JPH0632010A - Printer line-feed quantity-composing system - Google Patents

Abstract

PURPOSE:To make line-feed processing of a plurality of line-feed commands possible through one paper-feed operation by providing a comparison means between the operable quantity from the current position to a paper end and the line-feed quantity of a received line-feed command. CONSTITUTION:A means 23 for comparing the line-feed composite quantity of a received line-feed command with the operable quantity from the current position to a paper end PE compares a line-feed quantity composed by a means 21 for composing the line-feed quantity of the received line-feed command with the operable quantity from the current position to PE recognized by a means 22 for recognizing the operable quantity from the current printing paper position to FE. When the operable quantity from the current position to PE recognized by the means 22 for recognizing the operable quantity from the current printing paper position to PE is larger than or equal to the line-feed quantity composed by the means 21 for composing the line-feed quantity of the received line-feed command, the composed line-feed quantity is maintained. A means 30 for executing line-feed processing according to the line feed quantity performs a paper feed for the composed line-feed quantity by the use of a paper-feed mechanism 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of synthesizing line feed amounts when a printer receives a plurality of line feed commands.

[0002]

2. Description of the Related Art A conventional line feed process in a printer employs a method of dividing a line feed amount performed in one operation into a plurality of line feed processes as described in JP-A-3-38367. .

Further, conventionally, a method has been adopted in which the line feed amounts of a plurality of line feed commands are combined into one line feed amount to execute the line feed processing.

[0004]

In the prior art, since the line feed amount performed in one operation is divided into a plurality of times, the paper feeding operation occurs a plurality of times. As the number of paper feeding operations increases, the line feed processing time also increases, and the paper feeding processing efficiency deteriorates.

Further, the line feed amounts of a plurality of line feed commands are combined into one line feed amount, and the line feed processing is executed. In this method, the line feed processing of the combined line feed amount is executed without recognizing the paper end of the print sheet, so the line feed amount after the paper end is detected may be discarded and the print position on the print sheet may change.

An object of the present invention is to, when a plurality of line feed commands are received, combine the line feed amounts of the respective line feed commands and compare the line feed composite amount with the operable amount up to the paper end of the printing paper to perform the operation. It is to provide a line feed amount composition method that executes line feed processing when the line feed composition amount is smaller than the possible amount.

[0007]

In order to achieve the above object, the present invention provides a means for recognizing the reception of a line feed command, a means for synthesizing the line feed amount of received line feed commands, and an operation from the current position of the printing paper to the paper end. Except when the paper end is detected, a means for recognizing the possible amount, a means for comparing the operable amount from the current position to the paper end and the amount of line feed composition of the received line feed command, and a means for executing line feed processing according to the line feed amount are provided. Then, the line feed amounts of the received line feed commands are combined.

[0008]

In the line feed amount synthesizing method of the printer, means for synthesizing the line feed amount of the received line feed command, means for recognizing the operable amount from the current position of the printing paper to the paper end, and operation from the current position to the paper end By providing a means for comparing the possible amount with the line feed amount of the received line feed command, the line feed processing can be performed by combining the line feed amounts of a plurality of line feed commands. As a result, the line feed processing of a plurality of line feed commands can be performed by a single paper feed operation, thus improving processing efficiency. Further, since the paper end is taken into consideration when the line feed is started, the paper end is not generated during the paper feeding operation of the combined line feed amount.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 shows an overall view of the line feed amount synthesizing method. When a line feed command is transmitted from the higher-level device 1 connected to the printer device 2, the printer device 2 performs the following processing.

First, means 1 for recognizing receipt of a line feed command
0 recognizes the reception of the line feed command transmitted from the higher-level device 1. The means 10 for recognizing the reception of the line feed command uses the line feed amount of the received line feed command as output information and the input information of the means 30 for executing line feed processing according to the line feed amount. The paper feed mechanism 40 is a means 30 for executing line feed processing according to the line feed amount.
Using, the paper feed operation for the specified line feed amount is performed. After the paper feeding operation is completed, the printer device 2 transmits the completion information to the higher-level device 1 and waits for the next data reception.

When a single line feed command is received in this way, it waits for the next data at the end of the paper feed operation as in the conventional system. However, when the processing of a plurality of line feed commands is executed, the processing from the reception of the line feed command to the end of the paper feed processing is repeated, so that the paper feed mechanism 40 operates continuously during the line feed processing, and the paper feed mechanism is overheated. May occur. In the present invention, in consideration of the above reason and performance improvement, when processing a plurality of line feed commands, the line feed amounts are combined.

