JPS63205264A - Printing apparatus - Google Patents

Abstract

PURPOSE:To cut paper at the start end of a page without generating a non- printing part at the head of the page, by providing a temporary stop means for temporarily stopping a printing head and a feed motor when the start end of the page reaches a paper cutting off position during printing. CONSTITUTION:When the printing of the digital image data of a page memory 5 corresponding to one page is finished, it is judged whether printing is one copy mode and, at the time of the one copy mode, a feed motor is further driven to feed roll paper 51 to a paper cutting-off position. By a temporary stop means for temporarily stopping a printing head and the feed motor when the start end of the page reaches the paper cutting-off position during printing, the paper can be cut at the start end of the page by a cutter 7 without generating non-printed part at the head of the page.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing device, and particularly to a printing device that prints while feeding roll paper.

[Conventional technology]

In conventional printing devices that print while feeding roll paper, there are generally two positions: the print head placement position (hereinafter referred to as the print position) and the placement position of the cutter that cuts the roll paper (hereinafter referred to as the paper cutting position). ), when printing for one page is completed, the roll paper is automatically fed by the distance between the printing position and the paper cutting position so that the roll paper can be cut. Ta.

[Problem that the invention seeks to solve]

In the conventional printing device described above, when printing for one page is completed, the roll paper is automatically fed by the distance between the printing position and the paper cutting position. When printing the next side, the roll paper is always added as a non-print part to the top of the next page, and in some cases, it may be necessary to remove the non-print part at the top of the page, or the roll paper may be wasted. There was a problem that

In view of the above-mentioned points, an object of the present invention is to provide a temporary stop means for temporarily stopping the print head and feed motor when the starting edge of the page reaches the paper cutting position during printing. An object of the present invention is to provide a printing device that can perform vapor cutting at the starting edge of a page without creating a portion.

[Means for solving problems]

The printing apparatus of the present invention is a printing apparatus in which the position of the print head and the paper cutting position are separated from each other, and the print head is driven to print while the roll paper is fed by a feed motor. The apparatus is characterized in that it includes a temporary stop means for temporarily stopping the print head and the feed motor when the starting edge reaches the paper cutting position.

[Effect]

In the printing device of the present invention, when the starting edge of the page reaches the paper cutting position during printing, the pause means temporarily stops the print head and the feed motor, thereby enabling vapor cutting of the roll paper at the starting edge of the page. .

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing a printing apparatus according to an embodiment of the present invention. It is connected.

In this printing device, for example, an A4-sized document read by a document reading section 2 is enlarged by four times vertically and horizontally by an enlargement printing section 1, and printed as an AO-sized enlarged copy.

The enlarged print unit 1 is mounted on a support frame 4, and its main body is housed in a housing consisting of a fixed base 5 (see FIG. 3) and a movable lid member 6.

As shown in FIG. 3, on the fixed base 5, there is a platen 1 whose cross section is in the shape of a double peak at the right half position in the figure.
0 is fixed horizontally in the left-right direction, and a paper roll storage recess 5a for storing a paper roll 50 on which an AO version roll paper 51 is wound is provided at the rear half position.

The platen 10 is a long rod 1 having a cross-sectional shape of a double peak.
1, a platen rubber 12 affixed to the circumferential surface including the double peak position on the upper surface side of the rod 11, and a composite material having an extremely small coefficient of friction affixed to the surfaces of the platen rubber 12 and the rod 11, although not particularly shown. It is composed of a resin coating. Note that the front end side of the rod 11 extends as a guide plate portion 11a for the roll paper 51, and the guide plate portion 11a
A blade support member 14 made of synthetic resin or the like is embedded in the upper surface of the cutter to receive the blade of a cutter to be described later. In this blade holder, the position of the member 14 is the paper cutting position.

The reason why the platen 10 is formed to have a double-peaked cross-sectional shape is because there is currently no equipment for manufacturing a long roller-shaped platen, and the line thermal head 2
Since the curvature of the portion where 03 to 20d are pressed is specified in advance, it is necessary to include a plurality of peak-like portions that satisfy such curvature, and the feed roller 302
This is because consideration was given to feeding the paper while bringing the platen IO into pressure contact with the platen IO.

