JPS61274570A - Information reader - Google Patents

Abstract

PURPOSE:To enable a readout in a sub-scanning direction by constituting a device in such a way that it can freely be loaded and unloaded in a state to link an original carrying part with a handy scanner part and a state to disconnect them so that a running roller abuts on a paper feeding roller. CONSTITUTION:In a manual reading, a handy scanner part 1 is disconnected from an original carrying part 2 and it is manually moved in a sub-scanning direction A keeping the state that the running rollers 7 and 8 in the scanner part 1 are pushed to an original 3. At such a time, an image information on an original surface irradiated by a light source 6 becomes reflecting light and is image-formed on a solid-state image pickup element 4 by a lens 5. And electric charge accumulated at the element 4 is read out based on a main scanning control signal generated from a reading control signal generating means 16 which is provided at the roller 7. In an automatic reading, the scanner part 1 is placed on the carrying part 2 and a paper feeding roller 11 is driven by a driving motor 14 with putting the original 3 between the roller 11 and the roller 7. The reading is performed in the same manner at the scanner part 1 and the electric charge is read out by the control signal from the driving means at the motor 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an information reading device for reading image information in an arbitrary area.

2. Description of the Related Art Conventionally, in this type of simple information reading device, a handy scanner is fixed to a document transport table by a holder that is detachably held, and a document is transferred from a to (Japanese Patent Application Laid-Open No. 56-4879), in which the information is read by being conveyed in the scanning direction.

Problems to be Solved by the Invention In such conventional information reading devices, the conveyance roller is provided at a predetermined angle with respect to the reference plane in order to convey the document while aligning it with the reference plane in the sub-scanning direction. Ori,
It has been difficult to perform reading control by detecting the relative movement amount in the sub-scanning direction between the handy scanner and the document.

The present invention has been made in view of these points, and an object of the present invention is to provide an information reading device that has a simple configuration and is capable of controlling reading in the sub-scanning direction.

Means for Solving the Problems The information reading device of the present invention includes a solid-state image sensor that reads image information of a document and converts it into an image signal, a light source that illuminates the document, and a light source that illuminates the document in the sub-scanning direction. The handy scanner section is provided with a rotatable traveling roller and a reading control signal generating means that generates a signal corresponding to a moving distance as the carrier moves in the sub-scanning direction of the original. A paper feed roller that rotates, a drive motor that rotationally drives the paper feed roller, and a drive control means for the drive motor are provided in the document conveyance section, and the handheld scanner section and the document conveyance section are connected to the travel roller. The document transport section and the handy scanner section are configured to be removably connected to each other so that the document transport section and the paper feed roller are in contact with each other, and the handy scanner section is detached from the document transport section. During manual reading when removed from the scanner section, an image signal is read from the solid-state image sensor based on the output signal of the reading control signal generating means, and during automatic reading when the handheld scanner section and document transport section are connected, drive control of the drive motor is performed. It is characterized in that the image signal is read out from the solid-state image sensor based on the signal obtained from the means.

Function: With this configuration, the means for generating a reading control signal corresponding to the relative moving distance of the document in the sub-scanning direction can perform manual reading in which the document is fixed and the handheld scanner section is manually read and scanned, and manual scanning in which the document is fixed and the handheld scanner section is manually read and scanned. Reading and scanning can be performed in either state, including automatic reading in which the document is automatically conveyed and read and scanned.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3. In the figure, 1 is a handy scanner section, 2 is a document conveyance section, and 3 is a document on which image information is recorded. The handy scanner unit 1 includes a solid-state image sensor 4 that reads image information of a document 3 and converts it into an image signal, an imaging lens 5 that forms an image of the image information to be read on the solid-state image sensor 4, and a lens that illuminates the document 3. a light source 6, and a running roller 7 that rotates the handy scanner section 1 relative to the document surface in the sub-scanning direction A.
8, and a reading control signal generating means 16 consisting of a rotating disk 9 that comes into contact with the traveling roller 7 and its detection element 10. On the other hand, the document transport section 2 transports the document 3
a paper feed roller 11.12 rotating in the sub-scanning direction A;
It has a drive motor 14 that drives the paper feed roller 11 via a transmission belt 13, and drive control means (not shown) for the drive motor 14.

Although not shown, the handy scanner section 1 and the document transport section 2 are arranged so that the running roller 7 and the paper feed roller 11 are in contact with each other, as shown in FIG. The portable scanner section 1 is configured to be detachable between a state in which the scanner section 1 is connected to the scanner section 1 and a state in which the handy scanner section 1 is removed from the document transport section 2.

In the information reading device configured as described above, image signals are read from the solid-state image element 4 in the following manner during manual reading and automatic reading, respectively.

