JPH0337968Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention performs printing according to the width of the recording paper based on the condition of the regulating member that regulates the width of the recording paper. It is used in electronic desktop calculators, etc.

[Summary of the invention] This invention uses a regulating member that variably controls the width of the introduction section of the guide member that guides the recording paper along the platen to the printing position and inserts the paper into the introduction section. In addition to regulating the width of the recording paper, the state of the regulating member is detected, and printing is performed with a printing width based on the detection result.

[Prior Art] Generally, in a printing device of a sales data processing device, receipt paper and journal paper having a paper width of about 1/2 of the total width of the platen are introduced in parallel in the width direction of the platen. Then, the printing device is driven in accordance with the registration operation, etc., and each recording paper is guided to the print head side through the platen.
Sales data and the like are printed simultaneously on receipt paper and journal paper.

[Problem to be solved by the invention] However, since this type of printer can only print on recording paper of a predetermined width,
Printing formats are limited and recording paper becomes extremely long depending on the amount of information. As a result, the printed content became difficult to see and there was a risk of it being read by mistake. Furthermore, even if the roll paper is of the same diameter, the narrower the width of the paper, the faster the consumption rate, and when printing a large amount of data such as inspection and totalization, for example, it is necessary to replace the paper frequently.

An object of the present invention is to enable selective printing on a plurality of sheets and a single sheet as appropriate.

[Means to solve the problem] The means of the present invention are as follows.

1. Various types of printing means can be used to print on paper, such as a wire dot type and a circuit type.

2. A paper introducing section, for example a guide member, that guides the paper to the printing means is arranged in a curved manner near the bottom of the platen, and its longitudinal ends are bent toward the platen to regulate the paper width.

3. When printing multiple sheets of paper side by side, the width of the paper introduction section is divided and regulated for each paper, and when printing a single sheet, the width of the paper introduction section is divided and regulated, and when printing a single paper, the division regulation is canceled. It can be attached to a part of the paper introduction part to divide and regulate the width of the paper introduction part for multiple paper introduction parts, or a part of the paper introduction part can be provided with a cutout and the member can be rotated to insert or take out the paper into the cutout. This allows for variable regulation of multiple or single sheets of paper.

4. Detection means for detecting the state of the variable restriction member, such as a microswitch, uses an optical element or the like to detect whether division restriction is in progress or release.

5 Printing control means that controls the printing area of the printing means based on the detection result of the detection means, for example, controls so that printing can be performed on each of a plurality of sheets when division restriction is in effect, and prints on a single sheet of paper when it is canceled. control like this.

[Effect] The operation of the means of the present invention is as follows.

Now, when the detection means detects that the variable regulating member is dividing and regulating the paper introduction section, based on this, the printing control means controls the printing means so that it can print on each of receipt paper and journal paper, for example. Control.

When it is detected that the restriction is being released, the printing control means controls the printing means so that it prints, for example, on the paper of the full width size of the paper introduction section.

Therefore, it is possible to selectively print on a plurality of sheets or a single sheet as appropriate.

[Example] An example applied to a sales data processing device will be specifically described below based on the drawings. The platen 1 that constitutes the printing device is placed in the direction of the arrow in the figure (clockwise).
It is rotatably supported on the shaft. A print head 3 is disposed near the platen 1 and is movable along a guide rail 2 in its width direction (axial direction).
Further, a guide member 4 having a length corresponding to the entire width of the platen and having a semicircular cross section is disposed near the bottom. This guide member 4 has a paper introduction part 4a on the opposite side of the print head 3 into which recording paper can be introduced over substantially the entire width of the platen 1, and the recording paper guided from this paper introduction part 4a is guided to the platen 1. It passes through the lower part and guides it to the printing head 3 side. Note that the paper introduction section 4a is formed by bending both longitudinal ends 4b, 4b of the guide member 4 at right angles toward the platen 1 side.

