JPS634980A - Recorder - Google Patents

Abstract

PURPOSE:To enhance moving characteristics in feeding a carriage and enable highly functional printing such as boldface printing and proportional space printing, by changing a moving pulse rate according to the excitation conditions of a linear pulse motor at the start and stop of movement of the carriage and the moving distance of the carriage. CONSTITUTION:Inputting is conducted according to inputs from a keyboard 22. According to the control by a CPU 21, a selected one of types on a type wheel 9 is struck through a printing mechanism 5, thereby performing printing on a recording paper 3 through an ink ribbon 4, and a carriage 1 is moved. It is discriminated whether the printing mode is a boldface printing mode, and when it is discriminated that the mode is the boldface printing one by referencing a pitch changeover switch 23 in a step T1, the carriage 1 is moved by 1/120 inch by referencing a table 20a in a step T2, and the second printing of an inputted character is conducted. When it is discriminated that the moving amount is not more than 7/120 inch, the table 20a is referenced, and a linear pulse motor 25 is driven according to values in the table, thereby moving the carriage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, and more particularly to a recording device that uses a linear pulse motor to move a carriage on which a printing mechanism is mounted.

[Prior Art] Conventionally, as shown in FIG. 2, a carriage l equipped with a printing mechanism 5 reciprocates left and right with respect to a platen 2 on which a recording paper 3 is attached, and prints a type wheel 9 selected according to printing information. A recording apparatus is known in which printed characters are recorded on recording paper 3 via an ink ribbon 4. The power means for moving the carriage l along the platen in accordance with the printing is as follows:
A rotary pulse motor or DC motor 6 is used to move the carriage 1 via a belt or wire 7.

[Problems to be Solved by the Invention] In recent years, in order to reduce costs and simplify assembly, more and more recording devices are using linear pulse motors as carriage moving means. -generally liters per inch
To print O characters, 12 characters, and 15 characters, the resolution of the carriage is 1760 inches, and when using a linear pulse motor to move the carriage, -
A commonly used two-phase excitation type linear pulse motor with a resolution of 1/80 inch was used.

-On the other hand, a resolution of at least 1/120 inch is required for bold printing and proportional printing.
When using a linear pulse motor with a two-phase excitation system and a resolution of 1/120 inch, if you try to match the movement speed of a 1760 inch linear pulse motor for printing operations such as carriage return or tab, the drive frequency will increase. There is a problem in that the frequency is doubled and noise is generated due to high frequency driving.

Therefore, the present invention has been made to solve these problems, and an object of the present invention is to provide a recording device that improves the dynamic characteristics during carriage movement using a linear pulse motor and is capable of high-speed and high-quality printing. With the goal.

Means for Solving Problem E 1 In order to solve this problem, the present invention adjusts the movement pulse rate according to the excitation state of the linear pulse motor at the start and stop of carriage movement and the movement distance of the carriage. We adopted a configuration that allows for changes.

[Function] In such a configuration, a dedicated moving speed (pulse rate) table is provided for the moving distance of the carriage and the excitation phase state of the linear pulse motor. By incorporating a single-phase excitation method into a linear pulse motor with a resolution of 1, the dynamic characteristics during carriage movement are improved, making it possible to perform high-performance printing such as bold printing and proboscisal space printing.

[Example] The present invention will be described in detail below according to an example shown in one drawing.

FIG. 1 shows an embodiment of the recording device according to the present invention, in which, like the recording device shown in FIG. The recording paper 3 is struck through the printing mechanism 5 and recorded on the recording paper 3 on the platen 2. Type wheel 9, printing mechanism 5,
A carriage 1 carrying an ink ribbon 4, etc. is reciprocated along a platen 2 by a linear pulse motor lO,
Printing is performed sequentially.

Generally, in such recording devices, the number of characters that can fit in one inch is fixed, and proportional space printing (hereinafter referred to as P
They are 10 characters, 12 characters, and 15 characters except for "S printing". In this case, the minimum resolution required of the carriage equipped with the printing mechanism is 1/60 inch, and in the case of bold printing, the resolution is 1/60 inch from the reference position as shown in Figure 3.
/120 inch, print by shifting the carriage. In PS printing, each character has its own amount of space, so when combined with the case described above, there is a moving space in 1/120 inch increments from 1/120 inch to 14/120 inch.

Also, if the margin, tab, etc. are set at the l-phase excitation position, the movement will start from the l-phase excitation state, and n/120
In the case of inch movement, if n is an even number, the movement will stop in the 1-phase excitation state. Further, when n is an odd number, a two-phase excitation state and a one-phase excitation state exist at each of the start of movement and the stop of movement.

