JP2020157549A - Cutter device and printer - Google Patents

Abstract

To provide a cutter device capable of preventing an end part of a record medium generated by a partial cut from contacting a fixed blade.SOLUTION: A cutter device comprises: a fixed blade with a first blade edge facing a first direction crossing a transfer direction of a record medium; a movable blade with a second blade edge facing a second direction being an opposite direction to the first direction, which can move to the first direction and the second direction, and which moves to the second direction to cut the record medium positioned between the first blade edge and the second blade edge, leaving a part of the record medium uncut; and a guide part. When the movable blade is positioned behind a position where the record medium is cut in the second direction, at least a part of the guide part is positioned at a guide position being a position protruding than the first blade edge in the first direction, or being at the same position as the first blade edge. The guide part moves in the second direction from the guide position by being pushed by the movable blade moving in the second direction. The movable blade and the guide part are positioned upstream of the fixed blade in the transfer direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to a cutter device for cutting a recording medium and a printer including the cutter device.

An inkjet printer with an auto-cutter is disclosed, which includes an auto-cutter arranged at a position adjacent to the inkjet head in the recording paper transport direction (see Patent Document 1).

According to the above document 1, the auto cutter includes a fixed blade arranged across a recording paper transport path and a movable blade located downstream of the fixed blade in the transport direction, and the movable blade is directed toward the fixed blade. When moved, the portion of the chart paper located between them is cut in the width direction.

Japanese Unexamined Patent Publication No. 2011-143601

In the above-described configuration, the recording medium is cut by moving the movable blade, leaving a part thereof uncut, and then backfeeding, which is a transfer from the downstream to the upstream in the transfer direction, is performed by the above-mentioned cutting. There was a risk that the end of the recording medium generated downstream of the fixed blade would hit the fixed blade.

The cutter device has a fixed blade whose first cutting edge is directed to a first direction intersecting the conveying direction of the recording medium, and a second cutting edge which is directed to a second direction opposite to the first direction. It is possible to move in one direction and the second direction, and by moving in the second direction, the recording medium located between the first cutting edge and the second cutting edge can be moved. When the movable blade that cuts with a part left uncut and the movable blade is located rearward in the second direction from the position where the recording medium is cut, at least a part of the movable blade is located behind the first cutting edge. The guide position is located at the position protruding in the first direction or the same position as the first cutting edge, and is pushed by the movable blade moving in the second direction to move from the guide position to the second direction. A guide portion that moves to is provided, and the movable blade and the guide portion are located upstream of the fixed blade in the transport direction.

The figure which shows the structure of the printer with the lid closed simply. The figure which shows the structure of the printer with the lid open simply. The figure for demonstrating the operation of the cutter apparatus which concerns on 1st Example. The figure which shows the partially cut recording medium from the viewpoint from above. A flowchart showing the recording process. The figure for demonstrating the cutter apparatus which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to each figure. Each figure is merely an example for explaining the present embodiment. Since each figure is an example, the shape and ratio may not be accurate, they may not be consistent with each other, or some parts may be omitted.

1. 1. Outline configuration of printer:
FIG. 1 simply shows the internal configuration of the printer 10 according to the present embodiment.
The printer 10 includes a cutter device 26. The printer 10 may be described as a printing device, a recording device, a liquid ejection device, and the like. The printer 10 generally has a printer main body 11 and a lid 12 that can open and close a part of the inside of the printer main body 11 with respect to the outside. FIG. 1 shows a state in which the lid 12 is closed. In FIG. 1, the boundary between the printer main body 11 and the lid 12 is illustrated by a broken line.

FIG. 2 shows the internal configuration of the printer 10 in the same manner as in FIG. However, FIG. 2 shows a state in which the lid 12 is open. Further, in FIG. 2, the internal configuration of the lid 12 shown in FIG. 1 is omitted. The specific mechanism for opening and closing the lid 12 with respect to the printer main body 11 is not particularly limited. In the examples of FIGS. 1 and 2, the lid 12 is connected to the printer main body 11 via a shaft 28 supported by the printer main body 11, and opens and closes with respect to the printer main body 11 by rotating around the shaft 28. It is a configuration to do. Alternatively, the lid 12 may be configured to be opened by being pulled out from the printer main body 11 in a certain direction and closed by being pushed back in the direction opposite to the certain direction. The printer main body 11 corresponds to a specific example of the first structure. Further, the lid 12 is a second structure different from the first structure, and corresponds to a specific example of the second structure whose posture with respect to the first structure can be changed.

