JPH01320174A - Paper feed controller in printer - Google Patents

Abstract

PURPOSE:To simply and accurately conduct a fine printing position correction by recognizing a required execution format from among a line feed paper feed, a fine paper feed, and a continuous high-speed paper feed and controlling an action according to the recognized format. CONSTITUTION:At the time of recognizing that with respect to an operation signal manually issued from an operation means by an operator a line feed paper feed is requested by an operation means 1, a control means 4 imparts control information for feeding recording paper by the amount of one line to a drive control means 6, and the action f a paper feed drive means 5 is controlled by the drive control means 6. On the other hand, when recognizing that a fine paper feed is requested by an operation means 2, the control means 4 imparts control information for feeding recording paper with a predetermined fine pitch smaller than the height of one line to the drive control means 6. At the time of recognizing the request of a continuous high-speed paper feed by an operation means 3, the control means 4 imparts control information for setting a speed of feeding recording paper higher than a paper feed speed in the line feed paper feed to the drive control means 6, and the action of the paper feed drive means 5is controlled by the drive control means 6.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a paper feed u and a control device for a printer.

[Prior art]

Conventionally, blinking has had a function of moving the recording paper forward or backward in order to correct the print position.

Generally, both the front and back sides of the recording paper are held between a pair of paper feed rollers, and the paper feed rollers are rotated by a pulse motor or the like to insert and transport the recording paper into the gap between the platen and the print head. . Conventionally, the minimum amount by which the recording paper is transported has been set to a pitch corresponding to the width of one line. In other words, in conventional printers, the recording paper is moved one line at a time in accordance with the number of times the transfer key on the imitation panel is pressed. Note that there is also a device that allows multiple lines to be continuously fed at high speed by continuing to press the transfer key.

In such conventional printers, for example, when forward or backward movement of about 2 to 3 lines is performed, the forward movement key or backward movement key is pressed several times, but when a large number of lines, such as 10 or more lines, are to be moved, When carrying out the transfer, pressing down the transfer key once as described above is too time consuming, so the recording paper is continuously transferred by keeping the transfer key depressed.

[Problem to be solved by the invention]

By the way, when printing several lines of character strings in each area between the ruled lines, such as a slip in which a plurality of ruled lines Al-8 are inserted at certain fixed intervals, as shown in FIG. 6 fa+, for example. For example, as shown in FIG.
, ~A, and the print character string B may be printed in an overlapping manner. In such cases, it is necessary to correct the print position, but with conventional printers, the minimum transfer amount is set to one line width, so it is difficult to correct the print position correctly by operating the transfer key. In that case, the operator had to manually turn the platen knob to correct the printing position, which was troublesome.

Further, even when adjusting the print position by feeding a large amount of paper, the paper must be continuously fed by one line by continuously pressing the transfer key, which is time consuming and troublesome.

The present invention was devised in view of the above circumstances, and an object of the present invention is to enable minute print position corrections to be performed accurately in the front vehicle.

[Means to solve the problem]

In order to achieve such an object, the present invention has the following configuration.

That is, the paper feed control device for a printer according to the present invention, as shown in FIG. 1, feeds paper of one line width 1! No. 11 to instruct ij et al. to feed line feed paper.
a second mulberry cropping means 2 which, when operated in combination with the mulberry cropping means 1 and the first operating means, instructs paper feeding in predetermined micro-pinch increments smaller than one line width; and an eleventh mulberry cropping means. When operated in combination, the third scraping means 3 instructs to feed continuous paper at a higher speed than the line feed, and depending on the presence or absence of operation signals from each operating means, feed the line feed,
A control means 4 that recognizes which execution form is requested, micro paper feeding or continuous high speed paper feeding, and sends control information according to the recognized form; Feed drive means 5
The drive control means 6 controls the operation of the drive control means 6.

[Effect]

The effects of the configuration of the present invention are as follows.

When the operator manually operates the operating means 1 to 3, the operating means 1 to 3 output an operating signal, and the control means 4 determines which paper feeding mode the operating signal requests (U2!). ! L. Send control information according to the recognized form. Based on the control information from the control means 4, the drive control means 6 controls the operation of the paper feed drive means 5.

For example, when the control means 4 recognizes that the request is to feed a new line paper, it provides control information for setting the recording paper transport amount to one line to the drive control means 6, and the drive control means 6 controls the paper feed drive means 5. Control behavior. Further, when it is recognized that the request is for a minute paper feed, control information is given to the drive control means 6 to set the recording paper conveyance amount to a predetermined minute pitch smaller than one line width,
Furthermore, if it is recognized that the request is for continuous high-speed paper feeding, control information for making the recording paper transport speed faster than the paper feeding speed for line feed paper feed is given to the drive control means 6, and the drive control means 6 feeds the paper. The operation of the drive means 5 is controlled.

