JPS63237969A - Printer-controlling system - Google Patents

Abstract

PURPOSE:To enable a paper to be accurately sucked-in to the first printing position, by setting a paper feed quantity by a feed quantity setting part according to the kind of the paper through using a correction switch and feed quantity setting switches provided on an operator panel. CONSTITUTION:A feed quantity setting part 14 of a printer-controlling part 10 consisting of a microcomputer varies a paper feed quantity presently selected, according to an input from a correction switch 16 on an operator panel 12, and stores a changed feed quantity k1-k3 into a corresponding position in a feed quantity storage part 13 according to a designation of an ordinary paper S1, an envelope S2 or a thin paper S3 by feed quantity setting switches 17. When a paper is detected by a paper-detecting sensor 18, a feed quantity controlling part 15 generates pulses corresponding to the feed quantity k1-k3 selected and read from the storage part 13, thereby driving a pulse motor 19. Thus, the paper can be accurately sucked-in to the first printing position.

Description

[Detailed description of the invention] 〔overview〕 By operating the operator panel on the printer.

By making the feed amount variable from the time the paper hits the paper detection sensor until the paper is sent to the first print position, it is possible to accurately suck the paper into the first print position regardless of the type of paper. There is.

[Industrial application field]

The present invention relates to a printer control system that can easily eliminate variations in print positions due to the type of paper that occur when a cut sheet is sucked into a printer.

[Prior Art] - Fig. 5 is an explanatory diagram of paper suction in a printer, and Fig. 6 is an explanatory diagram of a conventional suction operation.

In FIG. 5, L8 is a paper detection sensor, 30 is paper, 31 is a paper feed roller, and 32 is a head.

33 represents a platen.

In order to suck the paper 30 to the first printing position, the paper is detected by the paper detection sensor 18, and then the nine paper feed rollers 31 are driven by a certain amount by a pulse motor (not shown) to feed the paper by a certain amount.

That is, as shown in the processing operation shown in FIG. 6, when paper is sucked in, the paper feed pulse motor is first rotated one pulse at a time, and it is checked whether or not the paper is caught on the paper detection sensor 18. When there is no paper on the paper detection sensor 18.

Furthermore, the pulse motor is rotated by one pulse. When the paper detection sensor 18 detects paper, a certain amount of pulses are output to the pulse motor, the pulse motor is rotated, and the paper 30 is sent to the first print position where the print head 32 is located.

[Problem that the invention seeks to solve]

FIG. 7 is an explanatory diagram of problems caused by the conventional method.

The paper detection sensor 18 shown in FIG. 5 is a sensor that detects, for example, the reflected light of the light hitting the paper, but whether or not paper has hit the paper detection sensor 18 is determined by the sensor output as shown in FIG. 7. The determination is made based on whether a predetermined slice level has been reached. and.

If the sensor output exceeds the predetermined slice level.

The paper is fed by a constant feed ilk, and this is set as the first printing position.

However, according to such a conventional method, when paper of a non-rectangular medium such as an envelope is sucked in and paper is detected, variations may occur in the printing position depending on the position of the paper detection sensor 18. That is, the position of the paper detection sensor 18.

If the paper is located at the edge of the envelope, as shown by the dotted line in FIG. 5(b), paper detection will be delayed by i as shown in FIG. 7(b). Therefore, in the case of FIG. 7(b), the printing position is too advanced from the first printing position of the general paper shown in FIG. 7(a).

Furthermore, when the paper is thin paper, the output of the paper detection sensor 18 is small, so it takes time for the sensor output to exceed the slice level, as shown in FIG. 7(c), for example. In this case, the printing position will advance too far.

In order to deal with the case shown in Figure 7 (b), it is necessary to change the position of the paper detection sensor 18. In order to deal with the case as shown in Figure (C), it is necessary to change the slice level or the magnitude of the sensor output, making it difficult to perform accurate control depending on the paper type.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems and provides a means for easily and accurately sucking paper into a printing position, for example, by one trial printing.

[Means for solving problems]

Figure 3 shows an example of the basic configuration of the present invention.

In FIG. 1, 10 is a printer control unit that controls the printer mechanism etc. by a microcomputer, 11 is the printer mechanism, 12 is the operator panel of the printer,
] 3 is a feed amount storage section constituted by a non-volatile memory; 14 is a feed amount setting section for setting the feed amount in the feed amount storage section 13; 15 is a feed amount control section for controlling the amount of paper feed;
6 is a correction switch for correcting the feed amount; 17 is a feed amount setting switch for instructing setting of the feed amount; and 18 is a paper detection sensor that detects paper by reflection of light, for example.

Reference numeral 19 represents a pulse motor that drives the paper feeding roller via a belt.

The feed amount storage unit 13 is constituted by a non-volatile memo 'J (RAM), and is capable of storing several types of feed amounts from when the paper is detected until the paper is sent to the first printing position.

The feed 1 setting section 14 is configured to
Increase or decrease the currently selected paper feed amount.

In response to an instruction from the feed amount setting switch 17, a process is performed in which the changed feed amount is stored in the position corresponding to the feed amount setting switch 17 in the feed storage section 13.

When the paper detection sensor 18 detects paper, the feed amount control unit 15 generates a number of pulses corresponding to the feed lk selected and read from the feed amount storage unit 13 and drives the pulse motor 19. .

As a result, the feed fl k! The paper is fed and the paper is placed at the first printing position.

