JPH07102724B2 - Printer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a printing apparatus for printing on a printing paper having an obstacle on at least one of both sides along the paper feeding direction.

The conventional printing device disclosed in Japanese Patent Laid-Open No. 61-205162 will be described below with reference to FIGS.

FIG. 4 shows a block diagram of a control circuit of a conventional printing apparatus. The first storage section 11 receives print data sent from the data input buffer 10 and prints the leftmost and rightmost print digit positions of the print data. Memorize

The second storage unit 12 stores the leftmost and rightmost print digit positions in the print range of the already printed line. The comparison unit 13 compares the print digit positions stored in the first storage unit 11 and the second storage unit 12, and outputs the result to the control unit 14. The control unit 14 rewrites or holds the stored contents of the second storage unit in accordance with the output of the comparison unit 13, and the carriage drive motor 17 via the carriage drive circuit 16 and the paper feed drive circuit 19.
And drive control of the paper feed motor 20.

In addition, the first storage unit 11, the second storage unit 12, the comparison unit 1
3. The control unit 14 is composed of one CPU 15 (central processing unit).

The conventional printing apparatus is configured as described above and operates as follows as shown in FIG.

The print data of the first line L1 is read and the first line L1 is printed. Since the rightmost print digit position of the first row L1 is stored in the first storage unit 11 and nothing is stored in the second storage unit 12, the comparison unit 13 sets It is compared and judged that the print digit device stored in the storage unit 11 is larger. Based on the determination, the control unit 14 moves the carriage leftward by a predetermined amount A and then feeds the paper. Then, the rightmost print digit position of the first row L1 is stored in the second storage unit 12 as the rightmost print digit position of the already printed row.

Next, when the print data of the second row L2 is read, the carriage moves to the print start position and the second row L2 is printed. Here, the leftmost print digit position of the second line L2 is stored in the first storage unit 11, but nothing is stored in the second storage unit 12 as in the case of the first line L1. Therefore, the comparison unit 13 makes a comparison judgment that the print digit position stored in the first storage unit 11 is larger, and based on this judgment, the control unit 14 moves the carriage to the right by the predetermined amount A. Move to feed the paper. Then, in the second storage unit 12, the leftmost printing digit device of the second row L2 is stored as the leftmost printing digit position of the already printed row.

When the print data of the third line L3 is read and printed, the first
The storage section 11 stores the rightmost print digit position of the third row L3. On the other hand, the second storage unit 12 stores the rightmost print digit position of the first L1 as the rightmost print digit position during printing. As shown in FIG. 5, the right end of the third row L3 is the first row.
Since it is located on the right side of the row L1, the comparison unit 13 makes a comparison judgment that the print digit position of the first storage unit 11 is larger, and based on this judgment, the control unit 14 sets the carriage by the predetermined amount A. After moving to the left, feed the paper. And the second
The rightmost print digit position of the third line L3 is stored in the storage unit 12 as the rightmost print digit position in the already printed lines.

Since the left end of the next fourth row L4 is not located to the left of the left end of the second row as shown in FIG.
On the basis of the judgment, the control unit 14 makes a paper feed only based on the judgment that the print digit position stored in the storage unit 12 is larger. Since the right end of the next fifth line is not located to the right of the right end of the third line L3, only the sheet is fed.

Therefore, in the first row L1 and the second row L2, after the printing is completed, the carriage moves in the direction opposite to the printing direction, that is, in the direction away from the temporary binding portion, and thereafter the paper is fed. But,
For other print lines, if the rightmost or leftmost print digit position of the current print line exceeds the rightmost or leftmost print digit position of the already printed line, the carriage is moved and the paper is not fed. However, if it does not exceed the limit, only paper feed is performed, so printing is performed at high speed without lowering printing efficiency.

[Problems to be Solved by the Invention]

However, in the printing apparatus as described above, in FIG. 5, L4 of the 4th row is compared with the leftmost printing digit position of the 2nd row L2.
Even if the leftmost print digit position of the is only slightly right, for example, one or two digits, only the paper feed is performed. Therefore, when the leftmost print digit position of the second row L2 is the printable leftmost position, the carriage 23 is fed to the carriage 23 at the above position.

Therefore, there is a problem that the ribbon or the print head comes into contact with the temporary binding portion and damages the paper. The present invention is
The present invention has been made to solve the above problems, and provides a printing device capable of performing printing without touching a head or a ribbon on a temporary binding portion when printing on a sheet having a temporary binding portion by a stapler. The purpose is to do.

[Means for Solving the Problems]

In the present invention, in order to solve the above-mentioned problems, after carrying out one line printing while moving the carriage equipped with the print head in the line direction, the carriage is stopped and then the paper is fed in the direction orthogonal to the line direction. A printing device for performing, a generation means for generating a mode signal when using a printing paper having an obstacle on at least one of both sides along the paper feeding direction, and a feed signal for instructing the paper feeding after the completion of printing one line A paper feed signal generating means for generating, a discrimination means for discriminating the position of the carriage with respect to the left or right margin position set inside the obstacle portion, and a discrimination means at the time of inputting the mode signal and the feed signal. A control means for controlling the carriage and the paper feed according to the discrimination is provided.

[Action]

When the mode signal is generated, when the carriage left end or right end is located outside the margin position at the end of printing one line, set the carriage so that the carriage is located inside the margin position on the side with the obstacle. After the movement, the paper is fed by the paper feed signal.

