JPH02208048A - Liquid jet recorder - Google Patents

Abstract

PURPOSE:To always obtain a high-grade recorded material regardless of the type of paper used by selecting a font of suitable dot density according to the type of a target medium to be recorded and recording information. CONSTITUTION:When a code signal (or a picture signal) is inputted, a selecting means B is selected, and a font corresponding to the inputted signal is transmitted from a storage means A to a recording means C. In response to the font, a drop of recording liquid is jetted toward the medium to be recorded from a nozzle to record information. Consequently, recording is carried out with a font of dot density suitable to the type of the medium to be recorded, for instance, a picture is formed with a font of low density on paper on which the recording liquid (ink) easily runs, and with a font of high density on paper on which the recording liquid does not run smoothly; therefore, a character is not smeared in spite of a large dot diameter, and a high-grade recording condition can be achieved constantly.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid jet recording device that records characters, symbols, images, etc. by jetting recording droplets onto a recording medium.

[Prior Art] A liquid jet recording device called an inkjet printer or the like forms an image such as a character on a recording medium by ejecting recording droplets of ink or the like. Conventionally, when this type of recording apparatus uses paper as a recording medium, it usually maintains a certain recording quality (also referred to as print quality) by using special paper to obtain the optimum density and dot diameter.

However, as can be seen from the relationship between paper type (paper quality) and output dot diameter in Figure 3, the amount of recording liquid (generally ink) absorbed differs depending on the paper type, and the dots recorded on the paper surface differ. The diameter will change.

Because of this phenomenon, even if the same characters are output, when plain paper is used in conventional devices, depending on the type of paper, the characters may be too thin or may be crushed.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems by using a liquid jet recording device that can always provide high-quality recording without characters being too thin or crushed, regardless of the type of paper used. Our goal is to provide the following.

(Problems to be Solved by the Invention) However, in recent years, there has been a growing demand for liquid jet recording apparatuses to record information using plain paper, which is commonly used, as a recording medium.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a liquid jet recording device that records information by jetting recording droplets onto a recording medium. a storage means for storing a plurality of sets of fonts with dot densities, a selection means for selecting a font of a dot density corresponding to the type from the storage means in response to an instruction signal indicating the type of recording medium, and a selection means by the selection means. The present invention is characterized by comprising a recording means for recording information using a designated font.

Another aspect of the present invention provides a liquid jet recording device that records information by jetting recording droplets onto a recording medium, in which a plurality of dot-structured fonts corresponding to human code signals are stored. a mask generating means for selectively outputting masks of different configurations according to an instruction signal indicating the type of recording medium; and a mask output from the mask generating means for the font read from the storage means. The present invention is characterized by comprising a recording means for recording information using a font obtained by applying the same process.

(Function) With the above configuration, the present invention records information by selecting fonts with different dot density configurations depending on the type of recording medium (generally paper) to be recorded. This means that you can record with a font that allows you to record at the optimal quality for the type of recording medium you are using. This prevents the inconvenience of the recording medium being too narrow or too thin, and high-quality recording can always be obtained regardless of the type of recording medium.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIGS. 1(^) and 1(B) show the basic configuration of an embodiment of the present invention. First, in FIG. 1(^), A is a storage means that stores a plurality of sets of fonts with different dot densities. Reference numeral B designates selection means for selecting, from the storage means A, a font having a dot density corresponding to the type of recording medium in response to an instruction signal indicating the type of recording medium. C is a recording means for recording information using the font selected by the selection means B.

That is, when a code signal (or image signal) is input, selection means B is selected, and the font corresponding to the input signal is sent from storage means A to recording means C, and recording droplets are ejected from the nozzle according to the font. is ejected toward the recording medium to record information. As a result, recording is performed using a font with an appropriate dot density that corresponds to the type of recording medium, so for example, if the paper is made of paper that easily bleeds through the recording liquid (ink), use a font with a 12 degree dot density that will not bleed the recording liquid. In the case of paper, images are formed using fine-density fonts, so even if the dot diameter becomes large, letters do not become blurred, and a high-quality recording is always achieved.

