, which communicate with each other by means of a dual port RAM 303 a control copying. The serial communication controller has an interruption controller 310, an operation part controller 311, etc., which are connected with each control part by an optical fiber. A backup circuit is added to a RAM 305, and machine history concerning data required for copying, the number of fed papers, energization time, etc., is stored in the RAM 305 and remains even when a main switch is truned off. Thus, data in the nonvolatile memory can be maintained without adding a new communication port even when the control board is replaced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copy control device, and more particularly to a copy control device characterized by a data transfer device.

[Conventional technology]

Generally, in a copying machine, a control board is provided with a nonvolatile memory capable of storing data necessary for copying operations, such as various initial setting values, data that changes over time, the number of sheets fed, and operating time.

When replacing the control board, the data in the nonvolatile memory of the old board is transferred to the new board for use.

[Problem to be solved by the invention]

Conventionally, when performing data transfer as described above, a new communication port for data transfer was provided.

Therefore, there was a problem that the cost increased.

The present invention eliminates the drawbacks of the prior art described above, transfers data by using communication ports used during copying operations, and also enables all communication ports in the control board to be used during data transfer, thereby improving reliability. The purpose is to improve

[Means for solving problems]

In order to achieve this object, the present invention provides a copying control device having a nonvolatile memory capable of storing initial setting values, data that changes over time, and data such as the number of fed sheets and operation time necessary for copying operations. The present invention is characterized in that it includes a serial communication controller that sends and receives data to and from a controlled unit of the copying machine, and also transfers data in the non-volatile memory between the control boards. The input/output line of the communication controller is connected to the controlled part of the copier using a removable connector, and when data is transferred, the connectors of the old and new control boards are connected, and the data is transferred via the serial communication controller of the split-a board. Give and receive.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram of a copying machine according to the present invention, which includes a copying machine main body A and a circulating document feeder (hereinafter referred to as RDF) B. The copying operation when using these will be explained.

The copying operation is started by setting the necessary copying format on the operation section provided on the copying machine main body A and pressing the start button. Here, a copying operation using RDF will be explained. The RDF has a document tray 201, and the document placed there is fed by a document feed belt 202, passes through a document conveyance path 203, and passes through a contact glass 1.
01. So the manuscript was flash lamp 1
02, the entire surface is irradiated with light. The power source 103 of the flash lamp is charged in advance by a control device, which will be described later, and emits light at a predetermined timing.

The reflected light from the original passes through the first mirror 104, the through lens 105, and the second mirror 106 to expose the belt photoreceptor 107. The belt photoreceptor 107 is uniformly charged with a charge by the charger 10B, and forms an electrostatic latent image by exposure. The electrostatic latent image on the belt photoreceptor 107 is erased by the eraser 1
09 removes the charge on the unnecessary portion, develops it in a developing device 110, and sends it to the transfer section. Then, the developed original image is transferred onto a transfer paper by a transfer charger 111. This transfer paper is stored in paper feed trays 112, 113, and 114.
The paper is fed from one of the above, passes through a conveyance path 115, and is sent to a transfer unit by registration rollers 116 in time with the original image. The transfer paper on which the image has been formed passes through a conveyor belt 117, is fixed by a fixing device 118, and is conveyed to a discharge tray 119.

The document on the contact glass 101 is transferred to the document conveyor belt 2.
04, the document is sent out after the light irradiation is completed, and returned to the document tray 201 by the document discharge roller 206. The document ejection roller 206 can rotate forward and backward, and if you want the front and back sides of the document to be the same as the original state, the trailing edge of the document will be rotated by the document switching claw 20.
5, the document discharge roller 206 is reversed and the document is discharged through the forward conveyance path 207. If the document is desired to be reversed, the document discharge roller 206 is driven as it is, and the document is discharged through the reverse conveyance path 208.

FIG. 1 is a system block diagram of a copy control apparatus according to the present invention, and the configuration thereof will be explained below.

The control board 300 described later includes two CPUs 301 and 302.
, and communicate with each other through a dual port RAM 303 to control copying. The mask CPU 301 includes a ROM
304, RAM 305, input port 306, output port 307, RAM 305, timer 309, and serial communication controller. The serial communication controller includes an interrupt controller 310, an operation unit control controller 3I11, a paper feed control controller 312, a DF control controller 313, and a sorter control controller 31.
4, which are connected to each control section by optical fibers. A backup circuit is added to the RAM 305, and the data necessary for copying operations and machine history such as the number of sheets passed and the time of energization are stored, and are retained even when the main switch is turned off.

FIG. 3 shows an example of a backup circuit for the RAM 305. Usually a Zener diode ZD and a transistor TR,
Capacitor C is charged by TR, but is backed up by battery B when the main switch is turned off. R is a resistor and D is a diode.

Next is the slave CPU 302, but this CPU 302
is for sequence control, ROM315°RAM316.
Input boat 317. Output port 318, interrupt control O-
La 319. Tie v320°321 and AD converter 32
It has 2.

The contents stored in the nonvolatile memory (RAM 305, 316) include initial setting values such as erase adjustment values and resist adjustment values, light intensity adjustment values that change over time, and charge amount adjustment values, as well as logging data. As the number of sheets passed,
These include the number of misfeeds, energization time, motor drive time, etc. These data are useful for knowing the condition of machines and reducing maintenance time. Therefore, it is desirable that data continue even if the board is replaced due to failure.

To do this, a boat for data communication is required,
As mentioned above, installing a new one will increase the cost.

In the present invention, since the control board 300 shown in FIG. 4 has various serial communication controllers shown in FIG. 1 for copying operation control, by utilizing the various serial communication controllers,
To transfer data in nonvolatile memory between control boards without providing a new communication port. Moreover, the control board 3
By making it possible to use all the serial communication controllers on the 00, it becomes possible to improve the reliability of data transfer when replacing boards.

Specifically, as shown in FIG. 4, the input/output line of the serial communication controller of the control board 300 is connected to the controlled part of the copying machine with a detachable connector 323, and when data is transferred, Connectors 323 and 324 are connected to exchange data via the serial communication controller of the control board.

〔Effect of the invention〕

As described above, according to the present invention, even when the control board is replaced, data in the nonvolatile memory can be continued without providing a new communication port.

[Brief explanation of the drawing]

FIG. 1 is a system block diagram of the entire copying control device according to an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a copying machine, and FIG.
The figure is a circuit diagram showing an example of memory backup, and FIG. 4 is a control board connection structure diagram. 305.316...RAM, 310,311,312
．． 313.314...Various serial communication controllers.

Claims (1)

[Claims] In a copy control device that has a nonvolatile memory that can store initial settings, data that changes over time, and data such as the number of sheets fed and operating time required for copying operations, data exchange with the controlled parts of the copying machine is performed. A copy control device characterized by comprising a serial communication controller that performs sending and receiving as well as data transfer in a nonvolatile memory between control boards.