The printer main body 11 includes a control unit 13, an accommodating unit 14, a recording head 15, a carriage 16, a fixed blade 19, a roller 24, and the like. The control unit 13 includes, for example, a CPU as a processor, a memory, and the like. The control unit 13 controls the printer 10 by the processor executing arithmetic processing according to the program stored in the memory. The processor is not limited to one CPU, but may be configured to perform processing by a plurality of CPUs or a hardware circuit such as an ASIC (Application Specific Integrated Circuit), or the CPU and the hardware circuit cooperate with each other. It may be configured to perform the processing.

The accommodating portion 14 forms a space for accommodating the recording medium 30. In the present embodiment, a long recording medium is assumed as the recording medium 30. A long recording medium is also called continuous paper. The roll paper main body 31 in which the recording medium 30 which is a long paper is wound in a roll shape is accommodated in the accommodating portion 14. The user accommodates the roll paper main body 31 in the accommodating portion 14 by opening the lid 12, and closes the lid 12. However, the recording medium 30 may be a material other than paper as long as it can be recorded by a recording agent such as ink or toner and can be cut by the cutter device 26.

According to FIG. 1, the lid 12 includes a roller 17, a platen 18, a movable blade 21, a movable blade driving unit 22, and the like. When the lid 12 is closed, a gap is created between the printer main body 11 and the lid 12 as a transport path for the recording medium 30. The arrow with reference numeral D3 indicates the direction of such a transport path, that is, the transport direction D3. The transport direction D3 is horizontal or tilted with respect to the horizontal. Here, it is assumed that the transport direction D3 is horizontal. The most downstream of the transport path is the discharge port 25, and the recording medium 30 is discharged from the discharge port 25 to the outside of the printer 10. The platen 18 forms part of the transport path. The platen 18 supports the recording medium 30 corresponding to the portion drawn out from the roll paper main body 31 to the transport path from below.

A roller pair of rollers 17 and 24 facing each other across the transport path is arranged at a position downstream of the platen 18 in the transport direction D3. The upstream and downstream of the transport direction D3 are hereinafter simply referred to as upstream and downstream. The rollers 17 and 24 convey the recording medium 30 by rotating while sandwiching the recording medium 30 between them. For example, of the rollers 17 and 24, the roller 17 arranged on the lid 12 is an active roller that rotates under the power of the transfer motor 27. On the other hand, of the rollers 17 and 24, the roller 24 arranged on the printer main body 11 is a driven roller that rotates according to the rotation of the active roller.

In the example of FIG. 1, the transport motor 27 that rotates the roller 17 is arranged inside the lid 12. However, the transfer motor 27 may be arranged in the printer main body 11.
A configuration including a transfer motor 27 and rollers 17 and 24 is called a transfer unit. That is, the transport unit transports the recording medium 30. Although not shown, the transport unit may have some rollers for transporting the recording medium 30 in addition to the rollers 17 and 24, for example, at a position upstream of the recording head 15. ..

A recording head 15 is arranged above the platen 18. The recording head 15 has a plurality of nozzles capable of ejecting ink, and records by an inkjet method. The recording head 15 may be described as a print head, a print head, a liquid discharge head, or the like. The recording head 15 receives ink from an ink cartridge (not shown). The recording head 15 is mounted on the carriage 16. The carriage 16 can reciprocate in parallel with the main scanning direction intersecting the transport direction D3. In FIGS. 1 and 2, the direction perpendicular to the planes of FIGS. 1 and 2 is the main scanning direction. In FIG. 3 and the like described later, the main scanning direction is indicated by an arrow with reference numeral D4. The recording head 15 records on the recording medium 30 supported by the platen 18 by ejecting ink from the nozzles as the carriage 16 moves.

