JPH04272056A - Printing device - Google Patents

Abstract

PURPOSE:To efficiently perform work by providing a signal comparing means for comparing a number of signals stored in a recording paper signal memory means with a number of signals measured in a signal measuring means, in a recording paper motor control means, and knowing a residual amount or a use amount of roll paper. CONSTITUTION:A recording paper motor control means 12 is connected to a recording paper motor driving circuit 11 and a signal measuring means 13, and the signal measuring means 13 measures a number of pulse signals given for the recording paper motor control means 12 to feed out roll paper to the recording paper motor driving circuit 11. The signal measuring means 13 is connected to a signal comparing means 14 further to a recording paper signal memory means 15, previously storing a number of pulse signals necessary for feeding out recording paper from the beginning to the last, and to a display device 18. The pulse signal measured by the signal measuring means 13 is compared with the pulse signal stored in the recording paper signal memory means 15 to generate an output to the display device 18.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus, and more particularly, to a printing apparatus that uses roll paper as recording paper, and includes a mechanism for feeding out the recording paper, a recording paper motor drive circuit for driving the motor for feeding out the recording paper, and a recording paper motor drive circuit for driving the motor for feeding out the recording paper. The present invention relates to a printing apparatus having a recording paper motor control means for controlling a paper motor drive circuit.

0002

[Prior Art and Problems to be Solved by the Invention] Generally, in a printing apparatus having the recording paper motor drive circuit and the recording paper motor control means, when roll paper is used as recording paper, the remaining amount of the roll paper is Or they were not equipped with a means to know the amount used. Therefore, the user cannot know the remaining amount of roll paper set in the printing device or the amount to be used, and starts printing without knowing how much more can be printed. Depending on the amount, there was a problem that the roll paper could be partially formed.

[0003] The present invention was invented in view of the above-mentioned problem, and when a user uses a printing device, it is important to know how much more printing can be done or how much the user has used it so far. The purpose is to provide a printing device that allows you to understand the

0004

[Means for Solving the Problems] In order to achieve the above object, a printing apparatus according to the present invention uses roll paper as recording paper, and drives a mechanism for feeding out the recording paper and a stepping motor for feeding out the recording paper. A printing apparatus comprising a recording paper motor drive circuit and a recording paper motor control means for controlling the recording paper motor drive circuit, the recording paper motor control means supplying a signal to the recording paper motor drive circuit in order to send out the roll paper. signal measuring means for measuring the pulse signal;
Recording paper signal storage means for storing in advance the number of pulse signals necessary to feed out the recording paper from beginning to end, the number of signals stored in the recording paper signal storage means, and the signal measured by the signal measuring means The present invention is characterized in that it is equipped with a signal comparison means for comparing the number with the number of paper rolls to know the remaining amount or used amount of the roll paper.

[0005]

[Operation] According to the above configuration, roll paper is used as the recording paper, and the recording paper feeding mechanism, the recording paper motor driving circuit that drives the recording paper feeding motor, and the recording paper motor driving circuit that controls the recording paper motor driving circuit. A printing apparatus comprising a paper motor control means, a signal measuring means for measuring a pulse signal given by the recording paper motor control means to the recording paper motor drive circuit, and a signal measuring means necessary for feeding out the recording paper from beginning to end. a recording paper signal storage means for storing in advance the number of pulse signals, and a signal comparison means for comparing the number of signals stored in the recording paper signal storage means and the number of signals measured by the signal measuring means. Therefore, by displaying the information from the signal comparing means, when the user uses the printing apparatus, the remaining amount or used amount of the recording paper can be recognized.

[0006]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. FIG. 1 is a block diagram showing the configuration of a printing apparatus according to this embodiment. In the figure, reference numeral 11 denotes a recording paper motor drive circuit that drives a stepping motor for feeding the recording paper, and this recording paper motor drive circuit 11 is connected to the recording paper motor control means 12.
controlled by. The recording paper motor control means 12 includes:
It is connected to the recording paper motor drive circuit 11 and the signal measuring means 13, and the signal measuring means 13 measures the number of pulse signals given by the recording paper motor control means 12 to the recording paper motor drive circuit 11 to send out the roll paper. are doing. The signal measuring means 13 is connected to a signal comparing means 14, and the signal comparing means 14 further includes a recording paper signal storage means 15 for storing in advance the number of pulse signals necessary to feed the recording paper from the beginning to the end, and a display. 16, the pulse signal measured by the signal measuring means 13 and the pulse signal stored in the recording paper signal storage means 15 are compared and outputted to the display 16.

