CN219145438U - Quick scanning system and image forming device - Google Patents
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- CN219145438U CN219145438U CN202321022499.7U CN202321022499U CN219145438U CN 219145438 U CN219145438 U CN 219145438U CN 202321022499 U CN202321022499 U CN 202321022499U CN 219145438 U CN219145438 U CN 219145438U
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Abstract
The utility model discloses a rapid scanning system and an image forming device, wherein the scanning system comprises a scanning unit, an analog-to-digital conversion unit, a motor unit and a control unit; the scanning unit is used for respectively scanning the front surface and the back surface of the sheet when receiving a scanning instruction and correspondingly outputting front surface scanning data and back surface scanning data; the analog-to-digital conversion unit is an analog multiplexer and is electrically connected with the scanning unit, and the analog-to-digital conversion unit is used for receiving the scanning data of the front side and the back side and performing analog-to-digital conversion to digital signals for output; the motor unit is used for driving the scanning unit to move relative to the sheet when receiving the moving instruction; the control unit is respectively and electrically connected with the scanning unit, the analog-to-digital conversion unit and the motor unit, and is used for outputting a scanning instruction and a moving instruction, receiving digital signals of the front side and the back side and correspondingly carrying out graphic processing. The utility model can perform rapid scanning operation and solve the problem of how to correctly place the front and back sides of the scanned file.
Description
Technical Field
The present utility model relates to the field of image forming technologies, and in particular, to a fast scanning system and an image forming apparatus.
Background
With the advancement and development of technology, the integration and application of multimedia (multimedia) has become a trend. Multimedia is a data content including various data formats such as text, video, and audio. In order to enable data to be displayed in multimedia form, various multimedia devices capable of capturing images or sounds have been developed, and for image processing, a scanner (scanner) is one of image capturing tools frequently used by users. The scanner of the existing image forming apparatus is generally provided with only a single-sided scanning function, and for documents requiring a large amount of scanning, not only a large amount of time is required, but also a user is required to manually perform front-back switching; and because of the randomness of document placement, if a user breaks the sequence of the source documents when switching the front and the back, the documents consistent with the source documents cannot be scanned, and the user experience is seriously affected.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a rapid scanning system and an image forming device, which are used for solving the problems that a user can not scan a document consistent with a source document when the sequence of the source document is disturbed during the front and back switching, and the user needs to repeatedly place sheets to finish the scanning work.
According to an aspect of the present utility model, there is provided a fast scanning system for an image forming apparatus, including a scanning unit, an analog-to-digital conversion unit, a motor unit, and a control unit;
the scanning unit comprises a first sub-scanning unit and a second sub-scanning unit, wherein the first sub-scanning unit and the second sub-scanning unit are respectively used for scanning the front surface and the back surface of the sheet when receiving a scanning instruction and correspondingly outputting front surface scanning data and back surface scanning data;
the analog-to-digital conversion unit is an analog multiplexer and is respectively and electrically connected with the first sub-scanning unit and the second sub-scanning unit, and is used for receiving front scanning data and back scanning data, correspondingly converting the front scanning data and the back scanning data into a front digital signal and a back digital signal and outputting the front digital signal and the back digital signal;
the motor unit at least comprises a motor, and the motor unit is used for driving the first sub-scanning unit and the second sub-scanning unit to move relative to the sheet when receiving a moving instruction;
the control unit is respectively and electrically connected with the scanning unit, the analog-to-digital conversion unit and the motor unit, and is used for outputting a scanning instruction and a moving instruction, receiving a front digital signal and a back digital signal and correspondingly carrying out graphic processing.
According to the rapid scanning system, the two scanning units are constructed at the hardware level to scan the front side and the back side of the sheet at the same time, the front side and the back side of the sheet are distinguished after being processed by the analog-to-digital conversion unit, the document scanning speed is improved without increasing the cost, the user is not required to consider how to correctly place the document, and the user experience can be improved.
In some embodiments, the first sub-scanning unit and the second sub-scanning unit are respectively and electrically connected with different ports of the control unit, the scanning instruction comprises a first scanning instruction and a second scanning instruction, and the control unit outputs the first scanning instruction and the second scanning instruction to the first sub-scanning unit and the second sub-scanning unit respectively.