The recording head 15 may be a so-called line head fixed in the printer main body 11 without being mounted on the carriage 16. That is, the recording head 15 has a nozzle array in which a plurality of nozzles are lined up over a range corresponding to the width of the recording medium 30 in the above-mentioned main scanning direction, and records on the recording medium 30 without moving. It may be. The carriage 16 is not required in the configuration in which the recording head 15 is a line head.

The fixed blade 19, the movable blade 21, and the guide portion 20 are arranged at positions downstream of the rollers 17 and 24. The cutter device 26 includes at least a fixed blade 19, a movable blade 21, and a guide portion 20. For example, the movable blade driving unit 22 may also be understood as a part of the cutter device 26. The fixed blade 19 is fixed in the printer 10. Specifically, the fixed blade 19 is arranged on the printer main body 11 in a state where the blade edge is directed to the first direction D1 intersecting the transport direction D3. The cutting edge of the fixed blade 19 is the first cutting edge.

The movable blade 21 is arranged on the lid 12 with the cutting edge facing the second direction D2, which is the opposite direction of the first direction D1. The cutting edge of the movable blade 21 is a second cutting edge. Further, the movable blade 21 is arranged upstream of the fixed blade 19. The movable blade 21 can move in the first direction D1 and move in the second direction D2. By moving in the second direction D2, the movable blade 21 cuts the recording medium 30 located between the cutting edge of the fixed blade 19 and the cutting edge of the movable blade 21 with a part left uncut. Cutting the recording medium 30 with a part left uncut is called a partial cut.

In the example of FIG. 1, the first direction D1 is the downward direction, and the second direction D2 is the upward direction. Therefore, according to the example of FIG. 1, the movement of the movable blade 21 is a vertical movement. However, the downward direction does not have to be a strict vertical downward direction, and similarly, the upward direction does not have to be a strict vertical upward direction. The movable blade 21 is moved by the movable blade driving unit 22. The movable blade driving unit 22 has a motor 23 for moving the movable blade 21, a gear (not shown), and the like, and applies power from the motor 23 to the movable blade 21 to move the movable blade 21 in the first direction D1 or the second direction. Move to D2. The movable blade driving unit 22 may be any mechanism capable of moving the movable blade 21. As the movable blade driving unit 22, for example, the crank mechanism of Document 1 may be adopted.

The guide unit 20 has a configuration for guiding the partially cut recording medium 30, and is arranged in the printer main body 11. The guide portion 20 is located in front of the movable blade 21 in the second direction D2. The guide portion 20 is arranged upstream of the fixed blade 19. In FIG. 1, the shapes of the movable blade 21 and the guide portion 20 are particularly briefly described. Details of the cutter device 26 including the movable blade 21 and the guide portion 20 will be described with reference to each embodiment described later.

Needless to say, the printer 10 has operations such as a communication interface for communicating with an external device such as a computer, screens and indicators for showing visual information to the user, and buttons and switches for accepting operations from the user. It has a known configuration such as a reception unit as appropriate.

2. 2. Example:
2-1. First Example:
FIG. 3 shows how the operation of the cutter device 26 of the first embodiment transitions to the states A1, A2, and A3. In FIG. 3, the rear view of the cutter device 26 is shown on the left and the side view of the cutter device 26 is shown on the right for each of the states A1, A2, and A3. The rear view is a view from the line of sight facing from the upstream to the downstream. The side view is a view taken along the line of sight orthogonal to the transport direction D3 and orthogonal to the first direction D1 and the second direction D2. In the following, the front in the first direction D1 and the rear in the second direction D2 may be simply expressed as the lower, and the front in the second direction D2 and the rear in the first direction D1 may be expressed as the upper.

The state A1 is a state before the cutter device 26 executes a partial cut of the recording medium 30. The movable blade 21 has a V-shaped cutting edge 21a. The lowermost portion of the V-shaped cutting edge 21a, that is, the portion corresponding to the bottom of the V-shaped cutting edge is referred to as the deepest portion 21b of the V-shaped cutting edge 21a. The recording medium 30 passes between the movable blade 21 and the guide portion 20.

