JPH01267081A - Recording device - Google Patents

Abstract

PURPOSE:To enable time corresponding to data to be easily determined by allowing the transport amount of a recording medium to be changed in response to the period of input data and subsequently enabling a record length (transport amount) per unit time to be made constant with a constant temporal scale on the recording medium. CONSTITUTION:A control circuit 5 outputs a specified signal to a motor rotational angle control circuit 11 when data of a single line begins to be entered (or the entry is completed). Since this time, the motor rotational angle control circuit 11 begins, for instance, counting clock pulses, then detects time (period) to be spent until a signal is again entered and outputs any appropriate signal for a detection period to a motor drive circuit 7. The motor drive circuit 7 drives a motor 3 by time corresponding to the detection period. Consequently, the rotational angle (the transport amount of recording paper 4) of a platen 2 changes in accordance with the detection period. That is, the longer the period becomes, the larger rotational angle (transport amount). Thus recording is performed according to data of a single line on recording paper which is transported sequentially by the amount corresponding to the detection period.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device such as a thermal recording device that records data corresponding to input data on a recording medium such as paper.

[Conventional technology]

FIG. 2 is a block diagram of a conventional thermal recording device. In the figure, 1 is a line type thermal head, 2 is a platen, and 3 is a motor for rotationally driving the platen 2. As shown in FIG. Reference numeral 4 denotes r8@paper as a recording medium, which is transported by the platen 2 in a direction perpendicular to the recording line of the thermal head 1.

A control circuit 5 performs conversion, processing, etc. to match the recording gradation characteristics of input data. A head drive circuit 6 drives the thermal spatula I-1. A motor drive circuit 7 drives the motor 3.

The input data is input to the control circuit 5, and is converted and processed to match the recording gradation characteristics. The control circuit 5 controls the thermal head 1 via the head drive circuit 6, and controls the recording paper 4.
record corresponding to the input data.

When recording for one line is completed, the control circuit 5 controls the motor drive circuit 7 to rotate the motor 3, and therefore the platen 2, by a fixed rotation angle. As a result, the recording paper 4 is transported by a certain length in a direction perpendicular to the recording line.

Thereafter, similar operations are repeated, and recording is performed line by line sequentially.

[Problem to be solved by the invention]

For example, when input data is the result of frequency analysis of a predetermined signal, this data is generated continuously from time to time. Analysis parameters for frequency analysis (e.g. analysis width, etc.)
When , the cycle of arithmetic processing for frequency analysis, and therefore the cycle of data input to the control circuit 5, changes.

Conventional devices always transport the recording paper at a constant pitch regardless of the cycle of input data. As a result, when input data whose period changes in this way is recorded, the scale of the time axis on the recording paper -1- locally changes, which is disadvantageous in that it is inconvenient to grasp changes in data over time.

Therefore, the present invention aims to make the scale of the time axis on the recording paper constant.

[Means to solve the problem]

The recording apparatus of the present invention includes a head that performs recording on a recording medium line by line in accordance with input data, a platen that transports the recording medium in a direction perpendicular to the recording line, a motor that rotationally drives the platen, and a head that records input data on a recording medium line by line. The apparatus includes a motor control circuit that detects a cycle and controls the motor so that the rotation angle of the platen changes in accordance with the cycle.

[Effect]

The cycle of input data is detected by the motor control circuit.

The rotation angle of the motor, and therefore the amount of transport of the recording medium, is changed in accordance with this cycle. That is, the shorter the period, the smaller the amount of transfer, and the longer the period, the larger the amount of transfer.

Therefore, the scale of the time axis on the recording medium is constant.

〔Example〕

FIG. 1 is a block diagram of a recording apparatus of the present invention, and parts corresponding to those in FIG. 2 are designated by the same reference numerals. In FIG. 1, ]"- is a motor rotation angle control path, which detects the cycle of input data. The motor rotation angle control circuit 11 is inserted between the control circuit 5 and the motor drive circuit 7. The other configuration of the recording apparatus of the present invention is the same as that shown in FIG.

The operation will now be explained. Input data is input to the control circuit 5 as in the case described above. After performing predetermined processing, the control circuit 5 outputs one line of data to the hen 1 drive circuit 6. The thermal head drive circuit 6 drives the thermal head 1 in accordance with this data. As a result, recording paper 4
” Second, one line is recorded.

The control circuit 5 outputs a predetermined signal to the motor rotation angle control circuit 1 when the input of data for one line is started (or completed). From this time, the motor rotation angle control circuit 11- starts counting, for example, a clock, detects the time (cycle) until the signal is manually input again, and outputs a signal corresponding to the detection cycle to the motor drive circuit 7. do. The motor drive circuit 7 drives the motor 3 for a time corresponding to the detection cycle. As a result, the rotation angle of the platen 2 (transfer of the recording paper 4, J) is changed in accordance with the detection period. That is, the longer the period, the larger the rotation angle (transfer amount).

In this way, recording corresponding to one line of data is performed on the recording paper that is sequentially transferred in increments corresponding to the detection period.

Note that the present invention can also be applied to recording devices using methods other than the thermal type.

〔Effect of the invention〕

As described above, according to the present invention, since the amount of movement of the recording medium is changed in accordance with the cycle of input data, the recording length (amount of movement) per unit time can be kept constant. Therefore, the scale of the time axis of the recording medium 2 becomes constant, making it easy to understand the data relative to time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a thermal recording apparatus of the present invention, and FIG. 2 is a block diagram of a conventional thermal recording apparatus. ] - Thermal head 2... Platen 3... Motor 4... Recording paper 5... Control circuit 6... Head drive circuit 7... Motor drive circuit 11... Motor rotation angle control Circuit patent applicant Oki Electric Industry Co., Ltd.

Claims (1)

[Claims] A head that performs recording on a recording medium line by line in accordance with input data, a platen that transports the recording medium in a direction perpendicular to the recording line, a motor that rotationally drives the platen, and a cycle of input data. and a motor control circuit that controls a motor so that the rotation angle of the platen changes in accordance with the period of detection.