KR940003110B1 - Recognition apparatus and mehtod of a paper size - Google Patents

Abstract

The device includes a key data interface means (11) which interfaces signals to an operation panel, a register sensor means (6) which senses the size of paper, a paper distributing sensor means (19) which senses the distributed paper, a central control means (12) which control the driving of a paper feeding roller (2), a register roller (7) and an optic system according to the user command signal and paper sensing signal, a paper feeding roller driving means (6) which drives the paper feeding roller (2) by the control signal of the central control means (12), a memory means (18) which includes data and control program, an input-output interface means (13) and a register driving means (15).

Description

Paper size recognition device and method

1 is a schematic configuration diagram of a paper feeding unit and a transfer unit of a copying machine according to the present invention.

2 is a block diagram of a paper size recognition apparatus according to the present invention.

3 is an operation timing diagram.

4 is an overall flowchart of a method for recognizing a paper size according to the present invention.

* Explanation of symbols for main parts of the drawings

11: key data interface unit 12: central control unit

13 input / output interface 14,17 buffer

15: resist roller drive unit 16: paper feed roller drive unit

18: memory unit 19: discharge sensor

The present invention relates to an apparatus and method for recognizing the size of paper fed to an office equipment such as a copier, and more particularly, to recognize the size of paper without using a plurality of sensors installed in a manual feed table or a paper cassette during continuous copying. An apparatus and method that can be used.

In the conventional copier system, the size of the paper to be fed is recognized by the paper cassette recognition sensor and the operating panel, and when the recognition data value is determined, the operating distance of the optical system is calculated, and the system moves by a considerable amount. Let drive. However, cost recognition has been a factor in the processing of molds, recognition sensors, switches, interconnects and mechanical parts.

In addition, when using manual feeding, the optical scanner always moves the maximum distance regardless of the paper size fed, and the halogen lamp stays on for the duration of the maximum distance, increasing power consumption and extending the life of the lamp. There was a problem to shorten. In addition, the longer the copying time, the longer the movement of the optical device caused inconvenience to use.

Accordingly, the present invention has been made to solve the problems of the prior art as an apparatus capable of automatically recognizing and processing the size of the paper to be fed without using paper cassette detection sensors or paper size designation switch on the operation panel and the like; The purpose is to provide a method.

In order to achieve the above object, the present invention provides a key data interface means for interfacing a signal to and from an operating panel, a resist sensor means installed at the front end of the resist roller to sense the length of the paper initially fed during continuous copying; A discharge sensor means for detecting a sheet disposed on the rear end of the fixing unit of the copier, and a CPU and connected to the key data interface unit, the resist sensor unit, and the discharge sensor unit from the key data interface unit sensors. A central control means for controlling the operation of the feed roller, the resist roller, and the optical system of the copier by receiving the output user command signal and the paper detection signal as inputs, and connected to the central control means to supply paper according to the control signal of the central control means; A feed roller driving means for driving a roller, and connected to said central control means. Register means for storing data and control programs, an input / output interface means connected to a parallel communication terminal of the central control unit, and a resist roller connected to the input / output interface means to drive a resist roller by a control signal of the central control means. A paper size recognition device composed of a driving means and a paper size recognition device applied to the paper size recognition device, and set the paper feed stage, the copy operation mode according to the number of sets, and the maximum size of the first sheet of paper to be fed according to the state of the copier. And a second step of counting the count value according to the operation time of the resist sensor as the copy start signal is input after the first step is performed, and the count value and the memory means counted in the second step. A third step of recognizing the size of the loaded paper by comparing the stored reference values, and performing the third step And a fourth step of removing the operations of the paper feed roller, the resist roller, and the optical system to match the size of the newly recognized paper during the continuous copy operation, and the operation of the resist sensor after the continuous copying is performed after performing the fourth step. It is characterized in that the paper size recognition method is performed by the processing procedure of the fifth step of erasing the count value, resets the recognition value of the paper size to the maximum standard and terminates the copying operation.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a paper feeder and a transfer unit of a copier according to the present invention, in which 1 is a pick-up roller, 2 is a feed roller, 3 is a separation pad, 4 is an upper guide, and 5 is a lower guide. 6 denotes a resist sensor, 7 a resist roller, and 8 a drum.

