JPH04129752A - Multiple printing sheet for ultrasonic vibration printer and its duplicate printing method - Google Patents

Abstract

PURPOSE: To enable copy printing on multiple paper by an ultrasonic vibration printer by jetting printing paper on and after the second printing paper to pressure-sensitive paper and changing the current supply time to an ultrasonic vibrator corresponding to the kind of printing paper. CONSTITUTION: A mode (a) shows the case of one printing paper and a mode (b) is in the case of multiple printing paper and, when the mode (b) is selected by a mode selection means 26, a mode adjusting means 22 selects the current supply pulse width: Tc of the mode (b) and the drive pulse width: Td thereof. In the mode (b), the drive pulse width: Tc and the current supply pulse width: Td are extended. This means that a head moving speed becomes slow and a current supply time becomes long. By this constitution, the moving speed of a carriage and the current supply time to an ultrasonic vibrator 8 are changed between the case of one printing paper and the case of multiple printing paper. By making a dot printing time long and using pressure-sensitive paper as printing paper on and after the second printing paper, the copy printing to the printing paper on and after the second printing paper becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for printing multiple sheets of paper in an ultrasonic printer using an ultrasonic vibrator as a printing drive source.

[Prior art and problems to be solved by the present invention] In the prior art, the only printer that can print on multiple sheets of paper is the Inopact Printer, and thermal printers, ultrasonic vibration printers, etc. It was not possible to print on. In addition, when printing on multi-layered paper using an Innovakto printer, if necessary to improve the printing quality, adjust the printing pressure of the head by changing the gear knob, etc. of the print head or do depending on the thickness of the paper. was.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for printing on multiple sheets of paper using an ultrasonic vibration printer.

[Means for Solving the Problems] The present invention uses pressure-sensitive paper for the second and subsequent sheets of multiplex paper, and prints each dot on the gutter using ultrasonic printing according to the number of multiplex paper sheets and the thickness of the paper. By changing the length of the driving time, it is possible to print on multiple sheets of paper.

[Function] Normally, when printing is performed using ultrasonic vibration energy, a thermal transfer ribbon or f-thermal paper is used. However, although the first W can be printed using this method, it is not possible to print on the second collection port using this method because paper has low thermal conductivity.

The inventors of the present invention have made it possible to print on multiple sheets of paper using an ultrasonic vibration printer (after repeated various experiments,
By using pressure-sensitive paper after the second collection port and increasing the energization time to the ultrasonic transducer depending on the thickness of the multiple sheets, etc.
It was experimentally confirmed that printing is possible even after the collection point.

The details of the printing mechanism after the second collection port in this case are not yet known, but as vibration energy above a certain level is continued to be applied, for some reason, the accumulated vibration energy produces a coloring effect on the pressure-sensitive paper. It is thought to cause this.

[Example] Examples of the present invention will be described below.

FIG. 1 is a block diagram schematically showing an apparatus for implementing the method of the present invention.

In the figure, 2 indicates the entire printing paper, and 3 indicates the IWth printing paper. Normally, thermal paper, pressure sensitive paper, or plain paper is used as the IW-th printing paper, and in the case of plain paper, a thermal transfer rib (not shown) is used between the printing gutter and the printing paper 2. 4
indicates the second sheet of printing paper, and pressure-sensitive paper is used. Reference numeral 6 denotes a printing nozzle using an ultrasonic vibrator 8 as a printing drive source. 1
0 is a sine wave oscillator that generates a sine wave with the same frequency as the resonance frequency of the ultrasonic transducer 8; 12 is the ultrasonic transducer 8;
Ultrasonic transducer 8 by controlling the transmission of sine waves to
This is an analog switch to control the energization time. 14 is a power amplifier for operating (vibrating) the ultrasonic transducer 8 according to the received sine wave. 1
Reference numeral 6 denotes a carriage-driving steno-knob motor for moving a not-illustrated carriage supporting the printing gutter 6 along the platen 5. 18 drives the stepping motor 16 in response to a motor drive pulse received by a motor driver. A mode adjusting means 22 adjusts the vibration time of the ultrasonic transducer 8 and the moving speed of the carriage motor according to the selected mode.

A print dot register 24 stores print dot data for each print head 6. Reference numeral 25 denotes a control section that controls each of the above-mentioned sections. Reference numeral 26 denotes a mode selection means for selecting the type of printing paper 2 (number of printing papers, etc.) according to the user's input.

The operation of each part will be explained.

When the type of printing paper 2 is selected by the mode selection means 26, a mode signal is sent to the control section 25. Control part 2
5 outputs a mode adjustment signal to the mode adjustment means according to the mode signal. The mode adjustment means 22 adjusts the energization time and the moving speed of the lever according to the mode adjustment signal, as will be described later.