Next, referring to FIG. 1(B), reference numeral D represents a storage means that stores a plurality of dot-structured fonts corresponding to input code signals. Reference numeral E denotes a mask generating means for selectively outputting masks of different configurations in accordance with an instruction signal indicating the type of recording medium. F is a recording means for recording information using a font obtained by applying a mask output from the mask generation means E to the font read from the storage means.

That is, when a code signal (or image signal) is input manually, a font corresponding to this input signal is output from the storage means, a mask obtained by the mask generation means E is applied to this font, and the font that passes through this mask is outputted from the storage means. Information is recorded by the recording means F using a font having a dot structure. Since the above marking corresponds to the type of recording medium, recording is performed using a font with an appropriate dot density corresponding to the type of recording medium. Similar effects can be obtained.

Here, the following can be considered as means for generating the above-mentioned instruction signal that causes the recording apparatus to recognize the type of paper (type of recording medium).

■ Supply instruction signals as data from a host device such as a word processor or computer device.

■ The operator inputs the paper type and type data manually from the panel switch on the operation desk.

■ Prepare separate paper cassettes for each type of paper, attach protrusions at different positions on each cassette, install a detector on the recording device side to detect the protrusions, and send the above instruction signal from this detector. to occur.

■ Prepare separate paper cassettes for each type of paper, attach members (resistors) with different resistance values to each cassette, and read the resistance values of the members on the recording device side to generate the above instruction signal. .

■ A unique mark (marker) that differs depending on the type of paper is placed in advance on a predetermined position on the paper, and the above instruction signal is generated by detecting this mark with a marker reading device on the recording device side. .

FIG. 2 shows a specific circuit configuration of an embodiment of the present invention.

In this figure, 1 is a CPU (Central Processing Unit) that controls the entire control operation, 2 is a RAM (Random Access Memory) used as a buffer area, CPL II work area, etc., and 3 is a program that stores the CPU control program. It is ROM (read only memory). 4 is a recording data receiving unit that receives data sent from the host device 13 and passes it to the CPUI; 5 is an information signal input unit that inputs information signals (such as operation signals or paper jam detection signals) from 6 to the CPU; The hand-powered boat 8 is an output boat that supplies a drive signal from the old C1 to the drive unit 7 of the carriage etc.

9 is a head driver lO according to a control signal from the CPU.
A head controller 11 controls the voltage, etc. of the head driver 10, and 11 is a print head that ejects print droplets toward the paper from a plurality of linear nozzle arrays in response to drive signals from the head driver 10. 12 is a timer for controlling the timing of the head controller 9;

! 6 is a font memory (ROM) that stores three sets of fonts with different dot densities, and 15 is a font switching device that switches and specifies the set of fonts to be output in the font memory 16 in accordance with instructions from the CPU.

Next, the operation will be explained.

First, the host device 13 sends data (instruction signal) indicating the type of paper to the inkjet printer 14. The recorded data receiving unit 4 that has received the data notifies the CP of this data. The CPIII switches the font switching device 15 based on this data, and specifies the font in the font memory 16 suitable for the type of paper.

After that, according to the character data sent from the host device 13, the old CP reads the designated font from the font memory 16, drives the head driver IO through the head controller 9, and prints the characters on the paper by ejecting ink from the recording head 11. Record above.

Figures 4 (^), (B), and (C) show examples of different fonts for the same character stored in the font memory 16 of Figure 2. Figure 4 takes the character ^ as an example; In the case of paper that can be recorded under normal conditions, for example, in the case of special paper, a font with a fine dot density (^) is specified, and in the case of paper with some ink smearing, the diameter of the dots becomes large after recording. The font (B) with a somewhat rough dot density is specified, and in the case of paper with severe ink bleeding, the font (C) with a rough dot density is specified.

Figures 5 (B), (C), (D) and Figure 6 (
E1), (C), and (D) show examples of fonts in this embodiment when the resolution is high.
B) ~ (DJ is an enlarged version of the part indicated by α in Figure 5 (A), and similarly, Figures 6 (B) ~ (D) are Figure 6 (^
), (B) is specified for paper with little ink bleeding, (C) is specified for paper with some ink bleeding, (D) is a font designated for paper with severe ink bleeding.

In the case of Figures 5 (B) to (D), the font is constructed by thinning out the dots so that the shape of the characters is maintained even if the ink smears, and in the case of Figure 6 (B) to (0), the font is composed of “The font is composed of thin lines so that the thickness of the lines will not change due to ink bleeding.

