JPH01175459A - Integral scanning type scanner printer - Google Patents

Abstract

PURPOSE:To simultaneously scan for reading and writing by providing an optical read element on the side opposed to a document of a carriage, and on the other hand, providing a recording element on the opposed side, pressing fixed recording paper against this recording element, and bringing the carriage to reciprocating motion. CONSTITUTION:When a print start switch is turned on a recording paper supplying and holding means 7 is operated and recording paper S is supplied to a position corresponding to a document O which is fixed on contact glass 1a along a recording paper guide sheet 10. Subsequently, a platen 5 is pressed against a recording element 4 from the back side of the recording paper guide sheet 10, and the recording paper S is allowed to adhere closely to a thermal head of the recording element 4 through an ink sheet 6b. When the press- contacting operation to the recording element 4 of the platen 5 is completed, an optical read element 2 reads information of the document O, and the result is supplied to the thermal head of the recording element 4 through a control circuit 13, a controller 12 and a thermal head driving control circuit 15, and recorded onto the recording paper S through the ink sheet 6b.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an integrated scanning scanner printer that simultaneously reads document information and writes information onto recording paper.

(Prior Art) Conventionally, scanner printers have been known that record document information on recording paper using optical reading elements arranged in a line and recording elements made up of heating elements arranged in correspondence with the optical reading elements. ]are doing.

Conventional scanner printers are equipped with an optical reading element that scans the document, and a clamper that clamps the edge of the recording paper.The downstream part of the recording paper is held between the recording element and the platen. The first type records by moving only the optical reading element back and forth in the sub-scanning direction of the document, and the recording paper held between the recording element and the platen is gripped by a gripping force greater than the gripping force of the recording element and the platen. A second type of recording paper is moved back and forth by a capstan roller having a capstan roller and records by giving the output of a separate and independent optical reading element to the recording element. A third type records on a part of the circumferential surface by reciprocating the roller with a roller that rotates in pressure contact with the recording element, inscribes it on the recording element, and gives the output of a partially independent optical reading element. Clamp and wind the recording paper around the large-diameter drum 11 to which the element is pressed. While rotating this I-ram in a fixed direction, provide the output of the separate and independent optical reading element to the ``-2 recording element. There is a fourth type, which is recorded by .

However, in conventional scanner printers, the optical reading element (scanner) and the recording element (blank) are constructed as separate parts with separate parts, so there are many components and the device is difficult to use. There was a problem that it became bulky, and in the case of color transfer, it became difficult to achieve the drag I/position accuracy for each color.

(Objective) An object of the present invention is to provide an integrated scanning scanner printer that can improve image quality by reducing jitter caused by pitch errors in reading and writing, and that is compact and inexpensive. .

(Structure) The body scanning type scanner printer according to the present invention is provided with a rigid carriage that moves back and forth along the sub-scanning direction of the document, and an optical reading element (scanner) on the side of the carriage that faces the document. ), and a recording element is disposed on the side of the carriage opposite to the optical reading element, and a recording sheet placed on the recording element is brought into pressure contact with the carriage, and the carriage is reciprocated to perform reading. The feature is that the scanning and the beginning of writing are performed at the same time.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

The illustrated scanner printer includes a scanning optical system 1, optical reading element 2, carriage 3, recording element 4, platen 5, ink sheet supply means 6, recording paper (1 It is composed of a means 9, a recording paper guide sheet 10, etc. (see FIG. 1).

For example, as shown in FIG. 2, the scanning optical system 1 includes a contact glass 1a, a light source 1b such as a fluorescent tube, an imaging lens 1c, and an imaging element 1d such as a rinse.

The optical reading element 2 is constituted by, for example, a CCD line sensor, and is disposed on a carriage 3, which will be described later, with its light receiving surface (original information reading surface) facing the original scanning optical path 1e of the scanning optical system 1. There is. Here, the scanning optical system 1 and the optical reading element 2 are constructed using a contact glass la.
They are arranged along the main scanning direction (direction perpendicular to the plane of the paper in FIG. 1) of the document placed above.

