JP2011093084A - Printer with cutter, and method of controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer with a cutter, securing safety when opening or closing an opening and closing lid having a movable blade attached thereto. <P>SOLUTION: The roll paper printer 1 includes: a stationary blade 28 fixed to a printer body 2; and the movable blade 15 attached to a platen frame 21 of the opening and closing lid 5. The roll paper printer has an auto cutter 14 with the movable blade 15 attached to the open side of the opening and closing lid 5 with respect to the stationary blade 28; and a recording paper guide member 32 fixed to the printer body 2 and installed in a position adjacent to the open side of the opening and closing lid 5 from the movable blade 15. When the operation of opening the opening and closing lid 5 during movement of the movable blade 15 to a cutting start position 15C, the movable blade 15 protruded toward the stationary blade 28 and the recording paper guide member 32 interfere with each other. Consequently, the movement of the opening and closing lid 5 is restricted to prevent the opening and closing lid 5 from opening. The movable blade 15 protruded toward the stationary blade 28 is thereby not exposed outside of the printer body 2. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a printer with a cutter in which a fixed blade is attached to a printer body and a movable blade is attached to an opening / closing lid attached to the printer body so as to be opened and closed. More specifically, the present invention relates to a printer with a cutter that can ensure safety when opening and closing an open / close lid to which a movable blade is attached.

  The roll paper printer with a cutter transports a long recording paper fed out from the roll paper along a recording paper transport path from the roll paper storage unit to the recording paper discharge port via the printing position and the cutting position. At the printing position, printing is performed on the recording paper by the print head, and at the cutting position, the recording paper is cut by an auto cutter. The auto cutter is equipped with a pair of fixed blades and movable blades whose cutting edges are directed to the recording paper conveyance path at the cutting position, and the movable blades are in a standby state where the cutting edges are opposed to the fixed blades at a predetermined interval. It is possible to move between the position and the cutting end position where the cutting edge overlaps with the fixed blade in the entire region.

  Such a roll paper printer with a cutter is described in Patent Document 1, for example. In the roll paper printer with a cutter of the same document, the fixed blade is attached to the printer main body in which the roll paper storage unit is formed, and the movable blade is attached to the printer main body to be openable and closable to open and close the roll paper storage unit. Attached to the lid. The movable blade is disposed at the cutting position when the open / close lid is in the closed position closing the roll paper storage unit, and is moved from the cutting standby position toward the cutting end position when cutting the recording paper. .

JP 2001-121864 A

  In this document, since the movable blade is arranged on the opening side of the opening / closing lid with respect to the fixed blade, the movable blade and the fixed blade do not interfere when the opening / closing lid is opened. For this reason, even if the auto cutter breaks down during recording paper cutting and the movable blade falls into the locked state while moving from the cutting standby position to the cutting end position, the open / close lid can be opened. It has become.

  Here, if the open / close lid is opened while the movable blade is moved from the cutting standby position to the cutting end position, the movable blade is moved together with the open / close lid in a state of protruding from the open / close lid and exposed to the outside of the printer body. To do. For this reason, there is a risk that the blade tip of the movable blade touches the operator who opens the opening / closing lid.

  The subject of this invention is providing the printer with a cutter which can ensure the safety | security at the time of opening and closing the opening-and-closing lid | cover with which the movable blade was attached in view of such a point.

In order to solve the above problems, the printer with a cutter of the present invention is
An open / close lid attached to the printer body to be openable and closable;
A recording paper cutting device comprising a fixed blade attached to the printer body and a movable blade attached to the open / close lid, wherein the movable blade is located on the open side of the open / close lid with respect to the fixed blade;
An engagement member that is attached to the printer main body and is located at a position adjacent to the opening side of the open / close lid from the movable blade;
The engagement member does not interfere with the movable blade when the open / close lid is opened in a state where the movable blade is pulled into the open / close lid, and the open / close lid is in a state where the movable blade protrudes from the open / close lid. When the is opened, it interferes with the movable blade.

  According to the present invention, when the open / close lid is opened with the movable blade protruding from the open / close lid, the movable blade attached to the open / close lid interferes with the engaging member attached to the printer body, and the movement of the open / close lid is restricted. The That is, when the movable blade protrudes from the opening / closing lid, the opening / closing lid cannot be opened. Therefore, for example, when the auto cutter breaks down during cutting of the recording paper and the movable blade falls into the locked state while moving from the cutting standby position to the cutting end position, the movable blade is removed from the opening / closing lid. Since it is in a protruding state, the operator cannot open the lid. As a result, the movable blade protruding from the opening / closing lid does not move with the opening / closing lid and is not exposed to the outside of the printer body, so that the blade edge of the movable blade touches the operator who is opening the opening / closing lid. There is nothing. Therefore, safety when opening and closing the opening / closing lid can be secured.