At both left and right ends of the platen 10, as shown in FIG.
Fixed side plates 13 are each fixedly provided. Fixed side plate 13
A support shaft 16 is implanted near the front end of the outer surface of the cover, and a movable lid member locking lever 15 is rotatably pivoted to this support shaft 16. And this movable lid member locking lever 1
5 is rotated clockwise (in FIG. 4) around a support shaft 16 by a compressible coil spring 17 whose one end is secured to the movable lid member locking lever 15 and the other end is secured to the fixed side plate 13. It is energized as follows. The rotation of the movable lid member locking lever 15 by the coil spring 17 is regulated at a predetermined position by the engagement between the bent piece 15b of the movable lid member locking lever 15 and the opening 13a of the side plate 13. A tip hook portion 15a is formed at the upper end of the movable lid member locking lever 15 and engages with a locking pin 61 implanted on the inner surface of the rotating side plate 52.

As shown in FIG. 3, a paper roll 50 can be removably and rotatably arranged in the paper roll storage section 5a of the fixed base 5. As shown in FIG. The roll paper 51 of the paper roll 50 is formed of a hot paper that can be printed by the line thermal heads 20a to 20d.

As shown in FIG. 3, the movable lid member 6 has three parts: a front die-cast part 61, a rear sheet metal part 62, and a front end sheet metal part 63.
It consists of two parts.

In the front die-casting part 61, a roll paper guide part 61a, a line thermal head attachment part 61b, and an urging adjustment means arrangement part 61C are integrally formed in order from the rear side.

The line thermal head mounting portion 61b includes a platen 10.
A plurality of (four in this embodiment) line thermal heads 20a to 20d are attached so as to be in pressure contact with the surface of the double peak position via the roll 51 of the AO plate.

The line thermal heads 20a to 20d are planar line thermal heads, and half of the line thermal heads 20a and 20c are in pressure contact with the rear peak of the platen 10, and the remaining half of the line thermal heads 20b and 20c are in pressure contact with the rear peak of the platen 10.
d are respectively attached to the line thermal head attachment portion 61b so as to be in pressure contact with the front peak portion. As a result, the line thermal radars 208 to 20d are connected to the platen 1.
They are arranged in a staggered manner with different arrangement angles relative to 0.

In this way, a plurality of line thermal heads 202 to 20d
The reason for arranging them in a staggered manner is that there is currently no line thermal head that can print across the entire width of an AO size, and that arranging multiple line thermal heads 20a to 20d in a straight line does not allow for each print. This was done in consideration of the possibility that there would be areas on both ends of the line thermal head that could not be printed.

As a result of arranging a plurality of line thermal heads 20a to 20d in a staggered manner with different arrangement angles relative to the platen IO, the timing of providing print control information to the line thermal heads 20a and 20c of the preceding phase and the line of the following phase can be changed. Thermal heads 20b and 20
Needless to say, it is necessary to shift the timing of giving print control information for d by the amount of the phase difference. In addition, the line thermal heads 202 to 20d are A4
When printing on an AO size roll G51 based on digital image information read from a size original at a density of 8 dots/mm, the magnification rate is 400%, so 2 dots/m2.
A recording density of m is sufficient. In addition, 8 dots/m
Of course, it is also possible to drive a plurality of adjacent dots for one dot of digital image information by using a line thermal radar having a recording density such as (m, 12 dots) / mm. .

A plurality of (four in this embodiment) feed rollers 30a to 30d are provided in the biasing adjustment means arrangement portion 61C of the movable lid member 6 so as to press against the surface of the platen 10 via the roll 51 of the AO plate. A biasing adjustment means for biasing is arranged.