The guide unit 20 guides the recording medium 30 by an end portion facing the recording medium 30. To guide the recording medium 30 is to regulate the position and orientation of the recording medium 30. Therefore, when the guide unit 20 is pointed to in FIG. 3 or FIG. 6 described later, the end portion of the guide unit 20 facing the recording medium 30 is pointed to. The end of the guide portion 20 facing the recording medium 30 is horizontal.

In the state A1, the guide unit 20 is at the guide position P1. The guide position P1 is a position where at least a part of the guide portion 20 projects from the cutting edge 19a of the fixed blade 19 in the first direction D1. Alternatively, the guide position P1 may be the same position as the cutting edge 19a. More specifically, the guide position P1 is the position of the guide portion 20 when the end portion of the guide portion 20 facing the recording medium 30 protrudes from the cutting edge 19a in the first direction D1, or the end portion is the first. This is the position of the guide portion 20 that is at the same position as the cutting edge 19a in the one direction D1.

The guide portion 20 is supported in the printer main body 11 by a support portion 29 that generates a repulsive force when a force is applied to the second direction D2. In the example of FIG. 3, the support portion 29 is a spring, and the guide portion 20 is suspended in the printer main body 11 by the support portion 29. That is, the length, strength, and the like of the support portion 29 are set so that the position of the guide portion 20 when the guide portion 20 is suspended is the guide position P1. In each side view of the states A1, A2, and A3, the description of the support portion 29 is omitted. A stopper 40 for prohibiting the guide portion 20 from moving from the guide position P1 to the first direction D1 may be further provided. The stopper 40 is fixed inside either the printer main body 11 or the lid 12. The stopper 40 is provided at a position where it does not interfere with either the movable blade 21 or the recording medium 30, and comes into contact with the guide portion 20 at the guide position P1 from below to the first direction D1 of the guide portion 20. Prohibit the movement of. In each side view of the states A1, A2, and A3, the description of the stopper 40 is omitted.

In the state A1, the movable blade 21 is in the non-contact position P3. The non-contact position P3 is a position that does not come into contact with the guide portion 20. The movable blade 21 has an extension portion 21c extending in the second direction D2 from each position that does not interfere with the recording medium 30 in the vicinity of both ends of the width. In the present embodiment, the width means a length or a range in a direction parallel to the main scanning direction D4. The extending portion 21c extends in the second direction D2 from the cutting edge 21a. Therefore, the non-contact position P3 is the position of the movable blade 21 when the extending portion 21c of the movable blade 21 is not in contact with the guide portion 20.

Further, the non-contact position P3 is behind the position where the movable blade 21 cuts the recording medium 30 in the second direction D2. The position where the movable blade 21 cuts the recording medium 30 is the position where the cutting edge 21a comes into contact with the recording medium 30. The position behind the position where the recording medium 30 is cut in the second direction D2 is also referred to as the non-cutting position of the movable blade 21. The non-contact position P3 is one of the non-cutting positions.

The state in which the movable blade 21 in the state A1 is moved in the second direction D2 is the state A2. The movable blade 21 located at the non-contact position P3 moves in the second direction D2, so that the extending portion 21c first comes into contact with the guide portion 20. Then, when the movable blade 21 further moves in the second direction D2 while in contact with the guide portion 20, the guide portion 20 is pushed by the movable blade 21, and both the movable blade 21 and the guide portion 20 move to the second direction D2. Moving. Further, when the movable blade 21 moves in the second direction D2, the recording medium 30 located between the cutting edge 19a of the fixed blade 19 and the cutting edge 21a of the movable blade 21 is cut.

The movement of the movable blade 21 is stopped at a timing earlier than when the deepest portion 21b of the cutting edge 21a reaches the recording medium 30. Therefore, a part of the width of the recording medium 30 is left uncut. That is, the state A2 is a state in which the cutter device 26 partially cuts the recording medium 30. The portion left uncut by the partial cut is called the uncut portion 34. In the state A2 in which the partial cut is completed, the guide portion 20 is in the retracted position P2, and the movable blade 21 is in the cutting end position P4.