  In the present invention, it is preferable that the engaging member includes a recording paper guide portion that guides the recording paper conveyed through between the fixed blade and the movable blade. In this way, since the recording paper can be guided by the engaging member, the number of parts constituting the printer with a cutter can be reduced.

In the present invention, when roll paper is used as recording paper, it has a roll paper storage section for storing roll paper, and the opening / closing lid can be an opening / closing lid for opening / closing the roll paper storage section. .
Further, the printer with a cutter of the present invention includes an opening / closing lid attached to the printer main body so as to be openable / closable, a print head, a fixed blade and a recording paper guide member arranged on the printer main body, a platen arranged on the opening / closing lid, and A movable blade, wherein the print head and the platen are disposed opposite to a printing position of the recording paper transport path portion, and the fixed blade and the movable blade are located at a position relative to the fixed blade of the recording paper transport path portion. Is disposed opposite to the cutting position located on the opening side of the opening / closing lid, and the fixed blade is displaceable to a standby position where the blade edge faces the blade edge of the movable blade and a retreat position where the blade edge faces the recording paper guide member. It is characterized by being.
According to the present invention, since the fixed blade can be displaced to the retracted position where the blade edge faces the recording paper guide member, it is possible to ensure safety when the operator opens the opening / closing lid and replaces the roll paper.
In the present invention, the fixed blade and the movable blade constitute a recording paper cutting device, and the recording paper cutting device includes a movable blade driving mechanism that drives the movable blade, an upper frame, and a lower frame, and the platen Is disposed on the open / close lid via a platen frame, the movable blade and the movable blade drive mechanism are disposed on the platen frame via the lower frame, and the fixed blade and the recording paper guide member are It is desirable that the printer main body is disposed via the upper frame.
In the present invention, the fixed blade is urged to the retracted position, and protrusions are formed on both sides of the blade edge of the movable blade in the printer width direction, and the movable blade is formed on both sides of the blade edge of the fixed blade in the printer width direction. A contact portion that contacts the protruding portion of the movable blade is formed, and the protruding portion of the movable blade and the contact portion of the fixed blade are in contact with each other in a state where the open / close lid is closed, and the fixed blade is positioned at the standby position. desirable.
In the present invention, the recording paper guide member includes a guide plate portion having a lower end surface positioned below the cutting edge of the fixed blade, the lower end surface positioned below the cutting edge of the fixed blade, and an end portion of the movable blade. It is desirable that the inclined plate portion is close to the front surface and the mounting plate portion is attached to the upper frame, and the cutting edge of the fixed blade is close to the inclined plate portion at the retracted position.
In the method for controlling a printer with a cutter according to the present invention, an image or an image including characters is recorded on a recording paper by a print head, the recording paper is conveyed by a paper transport unit, and the image is recorded by the print head. A method of controlling a printer with a cutter that cuts the recording paper by a recording paper cutting device including a fixed blade and a movable blade, wherein a pair of protrusions formed on both sides of the blade edge of the movable blade in the printer width direction, A pair of contact portions formed on both sides of the blade edge of the fixed blade in the printer width direction are contacted, the fixed blade is displaced from a retracted position to a standby position, and the movable blade is configured such that the movable blade has a blade edge of the fixed blade. The cutting edge of the movable blade moves from the cutting start position at which the cutting edge partially overlaps toward the cutting end start position at which the entire area of the cutting edge of the fixed blade overlaps.
According to the present invention, the fixed blade can be controlled to be easily displaceable between a standby position where the blade edge faces the blade edge of the movable blade and a retracted position where the blade edge faces the recording paper guide member.
In the present invention, the movable blade is disposed on an opening / closing lid attached to the printer main body, the fixed blade is disposed on the printer main body, and the opening / closing lid is closed, whereby the printer at the cutting edge of the movable blade is disposed. A pair of projecting portions formed on both sides in the width direction come into contact with a pair of contact portions formed on both sides in the printer width direction of the blade edge of the fixed blade, and the fixed blade is displaced from the retracted position to the standby position. Is desirable.
In the present invention, it is preferable that the fixed blade displaces the fixed blade from the retracted position to the standby position by opening the opening / closing lid to release the contact between the protruding portion and the contact portion.

According to the present invention, when the open / close lid is opened with the movable blade protruding from the open / close lid, the movable blade attached to the open / close lid interferes with the engaging member attached to the printer body, and the movement of the open / close lid is restricted. The That is, when the movable blade protrudes from the opening / closing lid, the opening / closing lid cannot be opened. As a result, the movable blade protruding from the opening / closing lid does not move with the opening / closing lid and is not exposed to the outside of the printer body, so that safety when opening / closing the opening / closing lid can be ensured.
Further, since the open / close lid can be opened with the fixed blade displaced to the retracted position where the blade edge faces the recording paper guide member, it is possible to ensure safety when the operator opens the open / close lid and replaces the roll paper.

