CN114407543B - Paper feeding mechanism for double-sided printing function of ink-jet printer - Google Patents
Paper feeding mechanism for double-sided printing function of ink-jet printer Download PDFInfo
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- CN114407543B CN114407543B CN202111630378.6A CN202111630378A CN114407543B CN 114407543 B CN114407543 B CN 114407543B CN 202111630378 A CN202111630378 A CN 202111630378A CN 114407543 B CN114407543 B CN 114407543B
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- 238000007639 printing Methods 0.000 title claims abstract description 233
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 230000007306 turnover Effects 0.000 claims abstract description 68
- 239000007921 spray Substances 0.000 claims abstract description 33
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/046—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for the guidance of continuous copy material, e.g. for preventing skewed conveyance of the continuous copy material
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- Handling Of Cut Paper (AREA)
- Printers Characterized By Their Purpose (AREA)
Abstract
The invention relates to a paper feeding mechanism for a double-sided printing function of an ink-jet printer, which comprises a printing channel, a turnover channel and a paper ejection channel which are arranged in the printer. One side of the printing channel is provided with a spray head, the printing channel is sequentially provided with a double-sided paper withdrawal inlet, a double-sided printing outlet and a double-sided printing inlet, the double-sided paper withdrawal inlet is arranged at the upstream of the spray head, and the double-sided printing outlet and the double-sided printing inlet are both arranged at the downstream of the spray head. The inlet of the turnover channel is connected with the double-sided printing inlet, the outlet of the turnover channel is connected with the double-sided printing outlet, the first switch is arranged at the double-sided printing inlet, the second switch is arranged at the double-sided printing outlet, the inlet of the paper withdrawal channel is connected with the double-sided paper withdrawal inlet, the outlet of the paper withdrawal channel is connected with the outlet of the printing channel, and the third switch is arranged at the double-sided paper withdrawal inlet. The turnover channel is additionally arranged in the printer and used for enabling the paper to turn over, so that the speed of double-sided printing is improved.
Description
Technical Field
The invention relates to the field of printing, in particular to a paper feeding mechanism for a double-sided printing function of an ink-jet printer.
Background
When the printer is used for double-sided printing, the paper needs to be manually turned over and then put into a printing inlet for printing, the existing double-sided printing needs to be performed through the printing paper path twice, the paper needs to be turned over once, the whole turning process needs to be completed through the cooperation of a plurality of groups of paper rubbing wheels, and the double-sided printing speed is low.
Disclosure of Invention
First, the technical problem to be solved
The invention provides a paper feeding mechanism for a double-sided printing function of an ink-jet printer, and aims to solve the technical problem of low double-sided printing speed of paper in the prior art.
(II) technical scheme
In order to solve the problems, the invention provides a paper feeding mechanism for a double-sided printing function of an inkjet printer, wherein the paper feeding mechanism comprises a printing channel, a turnover channel and a paper returning channel which are arranged in the printer;
a spray head is arranged on one side of the printing channel; the printing device comprises a nozzle, a printing channel, a double-sided paper outlet, a double-sided printing inlet, a double-sided paper outlet and a double-sided printing inlet, wherein the printing channel is sequentially arranged from the inlet of the printing channel to the outlet of the printing channel;
the inlet of the turnover channel is connected with the double-sided printing inlet, the outlet of the turnover channel is connected with the double-sided printing outlet, a first switch is arranged at the double-sided printing inlet, and the first switch can control the on-off of the turnover channel and the double-sided printing inlet and control the on-off of the printing channel; the second switch is arranged at the double-sided printing outlet and can control the on-off of the turnover channel and the double-sided printing outlet and control the on-off of the printing channel;
an inlet of the paper returning channel is connected with the double-sided paper returning inlet, and an outlet of the paper returning channel is connected with an outlet of the printing channel; the double-sided paper-withdrawing inlet is provided with a third switch, and the third switch can control the on-off of the paper-withdrawing channel and the double-sided paper-withdrawing inlet and control the on-off of the printing channel.