When print data is sent to the control unit 25 from a host terminal (not shown), a dot pattern is read from a font ROM (not shown) or the like, and print dots are set in the print dot register 24. This print data processing is conventional technology and is not the gist of the present invention, so it will not be described further. Print dots are set in the print dot register 24 for each print head 6, and analog switch 1
2 and a power amplifier 14 are provided for each print head 6, but to simplify the explanation, this embodiment shows a case where there are [] number of printing nozzles.

When the printed dot is set, the ultrasonic transducer 8 is driven via the analog switch 12 and the power amplifier 14.
Dot printing is performed. On the other hand, the carriage motor control unit 20, motor driver 18, and motor 16
Head 6 is moved along platen 5.

Next, regarding the adjustment operation by the mode adjustment means 22, the
This will be explained using figures.

Figure 2 is a timing diagram showing the relationship between the moving speed of the printing slurry and the time for energizing the printing throat 6. FIG. 2 shows two modes, mode (a) and mode (b). In the figure, mode (a) shows the case of one sheet of printing paper, and mode (b) shows an example of the case of multiple printing paper. Mode (a).

In any mode (b), the A phase B phase of ■～■
The C-phase and D-phase waveforms represent drive pulse waveforms at four poles A, B, and CD of the stepping motor 16 for driving the carriage. Similarly, in any mode, the waveform of ■ represents the waveform of the energization pulse supplied to the ultrasonic transducer 8, and the waveform of
represents the drive signal that drives the vibrator 8. In this embodiment, it is assumed that one drive pulse moves the dot by one dot.

Now, if mode (a) is selected by mode selection means 26, a mode adjustment signal representing mode (a) is transmitted from control section 25 to mode adjustment means 22. Thereby, the mode adjustment means 22 adjusts the drive pulses ■ to ■ (drive pulse width Ta) of the mode (a) in FIG. 2 set in advance.
is input to the motor driver 18 to drive the stepping motor I6. Energizing pulse for each drive pulse (
Pulse width: Tb) is output to the analog switch 12. The pulse widths Ta and Tb are predetermined so as to provide the optimum printing form in the mode (a) when printing one sheet of paper.

When mode 1'' (b) is selected by the mode selection means 26, the mode adjustment means 22 selects the mode (b) shown in FIG.
Select the energizing pulses ■ to ■ (pulse width: Tc) and the drive pulse ■ (pulse width: Td).

In mode (b), the drive pulse width, TC, and energization pulse width Td are longer. This means that the hennod movement speed became slower and the energization time became longer. Ta
, Tb and Tc, Td have the following relationship.

Ta: Tc = Tb: Td The above relationship keeps the changes in printing speed and printing time constant, and if this relationship is not maintained, the number of dots printed in mode (8) and mode (b) will change. Width (horizontal length)
Please be careful as the results will be different.

In this way, the speed of movement of the carrier and the time of energization to the ultrasonic transducer 8 were changed depending on whether one sheet of printing paper was printed or multiple printing sheets were printed. in this way,
Measure 2: Increase the dot printing time and use pressure-sensitive paper for the printing paper after the collection exit. [It is now possible to print copies after the first one.

At this time, the printing paper at the first collection port may be thermal paper, pressure-sensitive paper, or plain paper (in the case of plain paper, thermal transfer printing is performed.

[Effects of the Invention] As explained above, in the present invention, the printing paper after the second leaf is pressure-sensitive paper, and by changing the energization time to the ultrasonic transducer 8 depending on the type of printing paper, ultrasonic It was possible to print copies on multiple sheets of paper using a sonic vibration printer.

[Brief explanation of the drawing]

FIG. 1 is a conceptual block diagram schematically showing an apparatus for carrying out the method of the present invention, and FIG. 2 shows the relationship between the horizontal movement speed of the print head 6 and the current supply time to the print head 6 in mode. FIG. 2... Printing paper, 3... Printing paper at the first collection port, 4... Printing paper at the second collection port, 5... Brate, 6... To print, do, 8... Ultrasonic vibrator , 10... transmitter, I2
・Analog switch, 14...Power amplifier, 16
- Carry, drive mode 20 - AND gate, 22 Mode adjustment means, 26 - Mode selection means Application agent Yoshiaki Nishiyama ■ A-phase mode (a) Figure 2 ■ A-phase ■ B-phase mode (b)

Claims (2)

[Claims] (1) An ultrasonic vibrating printer that uses an ultrasonic vibrator as a printing drive source and prints by ultrasonic vibration, characterized in that the second and subsequent sheets of multiple printing paper, which is the printing medium, are pressure-sensitive paper. Multiple printing paper for ultrasonic vibration printers. (2) In an ultrasonic vibrating printer that uses an ultrasonic vibrator as a printing drive source and prints by ultrasonic vibration, whether the printing medium is a single sheet of paper or multiple sheets as described in claim 1, etc. Multiple printing is performed by selecting a printing paper mode according to the type of paper, the number of sheets of the multiplexed paper, etc., and changing the energization time applied to the ultrasonic transducer according to the mode of the printing paper. A method of copy printing on paper.