JPH04320872A - Drawing data control mechanism of page printer - Google Patents

Abstract

PURPOSE:To prevent the generation of waste toner when drawing data is developed on a frame buffer so as to exceed the width of printing paper. CONSTITUTION:A form data control part 6 adds the printing mode controlled by a printing mode control part 5 and the data of a paper size to the form data received by an interface control part 1 to store them in a page buffer 8. A drawing part 3 develops the form data on the page buffer 8 on a frame buffer 9 as a printing image and outputs the printing mode and the data of the paper size stored in the page buffer 8. An excessive drawing data erasing part 7 compares two printing modes and the data of the paper size from the printing mode control part 5 and the drawing part 3 and, when the developed form data exceeds the width of printing paper, the form data corresponding to the part developed so as to exceed the width of printing paper is erased from the frame buffer 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing data management mechanism for a page printer.

0002

[Prior Art] A drawing data management mechanism of a conventional page printer changes the printing mode (portrait/landscape) or paper size of the page printer after receiving forms data, and changes the printing paper width when drawing forms data. Even if drawing was performed beyond the limit, the drawing data remained.

0003

[Problem to be Solved by the Invention] In the drawing data management mechanism of the conventional page printer described above, even if drawing is performed beyond the width of the printing paper, the drawing data remains, so if the printing process is performed as is, the drawing data will remain. , the drawing data exceeding the printing paper width is not transferred to the printing paper, and the toner in the drawing data portion exceeding the printing paper width becomes waste toner. Therefore, if such processing is performed frequently, toner is wasted and the amount of waste toner increases.

0004

[Means for Solving the Problems] The drawing data management mechanism of the page printer of the present invention includes a print mode management unit that manages print mode and paper size, a page buffer, a frame buffer, and receives drawing data from the outside. a forms data control unit that receives the drawing data received by the interface control unit, adds information on the print mode and paper size obtained from the print mode management unit, and stores it in the page buffer; a drawing unit that develops drawing data stored in a page buffer as a print image on the frame buffer and outputs information on the print mode and paper size added to the drawing data stored in the page buffer; The information on the print mode and paper size obtained from the drawing section is compared with the information on the print mode and paper size obtained from the print mode management section, and the drawing data exceeds the width of the print paper on the frame buffer. and an extra drawing data erasing section that detects that the drawing data has been developed and erases the drawing data that has been developed beyond the width of the printing paper from the frame buffer.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

[0007] When the data received by the interface control unit 1 is form data, the received data control unit 2
passes the forms data to the forms data control section 6. In the forms data control unit 6, the print mode management unit 5
The paper size and print mode (portrait/landscape) information obtained from the above are added to the forms data and stored in the page buffer 8.

[0008] When a forms overlay command is received after the above processing, the drawing unit 3 draws the forms data on the page buffer 8 onto the frame buffer 9, and saves the paper size and print mode information added to the forms data. It is passed to the drawing data erasing section 7.

The remaining drawing data erasing section 7 compares the paper size and printing mode information obtained from the drawing section 3 with the current paper size and printing mode information obtained from the printing mode management section 5, and determines the printing paper width. If forms data is drawn beyond the printing paper width, the data in the area exceeding the printing paper width on the frame buffer 9 is erased.

0010

As explained above, the present invention eliminates wasteful consumption of toner by erasing data in the area exceeding the width of the printing paper when drawing is performed beyond the width of the printing paper. It has the effect of suppressing the generation of waste toner.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

[Explanation of symbols]

1 Interface control section 2 Reception data control section 3 Drawing section 4 Printing mechanism 5 Print mode management section 6 Forms data control section 7 Additional drawing data erasing section 8 Page buffer 9 Frame buffer

Claims (1)

[Claims] 1. A print mode management unit that manages print mode and paper size, a page buffer, a frame buffer, an interface control unit that receives drawing data from the outside, and a drawing data that is received by this interface control unit. a forms data control unit that adds information on the print mode and paper size obtained from the print mode management unit and stores it in the page buffer; and prints the drawing data stored in the page buffer onto the frame buffer. a drawing unit that outputs the information on the print mode and paper size added to the drawing data developed as an image and stored in the page buffer; and the information on the print mode and paper size obtained from this drawing unit; It compares the information on the print mode and paper size obtained from the print mode management section, detects that the drawing data has been expanded beyond the width of the print paper on the frame buffer, and extracts the print paper from the frame buffer. A drawing data management mechanism for a page printer, comprising an extra drawing data erasing section for erasing drawing data expanded beyond the width.