The feed rollers 302 to 30d have a structure in which an elastic body such as rubber is fixed to the circumferential surface of a feed shaft 31, and although the feed shaft 31 is not particularly shown, there is a rotary side plate 52 on the front slope of the platen 10. It is inserted into a pair of left and right oval guide shaft holes that are diagonally bored so as to be substantially perpendicular to each other, and is prevented from being removed by a bushing. The feed shaft 31 is thus arranged slidably within the guide shaft hole.

Furthermore, the feed shaft 31 is tilted in the direction in which the feed rollers 30a to 30d are pressed against the platen 10 at multiple locations including the rear end by a plurality of bias adjustment means arranged at equal intervals in the shaft length direction. energized.

As shown in FIG.
1, a biasing member 33 having a semi-ring shape in cross section;
The main parts thereof include a biasing spring 34 that biases the biasing member 33 in a direction to press against the platen 10, and an adjustment screw 35 that adjusts the biasing force of the biasing spring 34.

A stop hole 33a into which one end of the urging spring 34 is inserted is bored on the rear surface of the urging member 33, and a small-diameter tip of an adjustment screw 35 that passes through the urging spring 34 is inserted into the stop hole 33a. The spring 34 is slightly fitted in to the extent that the parts do not butt each other, thereby preventing the biasing spring 34 from buckling.

The adjustment screw 35 is screwed into a threaded hole carved in a bias adjustment means arrangement portion 61C integrally formed on the inner side wall of the movable lid member 6, and is prevented from loosening by a locking nut 36.

At one end of the feed shaft 31 protruding from the rotating side plate 52,
As shown in FIG. 4, a feed pulley 38 is fixed to the timing belt 39.
and is connected to an output gear 42 attached to an output shaft 41a of a feed motor 41 via a reduction gear mechanism 40.

The tension of the timing belt 39 is adjusted by a tension adjustment mechanism 45, and the tension of the timing belt 39 is adjusted by a tension adjustment mechanism 45.
The hook is passed to the feed pulley 38 via an idle gear 42 that changes the direction of the load applied to the feed pulley 38.

As shown in FIG. 3, a circuit board 45, a transformer 46, etc. are disposed on the rear sheet metal portion 62 of the movable lid member 6.
These are shielded by a decorative plate 47 so as not to be exposed to the outside when the movable lid member 6 is opened.

A recess 64 is formed on the front end surface side of the movable lid member 6, and a cutter 7 is disposed within the recess 64 so as to be slidable in the left-right direction and movable in the vertical direction. When this cutter 7 is pressed from above, the blade (ryJ not shown) attached to the lower end enters the extended position of the roll 51 corresponding to the member 14, and at this position. By sliding the cutter 7 in the left and right direction, the roll 51 can be cut at the paper cutting position.

The fixed base 5 and the movable lid member 6 are, as shown in FIG.
A rotating support shaft is pivotally supported near the rear end of the fixed side plate 13. A rotating side plate 52 is fixed to both sides of the inner surface of the movable lid member 6.
are rotatably attached and connected to each other.

As shown in FIG. 4, the fixed plate 19, which is raised after being extended left and right from the fixed side vi13, has a pin 22 near the front end that engages one end of a compressible energizing coil spring 21. is implanted therein, and a cam pin 24 that is fitted into the cam elongated hole 23a of the arc-shaped cam member 23 is implanted in the middle. The other end of the biasing coil spring 21 is engaged with a pin 25 embedded in the free end of the arc-shaped cam member 23. The base end of the 0-circular cam member 23 is embedded in the rotating side plate 52. It is swingably attached to a support shaft 26 provided therein.

The cam elongated hole 23a of the arcuate cam member 23 includes an intermediate step 23b formed near the base end and a tip step 23C formed near the free end.

On the movable lid member 6, as shown in FIG. 2, an operation panel 70 of the enlarged print section 1 is provided.

On the operation panel 70, as shown enlarged in FIG. 5, there is a mode changeover (MODF, CHANGE) switch 71. FEED switch 72° STOP switch 73 and START
) switches 74 are provided respectively. In addition, light emitting diodes 753 to 75f emit light to indicate power-on status, error status, temporary stop status for cutting roll paper, etc.
are provided for each.