1 is an external perspective view of a roll paper printer with a cutter according to the present invention. It is a schematic sectional drawing of a roll paper printer with a cutter. It is a perspective view of an auto cutter unit. It is the front view and sectional drawing of a recording paper guide member and an auto cutter unit. It is explanatory drawing for demonstrating a movable blade drive mechanism. It is the front view and sectional drawing of a recording paper guide member and an auto cutter unit. It is the front view and sectional drawing of a recording paper guide member and an auto cutter unit. It is a longitudinal cross-sectional view of the cutting position periphery at the time of opening operation of an opening-and-closing lid.

  Hereinafter, an embodiment of a roll paper printer with a cutter to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is an external perspective view of a roll paper printer with a cutter. 1A shows a state where the opening / closing lid is in the closed position, and FIG. 1B shows a state where the opening / closing lid is in the open position. A roll paper printer 1 with a cutter is an ink jet printer that performs color printing on a long recording paper fed out from a roll paper, and includes a printer body 2 that has a rectangular parallelepiped shape as a whole as shown in FIG. ing. An opening 4a of a roll paper storage unit 4 for storing the roll paper 3 (see FIG. 2) is formed in the center of the front surface of the printer main body 2, and the opening 4a is attached to the printer main body 2 so as to be openable and closable. The closed lid 5 is closed. A recording paper discharge guide 6 is attached to the upper end of the opening / closing lid 5, and a recording paper discharge port 7 is formed between the recording paper discharge guide 6 and the upper edge portion of the opening 4 a of the printer body 2. Yes. A power switch 8, a paper feed switch 9, a plurality of operation state display lamps 10, and the like are arranged on the right side of the opening / closing lid 5 of the printer body 2. A mounting port 11a of an ink cartridge mounting part 11 for mounting an ink cartridge is opened on the left side portion of the opening / closing lid 5 of the printer body 2, and the ink cartridge 12 is mounted on the ink cartridge mounting part 11 from this opening. ing.

  When the lock (not shown) is released and the recording paper discharge guide 6 of the opening / closing lid 5 is put on the finger and pulled forward, the opening / closing lid 5 is tilted forward from the closed position 5A shown in FIG. It is possible to open up to the opening position 5B shown in FIG. With the opening operation of opening the opening / closing lid 5 from the closed position 5 </ b> A, the movable blade 15 constituting the platen 13 and the auto cutter 14 moves together with the opening / closing lid 5 to the front of the printer main body 2. As a result, the recording paper transport path 16 from the roll paper storage unit 4 to the recording paper discharge port 7 is opened, so that the loading operation of the roll paper 3 can be easily performed from the front of the printer.

(Internal structure)
FIG. 2 is a schematic cross-sectional view of the printer main body, showing a state in which roll paper is loaded in the roll paper storage unit and the open / close lid is in the closed position. As shown in FIG. 2, a roll paper storage unit 4 is formed in the center of the printer body 2. The roll paper 3 is loaded in the roll paper storage unit 4 in a horizontally placed state with its central axis facing the printer width direction. The long recording paper 3 a fed out from the roll paper 3 extends obliquely upward toward the rear of the printer via the feeding roller 17, and is then bent forward by the tension roller 18. The paper is transported along a recording paper transport path 16 extending to the recording paper discharge port 7. The tension roller 18 is urged toward the rear of the printer by a spring force, and a predetermined tension is applied to the recording paper 3 a that has passed through the tension roller 18.

  A recording paper transport path portion 16 a extending in the front-rear direction of the printer is located immediately above the roll paper storage unit 4. In the recording paper transport path portion 16a, a printing position A and a cutting position B are provided in this order from the rear side of the printer toward the front side of the printer. At the printing position A, the inkjet head 20 mounted on the carriage 19 and the platen 13 are opposed to each other with a certain gap so that the nozzle surface faces downward. The platen 13 is mounted on a platen frame 21 extending in the front-rear direction of the printer, and the printing position A of the inkjet head 20 is defined by the platen 13. A tension roller 18 is attached to the rear end portion of the platen frame 21. The carriage 19 is movable along a carriage guide shaft 22 spanned in the printer width direction, and is reciprocated by a carriage motor (not shown).

