JPS63214061A - Recorder - Google Patents

Abstract

PURPOSE:To distinctly read characters and patterns by allowing the center position of each dot of characters and patterns to coincide with the read center position of a photoelectric transducer to prevent erroneous reading. CONSTITUTION:An original 16 is set on an original platen 21 with the picture surface turned up and is retained from above by an original cover 17. The original cover 17 is provided with a transparent glass 23 for original and a liquid crystal display plate 22, and the original is seen through from the outside when the original 16 is set and retained. Pressure-sensitive touch panels 18 and 19 are provided on the frame of the original cover 17 in transverse and longitudinal directions. In case of the use of these touch panes 18 and 19, arbitrary positions are successively pressed with a position selecting pen 20 to point arbitrary points on the original. A square 51 surrounded with points 47, 48, 49, and 50 pointed with the position selecting pen 20 is recognized as the range selected for picture modification. This square range is displayed as an opaque area by the operation of the liquid crystal display plate 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, and particularly to a recording device having a dot reading device.

[Conventional technology]

Regarding recording devices, recently, as disclosed in Japanese Patent Application Laid-Open No. 58-75965, one that has an image reading device and, for example, a thermal transfer printer has been developed. Taking the above publication as an example, it is shown in FIG.

In the figure, 1 is a document, 2 is a document presser, 3 is a transport roller,
4 is an illumination, 5 is a lens, and 6 is a photoelectric conversion element, which indicates a reading portion of the original.

Also, 7 is a thermal head, 8 is a recording paper, 9 is a recording paper 8
10 is a paper drawer roll, 11 is a platen, and 12 is an ink ribbon, which are parts on which read document information is printed.

As shown in the figure, when a document 1 is set between a document presser 2 and a document transport roller 3 and illuminated by a lighting device 4, the reflected light generated from the surface of the document 1 passes through a lens 5 and reaches a photoelectric conversion element 6. It will form an image.

The photoelectric conversion element 6 mechanically moves the surface of the original 1 to scan, for example, in the X direction, and the original 1 also moves along the original transport roller 3.
Since the rotation of the document 1 moves, for example, in the Y direction in synchronization with this scanning, all image information on the document 1 is read by the photoelectric conversion element 6.

Information read by the photoelectric conversion element 6 is transmitted to the thermal head 7 as recorded information.

On the other hand, the recording paper 8 is pulled out from the paper cassette 9 by a paper drawer roll 10.
When the recording paper 8 is set on the platen 11, the thermal head 7 generates a group of heating elements that are energized based on the recorded information. Since the ink is pressed against the recording paper 8 via the ink ribbon 12, the ink on the ink ribbon 12 is melted or sublimated and transferred to the recording paper 8, completing recording.

In addition to this, some recording devices have a system in which handwritten characters are read and compared with built-in printed characters, and the characters recognized by this comparison are outputted by a printing device.

[Problem that the invention seeks to solve]

As mentioned above, conventional recording devices can read and record the image information of a document, but when reading characters and figures expressed in a dot matrix using the photoelectric conversion elements 6 arranged in a row, As shown in FIG. 11(a), due to the positional shift in the scanning direction between the dot 13°14.15 and the photoelectric conversion element 6, the two dots have the same shape as shown in FIG. 11(b). However, the reading output may be different. In other words, there is a possibility that five characters or figures may be read incorrectly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording device having a built-in document reading section that clearly reads characters and figures represented by a dot matrix.

[Means for solving problems]

The present invention provides a recording device comprising a document reading section that reads nine characters represented by dots using a photoelectric conversion element, and a printing section that prints information read by the document reading section. A reading position control circuit is provided to prevent misreading by aligning the dot center position of the two figures with the reading center position of the photoelectric conversion element, and the object is to enable characters and figures to be read clearly. The goal is to achieve this goal.