〔Example〕

FIG. 1 is a block diagram of a printing apparatus showing an embodiment of the present invention. In FIG. 1, 1 is a paper stapler having an obstacle due to an input by a DIP switch provided in the printing apparatus or a print command. Mode signal generating means 2 for generating a mode signal for using a paper is a paper feeding signal generating means for generating a paper feeding signal by an operation panel switch or a print command.

A first discriminating unit 3 is one of the discriminating units and discriminates the printing direction.

Reference numeral 4 is a second discriminating means which is one of the discriminating means, and when the first discriminating means 3 discriminates the leftward printing, the print head is set to the right of the arbitrarily set left margin position. Specified width Xl (paper guide (carriage edge)
To the center of the head) is set in the first area.

Reference numeral 5 is a third discriminating means which is one of the discriminating means, and when the first discriminating means 3 discriminates the rightward printing, the print head is set to the left of the arbitrarily set write margin position. Specified width Xr (paper guide (carriage edge)
To the center of the head) is set in the second area.

The first discriminating means 3, the second discriminating means 4 and the third discriminating means 5 are constituted by software provided in a control unit including a CPU and a memory.

Reference numeral 6 is a paper feeding means, and 7 is a carriage driving means, each using a stepping motor as a driving source. Further, it is controlled by a control means (not shown).

The printer according to the embodiment of the present invention is configured as described above and operates as described below.

FIG. 2 is a flow chart for explaining the operation of the printing apparatus showing the embodiment of the present invention, and FIG. 3 is an operation explanatory view of the printing apparatus.

In Step 1, the paper stapled paper mode is selected by a command or the operation of the DIP switch. Here, the command is defined as one of the print mode designation codes in software control to cancel this mode when n = 0 for “ESC W n” and set this mode when n = 1. Done by.

In Step 2, a paper feed signal is generated by the paper feed signal generating means 2 such as a well-known operation on the operation panel or a command.

In Step 3, the first discriminating unit 3 discriminates the printing direction.

In Step 4, when it is determined that the printing direction is left in Step 3, the second discriminating unit 4 discriminates whether or not the carriage is located within the first area.

In Step 5, when it is determined in Step 4 that the carriage is in the first area, the carriage driving means 7 moves the carriage from the left margin position to the right by a predetermined digit Y.

Here, Y is an integer larger than X.

In Step 6, the paper feeding means 6 executes the paper feeding.

In Step 7, when it is determined in Step 4 that the carriage is not in the first area, the paper feed is executed as it is, and Step 8
Print with and return to Step 2.

In Step 9, when it is determined that the printing direction is right in Step 3, the third determining means 5 determines whether or not the carriage is in the second area.

In Step 10, when it is determined in Step 9 that the carriage is in the second area, the carriage driving means 7 moves the carriage from the right margin position to the left by a predetermined digit Y, and in Step 6, the paper is fed. To execute.

In Step 11, when it is determined in Step 9 that the carriage is not in the second area, the paper feed is executed as it is,
Print at 12 and return to Step 2.

In Step 13, it is determined whether or not all the printing work is completed. If printing is continued, the carriage is moved to the print position of the next line, and printing is executed in Step 15.

In Step 16, when the printing is completed in Step 13, set the carriage to FF.
Move to the (form feed) position and end.

Next, the operation will be described with reference to FIG. When the paper is fed after printing from the position A to the position B, the position B is within the second area (hatched portion), so that the position has a width of Yr (Yr> Xr) to the left of the right margin position. After moving to C, the paper is fed to print from position D to position E. Since E is outside the first area, the paper is fed as it is to print from the position F to the position G.

Since the position G is outside the second area, the paper is fed as it is to print from the position H to the position I. However, position I is the first
Since it is in the area (hatched portion), the paper is fed after moving to the position J having a width of Yl (Yl> Xl) from the left margin position to the right, and the printing of the next line is started from the position K.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, the present invention is suitable for printing on a paper having a paper stapled paper which is an obstruction on the surface without a paper guide, an ink ribbon or the like hitting the paper staple which is an obstruction during the paper feeding operation. Paper can be fed.

Further, since the print head determination range can be easily changed by changing the margin setting, it is possible to feed the paper corresponding to the obstacle portion of the paper. Further, since the carriage is moved within the range of each margin, it can be applied to paper guides of various sizes.

Further, by providing the mode signal generating means, the operation of the present invention can be executed by a simple command or operation of a DIP switch or the like.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow chart of the same embodiment, FIG. 3 is an operation explanatory view of the same embodiment, and FIG. 4 is a block diagram of a printer showing a conventional technique. FIG. 5 and FIG. 5 are explanatory diagrams of the operation of the device.
1 is a paper stapling paper mode signal generating means, 2 is a paper feed signal generating means, 3 is a first discriminating means, 4 is a second discriminating means,
Reference numeral 5 is a third discriminating means.

Claims (1)

[Claims] 1. A printer for printing a line while moving a carriage equipped with a print head in the line direction, and then feeding the carriage in a direction orthogonal to the line direction. Generating means for generating a mode signal when using a print sheet having an obstacle on at least one of both sides along the line, and a paper feed signal generating means for generating a feed signal for instructing the paper feed after the completion of printing one line, Discrimination means for discriminating the position of the carriage with respect to the left or right margin position set inside the obstacle portion for each, and a control for controlling the carriage and the paper feed by the discrimination means when the mode signal and the feed signal are input. When the mode signal is generated, the carriage left end or right end is positioned outside the margin position at the end of printing one line. Rutoki the printing apparatus being characterized in that to perform the paper feeding by the paper feed signal Move the carriage to position the carriage on the inside than the margin position on the side having the failure portion.