The composition of the line feed amount is performed by receiving the next line feed command even while the line feed processing by the first line feed command is received. The line feed amount of the received line feed command is combined by the time the first line feed process ends, and the line feed amount of the combined line feed amount is performed when the first line feed process ends. Next, referring to FIG. 1, a method of synthesizing the line feed amount is shown. When the printer device 2 receives the line feed command transmitted from the higher-level device 1, the means 10 for recognizing the line feed command reception recognizes the reception of the line feed command, and executes the line feed processing according to the line feed amount using the line feed amount of the line feed command as input information. Means 3
Start 0. Means 3 to execute line feed processing according to line feed amount
When 0, the paper feed operation is performed by the amount of line feed specified by the paper feed mechanism 40. When the line feed command from the host device 1 is received again during the paper feed operation, the means 10 for recognizing the line feed command reception determines whether the paper feed operation is being performed. If the paper feed operation is not in progress, the line feed amount of the line feed command is used as input information and the means 30 for executing the line feed processing according to the line feed amount is started. However, since the paper feed operation is being performed, the line feed processing is executed according to the line feed amount. The means 2 for synthesizing the line feed amount of the received line feed command without activating the means 30
The line feed amount synthesized by 1 is held. Since the line feed amount here is the first line feed command received during the paper feed operation, it is not combined with the line feed amount of the received line feed command, and the line feed amount is held. When a line feed command from the host device 1 is received again in this state, the means 21 for synthesizing the line feed amount of the received line feed command synthesizes the held line feed amount with the line feed amount of the received line feed command again and holds it. I'll do it. Next, by using a paper end (hereinafter abbreviated as PE) sensor 60 that detects the presence or absence of print paper, the means 22 for recognizing the operable amount from the current print paper position to the PE operates from the current position to the PE. Recognize the possible amount. Means 23 for comparing the operable amount from the current position to the PE with the line feed combined amount of the received line feed command,
The line feed amount synthesized by the means 21 for synthesizing the line feed amount of the received line feed command is compared with the operable amount from the current position to the PE recognized by the means 22 for recognizing the operable amount from the current print sheet position to the PE. To do. The operable amount from the current position to the PE recognized by the means 22 for recognizing the operable amount from the current print sheet position to the PE is larger than the combined line amount by the means 21 for synthesizing the received line feed command. If they are equal, the combined line feed amount is retained. When the paper feeding operation that is currently in progress is completed, the means 30 for executing a line feed process according to the line feed amount is activated by using the stored line feed amount that has been combined as input information. The means 30 for executing line feed processing according to the line feed amount performs a paper feed operation for the line feed amount combined by using the paper feed mechanism 40.

Further, the operation from the current position to the PE recognized by the means 22 for recognizing the operable amount from the current print sheet position to the PE based on the line feed amount synthesized by the means 21 for synthesizing the line feed amount of the received line feed command. If the possible amount is smaller, PE is detected when the paper feed operation is performed.
Do not retain the combined line feed amount. In this case, the line feed amount synthesized once is divided again into the line feed amount that was conventionally held and the line feed amount of the line feed command received later. In this way, when the line feed amount cannot be combined, after the paper feed operation that is currently in progress is completed, the held line feed amount is specified using the paper feed mechanism 40 by the means 30 that executes line feed processing according to the line feed amount. The next line feed command is not recognized until the paper feed operation for the line feed amount is completed.

FIG. 2 shows a method in which line feed amounts are not combined when a plurality of line feed commands are processed on a cut sheet, and the paper feed operation will be described using the print head 50. First, the print position before the paper feeding operation is A, the print position after the first paper feeding operation is B, the print position after the second paper feeding operation is C, and the print position after the third paper feeding operation is D. And Further, when the line feed amount of one line feed command is 1, the paper feed operation of the line feed amount l is performed in the line feed processing of the first line feed command at the position A, and the line feed command moves to the position B. 1
After the completion of the paper feed operation of the second time, the second line feed command is received at the position B, the paper feed operation of the line feed amount 1 is performed, and the position is moved to the position C. After the second paper feeding operation is completed, the same processing is performed by the third and fourth line feed commands to shift to the positions D and E. Next, when a line feed command is received at the position F, the paper feed operation of the line feed amount 1 is performed in the same manner, but PE becomes PE.
After ejecting this print sheet, set the print position for the next print sheet.