  In the recording paper conveyance path portion 16a, a paper feed driving roller 23 is disposed on the rear side of the printer of the platen 13, and a paper feed driven roller 24 is pressed against the paper feed driving roller 23 from below. . A paper discharge driving roller 25 is disposed between the printing position A and the cutting position B on the front side of the platen 13, and a paper discharge driven roller 26 is pressed against the paper discharge driving roller 25 from above. . The paper feed driving roller 23 and the paper discharge driven roller 26 are mounted on the printer main body 2, and the paper feed driven roller 24 and the paper discharge driving roller 25 are mounted on the platen frame 21.

  An auto cutter unit (recording paper cutting device) 27 is disposed at the cutting position B. The auto cutter unit 27 includes a pair of fixed blades 28 and a movable blade 15, an auto cutter 14 including a movable blade driving mechanism 29 that drives the movable blade 15 in a direction toward and away from the fixed blade 28, and recording paper An upper frame 30 and a lower frame 31 are provided above and below the conveyance path portion 16a.

  The upper frame 30 is bridged in the printer width direction at the front end portion of the printer main body 2, and the fixed blade 28 is attached to the upper frame 30 so that the blade stripe extends in the printer width direction. The fixed blade 28 has its cutting edge 28 a directed toward the recording paper conveyance path 16. The lower frame 31 is mounted on the front end portion of the platen frame 21, and the movable blade 15 is mounted on the lower frame 31 so that the blade line extends in the printer width direction. The movable blade 15 is disposed on the front side of the printer (the opening side of the opening / closing lid 5) with respect to the fixed blade 28, and the blade edge 15a faces the recording paper conveyance path 16.

  A recording paper guide member (engaging member) 32 extending in the printer width direction is disposed at a position adjacent to the front side of the movable blade 15 (opening side of the opening / closing lid 5). The recording paper guide member 32 is attached to the printer main body 2 via the upper frame 30.

  The platen frame 21 is attached to the opening / closing lid by connecting the front end portion thereof to the recording paper discharge guide 6. When the opening / closing lid 5 moves from the closed position 5A to the opened position 5B, the platen frame 21 moves together with the opening / closing lid 5. Then, it is pulled out from the printer body 2 to the front of the printer. When the opening / closing lid 5 is opened, components such as the platen 13 mounted on the platen frame 21, the movable blade 15, the movable blade driving mechanism 29, the tension roller 18, the paper feed driven roller 24, and the paper discharge driving roller 25 are opened and closed. Together with the printer, the roll paper storage unit 4 and the recording paper transport path 16 are opened.

  When the roll paper 3 is loaded into the roll paper storage unit 4, the roll paper 3 in a state in which the recording paper 3 a is pulled out through the space opened by opening the opening / closing lid 5 is loaded into the roll paper storage unit. 4 After that, when the opening / closing lid 5 is closed, components such as the platen 13, the movable blade 15, the movable blade drive mechanism 29, the tension roller 18, the paper feed driven roller 24, and the paper discharge drive roller 25 mounted on the platen frame 21. The recording paper conveyance path 16 is formed by returning to the original position, and the platen 13 faces the inkjet head 20 with a certain gap to define the printing position A, and the movable blade 15 is brought to the cutting position B. It will be in an arranged state. At the same time, the drawn recording paper 3 a is set in a state where it passes through the printing position A and the cutting position B on the platen 13 on the recording paper transport path 16.

  The recording paper 3 a drawn from the roll paper storage unit 4 to the recording paper conveyance path 16 is conveyed via the printing position A through the paper feeding driving roller 23 and the paper feeding driven roller 24. Printing is performed by the inkjet head 20 on the surface of the recording paper 3a. Further, the recording paper 3 a passes between the paper discharge driving roller 25 and the paper discharge driven roller 26 via the cutting position B, and is cut in the width direction by the auto cutter 14 at the cutting position B. A piece of recording paper of a certain length obtained by cutting is issued as a receipt.

(Auto cutter unit and recording paper guide member)
FIG. 3A is a cross-sectional view of the auto cutter unit as viewed from the front and obliquely above, and FIG. FIG. 4A is a partial front view of the auto cutter unit with the recording paper guide member attached thereto, and FIG. 4B is a cross-sectional view thereof. FIG. 4 shows a state where the movable blade is at the cutting standby position. 5A and 5B are explanatory diagrams for explaining the movable blade driving mechanism. FIG. 5A shows a state where the movable blade is in the cutting standby position, and FIG. 5B shows a state where the movable blade is in the cutting end position. Is shown.

  As shown in FIGS. 3 and 4, the upper frame 30 of the auto cutter unit 27 includes a top plate portion 30a extending in the front-rear direction of the printer, and a front plate portion 30b and a front plate portion extending downward from the front edge of the top plate portion 30a. A lower plate portion 30c extending from the lower end edge of 30b to the rear of the printer is provided.