Preferably, a plurality of pairs of paper feed roller groups are arranged on the printing channel, the overturning channel and the paper returning channel;
the paper feeding roller group on the printing channel can drive paper to enter from the inlet of the printing channel to the outlet of the printing channel;
the paper feeding roller group on the turnover channel and the paper returning channel can drive paper to enter the paper returning channel through the printing channel from the inlet of the turnover channel to the outlet of the turnover channel.
Preferably, on the printing channel, a paper feed roller group adjacent to the spray head at the upstream of the spray head is a first paper feed roller group, and a paper feed roller group adjacent to the spray head at the downstream of the spray head is a second paper feed roller group; the double-sided printing outlet is positioned between the spray heads and the second paper feeding roller group, and the double-sided paper withdrawing inlet is positioned between the first paper feeding roller group and the spray heads.
Preferably, the paper feeding roller group includes a driving roller and a driven roller which are oppositely arranged, the driving roller and the driven roller are both rotatably installed in the printer, the driving roller is connected with an output shaft of a motor, the driving roller can rotate under the driving of the motor, the printing channel, the turnover channel and the paper withdrawing channel are all positioned between the driving roller and the driven roller, and paper can pass through an area between the driving roller and the driven roller.
Preferably, the turnover channel comprises a first turnover paper channel, a second turnover paper channel and a third turnover paper channel, wherein the first turnover paper channel is connected with the double-sided printing inlet, the third turnover paper channel is connected with the double-sided printing outlet, and the second turnover paper channel is used for connecting the first turnover paper channel and the third turnover paper channel;
the paper returning channel comprises a first paper returning channel, a second paper returning channel and a third paper returning channel, the first paper returning channel is connected with an outlet of the printing channel, the third paper returning channel is connected with the double-sided paper returning inlet, and the second paper returning channel is used for connecting the first paper returning channel and the third paper returning channel;
the paper feeding roller group on the first turnover paper path and the first paper returning path share one driving roller; the second reversing paper path and the paper feeding roller group on the path opposite to the second reversing paper path share one driving roller.
Preferably, a negative pressure plate is arranged on the side, opposite to the spray head, of the printing channel, and the negative pressure plate can adsorb paper.
Preferably, the overturning channel is U-shaped.
Preferably, the double-sided printing inlet is rotatably provided with a first switch, and the first switch has two states:
when the first switch is in a first state, the double-sided printing inlet and the inlet of the turnover channel are in a closed state, and the first switch does not block the printing channel;
when the first switch is in the second state, the double-sided printing inlet and the inlet of the turnover channel are in a communication state, and the first switch can block the printing channel.
Preferably, a second switch is rotatably arranged at the duplex printing outlet, and the second switch has two states:
when the second switch is in a first state, the double-sided printing outlet and the outlet of the turnover channel are in a closed state, and the second switch does not block the printing channel;
when the second switch is in a second state, the double-sided printing outlet and the outlet of the turnover channel are in a communication state, and the second switch can block the printing channel.
Preferably, a third switch is rotatably arranged at the double-sided paper withdrawal inlet, and the third switch has two states:
when the third switch is in a first state, the inlet of the paper returning channel and the double-sided paper returning inlet are in a closed state, and the third switch does not block the printing channel;
when the third switch is in the second state, the inlet of the paper ejecting passage and the double-sided paper ejecting inlet are in a communication state, and the third switch can block the printing passage.
(III) beneficial effects
According to the invention, the turnover channel is additionally arranged in the printer and is used for enabling the paper to turn over, so that the reverse side of the paper passes through the nozzle from the downstream side of the nozzle and then reaches the upstream side of the nozzle, and further the reverse side of the paper is printed, which is different from the traditional paper turning over by the paper rubbing wheel, the turnover efficiency and the double-sided printing speed are improved, and the paper can be rapidly printed on double sides in the printer.