By selecting the paper feed amount as needed in this way, when the paper feed amount is large, continuous high-speed paper feed can be used to quickly feed the paper, and since it is difficult to judge the stopping time, it is possible to stop at an appropriate point. If the paper is then finely adjusted by finely feeding the paper, the printing position can be adjusted in small increments.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. An embodiment of the present invention is shown in FIGS. 2 to 5.

Figure 2 is a partial cross-sectional view of the printer.
0 is a platen, and a print head 11 is arranged at a position opposite to this platen 10, and this print head 11 includes a guide bar 12a arranged parallel to the longitudinal direction of the platen 10,
It is mounted on a carriage 13 that can be moved repeatedly along the line 12b.

A pair of paper feed rollers 14a are provided on both sides of the recording paper transport direction centered on the platen 10 and the printing area 11.

14b are disposed, respectively, and a bin tractor 15 for transporting and guiding the continuous paper P1 is disposed near one of the paper feed rollers 14a. Reference numeral 16 denotes a guide plate for manually feeding paper sheets 22, etc. arranged almost horizontally, and above it various types of paper sheets P such as slips and envelopes.

A stuff force 17.18 for accommodating P4 in an open state is provided in an inclined shape fG. The sheets Ps and P- within this stiff force 17.18 are sent out by the sending roller 19.20.

FIG. 3 is a block diagram of the configuration of the printer. In the figure, 21 is a printer control central processing unit (hereinafter simply CPU).
), and this CPU 21 is called il, IJ in FIG.
It functions as control means 4. The CPU 21 includes a ROM 22 in which various control programs for printing and programs for controlling operations according to the flow chart shown in FIG. 5 are written, an area for temporarily storing print data from the host computer 23, and a line feed paper feed. A RAM with at least a battery-backed area that stores each paper feed amount in the minute paper feed mode and in the minute paper feed mode.
24 are connected. Furthermore, a host computer 23 and an operation unit 25 are connected to the CPU 21 via an interface 26, and the print head 1
11 Paper feed roller drive motor 27. Carriage drive motor 28. The delivery roller drive motor 29 and the drive mustaches 30 to 33 that operate them are connected to the interface 34.
connected via. The paper feed roller driving motor 27 is a pulse motor, and is capable of transporting the recording paper by 1/120 inch by applying a signal of 1 pulse, and the width of one line is set to 1/6 inch. 1 in case
A 20-pulse signal is required to transfer a pinch of line width.

Therefore, in this embodiment, the paper feed amount in the line feed paper feed mode stored in the RAM 24 is set to 176 inches, and the paper feed amount in the minute paper feed mode is stored in the minimum transfer unit in the paper feed roller drive mode 27. It is! /120 inches.

Here, the paper feed drive means 5 in FIG. 1 includes the paper feed rollers 14a, 14b, the bin tractor 15 in FIG. 2, and the paper feed roller drive motor 2 in FIG.
7, and the drive control means 6 in FIG. 1 corresponds to the drive circuit 31 of the paper feed roller drive motor 27 in FIG.

As shown in FIG. 4, for example, the operation section 25 includes a printing speed switching key 35 for switching the printing speed, a paper selection key 36 for selecting the paper type, and a key for performing cueing of the leading edge of the recording paper. The page feed key 37 gives instructions, the line feed key 38 as the first operating means 1 in FIG. The stored print data is transferred to the CPU
Online key 39 for instructing to enable reception at 21
Furthermore, on the sides of the print speed switching key 35 and the paper selection key 36, there is a
．． 36 is provided with an indicator LED to inform the operator of which mode is currently set.

In particular, in this embodiment, when the paper selection key 36 is pressed at the same time as the line feed key 38 is pressed, an instruction is issued to execute a continuous high-speed paper feed function that continuously increases the transport speed of the recording paper for the duration of the press. , online key 39 and page break key 3
7 is pressed at the same time, the 1/120 inch minute backward movement function described above is executed, and when the online key 39 and line feed key 38 are pressed at the same time, the 1/120 inch minute forward movement function is executed. It is designed to give instructions on what to do.

In other words, the online key 39 is changed to the page break key 37. When used in combination with the line feed key 3, this online key 39 corresponds to the second operating means 2 in FIG. 1, and when used in combination with the paper selection key 36 and the line feed key 37, this The paper selection key 39 is the third operating means 3 in FIG.
corresponds to

FIGS. 5(a) and 5(1)) are flowcharts for explaining the operation of the paper feed control device of the printer.

In step S1, it is determined whether or not the line feed key 38 is pressed down, and if No, in step S2 it is determined whether or not the page break key 37 is pressed down.
In this case, it is determined in step S3 whether or not another key is pressed.

If the determination in step S3 is also NO, this routine ends; if the determination is YES, the routine proceeds to step S4 to perform processing according to the pressed key.

By the way, if it is determined YES in step Sl, the process proceeds to step S5, while if it is determined YES in step S2, the process proceeds to step S6.

