JPH0725095A - Printer - Google Patents

Abstract

PURPOSE:To control deviation of a feed pitch without making a mechanism complex and large-sized, to prevent deviation of recording position and to make recording sure by equipping a table capable of being moved while sheet paper or the like placed on the table is opposed to a recording head, a supporting part capable of transferring the table, a table-transferring mechanism and a clamper of sheet paper or the like which is provided on the table. CONSTITUTION:Sheet paper or the like S is placed on a table 10 in a time for performing printing and clamped by a clamper 20. In the state, the table is moved on a supporting part 11 by a transferring mechanism 15 and recording is performed on sheet paper or the like by a recording head in the prescribed position. Tractive force and compressive fore in the direction along the moving direction of the table do not act on sheet paper or the like because the same is placed on the table and only moved when the table is moved. Accordingly such a state is prevented that deviation of a feed pitch is caused and also generation of such a skew is prevented that sheet paper or the like is tilted because the same is clamped by the camper. The attitude for a recording head is made regular and a state is prevented wherein deviation of the recording position is generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized printer such as a portable printer, and more particularly to a printer provided with a recording head which is provided in a base so as to face information to be moved and to record information. Regarding

[0002]

2. Description of the Related Art As a printer of this type, for example, as shown in FIG. 6, there is a portable printer which is used by a financial institution or the like and is carried around at a destination. This portable printer is connected to a host via a telephone line or the like and records various information in a passbook as a paper sheet.

Conventionally, this printer has a portable base 1 as shown in FIGS. The base 1 includes a mounting table portion 2 on which a passbook S in which a page to be recorded is opened is mounted, and an insertion slot 3 which is continuous with the mounting table portion 2 and into which the passbook S mounted on the mounting table portion 2 is inserted. ing. Further, in the base 1, a set of a plurality of transport rollers 4 for reciprocating and transporting the passbook S inserted from the insertion port 3 and a thermal head for recording information on the passbook S provided on the transport path and moved. Recording head 5, a platen 6 capable of advancing and retracting to support a passbook S that is moved facing the recording head 5 from below, and the platen 6 is advanced to the recording head 5 side when recording the recording head 5 to record the passbook S. The cam mechanism 7 for pressing the head 5 is provided.

When recording in the passbook S, the passbook S
The page to be booked is opened, the page to be booked is faced up, placed on the mounting table portion 2 of the base 1, and slid as it is to be inserted from the insertion opening 3. As a result, the set of the conveying rollers 4 conveys and moves the passbook S, and in the movement process, the recording head 5 records information at a predetermined recording portion according to an instruction from the host. After that, the transport roller 4 sends the passbook S backward and ejects it from the insertion slot 3.

[0005]

In the printer described above, when the opened passbook S is thick, when the passbook S is inserted from the insertion port 3 and bites the conveyance roller 4, or There is a problem that a feed pitch shift may occur when it is disengaged from the transport roller 4, and a print position shift may occur. for that reason,
Since it is necessary to provide a mechanism for opening and closing the transport roller 4 according to the thickness and increase the torque of the motor for rotating the transport roller 4, the mechanism becomes complicated and becomes large. Further, since the passbook S is moved by using the transport roller 4, a so-called skew in which the passbook S is inclined is likely to occur, and the posture with respect to the recording head 5 may not be regular, which causes a recording position shift. There was a problem.

The present invention has been made in view of the above problems, and an object thereof is to prevent a feed pitch deviation and a posture deviation of paper sheets during recording without making the mechanism complicated and large. Therefore, it is possible to prevent the recording position from being deviated and to surely record at a required position.

[0007]

The technical means of the present invention for solving such a problem comprises a recording head which is provided in a base and which records information in opposition to a sheet to be moved. In the printer, a table on which paper sheets are placed and which can be moved while making the placed paper sheets face the recording head, and a support portion which is provided on a base and movably supports the table A moving mechanism that moves the table and a clamper that is provided on the table and clamps the paper sheets are provided.

Then, if necessary, the table is provided with a guide portion for regulating the posture of the paper sheet with respect to the recording head to a regular posture.

Further, if necessary, a posture detection unit for detecting whether or not the posture of the paper sheet with respect to the recording head is normal when the paper sheet is placed on the table is provided.

[0010]

According to the printer having such a structure, when recording on a sheet, the sheet is placed on the table and clamped on the table by the clamper.
In this state, the moving mechanism moves the table on the supporting portion, and the recording head performs recording on the sheet at a predetermined position. When moving this table,
Since the paper sheets are only placed on the table and moved, the tensile force and the compression force in the direction along the moving direction of the table do not act on the paper sheets, which causes the feed pitch deviation. In addition to the prevention, since the paper sheets are clamped by the clamper, the occurrence of so-called skew in which the paper sheets are inclined is prevented, the posture with respect to the recording head becomes normal, and the recording position shift occurs. Is prevented.