Drawings
FIG. 1 is a schematic diagram of a first switch, a second switch and a third switch in a paper feeding mechanism according to the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic diagram of the structure of the paper feeding mechanism of the present invention when the first switch, the second switch and the third switch are in the second state;
fig. 4 is an enlarged view of fig. 3 at B.
[ reference numerals description ]
1: a print channel; 11: a double-sided paper withdrawal inlet; 12: a duplex printing outlet; 13: a duplex printing inlet; 14: a first switch; 141: a first profile; 142: a second profile; 15: a second switch; 16: a third switch; 2: a turnover passage; 21: a first overturning paper path; 22: a second overturning paper path; 23: a third overturning paper path; 3: a paper withdrawal passage; 31: a first paper withdrawal path; 32: a second paper withdrawal path; 33: a third paper withdrawal path; 4: a spray head; 5: paper feed roller group; 51: a drive roll; 52: driven roller; 53: a first paper feed roller group; 54: a second paper feed roller group; 6: a negative pressure plate;
description of the embodiments
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 4, the present invention provides a paper feeding mechanism for a duplex printing function of an inkjet printer, the paper feeding mechanism comprising: a printing path 1, a reversing path 2, and a paper ejection path 3. One side of the printing channel 1 is provided with a spray head 4, a double-sided paper outlet 11, a double-sided printing outlet 12 and a double-sided printing inlet 13 are sequentially arranged on the printing channel 1 from the inlet of the printing channel 1 to the outlet of the printing channel 1, the double-sided paper outlet 11 is arranged at the upstream of the spray head 4, and the double-sided printing outlet 12 and the double-sided printing inlet 13 are both arranged at the downstream of the spray head 4. The upstream of the head 4 is the side of the head 4 facing the outlet of the printing passage 1, and the downstream of the head 4 is the side of the head 4 facing the outlet of the printing passage 1. The inlet of the turnover channel 2 is connected with the double-sided printing inlet 13, the outlet of the turnover channel 2 is connected with the double-sided printing outlet 12, a first switch 14 is arranged at the double-sided printing inlet 13, and the first switch 14 can control the on-off of the turnover channel 2 and the double-sided printing inlet 13 and control the on-off of the printing channel 1; the second switch 15 is arranged at the position of the double-sided printing outlet 12, and the second switch 15 can control the on-off of the turnover channel 2 and the double-sided printing outlet 12 and control the on-off of the printing channel 1. An inlet of the paper returning channel 3 is connected with a double-sided paper returning inlet 11, and an outlet of the paper returning channel 3 is connected with an outlet of the printing channel 1; the third switch 16 is arranged at the double-sided paper-withdrawing inlet 11, and the third switch 16 can control the on-off of the paper-withdrawing channel 3 and the double-sided paper-withdrawing inlet 11 and control the on-off of the printing channel 1. In the preferred embodiment, the first switch 14, the second switch 15 and the third switch 16 are rotatably installed in the printer, and each of the first switch 14, the second switch 15 and the third switch 16 is individually connected to a control motor, and the control motor is capable of controlling the rotation of the first switch 14, the second switch 15 and the third switch 16, and controlling the on/off of the printing path 1, the reversing path 2 and the paper discharging path 3 by controlling the rotation of the first switch 14, the second switch 15 and the third switch 16.
As shown in fig. 1, in the single-sided printing state, the first switch 14 controls the reversing channel 2 and the double-sided printing inlet 13 to be in a closed state, the second switch 15 controls the reversing channel 2 and the double-sided printing outlet 12 to be in a closed state, and the third switch 16 controls the paper ejection channel 3 and the double-sided paper ejection inlet 11 to be in a closed state; the paper directly enters the printing channel 1 from the inlet of the printing channel 1, then passes through the lower part of the spray head 4, finishes printing, and finally comes out from the outlet of the printing channel 1.