For example, as shown in FIG. 3, the carriage 3 includes two guides that are supported parallel to each other along the document placement surface of the contact glass 1a and the sub-scanning direction of the document ○ (horizontal direction in FIG. 1). It is supported slidably along the guide rod 3a by rollers 3b that sandwich the rod 3a.

The recording element 4 has a thermal head for recording document information read by the optical reading element 2, and is disposed on the surface of the carriage 3 on the side facing the optical reading element 2 (see FIG. 2). .

The platen 5 is formed of, for example, a silicone rubber roller or a metal roller, and is configured to be brought into contact with and separated from the recording element 4 by a platen contacting and separating means 8, which will be described later.

The ink sheet supply means 6 includes a roll 6a for feeding the ink sheet 1 wound into a roll, a guide roll 6c for guiding the ink sheet 6b fed out from the ink sheet roll 6a along the thermal head 4a of the recording element 4, and a guide roller 6c for guiding the ink sheet 6b fed from the ink sheet roll 6a along the thermal head 4a of the recording element 4; It is comprised of a take-up roll cd for winding up the ink sheet 6b and a take-up motor 560 for rotating the take-up roll 6d in a direction to wind up the ink sheet h6b (see FIG. 1).

For example, as shown in FIG. 4, the recording paper supply and holding means 7 includes a drive roller 7a, a driven pulley 7b, a belt 7c, a moving pulley 7d, a step motor 7e, and a presser roller 7f.
The recording paper S is fed and held by rotating the driving roller 7a and the holding roller 7f in pressure contact with each other by turning on and off the step motor 7e. Here, to hold the recording paper S, for example, a rubber roller with a high friction coefficient is used to prevent slippage against the recording paper S, such as the four-backed roller 7f, and the drive roller 7a Then, a metal roller formed by adhering powder such as metal or stone to the surface to form protrusions that bite into the recording paper S is used, and while the rotation of these rollers 7a and 7f is stopped, This is done by passing a current through the pulse motor 7e and blocking the rotation of the rollers 7a and 7f with a torque applied to the pulse motor 7e. In this way, each roller 7a,
By providing the recording paper S supplying function and holding function to 7f, there is no need to provide a new holding mechanism for the recording paper S, and the margin of the recording paper S can be reduced (
(The recording area of the thermal head can be expanded), and the number of components can be reduced to make the device more compact.

The platen contact/separation means 8 is disposed on the carriage 3, and as shown in FIG. An eccentric cam 8b is disposed at the base end of the eccentric cam 8a so as to be rotatable toward and away from the recording element 4, a cam motor 8c rotationally drives the eccentric cam 8b, and a platen 5 pivotally supported at the free end of the swinging rod 8a. and a spring 8b that swings the swinging rod 8a in the direction of pressure contact. Here, the platen 5 is supported so as not to be misaligned with respect to the line of the thermal head of the recording element 4.
Further, both ends of the platen 5 are supported by bearings or the like having a low coefficient of friction.

The carriage reciprocating drive means 9 includes a carriage drive motor 9a and a carriage drive motor 9, as shown in FIG.
an output pulley 9b attached to a, a belt 9C that transmits the rotation of the output pulley 9b, a speed change pulley 9d rotated by the belt 9c, a drive shaft 9e that rotates coaxially with the speed change pulley 9d, and a drive shaft 9e. Driven by a pair of driving pulleys 9f attached to both ends, each pair of driven pulleys 9g pivotally installed in the same plane as each driving pulley 9f, and driven by the driving pulley 9f and driven pulley 9g, and both ends of the carriage 3 It is composed of a carriage drive wire 9h with a wire 4 fixed at both ends.