[Effect]

The recording device of the present invention houses a document reading section that reads information on a document and a printing section that prints and records the read information in the same housing, and uses photoelectric conversion elements to convert characters and figures expressed in a dot matrix. The read information is transferred and recorded onto recording paper using, for example, a thermal transfer type recording device.When reading document information, a reading position control circuit using a microprocessor is provided to control the position of the photoelectric conversion element. By aligning the center of the reading dot with the reading position of the photoelectric conversion element, clear read information and sharp prints can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view showing an embodiment of the recording apparatus of the present invention, and FIG. 2 is a side view of FIG. 1.

In these figures, 16 is a document, 17 is a document cover,
18 is a horizontal touch panel, 19 is a vertical touch panel, 2o is a position selection pen, 21 is a document table on which the document 17 is placed, 22 is a liquid crystal display panel, 23 is a document glass placed on the document 17, and 24 is a document table 21 These springs support the original document 16 and indicate the original document setting section where the document 16 is set in the device.

Further, 25 is a moving reading device, 26 is a lighting device that irradiates light onto the document 16, 27 is a reflector that reflects light from the surface of the document, and 28
29 is a rod lens array that forms an image of the reflected light, and 29 is a photoelectric conversion element that detects the light passing through the rod lens array 28 and reads information. Reference numeral 30 denotes a motor for moving the movable reading device 25 along the document surface, and 31 its timing belt, which represent a document reading section that reads information on the document 16. Further, 32 is a recording paper, 33 is a platen for conveying the recording paper 32, and 34.35 is a recording paper 32 on the platen 33.
36 is an ink ribbon for printing,
37 generates heat due to the recorded information read by the thermal head. 38 is a paper cassette for storing recording paper; 39 is a paper drawer roll for pulling out the recording paper from the paper cassette 38; 40 is a paper guide for guiding the pulled-out recording paper to the platen 33;
Reference numeral 41 indicates a take-up roll, 42 a drawer roll, and 43 a ribbon cassette, which represent a transfer section for transferring read information onto the recording paper 32.

Reference numeral 44 indicates an operation panel, and P indicates a copy start type for operating the apparatus.

Reference numerals 45 and 45' denote a control board on which each control device of the apparatus is attached, and 46 a power supply for operating the apparatus.

(A) Original Placement Portion As shown in FIG. 3, the original 16 is set on the original surface 21 with the original side facing up, and is held down by the original cover 17 from above. At this time, the original 16 and the original cover 17 are pressed together by the elasticity of the spring 24 so that the adhesion between the original 16 and the original cover 17 is not deteriorated.

The document cover 17 includes a transparent document glass 23 and a liquid crystal display panel 22, and allows the document to be viewed from the outside when the document 16 is set and pressed.

Further, as shown in FIG. 4, pressure-sensitive touch panels 18 and 19 are attached to the frame of the document cover 17 in the horizontal and vertical directions.

When using the touch panels 18 and 19, the position selection pen 20 is used to press arbitrary positions on both touch panels 18 and 19 in order to indicate an arbitrary point on the document. A rectangle 51 found by the coordinates indicated by points 47 and 48 indicated by the position selection pen 2o and the coordinates indicated by points 49 and 50 is recognized as the range selected for image modification. This rectangular range 51 is displayed opaquely by the operation of the liquid crystal display panel 22.

(B) Movement of the document reading unit The reading device 25 is fixed to a timing belt 31 driven by a document motor 30, and as the document motor 30 rotates, it moves over the document cover 17 in the direction of the arrow as shown in FIG. It moves back and forth to read the characters or figures on the document 16.

A lighting 26, a reflecting mirror 27, a rod lens array 28, and a photoelectric conversion element 29 are built into the movable reading device 25.
The image of the original is photoelectrically converted and read, and at this time the reading position is controlled by a reading position control circuit as shown in FIG.

In FIG. 6, 52 is a motor that moves the photoelectric conversion element 29 in the scanning direction, 53 is a pulley fixed to the shaft of the motor 52, and 54 is a steel belt connecting the pulley 53 and the photoelectric conversion element 29.