There is a large difference in the output of the linear pulse motor between the l-phase excitation state and the two-phase excitation state, as shown in FIG. The movement pulse rate is changed as follows according to the condition.

a) When the amount of movement is 1/120 to 7/120 (inch), since the amount of movement is small at this amount, it is better to separate the 1-phase excitation state and 2-phase excitation state at the start of movement and when stopping after movement. , all use a 1-2 phase excitation method.

Therefore, regardless of the excitation phase at the start of movement and at the time of stopping after movement, the movement is made according to a table based on one type of 1-2 phase excitation method for each movement distance.

This table is shown in Figure 5, and the pulse waveform is shown in Figure 6 (A
), CB). As shown in Figure 5, the amount of movement is 1/120~? /120 inches each
~7 pulses are generated, but if one feed amount is taken, it can be seen that the pulse rate changes. That is, for example, in the case of 37120 inch feed, it is 10.0
,7.0,2.0, oo (oo indicates that it is stopped in the excitation phase) yes, and 4712
For 0 inch feed, 8.0, 8.0, 8.0, 2
．． 0° flash ■S. These states are shown in FIG. 6(A).

(B), and in each figure (a) to (d)
indicates the start of movement in the two-phase excitation state, and (a') to (d'
) is the start of movement in the 1-phase excitation state, but the same table value is used in either case.

b) When the amount of movement is 8/120 to 14/120 inches, different types of tables are provided depending on the excitation phase state at the start of movement and at the time of stopping after movement. Each table basically has 2
It is a phase excitation method, and the following table is provided with 0 combinations that make one phase excitation state only when necessary.

If the feed amount is n/120 and n is an even number, the movement starts from the 1-phase excitation state (l-phase start), and if the movement stops in the 1-phase excitation state (1-phase stop), Fig. 7 and As shown in FIG. 8(A), T81. T101. T12
1. 6 using the table value of Tl41 e.g. T131
The table value for (87120 inch feed) is 10.0,8
．． 5, 8.5, and 13.1 ms, and the waveform diagram is shown in FIG. 9(A).

Next, if n is an even number and the movement starts from the 2-phase excitation state (2-phase start) and the movement stops in the 2-phase excitation state (2-phase stop), as shown in Figures 7 and 8 (B). T82.
TlO2, T122. For example, the table values for T82 (8/120 inch feed) are 11.0, 8, 5, 11.5, 12.0ms, and this waveform diagram is shown in Figure 9 (B). Illustrated in.

Also, when the feed amount is n/120 and n is an odd number, when the l-phase starts and the 2-phase stops, Figs. 7 and 8 (C)
Table values of Tl1l, Ti1l, and T131 are used as shown in the figure.

For example, the table values for Tl31 (8/120 inch feed) are 10.0, 7.5, 7.5, 7.5, 8.5 ms, and the waveform diagram is shown in FIG. 9(C). Also n
is an odd number and 2-phase start, the 8th phase is stopped as 1-phase stop.
As shown in figure (D), T92. T112. T132
．． For example, the table values for T92 (9/120 inch feed) are IQ, Q, ? ,5,8.0
, 13.5ms, and the waveform diagram is shown in FIG. 9(D).

Note that in the tables of FIGS. 6(A) and 6(B), "." indicates that the motor is in a one-phase excitation state for damping, and flashing indicates that the motor is stopped in that phase.

C) When the amount of movement is 15/120 inches or more, the combination is the same as described in b), but all tables are driven by the two-phase excitation method as one type. However, starting to move,
1-phase excitation is applied only when 1-phase excitation is required during stoppage.

The relationship between the movement distance and the table value is as shown in Fig. 1θ. In the example, when n is an even number (n/120), the relationship between the movement distance is small and the movement distance is large is shown in Fig. 11 (A
) and (B), where the moving pulse rate gradually increases, passes through the center, and then decreases following the same curve in reverse.

Also, when n is an odd number, similarly when the moving distance is small,
A large case is illustrated in FIG. 11(C), CD). In this case, the 17120-inch moving portion M is inserted first or last.

FIG. 12 shows a moving table 20a to 20a as described above.
The table 20 is stored in ROM format as 20c. This table 20 is connected to a CPU (central processing unit M) 21 that controls the entire system. C
The PU 21 performs recording control in response to inputs from the keyboard 22 and inputs from a switch 23 that switches between bold printing and normal printing, and changes the pitch, and drives the linear pulse motor 25 via the linear motor drive circuit 24.
(corresponding to 10 in FIG. 1) is driven to perform recording.