In some embodiments, the control unit continues to output the first scanning instruction or the second scanning instruction in a subsequent process of the scanning operation until the scanning operation is completed when the front digital signal or the back digital signal is not received in the scanning operation process; or (b)
And the control unit continuously outputs a first scanning instruction or a second scanning instruction in the follow-up process of the scanning operation until the scanning operation is completed when the control unit does not receive the corresponding front digital signal or the corresponding back digital signal in a preset time in the scanning operation process.
In some embodiments, the scanning system further comprises a detection unit electrically connected to the control unit, the detection unit being configured to detect whether a sheet is present and output a detection result, the control unit receiving the detection result and outputting a movement instruction.
In some embodiments, the motor unit includes a first motor and a second motor, the movement instruction includes a first movement instruction and a second movement instruction, and the control unit outputs the first movement instruction and the second movement instruction to the first motor and the second motor, respectively, so that the first motor and the second motor drive the first sub-scanning unit and the second sub-scanning unit to move, respectively.
In some embodiments, the motor unit includes a first motor, and the first motor drives the first sub-scanning unit and the second sub-scanning unit to move when receiving the movement command.
In some embodiments, the motor unit includes a first motor, and when the first motor receives the movement instruction, the first motor controls the paper feeder to drive the sheet to move between the first sub-scanning unit and the second sub-scanning unit.
In some embodiments, the first sub-scanning unit and/or the second sub-scanning unit is a contact image sensor.
In some embodiments, in a scanning process, if the front digital signal or the back digital signal does not exist when the scanning digital signal is received for the first time, the control unit disconnects the electrical connection of the first sub-scanning unit corresponding to the front digital signal or the second sub-scanning unit corresponding to the back digital signal until the scanning process is completed; or (b)
And in the process of scanning operation, if the front digital signal or the back digital signal does not exist when the scanning digital signal is received within the preset time, the control unit cuts off the electrical connection of the first sub-scanning unit corresponding to the front digital signal or the second sub-scanning unit corresponding to the back digital signal until the scanning operation is completed.
According to a second aspect of the present utility model, there is provided an image forming apparatus including the above-described fast scanning system.
Compared with the prior art, the rapid scanning system and the image forming device provided by the utility model have the advantages that the two scanning units are constructed at the hardware level to scan the front and the back of the sheet at the same time, the front and the back data of the sheet are distinguished after being processed by the analog-digital conversion unit, the document scanning speed is improved without increasing the cost, the user is not required to consider how to correctly place the document, and the user experience can be improved.
Drawings
FIG. 1 is a schematic block diagram of a fast scan system according to a first embodiment of the present utility model;
FIG. 2 is a schematic block diagram of a fast scan system according to a second embodiment of the present utility model;
fig. 3 is a schematic block diagram of a fast scan system according to a third embodiment of the present utility model.
Reference numerals illustrate: the apparatus includes a scanning unit 100, a first sub-scanning unit 110, a second sub-scanning unit 120, an analog-to-digital conversion unit 200, a control unit 300, a motor unit 400, a first motor 410, a second motor 420, a detection unit 500, and a paper feeder 600.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
According to a first aspect of the present utility model, fig. 1 schematically shows a fast scanning system according to an embodiment of the present utility model for an image forming apparatus. As shown in fig. 1, the fast scanning system includes a scanning unit 100, an analog-to-digital conversion unit 200, a control unit 300, and a motor unit 400.
The scanning unit 100 includes a first sub-scanning unit 110 and a second sub-scanning unit 120, where the first sub-scanning unit 110 and the second sub-scanning unit 120 are disposed in a scanning path of the image forming apparatus, and the first sub-scanning unit 110 and the second sub-scanning unit 120 respectively scan a front surface and a back surface of a sheet in the scanning path when receiving a scanning instruction, and correspondingly output front surface scanning data and back surface scanning data of the sheet; the first sub-scanning unit 110 and the second sub-scanning unit 120 are contact image sensors, and the corresponding contact image sensors collect reflected light formed after irradiating on the front and back surfaces of the sheet, and convert the reflected light into corresponding analog signals (i.e. front scanning data and back scanning data) for outputting, and the contact image sensors can adopt two 1Channel 4.5Mhz AnalogCIS, so that compared with the existing ADFs, the hardware cost can be reduced, and the sheet can be a normal paper type, a small-size paper type, a special paper type (not limited to thick paper, envelopes, label paper, films, cards and the like).
