JPH04112060A - Feed controller for printer - Google Patents

Abstract

PURPOSE:To make it possible to change a feeding by providing control means for changing the feeding speed in feed means when a time exceeding a time predetermined by count means for counting input time by a feed key is counted. CONSTITUTION:It is determined whether a pressing of a journal paper feed key 101 is continued or not. When the pressing of the key is completed, a high speed feeding is stopped. On the other hand, when the pressing of the key is continued, it is determined whether an output of a print detecting sensor 9 is inverted between white and black at a predetermined cycle in order to detect an end of the printing. When the printing is completed, the output of the print detecting sensor 9 becomes unchangeable and a white level is continued. In such a state, the feeding is stopped. Thus, when the journal paper feed key is pressed during a transaction, a printer feeds papers at low speed. When the pressing time exceeds 1.5 seconds, the papers, are fed at high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed control device that controls paper feed in a printing device.

[Prior Art and Problems to be Solved by the Invention] As paper feeding devices for printers in conventional electronic cash registers (hereinafter referred to as ECR), there are known two types: one that feeds paper at high speed and one that feeds paper at low speed. However, there was no ECR that could arbitrarily switch between high-speed paper feed and low-speed paper feed.

For this reason, ECRs that feed paper at low speeds have a problem in that it takes too much time to change the roll paper, while ECRs that feed paper at high speeds have the problem that when an operator writes notes in a journal, it takes too much time to change the roll paper. Since it is difficult to stop the journal paper at this position, there is a problem in that the hood of the printer must be opened and the take-up shaft must be manually wound up or rewound.

In addition, when replacing the roll paper for printing in a conventional ECR, the tip of the new roll paper is attached to the take-up shaft by hand, and the take-up shaft is rotated 2 or 3 times so that the roll paper can be wound without any trouble.
It is necessary to wind up the roll paper a little by rotating it three times.
The operation was complicated.

Therefore, an object of the present invention is to provide a paper feed control device for a printing device that can change the paper feeding speed, and also to provide a paper feed control device for a printing device that can automatically load roll paper for printing. An object of the present invention is to provide a paper feed control device.

[Means for Solving the Problem] The invention according to claim (1) includes: a paper feeding means for feeding printing paper at a predetermined speed; a paper feeding key for instructing paper feeding by the paper feeding means; comprising: a timer for measuring the key input time of the paper feed key; and a control means for changing the paper feed speed of the paper feeder when the timer measures a time that exceeds a predetermined time. This is a paper feed control device for a printing device.

The invention according to claim (2) is provided for winding up roll paper for printing, and includes a winding means to which the leading end of the roll paper can be attached, a paper feed key for instructing paper feed, and a paper feed key for instructing paper feed. A paper feeding means that operates to feed the roll paper in the direction of the winding means in response to a key signal from a feed key, and a paper feeding means that operates to feed the roll paper toward the winding means, and the movement of the roll paper until the leading end of the roll paper is attached to the winding means. This is a paper feed control device for a printing device, which includes a detection means for detection and a control means for stopping paper feeding of a roll paper by a paper feeding means in response to the output of the detection means.

[Operation] In the invention according to claim (1), when the paper feed key is pressed for a short time, paper is fed at a normal speed, and when the paper feed key is pressed continuously for a long time, the paper is fed at a normal speed. The paper is fed at a speed different from the speed of .

In the invention according to claim (2), the printing roll paper is sent toward the winding means by operating the paper feed key. and,
The detection means detects the movement of the roll paper until the leading end of the roll paper is attached to the winding means, and the end of the attachment of the roll paper is detected. When it is detected that the roll paper is attached to the winding means, feeding of the roll paper is stopped.

[Embodiment of the Invention] A printing device built into an ECR will be described below as an embodiment of the invention, but this invention is not limited to the ECR, but can be applied to any printing device that uses roll paper for printing. It should be pointed out in advance that this can also be applied.

FIG. 1 is a diagram showing the internal structure of an ECR to which an embodiment of the present invention is applied. As shown in FIG. 1, a roll-shaped journal paper 1 is used in an ECR according to an embodiment of the present invention. A door 3 for replacing the journal paper 1 is provided on the side of the housing 2 of the ECR. A printer 4 is provided within the housing 2 to print transaction data on the journal paper 1. The printer 4 includes a paper feed motor 41 for feeding the journal paper 1 and a print head 42 for printing.

Further, a winding drum 5 for winding up the journal paper 1 is provided within the housing 2 . A loading detection sensor 6 is provided in connection with the winding drum 5 to detect when the journal paper 1 is automatically loaded. A method for detecting automatic loading will be explained later in FIG. A writing table 7 for an operator to write notes on the journal paper 1 is provided between the winding drum 5 and the printer 4, and a journal paper writing window that can be opened and closed in relation to the writing table 7 is provided. 8 is provided.

