CN2669281Y - Automatic document feeder for single/double side scanning - Google Patents

Abstract

An automatic document feeder for single/double-sided scanning. In order to provide a simple structure, convenient operation, can choose the scanner attachment of the single-sided/two-sided paper feed, propose the utility model, it includes the paper separation organization, scans the window, sets up the paper feed channel between paper separation organization and scanning window, channel selector switch, turn over the channel and paper out channel linked with the paper feed channel; the paper feeding channel comprises a single-side scanning paper feeding channel connected between the paper separating mechanism and the paper discharging channel and a double-side scanning paper feeding channel connected between the paper separating mechanism and the turnover channel; the channel selection switch is arranged in front of the single-side scanning paper feeding channel and the double-side scanning paper feeding channel.

Description

Automatic document feeder for single/duplex scanning

technical field

The utility model belongs to an accessory device of a scanner, in particular to an automatic file feeder for single/double-sided scanning.

Background technique

Due to the rapid development of scanners, the demand for scanners with automatic document feeders (Automatic Document Feeder, ADF) as photocopiers or mass scanning is increasing.

Current automatic document feeders generally have a function for single-sided scanning and a function for double-sided scanning.

As shown in FIG. 1 , an automatic document feeder 10 for double-sided scanning generally includes a paper feeding path 12 , a scanning window 13 , a paper turning path 14 and a roller 15 . Since the automatic document feeder 10 has only one paper feeding channel 12 , no matter scanning a single-sided document or a double-sided document, the scanned document needs to pass through the paper turning channel 14 before leaving the automatic document feeder 10 .

The structure of the automatic document feeder 10 as shown in FIG. 1 is convenient for scanning double-sided documents, but for scanning single-sided documents, it must go around the paper turning channel 14 to scan, so that the scanning speed is affected. Moreover, the rollers 15 on the scanning window 13 must be reversed when scanning different surfaces, resulting in complexity in mechanism and control.

Contents of the invention

The purpose of the utility model is to provide an automatic file feeder for single/double-sided scanning.

The utility model is configured on the image capture device, which includes a paper separation mechanism, a scanning window, a paper feeding channel arranged between the paper separating mechanism and the scanning window, a channel selection switch, a turning channel connected with the paper feeding channel and The paper output channel; the paper feeding channel includes a single-sided scanning paper feeding channel connected between the paper separation mechanism and the paper output channel and a double-sided scanning paper feeding channel connected between the paper separating mechanism and the turning channel. The channel selection switch is set on Before the single-sided scanning paper path and before the double-sided scanning paper path.

in:

In front of the single-sided scanning document feeding path, there is a paper tray for placing documents to be scanned.

There is an output tray for placing scanned documents at the back of the output path.

The path selection switch has an upper guide surface for guiding a single scanned document to a paper feed path for single-sided scanning and a lower guide surface for guiding a single scanned document to a paper feed path for double-sided scanning.

The paper feed path for single-sided scanning, the paper feed path for double-sided scanning, the reverse path and the paper output path are respectively provided with paper feed rollers for driving single-scanning documents forward.

The single-sided scanning paper feeding path, the double-sided scanning paper feeding path and the inverting path are respectively equipped with paper sensors to provide the position of a single scanned document.

The image capture device is a flatbed scanner.