As shown in fig. 3, in the duplex printing state, the paper enters the printing path 1 from the entrance of the printing path 1, then enters the lower part of the head 4 from the upstream of the head 4, and then reaches the downstream of the head 4, and the front surface of the paper completes printing; when paper passes through the double-sided printing inlet 13, the first switch 14 controls the turnover channel 2 to be in a communication state with the double-sided printing inlet 13, and closes the blocked printing channel 1, the second switch 15 controls the turnover channel 2 to be in a communication state with the double-sided printing outlet 12, and the paper passes through the turnover channel 2 and then enters the printing channel 1 from the double-sided printing outlet 12, at the moment, the back surface of the paper faces the spray head 4, the paper enters the lower part of the spray head 4 from the downstream of the spray head 4, then enters the upstream of the spray head 4, finally enters the paper withdrawal channel 3 under the control of the third switch 16, and then exits from the outlet of the printing channel 1, thus completing double-sided printing.
According to the analysis, the turnover channel 2 is used for enabling the paper to turn over, so that the reverse side of the paper passes through the spray head 4 from the downstream side of the spray head 4 and then reaches the upstream side of the spray head 4, and further the reverse side of the paper is printed, which is different from the conventional paper turnover through the paper rubbing wheel, the turnover efficiency and the double-sided printing speed are improved, the paper with the reverse side printed enters the paper returning channel 3 to complete paper returning, and then double-sided printing is completed. According to the invention, the turnover channel 2 and the paper-withdrawing channel 3 are additionally arranged in the printer, so that the paper can be rapidly printed on double sides in the printer.
Further, a plurality of pairs of paper feed roller groups 5 are provided on the printing path 1, the reversing path 2, and the paper ejection path 3. The paper feed roller group 5 on the printing path 1 can drive the paper along the inlet of the printing path 1 to the outlet of the printing path 1. The paper feed roller group 5 on the reversing path 2 and the paper ejection path 3 can drive paper from the inlet of the reversing path 2 to the outlet of the reversing path 2, and then from the inlet of the paper ejection path 3 to the outlet of the paper ejection path 3 through the printing path 1. The paper feed roller group 5 comprises a driving roller 51 and a driven roller 52, the printing channel 1, the turnover channel 2 and the paper withdrawal channel 3 are all positioned between the driving roller 51 and the driven roller 52, the driving roller 51 and the driven roller 52 are rotatably arranged in the printer, the driving roller 51 is connected with a motor, the motor can drive the driving roller 51 to rotate, paper can pass through the area between the driving roller 51 and the driven roller 52, and the driving roller 51 can drive the paper to move. According to the invention, the motor drives the driving roller 51 to rotate so as to drive the paper to move in the set direction, and the paper feeding roller group 5 only needs to rotate in one direction, so that double-sided printing can be realized without changing the rotation direction, the service lives of the paper feeding roller group 5 and the motor are prolonged, and the speed of double-sided printing is accelerated.
In a preferred embodiment, as shown in fig. 1 and 3, the reversing channel includes a first reversing paper path 21, a second reversing paper path 22, and a third reversing paper path 23, the first reversing paper path 21 being connected to the duplex printing inlet, the third reversing paper path 23 being connected to the duplex printing outlet, the second reversing paper path 22 being used to connect the first reversing paper path 21 and the third reversing paper path 23. The paper-withdrawing channel comprises a first paper-withdrawing channel 31, a second paper-withdrawing channel 32 and a third paper-withdrawing channel 33, wherein the first paper-withdrawing channel 31 is connected with an outlet of the printing channel, the third paper-withdrawing channel 33 is connected with a double-sided paper-withdrawing inlet, and the second paper-withdrawing channel 32 is used for connecting the first paper-withdrawing channel 31 and the third paper-withdrawing channel 33. The first reversing paper path 21 and the paper feed roller group on the first paper exit path 31 share one driving roller; the second reversing path 22 and the second paper ejection path 32 share a single drive roller with the paper feed roller set on the path opposite the second reversing path 22. As shown in fig. 1 and 3, the movement directions of the sheets in the first reversing paper path 21 and the first paper returning paper path 31, and the second reversing paper path 22 and the second paper returning paper path 32 are opposite, so that the paper feeding roller groups on the first reversing paper path 21 and the first paper returning paper path 31 can share one driving roller, the paper feeding roller groups on the second reversing paper path 22 and the second paper returning paper path 32 can share one driving roller, the use amount of the driving rollers is reduced by arranging the shared driving rollers, the number of motors is effectively reduced by reasonable power distribution, and the cost is reduced.