Further, the writing table 7 is provided with a print detection sensor 9 for detecting the printing state of the journal paper 1. A keyboard 10 is provided below the journal paper writing window 8 for inputting data regarding transactions.

FIG. 2 is a diagram showing the key arrangement of the keyboard 10 shown in FIG. 1. In FIG. 2, the keyboard 10 includes a journal paper feed key 101 for instructing to feed the journal paper 1 in the winding direction of the winding drum 5, and a journal paper feed key 101 for instructing to feed the journal paper 1 in the opposite direction. a return key 102 for instructing to do so, a department key 103 for inputting the department code of the product during registration processing, and a numeric keypad 104 for inputting the price data of the product. , VOID to invalidate data
key 105.

FIG. 3 is a diagram showing a state in which a printed journal is being fed on the journal writing table shown in FIG. 1. Third
In the figure, a journal paper 1 has a product department number and price data printed on each line. From the 1st line to the 9th line, the data has been entered without any mistakes, but
There is probably a mistake in the data entered on line 10. In this case, when the VOID key 105 shown in FIG. 2 is pressed, the data input immediately before will be invalidated. To indicate that the data is invalid, journal paper 1 has the first
Printing of the 1st line and the 12th line is performed. The area S included in the 11th line is an area for an operator who makes an input error to write a memo or sign. In line 13 of the plan,
The correct data entered is printed. A print detection sensor 9 provided on the journal writing table 7 detects whether or not print data is printed.

FIG. 4 is a diagram for explaining the detection output of the print detection sensor shown in FIG. 3. The print detection sensor 9 is composed of, for example, a photodiode, and detects reflected light. Therefore, when the journal paper 1 is not loaded, a signal corresponding to "black" (hereinafter referred to as a black level signal) is output, and the journal paper 1 is displayed on the print detection sensor 9.
When a printed area is detected, the reflected light is detected and a signal corresponding to "white" (hereinafter referred to as a white level signal) is output, and when a printed area is detected, a black level signal is output. In this way, the print detection sensor 9 detects the presence or absence of the journal paper 1 and also detects whether print data is printed on each line.

FIG. 5 is a diagram for explaining a method for detecting the loading of journal paper using the loading detection sensor shown in FIG. 1. FIG. In FIG. 5, the loading detection sensor 6 includes, for example, six photodiodes.

Journal paper 1 is sent in a curled state. As paper feeding progresses, the leading edge position of journal paper 1 changes from P1→
It moves like P2→P3→P4→P5. As the leading edge of the journal paper 1 moves from P1 to P5, the journal paper 1 traverses the front surface of the photodiodes 62, 63, 64 and 65 at the arrangement rate. Then, when the leading edge of the journal paper 1 is automatically attached to the winding shaft 51 of the winding drum 5 and wound onto the winding drum 5, the journal paper 1 is moved to the photodiode 65, 64, contrary to the above case. .6
3 in this order, and finally crosses the front surface of the photodiode 62. When the journal paper 1 crosses the front surface of the photodiode, the output of the photodiode changes because it blocks light. Therefore, it is possible to detect that the journal paper 1 is loaded based on the detection output of each photodiode.

FIG. 6 is a schematic block diagram showing the main electrical configuration of an embodiment of the present invention. In FIG. 6, the ECR is provided with a CPU II for controlling paper feeding. C.P.
The UI 1 includes the above-mentioned keyboard 10 as its main configuration.
9 paper feed motor 41. Print head 42. In addition to the print detection sensor 9 and the loading detection sensor 6, the ROM 12. RAM
13 and timer 14 are connected. The ROM 12 stores an operating program of < CPUI 1 based on the flowcharts shown in FIGS. 8A to 8B, which will be explained later.

The RAM 13 includes an area for storing the appearance of the print detection sensor sampled at regular intervals.

The timer 14 has a function of measuring the key press time of the journal paper feed key 101 of the keyboard 10.

FIG. 7A is a diagram showing the output waveform of the print detection sensor, etc. when the journal paper feed key shown in FIG. FIG. 3 is a diagram showing output waveforms of a print detection sensor, a loading detection sensor, and the like.

FIGS. 8A and 8B are flowcharts for explaining the operation of one embodiment of the present invention.

Next, the operation of one embodiment of the present invention will be described with reference to FIGS. 1 to 8B. First, the operation when changing the paper feed speed will be explained.

When the journal paper feed key 101 is pressed in step S1, the return feed key 1 is pressed in step S2.
It is determined whether or not 02 is pressed at the same time as the paper feed key. If both keys are pressed,
Proceeding to step S5, the journal paper 1 is fed in the direction of rewinding by one line.