Further, 55 is an amplifier circuit which amplifies the analog signal read by the photoelectric conversion element 29. A peak value hold circuit 56 holds the output peak value of the amplifier circuit 55. 57
A converts this peak hold value into a digital signal.
/D conversion circuit, 58 is CPU (microprocessor)
controls the entire circuit. 59 to 62 are motor driver circuits, and 63 is a memory of the CPU 58.

When a dot on the original 16 is detected by the photoelectric conversion element 29, its output is taken out as a peak value by a blank value hold circuit 56, and this peak value is sent to the CPLI 58 and the memory 63.
are input and subjected to successive comparison.

The CPU 58 controls the motor drive circuits 59 to 62 so that this comparison value becomes maximum, so that the center position of the dot and the reading position of the photoelectric conversion element 29 coincide with each other.

(C) Printing section The components are shown in FIG. 3, and FIGS. 7 and 8 illustrate the operating principle of the thermal transfer printing method.

Ink ribbon 6 wound around delivery side roll 63 in FIG.
4 is wound onto a take-up roll 67 via a ribbon guide 65 and a platen 66.

Recording paper 68 is conveyed to a printing position by platen 66.

The thermal head 69 includes a group of heating elements arranged in a line in the length direction, and presses this heating element group against the recording paper 68 via the ink ribbon 64, and melts the ink by the heat generated by the thermal bed 69 according to the recording information. is transferred onto recording paper 68.

When printing is completed or the print body is stopped, the pressing force of the thermal head 69 is released and returned to normal.

When performing color printing, as shown in FIG.
, cyan and C, and color expression is achieved by combining these colors.

As described above, in the recording apparatus of this embodiment, when starting the apparatus, by pressing the copy start button P on the operation panel 44, the movable reading apparatus 25 scans the original 16 in the sub-scanning direction (the fifth The image is read while scanning in the direction of the arrow in the figure.

The CPU 58 reads this image for each rask in the sub-scanning direction, operates the motor driver circuits 59 to 62 based on the data, moves the photoelectric conversion element 29 slightly in the main scanning direction, and calculates the previous output peak hold value and the current output. Compare with peak hold value.

The read data when the photoelectric conversion element 29 arrives at the position where the comparison value becomes the maximum value is used as image information of the original 16.

In this way, the reading position of the photoelectric conversion element 29 is controlled, and the dots on the document are read in the best positional relationship.

Looking at the dot matrix type printers currently installed, most of them have a dot density of 1/180.
Inches are used.

In this embodiment, the reading density of the document reading section is set to 1/18 inch, so when reading a document printed with a dot density of 1/1.80 inch, the dots at one location on the document and the photoelectric conversion element overlap. By aligning the centers of the pixels, it is possible to align the dot centers of one entire raster in the main scanning direction during document reading with the center of the photoelectric conversion element.

After correcting the position of the photoelectric conversion element 29 to match the original 16 in this way, the image information of the original 16 is read, and this image information is sent to the thermal head 37 and transferred onto the recording paper 32 (
Figure 3) Printing is completed.

When copying with partial modification of the image information of the original, as described above, specify the modification range 51 as shown in FIG. 4 with the position selection pen 20, specify the modification information with the operation panel 44, and copy. By performing this, a modified image record can be obtained.

In this manner, this recording device can clearly read characters and figures expressed in a dot matrix without causing any positional deviation between them and the photoelectric conversion element. Further, since the original can be placed face up, it becomes easier to place the original when a plurality of originals are stacked or arranged side by side to be printed on one copy.

In addition, it is possible to accurately indicate the position of the original to be copied, and by using a liquid crystal display panel that corresponds one-to-one with the original, it is possible to partially modify and copy the original. , copy only any range, change the shape color of any range, change the shape and background color of any range, enlarge or reduce any range Various modification processes such as moving an arbitrary range to another position can be easily performed.

Furthermore, it becomes easy to display image data input from an external image data generator on a liquid crystal display panel, align it with the original, and then store it in a memory for synthesis and copying.