The shape of the cutting edge 21a including the deepest portion 21b is not limited to the V-shape as shown in the drawing, and may be a shape in which the recording medium 30 is partially cut so that the uncut portion 34 is generated. For example, the shape of the cutting edge 21a including the deepest portion 21b may be partially or completely curved.

By partially cutting the recording medium 30, an end portion 35 of the recording medium 30 is newly generated upstream of the fixed blade 19. The end 35 faces downstream. The end 35 generated by cutting the recording medium 30 by moving the movable blade 21 in the second direction D2 is dragged by the movement of the movable blade 21 and moves in the second direction D2. In the state A2, a state in which a part of the recording medium 30 including the end 35 is pushed upward by moving the end 35 in the second direction D2 is illustrated. After returning the movable blade 21 to the non-contact position P3, when the recording medium 30 in which a part of the recording medium 30 including the end portion 35 is pushed upward is conveyed downstream, the end portion 35 becomes the fixed blade 19. It will come into contact. Therefore, in the present embodiment, the cutter device 26 causes the guide portion 20 to act on the end portion 35.

The state in which the movable blade 21 in the state A2 is moved to the first direction D1, the position of the guide portion 20 is set to the guide position P1 again, and the position of the movable blade 21 is set to the non-contact position P3 again is the state A3. Since the guide portion 20 receives a force from the support portion 29 to the first direction D1 at the retracted position P2, when the movable blade 21 after the partial cut moves to the first direction D1, the guide portion 20 also receives the force in the first direction D1. Move to D1. The guide portion 20 pushes the end portion 35 back to the first direction D1 in the process of moving from the retracted position P2 to the first direction D1. As a result, when the guide portion 20 reaches the guide position P1, a part of the recording medium 30 including the end portion 35 is returned to the original position between the cutting edge 19a of the fixed blade 19 and the cutting edge 21a of the movable blade 21. It returns and the contact as described above does not occur. In this way, the movable blade 21 moves from the non-contact position P3 to the cutting end position P4, and also moves from the cutting end position P4 to the non-contact position P3.

The first embodiment will be further described with reference to FIGS. 4 and 5.
FIG. 4 is a diagram showing a partially cut recording medium 30 from a viewpoint from above.
FIG. 5 shows a flowchart of the recording process executed by the control unit 13. The control unit 13 executes recording processing on the recording medium 30 by controlling each of the recording head 15, the carriage 16, the transport unit, and the cutter device 26. The flowchart of FIG. 5 is realized by the cycle of steps S100, S110, S120, S130, and S140, but here, it will be described from step S100.

The control unit 13 executes recording on the recording medium 30 based on the recorded data (step S100). In this case, the control unit 13 moves the carriage 16 and causes the recording head 15 to eject ink based on the recorded data. As a result, recording is performed on the region of the recording medium 30 supported by the platen 18. The recorded data is, for example, image data representing some object such as a document, an illustration, or a photograph, and defines whether or not ink dots are ejected for each pixel. The control unit 13 may acquire the recorded data by inputting it by communication with an external computer or the like or by generating it according to a user's instruction.

After step S100, the control unit 13 executes the forward transfer of the recording medium 30 by controlling the drive of the transfer unit, that is, the transfer motor 27 (step S110). The forward transport is transport in the transport direction D3, that is, transport from upstream to downstream. In order to distinguish it from the reverse transport in step S140, the expression forward is used for convenience. In step S110, the control unit 13 conveys the recording medium 30 to a position where the region of the recording medium 30 recorded in step S100 reaches downstream from the fixed blade 19.

After step S110, the control unit 13 moves the movable blade 21 by controlling the drive of the movable blade drive unit 22, that is, the motor 23, to execute the operation from the state A1 to the state A2 described in FIG. (Step S120). As a result, a partial cut is executed.

After step S120, the control unit 13 moves the movable blade 21 by controlling the drive of the movable blade drive unit 22, that is, the motor 23, to execute the operation from the state A2 to the state A3 described with reference to FIG. (Step S130). Step S130 is called a return process. A part of the recording medium 30 including the end portion 35, which has been pushed up in the second direction D2 by the partial cut, is pushed back to the first direction D1 by the return process.