FIG. 7 shows the circuit configuration of another embodiment of the present invention. In this figure, 16 is a font memory (ROM) that stores one type of font (basic font), and 17 is (:PIIl).
A mask pattern memory (ROM) 18 selectively generates masks of different patterns according to instruction signals from the font memory 16 and a mask output from the mask pattern memory 17. It is an AND circuit. The mask output from the mask pattern memory 17 is specified by the CP old corresponding to the type of paper used. The rest of the configuration is the same as that of the embodiment shown in FIG. 2, so a description thereof will be omitted.

In this embodiment, instead of having multiple sets of fonts, the mask pattern memory 17 is
By selecting a mask and performing a logical product (AND) between the mask and the font in an AND circuit 18, dots are thinned out at a constant ratio, and the number of recorded dots for one character is reduced.

FIG. 8 shows the relationship between the mask and the font in the embodiment of FIG. 7, and A in FIG. 8 indicates an example of the basic font stored in the font memory 16. B-1, B-2.

Figure 3 shows an example of masks with different patterns output depending on the type of paper. Here, mask 8-1 is specified for paper with little ink bleeding (for example, special paper), mask B-2 is specified for paper with some ink bleeding, and mask B-3 is specified for paper with little ink bleeding (for example, special paper). is specified for paper with severe ink bleeding. Also, in the same figure, A-1, A-2
, ^-3 are output from the above-mentioned AND circuit 18 and are examples of fonts actually used for recording, that is, A
The -1 font is an AND of the A font and the 8-1 pattern. ^-2. The same applies to ^-3.

〔Effect of the invention〕

As explained above, according to the present invention, a font that corresponds to changes in dot diameter due to bleeding of recording liquid (ink) depending on the type of recording medium (paper) is used. First, it is possible to always perform high-quality recording.

[Brief explanation of the drawing]

Figures 1 (^) and (B) are functional block diagrams showing the basic configuration of the embodiment of the present invention, Figure 2 is a block diagram showing the circuit configuration of the first embodiment of the present invention, and Figure 3 is the implementation of the present invention. Characteristic diagrams showing the relationship between paper type and dot diameter that can be applied to the example device, Figures 4 (^), (B), and (C) are the first characteristics of the present invention.
An explanatory diagram showing an example of a font corresponding to the paper type for the same character in the embodiment, Figures 5 and 6 respectively correspond to the paper type when the resolution is increased in the first embodiment of the present invention. FIG. 7 is a block diagram showing the circuit configuration of the second embodiment of the present invention. FIG. 8 is an explanatory diagram showing the relationship between the mask and the output font in the second embodiment of the present invention. be. 1,...cpu. 2,...RAM. 3. Program ROM. 4,...Record data receiving section, 5,...Input boat, 6,...Information signal input section, 7,...Drive section, 8,...Output boat, 9,...Head Controller, 10,... Head driver, 11,... Recording head, 12,... Timer, 13,... Host device, 14,... Printer, 15,... Font switching device, 16 ,...Font ■ 17,...Mask pattern ROM. 18,...AND circuit. Old 61f, waving in the darkness - light figure of the ``hunt 0 Ij'' running in the dormitory Figure 4 Figure 1
Figure (A) Old age 11 hours and 84 rows f) No. 1 publication and an example of a font C with a high O-ri font. 4 < 76 (Q Tsuta) 1 to eliminate the font of 1, Figure 6

Claims (1)

[Scope of Claims] 1) A liquid jet recording device that records information by jetting recording droplets onto a recording medium, comprising: a storage means that stores a plurality of sets of fonts with different dot densities, and the recording medium. a selection means for selecting a font having a dot density corresponding to the type of medium from the storage means in response to an instruction signal indicating the type of medium; and a recording means for recording the information using the font selected by the selection means. A liquid jet recording device comprising: 2) In a liquid jet recording device that records information by jetting recording droplets onto a recording medium, the storage means stores a plurality of fonts having dot configurations corresponding to input code signals; mask generating means for selectively outputting masks of different configurations in accordance with an instruction signal indicating a type; and for the font read from the storage means;
A liquid jet recording apparatus comprising: recording means for recording the information using a font obtained by applying the mask output from the mask generation means.