FIG. 2 is a sectional view showing a mechanism for feeding recording paper. In the figure, reference numeral 17 denotes a motor gear driven by the recording paper motor drive circuit 11. A reduction gear 18 is meshed with the motor gear 17, and a reduction gear 19 is further meshed with the reduction gear 18. Further, a platen gear 21 is meshed with the reduction gear 19, and a platen roller 20 is disposed so as to be interlocked with the platen gear 21. A thermal head 23 is disposed above the platen roller 20, and a head pressure spring 22 is disposed above the thermal head 23 in order to apply appropriate pressure to the contact area between the thermal head 23 and the platen roller 20. has been done. Further, a roll paper setting table 26 is disposed below the thermal head 23 at a position where the roll paper 25 can be supplied between the thermal head 23 and the platen roller 20. and thermal head 23
A head cover 24 is disposed between the roll paper 25 and
It is configured so that it does not come into contact with the thermal head 23 except where necessary.

When the printing apparatus operates, a pulse signal is inputted to the recording paper motor drive circuit 11 by the recording paper motor control means 12 . A recording paper motor (not shown) rotates according to the number of pulse signals. For example, when one pulse signal is input, the recording paper motor rotates a degree. The motor gear 17 rotates by a degree in conjunction with the recording paper motor, and this rotation is transmitted to the reduction gears 18 and 19 and the platen gear 21, causing the outer diameter of the platen roller 20 to move by bmm.

When the user sets the roll paper 25, the number c of pulse signals required to feed the roll paper 25 to the end is stored in the recording paper signal storage means 15 according to the length of the roll paper 25.
to be memorized. Further, when the user prints, the signal measuring means 13 measures the number d of pulse signals corresponding to the length of the roll paper 25 required for printing. The signal comparison means 14 calculates the number c of pulse signals required to feed the roll paper 25 to the end when it is set, and the number of pulse signals c required to feed the roll paper 25 when printing.
The roll paper 2
Calculate the number of pulse signals (c-d) required to send the remaining amount of 5. Based on this number of pulse signals, the remaining amount or used amount of the roll paper 25 is calculated and displayed on the display 16.

[0010] By informing the user of the remaining amount or amount of use of the roll paper 25 in this manner, when the user uses the printing device, the user can check how much more printing is possible or how much paper has been used so far. You can tell how much it has been used. Therefore, it is possible to judge in advance whether it is better to replace the roll paper 25, and it is possible to prevent the roll paper 25 from being damaged during printing, making it possible to perform the work efficiently.

Although the above embodiment describes the function of displaying the remaining amount or usage amount on the display 16, this device is not limited to the display function; By knowing the amount used,
It can also be applied to a function of prohibiting printing or temporarily storing data to be printed in memory when the roll paper 25 runs out.

0012

As described in detail above, the printing apparatus according to the present invention uses roll paper as recording paper, and includes a recording paper motor drive circuit that drives a mechanism for feeding out the recording paper and a stepping motor for feeding out the recording paper. and a recording paper motor control means for controlling the recording paper motor drive circuit, the signal measuring means for measuring a pulse signal given by the recording paper motor control means to the recording paper motor drive circuit; Recording paper signal storage means for storing in advance the number of pulse signals necessary to feed the recording paper from the beginning to the end, the number of signals stored in the recording paper signal storage means, and the number of signals measured by the signal measuring means Since the printer is equipped with a signal comparison means for comparing the printing apparatus with the printing apparatus, when the user uses the printing apparatus, he or she can know how much more printing can be done or how much the printing apparatus has been used so far. Therefore, it is possible to judge in advance whether it is better to replace the roll paper, it is possible to prevent the roll paper from being damaged during printing, and it is possible to perform the work efficiently.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a printing apparatus according to the present invention.

FIG. 2 is a sectional view showing a mechanism for feeding recording paper.

[Explanation of symbols]

11 Recording paper motor drive circuit 12 Recording paper motor control means 13 Signal measurement means 14 Signal comparison means 15 Recording paper signal recording means 25 Roll paper (recording paper)

Claims (1)

[Claims] 1. A recording paper motor drive circuit that uses roll paper as recording paper, drives a mechanism for feeding out the recording paper, a stepping motor for feeding out the recording paper, and a recording paper motor control that controls the recording paper motor drive circuit. a signal measuring means for measuring a pulse signal given by the recording paper motor control means to the recording paper motor drive circuit in order to feed out the roll paper; and a signal measuring means for feeding out the recording paper from beginning to end. a recording paper signal storage means for storing in advance the number of pulse signals necessary for the recording paper signal storage means; and a signal comparison means for comparing the number of signals stored in the recording paper signal storage means with the number of signals measured by the signal measuring means. 1. A printing device comprising: a printing device for knowing the remaining amount or usage amount of roll paper.