The analog-to-digital conversion unit 200 is electrically connected to the first sub-scanning unit 110 and the second sub-scanning unit 120, and the analog-to-digital conversion unit 200 is configured to receive the front scan data output by the first sub-scanning unit 110 and the back scan data output by the second sub-scanning unit 120, and perform analog-to-digital conversion correspondingly, and convert the front scan data and the back scan data into a front digital signal and a back digital signal for output; the analog-to-digital conversion unit 200 is an analog multiplexer, the analog multiplexer at least comprises a first input end, a second input end and an output end, the first input end of the analog multiplexer is electrically connected with the first sub-scanning unit 110 and receives front scanning data output by the first sub-scanning unit 110, the second input end of the analog multiplexer is electrically connected with the second sub-scanning unit 120 and receives back scanning data output by the second sub-scanning unit 120, the analog multiplexer performs analog-to-digital conversion on analog signals output by the first sub-scanning unit 110 and the second sub-scanning unit 120, and then selectively outputs one of the analog signals after analog-to-digital conversion from the output end based on control, the analog multiplexer can select a WM8199 external (3 channel,25MSPS,16 bit) AFE, the AFE can fully exert the efficiency of hardware resources, the AFE can collect data from a contact image sensor for front-back scanning at the same time, and the speed of processing front-back scanning data is consistent with the speed of processing single-sided scanning.
The control unit 300 is electrically connected to the first sub-scanning unit 110, the second sub-scanning unit 120, the analog-to-digital conversion unit 200, and the motor unit 400, respectively, the control unit 300 is configured to output a scanning command to the first sub-scanning unit 110 and the second sub-scanning unit 120, so that the first sub-scanning unit 110 and the second sub-scanning unit 120 start scanning operation, the control unit 300 is further configured to output a selection signal to the analog multiplexer, so that the analog multiplexer outputs one of the digital signals after analog-to-digital conversion from the output end, and receive the front digital signal and the back digital signal converted by the analog multiplexer and perform graphics processing corresponding to the received digital signals, and in addition, the control unit 300 is further configured to output a movement command to the motor unit 400, so as to control the motor unit 400.
In addition, the control unit 300 is further connected to a detection unit 500, and the detection unit 500 is configured to detect a source document, i.e., a sheet, which needs to be subjected to a scanning task, and if the source document is detected to exist, output a signal to the control unit 300, and the control unit 300 confirms that the source document is ready, and sends a movement instruction to the motor unit 400 to control the motor unit 400.
The first sub-scanning unit 110 and the second sub-scanning unit 120 are electrically connected to different ports of the control unit 300, the scanning instructions include a first scanning instruction and a second scanning instruction, the control unit 300 outputs the first scanning instruction and the second scanning instruction to the first sub-scanning unit 110 and the second sub-scanning unit 120, and controls the first sub-scanning unit 110 and the second sub-scanning unit 120, respectively, so that the image forming apparatus has a single-sided scanning function and a double-sided scanning function, and an operator can switch the single-sided scanning function and the double-sided scanning function as required. Of course, in other embodiments, the first sub-scanning unit 110 and the second sub-scanning unit 120 may be electrically connected to the same port of the control unit 300, and accordingly, the image forming apparatus has only the double-sided scanning function.
