JPS58160167A - Thermal-sensitive recorder - Google Patents

Abstract

PURPOSE:To obtain the titled device in which a thermal-head applying energy regulating means is set up onto a driver loading type thermal head, applying energy can be adjusted by a thermal head single body and a power supply section can be miniaturized. CONSTITUTION:The means 2a regulating applying energy to the thermal head 3 is set up to a head drive section 2. The head drive section 2 and the head 3 are mounted onto the same substrate as the thermal head 5. Applying energy to the thermal head 3 can be adjusted when manufacturing the head unit 5, and the head unit 5 may be replaced when exchanging heads.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to thermal recording devices such as thermal printers, particularly when replacing a thermal head due to a malfunction or the like, various disadvantages at the time of replacement. It is intended to improve the

Background of O technology A thermal head used in a thermal recording device is composed of a plurality of heating resistors. Each heating resistor is connected to the drive section (
Joule heat is generated by the drive signal from the driver. That is, the thermal head generates a photothermal pattern according to print information using a drive signal from a drive unit, and the generated thermal pattern is printed on thermal paper. This good quality thermal head is constantly in pressure contact with the thermal paper, and generally has a short lifespan due to wear and other factors. Therefore, the head part is constructed so that it can be replaced with a harmful bird.

O Conventional technology and gap - Conventionally, when replacing the thermal head, the new installation was done so that the heat generated by the thermal head would be constant in response to the variation in resistance of each generating resistor in the head. Voltage tube adjustment of the drive signal was performed. Furthermore, the voltage of the drive signal was adjusted by adjusting the power supply voltage tube from the drive power source supplied to the power tube for driving the ψ drive.

A schematic diagram of the configuration of a conventional thermal recording device is shown in 111K, 1a print control section, and 3! Drive unit, 3 goes to thermal! 4 is a head driving power source.

The operation of the device will be explained below. The print control section 1 outputs a selection signal t to the head drive section BK corresponding to the input print information. The head driving section 2 selectively applies a driving signal tube to the heating resistor of the thermal head 3 based on this selection signal.

As a result, a thermal pattern corresponding to the print information is formed on the thermal head 3. The head drive power supply number is
It supplies the ninth drive signal output power to the head drive unit 2. Conventionally, this head drive power source 4'',
Output voltage t1411 means 4a were provided.

Therefore, when replacing the head 3t, the voltage adjusting means 4a adjusts the output voltage tslIm of the drive power supply number, and adjusts the applied voltage of the thermal head 3 corresponding to the variation in resistance value of each heating resistor of the head 3 to the power supply side. It is necessary to adjust the nine. Furthermore, the replacement work is done at the destination where the equipment is delivered, so voltage measuring instruments, etc. must be brought to the destination! It may be necessary to adjust the applied voltage. In this way, it takes a lot of effort and time to make a het ° exchange @, and it has become a simple thing to exchange a hed. It was hoped that the process would be faster.

- Purpose of the Invention The purpose of the present invention is to standardize the power source of the device and downsize the power supply section in order to eliminate the above-mentioned drawbacks of the conventional technology. It is an object of the present invention to provide a heat-sensitive recording device that can achieve the above-mentioned problems and facilitate and speed up head replacement.

In order to achieve the above object, the thermal recording device of the present invention includes a thermal head having a plurality of heat generating resistors and a drive section that outputs a drive signal according to input print information to the plurality of heat generating resistors. A thermal recording device is provided with a thermal head unit mounted with a drive 1s mounted on the same substrate, and a means for adjusting the output energy of the heating resistor according to the resistance value of the heating resistor is provided on the substrate. This is a characteristic.

Embodiment w of the Invention Figure 2 is a principle block diagram showing the structure of an embodiment of the thermal recording apparatus according to the present invention [$P]. In the same figure.

2a is applied energy adjustment means, and 5 is a thermal unit. The same parts as in Figure 1G1 are designated by the same reference numerals, and their explanation will be omitted.

That is, in the present invention, the head driving section 2 is provided with means aat-1 for adjusting the energy tube applied to the thermal head 3. 9.Head drive part 2)" 3t
−? - It is provided on the same substrate as the multi-head unit δ. Accordingly, the energy applied to the thermal head 3 (electricity/voltage or hahalus width) can be adjusted in advance when the head unit 5 is manufactured. Therefore, when replacing the head.

It is only necessary to replace the head 1 unit 5, and head replacement can be greatly speeded up. The present invention will be explained in detail using Examples below.

FIG. 3 is an external view of the embodiment of the thermal droplet unit 5 shown in FIG. 2. The unit shown in Figure 113 is what is referred to as a driver-mounted thermal head, where l is a ceramic substrate, 10 is a dot line of a heat generating resistor, and 6 is a metal plate, which serves as a heat sink and rigidity reinforcement for the ceramic substrate. The part surrounded by the broken line 8 is the mounting area of the XC constituting the driver 1, 9 is the connector, 11 is the stamp processing energy adjustment section, and 12 is the stamping wall. The length shown in - Crane head unit 5 mounted on a purple ceramic substrate γ 1. The aim is to miniaturize the unit and make the equipment smaller in stores. In this example.

Further head applied energy adjustment g1 to this board two
1 and a variable resistor 'l1h12t- are provided.

This adjustable resistor 12#C allows the applied energy (voltage or pulse width) to be adjusted in advance with a single thermal head, and there is no need to adjust the flAKa applied energy when replacing the head.

Effects of the Invention As described above, according to the present invention, the driver-equipped m
Since the thermal head applied energy adjusting means is provided on the thermal head, 1111!1 of the applied energy can be applied in advance to the thermal head alone, thereby speeding up the head replacement work and improving the usage efficiency of the device.

[Brief explanation of the drawing]

Figure 1: Block diagram showing the configuration of a conventional thermal recording device,
FIG. 2 is a principle block diagram showing an embodiment of the thermal recording apparatus of the present invention, and FIG. 3 is a diagram showing an embodiment of the thermal recording unit 5 shown in FIG. 2. F is a ceramic substrate, 1
0 is a dot line of a heating resistor, 11 is a printing energy adjustment section, and 12 is a variable resistor. 1st old ? figure

Claims (1)

[Claims] Equipped with a drive unit-mounted thermal head unit equipped with a thermal head having multiple heat generating resistors and a drive unit that outputs the sum of the multiple heat generating resistors on the same board. 1. A heat-sensitive recording device, characterized in that means is provided on the substrate for adjusting the output energy tube of the heat-generating resistor according to the resistance value of the heat-generating resistor.