KR20000014937A - Method of printing on both sides of the paper of complex printer - Google Patents

Abstract

PURPOSE: A method of printing on both sides of the paper of a complex printer is provided to perform accurate both sides printing by printing the data of even number pages only when marks for recognition are sequentially connected. CONSTITUTION: The method comprises the steps of:data indicating to sequentially indicate marks for recognition making recognition of pages possible on the frontal surface of printing papers to be printed with the data of odd number pages among printing data and to print all odd number pages among the printing data if the both sides printing is detected; page confirming to confirm the first page by comparing the marks for recognition to the data previously stored in a storing piece by detecting the marks for recognition indicated on the certain front part of the first printing paper if all the data of the odd number pages are printed, the printing papers are supplied secondly, and the first printing paper is supplied; and printing all data of the even number pages.

Description

Duplex printing method of multifunction device and its device

The present invention relates to a double-sided printing method and apparatus of the multifunction printer, and more particularly, to display a recognition mark capable of recognizing a page sequentially on a predetermined portion in front of the printing paper on which odd-numbered data is printed during double-sided printing, When printing data on even pages, which is the opposite side, both sides of the MFP detect the recognition mark displayed on the front side of the printing paper, and perform printing when the data of the odd pages to be printed on both sides of one sheet of paper matches the data of the even pages. A printing method and an apparatus thereof.

In general, when duplex printing using the printer function of the all-in-one, the all-in-one stores the print data transmitted from the computer in the memory, and the odd-page data (ie, 1, 3, 5, 7, 9, etc.) of the stored print data. ) And print it out.

Then, when the user resets the ejected printing paper into the cassette, the multifunction apparatus prints the even-numbered data (that is, 2, 4, 6, 8, etc.) on the opposite side of the set printing paper to perform duplex printing.

However, the duplex printing of the multifunction printer has a problem in that duplex printing is not performed properly when two or more sheets are fed while the printing paper is overlapped and the next page is printed while printing the data of even pages.

In addition, when a user incorrectly sets a printing paper on which odd-numbered data is printed on a cassette, there is another problem that duplex printing is incorrect and the printing must be restarted from the beginning.

In addition, there is another problem that the consumables of the all-in-one is wasted when the same printing several times due to printing errors.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to sequentially display a recognition mark capable of recognizing a page on an upper side of a front side of a printing paper on which odd-numbered data is printed, so that the opposite side of the printing paper. Before printing the data of the even pages in, the recognition mark displayed on the front side of the printing paper is detected and duplex printing is performed accurately by printing the data of the even pages only when the recognition marks are sequentially connected.

In addition, another object of the present invention is to prevent waste of consumables by performing two-sided printing at a time when the two-sided printing command is delivered.

1 is a block diagram schematically showing a multifunction device to which the present invention is applied;

2a and 2b is an operation flowchart for explaining the duplex printing method of the multifunction apparatus according to the present invention,

3 is a configuration cross-sectional view showing a state in which the optical sensor of the present invention is installed in the multifunction device,

Figures 4a and 4b is a view showing how the odd-page data is printed on the printing paper in accordance with an embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

1: multifunction machine 2: cassette

3: printing paper 10: central processing unit

20: printer 30: memory

40: light sensor 50: operation panel

51: display device

A feature of the present invention for achieving such objects is that, if a print command and print data is transferred from a computer, detecting whether to print on both sides; If it is detected as duplex printing, a recognition mark for recognizing the page is sequentially displayed on a predetermined portion in front of the print paper on which odd-numbered data of the print data is printed, and all odd-numbered pages of the print data are printed; When all the odd-page data is printed and the printing paper is reloaded to supply the first printing paper, the first page is detected by detecting the recognition mark displayed on a predetermined portion in front of the first printing paper, and comparing it with the data previously stored in the storage means. Check; When the first page is checked, it detects the mark for recognition of the printing paper supplied after the first, and prints all the data of even pages of the printing data while checking the sequential order of the printing paper compared with the data previously stored in the storage means. Is in point.

Preferably, the front predetermined portion of the printing sheet is characterized in that the predetermined position in front of the printing sheet so that the predetermined data is detected before the printing sheet is fed.

Preferably, the recognition mark is characterized in that any one of binary or octal, decimal or hexadecimal.

According to another aspect of the present invention, the printing means sequentially displays a recognition mark capable of recognizing a page on a predetermined portion of one side of a printing sheet by a predetermined control signal, and prints the print data; The page recognition means detects a mark for recognition; In the storage means, a page corresponding to the recognition mark is pre-stored in the form of a table; The warning means informs the print error by a predetermined control signal inputted; The control unit controls the system as a whole and detects duplex printing when the print command and print data are transmitted, and stores the print data in the storage means in the case of duplex printing, and the odd page data and the recognition mark among the stored print data are sequentially Control the printing means to be displayed on the printing paper, and detect the page by comparing the recognition mark detected by the page recognition means and the table stored in the storage means when printing the reverse side, and if the detected pages are sequentially connected, It is to print data of an even page, and to control a warning means to notify a user of a printing error if the detected pages are not sequentially connected.