The mode changeover switch 71 has two modes: a 1-copy pause mode in which the page is paused to cut the blank space at the top of the page during printing, and the paper is automatically fed from the printing position to the paper cutting position at the end of printing; The 1-copy continuous mode automatically feeds the paper from the printing position to the paper cutting position at the end of printing without pausing to cut the blank area at the top of the page, and the blank area at the top of the page is automatically fed during printing. and a multi-copy pause mode that pauses to cant continuous copies and does not feed the paper from the print position to the paper cutting position when printing is finished, and a multi-copy pause mode that cuts the blank area at the top of the page and continuous copies during printing. This is an operating member for selecting one of the multi-copy, one-continuous mode, which does not temporarily stop the process, and does not feed the paper from the printing position to the paper cutting position at the end of printing.

Hereinafter, the 1-copy, 1-continuous mode and the multiple-copy, 1-continuous mode will be collectively referred to as continuous mode, and the 1-copy, 1-continuous mode and 1-copy pause mode will be collectively referred to as 1-copy mode, as appropriate.

When the mode changeover switch 71 is pressed down, the light emitting diodes 75c to 75f turn on cyclically in sequence to select one copy pause mode, one copy one continuous mode, multiple copy pause mode, and multiple copy one continuous mode. are cyclically selected in sequence.

Mode selection switch 71. The feed switch 72, the stop switch 73 and the start switch 74 are
As shown in the figure, each central processing unit (CPU)
69. Also, although not particularly shown,
The drive circuit for the light emitting diodes 753 to 75f is also the CPU 69.
It is connected to the.

The CPU 69 further includes an image reading section 2. page memory 6
5. It is connected to the clock generation circuit 66 and the feed motor 41, and also to each data latch and shift register 67a to 67d of each line thermal head 20a to 20d, and each data latch and shift register 673 to 67d is connected to each It is connected to each driver and head 68a to 68d of the line thermal heads 20a to 20d, respectively.

Referring to FIG. 7, in the printing apparatus of this embodiment, the main routine processing related to the mode changeover switch 71 and the start switch 74 includes a print mode change determination step 81, a 1-copy pause mode determination step 82, and a 1-copy pause mode determination step 82. Copy one continuous mode setting step 83;
1 copy, 1 continuous mode determination step 84, multiple copy temporary stop mode setting step 85, multiple copy temporary stop mode determination step 86, multiple copy 1 continuous mode setting step 87, 1 copy temporary stop mode setting step 88, Print start determination step 89, print initialization step 91, data transfer to data launch & shift register step 92, driver and head drive step 93, and sub-scanning counter increment.
/bu 94 and feed motor 1 line feed routine 95
, an end determination step 96 , a 1 copy 1 mode determination step 97 , and a paper feed step 98 .

Referring to FIG. 8, the processing in the feed motor one line feed routine 95 includes continuous mode determination step 10.
1, a temporary stop position detection step 102, a data latch & data transfer step 103 to the shift register, a driver & head drive step 104, a sub-scanning counter increment step 105, a data latch &
Data transfer step 106 to shift register, driver and head drive step 107, sub-scanning counter increment step 108, print restart determination step 109, feed motor 1 line feed step 1
It consists of 10.

On the other hand, as shown in FIG. 1, the image reading unit 2 opens the lid member 2a, places the original on a document table (not shown), closes the lid member 2a again, and presses the reading switch 2b. When operated, the image of the document is read as digital image information by a built-in line image sensor (not shown). The image reading section 2 can transfer the read digital image information to the enlarged print section 1 via a cable 3.

Next, the operation of the printing apparatus of this embodiment configured as described above will be explained.

