JPS62149450A - Slip sheet printing method - Google Patents

Abstract

PURPOSE:To enable plural sheets to be duplicated and printed with high-quality printing while maintaining noise at low level with a miniaturized device manufactured at low cost by designating duplicated printing or ordinary printing of data according to the number of duplicated sheets or thickness of paper medium, and when duplicated printing has been selected, printing in such a way that a pattern such as character is at least double-printed. CONSTITUTION:If a medium is sucked or set, input data for deciding the number of duplication sheets (or paper thickness) is set. Based on this input data, a duplication printing available/unavailable decision circuit 5 determines the number of duplication sheets. At that time, paper thickness is converted to number of duplication sheets data, and the duplication printing available/unavailable decision circuit 5 determines a value higher or lower than a slice level (in this case, 4 sheets) in accordance with impact capacity of a dot head. In the case of duplication printing, this is repeated until the completion of the printing, while in the case of ordinary printing, it is repeated until the completion of printing. Then the medium is discharged upon the end of printing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a form printing method for printing forms in an impact format, and particularly to a printing method for printing on forms with a large number of copies or thick paper.

(Conventional technology) A form printing machine usually handles various types of forms.

The print head and the like of a form printing machine must be designed in consideration of cases where multiple copies are required, cases where thick forms are used, etc. That is, conventional form printing machines use large print heads with strong printing pressure (impact force) when it is necessary to handle forms with a large number of copies or forms with thick paper.

(Problems to be Solved by the Invention) However, when such a large print head is used, it not only becomes an obstacle to downsizing and lowering the cost of the device, but also generally does not require a strong impact force. A strong impact force is generated even when three sheets of forms are printed, which causes noise generation. Additionally, although printing that requires strong printing pressure (4 to 5 sheets of stacked forms) is normally required infrequently, providing a large print head is not just about the size of the print head. , various margins associated with this will be secured in advance,
It is extremely uneconomical.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a form printing method that can copy multiple sheets of forms and print high-quality prints while maintaining the size and cost of the device and reducing noise. do.

(Means for Solving the Problems) The present invention relates to a form printing method that prints data in an impact format on a printable medium.

In such a form printing method, the present invention firstly specifies whether to perform double printing or normal printing depending on the number of copies or the paper thickness of the medium when printing data; In the case of double printing once on 2, the pattern is printed so that a pattern such as a character is printed at least twice.

(Operation) When duplicate printing is specified, the print head prints the same pattern such as printed characters at least twice at the same position or at a slightly shifted position. For example, after the first printing operation of a certain character, the print head remains at that position and performs the second printing operation to print the same pattern as this printing.On the other hand, if 1 normal printing is specified, the character etc. pattern is performed in one printing operation.

In this way, it is possible to perform copy printing on a plurality of sheets and high-quality printing on thick media using a print head whose performance is approximately the same as the printing pressure normally required for printing.

(Example) An embodiment of the present invention will be described in detail below.

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

In the figure, reference numeral 1 denotes a message discrimination circuit that discriminates a message transmitted from a host device (not shown). This message follows the format described later and includes data on the paper thickness of the medium or the number of copies. Reference numeral 2 denotes a key force discrimination circuit for determining the force applied to the keys from the keyboard 11. Paper thickness or number of copies
This can be specified manually using keys from the keyboard 11.

Reference numeral 3 denotes a medium type mark reading circuit that determines the paper thickness of the medium or the number of copies based on the result of optically reading the medium type mark printed on the form using the photosensor 12. Reference numeral 4 denotes an automatic paper thickness detection circuit that automatically detects the paper thickness based on the output signal from the paper thickness detection sensor 13.

As described above, by selecting any one of the four circuits, input data regarding the paper thickness of the form or the number of copies can be obtained.

5 is a circuit for determining the presence/absence of duplicate printing based on this input data, specifically.

The input data is processed to determine the slice level for presence/absence of overlapping printing in accordance with the impact force of the print head. 6
is the main control section that controls the entire device. 7 is a print control unit which receives print control specifications from the main control unit 6, specifically, suction amount specification, duplicate printing presence/absence specification, line feed amount specification, print data, discharge specification, etc.; ．． It controls the carriage control section 9 and paper feed control section 10.

Next, the operation of this embodiment will be explained.

First, the operation when input data is specified by a telegram will be described with reference to FIGS. 2 to 4. Here, FIG. 2 is a diagram showing an example of a partial copy sheet, FIG. 3 is a diagram showing an example of a received message format, and FIG. 4 is an operation flowchart of duplicate printing by specifying a message. First, a transaction item is specified manually using a terminal device, and necessary transaction data is input (step 100 in FIG. 4). Next, the terminal device inserts the corresponding medium into the printer (step 101). Here, media handled by the terminal device include forms and continuous paper, and the size, number of copies, or paper thickness of each is determined for each transaction. For example, a money transfer request form at a certain financial institution is B5 in size and has 4 copies.