When the paper is set by the manual feed table or the paper cassette, it is selected by the selection roller (1). The selected paper is turned over to the feeding roller (2) to separate the separation pad (3) and the upper and lower guides (4, 5). Each sheet is separated one by one to reach the resist roller 7, and at this point, the resist sensor 6 starts to be sensed. Here, the conventional function of the resist sensor 6 is a function of checking a paper jam (JAM), and in the present invention, the paper length detection function is added to the conventional paper jam (JAM) function.

From the time at which the paper is detected to the time at which it is finished, the time is counted by the electronic control apparatus to which the present invention is applied, and the size thereof is recognized so that the size of the paper to be fed can be known. Therefore, when copying the first sheet, the optical system moves the maximum distance, but from the next sheet, the optical system moves by the movement distance that matches the recognized size. Detailed description will be described with reference to FIG. 2 below.

2 is a block diagram of a paper size recognition apparatus according to the present invention, in which 11 is a key data interface unit, 12 is a central control unit, 13 is an input / output interface unit, 14 and 17 is a buffer, 15 is a resist roller driving unit, and 16 Is a paper feed roller drive unit, 18 is a memory unit, and 19 is a discharge sensor.

As shown in the figure, the control device is installed at the front end of the resist roller 7 and the key data interface unit 11 for interfacing signals to and from the operation panel, and detects the length of the paper initially fed during continuous copying. A resistive sensor (6), a discharge sensor (19) installed at a rear end of the fixing unit of the copier, for detecting paper discharged, a CPU, and the key data interface unit (11), the resist sensor (6), and It is connected to the discharge sensor 19, and receives the user command signal and the paper detection signal output from the key data interface unit 11 and the center (6, 9) as input, the paper feed roller (2), the resist roller of the copier (7) and the central control unit 12 for controlling the driving of the optical system, and the paper feed roller driver 16 connected to the central control unit 12 to drive the paper feed roller 2 according to the control signal of the central control unit 12. ) And the central agent A memory unit 18 connected to the unit 12 to embed data and a control program, an input / output interface 13 connected to a parallel communication terminal of the central control unit 12, and the input / output interface unit 3; It is composed of a resist roller drive unit 15 connected to drive the resist roller 7 by the control signal of the central control unit 12.

Referring to the operation of the paper size recognizing apparatus configured as described above, when the continuous copy operation signal is input from the operation panel through the key data input / output interface unit 11, the central controller 12 operates the resist sensor 6 to feed the paper. Allows you to detect the length of the first sheet of paper. Then, the detection time of the resist sensor is counted and compared with the reference values previously stored in the memory unit 18 to determine the size of the paper.

The central control unit 12 that detects the size of the paper to be continuously fed outputs a control signal to the optical cradle driving device so that the optical system suitable for the paper size is driven. The reason for checking the operation signal of the discharge sensor 19 for detecting the discharged paper is to adjust the operation time of the paper feed roller 2 as the paper is discharged.

Meanwhile, since the components constituting the present invention, namely, the key data interface unit 11, the input / output interface unit 13, the resist roller driver 15, and the paper feed roller driver 16 are well-known technologies, the detailed description will be made. It will be omitted.

An operation timing diagram is shown in FIG. 3 to clarify the relationship between the operation procedures related to the operation according to the present invention.

4 is a flowchart showing the entire process of the paper size recognition method according to the present invention, which is performed by the control software mounted on the central control unit 12.

It is determined whether the state of the copier is in the standby mode (21), and if it is not in the standby mode, it is returned. If there is no paper, it displays on the operation panel that there is no paper (23), and if there is a paper, it is determined whether the paper feed source is the manual feed end or the cassette feed end is determined (24). As a result of the determination, it is determined whether the number of sets of sheets is two (26). If the determination is not made, the paper feed stage is determined, and then the number of sets is determined. If the number of sheets of paper set is less than two sheets, operation is performed in single copy (27), and if two or more sheets are set, the continuous copy is set (28) and the initial standard is set (29). Here, the initial standard of the paper is the maximum standard, and since the specification of the paper to be loaded is unknown for the first definition of the paper to be loaded, it is for scanning the optical system to the maximum standard (usually based on the A3 standard).

Then, it is determined whether the copy start signal is input (30), and if not, it returns and if it is input, resets the count value of the resist sensor 6 (31), turns on the main motor and the resist roller 7 (32). ), The count value is increased in accordance with the increased drum pulse (31). Then, it is determined whether the resist sensor 6 is in an ON state (34), and if it is returned and is in an ON state, it is determined whether a detection signal is output from the resist sensor 6 (35). As a result of the determination, the output of the resist sensor 6 is incremented with time, and the count value is input (36).

