JPH02220127A - Print controller - Google Patents

Abstract

PURPOSE:To attain a normal printing operation even though the density of the input image data is different from the printing density of a printer by deciding the density of the input image data and changing the density of the print image data in order to secure the coincidence between the density of the input image data and the printing density of the printer. CONSTITUTION:A density deciding part 6 decides automatically the density of the input image data from the main scanning direction and the subscanning frequency of the input image data. Then the part 6 compares the density of the input image data with the printing density of a printer 5 and reports this density information to a density conversion part 7. The part 7 converts the print image data received from an arithmetic processing part 2 into the double density in both main and subscanning directions respectively based on the density information. Thus the new print image data is produced with (m) dots in the main scanning direction and (n) lines in the subscanning direction. As a result, a normal printing operation is attained even though the density of the image data is different from the printing density of the printer 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a print control device used in a printer device or the like.

In particular, the present invention relates to a print control device that converts the density of input image data in accordance with the print density of a printer device.

[Conventional technology] The configuration of a conventional example will be explained with reference to FIG.

FIG. 3 is a block diagram showing a conventional print control device.

In FIG. 3, the conventional printing control device includes a host interface unit (1) connected to a host computer (not shown), an arithmetic processing unit (2) connected to this host interface unit (1), and a calculation processing unit (2) connected to this host interface unit (1). The print image data storage section (3) is connected to the print image data storage section (2), and the printer control section (4) is connected to the arithmetic processing section (2) and the print image data storage section (3).

Note that the printer control unit (4) includes a printer device (5).
is connected.

Next, the operation of the above-mentioned conventional example will be explained with reference to FIG.

FIG. 4 is an explanatory diagram showing input image data and print image data input and output by a conventional print control device.

The host interface unit (1) receives input data from the host computer, including input image data of dots in the main scanning direction and i-lines in the sub-scanning direction, in accordance with the printing density of the printer device (5), as shown in FIG. Enter
It is passed to the arithmetic processing unit (2).

The arithmetic processing section (2) performs sorting such as extracting input image data from the input data, and creates print image data of dots in the main scanning direction and n lines in the sub-scanning direction, as shown in FIG.

The print image data storage section (3) stores the above-mentioned print image data.

The printer control unit (4) outputs the stored print image data to the printer device (5), and the print image data is printed as an image.

[Problems to be Solved by the Invention] In the conventional printing control device as described above, input image data must match the print density specific to the printer device, and if the density does not match, printing is stopped. There was a problem that the image was distorted.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a printing control device that can perform normal printing even when the density of input image data differs from the printing density of the printer device. shall be.

[Means for Solving the Problems] A printing control device according to the present invention includes the following means.

(i) A host interface unit for inputting input data including input image data.

(ii) an arithmetic processing unit that organizes the input data according to a print format and creates print image data from the input image data;

(open), a density determination unit that determines the density of the input image data.

(i) a density conversion unit that converts the density of the print image data to match the print density of the printer device based on the output of the density determination unit;

(V) A print image data storage unit that stores the print image data whose density has been converted.

(vi) a printer control unit that outputs the stored print image data to the printer device;

[Operation] In the present invention, input data including input image data is input by the host interface section.

Further, the arithmetic processing unit organizes the two input data according to the printing format, and creates print image data from the input image data.

Furthermore, the density of the input image data is determined by a density determining section.

Furthermore, the density conversion section adjusts the print density to match the printing density of the printer device based on the output of the density determination section.
The density of the print image data is converted.

Furthermore, the print image data whose density has been converted is stored in the print image data storage section.

Then, the stored print image data is outputted to the printer device by the printer control section.

[Example] The configuration of the embodiment will be explained with reference to FIG.

FIG. 1 is a block diagram showing one embodiment of the present invention, which includes a host interface section (1) to a printer control section (4).
) is exactly the same as that of the conventional device described above.

