KR930008540A - Paper size recognition device and method - Google Patents

Abstract

The present invention relates to an apparatus and method for recognizing the size of paper fed to an office equipment such as a copying machine, and more particularly, to copying paper from paper sheets fed without using a plurality of sensors installed in a manual feeding table or paper cassette. The present invention relates to an apparatus and a method for recognizing the size of a.

The present invention recognizes the size of paper even when using the manual feeder as well as the paper cassette stage, thereby operating the optical system according to the paper size from the first sheet to be fed, thereby reducing power consumption and without using a cassette detection sensor. Recognizing and processing the size of the paper can reduce the cost. In particular, it can have a superior performance improvement compared to the system that recognizes the paper size from the first sheet to the next sheet.

Description

Paper size recognition device and method

Since this is an open matter, no full text was included.

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.

Claims (4)

In the apparatus for automatically recognizing the size of paper fed to an office equipment such as a copying machine, a key data interface means 11 for interfacing a signal to and from an operation panel, and a resist roller 7 are provided at the front end to make continuous copying. A resist sensor means (6) for sensing the length of the sheet to be fed at the first time, and a CPU and connected to the key data interface portion (11) and the resist sensor means (6) and the key data interface portion (11). A central control unit 12 for receiving a user command signal and a sheet sensing signal output from the sensors 6 and 19 as inputs and controlling driving of the paper feed roller 2, the resist roller 7 and the optical system of the copier; A feed roller driving means 7 connected to the central control means 12 to drive the paper feed roller 2 according to the control signal of the central control means 12, and connected to the central control means 12; And control program Gram-embedded memory means 18 and input / output interface means 13 connected to the parallel communication terminal of the central control unit 12, and the control signal of the central control means 12 connected to the input / output interface means 13; And a resist roller drive means (15) for driving the resist roller (7) by means of the paper size. A key data interface means 11, a resist sensor means 6, a central control means 12 connected to the key data interface portion 11 and the resist sensor means 6, and the central control means 12 The feed roller driving means 7 connected to the feeding roller driving means, the feeding roller driving means 7 connected to the central control means 12, the memory means 18 connected to the central control means 12, and In the method for recognizing the paper size applied to the paper size recognition device consisting of the input and output interface means 13 connected to the central control unit 12, and the resist roller drive means 15 connected to the input and output interface means 13 And a first step (21 to 29) of setting a paper feed stage, 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 after performing the first step. When the copy start signal is input, A second step (30 to 36) for counting the count value according to the operation time of the test sensor (6), the count value counted in the second step (30 to 36) and the reference value stored in the memory means (18). By comparing the value of the paper loaded with the third step (37) and the third step (37) after performing the third step (37), during the copy operation, the count value of the size of the paper from which the sal was recognized from the first page and the coefficient of the exposure lamp. Fourth steps (38 to 47) and the fourth steps (38 to 47) for controlling the operation of the paper feed roller (2), the resist roller (7), and the optical system after turning off the exposure lamp when the values match. After the copying operation is completed, the copying process is erased, the count value for the operation of the resist sensor is erased, the recognition value of the paper size is reset to the maximum standard, and the copying operation is terminated. Paper size recognition method characterized in that. The method according to claim 2, wherein the fourth steps 38 to 47 determine whether the count value of the exposure lamp and the value of the paper size match when the reset sensor 6 reset flag is turned on and the paper size recognition flag is turned on. Steps 38 to 44, if not matched, return 45 and turn off the exposure lamp flag if matched, and calculate the scanner travel distance, erasure on time, and operation time of the feed roller to match the transplanted paper size value. The method of recognizing the paper size, characterized in that carried out by the control step (46, 47). ※ Note: This is to be disclosed by the original application.