FIG. 9 shows a case where a word processor or a personal computer and the recording device of this embodiment are used in combination.
For example, image data is generated by a word processor 69 and printed on a recording device via a communication cable 70. In this case, it can be realized by using an 8-bit parallel signal.

Further, in this example, the dot density of the photoelectric conversion element is set to 1/180 inch as described above, but other than that, the dot density of the photoelectric conversion element is set to 1/180 inch.
Recorders with 60 inch or 1/72 inch dot densities may also be used. In such a case, it is sufficient to use photoelectric conversion elements having the same linear density as these, and to set the maximum fine movement width in the main scanning direction to ±17120 inches and ±1/144 inch, respectively. In other words, the reading linear density is 10 and 1
A positive multiple of the least common multiple of 2 dots/inch or 10 and 1
2 to the negative power of the least common multiple of 2 dots/inch, or 72 to the negative power of 2 dots/inch, or 72 to the negative power of 2 dots/inch, or 2 to the positive power of dots/inch. It would be better to use millimeters.

In this embodiment, the case where information is represented by dots has been described, but the present invention can also be applied to information displayed by lines or fill-in.

Furthermore, although the touch panel shown in Fig. 4 is divided into a vertical axis and a horizontal axis, it is possible to cover the entire surface of the document cover with the touch panel and configure it so that the vertical and horizontal axes can be instructed simultaneously in one operation. You can also do it.

Although a thermal transfer method is used as a printing method, similar effects can be obtained by using other methods such as an electric transfer method, a wire dot method, an electrophotographic method, and an inkjet method.

Although a motor is used to move the photoelectric conversion element, other actuators using piezoelectric elements or the like may also be used.

As described above, by using this embodiment, the following effects can be obtained.6 When reading characters and figures expressed in a dot matrix, by controlling the reading position of the photoelectric conversion element, the reading dots on the document and the photoelectric conversion elements can be aligned. It is possible to prevent misalignment between the transducer and the converting element, to read characters or figures clearly, and to record these image information clearly.

〔Effect of the invention〕

According to the present invention, it is possible to provide a recording device that includes a built-in document reading section that clearly reads characters and figures expressed by a dot matrix.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an embodiment of the recording apparatus of the present invention, FIG. 2 is an explanatory side view of FIG. 1, FIG. 3 is an explanatory view of the document placement part, and FIG. Fig. 5 is an explanatory diagram of the recording operation, Fig. 6 is a system diagram of the reading position control circuit, Figs. 7 and 8 are explanatory diagrams of the copying principle, Fig. 9 is an explanatory diagram when combined with a word processor, etc., and Fig. 10. , FIG. 11 is an explanatory diagram of a conventional recording apparatus. 16... Original, 17... Original holder, 22... Liquid crystal display board, 25... Mobile reading device, 26... Illumination, 2
9... Photoelectric conversion element, 32... Recording paper, 33... Platen, 36... Ink ribbon, 37... Thermal head, 38... Paper cassette, 58... CPU, 6
9...Word processor.

Claims (1)

[Claims] 1. A recording device that includes a document reading section that reads characters and figures represented by dots using a photoelectric conversion element, and a printing section that prints the information read by the document reading section. 2. A recording apparatus according to claim 1, further comprising a reading position control circuit that prevents erroneous reading by aligning the dot center position of the character or figure with the reading center position of the photoelectric conversion element. 2. The recording apparatus according to claim 1, wherein the document reading section has means for slightly moving the photoelectric conversion element in the reading direction. 3. The reading line density of the original reading unit has either a positive number multiple of the least common multiple of 10 and 12 dots/inch, or a negative power of 2 times the least common multiple of 10 and 12 dots/inch. A recording device according to claim 1. 4. The reading linear density of the document reading unit is either a positive number multiple of 72 dots/inch or a negative power of 2 dots/inch 72. Recording device. 5. The recording apparatus according to claim 1, wherein the reading line density of the document reading section is 2 to the power of a positive number dots/mm.