In one embodiment, the control unit 300 continues to output the first scan instruction or the second scan instruction in the subsequent process of the scan operation until the scan operation is completed when the front digital signal or the back digital signal is not received in the process of one scan operation; that is, when the image forming apparatus is in a double-sided scanning state (may be a default state of the image forming apparatus) or a double-sided scanning instruction is input to the control unit 300 by a key (when the image forming apparatus is in a single-sided scanning state, if scanning is required for both sides of a sheet, it is necessary to switch to the double-sided scanning state), during this scanning operation, the control unit 300 outputs a first scanning instruction, a second scanning instruction to the first sub-scanning unit 110, and the second sub-scanning unit, respectively, so that the first sub-scanning unit 110 and the second sub-scanning unit 120 scan the front side and the back side of a plurality of sheets, and no control unit 300 can receive a front digital signal or a back digital signal during this scanning operation, neither the control unit 300 stops outputting the first scanning instruction or the second scanning instruction.
In one embodiment, during a scanning operation, if there is no front digital signal or no back digital signal when the scanning digital signal is received for the first time, the control unit 300 disconnects the electrical connection of the first sub-scanning unit 110 corresponding to the front digital signal or the second sub-scanning unit 120 corresponding to the back digital signal until the scanning operation is completed; that is, when the image forming apparatus is in a single-sided scanning state (may be a default state of the image forming apparatus) or a single-sided printing instruction is input to the control unit 300 by a key (when the image forming apparatus is in a double-sided scanning state, it may be switched to the single-sided scanning state if only one side of the sheet needs to be scanned), the first sub-scanning unit 110 and the second sub-scanning unit 120 scan the front side and the aspect of the sheet, if the control unit 300 receives a digital signal for the first time after describing the sheet, if only the front side digital signal of the corresponding sheet can be received, it indicates that the front side of the sheet has content, and the back side has no content, then in a subsequent process in this description (starting from the sheet after the sheet), the control unit 300 disconnects the electrical connection of the second sub-scanning unit 120, so that the second sub-scanning unit 120 stops the scanning operation until the scanning operation is completed; on the contrary, when the control unit 300 receives the scanning digital signal for the first time, if only the corresponding digital signal on the opposite side of the sheet can be received, it indicates that the opposite side of the sheet has content, and the opposite side has no content, then in the subsequent processing in this description (starting from the sheet after the sheet), the control unit 300 disconnects the electrical connection of the first sub-scanning unit 110, so that the first sub-scanning unit 110 stops the scanning operation, and since only the scanning operation of the opposite side page is performed later, the confusion of how the user places the front and the back of the manuscript in the single-sided scanning can be solved, and compared with the double-sided scanning, although both can solve the confusion of how the front and the back of the manuscript in the single-sided scanning are placed, the manner can also reduce unnecessary operations and reduce energy and equipment loss.
It should be noted that, for the control unit 300 to control the first sub-scanning unit 110 and the second sub-scanning unit 120 to scan, and to disconnect the electrical connection of the first sub-scanning unit 110 or the second sub-scanning unit 120, the electrical connection may be realized by a switch such as a triode or a relay, and specifically, the switch such as a triode or a relay is used as an on-off switch of the first sub-scanning unit 110 and the second sub-scanning unit 120, and the control unit 300 controls the on-off of the switch such as a triode or a relay by outputting a high level and a low level, so as to realize the on-off electrical control of the first sub-scanning unit 110 and the second sub-scanning unit 120.
The motor unit 400 is electrically connected to the control unit 300, and when the motor unit 400 receives a movement instruction, the motor unit 400 moves the first sub-scanning unit 110 and the second sub-scanning unit 120 relative to the sheet; specifically, the motor unit 400 includes a first motor 410 and a second motor 420, the first motor 410 and the second motor 420 are respectively connected with different ports of the control unit 300, the corresponding movement instructions output by the control unit 300 include a first movement instruction and a second movement instruction, and the first movement instruction and the second movement instruction are output to the first motor 410 and the second motor 420 through different ports, so that the first motor 410 and the second motor 420 respectively drive the first sub-scanning unit 110 and the second sub-scanning unit 120 to move in a scanning path, and the front and the aspects of the sheet in the scanning path are scanned.
It should be noted that, when the control unit 300 stops outputting the first scan command to the first sub-scan unit 110, it also stops outputting the first move command to the first motor 410, and correspondingly, when the control unit 300 stops outputting the second scan command to the second sub-scan unit 120, it also stops outputting the second move command to the second motor 420.
