JPH0349966A - Printer - Google Patents

Abstract

PURPOSE:To shorten processing time by transferring only a printing position without an image drawing process of a blank character in a printing data by a method wherein a character code information table which checks a character code and a means which checks the character code are established. CONSTITUTION:A printer loads a character pattern and a character code corresponding to the character pattern when a power source is closed. Then when the character pattern is loaded, pattern checking is performed. For an all '0' code (blank code), a bit of a character code information table 2 corresponding to said character code is set up and the character pattern is loaded. A control part 1 starts printing action and when an image is drawn, checks the bit of the character code information table 2. When the bit is set up, only transfer of a printing position is performed and next character processing is performed without performing image drawing operation. That is, one page image drawing time is shortened and high speed printing operation is made capable of being performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing device, and particularly to a printing device used in an output device such as an information processing system.

[Conventional technology]

FIG. 2 is an explanatory diagram showing an example of a conventional printing device. In the same figure, when the printing device is powered on, the control unit 7 takes in a character pattern and the character code corresponding to the character pattern from the higher level, and during printing operation, the character code corresponding to the character data from the higher level is referred to the character code conversion memory 3. and take it out. Then, based on this character code, the control unit 7 calculates the storage address of the character pattern, extracts the character pattern from the character pattern conversion memory 4, and repeatedly expands it to the drawing memory 5 to generate one page of print image. Output to the output section 6. Among the character data from the upper level, there are also blank character patterns in which nothing is printed, and these are treated as the same character data as other characters, and are even subjected to drawing processing.

[Problem to be solved by the invention]

In the above-mentioned conventional printing device, the "Δ" (space character) also has a character pattern of - character bones and is drawn, so it has a character code and a character pattern corresponding to it and stores it in the drawing memory in the same way as other characters. Perform expansion. Therefore, even for a space character that does not print anything, the control unit calculates the character pattern storage address using the character code, extracts the character pattern, and expands it to the drawing memory, so when printing a blank space, time and operations are wasted. There is a drawback.

[Means to solve the problem]

The printing device of the present invention includes a code conversion memory for converting upper-level data into codes, a character pattern conversion memory for converting character codes into character patterns, a drawing memory for drawing print data, a control section for controlling drawing, and an output and a character code information table for checking the character code, and means for checking the character code.

〔Example〕

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

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

In the figure, the printing device loads a character pattern and a character code corresponding to the character pattern when the power is turned on. At this time, a pattern check is performed when loading a character pattern, and for all "0" codes (blank codes), the bit in the character code information table 2 corresponding to that character code is set and the character pattern is loaded.

The control section 1 starts the printing operation and checks the bit of the character code information table 2 during drawing, and if the bit is set, only moves the printing position and performs the next character processing without performing the drawing operation. In other words, the drawing processing time for one page is shortened to enable high-speed printing operation.

〔Effect of the invention〕

As explained above, according to the present invention, only the printing position of a blank character included in print data is moved without performing drawing processing, so that processing time can be shortened. In other words, there is an effect that the printing apparatus can perform high-speed printing by shortening the processing time for one page.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. 1...Control unit, 2...Character code information table, 3
...Character code conversion memory, 4...Character pattern conversion memory, 5...Drawing memory, 6...Output section.

Claims (1)

[Claims] It includes a code conversion memory for converting upper-level data into codes, a character pattern conversion memory for converting character codes into character patterns, a drawing memory for drawing print data, a control section for controlling drawing, and an output section. A printing device comprising a character code information table to be checked and means for checking character codes.