  As shown in FIG. 4, the fixed blade 28 has a rectangular shape that is long in the printer width direction. A blade edge 28 a extending linearly is formed at the lower end edge of the fixed blade 28. On both sides of the blade edge 28a in the printer width direction, a pair of abutting portions (contact portions) 28b with which projecting portions of the movable blade 15 described later abut (contact) are formed. It is located outside the recording paper transport path 16 in the printer width direction. In addition, a pair of rectangular cutout portions 28c are provided at the upper edge portion of the fixed blade 28 in a symmetrical position in the printer width direction, and the upper edge central portion 28d between the pair of cutout portions 28c is located on the upper side. The top plate portion 30a of the frame 30 is attached to the central portion in the printer width direction.

  The fixed blade 28 attached to the upper frame 30 has a standby position 28A in which the blade edge 28a faces the recording paper conveyance path 16 at the cutting position B, with the upper edge central portion 28d as a swing center, and the blade edge 28a is a recording paper guide member 32. Is displaceable between a retracted position 28 </ b> B (a position indicated by a one-dot chain line in FIG. 4B) facing the recording paper guide member 32. Further, one end of the coil spring 33 is locked to the central portion of the fixed blade 28 in the printer width direction, and the other end of the coil spring 33 is an angle between the top plate portion 30a and the front plate portion 30b. Is attached to a locking portion 30d formed at a central portion in the printer width direction. The fixed blade 28 is biased toward the retracted position 28B by the coil spring 33.

  Here, as shown in FIG. 4, a recording paper guide member 32 is attached to the front plate portion 30b of the upper frame 30 from the front of the printer.

  The recording paper guide member 32 includes a guide plate portion 32a extending in the front-rear direction of the printer substantially parallel to the surface of the platen 13, and an inclined plate inclined upward from the rear edge of the guide plate portion 32a toward the rear of the printer. A portion 32b and a mounting plate portion 32c extending upward from the front edge of the guide plate portion 32a are provided. The rear end of the inclined plate portion 32b is located slightly in front of the printer with respect to the movable blade 15. When the fixed blade 28 is in the retracted position 28B, the cutting edge 28a of the fixed blade 28 faces the inclined plate portion 32b in the vicinity of the inclined plate portion 32b.

  An inclined surface 32e facing the lower end surface 32d of the guide plate portion 32a and the inclined plate portion 32b passes the surface of the recording paper 3a that has passed the cutting position B (the surface on the fixed blade 28 side) to the recording paper conveyance path 16. It becomes a guide surface to guide along. The lower end surface 32d is located below the cutting edge 28a of the fixed blade 28. Further, the lower end surface 32d is located below the lower end of the paper discharge driven roller 26, so that the operator can remove the front end portion of the recording paper 3a discharged from the recording paper discharge port 7 by the operator before cutting. For example, when the sheet is driven by the sheet, the sheet discharge driven roller 26 is prevented from being subjected to a load that moves the sheet discharge driven roller upward.

  In the recording paper guide member 32, the lower end edge portion of the mounting plate portion 32c, the guide plate portion 32a, and the inclined plate portion 32b are formed so that the dimensions in the printer width direction are shorter than the dimensions of the fixed blade 28 in the printer width direction. . In a state where the recording paper guide member 32 is attached to the upper frame 30, the recording paper guide member 32 covers the cutting edge 28a of the fixed blade 28 from the front of the printer, and a pair of contact portions provided on both sides of the cutting edge 28a. 28b is exposed in front of the printer.

  Next, as shown in FIGS. 3 and 4, the lower frame 31 of the auto cutter unit 27 is bridged between the left and right side plate portions 31 a and 31 b and the front end edges of the left and right side plate portions 31 a and 31 b. A front plate portion 31c and a bottom plate portion 31d spanning the lower end edges of the left and right side plate portions 31a and 31b are provided. A partition plate 34 is bridged in the middle of the left and right side plate portions 31a and 31b in the front-rear direction of the printer in parallel with the front plate portion 31c.

  The movable blade 15 is disposed on the rear side of the partition plate 34. The cutting edge shape of the movable blade 15 is such that the central portion in the printer width direction is depressed downward, and is inclined upward toward both ends. A groove-shaped notch 15b is formed at the center of the blade edge 15a. A pair of projecting portions 15c projecting upward is provided on both sides of the blade edge 15a in the printer width direction. The pair of protrusions 15c are located outside the recording paper transport path 16 in the printer width direction.

  The partition plate 34 is provided with a guide groove 34a extending in the vertical direction at a central portion in the printer width direction. A slider 35 is inserted into the guide groove 34a so as to be movable up and down along the guide groove 34a. The slider 35 is attached to the movable blade 15 by two upper and lower pins 36 and 37, so that the movable blade 15 can move in the vertical direction along the guide groove 34 a together with the slider 35.