When the count value of the paper initially fed is input, the reference values previously stored in the memory unit 18 and the first counted values of the resist sensor 6 are compared to select a reference value equal to the count value as a result of the comparison. The size of the paper set to the size of the paper corresponding to the value is recognized (37).

Determine whether the specified number of copies is an operation mode for copying two or more copies, that is, a mode in which continuous copying is to be performed (38). If the continuous copying mode is not specified, the copying operation is terminated (39). The size value of the printed paper is replaced with the cassette data of an arbitrary paper source (40).

Then, as the continuous copy start signal is input (41), the moving distance of the optical scanner is calculated, the operation time of the drum eraser (ERASER) is calculated, and whether or not the split copy is possible (42), and then by the feed end The feed roller 2 corrects the operation time according to the determined paper feed stage, sets 43, and proceeds with copying to determine whether the number of copies specified and the number of copies completed are the same (44). Stop (50) turn off the main motor (51) and return.

However, if the number of copies designated and the number of copies completed are not the same, 1 is subtracted from the number of copies specified and the number of copies and the number of copies completed are set (45, 46, 47). If the remaining paper is determined (48), if it remains, the process shifts to the above (44), and if not, the paper cassette conversion values are all cooled down (49) and then set to the initial standard (50), which is the same as the above (28). The procedure is. The copy operation is interrupted (51), and the main motor is turned off and returned.

Therefore, the present invention configured and operated as described above operates the optical system according to the paper size from the first time after the paper feed is recognized by recognizing the size of paper even when using the manual feeding stage as well as the paper cassette stage, thereby reducing power consumption. In addition, since the size of the paper is recognized and processed without using the cassette detection sensor, the cost can be reduced.

Claims (2)

A device for automatically recognizing the size of paper fed to an office equipment such as a copying machine, comprising: key data interface means (11) for interfacing a signal to and from an operation panel and a front end of a resist roller (7) for continuous copying The key data interface unit comprising a resist sensor means (6) for sensing the length of the paper to be fed at the first time, a discharge sensor means (19) installed at the rear end of the fixing unit of the copier, and detecting the discharged paper; (11) connected to the resist sensor means (6) and the discharge sensor means (19) to receive a user command signal and a paper detection signal output from the key data interface (11) and the sensors (6, 19). A central control means 12 for controlling the driving of the paper feed roller 2, the resist roller 7 and the optical system of the copier, and connected to the central control means 12 to control the central control means 12; God Of the feed roller driving means 7 for driving the feed roller 2 according to the arc, the memory means 18 connected to the central control means 12 to embed data and a control program, and the central control part 12. Input / output interface means (13) connected to the parallel communication terminal, and resist roller driving means (15) connected to the input / output interface means (13) to drive the resist roller (7) by the control signal of the central control means (12). Paper size recognition device, characterized in that consisting of. The key data interface unit 11, the resist sensor means 6, the discharge sensor means 19, the key data interface unit 11, the resist sensor means 6, and the discharge sensor means 19 A central control means (12) connected to the paper feed roller drive means (7) connected to the central control means (12), a memory means (18) connected to the central control means (12), and the central control unit In the method for recognizing a paper size is applied to a paper size recognition device consisting of the input and output interface means 13 connected to (12), and the resist roller driving means 15 connected to the input and output interface means (13), A first step (21 to 29) of setting a paper feed source, a copy operation mode according to the number of sets, a set of the first sheet of paper to be set to a maximum standard according to the state of the copier, and copying after performing the first step. As the start signal is input, Comparing the second step (30 to 36) for counting the count value according to the operation time of (6) with the count value counted in the second step (30 to 36) and the reference value stored in the memory means 18 After the third step 37 for recognizing the size of the paper loaded, and after performing the second step 37, the paper feed roller 2 and the resist roller (to match the size of the newly recognized paper in the continuous copying operation) 7) And after performing the fourth step (38 to 43) for controlling the operation of the optical system, and the fourth step (38 to 43), and after continuous copying, the count value for the operation of the resist sensor is erased, and the paper And a process of the fifth step (44 to 52) of terminating the copying operation after resetting the recognition value of the size to the maximum standard.