On the other hand, if only the journal paper feed key 101 is pressed, the process advances to step S3, where it is determined whether a single key input has been made. Here, a single input refers to a case where the key press time is, for example, 200 m5 or less. As shown in FIG. 7A, when a single key input is performed, the process advances to step S4, and the journal paper is fed by one line. The direction of paper feeding at this time is from the printer 4 to the winding drum 5. The output of the print detection sensor 9 is at a black level when a printed line is on the sensor, and at a white level when a margin between printed lines is on the sensor during paper feeding. Note that when paper is fed, rotational force is applied to the winding drum 5 so that a constant tension is applied to the roll paper 1.

If it is determined in step S3 that it is not a single input, the process advances to step S6, and the memo IJ M 1 to
In order to sequentially store the output of the print detection sensor 9 in Mn,
The value of n is set to "1m.

In step S7, the output of the print detection sensor 9 is read. In step S8, the read output value is stored in the memory Mn.
is memorized. In this case, since n=1, it is stored in the memory M1. Subsequently, in step S9, 1
Paper is fed only by line.

Subsequently, in step SIO, it is determined whether or not the output of the print detection sensor 9 changes during this paper feeding. If the output of the print detection sensor 9 changes during paper feeding, this means that transaction data is printed line by line, and therefore it is determined that the paper feeding operation is occurring during a transaction.

On the other hand, if there is no change in the output of the print detection sensor 9 while paper is being fed, this means that either journal paper is not loaded or paper is being fed without printing. be. In order to determine which state it is in, in step Sll it is determined whether the stored contents of each memory M are at the black level.

If the stored content of each memory M is at a black level, it is determined that the journal paper is being loaded, and if the stored content of each memory M is at a white level, it is determined that the paper is being fed without printing. be done. In the present case, it is assumed that paper is being sent during a transaction.

Subsequently, in step S12, it is determined whether or not the journal paper feed key 101 is continued to be pressed.

If the key press is not continued, the operation ends, but if the key press is continued, the process advances to step S13, where it is determined whether the key press time exceeds 1.5 seconds.

If the key press time does not exceed 1.5 seconds, the value of n is incremented by 1 in step S14, and the process returns to step S7. The operations of steps S7 to S14 are repeated until the key press time exceeds 1.5 seconds. During this time, the printer 4, as shown in FIG. 7A,
Feed paper at low speed.

When the pressing time of the journal paper feed key 101 exceeds 1.5 seconds, the rotational speed of the paper feed motor 41 built into the printer 4 is increased in step S15, and high-speed paper feeding is started. Subsequently, in step S16,
It is determined whether or not the paper feeding operation is during a transaction. In this case, since this is a paper feeding operation during a transaction, step S
16, the process advances to step S17. In step S17,
The output of the print detection sensor 9 is sampled at a predetermined period during paper feeding. This predetermined cycle is set, for example, at the timing of sampling each print line and the central portion between the print lines. i.e. the print line.

Sampling is performed in the order of margins and printed lines.

The sampling result of the output of the print detection sensor 9 is the 7th A.
As shown in the figure, the waveform is synchronized with the operation of the printer 4 during high-speed paper feeding operation.

Subsequently, in step S18, journal paper feed key 1 is pressed.
It is determined whether or not the pressing of the key 01 is continued, and if the pressing of the key has ended, the process advances to step S20;
High speed paper feed is stopped.

On the other hand, if the key continues to be pressed, in order to detect the end of printing, it is determined in step S19 whether the output of the print detection sensor 9 is inverted in black and white at a predetermined period. If printing is completed, the output of the print detection sensor 9 will not change and the white level will continue. In this state, printing has been completed, so paper feeding is stopped in step S20.

As described above, in this embodiment, when the journal paper feed key is pressed during a transaction, the printer performs low speed paper feed, and when this press time exceeds 1.5 seconds, high speed paper feed is performed.

Next, the operation when loading journal paper will be explained.

Open the door 3 of the ECR housing 2, insert a new journal paper, and set it in the printer 4.

In this state, when the journal paper feed key 101 is pressed, the process advances from step S1 to step S2, and it is determined whether or not the journal paper feed key 101 is used in combination with the return feed key 102. In the present case, only the journal paper feed key 101 is pressed, so the process advances to step S3. In step S3, it is determined whether the input is a single input. In this case, the journal paper feed key 101 continues to be pressed for a relatively long time in order to load the journal paper. Therefore, step S3
The process then proceeds to step S6. In step S6, the value of n is set to 1, and in step S7, the output of the print detection sensor 9 is read. At this time, the print detection sensor 9
Since the journal paper 1 has not been sent to the position, the output of the print detection sensor 9 is at the black level. Therefore, in step S8, the black level is stored in the memory M1. Subsequently, in step S9, paper is fed by one line.

