JPH05261993A - Printer - Google Patents

Abstract

PURPOSE:To provide a printer which detects slant insertion of a paper automatically when it occurs and can correct the slant of the paper automatically. CONSTITUTION:A CPU 1 makes sensors 2A and 2B scan on a paper by means of a scanning mechanism 4. When a slant of the paper is detected, the paper is sent by varying rotational speeds of paper feed rollers 61A and 61B, so that the slant of the paper is corrected so as to straighten, and then printing operation starts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for printing characters and figures on a paper and outputting the paper, and more particularly to correction when the paper is not inserted as prescribed.

[0002]

2. Description of the Related Art Conventionally, has a word processor or the like been equipped with a printing device for outputting a created document or the like?
Or it can be connected externally. In such a printing apparatus, there is a case where a sheet is manually inserted into the apparatus without a guide or the like, and the sheet is inserted into the apparatus while being inclined. In such a case, if you print as it is,
Since the characters are printed diagonally on the paper, the operator has to manually correct the inclination of the paper,
As a result, the operator is burdened and the printing operation is delayed.

Further, in some of the above printing devices, the lateral insertion position of the paper is fixed. When setting the paper in such a printing device, if the paper is inserted from the predetermined position and deviated from the predetermined position, if printing is performed as it is, the printing position of the horizontal data is deviated from the position set in the format. There was a drawback that it would end up. For this reason, even if the paper is inserted at a position displaced from the horizontal insertion position as described above, the operator must manually correct the insertion position of the paper, which also imposes a burden on the operator. At the same time, there is a drawback that the printing operation is delayed.

[0004]

When a sheet is inserted into the conventional printing apparatus while being tilted as described above, the operator must manually correct the tilt of the sheet. There is a drawback that the printing operation is delayed due to the burden. Further, even when the paper is inserted into the printing device in which the lateral insertion position of the paper has been determined by deviating from the predetermined position, the operator must manually correct the insertion position of the paper, As a result, the operator is burdened by this amount and the printing operation is delayed.

In view of the above, the present invention eliminates the above-mentioned drawbacks, and when a sheet is inserted with an inclination, the apparatus can automatically detect this and automatically correct the inclination of the sheet.
To provide a printing device capable of automatically correcting the printing position in a form in which the device automatically detects the above-mentioned misalignment when the lateral insertion position of the paper is misaligned and corrects the misalignment. Has a purpose.

[0006]

According to the present invention, in a printing apparatus for printing data on an inserted paper, a tilt detecting means for detecting a tilt of the paper with respect to a predetermined direction and a predetermined distance in the lateral direction of the paper are provided. A plurality of sheet feeding means arranged to feed the sheet and a control means for feeding the sheet with a difference in the sheet feeding speed of each sheet feeding means corresponding to the inclination detected by the inclination detecting means are provided. Have a configuration.

As another configuration different from the above configuration, the present invention is a printing apparatus for printing data on an inserted sheet, and detects how much the lateral position of the inserted sheet deviates from a predetermined position. Position detecting means, and print control means for changing the scanning range of the print head and the timing of printing data by the print head in response to the deviation detected by the position detecting means.

[0008]

In the printing apparatus of the present invention, the inclination detecting means detects the inclination of the paper with respect to the predetermined direction. The plurality of sheet feeding means are arranged in the lateral direction of the sheet so as to be separated by a predetermined distance and feed the sheet. The control means corrects the inclination of the paper by feeding the paper with a difference in the paper feed speed of each paper feed means corresponding to the inclination detected by the inclination detection means.

In the printing apparatus having an operation different from the above operation, the position detecting means detects how much the lateral position of the inserted paper is displaced from the predetermined position.
The print control means changes the scanning range of the print head and the timing of printing data by the print head in response to the deviation detected by the position detection means, and even if the paper is deviated from the predetermined position, Print the data at the position.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the printing apparatus of the present invention. Reference numeral 1 denotes a CPU that performs general control of the printer 6 and control related to the operation of a word processor or the like equipped with the printing apparatus of this example, and 2A and 2B are sensors (not shown) for detecting the inclination of the paper. The sensor includes, for example, a light emitting element and a light receiving element, and outputs a signal corresponding to the reflection level of the light emitted from the light emitting element from the light receiving element. 3 is the sensor 2A,
An interface for inputting a detection signal from the CPU 2 to the CPU 1 side, a scanning mechanism unit 4 for moving the sensors 2A, 2B in the lateral direction of the paper, and a program 5 for controlling the CPU 1 and various data and the sensors 2A, 2B. Is a memory for storing the detection information and the like, and 6 is a printer for printing the document data and the like sent from the CPU 1 on the paper, and controls rollers 61A and 61B for correcting the inclination of the paper and the rotation speeds of these rollers. It has a roller drive unit 62.

