JP2009255350A - Printer for paper sheet roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer for a paper sheet roll capable of executing safely work by a worker, without bringing a finger into contact with a blade tip when replacing the paper sheet roll or the like, even when a lid is opened. <P>SOLUTION: This printer for the paper sheet roll is constituted of a printer body 12 provided with a printing head 16, and a paper piece cutting means 23 installed in a front position of the printing head 16 to cut a supplied paper piece part after printed, and a paper sheet roll cover 32 provided with a platen roller 39 and of communicating freely printing onto the paper sheet roll with a printer body 12 side, the paper piece cutting means 23 is provided with a support body 24 arranged along a longitudinal direction of the printing head 16, and a cutting edge 28 projected with the blade tip 29 from an front end 24a side of the support body 24, and the support body 24 is arranged allowing freely forcible motion of energizing the blade tip 29 all the time to be brought into a substantially parallel direction, when the paper sheet roll cover 32 is completely lid-opened, and of directing downwards the blade tip 29 by abutting, when completely lid-closed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a roll paper printer provided with a paper piece cutting means for cutting a supplied paper piece portion after printing drawn from a loaded roll paper.

  Some measuring devices such as waveform recorders are equipped with a printer that prints necessary information such as waveforms on recording paper. As recording paper used in this case, roll paper made of thermal paper is used, As a printer, a thermal printer is often used.

  Then, the printed paper piece drawn from the roll paper is discharged from a discharge port provided in the printer body and can be cut using a cutter attached to the discharge port side.

  However, when a cutter is attached to the discharge port side, it is necessary to perform a printing operation after previously pulling out the supply paper piece from the roll paper and passing it through the discharge port.

  In this case, when the peripheral humidity is low, the supplied paper piece after printing can be smoothly sent out from the discharge port. However, when the humidity is high, the supply paper piece side also absorbs moisture and its width is widened. There was a problem that it was easily caught and could not be smoothly fed out from the outlet.

For this reason, as shown in the following Patent Document 1, some printers have a roll paper cover attached to the printer body so that the roll paper cover can be opened and opened, and a roll paper cover and printer at the time of closing without specially providing a discharge port. A printer that secures a gap with the main body side, smoothly feeds out the supplied paper piece after printing, and can be cut with a cutter fixedly arranged on the printer main body side. Has already been proposed.
JP 2007-45557 A

  However, as shown in the above-mentioned Patent Document 1, the type in which the roll paper cover is attached to the printer main body so that the roll paper can be freely opened has a blade edge of the cutter that is fixedly disposed even when the roll paper is opened such as when the roll paper is replaced. Since the exposure is always downward, there is a problem that the operator may accidentally touch the finger.

  In view of the above-mentioned problems found in the prior art, the present invention makes it possible for an operator to safely perform a work by making it difficult to touch a fingertip with a finger even when the roll paper is opened such as when a roll paper is replaced. An object of the present invention is to provide a roll paper printer.

  The present invention has been made to achieve the above object, and comprises a print head and a paper piece cutting means which is installed at a position in front of the print head and cuts a supplied paper piece portion after printing drawn from the roll paper. A printer main body, and a roll paper cover that includes a platen roller and is freely connected to the print main body side to print on the roll paper to be loaded, and the paper piece cutting means includes: A support body portion disposed along the length direction, and a cutting blade disposed in the length direction by projecting a blade edge from the front end side of the support body portion, When the roll paper cover is fully opened, the blade edge is always urged so as to be substantially horizontal, and when the roll paper cover is closed, the blade edge is forced to come into contact with the blade edge. Typical The most important feature that the dynamic freely arranged.

  According to the present invention, the cutting edge of the cutting blade that is positioned downward at the time of printing is automatically set in a substantially horizontal direction with a simple configuration when the roll paper cover is opened, such as when the roll paper is replaced. Therefore, it is possible to perform the operation safely while reducing the possibility of the operator touching the blade edge with the finger during the opening operation.

  FIG. 1 is an overall perspective view showing a roll paper cover together with the roll paper in an open state in which the roll paper cover is opened from the printer main body side according to an example of the present invention. 2 is a side view showing the example shown in FIG. 1, in which (a) shows the state when the printer main body side is completely closed with a roll paper cover, and (b) shows the roll paper cover completely. Each of the opened states is shown.

  According to these drawings, the roll paper printer 11 as a whole has a print head 16 and a paper piece cutting machine that cuts a print paper supply section that is installed at a front position of the print head 16 and is drawn out of the roll paper 42. The printer main body 12 having means 23 and the like, and the roll paper cover 32 having a platen roller 39 and connected to the print main body 12 side so as to be opened when the roll paper 42 is exchanged are configured. .

  Among these, the printer main body 12 includes a pair of left and right side plate portions 13 and 14 that can be incorporated in a measuring device such as a waveform recorder (not shown), and a top plate portion 15 that is spanned between the side plate portions 13 and 14. Are formed with a substantially gate-shaped shape.

  The print head 16 composed of a thermal head is disposed along the length direction (left-right direction) on the lower surface side of the top plate portion 15.

  The roll paper cover 32 is disposed on the left and right sides of the concave cover main body portion 33 for accommodating the roll paper 42 with the holder 43 and swings toward the side plate portions 13 and 14 of the printer main body 12. A pair of support arms 34 and 35 that are freely connected are formed.

  The platen roller 39 is disposed so as to be positioned on the heat generating surface side of the print head 16 when the roll paper cover 32 is set to be completely closed on the printer main body 12 side so that printing can be performed.