Since the utility model is configured on the image capture device, it includes a paper separation mechanism, a scanning window, a paper feeding channel arranged between the paper separating mechanism and the scanning window, a channel selection switch, and a turning channel connected with the paper feeding channel And the paper output channel; the paper feeding channel includes the single-sided scanning paper feeding channel connected between the paper separation mechanism and the paper output channel and the double-sided scanning paper feeding channel connected between the paper separating mechanism and the turning channel. Channel selection switch setting Before the single-sided scanning paper path and the double-sided scanning paper path. During the scanning operation, by means of the control of the channel selection switch, the single-sheet scanned document can enter the single-sided scanning paper feeding channel or the double-sided scanning paper feeding channel; when the single-sided scanning mode is selected, the single-sheet scanned file is controlled by the channel selection switch Enter the single-sided scanning paper feeding channel; at this time, when the document to be scanned passes the scanning window in the first traveling direction, and its front side is facing down and the back side is facing up, so the front side image is scanned in the single-sided scanning mode. Moreover, when the document is scanned, the front end of the document enters the output tray first, and the rear end enters the output tray last, with the front side of the document facing down. Therefore, when all documents are scanned, the order of the documents is the same as when they were placed in the tray. When the double-sided scanning mode is selected, the document to be scanned enters the double-sided scanning paper feeding channel through the control of the channel selection switch; at this time, when the document to be scanned passes the scanning window for the first time, it enters in the second direction of travel, and the document’s The reverse side is face down, so the duplex scan mode scans the reverse side of the document first. Afterwards, the document to be scanned enters the inverting passage in the second traveling direction, and after being inverted through the inverting passage, enters the scanning window in the first traveling direction. Therefore, when the document to be scanned passes through the scanning window for the second time, it enters in the first moving direction, and the front side of the document is facing down, so the double-sided scanning mode is to scan the reverse side first and then scan the front side. Moreover, when the document is scanned, the front end of the document enters the output tray first, and the rear end enters the output tray last, with the front side of the document facing down. Therefore, when all the documents are scanned, the order of the documents is the same as the order of the documents placed in the paper tray 22 . Therefore, regardless of the single-side scanning mode or the double-side scanning mode, the rotation direction of all the rollers of the present invention will not change, so no additional control is required. Not only the structure is simple, but also the operation is convenient, and single-sided and double-sided paper feeding can be selected, so as to achieve the purpose of the utility model.

Description of drawings

Fig. 1 is a schematic side view of the structure of a conventional double-sided automatic document feeder.

Fig. 2 is a schematic sectional view of the structure of the utility model.

Fig. 3 is a partially enlarged view of part A in Fig. 2 (single-sided scanning mode).

Fig. 4 is a partially enlarged view of part A in Fig. 2 (double-sided scanning mode).

Fig. 5 is a schematic diagram of the travel path of the document in the single-sided paper feeding mode of the present invention.

Fig. 6 is a second schematic diagram of the travel path of the document in the single-sided paper feeding mode of the present invention.

Fig. 7 is a schematic diagram of the travel path of the document in the double-sided paper feeding mode of the present invention.

Fig. 8 is a second schematic diagram of the travel path of the document in the double-sided paper feeding mode of the present invention.

Fig. 9 is the third schematic diagram of the travel path of the document in the double-sided paper feeding mode of the present invention.

Fig. 10 is a schematic diagram 4 of the travel path of the document in the double-sided paper feeding mode of the present invention.

Fig. 11 is a partially enlarged view of part B in Fig. 2 .

Detailed ways

As shown in Figure 2, the automatic document feeder 20 for single/double-sided scanning of the present invention includes a housing (housing) 21, an input tray (input tray) 22 for placing the document 1D to be scanned, and an input tray for placing The output tray (output tray) 23 of the scanned document, the feeder roller (feeder roller) 24 that pushes the document to be scanned 1D to the feeding direction, and separates the document to be scanned at the top from the rest of the documents to send out the document A separate mechanism for a sheet of scanned documents is a separation roller (separating roller) 25, a channel selection switch (swirling switch) 26 for selecting a single-sheet scanned document feeding channel, and a single-sheet scanned file traveling channel for single-sided scanning. Simplex paper path for single-sided scanning (simplex paper path) 27, double-sided scanning paper path (duplex paper path) 28 for single-sheet scanning file travel path during double-sided scanning, single-sheet scanning file turning path for double-sided scanning The reverse paper path (reverse paper path) 29, the output paper path (output paper path) 30 and the scanning window 31 for the scanning document travel path.

The single-sided scanning paper feed channel 27 is disposed between the paper separation roller 25 and the scanning window 31 , and is connected between the paper separation roller 25 and the paper output passage 30 .

The double-sided scanning paper feeding channel 28 is disposed between the paper separating roller 25 and the scanning window 31 , and is connected between the paper separating roller 25 and the turning channel 29 .