The recording paper guide sheet 10 is arranged along the supply path of the recording paper S, as shown in FIG. The platen 5 is made of a material that has low contact properties and a low coefficient of surface friction during processing of the platen 5, which will be described later, and is less likely to cause electrostatic absorption, such as a thin silicone rubber-based film or a thin silicone rubber-based film. There is. Here, the supply path of the recording paper S is, for example, as shown in FIG. and the recording paper (I) are formed so as to pass through the contact points of the drive roller 7a of the feeding and holding means 7 and the presser roller 7f.

The operation of the scanner printer configured as described above will be described below.

First, as shown in FIG. 6, external data (data such as printer 1, size, print, number of copies, and whether or not color transfer is performed) is input to the controller 12 via the interface 11. Next, when a start switch is turned on to the printer 1 (not shown), the step motor 7e of the recording paper supply and holding means 7 moves (f=), and the recording paper S is rotated by the rotation of the drive roller 7a and the presser roller 7f. The document is fed along the guide sea 1-10 to a position corresponding to the document O placed on the contact glass la as shown in FIG.

When the feeding of the recording paper S is completed, as described above, the end of the recording paper S near the home position (the left end in FIG. 1) is held by the drive roller 7a and the pressing roller 7f. Note that when feeding this recording paper S, the platen 5
is located in a pull spaced from the recording element 4, and is also located on the hole 11 position side of the carriage 3.

When the recording paper S is fed to a predetermined position as described above, the cam motor 8c of the platen approaching/separating means 8 is turned on, the eccentric cam 8b rotates, and the cam edge swinging rod 8a of the eccentric cam 8b rotates. The proximal end of which contact is broken. Due to this, the swinging rod 8a swings clockwise in FIG. 5 due to the elasticity of the spring 8d, and the platen 5 is pressed against the recording element 4 from the back side of the recording paper guide sheet 1o. , the recording paper S is brought into close contact with the thermal head of the recording element 4 via the ink sheet Gb.

When the pressing operation of the platen 5 against the recording element 4 is completed, the light source 1b of the scanning optical system 1 is emitted via the control circuit J3, and the reading star 1- is activated by the controller 12.
The driver 1.1 is given confidence, and the optical reading element 2 reads the information of the document ○. The information on the document 0 is applied to the thermal head of the recording element 4 through the control circuit 13, the controller J2 and the thermal head drive control port '18] 5, and then to the ink sheet 1 via 6b to the recording paper S.
recorded above. Then, while performing reading and writing in the predetermined main scanning direction, the carriage 3 is moved by the guide rod 38 by the drive of the carriage drive motor 9a, and reaches the position shown by the chain line in FIG. 1 in the sub-scanning direction of the document ○. will be transferred.

In this way, the controller 12 controls the on/off of the step motor 7e, the cam motor 8c, and the carriage drive motor 9a via the driver 16, and the driver mechanism 1
By controlling the optical reading element 2 and the recording element 4 through the
Writing to (to printer 1) is performed at the same time.

When the forward movement of the carriage 3 is completed, the cam motor 8c is turned on again, the eccentric cam 8b rotates, and the swinging rod 8a swings in the counterclockwise direction against the elasticity of the spring 8d, as shown in FIG. the platen 5 from the back of the recording paper guide sheet [10].
are separated. When this separating operation of the platen 5 is completed, the carriage drive motor 9a reverses its rotational direction and is turned on, and the carriage 3 is fixed to the guide rod 3a and moves backward. When the carriage 3 returns to its home position, a home position sensor (not shown) is turned on, and this determines the number of prints and whether or not to print in color.
- If the number of sheets is plural, when the carriage 3 returns to its home position, the next recording sheet S is supplied and the above-mentioned reading and writing vJ1↑ is repeated. Note that while the carriage 3 is moving back, the step motor 7e is turned on in the reverse direction, and the recording paper S on which writing has been completed is ejected from the machine by the drive roller 7a and the holding roller 7f.

As the recording paper S, roll paper or cut paper having a thickness of approximately 60 to 150 μm is used. In the case of roll paper, a paper cutter (not shown) is disposed at an appropriate position on the recording paper S supply path.