Further, when the guide portion is provided, the paper sheet with respect to the recording head is regulated in a proper posture when the paper sheet is placed or moved.

Furthermore, in the case where a posture detecting section is provided,
When the paper sheets are placed on the table, it is detected whether or not the posture of the paper sheets with respect to the recording head is normal, and it is prevented that the paper sheets are clamped in a bad posture.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A printer according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The printer according to this embodiment is a portable printer similar to that described above,
It is connected to a host through a telephone line or the like and records various information in a passbook as a paper sheet. The same components as those described above will be designated by the same reference numerals.

As shown in FIGS. 1 to 5, in the printer according to the embodiment, reference numeral 1 is a base of a portable size, and a mount base 2 on which a passbook S in which a page to be recorded is opened is mounted. And a loading slot 3 into which the passbook S is inserted, which is continuous with the mounting table 2. A recording head 5 is provided in the base 1 and includes a thermal head for recording information on the passbook S. The recording head 5 is provided so as to be movable back and forth with respect to the passbook S, and is pressed against the passbook S at the time of recording by a driving mechanism (not shown).

Reference numeral 10 denotes a table on which the passbook S is placed and which can be moved while the placed passbook S is opposed to the recording head 5. The table 10 is formed in a rectangular plate shape and is movably supported by a support portion 11 provided on the base 1. The support part 11 is the mounting table part 2 described above.
An opening 12 into which the table 10 is inserted is provided, and rail portions 13 with which the left and right end portions 10a of the table 10 are slidably engaged are formed at the left and right edge portions of the opening 12. The rail portion 13 is preferably extended inside the base 1. The table 10 is moved toward the recording head 5 starting from the placement position A (FIG. 4) on which the passbook S is placed, and is returned to the original position after printing.

Reference numeral 15 is a moving mechanism for moving the table 10. The moving mechanism 15 has a rack 16 provided in the lower center of the table 10 along the moving direction of the table 10, and a pinion gear 17 which is rotated by a motor (not shown) and meshes with the rack 16 on the base 1 side. Is.

Reference numeral 20 is a clamper provided on the table 10 for clamping the passbook S. The clamper 20 includes a clip 22 provided at an end of the table 10 on the recording head 5 side and gripping an end of an opened passbook S by a biasing force of a spring 21, and as shown in FIG. And an actuator 23 such as a solenoid that moves forward in the mounting position A to open the clip 22 against the biasing force of the spring 21 and retracts to close the clip 22 by the biasing force of the spring 21. There is. The actuator 23 is provided on the base 1, and its drive is
For example, this is performed by turning on and off a detection switch (not shown) that detects the insertion position of the passbook S. Further, the actuator 23 retracts to a position where it does not interfere with the table 10 when the table 10 moves.

Reference numeral 25 is a guide portion for regulating the posture of the passbook S with respect to the recording head 5 to a regular posture. The guide portion 25 is composed of a tip guide 26 protruding from the table 10 with which the tip of the passbook S abuts, and a side end guide 27 with which a side end of the passbook S abuts. I am trying to take a regular posture in a standing state.

Reference numeral 30 denotes an attitude detector for detecting whether or not the attitude of the passbook S with respect to the recording head 5 is normal when the passbook S is placed on the table 10 at the placement position A of the table 10. The posture detection unit 30 includes a photoelectric tip detection sensor 31 that detects the tip of the passbook S and a photoelectric side edge detection sensor 32 that detects the side edge of the passbook S. Both sensors 31 and 32 have the passbook S. When it is detected that the posture of the passbook S is normal, at least one of the passbook S is
An abnormal signal is sent when the absence is detected. The base 1 has
A buzzer and a lamp are provided to give an alarm based on the abnormal signal.

A control unit (not shown) is provided in the base 1.
Is provided, the function of causing the recording head 5 to perform required recording in response to a command from the host, the function of advancing the recording head 5 and pressing it against the passbook S at the time of recording, the actuator 2
3 has various functions such as a function of driving the table 3, a function of driving the moving mechanism 15 of the table 10, and a function of issuing an alarm to a buzzer or a lamp based on an abnormal signal from the posture detection unit 30.

Therefore, when recording in the passbook S by the printer according to this embodiment, as shown in FIG. 4, the page to be recorded in the passbook S is opened, and the page to be recorded is placed on the table 10 with the page facing upward. , The side end is brought into contact with the side end guide 27 of the guide portion 25, and is slid as it is to insert the tip of the passbook S from the insertion opening 3. By detecting the insertion position, the actuator 23 of the clamper 20 is driven and the clip 22 is opened. Then, the passbook S is further inserted and brought into contact with the tip guide 26 of the guide portion 25.