  The movable blade drive mechanism 29 includes a cutter motor 38 disposed behind the partition plate 34 so that the output shaft extends in the printer width direction. The output shaft of the cutter motor 38 is connected to a drive gear 40 disposed on the front side of the partition plate 34 via a gear train 39 including a worm gear. The drive gear 40 is rotatable about a support shaft 41 attached to the front plate portion 31c, and the rotational movement of the drive gear 40 is converted into the reciprocating movement of the movable blade 15 in the vertical direction by the crank mechanism 42.

  As shown in FIG. 5, the crank mechanism 42 is formed with a crank pin 43 that is vertically attached to a position off the center of rotation on the circular end surface of the drive gear 40, and a linear first slide groove 44 a having a fixed length. Lever 44 is provided. The lever 44 is disposed on the front side of the partition plate 34 and can pivot in the vertical direction along the front end surface of the partition plate 34 around a support shaft 45 different from the support shaft 41 of the drive gear 40. The crank pin 43 is slidably inserted into the first slide groove 44a. When the crank pin 43 rotates once around the support shaft 41 as the drive gear 40 rotates, the crank pin 43 and the printer are moved in the vertical direction. Following the movement in the width direction, the lever 44 reciprocates in the vertical direction about the support shaft 45.

  The lever 44 is formed with a second slide groove 44b that is shorter than the first slide groove 44a. The upper pin 36 of the two pins 36 and 37 connecting the movable blade 15 and the slider 35 is inserted into the second slide groove 44b in a slidable state. When the second slide groove 44b reciprocates in the vertical direction as the lever 44 reciprocates in the vertical direction, the pin 36 reciprocates in the vertical direction following the reciprocation of the second slide groove 44b. Accordingly, the movable blade 15 has a cutting standby position 15A shown in FIG. 5A where the cutting edge 15a faces the cutting edge 28a of the fixed blade 28 at a predetermined interval, and the entire area of the cutting edge 15a is the fixed blade 28. It reciprocates once in the up-down direction between the cutting end position 15B shown in FIG.

(Recording paper cutting operation)
Next, the cutting operation of the recording paper 3a by the auto cutter 14 will be described with reference to FIGS. 6A is a partial front view of the auto cutter unit with the recording paper guide member attached thereto, and FIG. 6B is a cross-sectional view thereof. FIG. 6 shows a state where the movable blade is at the cutting start position. FIG. 7A is a partial front view of the auto cutter unit with the recording paper guide member attached thereto, and FIG. 7B is a cross-sectional view thereof. FIG. 7 shows a state where the movable blade is at the cutting end position. FIG. 8 is a longitudinal sectional view around the cutting position, and shows a state where the opening / closing lid is opened from the closed position when the movable blade is at the printing start position. In FIGS. 4 to 8, the recording paper conveyed through the cutting position is omitted.

  When the roll paper 3 is inserted into the roll paper storage unit 4 and the open / close lid 5 is closed, when the open / close lid 5 is closed at the closed position 5A, the pair of protrusions 15c on both sides of the cutting edge 15a of the movable blade 15 are fixed blades. The fixed blade 28 is displaced to the standby position 28 </ b> A against the urging force of the coil spring 33 by contacting the pair of contact portions 28 b on both sides of the blade edge 28 a of 28 from the front side of the printer. When the opening / closing lid 5 is positioned at the closed position 5A, the movable blade 15 is disposed at the cutting position B.

  At the cutting position B, the movable blade 15 is located at the cutting standby position 15A. At the cutting standby position 15A, the movable blade 15 is opposed to the cutting edge 28a of the fixed blade 28 at a predetermined interval, and is retracted downward from the recording paper conveyance path 16 (in a state of being drawn into the opening / closing lid 5). It has become.

  Next, when the recording paper 3a printed at the printing position A is conveyed and reaches the cutting position B, the movable blade 15 is moved from the cutting standby position 15A toward the cutting end position 15B by the movable blade driving mechanism 29. Be made. As shown in FIG. 6, when the movable blade 15 moves and the cutting edge 15a reaches the cutting start position 15C where the cutting edge 15a partially overlaps the cutting edge 28a of the fixed blade 28 from both sides in the printer width direction, the auto cutter 14 is moved to the cutting position. The recording paper 3a in B is started to be cut from both sides in the width direction. At the cutting start position 15C, the movable blade 15 is in a state of protruding into the recording paper conveyance path 16 (a state of protruding from the opening / closing lid 5).