Further, on the printing path 1, the paper feed roller group 5 adjacent to the head 4 upstream of the head 4 is the first paper feed roller group 53, and the paper feed roller group 5 adjacent to the head 4 downstream of the head 4 is the second paper feed roller group 54; the duplex printing outlet 12 is located between the second paper feed roller group 54 of the head 4, and the duplex paper ejection inlet 11 is located between the first paper feed roller group 53 and the head 4. That is, when the paper is at the outlet of the reversing channel 2 during the double-sided printing, the paper can enter the printing channel 1 under the driving of the paper feeding roller group 5 on the reversing channel 2 and then enter the paper withdrawal channel 3 through the spray head 4, the paper feeding roller group 5 on the printing channel 1 does not need to be driven in the process, the paper feeding roller group 5 on the printing channel 1 does not need to be reversed, the whole double-sided printing process is ensured that the paper feeding roller group 5 only needs to rotate in one direction, the steering is not required to be changed, the motor connected with the driving roller 51 is ensured to not need to change the steering, the service life of the motor paper feeding roller group 5 is prolonged, and the double-sided printing efficiency is improved.
In a preferred embodiment, a negative pressure plate 6 is provided on the side of the printing channel 1 opposite the ejection head 4, the negative pressure plate 6 being capable of adsorbing paper. The negative pressure plate 6 is used for adsorbing paper, so that the spray head 4 can better perform ink-jet printing on the paper, and the printing effect is improved. The overturning channel 2 is U-shaped. The sheet is deflected after passing through the reversing path 2, and the sheet is faced opposite the head 4 during the course from the inlet of the printing path 1 to the outlet of the printing path 1 in the printing path 1. When paper passes through the turnover channel 2 and enters the printing channel 1 from the double-sided printing outlet 12, then moves to the double-sided paper outlet 11 and enters the paper outlet 3 from the double-sided paper outlet 11, and the paper is opposite to the spray head 4 in the process of moving to the double-sided paper outlet 11 along the double-sided printing outlet 12 in the printing channel 1, so that the paper feeding mechanism provided by the invention can rapidly finish double-sided printing.
Finally, a first switch 14 is rotatably provided at the duplex printing inlet 13, the first switch 14 having two states. When the first switch 14 is in the first state, the duplex printing inlet 13 and the inlet of the reversing channel 2 are in the closed state, and the first switch 14 does not block the printing channel 1; when the first switch 14 is in the second state, the duplex printing inlet 13 and the inlet of the reversing channel 2 are in a communication state, and the first switch 14 can block the printing channel 1.
A second switch 15 is rotatably provided at the duplex printing outlet 12, the second switch 15 having two states. When the second switch 15 is in the first state, the duplex printing outlet 12 and the outlet of the reversing channel 2 are in the closed state, and the second switch 15 does not block the printing channel 1; when the second switch 15 is in the second state, the duplex printing outlet 12 and the outlet of the reversing passage 2 are in a communication state, and the second switch 15 can block the printing passage 1.
The third switch 16 is rotatably provided at the double-sided paper ejection inlet 11, and the third switch 16 has two states. When the third switch 16 is in the first state, the inlet of the paper ejection passage 3 and the double-sided paper ejection inlet 11 are in the closed state, and the third switch 16 does not block the printing passage 1; when the third switch 16 is in the second state, the inlet of the paper ejection passage 3 and the duplex paper ejection inlet 11 are in a communication state, and the third switch can block the printing passage 1.