Below the guide member 4 is a drive shaft 5 for the platen 1.
A pair of paper feed rollers 7, 7 are each supported by a shaft 6 parallel to the guide member 4. Each paper feed roller 7, 7 is adapted to be driven as the paper feed roller 1 is driven. The support shaft 6 of the paper feed rollers 7, 7 has a paper introduction section 4a.
The width of the paper introduction part 4a is varied by opening and closing a part of the paper introduction part 4a,
One end portion of a regulating member 8 that regulates the width of the recording paper guided to the paper introduction section 4a is rotatably supported. That is, the regulating member 8 is constituted by a rod-shaped member that curves along the arc surface of the platen 1,
A notch 10 is formed in the center of the guide member 4 in the width direction by rotating through the shaft 6 when the handle 9 is rotated.
By going in and out, a part of the paper introduction section 4a, that is, the central part in the width direction thereof, is opened or closed. In this case, the regulating member 8
is rotated according to the operating angle of the handle 9, and when the regulating member 8 is rotated to a predetermined angle at which a part of the paper introducing section 4a is opened, the handle 9 comes into contact with the contact 11a of the micro switch 11. The microswitch 11 is turned on. The micro switch 11 detects the opening/closing state of the paper introducing section 4a by the regulating member 8, and its detection signal is input to a regulating section (not shown).
In this case, the movement area of the printing head 3, in other words, the printing area is controlled depending on whether the microswitch 11 is turned on or off.

Note that the symbols R and J indicate recording sheets introduced in parallel into the paper introducing section 4a, where the recording sheet R is a receipt sheet and the recording sheet J is a journal sheet.

Next, the circuit configuration will be explained with reference to FIG. 21 in the figure is the CPU that controls various operations
Although not shown, a key input section, a display section, etc. that constitute the sales data processing device are connected to the CPU 21 (central processing circuit). Therefore, the CPU 21 is an SR type flip-flop 22.
A print command is output to the S input terminal of the printer to set the flip-flop 22 and transfer one line of print data to the buffer register 23. The set output Q of the flip-flop 22 is
The signal is input to the CPU 21 and is also sent to the printing device as a motor drive signal to drive the platen 1 and print head 3. Note that a timing signal is outputted from the printing device according to the position of the printing head 3 and inputted to the address counter 24. This timing signal is a pulse signal that is output every time one dot is printed, and the address counter 24 counts the address data corresponding to one digit of dot. The address data is input to the character generator 25.

The buffer register 23 is capable of storing one line of print data, and executes a print data reading operation according to a read command from the CPU 21, and also according to a signal from the address counter 24. The stored contents are sent to the character generator 25 one digit at a time. The character generator 25 exchanges and outputs character information corresponding to input data in synchronization with the output of the address counter 24, and sends it to the print head section 3.

On the other hand, from the printing device side, every time printing for one line is completed, a printing end signal is sent to the flip-flop 22.
is applied to the R input terminal of the flip-flop 22.
to reset. In addition, micro switch 11
The detection signal from is sent to the CPU 21. In this case, in response to the detection signal, the CPU 21 causes printing to be performed on recording paper having a width corresponding to the entire width of the paper introduction section 4a, or the CPU 21 causes the paper introduction section 4a to print on recording paper having a width corresponding to the entire width of the paper introduction section 4a. Controls whether to print on each recording paper approximately corresponding to .