Preferably, the page recognizing means is an optical sensor installed at a predetermined portion so as to correspond to the upper opening of the cassette when the cassette on which the printing paper is set is inserted.

Preferably, the recognition mark is characterized in that any one of binary or octal, decimal or hexadecimal.

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

1 is a block diagram schematically illustrating a multifunction apparatus to which the present invention is applied, and FIGS. 2A and 2B are flowcharts illustrating a double-sided printing method of a multifunction apparatus according to the present invention, and FIG. 3 is an optical sensor of the present invention. 4A and 4B are diagrams showing data of odd pages printed on printing paper according to an embodiment of the present invention.

1 and 3, first, the central processing unit 10 controls the entire system, and in particular, when a print command and print data transmitted from a computer PC are transferred, whether the double-sided printing is detected and double-sided printing is performed. The print data is stored in the memory 30, and the printer 20 is controlled so that odd number of pages and recognition marks capable of recognizing pages among the print data stored in the memory 30 are sequentially displayed on the printing paper 3. When printing the data of the even pages on the opposite side, the optical sensor 40 is controlled to detect the page by comparing the recognition mark and the table stored in the memory 30 to recognize the page detected by the optical sensor 40, If the detected pages are sequentially connected, the data of even pages of the print data is printed. If the detected pages are not sequentially connected, the printing error is displayed on the display device 51 of the operation panel 50. To notify the user of printing errors.

The printer 20 prints the print data transmitted from the computer PC under the control of the central processing unit 10, and in particular, the printing paper 3 on which odd pages are printed by the control signal of the central processing unit 10. A recognition mark capable of page recognition is sequentially displayed in front of the. Here, the recognition mark capable of page recognition is composed of binary numbers.

The memory 30 is used as a buffer for image processing in the image processing unit 70, and also stores a whole system program, data processed in the system, etc., in particular, a page corresponding to a recognition mark capable of page recognition. Is stored in the form of a table. That is, a decimal number corresponding to a binary number is stored.

The optical sensor 40 is installed at a predetermined portion of the multifunction apparatus 1 so as to correspond to the upper opening of the cassette 2 when the cassette 2 on which the printing paper 3 is set is inserted, so as to control the central processing unit 10. And a recognition mark capable of recognizing a page displayed on the printing paper 3 as a signal received by irradiating light onto the printing paper 3 by the light.

An operation panel (OPE) 50 displays a key (character keys, function keys, etc.) and a printing error message for displaying a print error message under the control of the central processing unit 10 so as to generate key data. It is configured to include).

The scanner module 60 is configured to scan the printing paper 3 by the control of the central processing unit 10 as a part for scanning the original to detect the scanning data.

The image processor 70 may perform shading and gamma correction, dot per inch conversion, edge emphasis, and error diffusion on scanning data input from the scanner module 60. )).

The rasterizer 80 rasterizes the scanning data scanned into the vertical blocks.

The Enhanced Capabilities Port (ECP) 90 is a module for bidirectional parallel interface with a computer (PC) in accordance with IEEE 1284, and transmits scanned scanning data to a computer (PC) or print data transmitted from a computer (PC). This is for receiving.

The modem 100 and the LIU 110 are interface means for transmitting and receiving with an external facsimile.

Hereinafter, the operation of the present invention will be described with reference to the operation flowcharts of FIGS. 2A and 2B, which will be described in detail as an example.

First, when the print command and the print data of 1 to 8 pages are transmitted from the computer PC (S110), the central processing unit 10 detects whether to print on both sides (S120). Therefore, if the print data of 1 to 8 pages is duplex printing, the printer 20 is controlled to display the binary numbers as shown in FIGS. 4A and 4B on the upper left side of the front of the printing paper 3 on which the data of 1, 3, 5, 7 pages are printed. 1, 10, 11, and 100 (recognition markers) consisting of 1, 3, 5, and 7 pages are sequentially displayed on the first, second, third, and fourth sides, and the data on pages 1, 3, 5, and 7 Print (S200).

