JPS6213147Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a multi-pen XY recording device. Specifically, the invention corrects the phase difference between each recording pen with a time delay to obtain recording without phase difference. This relates to the constructed multi-pen XY recording device.

Traditionally, in multi-pen XY recording devices,
Although the recording pens move together in the X-axis direction, they can move independently in the Y-axis direction, and each pen naturally has a phase difference in the X-axis direction. are doing. In this case,
When recording by moving at a constant speed in a constant direction with respect to the axial direction, a recorded waveform with no phase difference can be obtained by giving each pen a signal delayed in relation to the moving speed and phase difference using a well-known phase method. However, there is a problem in that the direction and speed of movement are generally not constant in the X-axis direction, and the phase cannot be corrected using the above-mentioned phase synchronization method.

The present invention was developed in view of these points, and is equipped with a processor, which corrects the phase difference between each recording pen with a time delay under the control of the processor.
Phase correction that allows recording without phase difference
This is an attempt to realize an XY recording device.

The present invention will be explained in detail below using the drawings. FIG. 1 is a block diagram showing an embodiment of a phase-corrected XY recording device according to the present invention, and specifically illustrates an XY recording device having two recording pens. In FIG. 1, a carriage C that is movable in the X-axis direction is provided on the recording paper PA surface, and this carriage C has a first
And second recording pens P ₁ and P ₂ are attached movably in the Y-axis direction. The recording pens P ₁ and P ₂ can be individually raised and lowered by a well-known mechanism. Note that the recording pens P ₁ and P ₂ are not limited to ink pens, but may be other writing instruments, thermal pens, discharge recording electrodes, photo heads, etc. recording pen
As shown, P ₁ and P ₂ are configured to have a phase difference l in the X-axis direction, and are driven by motors M ₁ and M ₂ , respectively, to be displaced in the Y-axis direction, as shown in FIG. _{Y 1 axis and}
The Y _two- axis input signal and the X-axis input signal are respectively converted into digital signals by analog-to-digital converters (hereinafter referred to as AD converters) AD ₁ , AD ₂ , and AD ₃ and guided to the processor PC. Motor M ₁ ,
Motor M ₂ and motor M ₃ that drive carriage C receive signals supplied from processor PC through digital-to-analog converters (hereinafter referred to as DA converters) DA ₁ , DA ₂ , DA ₃ and drivers D ₁ , D _{2 .} ，
Supplied via _D3 . The processor PC
It is possible to store the output data of the AD converter and sequentially send out data based on the X-axis signal data and the phase difference l between the recording pens P ₁ and P ₂ , and also generate a signal to control the up and down of the recording pens. . In addition,
Since the up/down mechanism of the recording pen has little direct relation to the present invention, its explanation will be omitted here.

The operation of the present invention in such a configuration will be described next. For example, the AD converter AD ₃ converts the X-axis signal into an AD signal at a fast cycle, and then converts the X-axis signal to a minute displacement Δx (e.g.
The configuration is such that the Y _1- axis and Y _2- axis input signals are digitally converted by AD converters AD ₁ and AD ₂ for each variation corresponding to 0.05 mm). 1/Δx words are sufficient for data storage for each Y-axis signal. When the X-axis signal increases (carriage C moves to the right), the first recording pen _P1 located on the right side is moved down, and the Y1 _- axis signal AD-converted by the AD converter AD is sent through the processor PC. The signal is sent to the DA converter DA ₁ without any time delay, and _{the second pen P 2 is} turned down to record data with the pen P _1.
l/Δx AD converted and stored in the processor PC
Give the previous Y _2- axis signal to the DA converter DA ₂ and send it to the second pen P ₂
to record it. On the other hand, when the X-axis signal starts to decrease (carriage C moves to the left), the first pen P ₁ is turned up (or the first pen P ₁ remains down).
(Hold the input signal of the DA converter DA ₁ ) and store the _Y1 axis signal in the processor PC. In this state, the second pen _P2 continues to write in the right direction, but after finishing writing the stored data for l/Δx for the second pen, the X-axis signal is stored so that the carriage C moves to the left. Data is sequentially output to DA converter DA ₃ .
Then, when the carriage C moves to the left by l, the first pen _P1 is brought down (if the first pen _P1 is down and its signal is held, the hold is released), and the signal is moved l/Δx forward. Output and record the Y ₁ axis memory data. In this way, the carriage C
By outputting data with an appropriate delay depending on the moving direction of the pen, it is possible to correct the phase difference between the pens and record Y1 _- axis and _Y2- axis signals with no phase difference.
In the embodiment, a two-channel recording pen has been described, but even in the case of a multi-channel pen having three or more channels, recording can be performed by correcting the phase difference in the same manner.

FIG. 3 shows an example of recording when two channel input signals are recorded using the recording apparatus of the present invention. Figure 3A is a diagram when recording is performed by appropriately controlling the up and down of the pen, and Figure 3B is a diagram when the same input signal as in Figure 3A is recorded with the pen down, and the X-axis direction is A waveform is shown in which a hold line parallel to the X-axis of length l is simultaneously recorded when the movement is reversed.

As explained above, according to the phase-corrected XY recording device of the present invention, the Y-axis and X-axis input signals are stored in the processor, and the input signals are appropriately adjusted in relation to the There is a time delay in
By outputting to the axis and X-axis driving circuits, it is possible to obtain a recording waveform in which the phase difference of the pen is corrected, and the effect is great in practical use.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a phase correction XY recording device according to the present invention, FIG. 2 is a block diagram showing an embodiment of a circuit related to the input signal processing section of the device shown in FIG. 1, and FIG. The figure is a waveform diagram when recording is performed simultaneously with a two-channel recording pen. P ₁ , P ₂ ... Recording pen, C ... Carriage,
AD ₁ , AD ₂ , AD ₃ ... AD converter, PC ... Processor, DA ₁ , DA ₂ , DA ₃ ... DA converter, D ₁ ,
_D2 , _D3 ...Driver, _M1 , _M2 , _M3 ...Motor.

Claims (1)

[Scope of utility model registration request] In an XY recording device equipped with a carriage equipped with a plurality of recording pens having a specific phase difference,
A plurality of AD converters that individually digitally convert the Y-axis input signal of each recording pen, an X-axis AD converter that digitally converts the X-axis input signal, and a Y-axis AD converter that individually converts the Y-axis input signal of each recording pen. a plurality of DA converters that send out signals for moving the carriage in the X-axis direction; an X-axis DA converter that sends out signals for moving the carriage in the X-axis direction; Store each of the above in relation to the X-axis data.
It is characterized by comprising a processor that outputs the data of the AD converter to each corresponding DA converter, and configured to correct the phase difference in the X-axis direction by a time delay and record it under the control of the processor. Phase correction XY recording device.