Next, the operation of the above embodiment will be explained. First, when the regulating member 8 is closed to the paper introducing portion 4a, that is, when the regulating member 8 has entered the notch 10 of the guide member 4 and is in the state shown in FIG. 1, the entire width of the paper introducing portion 4a is are each divided into approximately 1/2 width by the regulating member 8. in this case,
As shown in FIG. 1, the handle 9 is removed from the contact 11a of the microswitch 11, and the microswitch 11 is in the OFF state. In this state, receipt paper R and journal paper J each have a width that is approximately 1/2 of the total width of the paper introduction section 4a.
is introduced into the paper introduction section 4a, each paper R,
J enters while being guided by the guide member 8, is sent to the print head 3 side through paper feed rollers 7, 7, and is conveyed in respective predetermined directions. At this time,
The CPU 21 is connected to the input micro switch 11.
As a result of controlling the printing operation in response to the off signal of , sales data and the like are printed on the receipt paper R and the journal paper J, respectively. FIG. 3A shows the printing areas in this case, and sales data and the like are printed in the printing area RP for the receipt paper R and the printing area JP for the journal paper J, respectively. Note that in the figure, a shaded portion X is a non-printing area corresponding to the regulating member 8.

FIG. 4A shows a state in which a part of the paper introduction section 4a is closed by the regulating member 8. In this state, when the handle 9 is rotated, the regulating member 8 is closed.
is rotated clockwise, as shown in FIG. 4B. As a result, a portion of the paper introduction section 4a is unblocked, and its width becomes approximately equivalent to the entire width of the platen 1. At this time, the handle 9 comes into contact with the contact 11a of the microswitch 11, and the microswitch 11 is turned on. In this state, when a receipt or journal recording paper having a width approximately equivalent to the full width of the paper introduction part 4a, or a recording paper for inspection or settlement report is introduced into the paper introduction part 4a, the same as in the above case occurs. , guide member 8
The paper is sent to the print head 3 side through the inside, and is conveyed in a predetermined direction. At this time, the CPU 21 controls the printing operation according to the input ON signal of the microswitch 11, so that the sales data and the like are printed in an area approximately corresponding to the entire width of the recording paper. Figure 3B
indicates the printing area in this case, which is more than twice as large as the individual printing area shown in FIG. 3A.

Although the regulating member 8 in the above embodiment can be rotated by operating the handle, it may be a separate member that is detachably attached to the guide member 4, and in short, the width of the paper introduction section can be variably controlled. It is fine as long as it is something.

Further, in the above embodiment, one regulating member 8 is disposed in the width direction of the platen 1, but if two or more regulating members are disposed, the paper introduction section 4a can be divided into more fine sections.

In addition, although a micro switch was used in the embodiment as a means for detecting the state of the regulating member,
The detection means is not limited to this, and may be an optical detection means using a light emitting element and a light receiving element, for example.

[Effects of the invention] According to this invention, it is possible to print on recording paper that has a width approximately equivalent to the full width of the platen, or on each recording paper that has a width that divides the entire width of the platen into multiple parts. . As a result, when there is a large amount of information to be printed, by using recording paper with a wide paper width, the printing style can be adjusted to match the paper width, making it possible to print extremely easily. Furthermore, by using recording paper with a wide paper width, the consumption speed of the recording paper can be slowed down, which has the excellent effect of reducing the number of times the paper needs to be replaced.

[Brief explanation of the drawing]

The drawings show an embodiment in which this invention is applied to a sales data processing device, and FIG. 1 is a perspective view of a printing device;
Figure 2 is a circuit configuration diagram, Figure 3A is a diagram showing the printing area for two types of narrow recording paper, Figure 3B is a diagram showing the printing area corresponding to wide recording paper, and Figure 4 is a diagram showing the printing area for two types of narrow recording paper.
Figures A and B are schematic cross-sectional views illustrating the operation of the printing device. 1... Platen, 3... Print head, 4... Guide member, 4a... Paper introduction section, 8... Regulating member,
11...Micro switch, 21...CPU, R
...Receipt paper, J...Journal paper.

Claims (1)

[Scope of utility model registration request] A printing means that prints on paper, a paper introduction section that guides the paper to this printing means, and when printing multiple papers side by side, the width of this paper introduction section is divided and regulated for each paper, and a single paper is A variable regulating member for canceling the division regulation when printing, a detecting means for detecting the state of the variable regulating member, and a printing control means for controlling the printing area by the printing means based on the detection result of the detecting means. A printing device comprising: