JPS6256236A - Copying machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus in which selection of automatic paper feeding and manual paper feeding can be automatically set from an operation unit.

[Conventional technology]

Conventionally, in this type of device, when selecting automatic paper feeding or manual paper feeding, the settings that can be made from the operation panel are limited to selecting a paper source from a paper cassette or paper deck that can automatically feed paper, etc. There is. Manual paper feeding was accomplished using only a mechanical lever or paper detection in the manual paper feeding section.

[Problem that the invention seeks to solve]

For this reason, even if the apparatus has multiple functions, copying by manual paper feeding is left to the operator, and continuous manual copying cannot be achieved, resulting in a significant decrease in operability.

The present invention has been made in order to solve the problems mentioned in section 2 above, and an object of the present invention is to provide a copying apparatus in which manual paper feeding can be automatically selected in the operation section.

[Means for solving problems]

A copying apparatus according to the present invention includes a paper feed section selection means for selecting a paper feed section for recording paper, a paper detection means for detecting the presence or absence of recording paper fed to a manual paper feed mechanism, and an output of the paper detection means. A selection control means is provided which allows the paper feed selection means to select manual paper feed according to the paper feed selection means.

[Effect]

In this invention, when the paper detection stage 1 detects fX and there is recording paper in the paper feed mechanism, the selection control means causes the paper feed selection means to select an f-fold paper feed.

〔Example〕

FIG. 1 is a sectional view of a copying apparatus according to an embodiment of the present invention. Reference numeral 1 denotes an original pressure plate, 2 represents an original table glass, and an original 3 is placed at a predetermined position. Reference numeral 4 denotes an irradiation lamp that exposes the original 3 placed on the original platen glass 2. 5a to 5d are A-
A scanning mirror scans the reflected light. 6 is an imaging lens, 7 is a photosensitive drum 1, and around it is a developing device 8. Transfer charger 99
Paper static eliminator 10. Cleaner section 11. A charger 12 and the like are provided. 13a and 13b are paper feed cassettes that hold recording paper 1.
4a and 14b are conveyed to the position of registration rollers 16 by driving of paper feed rollers 15a and 15b. A conveyor belt 17 is provided with a paper sensor 17a. A fixing roller 18 applies thermal pressure to the conveyed recording paper to fix the toner image. 79a and 19b are +J1 paper rollers, and the paper sensor 19c detects the conveyance state of the recording paper.

21 is the main body of the paper conveyance device, which feeds recording paper that is placed y, 1"I, and recording paper that is manually fed. 22 is a manual feed @,
622h is a sensor that is locked by the solenoid 22a.
Detects the opening/closing state f, ri. 23 has + in 1 paper feed section,
Manually fed recording paper and -V1 ejected reversed paper for refeeding are fed.

A transport roller 24 guides the ejected recording paper to the main body 21 of the paper transport device. Reference numeral 25 is a paper ejection roller, which is connected to the paper transport path 25a.
The recording paper conveyed through is discharged onto paper sheets 1, L, and -26. 25b is a paper sensor that detects the recording paper being discharged. Reference numeral 27 denotes a cutting material flange for controlling the direction of recording paper 11i to be fed and discharged. Reference numeral 28 denotes a discharge paper bus, in which recording paper to be discharged is driven by rollers 28a and 28b.
(628C conveyed to the 1st scrap paper section 23 is a paper discharge sensor,
The passing state of the recording paper through the discharge paper nox 28+ is detected. In addition, the reversing mechanism is the intervening paper bus 28. Rollers 28a, 28b
It consists of a hat. Reference numeral 29 denotes a partition plate that partitions the manually fed recording paper and the reversible paper 38a that has been fed. The partition plate 29 can be driven by a partition solenoid 29a, which will be described later. 30a
, 30b is a separation belt that refeeds the reverse paper 38a discharged to the paper refeeding section 23. Reference numerals 31a and 31b are paper refeed rollers, which are connected to a paper feed path 32 that intersects with the paper transport path 25a.
The reversed paper 38d (described later) is passed through the paper sensor 32.
Transport it to the installation position a. 33a and 33e are conveyance rollers that convey the reversal paper 38a to the position where the I/distroller 34 is disposed. Reference numerals 35a to 35c are paper sensors that detect the state of paper passing through the conveyance path -H. 36 is a conveyance motor, and each roller 25.28a, 28b.

31a, 31b, and 33a are driven. A separation solenoid 37 drives a separable wind 37a to prevent the recording paper from being caught between separation bells 30a and 30b. The splitting claw 37a is arranged between the axes of the separation belts 3a and 30b. Reference numeral 38 denotes manual recording paper, which is supported by a guide plate 39. In addition, the manual feed mechanism uses the guide plate 3.
9 and the partition plate 29.

FIG. 2 is an enlarged sectional view of the sheet refeeding section 230' shown in FIG. 1, and the same parts as in FIG. 1 are given the same reference numerals.

In this figure, the manually fed recording paper 38 that is present between the bottom plate 40i and the guide plate 39 is inserted. Reference numeral 41 is a paper sensor of the molded type, which serves as the paper detection means of the present invention, and detects the presence or absence of the hanging recording paper 38 to be sandwiched. Reference numeral 42 denotes a comb-shaped holding plate that holds the f-type recording paper 38. 43 If the convex portion is provided on the partition plate 29, ・r reliably pulls the inserted recording paper 38 from the separation belt 30b #L,,
Ensure that reversed paper is separated. Reference numeral 44 denotes a guide plate that guides the reverse paper 38a conveyed between it and the partition plate 29.

A paper sensor 45 detects the presence or absence of the reverse paper 38a. 4
A shaft 6 supports the partition plate 29 in a movable manner. Reference numeral 47 denotes a guide plate that securely guides the reversing paper 38a to the separating belts 30a, 3.
Guide to position 0b.

FIG. 3 is a side view of the protrusion of the paper conveying device 21 shown in FIG. 1. Components that are the same as those in FIGS.
are doing.

In this figure, reference numeral 39b denotes a notch formed in the guide plate 39, which is provided to ensure that the recording paper comes into contact with the separation bell 30b.

FIG. 4 is a plan view of the operation section for specifying the operation mode of the paper conveying device of the present invention, where 51 is the main body of the operation section, 52 is a sheet number display composed of, for example, 7 segments, and the + key 5
38, the number of copies set by the - key 53b is displayed. 54 is a clear/stop key, and the number display 52
The number of copies displayed is cleared and the image forming operation is stopped. , 55 is a copy key which instructs a control section, which will be described later, to start image formation. 56 is a mode changeover switch for selecting either one-sided copying or double-sided copying. The mode selection switch 56 switches cyclically, and when one-sided copying is selected, the one-sided copy indicator 56a lights up to indicate that one-sided copying has been selected, and when two-sided copying is selected, two-sided copying is selected. The double-sided copy indicator 56b lights up to indicate that the copy has been copied.

Reference numeral 57 denotes a paper selection switch constituting the paper feed section selection means of the present invention, and each time this paper selection switch 57 is pressed, an upper cassette paper feed indicator 57a and a lower cassette paper feed indicator 57b are activated.
The 1-manual paper feed indicator 57c lights up cyclically.

Each display includes, for example, an LED. Reference numeral 658 is a manual paper feeding prohibition indicator, which lights up when the second side is to be copied during double-sided copying, and the reversed paper 38a is re-fed from the paper re-feed unit 23.

After paper refeeding is completed, the manual paper feed prohibition indicator 58 turns off.

Reference numeral 59 denotes a document replacement indicator, which is provided to prompt the setting of the second side of the original during double-sided copying, and when the copying of the first side of the original is completed, the reversed paper 38a is conveyed to the paper refeeding section 23. The light is turned on, and the light is turned off when the setting of the second page document is completed and the copy key 55 is lowered.

FIG. 5 is a control block diagram of the paper conveying device and image forming section of the present invention. The main control section is composed of the same user as that shown in FIG. It has a selection control means 61a that allows manual paper feeding selection. 62 is an image forming interface, into which paper passing information from paper sensors 19c, 35b, and 17a is input. 63 is a paper ejection/refeeding interface, and paper sensors 35c, 41, 45, 22
b.

Depending on the paper passing output state of 28c, 25b, 32a, separation belts 30a, 30b, separable wind 37a
, partition plate 29. Solenoid 22a, switching flapper 27
．． Main motor 36. A drive command is sent from the main control section 61 to the solenoid 45b.

Next, the reversing operation of the recording paper will be explained with reference to FIG.

FIG. 6 is a flowchart illustrating the reversing operation when feeding paper from a cassette according to the present invention. In addition, (1) to (20)
indicates each step.

First, press the mode changeover switch 56 to turn on the double-sided copy indicator 56b and set the double-sided copy mode (
1). Next, press the paper selection switch 57 to turn on the upper cassette paper feed indicator 57a and select the paper feed cassette 13.
Select paper feed from a (2). Next, in order to prohibit manual paper feeding, the manual feed cover 22 is locked by activating the solenoid 22111 (3), and the manual feed prohibition indicator 58 is turned on (4). Next, drive the conveyance roller 36 (5)
, conveyance roller 24, paper ejection roller 25. Refeed roller 31
b. Drive the conveyance roller 33b and the roller 28b (6). Next, it is determined whether the manual feed duplex mode is being set (7), and if YES, the partition solenoid 45a is turned on.
FF and move to step (19) 8), If NO, operate the partition solenoid 45a (8), and the partition plate 29
moves to position 29b, brings the manual recording paper 38 into contact with the guide plate 40, and moves the manual recording paper 38 away from the paper feeding position. Reversal by copying becomes possible.

Next, the solenoid 22a is turned on (10) to prohibit manual paper feeding. Next, a drive command for turning on the transport motor 36 and the switching flapper 27 is sent from the main control unit 61 through the paper discharge/refeed interface 63 (11).

Next, the separation belt 30a is turned ON and the separation solenoid 37 is turned OFF =1-control unit 61
Then, the paper is sent out via the waste paper/recandy paper interface 63 (12). Next, turn on the intermediate solenoid 45b and turn off the component force bell 30b.
The control unit 61 sends out the 1A paper/+i paper feed interface 63 (13). In this state, the electrophotographic method
(Next, the paper sensor 19c detects whether or not the reverse paper 38a on which the image has been formed on the first side has caused a paper jam (14).The reverse paper 38a that has passed the paper sensor 19c is detected by the paper sensor 19c.
+) The direction is bent in one direction by the flapper 27, and the direction is 1.
The paper passes through the paper path 28 and is transported to and stored in the paper refeeding section 23 by the drive of rollers 28a and 28b (15). Next, it is determined whether or not the set number of sheets has been reversed (16). If NO, the process returns to step (14); if YES, the document replacement indicator 59 lights up (17).
, waits for the next copy key 55 (I8).

On the other hand, if the judgment of step (7) is that the double-sided mode is set, then
5b to 0N-i. Together with I [(Kattonre/Ido 45
a is ON L (19), when the separation mode 1/noid 37 is in the emotion I7 state, the operating position of the separation function claw 37a is " The stand tank of 38a is used, and the middle position 29a is the IIII J plate 29.
is moved, and the control is terminated (20).

Next, referring to FIG. 7, the paper feeding and 1) operation of the forceps will be explained.

FIG. 7 is a flowchart 1 for explaining paper refeeding according to the present invention and the initial appearance of 11 sheets. In addition, (31) ~
・(47) indicates each step.

First, it is determined whether or not the +4 plane mode is in progress (31). If this judgment is YES, turn OFF J solenoid 45a (32),
If NO, turn on the partition solenoid 45a.
: Both (33), transport motor 369 minutes 1. - Drive the 7-noid 37 (34) and lower the separable claw 37a to the position shown by the broken line. Next, it is determined whether or not the reversed paper 38a exists at the arrangement and position of the paper sensor 35I4 (35). If the determination is YES, step (43) is performed.
), and if NO, proceed to the paper sensor 17a.

It is determined whether recording paper exists at the placement positions 19c, 28c, and 25b (3G). With this judgment, Y
In the case of ES, it is determined whether the reverse paper 38a has passed through the paper sensor 4j 17a or not. (37), N
If the answer is O, the process proceeds to step (43), and if the answer is YES or if the judgment in step (36) is No, the separation belt 30a is removed.

30b (38), the reversing paper 38a in the paper refeeding section 23 is turned into molecular tsW paper, and the paper sensor 32a detects the reversing paper 3.
It is determined whether the passage of 8a is detected (39). If this judgment is No, it is determined whether or not a paper jam has occurred (40); if YES, the paper jam is displayed and paper removal is waited for (41); if it is NO, the process returns to step (38).

On the other hand, if the determination in step (39) is YES, the dividing belts 30a, 30b are turned off (42). Next, it is determined whether a paper jam has occurred using the paper sensors 25b, 35b, and 28c (43). If this judgment is YES, display the paper jam and remove the paper.
), in the case of No, it is determined whether the currently set mode of z is double 1m copy and copying to the first side is in progress (45). If this judgment is NO, the initial flapper 27 is turned ON (413), and if YES, the OFF++ flapper 27 is turned ON to control the conveyance direction (47). After completing this step (47), control of the sensor is started.

Then, the paper refeeding roller 31b and the conveyance rail 33a are driven to convey the reverse paper 38a to the position where the registration rollers 34 are arranged. First, re-feed n (tl) where the re-fed reversing paper 38a passes the paper sensor 35b and the next reversing paper 38a is passed through the paper sensor 35b.
At the time point c is reached, the first reversal paper 38a is completely fixed;
The paper is currently passing between the paper sensors 19c and 25b. Then, the second reverse paper 38a is transferred, hl, and the rear end of the first reverse paper 38a passes the paper sensor 25b.

At this time, one of the intersecting conveyance paths 25 a , , , l
It is confirmed by the paper sensor 25b that there is no recording paper at -, and the third reversal paper 38a is fed from the paper refeeding section 23.

Next, a double-sided copying operation using manual paper feeding will be explained with reference to FIG.

FIG. 8 is a flowchart 1 for explaining the double-sided copying operation during manual copying according to the present invention. Furthermore, (51)
~(68) shows each step.

Turn off the renoid 22a (51), open the manual feed cover 22, and set the manual feed recording paper in the paper refeed section 23. Next, it is determined whether the sensor 22b is turned on to determine whether the manual feed cover 22 is in an open state (52
). If this judgment is YES, the intermediate solenoid 45b
(53). Next, it is determined whether or not the paper sensor 41 has detected the manually fed recording paper 38 (54).
If so, manual paper feed indicator 57. Blink c and step (
Return to step 51) (55), and if YES, set manual feed mode 56) and return to step (55).

On the other hand, if the determination in step (52) is NO, it is determined whether the paper selection switch 57 has been pressed (57).
, if YES, reset manual feed mode (5 days).

Next, it is determined whether the upper cassette paper feed indicator 57a is lit by the paper selection switch 57 (58).

If this judgment is YES, the lower cassette paper feed indicator 57
b lights up, and the upper cassette paper feed indicator 57
The aQ is turned off (60), the copy key 55 is waited for, and the image forming operation is executed (61).

On the other hand, if the determination in step (59) is No, it is determined whether the lower cassette paper feed indicator 57b is lit (62). If this determination is YES, it is further determined whether the paper sensor 41 is in the ON state or not.
3) If NO, proceed to step (65); if YES, both the upper cassette paper feed indicator 57a and the lower cassette paper feed indicator 57b are turned off and the manual paper feed indicator 5 is turned off.
7c and returns to step (60) (64).

On the other hand, if the determination in step (62) is No, the manual paper feed indicator 57C9 and the lower cassette paper feed indicator 57b are also turned off, the upper cassette paper feed indicator 57a is turned on, and the process returns to step (61). 65).

On the other hand, if the determination in step (57) is No, it is determined whether the set mode is manual feed mode or not (86).
, if No, return to step (81); if YES,
Furthermore, it is determined whether the paper sensor 41 is in the ON state (67), and if No, the manual feed mode is reset and the process returns to step (65) (68), and if YES, step (67) is determined.
Return to 64).

In this way, paper can be selected cyclically from the two-tier cassette, the lower middle cassette to the manual upper middle cassette. However, it functions when the recording papers 14a and 14b are present in the paper feed cassettes 13a and 13b, and the manually fed recording paper 38 is present in the paper refeeding section 23.

FIGS. 9(a) to 9(f) are state diagrams illustrating paper feeding/discharging operations during manual double-sided copying according to the present invention, and the same parts as in FIG. 2 are given the same reference numerals.

FIG. 5A shows a state in which the manual recording paper 38 is set, and the separable wind 37a is in the OFF state. Same figure (
b) shows the paper feeding preparation state, and the switching flapper 27 is in the ON state. Figure (C) shows the paper feeding/discharging status, and the arrow ■
The paper is fed in the direction of the arrow H, and the paper is ejected in the direction of the arrow H.

FIG. 4(d) shows the moving state of the manually fed recording paper 38, and the separable air 37a is in the OFF state. FIG. 4(e) shows a paper refeeding preparation state, in which the partition plate 29 has been moved to the intermediate position 29a. Figure (f) shows the paper refeeding/paper ejection state, where the reverse paper 38 is refed for double-sided copying.
A is conveyed in the direction of the arrow (■), and at the same time, the manual recording paper 38 on which double-sided copying has been completed is conveyed in the direction of the arrow (■).

For manual double-sided copying, select double-sided copying using the mode changeover switch 56 from the operation section. Next, the same figure (a)
When the copy key 55 is pressed with a plurality of sheets of manual recording paper 38 set in the paper refeeding section 23 as shown in FIG.
Move to a and prepare for paper feeding. At this time, the main control unit 6
The switching flapper 27 is turned on in response to the command No. 1. Subsequently, as shown in FIG. 2C, after the image formation is completed, the reversed paper 38a that is discharged to the paper discharge conveyance path 25a is conveyed to the intersecting paper discharge path 28a and fed to the paper refeeding unit 23 at 11v. , tolerate.

At this time, manual feeding 17 recording paper 38 and parallel feeding 1. Then, the reverse paper 38a is discharged.

Next, as shown in the same figure (d), the minute 11111T function
7d moves and the remaining f recording paper 38 is separated by a bell)
30a and 30b, the flapper 27 is moved to 0FFL, and preparations are made to refeed the reversal paper 38a from the refeed section 23 as shown in FIG. 3(e). Next, the separable wind 37a is turned on, and the separating belt 3
By driving 0a and 30b, the manual recording paper 38 to be re-fed for double-sided copying is conveyed in the direction of the arrow ■, and the f-loading recording paper 38, which has completed double-sided copying, is transported in the direction of the arrow ■.
direction, and the paper is conveyed to the paper ejection tray 2 via the paper ejection roller 25.
Discharge at 6.