Of course, a separating pad (separating pad) 32 and a spring 33 providing the thrust of the separating pad 32 are also provided below the paper separating roller 25 . Using the friction force between the separation pad 32 and the separation roller 25, the documents can be sent out individually.

As shown in FIG. 2 , the automatic document feeder 20 for single/double-sided scanning of the present invention is arranged above the scanner 34 which is an image capture device of a flatbed scanner, so as to provide the function of automatic document feeding.

The scanner 34 has a movable frame 35 for aligning the scanning window 31 of the scanner 34 with the automatic document feeder 20 for single/duplex scanning during scanning to perform image scanning.

The channel selection switch 26 is arranged before the single-sided scanning paper feeding channel 27 and the double-sided scanning paper feeding channel 28. Documents are guided to the lower guide surface 262 of the duplex scanning paper feed path 28 .

In addition, the single-sided scanning paper feeding channel 27 is provided with delivery rollers 1R1 and 1R2; the double-sided scanning paper feeding channel 28 is provided with a delivery roller 1R3; the turning channel 29 is provided with a delivery roller 1R4, 1R5 and 1R6; the paper output channel 30 is provided with paper feeding rollers 1R7 and 1R8. Paper feed path 27 for single-sided scanning, paper feed path 28 for double-sided scanning, reverse path 29, and paper output path 30 make use of paper feed rollers 1R1, 1R2, 1R3, 1R4, 1R5, 1R6, 1R7, and 1R8 to scan documents 1D can move forward smoothly. Moreover, the single-sided scanning paper feeding channel 27 is also provided with a paper sensor (paper sensor) 1S1; the double-sided scanning paper feeding channel 28 is provided with a paper sensor 1S2; the turning channel 29 is provided with a paper sensor 1S3; The paper feeding channel 27 for side scanning, the paper feeding channel 28 for double-sided scanning and the reverse side channel 29 use the paper sensors 1S1, 1S2 and S3 to provide the scanner with the position of a single scanned document, so as to locate the document.

As shown in FIG. 3 and FIG. 4 , during the scanning operation, by controlling the channel selection switch 26 , a single scanned document can enter the single-sided scanning paper feeding channel 27 or the double-sided scanning paper feeding channel 28 . As shown in FIG. 3 , when the upper guide surface 261 is lower than the hour separation pad 32 , it means switching to the single-sided scanning mode, and a single scanned document will be guided to the single-sided scanning paper feeding path 27 at this time. As shown in FIG. 4 , when the lower guiding surface 262 is higher than the paper separation pad 32 , it means switching to the double-sided scanning mode, and the single scanned document will be guided to the paper feeding path 28 for double-sided scanning. The channel selection switch 26 can be a rotatable mechanism, which can be rotated and adjusted by the user according to the single-sided or double-sided scanning mode. Of course, it can also be controlled by a switch and a motor or an actuator (solenoid), so that the user can use the switch to control the forward and reverse rotation of the motor or the action of the actuator, so as to drive the channel selection switch 26 to rotate.

As shown in FIG. 2 , FIG. 5 , and FIG. 6 , when the utility model selects the single-sided scanning mode, the single-sheet scanned document enters the single-sided scanning paper feeding channel 27 through the control of the channel selection switch 26 . At this time, when the document to be scanned passes through the scanning window 31 in the first traveling direction 1X, the front side 1F is facing down and the back side 1B is facing up, so the front side image is scanned in the single-sided scanning mode. Moreover, when the document is scanned, the front end 1H of the document enters the output tray 23 first, and the rear end 1T enters the output tray 23 later, and the front side 1F of the document faces downward. Therefore, when all the documents are scanned, the order of the documents is the same as the order of the documents placed in the paper tray 22 .