In a preferred embodiment, the first switch may operate on the following principle: the first switch includes a first profile 141 and a second profile 142, as shown in fig. 2, when the first switch is rotated in a first state, the first switch can block the duplex printing inlet, and paper can pass through the first printing inlet along the first profile 141; as shown in fig. 4, when the first switch is rotated in the second state, the first switch can block the printing path, and the paper from the entrance of the printing path can enter the reversing path through the duplex printing entrance under the guiding action of the second profile 142. Similarly, the working principles of the second switch and the third switch are similar to those of the first switch, and are not repeated here.
In the single-sided printing state:
as shown in fig. 1, the first switch 14, the second switch 15, and the third switch 16 are all in the first state, and at this time, the paper moves directly from the inlet of the printing path 1 to the outlet of the printing path 1 through the printing path 1, so that the single-sided printing is completed.
In the duplex printing state:
the second switch 15 and the third switch 16 are both in the first state, and the sheet moves from the outlet of the printing passage 1 toward the outlet of the printing passage 1 along the printing passage 1;
as shown in fig. 3, when the sheet moves between the duplex printing outlet 12 and the duplex printing inlet 13, the first switch 14, the second switch 15, and the third switch 16 are all in the second state, at which time the sheet enters the reversing path 2 through the duplex printing inlet 13, then enters the printing path 1 from the duplex printing outlet 12 along the reversing path 2, then enters the duplex ejection path 3 from the duplex ejection inlet 11 along the printing path 1, finally enters the printing path 1 from the outlet of the ejection path 3 along the ejection path 3 and exits from the outlet of the printing path 1, and double-sided printing is completed.
It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and is for enabling those skilled in the art to understand the present invention and implement it accordingly, but the present invention is not limited to the above-described specific embodiments. All changes or modifications that come within the scope of the appended claims are intended to be embraced therein.
Claims (8)
1. The paper feeding mechanism for the double-sided printing function of the ink-jet printer is characterized by comprising a printing channel, a turnover channel and a paper returning channel which are arranged in the printer;
a spray head is arranged on one side of the printing channel; the printing device comprises a nozzle, a printing channel, a double-sided paper outlet, a double-sided printing inlet, a double-sided paper outlet and a double-sided printing inlet, wherein the printing channel is sequentially arranged from the inlet of the printing channel to the outlet of the printing channel;
the inlet of the turnover channel is connected with the double-sided printing inlet, the outlet of the turnover channel is connected with the double-sided printing outlet, a first switch is arranged at the double-sided printing inlet, and the first switch can control the on-off of the turnover channel and the double-sided printing inlet and control the on-off of the printing channel; the second switch is arranged at the double-sided printing outlet and can control the on-off of the turnover channel and the double-sided printing outlet and control the on-off of the printing channel;
an inlet of the paper returning channel is connected with the double-sided paper returning inlet, and an outlet of the paper returning channel is connected with an outlet of the printing channel; a third switch is arranged at the double-sided paper returning inlet and can control the on-off of the paper returning channel and the double-sided paper returning inlet and the on-off of the printing channel;
the printing channel, the overturning channel and the paper returning channel are provided with a plurality of pairs of paper feeding roller groups;
the paper feeding roller group on the printing channel can drive paper to enter from the inlet of the printing channel to the outlet of the printing channel;
the paper feeding roller groups on the turnover channel and the paper returning channel can drive paper to enter the paper returning channel through the printing channel from the inlet of the turnover channel to the outlet of the turnover channel; the paper feed roller group only needs to rotate towards one direction, and double-sided printing can be realized without changing the rotation direction;
on the printing channel, a paper feed roller group adjacent to the spray head at the upstream of the spray head is a first paper feed roller group, and a paper feed roller group adjacent to the spray head at the downstream of the spray head is a second paper feed roller group; the double-sided printing outlet is positioned between the spray head and the second paper feeding roller group, and the double-sided paper withdrawing inlet is positioned between the first paper feeding roller group and the spray head.