Recording control for changing the pulse rate according to the amount of movement using such a configuration will be described with reference to the flowchart in FIG. 13.

In step Sl, an input is made in accordance with the input from the keyboard 22, and in step S2, under the control of the CPU 21, the selected type is struck from the type wheel 9 via the printing mechanism 5, and the ink ribbon 4 is sent to the recording paper 3.
The carriage l is moved. At this time, in step S3, it is determined whether or not bold printing is performed, and T1
When bold printing is determined by referring to the pitch changeover switch 23 at step S4, the table 20a is referred to at T2 and the carriage L is moved in the manner described above at step S4.
The input character is moved by 1/120 inch, and the second input character printing is performed in step S5, for example, bold printing as shown in FIG. 3 is performed.

Next, in Mechitsubu S6, the pitch changeover switch 23
(T3) to calculate the distance to the next print position or tab position. At this time, in step S7, the amount of movement is T.
/ 120 inches or less, the linear pulse motor 25 is driven in accordance with the table values shown in FIG. 5 with reference to the table 20a in step S8 to move the carriage (step S9).

If the feed amount is 8/120 inches or more, the excitation phase state at the start position is determined in step SIO. In the case of 1-phase start, in step Sll,
In addition, in the case of a two-phase start, the excitation phase state at each stop position is determined in step 312, and in steps S13 to 316, the corresponding table (see FIG. 7,
1O), and in step S9, the carriage 1 is moved by the pulse linear motor 25 accordingly. As mentioned above, from 8/120 to 14/
In the case of 120 inch feed, different tables are referred to depending on the amount of movement, and in the case of 15/120 inches or more, one type of table is referred to.

[Effects] As described above, according to the present invention, when the carriage of a recording device is moved by a linear pulse motor, the carriage is moved according to the moving distance of the carriage and the excitation phase state at the start of movement and at the time of stopping after movement. Since the pulse rate is changed, for example, with a two-phase excitation system and a linear pulse motor with a resolution of 1/80 inch, the minimum resolution is 1/120.
Enables bold printing and PS printing required in inches.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a recording device according to the present invention, Fig. 2 is a schematic perspective view of another type of recording device, Fig. 3 is an explanatory diagram explaining bold printing, and Fig. 4 is a difference in excitation phases. The waveform diagram shown in Figure 5 shows the output change due to 1/120~? /12
Table showing table values for 0 inch feed, Figure 6 (A),
(B) is 3/120 each. Waveform diagram showing 4/120 inch feed, Figure 7 is 8/12
Tables showing table values for 0 to 14/120 inch feed, Figures 8 (A) to (D) are tables showing table values corresponding to each feed amount, and Figures 9 (A) to (D) are tables showing table values corresponding to each feed amount. A waveform diagram showing the movement pulse waveform according to each feed amount, the first θ diagram is 15/
A diagram showing the amount of movement in the case of a feed amount of 120 inches or more,
Figures 11 (A) to (D) are diagrams showing the amount of movement, respectively;
FIG. 12 is a block diagram showing the electrical configuration of the recording apparatus, and FIG. 13 is a flow chart showing the flow of control. 1... Carriage 2... Platen 4... Ink ribbon 5... Printing mechanism 9... Type wheel 10... Linear pulse motor (N W gO, -w -Mido---Na11
nikan-top 9-sho@expo-yo (A) (B) (C) Chiful 41 纂8 [14th side Otsu

Claims (1)

[Claims] 1) A type wheel that holds a plurality of type characters, a printing mechanism that strikes selected type characters and prints on recording paper via an ink ribbon, and a carriage equipped with the type wheel and the printing mechanism. , a linear pulse motor that moves the carriage relative to a platen that holds recording paper, and a movement pulse rate that changes according to the excitation state of the linear pulse motor at the start of movement and when stopping after movement and the distance traveled by the carriage. Characteristic recording device. 2) For travel distances from the minimum travel distance to approximately 7 times that distance, the travel pulse rate is based on a dedicated table in the 1-2 phase excitation method, regardless of the excitation phase state at the start and stop of travel. A recording device according to claim 1, wherein the recording device uses: 3) If the moving distance is approximately 8 to 14 times the minimum moving distance, use a moving pulse rate based on a table that differs depending on the combination of excitation phase states at the start and stop of moving and whether the multiple of the moving amount is an even or odd number. A recording device according to claim 1 or 2. 4) When the moving distance is about 15 times or more the minimum moving distance, the moving pulse rate according to the dedicated table in the two-phase excitation method is used. The recording device according to item 3.