First, to insert the roll paper 51 into the enlarged print section 1, take the movable lid member locking lever 15 that protrudes from the lower side of the fixed base 5 and move it toward you (counterclockwise in FIG. 4). Rotate. Then, the tip hook portion 15a of the movable lid member locking lever 15 disengages from the locking pin 61, and the free end of the arc-shaped cam member 23 is pulled by the elasticity of the biasing coil spring 21, and the cam elongated hole is pulled. 23a and the cam pin 24, the movable lid member 6 rotates counterclockwise (in FIG. 4) about the rotation support shaft 18. Then, the cam pin 24 is engaged with the intermediate step portion 23b of the cam elongated hole 23a, and the movable lid member 6 is temporarily locked in the half-open position shown by the two-dot chain line in FIG.

If you put your hand on the movable lid member 6 from the half-open state of the movable lid member 6 and pull the movable lid member 6 toward you, the cam pin 2
4 climbs over the intermediate step 23b of the cam elongated hole 23a and finally enters the tip step 23c of the cam elongated hole 23H, and the movable lid member 6 is temporarily in the fully open position shown by the solid line in FIG. It will be locked in.

In the fully open position of the movable lid member 6, the line thermal rads 20a to 20d and the feed rollers 30a to 30d
The user stores the paper roll 50 in the paper roll storage section 5a, pulls out the tip of the roll paper 51 from the paper roll 50, spreads it along the platen 10, and pulls it out to the front side. be able to. By doing this, the roll paper 51 can be placed in the enlarged print section 1.

In addition, when the movable lid member 6 is in the fully open position, the line thermal heads 20a to 20d, the feed rollers 30a to 30d,
Since the platen 10 and the like are exposed to the outside, maintenance such as repair and replacement can be easily performed. Furthermore, by removing the decorative board 47, maintenance of the circuit board 45 and the like can be easily performed.

When the front side of the movable lid member 6 is pressed from above in the state where the roll paper 51 can be sent, the movable lid member 6 resists the elasticity of the biasing coil spring 21 via the arcuate cam member 23 and rotates around the pivot shaft 18. As shown in FIG. 4, it is rotated clockwise. Then, the movable lid member locking lever 15 is slightly rotated counterclockwise so that the locking pier 61 implanted in the rotating side plate 52 gets over the tip hook portion 15a of the movable lid member locking lever 15. Coil spring 1 of movable lid member locking lever 15
7 in the clockwise direction, the locking pin 61 is locked, and the movable lid member 6 is locked in the closed position. As a result, the line thermal heads 20a to 20d and the feed rollers 30a to 30d are brought into pressure contact with the platen 10 via the roll paper 51, and the roll paper 51 is set in the enlarged print section 1.

When the enlarged print section 1 is powered on, the main routine shown in FIG. 7 is started. In the main routine, it is first determined whether or not the mode changeover switch 71 has been pressed to instruct a change in print mode (step 81). If the mode changeover switch 71 has not been pressed down, the process moves to step 89. When the mode changeover switch 71 is pressed down, it is then determined whether or not the mode is currently in the 1-copy pause mode (step 82
). If it is 1 copy pause mode, set the mode to 1 copy 1 continuous mode and proceed to step 89 (Step 83); if not 1 copy pause mode, check whether it is currently in 1 copy 1 continuous mode. is determined (step 84). If it is 1 copy 1 continuous mode, set the mode to multi-copy pause mode and proceed to step 85), if not 1 copy 1 continuous mode,
It is determined whether or not the current mode is multi-copy temporary stop mode (step 86). If it is multi-copy temporary stop mode, the mode is set to multi-copy single continuous mode and step 8
If the mode is not multi-copy pause mode, the process proceeds to step 89 (step 88). In step 89, the start switch 74 is pressed. I am watching to see if there is an instruction to start printing.
As long as the start switch 74 is not pressed, the process returns to step 81.

Next, when the cover member 2a of the document reading section 2 is opened, the document is placed on the document table, the cover member 2a is closed again, and the reading switch 2b is pressed down, the line image sensor built in the document reading section 2 scans the original and transfers the digital mol image@information of the original to the enlarged print section 1 via the cable 3.

