JPH0368972A - Plotting system for electrophotographic printer - Google Patents

Abstract

PURPOSE:To decrease the margin part of printing paper and to avert the wasteful consumption of the paper by plotting and developing data at a reduced size in the mapping corresponding to the reduced size of the plotting of every page. CONSTITUTION:This printer saves the data from a host computer into a signal receiving buffer 1. A control section 2 reads the page reduction command in the buffer 1 and maps according to the reduced size into the one-page frame buffer 5 in the frame buffer 3. For example, the control section 2 plots and develops the data of the first page into the part A in the buffer 5 and plots and develops the 2nd and subsequent pages successively into the parts B... when the reduced size is 1/2 size both vertically and horizontally. The data of the buffer 5 is thereafter discharged to a printing section 4 which in turn executes printing for the reduced 4 pages on one page of the printing paper.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drawing method for an electrophotographic printer, and particularly to a drawing method in a reduction mode.

[Conventional technology]

Conventionally, in this type of page reduction mode drawing method, one page's worth of data is reduced and expanded in a one-page frame buffer and printed.

[Problem to be solved by the invention]

In the conventional drawing method in page reduction mode described above, one page's worth of data is reduced and expanded in the one-page frame buffer and printed, resulting in a large amount of blank space and a lot of wasted printing paper. There are drawbacks.

[Means to solve the problem]

The drawing method of the electrophotographic printer of the present invention stores data from a host computer in a receiving buffer, reads the receiving buffer, develops the data to be drawn into a frame buffer, and sends out the data in the frame buffer to the printing unit. In the drawing method of an electrophotographic printer that prints data, mapping is performed in units of pages reduced to one page frame buffer in the frame buffer according to the drawing reduction size for each page, and It is characterized by drawing and expanding in a reduced size.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
The figure shows a one-page frame buffer of the frame buffer 3 in FIG. 1.

When an electrophotographic printer receives data from a host computer or the like, it saves it in a reception buffer 1. Control part 2
reads the page reduction command in receive buffer 1,
Appropriate mapping is performed in a one-page frame buffer 5 in a frame buffer 3 according to the reduced size.

As a simple example, reduce the size of one page to 1/2 both vertically and horizontally.
The case where the host sends the size and data for 14 pages will be explained. That is, when the two sides of one page are a and b as shown in FIG. 2, the case where the two sides of the reduced size of one page are a/2° and b/2 will be explained. The control unit 2 maps the reduction command in the first page data to part A in the one-page frame buffer 5 shown in FIG. 2, and vertically and vertically maps the sent first page data.
The drawing is developed within the mapped portion A according to the horizontal reduction size.

Regarding the data from the second page onward, mapping 1 drawing is performed in the same manner as parts B, C, and D in the 1-page frame buffer 5.

Thereafter, the rendered data in the one-page frame buffer 5 is discharged to the printing section 4, and one page of each of the four reduced pages is printed on one page of printing paper. As described above, several pages can be printed on one page of printing paper by appropriate mapping according to the reduced page size.

〔Effect of the invention〕

As explained above, the present invention has the effect of eliminating wasteful consumption of printing paper and saving energy by making it possible to print several pages within one page of printing paper depending on the page reduction size.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing a one-page frame buffer in the frame buffer 3 of FIG. 1. DESCRIPTION OF SYMBOLS 1... Reception buffer, 2... Control section, 3... Frame buffer, 4... Printing section, 5... 1 page frame buffer. 7th position

Claims (1)

[Claims] In a drawing method of an electrophotographic printer, data from a host computer is stored in a receiving buffer, data to be drawn by reading the receiving buffer is developed in a frame buffer, and data in the frame buffer is delivered to a printing unit for printing. An electronic device characterized in that mapping is performed in units of reduced pages to one page frame buffer in the frame buffer in accordance with the drawing reduction size for each page, and drawing is expanded in the reduced size within the mapping of reduced page units. A drawing method for photo printers.