JPS62218162A - Paper discharging speed controller for printer - Google Patents

Abstract

PURPOSE:To enable a printed paper to be discharged at high speed, by providing a paper guide for readjusting a slip form paper to a specified part of a paper-feeding passage, a shape sensor for detecting the paper, and a controlling part for rotating a feeding motor at high speed. CONSTITUTION:A paper guide 21 is provided on a base plate 2 on the user's side of a supplying port 1, whereby a feeding passage for a slip form paper 22 is readjusted as a specific part of a paper-feeding passage. A paper feed sensor 3 and shape sensor 15b are provided as a part through which the slip form paper 22 is not passed but at least a part of a continuous form paper is continuously passed. When the sensor 15b generates a detection output, it is decided that the continuous form paper is being used, whereas when such as output is not generated, it is decided that the slip form paper 22 is being used. A circuit for decision and control comprises a main controlling part (MCT) 31, which comprises a microprocessor (CPU) and memories or the like, and a small-scale sub-controlling part (SCT) 32. The SCT 32 drives a feeding motor (LFM) 4 consisting of a stepping motor through a driving circuit (DRV) 33. Accordingly, when the sensor 15b does not generate the detection output and it is judged that the slip form paper is being used in a non-printing state after completion of printing, the paper is discharged at high speed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to high-speed ejection of cut-sheet paper in a printer that can freely select between continuous paper and cut-sheet paper depending on the application. It is related to the device.

[Conventional technology]

In printers used as terminal equipment for various control devices (electronic computers), when loading paper, a paper sensor detects the paper, automatically loads the paper, and starts printing from a predetermined location. However, when using continuous paper, the leading edge of the paper is detected and the paper is transported to the printing start position using this as a reference.If the paper is transported at high speed during this period, the amount of transport is uncertain, and the printing starts. Because the parts would be inaccurate, it was manufactured so that only low-speed transport was possible, and the paper was ejected at a low speed even after printing was completed.

Therefore, when it is possible to freely select between continuous paper and cut-sheet paper, it is impossible to eject the paper at high speed even though printing is quickly completed with the cut-sheet paper.

[Problem that the invention seeks to solve]

For this reason, even when using cut-sheet paper, the paper is only ejected at a low speed, and the paper cannot be loaded immediately, resulting in a problem that the operating speed of the printer is reduced.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention is constructed by the following means.

That is, in a printer that can freely select between continuous paper and cut paper, there is a paper guide that regulates the conveyance path of the cut paper to a specific part of the paper transport path, and a paper guide that allows the cut paper to pass through and A shape sensor that detects paper is installed at a portion where at least a portion of the continuous paper passes continuously, and this shape sensor determines that the continuous paper is not detected and printing has finished. The control unit is provided with a control unit that rotates the paper transport motor at high speed according to the speed.

[Effect]

Therefore, the shape sensor detects only continuous paper, and if this detection output is not generated, the paper is in the form of a single cut. It rotates, and the printing method paper is ejected at high speed.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Figure 2 is a side view showing the main parts of a horizontal printer;
The paper inserted from the supply port 1 is detected by the paper feed sensor 3, such as a light emitting diode and a light receiving transistor, which are provided facing each other on the guide plates 2m and 2b, which are arranged vertically facing each other. As the transfer motor 4 rotates according to the output, the rollers 9 and 10 rotate in the direction of the arrow via the gears 5 and 6, the pulley 7 and the belt 8, and the restraining row 211 comes into contact with the rollers 9 and 10. .12 grips the paper and transports it to the right in the figure.

However, between the rollers 9 and 10, a platen 13 is provided on the lower side, and a wire tod printing type print head 14 is provided on the upper side opposite to the platen 13. A paper edge sensor 15m and a shape sensor 15b similar to the sensor 3 are provided.
5& When the leading edge of the paper is detected, there is a predetermined transport distance from this position until the printing start position of the paper coincides directly below the print head 14, so if the paper is transported by this transport distance, The motor 4 stops and enters a printing standby state.

The print head 14 is connected to the supply port 1 by a mechanism omitted in the figure.
It is supported so that it can move left and right when viewed from the side, and move forward and backward in a direction perpendicular to the paper surface.The gap between the paper surface and the leading edge 14m is automatically determined according to the paper thickness, and printing starts. The motor 4 rotates to perform a line feed when one line of printing is completed, and then the print head 14 prints while moving in the opposite direction, and the above operations are performed. Repeat.

Further, an ejection sensor 17 similar to the paper feed sensor 3 is provided on the ejection port 16 side of the print head 14.If the ejection sensor 17 detects residual paper in an initial state such as when the power is turned on, In response to this, the motor 4 is started and the remaining paper is discharged at high speed.

However, if the paper is continuous, it is ejected via the roller 210° 12 and the tractor 1B driven by the belt 8, but if the paper is cut, it is ejected from the ejection port without going through the tractor 18. It is discharged to the pocket part 19 in 16.

Figure 3 is a perspective view of the main parts showing the arrangement of each sensor 3, 15m, 15b, and 1F. A paper guide 21 is provided on the side of the paper guide 21, which regulates the transfer path of the cut-shaped paper 22 as a specific part of the general paper transfer path, and guides the paper guide 21 toward the lower side 21b of the horizontal protrusion 21m. By bringing the left side of the paper 22 into contact with each other and inserting it in the direction of the large arrow, the paper 22 will automatically be transported along this path.

In addition, in the case of continuous paper, retaining holes for sprockets are continuously drilled on both the left and right sides of the paper, and this part protrudes laterally compared to the cut-shaped paper 22, and the retaining holes When this portion is placed on and abutted against the upper step side 21e of the paper guide 21, the transport path of the paper is determined thereby.