In the enlarged print section 1, the CPU 69 temporarily stores and holds the digital image information transferred from the document reading section 2 on the page memory 65.

When the start switch 74 is pressed with the roll paper 51 placed in the enlarged print section 1 and the digital image information of the original document stored in the page memory 65, the determination in step 89 of the main routine shown in FIG. 7 becomes YES. , the print operation is started.

First, initialization processing such as zero clearing of the sub-scanning counter is performed (step 91), and then the page memory 65
1 to data latch & shift registers 67a to 67d
Data for the line is transferred (step 92), and the drivers and heads 68a to 68d are driven (step 9).
3) It goes without saying that the phase difference based on the difference in the arrangement positions of the line thermal heads 20a to 20d in the sub-scanning direction is taken into consideration.

Subsequently, the sub-scanning counter is incremented by +1 (step 94), and the feed motor one line feed routine 95 is activated.

In the feed motor one line feed routine 95, it is first determined whether or not the mode is continuous mode (step 101).
, if the mode is continuous mode, the process jumps to step 110. If it is not the continuous mode, it is determined whether the count of the sub-scanning counter is a value indicating a pause position (step 102 >
, if the value does not indicate a temporary stop position, the process jumps to step 110. If the value indicates a temporary stop position, the data is transferred to the data latch and shift registers 671 to 67d (step 1O3), the drivers and heads 68a to 68d are driven (step 104), and the sub-scanning counter is incremented by +1. (Step 105). Step 10
After the same processes as steps 3 to 105 (steps 106 to 108) are repeated, it is monitored whether printing is restarted by pressing the start switch 74 (step 109).

In this way, in the printing apparatus of this embodiment, after experimentally verifying that the operation delay of the feed motor 41 for the line thermal heads 20a to 20d is equivalent to two lines, I am trying to print the data for 1 minute in advance. Note that the line thermal head 20a~ which is experimentally verified
If the delay in the operation of the feed motor 41 with respect to 20d is other than two lines, data for the corresponding number of lines may be printed in advance after the feed motor 41 is temporarily stopped.

When the start switch 74 is pressed while in the watching state for restarting printing, the feed motor 41 is driven by one line in step 110. When the feed motor 41 rotates, the output shaft 41a and the output gear 42
．． Reduction gear mechanism 40. The feed shaft 31 is rotated via the timing belt 39 and the feed boob IJ38. As a result, the feed rollers 30a to 30d rotate and the roll paper 51 is fed.

Then, the processing of the feed motor one line feed routine 95 is completed, and the process returns to the main routine.

In the main routine, when control returns from the feed motor one line feed routine 95, it is determined whether the printing operation is finished by checking the value of the sub-scanning counter (step 96). If the printing operation is not completed, the process returns to step 92 and repeats the process.

When the digital image information for one page in the page memory 65 has been printed, it is determined whether the mode is 1 copy mode (step 97). If the mode is 1 copy mode, the feed motor 41 is further driven. After the roll paper 51 is fed to the paper cutting position, the process returns to step 81 (step 98), and if it is not the 1 copy mode, the process immediately returns to step 81.

If you wish to stop the printing operation in the middle of printing one page of digital image information, press the stop switch 73 and the feed motor 4 will stop at that point.
1 and the driving of the line thermal heads 208 to 20d are stopped.

Further, when it is desired to feed only the roll paper 51 without printing, if the feed switch 72 is pressed down, the feed motor 41 is rotated and the roll paper 51 is fed only while the depression operation continues.

By the way, in order for the line thermal heads 20a to 20d to print on the roll paper 51, it is necessary to maintain a contact pressure equal to or higher than a predetermined contact pressure.
In order for the feed rollers 302 to 30d to feed the roll paper 51, a frictional force that is greater than the above contact pressure must be applied to the roll paper 51. Therefore, the feed rollers 302 to 30d
The contact pressure against the platen 10 also needs to be greater than a predetermined contact pressure. Thereby, the feed shaft 31 becomes more easily bent and curved.