Next, the transaction data input in step 100 is transmitted to the host device (step 102). The host device processes the received transaction data and sends the print data to the terminal device in a format that matches the transaction details and the type of medium (according to the medium specification from the terminal device or the medium specification at the host device) (step 103). ). Here, the form may be a partial copy as shown in FIG. 2, a complete copy, or a single sheet. For example, in the case of partial copying, it is necessary to target only the copy area for duplicate printing according to the format of the form. In order to satisfy this requirement, the format used when sending print data from the host device must be changed to, for example, the third
Configure as shown in the figure. In the figure, the 1st byte specifies the printing position of the 1st line by specifying the media suction amount, and the 2nd byte specifies duplicate printing (for example, 0'' indicates no duplicate printing, 1'' indicates duplicate printing), and so on. Print data, line feed data,
Duplicate printing specification followed by print data. In this way, by adding duplicate print designation data to the beginning of one line of print data, it is possible to print only the necessary portions redundantly, and it is possible to prevent a decrease in processing speed. Of course, in the case of a single sheet or full copy, the designation of duplicate printing is specified separately.

When the message discriminating circuit 1 receives the print data according to the above format (step 104), the message discriminating circuit 1 discriminates the received message. The main control unit 6 first extracts the intake amount of the designated medium from the determined received message and sends it to the print control unit 7. and.

The print control unit 7 drives the paper feed control unit 10 to suck in a specified amount of the medium (step 105). Next, the duplicate print presence/absence discrimination circuit 5 detects duplicate prints from the received message determined by the message discrimination circuit 1. It is determined whether or not printing is designated, and a slice level corresponding to the impact capacity of the print head is determined and sent to the main control unit 6 (step 106). The main control unit 6 sends the slice level, print data, etc. corresponding to the presence/absence of duplicate printing designation to the print control unit 7. Then, the print control unit 7 drives the print head unit 8 and the carriage control unit 9 to perform the duplication printing method (in the case of a dot printer) shown in FIGS. 6 to 8 described below when one duplication printing is specified. Follow one of them.

Duplicate printing is performed in steps 107 and 108.

Here, FIG. 6 shows the dot pattern shown in (a) as shown in (b).
After printing once at the printing timing shown in (c), when printing again after double printing or carriage return, a method is shown in which printing is performed at the same printing timing as the first printing timing, as shown in (c). Figure 7 shows the dot pattern (b)
After printing once at the timing shown in (C), when printing again after repeat printing or carriage return, a method is shown in which the printing timing is shifted by a time A1 as shown in (C). FIG. 8 shows a method in which when printing a dot pattern, the space speed of the print head is made low, and after printing once, the same data is printed again by At.

These methods can be used to control a mother-type printer as well.

On the other hand, if there is no duplicate printing specified in step 106, normal printing operation is performed (step 109), step 1
When printing of the corresponding part is completed at 08 or 109,
Paper feed control unit 10 by the specified amount of line feed sent from message discrimination circuit 1 via main control unit 6 and print control unit 7
advances the medium (step 110). Step 10
The operations from 6 to 110 are repeated until the printing is finished (step 111), and when the printing is finished, the medium is ejected (step 112), and the transaction operation ends.

Next, input data for the number of copies or paper thickness of the media can be entered manually, by identifying the media type mark, or by automatically detecting the paper thickness (in either case, by operating the terminal device). The operation of (1) will be explained with reference to the operation flowchart of FIG. First, when the medium is inhaled or set (step 200), steps 201-
In any one of steps 203, input data for determining the number of copies (or paper thickness) is formed. Based on these input data, the duplicate printing existence/non-printing determination circuit 5 determines the number of copies (step 204). At this time, the paper thickness is converted into the number of copies. Then, the M double printing presence/absence determination circuit 5 determines whether the slice level (4 sheets in this example) is higher than or equal to or lower than the slice level according to the impact ability of the dot head (step 205). In case of duplicate printing, steps 206-2
Repeated printing is repeated until printing is completed in step 08, and in the case of normal printing, normal printing is repeated until printing is completed in steps 209 to 211. Then, when printing is completed, the medium is ejected (step 212). Note that for duplicate printing, one of the three methods described above is selected.

As described above, the printing operation according to the operation flowchart shown in Fig. 5 performs overlap printing or normal printing on a medium-by-medium basis, without switching between overlap printing or normal printing for each line as in the case shown in Fig. 4. .

(Effects of the Invention) As explained above, according to the present invention, either duplicate printing or normal printing is selected depending on the number of copies of the form and paper thickness, and when duplicate printing is performed, the same characters, etc. Since the pattern is struck at least twice, it is possible to obtain clear copies and prints even with the impact force of normal printing, and it is possible to realize miniaturization of the device, lower power consumption, lower cost, and lower noise.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the hardware configuration of an embodiment of the present invention, FIG. 2 is a diagram showing an example of partial copy paper, FIG. 3 is a diagram showing an example of the received message format, and FIG. 4 is a diagram showing the upper FIG. 5 is an operation flowchart when the number of copies or paper thickness is specified on the loading device side, and FIGS. 6 to 8 are flowcharts for explaining duplicate printing according to this embodiment. It is a diagram. 1...Telegram discrimination circuit, 2...Key human power discrimination circuit,
3...Media type mark reading circuit. 4...Automatic paper thickness detection circuit, 5...Double printing presence/absence discrimination circuit. 6... Main control section, 7... Printing control section, 8.
...Print head section. 9... Carriage control section, 10... Paper feed control section.

Claims (1)

[Claims] In a form printing method that prints data in an impact format on a printable medium, when printing data, whether to perform double printing or normal printing depending on the number of copies or the paper thickness of the medium. A form printing method that is characterized in that, when double printing is performed, the pattern of characters, etc. is printed at least twice.