  Thereafter, when the movable blade 15 reaches the cutting end position 15B, as shown in FIG. 7, the entire region of the blade edge 15a of the movable blade 15 and the blade edge 28a of the fixed blade 28 overlap, and the cutting of the recording paper 3a is completed. In this example, the notch 15b is formed at the center of the cutting edge 15a of the movable blade 15. Therefore, even if the entire area of the cutting edge 15a of the movable blade 15 and the cutting edge 28a of the fixed blade 28 overlap, the recording paper 3a is completely removed. This is a partial cut that leaves only a part of the center in the width direction without cutting. When the cutting of the recording paper 3a is completed, the movable blade 15 is returned to the cutting standby position 15A.

  Here, when the movable blade 15 moves to the cutting end position 15B side from the cutting start position 15C, the portion of the cutting edge 15a of the movable blade 15 that overlaps the cutting edge 28a of the fixed blade 28 is the lower end surface of the recording paper guide member 32. It will be in the state located above 32d. Accordingly, when the auto cutter 14 breaks down during the cutting operation of the recording paper 3a, and the movable blade 15 falls into the locked state where it protrudes further toward the cutting end position 15B than the cutting start position 15C, it opens and closes. When the lid 5 is opened from the closed position 5A, as shown in FIG. 8, when the movable blade 15 moves together with the opening / closing lid 5 from the cutting position B to the front side of the printer, the movable blade 15 protrudes into the recording paper conveyance path 16. And the inclined plate portion 32b of the recording paper guide member 32 interfere with each other, and the movement of the opening / closing lid 5 is restricted. As a result, since the opening / closing lid 5 cannot be opened, the movable blade 15 protruding from the opening / closing lid 5 toward the fixed blade 28 does not move together with the opening / closing lid 5 and is exposed to the outside of the printer body 2. The blade edge 15a of the movable blade 15 does not touch the operator who is performing the opening operation of the opening / closing lid 5. Therefore, safety when opening and closing the opening / closing lid 5 is ensured.

  If the movable blade 15 returns to the cutting standby position 15A after the recording paper cutting operation is completed, the movable blade 15 is in a state of being retracted from the recording paper conveyance path 16, so that the movable blade 15 and the recording paper guide member 32 are There is no interference. Therefore, the open / close lid 5 can be opened to the open position 5B.

(Other embodiments)
In the above example, when the movable blade 15 moves from the cutting start position 15C to the cutting end position 15B, the recording paper guide member 32 and the movable blade 15 interfere when the opening / closing lid 5 is opened. However, the recording paper guide member 32 and the movable blade 15 may interfere when the opening / closing lid 5 is opened in a state where the movable blade 15 has moved to the cutting end position 15B. In this case, the attachment position of the recording paper guide member 32 with respect to the upper frame 30 is changed to the upper side, and the positions of the guide plate portion 32a and the inclined plate portion 32b are moved upward. Further, the movable blade 15 is slightly moved from the cutting standby position 15A to the cutting end position 15B and the cutting edge 15a of the movable blade 15 protrudes into the recording paper conveyance path 16 (the cutting edge 15a is cut from the cutting start position 15C). The recording paper guide member 32 and the movable blade 15 can also be configured to interfere with each other when the opening / closing lid 5 is opened in a state of being positioned on the standby position 15A side). In this case, the attachment position of the recording paper guide member 32 to the upper frame 30 is changed to the lower side, and the positions of the guide plate portion 32a and the inclined plate portion 32b are moved downward.

  Further, in the above example, when the opening / closing lid 5 is opened, the movement of the opening / closing lid 5 is regulated by causing the recording paper guiding member 32 and the movable blade 15 to interfere with each other. The joint member may be attached to a position adjacent to the front side of the printer with respect to the movable blade 15 of the printer main body 2 so that the engaging member and the movable blade 15 interfere with each other.

  In the above example, the auto cutter 14 is of a type that linearly reciprocates in the direction in which the movable blade 15 approaches and separates from the fixed blade 28, but the movable blade approaches and separates from the fixed blade. Even when a vertical-type auto-cutter that swivels in a direction is used, when the fixed blade is attached to the printer body and the movable blade is attached to an opening / closing lid attached to the printer body so as to be openable and closable, the present invention Can be applied.