2. The paper feed mechanism for a duplex printing function of an inkjet printer according to claim 1, wherein the paper feed roller group includes a driving roller and a driven roller which are disposed opposite to each other, the driving roller and the driven roller are both rotatably installed in the printer, the driving roller is connected to an output shaft of a motor, the driving roller is rotatable by the motor, and the printing path, the reversing path, and the paper ejection path are all located between the driving roller and the driven roller, and paper can pass through an area between the driving roller and the driven roller.
3. The paper feed mechanism for the duplex printing function of an inkjet printer as claimed in claim 2, wherein:
the turnover channel comprises a first turnover paper channel, a second turnover paper channel and a third turnover paper channel, the first turnover paper channel is connected with the double-sided printing inlet, the third turnover paper channel is connected with the double-sided printing outlet, and the second turnover paper channel is used for connecting the first turnover paper channel and the third turnover paper channel;
the paper returning channel comprises a first paper returning channel, a second paper returning channel and a third paper returning channel, the first paper returning channel is connected with an outlet of the printing channel, the third paper returning channel is connected with the double-sided paper returning inlet, and the second paper returning channel is used for connecting the first paper returning channel and the third paper returning channel;
the paper feeding roller group on the first turnover paper path and the first paper returning path share one driving roller; the second reversing paper path and the paper feeding roller group on the path opposite to the second reversing paper path share one driving roller.
4. A sheet feeding mechanism for a duplex printing function of an ink jet printer according to any one of claims 1 to 3, wherein a negative pressure plate is provided on a side of the printing path opposite to the head, the negative pressure plate being capable of sucking a sheet of paper.
5. A paper feed mechanism for a duplex printing function of an ink jet printer according to any one of claims 1 to 3, wherein the flipping path is U-shaped.
6. A paper feed mechanism for a duplex printing function of an inkjet printer according to any one of claims 1 to 3, wherein the duplex printing inlet is rotatably provided with a first switch having two states:
when the first switch is in a first state, the double-sided printing inlet and the inlet of the turnover channel are in a closed state, and the first switch does not block the printing channel;
when the first switch is in the second state, the double-sided printing inlet and the inlet of the turnover channel are in a communication state, and the first switch can block the printing channel.
7. A paper feed mechanism for a duplex printing function of an inkjet printer according to any one of claims 1 to 3, wherein a second switch is rotatably provided at the duplex printing outlet, the second switch having two states:
when the second switch is in a first state, the double-sided printing outlet and the outlet of the turnover channel are in a closed state, and the second switch does not block the printing channel;
when the second switch is in a second state, the double-sided printing outlet and the outlet of the turnover channel are in a communication state, and the second switch can block the printing channel.
8. A paper feed mechanism for a duplex printing function of an inkjet printer according to any one of claims 1 to 3, wherein a third switch is rotatably provided at the duplex paper exit, the third switch having two states:
when the third switch is in a first state, the inlet of the paper returning channel and the double-sided paper returning inlet are in a closed state, and the third switch does not block the printing channel;
when the third switch is in the second state, the inlet of the paper ejecting passage and the double-sided paper ejecting inlet are in a communication state, and the third switch can block the printing passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630378.6A CN114407543B (en) | 2021-12-28 | 2021-12-28 | Paper feeding mechanism for double-sided printing function of ink-jet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630378.6A CN114407543B (en) | 2021-12-28 | 2021-12-28 | Paper feeding mechanism for double-sided printing function of ink-jet printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114407543A CN114407543A (en) | 2022-04-29 |
| CN114407543B true CN114407543B (en) | 2023-11-21 |
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| CN114872455B (en) * | 2022-06-01 | 2024-01-30 | 广州卓腾科技有限公司 | Certificate double-sided printing equipment |
| CN114851725B (en) * | 2022-06-02 | 2023-06-20 | 成都精机自动化技术有限公司 | Ink-jet type double-sided printing machine and printing method thereof |
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| CN114407543A (en) | 2022-04-29 |
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