When the insertion position of the passbook S is detected, the actuator 23 of the clamper 20 is driven to close the clip 22 and hold the passbook S. At this time, the sensors 31 and 32 of the posture detection unit 30 detect whether or not the passbook S is in the regular position. If the passbook S is not in the regular position, it is determined that the posture is tilted, and an alarm lamp or the like lights up. To do. Therefore, a situation in which the bankbook S is clamped in an inclined state is prevented, the posture with respect to the recording head 5 can be adjusted to a normal posture, and a situation in which a recording position shift occurs is prevented.

In the normal position, as shown in FIG. 5, the pinion gear 17 of the moving mechanism 15 is driven to move the table 10 via the rack 16 and the recording head 5 moves at a predetermined position. Recording is done. When the table 10 is moved, the passbook S is simply placed on the table 10 and moved. Therefore, the tensile force and the compression force in the direction along the moving direction of the table 10 do not act on the passbook S, and therefore, It is possible to prevent the occurrence of the feed pitch deviation and prevent the occurrence of the recording position deviation. Also, the printer is the table 1
Since the mechanism only moves 0, the structure is simple,
The situation that the size becomes large is prevented.

Further, since the passbook S is guided by the guide portion 25 and clamped on the clamper 20, the passbook S
It is possible to prevent the occurrence of so-called skew that causes tilting of the recording head, and to perform recording with a normal posture with respect to the recording head 5. Also in this respect, it is possible to prevent a situation where a recording position shift occurs. Then, when the recording by the recording head 5 is completed, the table 10 is returned to the mounting position A by the moving mechanism 15.

In the above embodiment, the recording head 5
Is a thermal head, but is not necessarily limited to this and may be another type of head.
Further, although the above embodiment is applied to the portable printer for passbook S of the present invention, it is needless to say that it may be applied to other printers.

[0026]

As described above, according to the printer of the present invention, since the mechanism only moves the table, the conventional platen and conveying rollers are not required, and therefore the structure is extremely large without increasing the size. Can be easy. Further, since the paper sheets are only placed on the table and moved, the tensile force and the compression force in the direction along the moving direction of the table do not act on the paper sheets, so that the feed pitch deviation is caused. Therefore, it is possible to prevent the occurrence of the recording position shift, and it is possible to surely perform the recording at the required position.

Furthermore, since the paper sheets are clamped by the clamper, it is possible to prevent the occurrence of so-called skew in which the paper sheets are inclined, and therefore, the posture with respect to the recording head can be made normal and recording can be performed. Also in terms of the point, there is an effect that it is possible to prevent the occurrence of the recording position shift.

Further, when the guide portion is provided, the posture of the paper sheet with respect to the recording head can be regulated to a normal posture when the paper sheet is placed or moved, so that the recording position deviation is surely generated. The effect is that it can be prevented.

Furthermore, in the case where a posture detecting section is provided,
When the paper sheet is placed on the table, it can be detected whether or not the posture of the paper sheet with respect to the recording head is normal. Therefore, it is possible to prevent the situation where the paper sheet is clamped in a bad posture, and By making the posture normal, it is possible to prevent the occurrence of recording position deviation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a printer according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a printer according to an embodiment of the present invention.

FIG. 3 is a plan view showing the table of the printer according to the embodiment of the present invention together with a passbook.

FIG. 4 is a plan view showing a state in which the table of the printer according to the embodiment of the present invention is placed on the table.

FIG. 5 is a plan view showing a moving state of the table of the printer according to the embodiment of the present invention.

FIG. 6 is a perspective view showing an example of a conventional printer.

FIG. 7 is a cross-sectional view of a conventional printer.

[Explanation of symbols]

 S Passbook (paper sheets) 1 Base 3 Insertion port 5 Recording head 10 Table 11 Support part 13 Rail part A Mounting position 15 Moving mechanism 16 Rack 17 Pinion gear 20 Clamper 22 Clip 23 Actuator 25 Guide part 26 Tip guide 27 Side end Guide 30 Posture detection unit

Claims (3)

[Claims] 1. A printer provided with a recording head for recording information, which is provided in a base so as to face a movable paper sheet, the paper sheet being placed and the paper sheet being placed thereon. A table movable while facing the recording head, a support portion provided on a base for movably supporting the table, a moving mechanism for moving the table, and a clamper provided on the table for clamping paper sheets. A printer comprising: 2. The printer according to claim 1, wherein the table includes a guide portion that regulates the posture of the paper sheet with respect to the recording head to a normal posture. 3. A posture detecting section for detecting whether or not the posture of the paper sheet with respect to the recording head is normal when the paper sheet is placed on the table.
The listed printer.