In FIG. 4, the cuts of the partially cut recording medium 30 are indicated by reference numerals CL. Although the description is omitted in FIG. 4, the fixed blade 19, the movable blade 21, and the guide portion 20 naturally exist in the vicinity of the cut CL. In FIG. 4, the position of the cutting edge 19a of the fixed blade 19 in the transport direction D3 is indicated by a two-dot chain line. In the width of the recording medium 30, there is an uncut portion 34 between the cut CL and the cut CL. The area downstream of the cut CL of the recording medium 30 is the recorded area 33 in which the object is recorded based on the recorded data in step S100. The hatches made within the recorded area 33 represent some recorded object.

The end 32 and the end 35 of the recording medium 30 are generated with the cut CL interposed therebetween. The end 32 is the end of the recorded area 33. The end 35 is the tip of the recording medium 30 to be recorded next. At the time when the partial cut is performed, a distance L1 is generated between the recording head 15 and the end portion 35 in the transport direction D3. The area corresponding to the distance L1 in the recording medium 30 is a blank area. In order to utilize such a blank area for the next recording, the control unit 13 executes the reverse transfer of the recording medium 30 by controlling the transfer unit after step S130 (step S140). Reverse transport is transport from downstream to upstream, that is, back feed. In step S140, the control unit 13 causes, for example, backfeed the distance L1 or the distance L1 minus a predetermined margin.

In the present embodiment, the movable blade 21 is arranged upstream of the fixed blade 19. Therefore, the end portion of the recording medium 30 generated as a result of the partial cut performed by moving the movable blade 21 in the second direction D2, and the end portion pushed up in the second direction D2, is located downstream of the fixed blade 19. It is located upstream. Therefore, during the back feed of the recording medium 30, such a situation in which the pushed-up end portion comes into contact with the fixed blade 19 and hinders the back feed does not occur.

After step S140, the control unit 13 executes steps S100 and below. In step S100 or lower, which is repeated in this way, the recording medium 30 is conveyed downstream in step S110. At this time, in step 130 executed before step S110, the end portion 35 of the recording medium 30 is returned to a position where it does not come into contact with the fixed blade 19. Therefore, in the transfer in step S110, the end portion 35 of the recording medium 30 can pass under the fixed blade 19 downstream without coming into contact with the fixed blade 19.

Further, after step S130, the control unit 13 can convey the recording medium 30 as it is downstream without back-feeding in step S140. Also in this case, since the end portion 35 of the recording medium 30 is returned to a position where it does not come into contact with the fixed blade 19, the end portion 35 passes under the fixed blade 19 downstream without coming into contact with the fixed blade 19. Can be done.

2-2. Second Example:
FIG. 6 shows a state A1 of the cutter device 26 of the second embodiment by a rear view and a side view as in FIG. The state A1 is as described in the first embodiment. The second embodiment will be described which is different from the first embodiment. As can be seen by comparing FIG. 6 with FIG. 3, the extending portion 21c of the movable blade 21 of the second embodiment is longer than the extending portion 21c of the movable blade 21 of the first embodiment. Specifically, in the extension portion 21c of the movable blade 21 of the second embodiment, when the movable blade 21 is in the non-contact position P3 and the guide portion 20 is in the guide position P1, the cutting edge 19a of the fixed blade 19 is present. It has a length so as to protrude in the second direction D2.

As described above, in the states A1 and A3, the movable blade 21 and the guide portion 20 do not come into contact with each other. Therefore, in the guide portion 20 of the second embodiment, the portion of the movable blade 21 facing the extending portion 21c is the step portion 20a. The step portion 20a is recessed in the second direction D2 from the end portion of the guide portion 20 facing the recording medium 30, and has a notched shape. That is, when the movable blade 21 is in the non-contact position P3 and the guide portion 20 is in the guide position P1, the surface of the guide portion 20 facing the first direction D1 forming the step portion 20a and the extension of the movable blade 21. It does not come into contact with the portion 21c.