As shown in FIG. 2 and FIG. 7 , when the utility model selects the double-sided scanning mode, the document to be scanned enters the double-sided scanning paper feeding channel 28 through the control of the channel selection switch 26 . At this time, as shown in FIG. 8, when the document to be scanned passes through the scanning window 31 for the first time, it enters in the second traveling direction 1Y, and the reverse side 1B of the document faces downward, so the double-sided scanning mode first performs the reverse side 1B of the document. scanning. Afterwards, as shown in FIG. 9 , the document to be scanned enters the inverting channel 29 in the second traveling direction 1Y, and after being inverted through the inverting channel 29 , enters the scanning window 31 in the first traveling direction 1X. Therefore, as shown in FIG. 10 , when the document to be scanned passes through the scanning window 31 for the second time, it enters in the first traveling direction 1X, and the front side 1F of the document faces downward, so the double-sided scanning mode is to scan the back side 1B first. Then scan the front 1F. Moreover, as shown in FIG. 10 , when the document is scanned, the front end 1H of the document enters the output tray 23 first, and the rear end 1T enters the output tray 23 later, and the front side 1F of the document faces downward. Therefore, when all the documents are scanned, the order of the documents is the same as the order of the documents placed in the paper tray 22 .

As shown in FIG. 11 , there is a common roller 1R24 between the paper feed rollers 1R2 and 1R4 , so the rotation directions of the rollers 1R2 and 1R24 are opposite, while the rotation directions of the rollers 1R2 and 1R4 are the same. Driven by the rollers 1R2 and 1R24 , the documents in the single-side scanning paper feeding path 27 and the reverse path 29 can smoothly enter the scanning window 31 from the first traveling direction 1X (from left to right). Driven by the rollers 1R24 and 1R4, the document can enter the turning channel 29 from the second traveling direction 1Y (from right to left).

As shown in FIG. 11 , a common roller 1R37 is provided between the paper feed rollers 1R3 and 1R7 , so the rotation directions of the rollers 1R3 and 1R37 are opposite, while the rotation directions of the rollers 1R3 and 1R7 are the same. Driven by the rollers 1R3 and 1R37 , the documents in the double-sided scanning paper feeding path 28 can smoothly enter the scanning window 31 from the second traveling direction 1Y (from right to left). Driven by the rollers 1R37 and 1R7, the document can enter the paper output channel 30 from the scanning window 31 through the first traveling direction 1X (from right to left). Therefore, as shown in FIG. 5 and FIG. 6 , regardless of the single-side scanning mode or the double-side scanning mode, the rotation direction of all the rollers of the present invention will not change, so no additional control is required.

Claims (7)

1, a kind of autofile document feeder for list/duplex scanning, it is to be disposed on the image capture unit, and it comprises paper distributing mechanism, scans window, is arranged at paper distributing mechanism and the paper feed channel, the turn-over passage that is connected with paper feed channel and the paper delivery passage that scan between the window; It is characterized in that described paper feed channel comprises is connected in the single-sweep paper feed channel between paper distributing mechanism and the paper delivery passage and is connected duplex scanning paper feed channel between paper distributing mechanism and turn-over passage; And before single-sweep paper feed channel and duplex scanning paper feed channel, be provided with channel selector switch.

2, the autofile document feeder for list/duplex scanning according to claim 1 is characterized in that describedly being provided with the feeding box that is used for placing file to be scanned before single-sweep file paper feed channel.

3, the autofile document feeder for list/duplex scanning according to claim 1 is characterized in that the rear of described paper delivery passage is provided with the paper output box that is used for placing the file that has scanned.

4, the autofile document feeder for list/duplex scanning according to claim 1 is characterized in that described channel selector switch has the following guide surface that individual scanning document is guided to the last guiding face of single-sweep paper feed channel and individual scanning document is guided to the duplex scanning paper feed channel.

5, the autofile document feeder for list/duplex scanning according to claim 1 is characterized in that described single-sweep paper feed channel, duplex scanning paper feed channel, turn-over passage and paper delivery passage are respectively equipped with so as to driving the paper feeding roller bearing that the single sweep file advances.

6, the autofile document feeder for list/duplex scanning according to claim 1 is characterized in that described single-sweep paper feed channel, duplex scanning paper feed channel and turn-over passage are respectively equipped with so as to the paper sensor of individual scanning document position is provided.

7, the autofile document feeder for list/duplex scanning according to claim 1 is characterized in that described image capture unit is platform-type scanner.

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