For this reason, due to the curvature of the feed shaft 31, the light rollers 308 to 30d near the center do not come into contact with the roll paper 51 with a contact pressure greater than the contact pressure required for feeding the roll paper 51, and the light rollers 308 to 30d near the center do not come into contact with the roll paper 51 with a contact pressure greater than the contact pressure required for feeding the roll paper 51, and the light rollers 308 to 30d near the center do not come into contact with the roll paper 51 at the contact pressure greater than the contact pressure required for feeding the roll paper 51. If the feeding speed of the roll paper 51 is uneven between the center and the center, the roll paper 51 may jam, become wrinkled, or be fed diagonally, preventing normal printing. do not have. In such a case, by removing the front end sheet metal part 63 of the movable lid member 6 and rotating the locking nut 36 from the outside, the biasing force applied by the biasing spring 34 to the feed shaft 31 will be adjusted, and the force applied to the feed roller 31 will be adjusted. 30a to 30d can be made to come into pressure contact with the platen 10 evenly in the axial direction. If you do this,
As the contact pressure for feeding the roll paper 51 becomes uniform in the line direction, the roll paper 51 will not jam, wrinkle, or be fed diagonally, and normal printing can be performed. become.

Note that the biasing spring 34 is attached to the feed rollers 30a to 30d.
If it comes into too much pressure contact with the platen 10, the load on the feed motor 41 will increase and the roll paper 51 will no longer be fed, so it also serves to buffer against such too much pressure contact. Further, the biasing spring 34 is applied to the feed rollers 30a to 30
When d is formed eccentrically to the feed axis 3I,
It also serves to absorb fluctuations in contact pressure due to eccentricity.

Incidentally, in the above embodiment, the printing apparatus is an enlarged copying machine, but the present invention is not limited to this, and the present invention is applicable to all printing apparatuses that perform printing while feeding roll paper.

〔Effect of the invention〕

As explained above, according to the present invention, by providing a temporary stop function that temporarily stops the print head and feed motor when the starting edge of the page reaches the paper cutting position during printing, the It is possible to cut the paper at the beginning of the page without creating a non-print area, which eliminates the need to remove the non-print area at the beginning of the page, and also reduces wasteful consumption of roll paper. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part showing an open state of a movable lid member in a printing device according to an embodiment of the present invention, and FIG. 2 is a main part showing an enlarged printing section of the printing device shown in FIG. 1. Fig. 3 is a sectional view showing the internal structure of the enlarged print section shown in Fig. 2, Fig. 4 is a side view of the main parts of the enlarged print section shown in Fig. 2, and Fig. 5 is a fragmented plan view. , a plan view showing an enlarged view of the scanning panel shown in FIG. , a flowchart showing the main routine processing in the enlarged print unit shown in FIG. 2, and FIG. 8 a flowchart showing more detailed processing of the feed motor one line feeding routine shown in FIG. In the figure, 1...Enlarged print section, 2...Document reading section, 3...Cable, 4...Support frame, 5...Fixed base, 6...Movable lid member, 7...Force 7, 10...Platen, 13...Fixed side plate, 15...Movable lid member locking lever , 18...
Rotation support shaft, 19... Fixed plate, 20a to 20d, line thermal head, 21...
- Biasing coil spring, 23... Arc-shaped cam member, 23a... Cam long hole, 24... Cam bin, 26... Support shaft, 303 to 30d - Feed roller, 31... Feed shaft, 38... Feed pulley, 41... Feed motor, 50... Paper roll, 51... Roll paper, 61... ...Lock pin, 65...Page memory, 69...CPU. 71...mode selection switch, 72...feed switch, 73...stop switch, 74...start switch. Figure 7 Figure 8

Claims (1)

[Claims] In a printing device in which the position of the print head and the paper cutting position are separated from each other, and the roll paper is fed by a feed motor and the print head is driven to perform printing, the starting edge of the page is detected during printing. 1. A printing apparatus comprising: a temporary stop means for temporarily stopping the print head and the feed motor when the print head reaches the paper cutting position.