FIG. 2 is a diagram showing the positional relationship among the above-mentioned sensors 2A and 2B, rollers 61A and 61B, and paper. The sensors 2A and 2B are arranged so as to simultaneously scan the upper side of the sheet 100 in the horizontal direction, and the sensor 2
Along the lower side of the path along which A and 2B move, the reflecting surface 10A,
10B is arranged. The paper 100 has this reflection surface 10
It is inserted so as to cover A and 10B.

Next, the operation of this embodiment will be described. When the paper is inserted into the printer 6, the paper is fed by the roller driving unit 62.
It is sent to a predetermined position by rollers 61A and 61B driven by. At this time, as shown in FIG.
When is inserted beyond the reflecting surface 10A, the CPU 1 activates the scanning mechanism unit 4 and simultaneously moves the sensors 2A and 2B in the arrow A direction. As a result, the sensors 2A and 2B move on the paper 100 and reach the reflection surfaces 10A and 10B. Since the sensors 2A and 2B detect the reflection level of the scanning surface during the scanning, the sensors 2A and 2B detect the paper 1
When it reaches the positions of the reflecting surfaces 10A and 10B after passing over 00, the detected reflection levels differ. Therefore, if the CPU 1 monitors the reflection level information output from the sensors 2A and 2B via the interface 3, it is possible to know when the sensors 2A and 2B have reached the reflection surfaces 10A and 10B. be able to.

Here, when the sheet 100 is inserted straight without being tilted, the sensor 2 because the edge of the sheet 100 intersects the reflecting surfaces 10A and 10B at a right angle.
A and 2B reach the reflecting surfaces 10A and 10B at the same time.
However, if the paper 100 is inserted at an angle,
Since the sensors 2A and 2B arrive at the reflecting surfaces 10A and 10B at different times, a deviation occurs between them. For example,
When the sensor 2A reaches the reflecting surface 10A side faster than the sensor 2B, the sheet 100 is inclined to the left side, and in the opposite case, the sheet 100 is inclined to the right side, and the CPU 1 can determine this inclination. it can. Therefore, in the CPU 1, whichever of the sensors 2A and 2B is the reflective surface 10A and 1B first.
Information on whether the sensor has reached the 0B side, and both sensors 2A,
By setting the rotation speeds of the rollers 61A and 61B to be different from the arrival time difference information of 2B, the inclination of the paper 100 is corrected while the paper 100 is being fed from the position of FIG. To do. For example, when it is determined that the paper 100 is inserted while tilted to the left, the CPU 1
Corrects the inclination of the sheet by making the rotation speed of the roller 61A faster than the rotation speed of the roller 61B via the roller driving unit 62.

According to the present embodiment, when the sheet 100 is inserted with an inclination, the CPU 1 detects the inclination by the sensors 2A, 2B.
Is determined based on the information from the rollers 61A, 6A through the roller drive unit 62 in the direction for correcting the determined inclination.
By making the feeding speed of 1B paper different,
The inclination of the sheet 100 can be corrected so that the sheet 100 is inserted straight. Therefore, the operator
Even when 00 is tilted and inserted, the tilt is automatically corrected by the apparatus, and thus in such a case, normal printing operation can be smoothly performed without burdening the operator.

FIG. 3 is a block diagram showing another embodiment of the printing apparatus of the present invention. Reference numeral 1 denotes a CPU that performs overall control of the printer 6 and control related to the operation of a word processor or the like equipped with the printing apparatus of this example, and 2 denotes a sensor (not shown) for detecting the lateral insertion position of the paper. , A light emitting element and a light receiving element, and the light receiving element outputs a signal corresponding to the reflection level of the light emitted from the light emitting element. 3 is an interface for inputting the detection signal from the sensor 2 to the CPU 1 side, 4
Is a scanning mechanism unit for moving the sensor 2 in the lateral direction of the paper (not shown), 5 is a memory for storing programs for controlling the CPU 1 and various data, and information from the sensor 2, formatting information, and the like, and 6 is not shown. CPU on paper
The printer prints document data and the like sent from the printer 1, and includes a print controller 63 and a head driver 64. Reference numeral 7 is a key input unit for inputting characters and format setting information. FIG. 4 is a diagram showing the positional relationship between the sensor 2 and the paper 100. The sensor 2 moves above the sheet 100 in the direction of arrow A to detect the reflection level of the scanning surface. A reflecting surface 10 is arranged along the scanning direction path of the sensor 2. The sheet 100 is inserted so as to cover the reflection surface 10.