On the other hand, the paper edge sensor 15m and the ejection sensor 1T are arranged on the transport path to detect any paper, whereas the paper feed sensor 3 and the shape sensor 15b are arranged to detect any paper. The shape sensor 15b is disposed at a portion facing the holding hole portion of the continuous paper as a portion through which at least a portion of the continuous paper passes through and where the continuous paper does not pass through. If this occurs, it is determined that continuous paper is in use, and if the same detection output does not occur, it is determined that cut-shaped paper 22 is in use.

The tractor 8 is equipped with a restraining lid 18m that can be opened and closed in the direction of the arrow, and inside this is provided pulleys that are pivotally supported by the square shaft 23 and the shaft 24. The belt 18e having the stretched feed pin 18b is connected to a square shaft 23 driven by the belt 8.
According to the rotation of the lid 1, rotate it toward the discharge port 16 side and press the lid 1.
Open 8m and insert the continuous paper holding hole into the feed pin 18b.
When the retainer lid 1B is closed, the retaining hole portion is held between the retainer lid 18 and the case 18d, and is driven by the feed pin 18b, ensuring that the entire paper sheet is transported reliably. It is done.

Note that the tractor 18 is movable while being fitted with the square shaft 23 and the shaft 24, and the lock lever 18
It is fixed by the rotation of e.A similar tractor is also provided on the right side (not shown in the figure), so the tractors on both the left and right sides can be adjusted arbitrarily according to the width of the continuous paper. It can be fixed in any position.

However, the left tractor 18 is used in a fixed manner according to the upper step side 21c of the paper guide 21.

FIG. 1 is a block diagram of the circuit configuration that performs the above judgment and control.
Main control unit (hereinafter referred to as MCT) 31 consisting of
, a similar but slightly smaller sub-control unit (hereinafter referred to as 5)
CT) 32 is provided, and the MCT 31 is equipped with a paper feed sensor (hereinafter referred to as PFS) 3 and a paper edge sensor (hereinafter referred to as PE).
S) 15m, the detection outputs of the shape sensor (hereinafter referred to as PMS) 15b, and the detection outputs of the exhaust sensor (hereinafter referred to as RE8) 17 are provided, as well as a host device such as a computer (hereinafter referred to as It is used to exchange data with UCE).

In addition, while the 5CT32 is given commands from the MC'r31, a transfer motor (hereinafter referred to as LFM) using a step motor is sent to the 5CT32 via a drive circuit (hereinafter referred to as DRY) 33.
) 4, MCT31, 5C
At T32, each CPU executes the instructions in the memory and performs a predetermined control operation while accessing necessary data from the memory.

FIG. 4 is a flowchart of the main part of the control situation by MCT31 and 8CT32. Emissions Directive?J101
is Y (yr:s) and is "PMs detected? J102
is checked, and in accordance with this N (No), ``high-speed discharge flag setting'' 111 is performed, and then ``high-speed discharge command sending'' 112 is performed to 5CT32.

Further, when step 102 is Y, continuous paper is being used (1), "high-speed ejection flag Φ reset" 121 is performed corresponding to step 111, and "low-speed ejection command transmission" is performed.
122 is performed in the same manner as step 112.

On the other hand, in (B), in response to "receive ejection command" 201, "high speed ejection? J202" is determined, and if this is Y, a short period pulse is sent via DRV33,
is rotated many times at high speed to perform "high-speed discharge" 211, whereas when step 202 is N, the LFM 4 is driven by pulses of a normal cycle and "low-speed discharge" 212 is performed.

Therefore, in the non-printing state when printing has finished,
If the PMS 15b detects that a single sheet of paper is in use, the paper is ejected at high speed, and the next paper can be loaded, the printing status can be checked, and the paper can be taken out immediately. can be done quickly.

Note that each period of steps 211 and 212 may be regulated by a timer, etc., and the end of printing is determined not only by the "ejection command" from the UCE but also by the status data in the memory, and as necessary. High speed evacuation is also optional.

However, the shape and location of the paper guide 21 may be selected according to the conditions, and the PMS 15b
All you have to do is decide where to place it.

Also, the same effect can be obtained by integrating MCT31 and 5CT32 or using a dedicated control circuit.
, PR815a, PM815b, PE517
For each sensor, a reflected light type or a sensor other than a photoelectric type may be used. In addition to a step motor, a 6 maple motor can be used as the LFM4 as long as the transfer speed can be controlled. , it is possible to make various modifications such as being applicable not only to horizontal printers but also to various types of printers.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, single-cut paper after printing is discharged at high speed, speeding up the operation, and selective use of continuous paper and single-cut paper is achieved. can be used freely, and remarkable effects can be obtained in various printers.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a block diagram of the circuit configuration, Fig. 2 is a side view showing the main parts, Fig. 3 is a perspective view of the main parts showing the arrangement of each sensor, and Fig. 4 is a flowchart of the main part of the control situation. 1. [Phase]... Supply port, 4... Motor (LFM),
9.10...Roller, 1411...Print head,
15b... shape sensor (PMS), 16... discharge port, 21... paper guide, 22... cut-shaped paper, 31... main control unit (MC?), 32...Sub control unit (SCT). Patent applicant: Tamura Electric Manufacturing Co., Ltd. NEC Corporation

Claims (1)

[Claims] In a printer that can freely select between continuous paper and cut paper, there is provided a paper guide that regulates the transfer route of the cut paper to a specific part of the paper transport route, and a paper guide that prevents the cut paper from passing through. a shape sensor that detects paper provided at a portion through which at least a portion of the continuous paper passes continuously; and a shape sensor that determines that the continuous paper is not detected and printing has been completed; 1. A paper ejection speed control device for a printer, comprising: a control unit that rotates a paper transport motor at high speed in accordance with the speed of the paper transfer motor.