JPS59165673A - Paper feed controlling system - Google Patents

Abstract

PURPOSE:To provide the titled system by which errors due to variations in operating conditions can be easily corrected without the need to adjust a paper- feeding mechanism part, wherein the printing starting position relative to the end of the paper can be finely adjusted by a group of switches. CONSTITUTION:A controlling part 5 for feeding the paper drives a pulse motor 7 for driving a paper-feeding roller through a motor driver 6. The output from a sensor 2 is read through a receiver 9, and when the end of the paper is detected by the sensor 2, the pulse motor 7 is stopped. Information set through the switch group 13 is read through a switch group receiver 12, and the direction and the amount of movement of the paper is calculated on the basis of the thus set information. A number of pulses correspondig to the movement amount is output to the pulse motor 7 through the motor driver 6, and the paper is moved in a supplying direction or a discharging direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a paper feed control force type, and particularly relates to an improvement in a control method for a paper feed mechanism in a single-dust printer.

[Prior art]

FIG. 1 shows a schematic structure of the paper feeding mechanism of a ticket printer. The paper feed mechanism includes a paper feed roller 1 driven by a pulse motor, and a sensor 2 for detecting the edge of the paper.

The print head 3 is arranged between the paper feed roller 1 and the sensor 2.

In the conventional control method of the paper feed mechanism section described above,
The paper feed roller 1 is driven to feed the paper, and when the edge of the paper is detected by the sensor 2, the feeding is stopped and the position of the rad 3 becomes the first printing position for printing on the paper at that time, so the edge of the paper is detected. The distance to the first printing position depends on the accuracy of the mounting of the sensor 2 and print head 3. Therefore, it is necessary to adjust the paper feed mechanism, and it is also impossible for the operator to correct errors caused by fluctuations in the usage conditions of the cut-sheet printer.

[Purpose of the invention]

An object of the present invention is to eliminate the above-mentioned conventional errors, and to provide a paper feed control that eliminates the need for adjustment of the paper feed mechanism and allows an operator to easily correct errors caused by fluctuations in operating conditions. The purpose is to provide a method.

[Detailed description of the invention]

The present invention is characterized by allowing the operator to finely adjust the distance from the paper edge to the first printing position.
A group of switches for setting the amount and direction of movement of the paper due to the rotation of the paper feed roller is connected to the control unit, and when paper is fed, after the end of the paper is detected by a sensor, the paper feed roller is driven according to the set value of the switch group. The purpose is to move the paper back and forth in the force direction.

[Embodiments of the invention]

Next, embodiments of the present invention will be described in detail using the drawings.

FIG. 2 is a block diagram of a cut-sheet printer for realizing a paper feed control system according to an embodiment of the present invention using the paper feed mechanism shown in FIG. 1, and FIG. FIG. 4 shows a time chart.

In FIG. 2, the functions and operations of each block will be explained. The control unit 5, which includes a microconbeater and a memory for storing control programs, includes a motor driver 6 which generates drive pulses for the pulse motor 7 for driving the paper feed roller, and a print head driver 8 which drives the print head 3.
, a sensor receiver 9 that receives signals from the sensor 2;
．． A motor driver 10 that generates drive pulses for the carrier drive pulse motor 11 and a switch group receiver 12 that receives setting information signals of the switch group 13 are connected to each other.

In order to feed the paper, the control unit 5 drives the paper feed roller driving pulse motor 7 via the motor driver 6.

Next, the output of the sensor 2 is read through the sensor receiver 9, and when the sensor 2 detects the end of the paper, the pulse motor 7 for driving the paper feed roller is stopped. Here, the setting information of the switch group 15 is read through the switch group receiver 12, the moving blade direction and the amount of movement of the paper are calculated based on the setting information, and the number of pulses corresponding to the amount of movement is sent to the motor driver 6. The signal is outputted to the paper feed roller drive pulse motor 7 via the .

Next, the flow of control during paper feeding will be explained with reference to FIG. When feeding the paper, the control unit 5 drives the pulse motor 7, rotates the paper feed roller, and feeds the paper. At the same time, the control section 5 monitors the state of the sensor 2, and stops driving the pulse motor 7 when the sensor 2 detects the edge of the paper. Next, the setting information of the switch group 15 is read, and based on this information, the amount of movement for fine adjustment of the leading print position is calculated, and the pulse motor 7 is given a number of pulses commensurate with the direction of movement and the amount of movement. is given to complete the paper feeding operation.

Further, the timing of paper feeding will be explained with reference to FIG. During paper feeding, a drive pulse is output to the pulse motor 7 while the output of the sensor 2 is at a low level, and when the output of the sensor 2 becomes a high level, the drive pulse output is stopped. Subsequently, when the control section 5 finishes reading the setting information of the switch group 13 and calculating the amount of movement, it again outputs a number of drive pulses based on the calculation results to the pulse motor 7 to move the paper.

It should be noted that the present invention is not limited to the configuration of the above-described embodiments, and may be modified without departing from the gist of the present invention. For example, the setting information from the switch group 15 can take a modified configuration such as a parameter input from a keyboard in a terminal device including a keyboard, display, etc. in addition to a single-action printer.

〔Effect of the invention〕

According to the present invention, since the leading printing position on the edge of the paper can be finely adjusted using the switch group, there is no need to adjust the paper feeding mechanism during production, and the environmental conditions of the cut-sheet printer can be adjusted.
This has the effect that the operator can correct errors caused by aging of the paper feed mechanism, expansion and contraction of the paper, and print quality.

[Brief explanation of drawings]

FIG. 1 is a schematic structural diagram of the paper feed mechanism of a cut-sheet printer, FIG. 2 is a block diagram of a cut-sheet printer that realizes a paper feed control force type according to an embodiment of the present invention, and FIG.
The figure is an operation flowchart, and FIG. 4 is a time chart. 1...Paper feed roller 2...Sensor 6...Print head 5...Control unit 6.10...Motor driver 7.11...Pulse motor 8...Print head driver 9.12 ...Receiver 13...Switch Group Attorney Akio Takahashi 79 ヰtU2J Figure 2 Figure 30 Kaya Δ Figure

Claims (1)

[Claims] 1. A paper feed roller for conveying printing paper. In the paper feed control type of a cut-sheet printer that has a paper feed mechanism consisting of a sensor for detecting the paper edge and a paper transport path, a group of switches are provided to set the amount and direction of paper movement due to the rotation of the paper feed roller. When feeding paper, after the sensor detects the edge of the paper, the paper feed roller is driven according to the settings of the switch group to move the paper back and forth in the force direction, making it possible to finely adjust the leading printing position from the edge of the paper. A paper feed control force type that does not require adjustment of the mechanical part and at the same time allows the operator to make settings according to usage conditions.