Next, the operation of this embodiment will be described. In the apparatus of this example, it is assumed that the sheet 100 shown in FIG. 4 is designed to be inserted at a predetermined position in the lateral direction of the apparatus. Therefore, normally, the print controller 63 of the printer 6 and the head driver 6
A sheet 100 is inserted in the predetermined position, and controls the scanning range of the head and the print timing of data by the head in accordance with the format information set in the memory 5. Here, in this example, the paper 100
4 is inserted as shown in FIG. 4, the CPU 1 activates the scanning mechanism unit 4 to move the sensor 2 in the direction of arrow A, and at that time, the reflection level of the scanning surface detected by the sensor 2 is read through the interface 3. . By the way, the sensor 2 first scans the reflecting surface 10, then scans the sheet 100, and then scans the reflecting surface 10 again. Therefore, the CPU 1 determines when the reflection level detected by the sensor 2 becomes low after the sensor 2 is moved, and thus the paper 100 is detected.
The position of the left edge of the sheet 100 is detected, and the position of the right edge of the sheet 100 is detected when the reflection level becomes high again.
Thereby, the CPU 1 knows how much the paper 1 is laterally displaced from the predetermined position of the apparatus, and if the paper 100 is the standard paper, which size of the standard paper is inserted. You can

The CPU 1 drives the printer 6 to drive the paper 10
When detecting that the paper 100 is displaced from the predetermined position by the above-mentioned operation when printing data on 0, the head drive unit 64 is controlled so as to scan the head within the range in which the displacement is corrected. The printing control and the printing end control are performed from the position where the deviation is corrected by the printing control unit 63. For example, when it is detected that the paper 100 is shifted by ΔX to the right of the predetermined position, the CPU 1 causes the head drive unit 64 to set the scanning range of the head to the format setting value set in the memory 5. Is also shifted to the right by ΔX, and at the same time, the print control unit 63 is controlled to start printing from the position shifted to the right by ΔX.

According to this embodiment, when the paper 100 is inserted, the CPU 1 detects the lateral deviation of the paper 100 from the predetermined position, and based on this deviation, the CPU 1 drives the head through the head drive section 64. By changing the scanning range of the paper and changing the print timing of the data through the print controller 63, the data is printed at the same position as when the paper 100 is inserted at the predetermined position. be able to. Therefore, even if the operator cannot insert the paper 100 into the predetermined position, it is not necessary to correct the paper 100 to the predetermined position, and the normal printing operation is performed as it is, without burdening the operator. Therefore, a smooth printing operation can be performed.

[0019]

As described above, according to the printing apparatus of the present invention, when a sheet is inserted with an inclination, the apparatus can automatically detect the inclination and automatically correct the inclination of the sheet. When the lateral insertion position of the paper is misaligned, the apparatus can automatically detect the misalignment and automatically correct the printing operation by correcting the misalignment.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a printing apparatus of the present invention.

FIG. 2 is a diagram showing a positional relationship between the sensor shown in FIG. 1, a roller, and a sheet.

FIG. 3 is a block diagram showing another embodiment of the printing apparatus of the present invention.

FIG. 4 is a diagram showing a positional relationship between the sensor shown in FIG. 1 and a sheet.

[Explanation of symbols]

1 ... CPU 2, 2A, 2
B ... Sensor 3 ... Interface 4 ... Scanning mechanism 5 ... Memory 6 ... Printer 61 ... Roller drive 61A, 61
B ... Roller 63 ... Print control unit 64 ... Head drive unit

Claims (2)

[Claims] 1. A printing apparatus for printing data on an inserted paper sheet, wherein the paper sheet is fed by being provided with a tilt detecting means for detecting a tilt of the paper sheet with respect to a predetermined direction and a lateral direction of the paper sheet and being separated by a predetermined distance. A printing apparatus comprising: a plurality of paper feeding means; and a control means for feeding the paper with a difference in the paper feeding speed of each paper feeding means corresponding to the inclination detected by the inclination detecting means. .. 2. A position detecting means for detecting how much the lateral position of the inserted paper is displaced from a predetermined position in a printing device for printing data on the inserted paper, and the position detecting means. A printing apparatus comprising: a scanning range of the print head and print control means for changing the timing of printing data by the print head in accordance with the deviation detected by the print head.