In the second embodiment, the guide unit 20 is movable with the step portion 20a of the guide unit 20 during the period when the guide unit 20 moves from the guide position P1 to the retracted position P2 and the period when the guide unit 20 moves from the retracted position P2 to the guide position P1. The extension portion 21c of the blade 21 comes into contact with the extension portion 21c.
In the extending portion 21c of the movable blade 21 of the second embodiment, the movable blade 21 is located in any of the moving ranges, that is, in any of the non-contact position P3 to the cutting end position P4. Even if it exists, it has a surface 21d, which faces the surface 19b facing upstream of the fixed blade 19. The extending portion 21c of the second embodiment is also referred to as an engaging portion of the movable blade 21.

3. 3. Summary:
According to the present embodiment, the cutter device 26 has a fixed blade 19 having a first cutting edge (cutting edge 19a) directed toward a first direction D1 intersecting the conveying direction D3 of the recording medium 30, and a direction opposite to the first direction D1. The second cutting edge (cutting edge 21a) is directed to the second direction D2, and the movement to the first direction D1 and the movement to the second direction D2 is possible. By moving to the second direction D2, A movable blade 21 that cuts a recording medium 30 located between the cutting edge 19a and the cutting edge 21a with a part left uncut is provided. Further, in the cutter device 26, when the movable blade 21 is located rearward in the second direction D2 from the position where the recording medium 30 is cut, at least a part of the movable blade 21 protrudes from the cutting edge 19a in the first direction D1. Alternatively, the guide portion 20 is provided at the guide position P1 which is the same position as the cutting edge 19a and moves from the guide position P1 to the second direction D2 by being pushed by the movable blade 21 which moves in the second direction D2. The movable blade 21 and the guide portion 20 are located upstream of the fixed blade 19 in the transport direction D3.

According to the above configuration, the movable blade 21 is located upstream of the fixed blade 19. Therefore, the conventional problem that the end portion of the recording medium generated downstream of the fixed blade due to the partial cut comes into contact with the fixed blade during back feed and hinders the back feed does not occur. Further, according to the above configuration, when the movable blade 21 is in the non-cutting position, the guide portion 20 is in the guide position P1. Therefore, the guide portion 20 is made to act on the end portion 35 of the recording medium 30 generated upstream of the fixed blade 19 by the partial cut in the process of moving the movable blade 21 to the non-cutting position, and the end portion 35 is referred to as the fixed blade 19. It can be returned to a position where it does not touch. As a result, when the recording medium 30 is conveyed downstream after the partial cut, the recording medium 30 does not come into contact with the fixed blade 19, and the recording medium 30 can be smoothly conveyed.

Further, according to the second embodiment, the movable blade 21 has a surface 19b facing upstream of the fixed blade 19 at a position away from the recording medium 30 regardless of the position of the movable blade 21 within the moving range. An engaging portion (extending portion 21c) having a surface 21d facing the surface 21d is provided.
According to the above configuration, the engaging portion prohibits the cutting edge 21a of the movable blade 21 from entering downstream of the cutting edge 19a of the fixed blade 19 while the movable blade 21 is moving. As a result, the recording medium 30 is surely cut by the fixed blade 19 and the movable blade 21.

Further, according to the present embodiment, the fixed blade 19 and the guide portion 20 are arranged in the first structure, the movable blade 21 is arranged in the second structure different from the first structure, and the second structure is The posture with respect to the first structure can be changed.
According to the above configuration, the recording medium 30 is set between the fixed blade 19, the guide portion 20, and the movable blade 21 by passing the recording medium 30 between the first structure and the second structure. be able to.

Further, since the movable blade 21 is located upstream of the fixed blade 19, when the movable blade 21 comes into surface contact with the fixed blade 19 during movement, the movable blade 21 receives a force facing upstream from the fixed blade 19. As shown in FIGS. 1 and 2, when the first structure is the printer main body 11 and the second structure is the lid 12 which opens downstream, the movable blade 21 receives from the fixed blade 19 during movement. The upstream force acts in the direction of closing the lid 12. As a result, there is no adverse effect that the lid 12 is accidentally opened during the operation of the cutter device 26.