During manual scanning, the handy scanner section 1 is removed from the document transport section 2, and the operator places the traveling rollers 7 of the handy scanner section 1 on the document 3 placed on a flat surface such as a desk.
．． 8 is pressed and manually moved in the sub-scanning direction A. At this time, the document surface is irradiated by the light source 6 consisting of illumination means such as a fluorescent lamp, and the image information recorded on the document surface becomes reflected light and is reduced by the imaging lens 5 and CO
The solid-state device 4 in which photoelectric conversion devices such as D are arranged in a row
is imaged. The reflected light incident on the solid-state image sensor 4 is photoelectrically converted, and charges are accumulated depending on the intensity of the light. A reading control signal generating means 16 provided on the traveling roller 7
Reading is performed by sequentially reading out the charges accumulated in the solid-state image sensor 4 based on a main scanning control signal generated from the solid-state image sensor 4.

Next, during automatic reading, the handy scanner section 1 is placed and fixed on the document transport section 2, as shown in FIGS.
is held between the paper feed roller 11 and the running row 57,
The document 3 is conveyed by driving the paper feed row 511 by the drive motor 14, and is conveyed through between the running roller 8 and the paper feed roller 12. The image information recorded on the document surface is read by the handy scanner section 1 in the same manner as in the manual reading method described above. In other words, during automatic reading,
The operator simply inserts the original 3 between the running roller 7 and the paper feed O-roller 12, and the original 3 is automatically conveyed and read. Charges corresponding to the image information accumulated in the solid-state image sensor 4 are sequentially read out based on a main scanning control signal supplied from a drive control means of the drive motor 14.

FIG. 3 shows the configuration of the main scanning control signal switching section during manual reading and automatic reading. Reference numeral 15 denotes a main scanning control signal changeover switch, and in the case of manual reading, the main scanning control of the solid-state image pickup device 4 is performed by the signal from the generating means 16 consisting of the rotating disk 9 and the detection element 10. In this case, the main scanning control is performed by switching the switch 15 and using a signal from the drive control means of the drive motor 14.

As described in the detailed description of the invention, the information reading device of the present invention can read image information recorded on a document by either manual reading or automatic reading, and has the following effects. .

In the present invention, during manual reading, the reading control signal generating means provided on the handy scanner side can perform main scanning control corresponding to the sub-scanning movement distance of the handy scanner even when the manual reading speed changes. Also, during automatic reading, main scanning control corresponding to the sub-scanning distance of the document is performed using signals from the drive control means of the drive motor that drives the paper feed roller that conveys the document in the sub-scanning direction. If the processing time of the read image information in the information processing device becomes longer than the reading time, the drive control means stops the conveyance of the document in the sub-scanning direction, and at the same time, the reading of the solid-state rim element is also stopped, and the image information is When the processing is completed, the conveyance of the original is started again, and the reading is restarted, so that the image information recorded on the original can be read seamlessly and faithfully, and its practical effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of an embodiment of the information reading device of the present invention, FIG. 2 is a side view of the same device, and FIG. 3 is a block diagram of a main scanning control signal switching circuit of the same device. 1... Handy scanner section, 2... Original transport section,
4... Solid-state image sensor, 7... Traveling roller, 9...
- Rotating disk, 10... Detection element, 11... Paper feed roller, 14... Drive motor, 16... Reading control signal generating means, A... Sub-scanning direction Fig. 1 Fig. 2 Figure 3/4'

Claims (1)

[Scope of Claims] 1. A solid-state image sensor that reads image information of a document and converts it into an image signal, a light source that illuminates the document, and a traveling roller that can rotate in the sub-scanning direction on the surface of the document. , a reading control signal generating means for generating a signal corresponding to a moving distance as the carrier moves in the sub-scanning direction of the document is provided in the handy scanner section, a paper feed roller rotating in the sub-scanning direction of the document; A drive motor for rotationally driving the paper feed roller and a drive control means for the drive motor are provided in the document conveyance section, and the handy scanner section and the document conveyance section are arranged so that the traveling roller and the paper feed roller are in contact with each other. The conveyance section and the handy scanner section are configured to be detachable in a state in which the conveyance section and the handy scanner section are connected and a state in which the handy scanner section is removed from the document conveyance section, and during manual reading when the handy scanner section is removed from the document conveyance section, the reading control signal generating means is provided. An image signal is read out from the solid-state image sensor based on the output signal of the solid-state image sensor, and during automatic reading when the handy scanner section and the document transport section are connected, the image signal is read out from the solid-state image sensor based on the signal obtained from the drive control means of the drive motor. An information reading device configured to read signals. 2. The information reading device according to claim 1, wherein the drive motor is a synchronous motor.