In other embodiments, as shown in fig. 2, the motor unit 400 includes a first motor 410, and the first motor 410 drives the first sub-scanning unit 110 and the second sub-scanning unit 120 to move when receiving a movement command, that is, whether the image forming apparatus is in a single-sided scanning functional state or a double-sided scanning functional state, where the first sub-scanning unit 110 and the second sub-scanning unit 120 are all moved by the same motor, and in the two functional states, the difference is that in the single-sided scanning functional state, one of the scanning units stops the scanning operation.
In other embodiments, as shown in fig. 3, the motor unit 400 includes a first motor 410, when the first motor 410 receives a movement instruction, the paper feeder 600 is controlled to drive the sheet to move between the first sub-scanning unit 110 and the second sub-scanning unit 120, that is, the first sub-scanning unit 110 and the second sub-scanning unit 120 are fixed in a scanning path in a fixed manner, and the first motor 410 drives the paper feeder 600 to rotate, so as to drive the sheet to move between the first sub-scanning unit 110 and the second sub-scanning unit 120, and complete the scanning operation on the front and the aspects of the sheet, correspondingly, if the image forming apparatus is in a single-sided scanning function state, the control unit 300 only needs to correspondingly stop outputting the scanning instruction to the scanning unit on the other side.
In other embodiments, it may also be determined by a preset time whether the front and back sides of the front sheet have content, specifically, the control unit 300 may switch to a single-sided scanning state if only one side of the sheet needs to be scanned during a scanning operation, if no front digital signal or no back digital signal exists when the scanning digital signal is received within the preset time, and if the rotation speed of the motor unit 400 in the image forming apparatus (controlled by the control unit 300) is known, the electrical connection between the first sub-scanning unit 110 corresponding to the front digital signal and the second sub-scanning unit 120 corresponding to the back digital signal is disconnected until the scanning operation is completed, that is, when the image forming apparatus is in a single-sided scanning state (may be a default state of the image forming apparatus) or when a single-sided printing instruction is input to the control unit 300 through a key (when the image forming apparatus is in a double-sided scanning state, if only one side of the sheet needs to be scanned), and if only one side of the sheet needs to be scanned, the length of the sheet (may be measured by the sensor and the result is output to the control unit 300), and if the rotation speed of the motor unit 400 in the image forming apparatus is known (controlled by the control unit 300), the first sub-scanning unit 110 and the second sub-scanning unit 120 scan the front sheet (i.e. the preset time) may be in a single-sided scanning state (default) or a default state) may be determined, and the single-sided scanning state may be started, and the scanning operation may be performed, and if the scanning operation of the sheet is started and the control unit is started, and the control unit 300 may be stopped.
In one embodiment, the control unit 300 continues to output the first scan instruction or the second scan instruction in the subsequent process of the scan operation until the scan operation is completed when the corresponding front digital signal or the corresponding back digital signal is not received within the preset time during the scan operation; that is, when the image forming apparatus is in a double-sided scanning state (may be a default state of the image forming apparatus) or a double-sided scanning instruction is input through a key (when the image forming apparatus is in a single-sided scanning state, if a double-sided scanning of a sheet is required, the double-sided scanning is required), the control unit 300 outputs a first scanning instruction and a second scanning instruction to the first sub-scanning unit 110 and the second sub-scanning unit, respectively, during the scanning operation, so that the first sub-scanning unit 110 and the second sub-scanning unit 120 scan the front side and the aspect of the multi-page sheet, and no control unit 300 can receive a front digital signal or a back digital signal within the preset time, and the control unit 300 does not stop outputting the first scanning instruction or the second scanning instruction.
According to the rapid scanning system, the two scanning units are constructed at the hardware level to scan the front side and the back side of the sheet at the same time, the front side and the back side of the sheet are distinguished after being processed by the analog-to-digital conversion unit 200, the document scanning speed is improved without increasing the cost, the user is not required to consider how to correctly place the document, and the user experience can be improved.