Next, in step SIO, it is determined whether or not the output of the print detection sensor 9 has changed during paper feeding.However, until the journal paper 1 is fed to the position of the print detection sensor 9, Since the output of continues the black level,
It is determined that the output does not change. Therefore, the process advances from step SIO to step Sll, where it is determined that the memory M1 is at the black level. Next, in step SL2, it is determined whether or not the journal paper feed key is continued to be pressed, and then, in step S13,
It is determined whether the key press time exceeds 1.5 seconds. If it is 1.5 seconds or less, the process advances to step S14, where n is incremented by 1. In this way, steps 87 to S14 are repeated, and until the key press time exceeds 165 seconds, low-speed paper feeding is performed as shown in FIG. 7B.

When the pressing time of the journal paper feed key 101 exceeds 1.5 seconds, the process advances to step S15, and high-speed paper feeding is started. Subsequently, in step S16, it is determined whether paper feeding is in progress or not, but in this case, since the memories M1 to Mn are all at the black level in step S11 immediately before starting high-speed paper feeding, It is determined that the paper is not being sent during a transaction. Therefore, step 8
16, the process proceeds to step S21. In step S21,
It is determined whether the output of the print detection sensor 9 has changed from a continuous black level to a white level.

When the journal paper 1 is fed and the leading edge of the journal paper 1 reaches the position of the print detection sensor 9, the output of the print detection sensor 9 changes from the black level to the white level due to the reflected light. After this change occurs, in step S22,
The output of the loading detection sensor 6 is checked. When the journal paper 1 passes the writing table 7 and is further fed in the direction of the take-up drum 5, as explained in FIG. detected. When the journal paper 1 is automatically attached to the winding shaft of the winding drum 5 and wound onto the winding drum 5, the photodiodes 65, 64, 63, and 62 detect that the light is blocked in this order. Ru. When such a change in output is detected, it is determined that loading has been completed. If loading completion is detected in step S23, the process advances to step S20, and high-speed paper feeding is stopped.

In this way, simply by pressing the journal paper feed key 101, paper feeding, loading of journal paper, and stopping of paper feeding are performed.

[Effects of the Invention] As described above, according to the present invention, paper is fed at the normal speed when the paper feed key is pressed for a short time, and when the paper feed key is pressed continuously for a long time. Since the paper is fed at a speed different from the normal speed, the paper feeding speed can be changed as required, improving operability. Further, since journal paper is automatically loaded simply by pressing the paper feed key, labor can be saved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the internal structure of an ECR to which an embodiment of the present invention is applied. FIG. 2 is a diagram showing the key arrangement of the keyboard shown in FIG. 1. FIG. 3 is a diagram showing a state in which a printed journal is being fed on the journal paper writing table shown in FIG. 1. FIG. 4 is a diagram for explaining the detection output of the print detection sensor shown in FIG. 3. Solution 5 FIG. 5 is a diagram for explaining a method of detecting the loading of journal paper using the loading detection sensor shown in FIG. 1. FIG. 6 is a schematic block diagram showing the main electrical configuration of an embodiment of the present invention. FIG. 7A is a diagram showing the output waveform of the print detection sensor, etc. when the journal paper feed key shown in FIG. 2 is pressed. 7B154 is a diagram showing output waveforms of the print detection sensor, loading detection sensor, etc. when journal paper is loaded onto the winding drum. Figures 8A and 8B
The figure is a flow diagram for explaining the operation of an embodiment of the present invention. In the figure, 1 is a journal paper, 4 is a printer, 5 is a winding drum, 6 is a loading detection sensor, 9 is a print detection sensor,
10 is a keyboard, 11 is a CPU. 12 is a ROM, 13 is a RAM, 14 is a timer, 41 is a paper feed motor, 51 is a winding shaft, 61.62°63.64.
65 and 66 are photodiodes, and 101 is a journal paper feed key. 1st ECRn@di, Figure 2 Figure 2 Key self 1 Figure 3: v-i+L ta Bloch diagram Figure 8A

Claims (2)

[Claims] (1) A device for controlling paper feeding of a printing device, comprising a paper feeding means for feeding the printing paper at a predetermined speed, a paper feeding key for instructing the paper feeding means to feed the paper, and the paper A timer for measuring a key input time of a feed key, and a control means for changing a paper feeding speed of the paper feeding means when the timer measures a time exceeding a predetermined time. Also, the paper feed control device for the printing device. (2) A device for controlling paper feeding of a printing device, which is provided for winding up a roll paper for printing, and includes a winding means to which the leading end of the roll paper can be attached, and a winding means for instructing paper feeding. a paper feeding key; a paper feeding means that operates to feed the rolled paper toward the winding means in response to a key signal from the paper feeding key; a leading end of the rolled paper is attached to the winding means; A printing device comprising: a detection means for detecting the movement of the roll paper until it is moved; and a control means for stopping the paper feeding of the roll paper by the paper feeding means in response to the output of the detection means. Paper feed control device.