By the way, in the above embodiment, since the recording paper guide sheet 1-10 is arranged along the supply (ejection) path of the recording paper S, the reciprocating movement of the carriage 3 causes the platen 5 and the recording paper S to It is possible to prevent the occurrence of paper jams, stretching, etc. due to any contact.

Further, as mentioned above, since the recording paper S can be fed and held only by the driving roller 7a and the holding roller 7f, the margin of the recording paper can be reduced and a separate holding mechanism is not required.

Here, the clamping force of the driven roller 7a and the presser roller 7f on the recording paper S is set in advance to be greater than the pressing force exerted on the recording paper S by the platen 5.

In the case of color transfer, set the ink sheet 6b for color transfer in advance, and also set the ink sheet 6b for color transfer in advance.
Insert a color separation filter into the image, move the carriage 3 back and forth N times (usually 4 times for Y, M, and C) according to the number of color-separated pixels in the same manner as described above. It is driven to scan and record documents. In this example,
Read with recording paper S and document ○ in place,
Since the writing is done simultaneously, no matter how many times the carriage 6 is moved back and forth, there will be no color shift or the like in the image.

Further, as shown in the above embodiment, by integrating the optical reading element 2 and the recording element 4 and disposing them on the carriage 3, the reading position and the writing position of the document always correspond to each other. It is possible to prevent image jitter from occurring due to misalignment.

(Effects) As described above, the integrated scanning scanner printer according to the present invention can improve image quality, miniaturize the device, and reduce costs by reducing jitter caused by pitch errors between reading and writing originals. .

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of an embodiment of the present invention, FIG. 2 is a schematic side view of the scanning optical system of the above embodiment, FIG. 3 is a schematic perspective view of the carriage and carriage reciprocating drive means in the above embodiment, and FIG. FIG. 4 is a schematic side view of the recording paper supply and holding means of the above embodiment, FIG. 5 is a schematic side view of the platen contact/separation means of the second embodiment, and FIG. 6 is a block diagram showing the drive control device of the above embodiment. It is a diagram. 1... Scanning optical system, 2... Optical reading element, 3...
... Carriage, 4... Recording element, 5... Platen, 6... Ink sheet supply means, 7...
Recording paper supply holding means, 8...Platen contact means, 9
... Carriage reciprocating drive means, 10... Recording paper guide sheet. (Mi S

Claims (1)

[Scope of Claims] 1. A scanner printer that records document information on recording paper using optical reading elements arranged in a line and recording elements made of heating elements arranged corresponding to the optical reading elements. The document and the recording paper are arranged facing each other with a constant interval, and a carriage having rigidity that moves back and forth along the sub-scanning direction of the document between the document and the recording paper is provided. The optical reading element and the scanning optical system are arranged along the main scanning direction of the original on the side of the carriage facing the original, while the recording element and the scanning optical system are arranged on the side of the carriage facing the recording paper. An integral scanning type scanner printer characterized in that a platen that presses the recording paper against the recording element is arranged in correspondence with and integrated with the upper optical reading element. 2. A function for feeding recording paper made of roll paper or cut paper between the recording element and the platen to a position facing the original along the sub-scanning direction of the original, and a recording after this feeding is completed. Claim 1, comprising recording paper supply and holding means having a function of holding the end of the paper on the recording start side with a clamping force greater than the clamping force of the recording paper between the recording element and the platen. The integrated scanning scanner printer described. 3. An integrated scanner printer according to claim 1, wherein a flexible recording paper guide sheet is disposed along the recording paper supply path on the back side of the recording paper. 4. A platen contact/separation mechanism that presses the recording paper against the recording element when the carriage reciprocates, and separates the recording paper from the recording element when the carriage moves back, and causes the platen to move toward and away from the recording paper; , and a multicolor printing mechanism that moves the carriage back and forth a plurality of times while holding the end of the recording paper on the recording start side. .