According to a second aspect of the present utility model, there is provided an image forming apparatus including the above-described fast scanning system, wherein the image forming apparatus is for performing image forming jobs such as scanning, generating, printing, receiving and transmitting image data, and examples of the image forming apparatus include printers with scanning functions, scanners, copiers, facsimile machines, and multifunction peripherals (MFP, multi-Functional Peripheral) that perform the above functions in a single device.
What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (10)
1. A fast scanning system for an image forming apparatus, comprising:
the scanning unit comprises a first sub-scanning unit and a second sub-scanning unit, wherein the first sub-scanning unit and the second sub-scanning unit are respectively used for scanning the front surface and the back surface of the sheet when receiving a scanning instruction and correspondingly outputting front surface scanning data and back surface scanning data;
the analog-to-digital conversion unit is an analog multiplexer and is electrically connected with the first sub-scanning unit and the second sub-scanning unit respectively, and is used for receiving the front scanning data and the back scanning data, and correspondingly converting the front scanning data and the back scanning data into a front digital signal and a back digital signal to be output;
the motor unit at least comprises a motor, and the motor unit is used for driving the first sub-scanning unit and the second sub-scanning unit to move relative to the sheet when receiving a moving instruction;
the control unit is respectively and electrically connected with the scanning unit, the analog-to-digital conversion unit and the motor unit, and is used for outputting the scanning instruction and the moving instruction, receiving the front digital signal and the back digital signal and correspondingly carrying out graphic processing.
2. The rapid-scan system of claim 1, wherein the first and second sub-scan units are electrically connected to different ports of the control unit, respectively, the scan instructions comprise first and second scan instructions, and the control unit outputs the first and second scan instructions to the first and second sub-scan units, respectively.
3. The rapid scan system according to claim 2, wherein the control unit continues outputting the first scan instruction or the second scan instruction in a subsequent process of the scan operation until the scan operation is completed when the front digital signal or the back digital signal is not received in a process of the scan operation; or (b)
And in the process of a scanning operation, if the control unit does not receive the corresponding front digital signal or the corresponding back digital signal within a preset time, continuing to output the first scanning instruction or the second scanning instruction in the subsequent process of the scanning operation until the scanning operation is completed.
4. A rapid scan system according to any of claims 1 to 3, further comprising a detection unit electrically connected to the control unit, the detection unit being adapted to detect the presence of a sheet and to output a detection result, the control unit receiving the detection result and outputting the movement instruction.
5. A fast scan system according to any one of claims 1 to 3, wherein the motor unit comprises a first motor and a second motor, the movement instructions comprise a first movement instruction and a second movement instruction, and the control unit outputs the first movement instruction and the second movement instruction to the first motor and the second motor respectively, so that the first motor and the second motor drive the first sub-scan unit and the second sub-scan unit respectively to move.
6. A fast scan system according to any one of claims 1 to 3, wherein the motor unit comprises a first motor which, upon receipt of the movement instruction, moves the first sub-scan unit and the second sub-scan unit.
7. A fast scanning system according to any one of claims 1 to 3, wherein the motor unit comprises a first motor which, upon receipt of the movement instruction, controls a feeder to move the sheet between the first sub-scanning unit and the second sub-scanning unit.
8. A fast scan system according to any one of claims 1 to 3, wherein the first sub-scan unit and/or the second sub-scan unit is a contact image sensor.
9. A fast scanning system according to any one of claims 1-3, wherein said control unit, during a scanning operation, if there is no said front digital signal or said back digital signal when a scanning digital signal is received for the first time, disconnects the electrical connection of said first sub-scanning unit corresponding to said front digital signal or said second sub-scanning unit corresponding to said back digital signal until said scanning operation is completed; or (b)
And in the process of a scanning operation, if the front digital signal or the back digital signal does not exist when the scanning digital signal is received within a preset time, the control unit cuts off the electrical connection of the first sub-scanning unit corresponding to the front digital signal or the second sub-scanning unit corresponding to the back digital signal until the scanning operation is completed.
10. An image forming apparatus comprising the fast scanning system according to any one of claims 1 to 9.
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