Note that for double-sided copying using cassette paper feeding, after the recording paper that has been copied on one side is stored in the paper re-feeding unit 23,
As shown in FIG. 9(d), the separable wind 37a moves and separates the remaining manual recording paper 38 (a bell) 30a. 3
At the same time, the switching flapper 27 is turned off to prepare for refeeding of the reversed paper 38a from the refeeding section 23, as shown in FIG. 3(e). Next, turn on the separating claw 37a, and release the separating belts 30a, 30b.
As a result, the sheet and insert recording paper 38 to be re-fed for double-sided copying are transported in the direction of the arrow ■, and the "difference 17 recording paper 38, which has completed double-sided copying, is transported in the direction of the arrow ■" and ejected. The paper is ejected to the paper ejection tray 26 via the paper r-gawler 25.

Also, for single-sided copying, the manual recording paper 38 can be similarly fed from the paper refeeding section 23.

〔Effect of the invention〕

As described above, the present invention includes a paper feed section selection means for selecting a paper feed section for recording paper, a paper detection means for detecting the presence or absence of recording paper fed to a manual paper feed mechanism, and Since a selection control means is provided that allows paper feed selection by one stage of paper feed selection in accordance with the output of the paper detection means, manual paper feed can be automatically set using the same operation as the automatic paper feed setting operation from the operation panel. , which has the excellent advantage of greatly improving the operability of manual paper feeding.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a copying machine showing an embodiment of the present invention;
Figure 2 is an enlarged sectional view of the main parts of the paper refeeding section shown in Figure 1;
The figure is a cross-sectional view of the main parts of the copying apparatus shown in FIG. 1, FIG. 4 is a cross-sectional view of the operating section for specifying the operation mode of the paper conveyance device of the present invention, and FIG. 5 is a cross-sectional view of the paper conveyance device of the present invention FIG. 6 is a control block diagram of the image forming section, and FIG.
9 is a flowchart explaining the paper refeeding and paper ejection operations according to the present invention, FIG. 8 is a flowchart explaining the double-sided copying operation during manual copying according to the present invention, and FIG.
FIGS. 8A to 7F are state diagrams illustrating paper feeding/discharging operations during manual double-sided copying according to the present invention. In the figure, 21 is the main body of the paper conveying device, 22 is the manual feed cover, 2
2a is a solenoid, 22b is a sensor, 23 is a paper refeeding unit,
24 is a conveyance roller, 25 is a paper discharge roller, 25a is a paper discharge conveyance path, 25b is a paper sensor, 26 is a paper discharge i-ray, 27 is a paper discharge paper bus, 28 is a paper discharge paper bus, 28a, 2
8b is a roller, 28C is a paper discharge sensor, 29 is a partition plate, 2
9a is an isolation solenoid, and 30a and 30b are separation belts. 31δ, 31b is a re-ship paper port, 32 is a paper feed bus,
32a is a paper sensor, 33a to 33e are conveyance rollers, 34
is an L-distro roller, 36 is a conveyance roller, 37 is a separation solenoid, 37a is a claw that can be separated, 38 is a manual feed recording paper,
39.44.47 is a guide plate, 40 is a bottom plate, 41 is a paper sensor, 42 is a holding plate, 43 is a convex portion, 45 is a paper sensor, 4
6 is a shaft, 52 is a sheet number display, 53a is a + key, 53b is a 1 key, 55 is a copy key, 56 is a mode switch, 57 is a paper selection switch, 57a is an 11th cassette paper feed indicator, 57b is the lower cassette paper feed indicator, 57c
5 is the manual paper feed indicator, 58 is the page feed prohibition indicator, 5
9 is a document exchange display, 61 is a main control unit, 61a is a selection control means, 62 is an image forming interface, and 63 is a paper ejection/discharging unit.
This is the paper refeed interface.

Claims (1)

[Claims] In a copying apparatus that has a reversing mechanism and a manual paper feed mechanism that are provided to intersect with a paper ejection transport path, a paper feed section selection means that selects a paper feed section for recording paper, and a paper feed section that feeds the recording paper to the manual paper feed mechanism. A copying apparatus comprising: a paper detection means for detecting the presence or absence of printed recording paper; and a selection control means for allowing the paper feed selection means to select a manual feed according to the output of the paper detection means. .