When the data of 1, 3, 5, 7 pages is printed (S310), and the user resets the printing paper 3 on which the data of 1, 3, 5, 7 pages is printed on the cassette 2, the central processing is performed. When the printing paper 3 is fed, the apparatus 10 controls the optical sensor 40 to detect a 1 (recognition mark) displayed in binary numbers on the printing paper 3 to be supplied first, as shown in FIG. 4A ( S320). Thus, the detected 1 (recognition mark) is compared with a table previously stored in the memory 30 to detect whether the first page is present (S330, S340). If the first page is confirmed, data of two pages of data (even-numbered data) is printed (S350).

Then, the central processing unit 10 again controls the optical sensor 40 to detect 10, 11, 100 (recognition marker) displayed in binary numbers on the second to fourth printing papers 3 (S410). Thus, the detected 10, 11, 100 (recognition markers) are compared with the table previously stored in the memory 10 (S420), the page is detected (S430), and the detected page is ascending in succession to the previously detected page. (Ie, 2, 3, 4), 2, 4, 6, and 8 pages of data are printed on the second, third, and fourth sides of the printing paper 3 (S440).

Thereafter, the central processing unit 10 checks whether the print job is finished (S450), and if the print job is not finished, returns to the above step 410 (S410) and repeats all the processes after the step 410 (S410). And, if the print job is finished, all the processing ends (S460).

If the central processing unit 10 does not print on both sides in step 120 (S120), the printing is finished through a general printing process (S130). If the recognition markers are not connected in ascending order in step 430 (S430), printing is interrupted (S360), and the printing error is displayed by controlling the display device 51 of the operation panel 50 to notify the user of the printing error (S470). ).

Therefore, when the printing paper 3 on which odd-numbered data has been printed is not sequentially supplied or another printing paper is supplied during duplex printing, the duplex printing is stopped and the user is notified of this.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As described above, the present invention sequentially displays a recognition mark capable of recognizing a page on a front upper surface of a printing paper on which odd-numbered data is printed, before printing the data of even-numbered pages on the opposite side of the printing paper. By detecting the recognition mark displayed on the front surface of the front side, the duplex printing is performed accurately by printing data of even pages only when the recognition marks are sequentially connected.

In addition, another object of the present invention has another effect of preventing the waste of consumables by performing two-sided printing at a time when the two-sided printing command is transmitted.

Claims (6)

A duplex printing detection step of detecting whether to print on both sides when the print command and the print data are transmitted from the computer; When the duplex printing is detected in the duplex printing detection step, a mark for recognizing a page is sequentially displayed on a predetermined portion in front of a print sheet on which odd-numbered data of the print data is printed, and the odd-numbered pages of the print data are displayed. A data display step of printing all of them; And In the data display step, when the data of the odd pages are all printed and the printing paper is re-fed and the first printing paper is supplied, the recognition mark displayed on the front predetermined portion of the first printing paper is detected and stored in the storage means. A page checking step of checking a first page by comparing with previously stored data; And When the first page is confirmed in the page checking step, the recognition mark of the printing paper supplied after the first time is detected, and the printing is performed while checking the sequential order of the printing paper in comparison with the data previously stored in the storage means. By including a page sequential step of printing all of the data of even pages of data; When duplex printing, data that can recognize the page is sequentially displayed on a predetermined portion of the front side of the printing paper, and when printing the reverse side, the predetermined data displayed on the front of the printing paper is checked to stop printing if the pages are not sequentially connected. How to print on both sides of the all-in-one. The method according to claim 1, wherein the front predetermined portion of the printing sheet is a predetermined front upper position of the printing sheet such that the predetermined data is detected before the printing sheet is fed. The duplex printing method of claim 1, wherein the recognition mark is one of binary or octal or decimal or hexadecimal. Printing means for sequentially displaying a recognition mark capable of recognizing a page on a predetermined portion of one side of a printing sheet fed by a predetermined control signal, and printing printing data; Page recognition means for detecting the recognition mark; Storage means for pre-stored pages corresponding to the recognition mark in the form of a table; Warning means for informing a printing error by a predetermined control signal input; And Control means for controlling the system as a whole; When the print command and the print data are transmitted, the control unit detects whether to print on both sides, and when the print command is double-sided, the print data is stored in the storage unit, and the odd page data and the recognition mark among the stored print data are sequentially stored. Controlling the printing means to be displayed on a printing sheet, detecting the page by comparing the recognition mark detected by the page recognition means with the table stored in the storage means when printing the reverse side, and the detected pages are sequentially connected. And printing the data of even pages of the print data, and notifying the user of a printing error by controlling the warning means if the detected pages are not sequentially connected. 5. The duplex printing apparatus of claim 4, wherein the page recognizing means is an optical sensor installed at a predetermined portion so as to correspond to an upper opening of the cassette when the cassette on which the printing paper is set is inserted. The duplex printing apparatus of claim 4, wherein the recognition mark is one of binary or octal or decimal or hexadecimal.