The description of the second embodiment will be supplemented.
Although the description is omitted in FIG. 6, the stopper 40 can be provided in the second embodiment as well. In the second embodiment, the stopper 40 abuts on the guide portion 20 at the guide position P1 from below at a position where it does not interfere with either the movable blade 21 or the recording medium 30, for example, the step portion 20a. It is prohibited that the guide unit 20 moves from the guide position P1 to the first direction D1.

Further, in the second embodiment, it is necessary to prevent the extending portion 21c of the movable blade 21 from colliding with the fixed blade 19 when the lid 12 is opened. Therefore, in the second embodiment, the opening operation of the lid 12 includes a movable blade retracting operation in which the movable blade driving unit 22 moves the movable blade 21 further to the first direction D1 than the non-contact position P3, and a movable blade retracting operation. After that, the lid 12 changes its posture with respect to the printer main body 11 to open the lid. In the movable blade retracting operation, the movable blade 21 is moved in the first direction D1 until the extending portion 21c of the movable blade 21 is located in front of the cutting edge 19a of the fixed blade 19 in the first direction D1. Further, in the second embodiment, the closing operation of the lid 12 is a lid displacement operation in which the lid 12 changes its posture with respect to the printer body 11 to be in a closed state, and after this lid displacement operation, the movable blade driving unit 22 moves the movable blade. This consists of a movable blade advance operation in which the movable blade 21 is moved to the second direction D2 and the position of the movable blade 21 is set to the non-contact position P3. The movable blade retracting operation is an operation of unlocking the lid 12 in the closed state, and the movable blade advance operation is an operation of locking the closed state of the lid 12.
Alternatively, in the second embodiment, the fixed blade 19 and the movable blade 21 may be arranged on the lid 12. If the fixed blade 19 and the movable blade 21 are arranged on the lid 12, the above-mentioned movable blade retracting operation and movable blade advancing operation are unnecessary.

According to the present embodiment, not only the cutter device 26 but also the printer 10 provided with the cutter device 26 can be regarded as an invention. It is also possible to grasp the operation of the cutter device 26 and the operation of the printer 10 including the cutter device 26 as a method.
The printer 10 may be a device that records by a method other than the inkjet method. For example, the printer 10 may include a printer engine for recording by adhering toner to the recording medium 30 by an electrophotographic method instead of the recording head 15. Further, the printer 10 may be a thermal printer.

10 ... printer, 11 ... printer body, 12 ... lid, 13 ... control unit, 14 ... accommodating unit, 15 ... recording head, 16 ... carriage, 17 ... roller, 18 ... platen, 19 ... fixed blade, 19a ... cutting edge, 19b ... surface, 20 ... guide part, 20a ... step part, 21 ... movable blade, 21a ... cutting edge, 21c ... extension part, 21d ... surface, 22 ... movable blade drive part, 23 ... motor, 24 ... roller, 26 ... cutter Device, 27 ... Conveyor motor, 29 ... Support part, 30 ... Recording medium, 34 ... Uncut part, 35 ... End part

Claims (4)

A fixed blade with the first cutting edge oriented in the first direction intersecting the transport direction of the recording medium,
The second cutting edge is directed to the second direction, which is the opposite direction of the first direction, and the movement in the first direction and the movement in the second direction are possible, and the movement in the second direction is possible. With a movable blade that cuts the recording medium located between the first cutting edge and the second cutting edge with a part left uncut.
When the movable blade is located rearward in the second direction from the position where the recording medium is cut, at least a part of the movable blade protrudes in the first direction from the first cutting edge, or the first position. It is provided with a guide portion that is located at the same position as the cutting edge of No. 1 and that moves from the guide position to the second direction by being pushed by the movable blade that moves in the second direction.
A cutter device characterized in that the movable blade and the guide portion are located upstream of the fixed blade in the transport direction. The movable blade has a surface facing the upstream side of the fixed blade at a position away from the recording medium regardless of the position of the movable blade within the range of the movement. The cutter device according to claim 1, further comprising a joint portion. The fixed blade and the guide portion are arranged in the first structure, the movable blade is arranged in a second structure different from the first structure, and the second structure has a posture with respect to the first structure. The cutter device according to claim 1 or 2, characterized in that it is modifiable. A printer comprising the cutter device according to any one of claims 1 to 3.

Images