JPS6177870A - Copying machine - Google Patents

Abstract

PURPOSE:To decrease considerably the man-hour and cost necessary for the change of control parameters, etc. by constituting a memory element of a rewritable non-volatile memory element and rewriting freely the control parameters in a diagnosis mode. CONSTITUTION:The operator sets the operation mode of a copying machine at the diagnosis mode and sets the code number corresponding to the kind of the control parameters by operating a control panel 5. The control parameter of the kind corresponding to the above-mentioned code number is read out among the plural kinds of the control parameters already stored in the non- volatile memory 7 and is displayed static after said parameter is flickered and displayed on a display device. When the fresh value of the control parameter is set, the fresh value of the control parameter is temporarily stored in a RAM3 and is displayed on the display device. The fresh value of the control parameter stored temporarily in the RAM3 is transferred to and stored in the original storage region in which the same kind of the control parameter is stored among the storage regions of the memory 7. The fresh control parameter is flickered and displayed on the display device and is then displayed static.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying machine that optically reads an image of a document and copies it onto recording paper.

[Conventional technology]

Conventionally, in this type of copying machine, all copying operations from reading an image of an original to ejecting a recording paper are controlled based on control parameters stored in a memory in advance.

For example, in order to detect a paper jam, the time required to transport recording paper for each predetermined transport section is stored as a control parameter for paper jam detection, and if the actual time required for transport exceeds the value of this control parameter. It is detected that a paper jam has occurred.

[Problem that the invention seeks to solve]

However, conventional copying machines use non-rewritable memory elements such as masks R and OM as memory elements for storing control parameters. Therefore, each time a design is changed or control parameters are reset, a new memory element must be prepared, which increases man-hours and costs associated with changing control parameters, which is extremely uneconomical. Ta.

[Means and effects for solving the problem] 5. The present invention provides a memory element that stores control parameters as an EFR.
Consists of rewritable non-volatile memory elements such as OM,
Furthermore, the storage area of this nonvolatile memory element is divided according to the type of control parameter, and the control parameter can be set to a desired value from the operation panel in the diagnosis mode for each storage area.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention, in which a read-only memory (ROM) 1 stores a program for controlling the operation of the entire copying machine, and this ROMIζ controls copying operations according to the stored program. a central processing unit (CPU) 2, a random access memory (RAM) 3 for temporary data storage, a sensor unit 4 for detecting paper jams, etc., an operation panel 5 for inputting and displaying the operation details of the copying machine; It is comprised of a recording paper feeding mechanism 6 and a rewritable nonvolatile memory 7 that stores control parameters for controlling copying operations.

In this configuration, the nonvolatile memory 7 is provided with storage areas divided according to the type of control parameter. Then, the storage contents of each of the divided storage areas, that is, the control parameters, are rewritten according to the procedure shown in the flowchart Iζ of FIG. 2.

That is, the operation mode of the copying machine is set to diagnostic mode by using the operation mode selection switch (not shown) on the operation panel 5, and the operation mode corresponding to the type of control parameter is set using the numeric keypad (not shown) on the operation panel 5. Set the code number. Then, among the plurality of types of control parameters already stored in the nonvolatile memory 7, the type of control parameter corresponding to the code number is read out. This control parameter is then displayed blinking on the display on the operation panel.

Therefore, when a clear key (not shown) on the operation panel 5 is operated, the blinking control parameters become statically displayed. In this state, new values of the control parameters are set using the ten keys on the operation panel 5. Then, the new value of the control parameter is temporarily stored in the RAM 3iζ and displayed on the display of the operation panel 5. Next, when the start button on the operation panel 5 is operated, the new value of the control parameter temporarily stored in the RAM 3 is transferred to the original storage area of the non-volatile memory 7 where the same type of control variable meter was stored. transferred and stored. As a result, the control parameters are rewritten to new values.

At this time, the new control parameters are blinking on the display. Therefore, when the stop button on the operation panel 5 is operated, the blinking display is stopped and becomes a static display.

By the above operations, the control parameters stored in the nonvolatile memory 7 are rewritten to desired values.

As described above, in this embodiment, since the control parameters can be freely rewritten, the number of man-hours and costs associated with changing the control parameters for detecting paper jams, etc., can be significantly reduced. Furthermore, since the operation switches on the operation panel 5 are also used as the operation switches necessary for rewriting the control parameters, there is no need to add new switches, which is also economical.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the control parameters used to control the copying machine can be freely rewritten in the diagnostic mode, which greatly reduces the man-hours and costs associated with changing the control parameters. In addition, it is extremely useful when determining optimal control parameters at the development stage.

[Brief explanation of the drawing]

FIG. 4 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flow chart for explaining the operation of the embodiment. 1...ROM, 2...-, CPU, 5...operation panel,
7...Nonvolatile memory.

Claims (1)

[Claims] In a copying machine that controls a copying operation based on control parameters stored in a memory, the memory is configured with a rewritable nonvolatile memory, and the storage area of the nonvolatile memory is divided according to the type of control parameter. , a copying machine configured such that control parameters of desired values can be set for each of these storage areas from an operation panel in a diagnostic mode.