[Effect]

FIG. 2 is an explanatory diagram of the operation of the present invention.

According to the invention, a correction switch 16 . provided on the operator panel 12 . By the feed type setting switch 17,
The paper feed amount can be arbitrarily set using the feed type setting section 14. The feed amount control section 15 drives the pulse motor 19 according to the set feed amount.

Therefore, for example, in the case of general paper, the paper feed amount is set to 1, as shown in Figure 2 (A), and in the case of envelopes, the paper feed amount is set to 2, as shown in Figure 2 (B). In the case of thin paper, the paper feed amount can be varied depending on the type of paper by setting the paper feed amount to 3 as shown in Figure 2 (C), and the accurate first Paper can be sucked up to the printing position.

When determining the feed amount depending on the paper, if the minimum printing pitch is, for example, 0.1 mm, set the correction l unit to 0.
．． The length shall be 1 mm. If one unit of correction is fixed in this way, you can test print one sheet first and measure the deviation from the correct printing position, and then adjust the paper feed amount by the amount corresponding to the deviation of the printing position. can be easily corrected.

Thereafter, by using the corrected paper feed amount, the paper can be sucked into the correct position.

〔Example〕

FIG. 3 is an explanatory diagram of a feed amount setting process according to an embodiment of the present invention, and FIG. 4 is an explanatory diagram of a feed amount control according to an embodiment of the present invention.

According to FIG. 3, the feeding die setting section 1 mainly shown in FIG.
Processing No. 4 will be explained. Numbers in the following explanation■
~■ correspond to processes ■~■ shown in FIG.

■ If you need to adjust the paper feed amount, try printing as a trial print.
Performs paper intake, printing, and ejection operations.

(2) Next, check the operation switches provided on the operator panel 12, and first determine whether the "+" correction switch 16 is ON. If it is not ON, control is transferred to 2 process ■.

■ If the "+" correction switch 16 is OK.

Add 1 to the feed amount previously read into the internal memory or register, and return control to process (2).

(2) Determine whether the "-" correction switch 16 is ON. If it is not ON, control is transferred to process (2).

(2) If the "-" correction switch 16 is ON, 1 is subtracted from the feed amount read out in advance in the internal memory or register, and control is returned to process (2).

■ Determine whether the feed type setting switch 17 is ON. If it is not ON, the process ends. In this embodiment, a plurality of feed type setting switches 17 are provided,
If any of them is ON. The feed amount on the internal memory or register is set in the corresponding position in the feed amount storage section 13 shown in FIG.

When paper is sucked in, the feed amount is controlled as shown in FIG. 4, for example. In the following explanation, 1 to 2 correspond to processes 1 to 2 shown in FIG. 4.

■ 1 of the feed amount set by the operator panel 12
Select one with a switch and read it to internal memory or register.

■ Rotate the paper feed pulse motor 19 by one pulse.

■ Determine whether or not the force applied to the paper is applied to the paper detection sensor 18. If the paper has not yet arrived, proceed with the process.
The control is returned to , and the pulse motor 19 is similarly rotated.

■ When the paper is applied to the paper detection sensor 18, pulses are sent to the pulse motor 19 by an amount corresponding to the feed amount selected and read in process (■).

Rotate the pulse motor 19. Then, wait for printing or line feed instructions.

In the above embodiment, a plurality of feed type setting switches 17 are provided so that several types of paper can be handled.
With multiple feed station selection switches.

In combination with one feed type setting switch, it is also possible to correspond to several types of paper.

〔Effect of the invention〕

As explained above, according to the present invention, the paper feed amount after paper detection can be set in advance according to the paper type.
It becomes possible to accurately suck the paper into the first printing position. Additionally, when printing on paper that has a printing frame printed in advance, it is also possible to perform printing that accurately matches the printing frame by adjusting the paper feed amount according to the present invention after one trial printing. It is.

[Brief explanation of drawings]

Fig. 1 is a basic configuration example of the present invention, Fig. 2 is an explanatory diagram of the operation of the present invention, Fig. 3 is an explanatory diagram of a feeding mold setting process according to an embodiment of the present invention, and Fig. 4 is an illustration of an embodiment of the present invention. FIG. 5 is an explanatory diagram of the feed amount control according to the embodiment, FIG. 5 is an explanatory diagram of paper suction of the printer, FIG. 6 is an explanatory diagram of the conventional suction operation, and FIG. 7 is an explanatory diagram of the U point in the conventional system. In the figure, 10 is a printer control unit, 11 is a printer mechanism unit,
Reference numeral 12 represents an operator panel 913 representing a feed storage unit, 14 a feed amount setting unit, 15 a feed control unit, 16 a correction switch, 17 a feed type setting switch, 18 a paper detection sensor, and 19 a pulse motor. . Patent applicant Agent: Usatsuk Electronics Industry Co., Ltd.
Patent attorney Mori 1) Hiroshi (2 other people) Book 46gB 6 Jη for ¥9,000! l 2111 3I121

Claims (1)

[Claims] In a printer that is equipped with a paper detection sensor (18) and controls to feed the paper to the first printing position after detecting the paper at the time of paper suction, the paper feeding amount after paper detection is controlled from the outside. A feed amount setting means (14) that is set by inputting an instruction from the paper feed amount, and a feed amount storage means (13) that stores the set paper feed amount in a non-volatile memory.
); and a feed amount control means (15) for controlling the paper feed according to the feed amount stored in the feed amount storage means (13) during the paper suction operation. method.