In FIG. 1, one embodiment of the present invention includes exactly the same components as those of the conventional device described above, a density determination section (6) connected to a host interface section (1), and an arithmetic processing section (2). and a density conversion unit (7) whose input side is connected to the density determination unit (6) and whose output side is connected to the print image data storage unit (3).

Note that the printer control unit (4) includes a printer device (5).
is connected.

Next, the operation of the above embodiment will be explained with reference to FIG.

FIG. 2 is an explanatory diagram showing input image data and print image data input and output according to an embodiment of the present invention.

The host interface unit (1) connects the printer device (5) from the host computer, for example, as shown in FIG.
Input data including input image data of -/2 dots in the main scanning direction and n/2 lines in the sub-scanning direction, which is half of the printing density of , is input and passed to the arithmetic processing section (2).

The arithmetic processing unit (2) organizes the input image data by extracting it from the input data, creates print image data of -/2 dots in the main scanning direction and n/2 lines in the sub-scanning direction, and processes the image data in the density conversion unit (7). ).

On the other hand, the density determination unit (6) determines the density based on the number of scans in the main scanning direction and the sub-scanning direction of the input image data (i.e.,
The number of data between the horizontal and vertical synchronization signals is counted using a counter or the like. ), automatically determines the density of the input image data, compares it with the printing density of the printer device (5), and notifies the density information to the density converter (7). In the above example, it is reported that the density of the input image data is half the print density.

Based on the density information, the density converting unit (7) performs density conversion on the print image data from the arithmetic processing unit (2) by doubling it in both the main scanning direction and the sub-scanning direction, as shown in FIG. Next, new print image data of flying dots in the main scanning direction and n lines in the sub-scanning direction is created.

The print image data storage section (3) stores the above-mentioned new print image data.

The printer control unit (4) outputs the stored new print image data to the printer device (5), and the new print image data is printed as an image.

One embodiment of the present invention has a density determining section (6) as described above.
), density converter (7), etc., it is possible to convert the density of the input image data and create print image data suitable for the printer device, so the image will not be distorted during printing and will work normally. This has the effect that a beautiful printed image can be obtained.

Note that in the above embodiment, an example of converting input image data with low density to print image data with high density was explained, but in the opposite case, that is, the density of the input image data is higher than the density of the print image data. Even if the density is large, similar effects can be expected if density conversion is performed by thinning out or the like.

[Effects of the Invention] As explained above, the present invention includes a host interface unit that inputs input data including input image data, and a host interface unit that inputs input data including input image data, organizes the input data according to a print format, and creates print image data from the input image data. a density determining unit that determines the density of the input image data; and a density converting unit that converts the density of the print image data to match the printing density of the printer device based on the output of the density determining unit. and a print image data storage section that stores the print image data whose density has been converted, and a printer control section that outputs the stored print image data to the printer device, so that the density of the input image data can be changed. This has the effect that normal printing can be performed even when the printing density differs from that of the plinking device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing input image data and print image data input and output according to an embodiment of the invention, and FIG. 3 is a conventional print control diagram. FIG. 4 is a block diagram showing a bag/placement, and is an explanatory diagram showing input image data and print image data input and output by a conventional print control device. In the figure, (1)... host interface section, (2)...
Arithmetic processing unit, (3)... Print image data storage unit, (4) ・
... Printer control section, (5) ... Printer device, (6) ... Density determination section, (7) ... Density conversion section. In each figure, the same reference numerals indicate the same or equivalent parts. Figure 2 Input - Image to be increased

Claims (1)

[Claims] A host interface unit that inputs input data including input image data, an arithmetic processing unit that organizes the input data according to the print format and creates print image data from the input image data, and a density that determines the density of the input image data. a determination unit; a density conversion unit that converts the density of the print image data to match the print density of the printer device based on the output of the density determination unit; a print image data storage that stores the print image data whose density has been converted; What is claimed is: 1. A print control device comprising: a printer controller; and a printer controller that outputs the stored print image data to the printer device.