  On the other hand, the paper piece cutting means 23 has a support main body 24 arranged along the length direction of the print head 16, and a cutting edge 29 protruding downward from the front end 24a side of the support main body 24 so that the length thereof is reduced. And a cutting blade 28 arranged in the direction.

  In this case, the support main body 24 is biased so that the blade edge 29 is always in a substantially horizontal direction when the roll paper cover 32 is opened, and comes into contact with the blade edge when the roll paper cover 32 is closed. Forced movement is freely arranged so that 29 faces downward.

  That is, the support main body 24 is rotatably disposed on both side plate portions 13 and 14 of the printer main body 12 via the support shaft 17. Further, as shown in FIG. 3, a torsion spring 18 is disposed on the support shaft 17, and when the roll paper cover 32 is fully opened, the cutting edge 29 is always substantially horizontal by the torsion spring 18. The support main body 24 is pivotally supported in a state of being biased so as to take a posture to be oriented.

  In addition, the support main body 24 is provided with contact guide pieces 27 on both side surfaces 25 and 26 in the length direction (left and right direction in FIG. 1), and the roll paper cover 32 includes both support arm portions 34 and The abutting portion 36 included in the abutting portion 35 is forcibly rotated by abutting against the abutting guide piece 25 when the lid is applied, so that the blade edge 29 can be disposed downward.

  This will be specifically described with reference to FIG. 4 in relation to the support arm 34 located on the left side. 4A and 4B are explanatory views showing the positional relationship between the paper piece cutting means and the roll paper cover, in which (a) shows the state when the roll paper cover 32 is completely closed, and (b) shows the roll paper cover. 32 shows a state in which the support arm portion 34 side and the support main body portion 24 side are still in contact with each other, and FIG. The state in the middle of opening the lid when removed is shown.

  As shown in FIGS. 2A and 4A, when the roll paper cover 32 is in a completely covered state, the abutting portion 36 included in the support arm portion 34 acts on the biasing force of the torsion spring 18. As a result, the support main body 24 forcibly pushes up the base end portion 27a of the contact guide piece 27 provided on the side surface 25. As a result, the cutting edge 28 of the cutting blade 28 located on the front end 24a side, which is the opposite side, also has its cutting edge 29 downward. It will be in the state of facing. Therefore, the supply paper piece portion that has been drawn out of the roll paper 42 and finished printing can be kept in a state where it can be cut at any time via the blade edge 29 located immediately above. When the cover is completely closed as shown in FIG. 4A, a gap s for feeding the supply paper piece portion below the blade edge 29 can be secured.

  On the other hand, when it is necessary to open the roll paper cover 32, for example, when the roll paper 42 is replaced, the support arm as shown in FIG. 4B is opened by pulling the roll paper cover 32 side forward. Although the contact state between the contact portion 36 side of the portions 34 and 35 and the contact guide piece 27 is eliminated, the distal end portion 34a of the support arm portion 34 is in contact with the proximal end portion 27a of the contact guide piece 27. Since the contact is maintained, the cutting edge 29 still faces downward.

However, when the opening degree of the roll paper cover 32 becomes larger as shown in FIG. 4C, the contact state between the distal end portion 34 a of the support arm portion 34 and the proximal end portion 27 a of the contact guide piece 27 is eliminated. Then, the support main body 24 is rotated by the urging force of the torsion spring 18 so that the front end 24a is lifted, and both the blade edge 29 and the blade 29 are moved in the substantially horizontal direction.

  Then, the state shown in FIG. 4C is further advanced to completely open the roll paper cover 32 as shown in FIG. 2B, and the cutting edge 23 of the paper piece cutting means 23 on the printer main body 12 side is substantially horizontal. By setting it in a state of facing the direction, the roll paper 32 can be safely replaced as shown in FIG.

FIG. 3 is an overall perspective view showing the roll paper cover together with the roll paper in an opened state in which the roll paper cover is opened from the printer main body side according to an example of the present invention. FIG. 2 is a side view showing the example shown in FIG. 1, in which (a) shows a state when the printer body side is completely closed with a roll paper cover, and (b) shows a state where the roll paper cover is completely opened. Each is shown. The side view which expands and shows the structural example of the paper piece cutting means in this invention. Explanatory drawing which shows typically the internal structure about an example. It is explanatory drawing which shows the arrangement | positioning relationship between a paper piece cutting | disconnection means and a roll paper cover, of which (a) is a state when a roll paper cover is completely closed, (b) is the support arm part side of a roll paper cover And (c) shows the state in the process of opening when the support arm part side is out of the contact state with the support body part side, respectively. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Roll paper printer 12 Printer main body 13,14 Side plate part 15 Top plate part 16 Print head 17 Support shaft 18 Torsion spring 23 Paper piece cutting means 24 Support main body part 24a Front end 25, 26 Side surface 27 Contact guide piece 27a Base end part 28 Cutting blade 29 Cutting edge 32 Roll paper cover 33 Concave cover main body part 34, 35 Support arm part 34a Tip part 36 Contact part 39 Platen roller 42 Roll paper 43 Holder s Gap

Claims (1)

To a roll paper that is provided with a print head, a printer main body that is provided at a position in front of the print head and that cuts a supplied paper piece portion that is pulled out from the roll paper after printing, and a platen roller. A roll paper cover that is freely connected to the print main body side for printing by the print head.
The paper piece cutting means includes a support main body portion disposed along the length direction of the print head, and a cutting blade disposed in the length direction by projecting a blade edge from the front end side of the support main body portion. Prepared,
The support main body is urged so that the blade edge is always in a substantially horizontal direction when the roll paper cover is fully opened and is in contact with the blade edge when the roll paper cover is closed. A roll paper printer characterized in that a forcible movement is freely arranged so as to face downward.

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