  1. Roll paper printer, 2. Printer body, 3. Roll paper, 3a, recording paper, 4. Roll paper storage, 4a, opening, 5. Opening / closing lid, 5A, closing position, 5B, opening position, 6. Recording paper discharge guide, 7-Recording paper discharge port, 8-Power switch, 9-Switch, 10-Operation status display lamp, 11-Ink cartridge mounting part, 11 a-Installation port, 12-Ink cartridge, 13-Platen, 14 -Auto cutter, 15-Movable blade, 15a-Cutting edge, 15b-Notch, 15c-Projection, 15A-Cutting standby position, 15B-Cutting end position, 15C-Cutting start position, 16-Recording paper transport path, 16a・ Recording paper conveyance path part, 17 ・ Feeding roller, 18 ・ Tension roller, 19 ・ Carriage, 20 ・ Inkjet head, 21 ・ Platen frame, 22 ・Carriage guide shaft, 23. Paper feed drive roller, 24. Paper feed driven roller, 25. Paper discharge drive roller, 26. Paper discharge driven roller, 27. Auto cutter unit, 28. Fixed blade, 28a, blade edge, 28b, contact Part, 28c / notch part, 28d / upper edge center part, 28A / standby position, 28B / retraction position, 29 / movable blade drive mechanism, 30 / upper frame, 30a / top plate part, 30b / front plate part, 30c・ Lower plate part, 30d ・ Locking part, 31 ・ Lower frame, 31a ・ 31b ・ Side plate part, 31c ・ Front plate part, 31d ・ Bottom plate part, 32 ・ Recording paper guide member, 32a ・ Guide plate part, 32b ・Inclined plate portion, 32c / mounting plate portion, 32d / lower end surface, 32e / inclined surface, 33 / coil spring, 34 / partition plate, 34a / guide groove, 35 / slider, 36/37 / 38, cutter motor, 39, gear train, 40, drive gear, 41, support shaft, 42, crank mechanism, 43, crank pin, 44a, first slide groove, 44b, second slide groove, 44, lever, 45, spindle, A, printing position, B, cutting position.

Claims (7)

An open / close lid attached to the printer main body so as to be openable and closable, a print head arranged on the printer main body, a fixed blade and a recording paper guide member, and a platen and a movable blade arranged on the open / close lid,
The print head and the platen are disposed opposite to the printing position of the recording paper conveyance path portion,
The fixed blade and the movable blade are disposed opposite to the cutting position where the movable blade is located on the opening side of the opening / closing lid with respect to the fixed blade of the recording paper conveyance path portion,
The printer with a cutter, wherein the fixed blade is displaceable between a standby position where the blade edge faces the blade edge of the movable blade and a retreat position where the blade edge faces the recording paper guide member. The fixed blade and the movable blade constitute a recording paper cutting device,
The recording paper cutting device includes a movable blade driving mechanism for driving the movable blade, an upper frame and a lower frame,
The platen is disposed on the opening / closing lid via a platen frame,
The movable blade and the movable blade drive mechanism are disposed on the platen frame via the lower frame,
The printer with a cutter according to claim 1, wherein the fixed blade and the recording paper guide member are arranged in the printer main body via the upper frame. The fixed blade is biased to the retracted position;
Projections are formed on both sides in the printer width direction of the blade edge of the movable blade,
Contact portions are formed on both sides of the blade edge of the fixed blade in the width direction of the printer so that the projecting portion of the movable blade contacts,
2. The printer with a cutter according to claim 1, wherein the projecting portion of the movable blade and the contact portion of the fixed blade are in contact with each other in a state in which the opening / closing lid is closed, and the fixed blade is located at the standby position. . The recording paper guide member includes a guide plate portion whose lower end surface is positioned below the blade edge of the fixed blade, an inclined plate portion whose end portion is close to the front surface of the movable blade, and an attachment plate portion attached to the upper frame. And
The printer with a cutter according to claim 4, wherein a blade edge of the fixed blade is close to the inclined plate portion at the retracted position. An image including images or characters is recorded on a recording paper by a print head, the recording paper is conveyed by a paper carrying unit, and the recording paper on which the image is recorded by the print head includes a fixed blade and a movable blade. A method for controlling a printer with a cutter, which is cut by a cutting device,
A pair of protrusions formed on both sides of the blade edge of the movable blade in the printer width direction are in contact with a pair of contact parts formed on both sides of the blade edge of the fixed blade in the printer width direction,
The fixed blade is displaced from the retracted position to the standby position,
The movable blade moves from a cutting start position at which the cutting edge of the movable blade partially overlaps the cutting edge of the fixed blade to a cutting end start position at which the entire area of the cutting edge of the fixed blade overlaps. A method for controlling a printer with a cutter, characterized in that: The movable blade is disposed on an opening / closing lid attached to the printer body,
The fixed blade is disposed in the printer main body, and when the opening / closing lid is closed, a pair of protrusions formed on both sides of the blade edge of the movable blade in the printer width direction are The method for controlling a printer with a cutter according to claim 5, wherein the fixed blade is displaced from a retracted position to a standby position by contacting a pair of contact portions formed on both sides of the printer.   6. The cutter according to claim 5, wherein when the opening / closing lid is opened, the contact between the protruding portion and the contact portion is released, and the fixed blade is displaced from a retracted position to a standby position. To control a printer with a printer.

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