FIG. 3 shows a method of the present invention for synthesizing line feed amounts when processing a plurality of line feed commands, which will be described in comparison with FIG. First, the printing position before the paper feeding operation is A, and the printing position after the first paper feeding operation is B. Assuming that the line feed amount of one line feed command is l, the paper feed operation of the line feed amount l is performed at the position A at the first line feed command line feed processing, and the process moves to the position B. When the second line feed command is received during the first paper feed operation, the line feed amount 1 is held. When the third line feed command is received in this state, the line feed amount l of the second line feed command held and the line feed amount l of the third line feed command are combined, and the combined line feed amount 2l is held. deep. At this time, since the operable amount from the current position to the PE is larger than the combined line feed amount 2l, the combined line feed amount 2l is valid. Similarly, when the fourth line feed command is received,
The combined line feed amount 2l that has been held and the line feed amount l of the fourth line feed command are combined, and the combined line feed amount 3l is held. Also at this time, since the operable amount from the current position to the PE is larger than the combined line feed amount 3l, the combined line feed amount 3l is valid. When the first paper feeding operation is completed, the line feed processing of the combined line feed amount 3l that is held is performed, and the process moves to the position E. When the operable amount from the current position to the PE is smaller than the combined line feed amount, the combined line feed amount is invalidated, and even if the line feed amount is combined, the paper feed operation is performed only up to the position F. When the line feed command is received at the position F, the paper feed operation of the line feed amount 1 is performed, but since PE is performed, the print position is set for the next print sheet after discharging the main print sheet as in the conventional case. FIG. 4 shows a flowchart of the line feed amount combining process. First, the means 10 for recognizing the reception of a line feed command determines whether or not the line feed command has been received. If no line feed command is received, the line feed amount combining process ends. If a line feed command is received, the line feed amount of the received line feed command is saved. Next, it is determined whether or not the paper feeding operation is in progress. If the paper feeding operation is not in progress, the means 30 for executing the line feed processing according to the line feed amount of the received line feed command which is being saved performs the line feed processing and ends the processing. . If the paper feed operation is in progress, the means 21 for synthesizing the line feed amount of the received line feed command and the line feed amount of the received line feed command recognized by the means 10 for recognizing the line feed command reception 21 Synthesizes. Further, the means 23 for comparing the operable amount from the current position to the PE with the line feed composing amount of the received line feed command compares the operable amount and the line feed composing amount. When the line feed combined amount is larger than the operable amount, the means 30 for executing the line feed processing according to the line feed amount with the held line feed amount performs the line feed processing and ends the processing. When the line feed composition amount is smaller than or equal to the operable amount, the means 30 for executing line feed processing according to the line feed composition amount performs line feed processing and ends the processing.

[0017]

According to the present invention, the following effects can be obtained in the line feed amount synthesizing method of the printer.

(1) Since line feed amounts of a plurality of line feed commands can be combined to perform line feed processing with one paper feed operation, line feed processing capability is improved.

(2) Since line feed processing is performed by comparing the movable amount from the current position of the printing paper to the paper end and the synthesized line feed amount, the line feed amount after the paper end is detected may be synthesized and discarded. Instead, line break processing can be performed.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a line feed operation when line feed amounts are not combined.

FIG. 3 is an explanatory diagram of a line feed operation when a line feed amount is combined.

FIG. 4 is a flowchart of line feed amount combining processing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Host device, 2 ... Printer device, 10 ... Recognizing means for receiving a line feed command, 21 ... Line feed amount synthesizing means, 22 ... Operable amount recognizing means, 23 ... Comparison means, 30 ... Line feed processing executing means, 40 ... Paper feed Mechanism, 50 ... Print head, 60 ... Paper end sensor.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadato Kanai 1070 Ige, Katsuta-shi, Ibaraki Hitachi Ltd. Mito Plant (72) Inventor Hideo Ebizawa 4-3 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi Techno Engineering Within the corporation

Claims (1)

[Claims] Claim: What is claimed is: 1. A high-order device, and a printer device that, when connected to the high-order device, receives a new-line command, and a paper feed mechanism performs a new-line process for a specified new-line amount. Means for synthesizing the line feed amount of the line feed command, a paper end sensor for detecting the presence or absence of print paper, and means for recognizing the operable amount from the current position of the print paper to the paper end,
A line feed amount synthesizing method for a printer, comprising means for comparing an operable amount from the current position to the paper end and a line feed amount of the received line feed command and means for executing the line feed processing according to the line feed amount. .