In step S5, it is determined whether or not the paper selection key 36 is pressed. If YES, the CPU 21 determines that a continuous high-speed paper feed mode is requested by pressing the paper selection key 36 and the line feed key 38 at the same time. Recognize and step S7
The process proceeds to a high-speed forward rotation driving routine to execute a well-known continuous high-speed paper feeding function, while if No, the process proceeds to step S8.

In both step S8 and step S6, it is determined whether the online key 39 is pressed down. By the way, if it is determined as YES in step S8, the CPIJ 21 recognizes that the minute advance transfer mode is requested by simultaneously pressing the online key 39 and the line feed key 38, and proceeds to step S9.
If it is determined to be ES, press online key 39 and page break key 3.
CP tJ21 recognizes that the minute backward transfer mode by pressing down at the same time as 7 is requested, and proceeds to step SIO.

On the other hand, if it is determined NO in step S8, the CPU 21
recognizes that the line feed transfer mode is requested by pressing the Chinese/German line feed key 38, and proceeds to step Sll, and if it is determined No in step S6, the CPU 21 executes the process by pressing the page feed key 37 (4>German). It is recognized that the page break transfer mode is requested, and the process proceeds to step S12.

Next, in steps 39 and 310, a minute paper feed request is retrieved from the RAM 24, and then in step S13,
The process proceeds to S14, and in step Sll, the line feed paper feed amount is read from the RAM 24, and the process proceeds to step S1.
3, and further in step 312, the amount of paper feed necessary for page break is calculated by a well-known method, and the process proceeds to step S1.
Proceed to step 5.

Step S13. In S15, the paper feed roller drive motor 27 is set to drive in forward rotation, and the process proceeds to step SI6.In step S14, the paper feed roller drive motor 27 is set to be driven in reverse rotation, and the process proceeds to step 316. move on.

In step 516, in accordance with each transfer amount determined in steps 39 to 312, and in step S
Paper feed roller drive motor 27 set in steps 13 to S15
A predetermined paper feeding execution routine is executed according to the driving direction of the paper, and then the process ends.

In this paper feed execution routine, in the line feed paper feed mode, the drive circuit 31 operates the paper feed roller drive motor 27 to move the recording paper forward by 1/6 inch, and in the minute forward paper feed mode, the drive circuit 31 The drive circuit 3I operates the paper feed roller drive motor 27 to move the recording paper forward by 1/120 inch, and in the minute backward paper feed mode, the drive circuit 3I uses the paper feed roller drive motor 27 to move the record paper forward by 1/120 inch. Operate to move backwards.

That is, the paper feed amount is controlled depending on the number of pulse signals generated by the drive circuit 31. In addition,
As is well known, the continuous high-speed paper feed mode is controlled so that pulse signals are continuously generated, and detailed explanation thereof will be omitted here.

In the above embodiment, it goes without saying that the paper feed star during minute paper feed can be arbitrarily set within a range smaller than the width of one line.Furthermore, the printer in the above embodiment is configured to be able to feed the paper forward and backward. However, the present invention can also be applied to printers equipped with only one of the paper feeding functions.

〔Effect of the invention〕

As explained above, in the present invention, line feed paper feed is performed.

It is possible to perform different types of paper feeding, such as minute paper feeding at minute pitches less than one line width, and continuous high-speed paper feeding, so even if the amount of paper feeding is large, at least the paper can be quickly fed to the appropriate position. The result is that any print position adjustment can be easily accommodated. Therefore, it is possible to provide an easy-to-use printer that does not require manual operation of the platen knob as in the past even when correcting a slight print position shift.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram corresponding to the claims of the present invention. FIGS. 2 to 5 relate to one embodiment of the present invention, and FIGS.
The figure is a partial sectional view of the printer, FIG. 3 is a block diagram of the printer's configuration, FIG. 4 is a plan view schematically showing the printer's operation section, and FIGS. 6 is a flowchart for explaining the operation. FIG. 6 shows a conventional example, (5) is a plan view of the recording paper showing a correct printing state, and fbl is a plan view of the recording paper showing a misaligned printing state. 1 ...first operation means, 2..second operation means, 3.
...Third operating means, 4...Control means, 5...Paper feeding drive means, 6...Drive control means.

Claims (1)

[Claims] (1) A first operating means that instructs to feed paper by one line width, that is, feed a line feed, and when operated in combination with the first operating means, feeds paper by a predetermined minute pitch smaller than one line width. When operated in combination with the second operating means for instructing, and the first operating means, the third operating means for instructing continuous paper feeding at a higher speed than line feed paper feed, and the presence or absence of operating signals from each operating means. , line feed feed,
A control means that recognizes which form of execution is requested, micro paper feed or continuous high speed paper feed, and sends control information according to the recognized form, and a paper feed drive based on the control information from the control means. A paper feed control device for a printer, comprising: drive control means for controlling the operation of the means;