JPH02291591A - Image copying machine - Google Patents

Abstract

PURPOSE:To accurately record another image in an area on a recording sheet by a thermal recording part by providing a control part which controls a fixation part so that the area where the image is formed is not processed thermally. CONSTITUTION:This machine is equipped with a transfer part 23 which transfers an image of a document to the recording sheet, the fixation part 29 which fixes the image on the recording sheet by heating the recording sheet where the image is transferred, a thermal recording part 30 which records another image on the recording sheet after the image fixation by heating, and the control part which controls the fixation part so that the area on the recording sheet where another image is formed is not heated. Therefore, the area on the recording sheet where another image is formed does not rise to high temperature and the thermal recording part 30 records another image on the recording sheet by heating. Consequently, the distance between the fixation part 29 and thermal recording part 30 need not be increased and the image recording by the thermal recording part 30 is performed excellently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image copying apparatus, and particularly to an image copying apparatus for copying another image in addition to an image of a document onto a recording sheet.

[Conventional technology]

Japanese Patent Application Laid-Open No. 59-77459 discloses an image copying apparatus for copying another image onto a recording sheet in addition to an image of a document. This device includes a transfer section for transferring an original image onto a recording sheet, a fixing section for heating and fixing the recording sheet to which the image has been transferred, and a heat-sensitive recording section for recording another image by heating. We are prepared.

In this image copying apparatus, first, an image of a document is transferred onto a recording sheet in a transfer section. Next, the image is fixed on the recording sheet by heating the recording sheet in the fixing section. Then, in the heat-sensitive recording section, various items such as copying date and time, distribution source and distribution destination are recorded on the recording sheet.

[Problem to be solved by the invention]

In the above-mentioned conventional configuration, the recording sheet is once fixed by heating the entire surface of the recording sheet in the fixing section, and then various information is recorded on the recording sheet in the heat-sensitive recording section. For this reason, a high-temperature recording sheet that has been heat-fixed is supplied to the heating recording section, and recording cannot be performed satisfactorily in the heat-sensitive recording section.

Therefore, a configuration may be considered in which the distance between the fixing section and the heat-sensitive recording section is increased. However, with ordinary image copying apparatuses, it is impossible to provide a sufficient distance due to space limitations.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image copying apparatus in which image recording by a heat-sensitive recording section can be performed satisfactorily without increasing the distance between the fixing section and the heat-sensitive recording section.

[Means to solve the problem]

The image copying apparatus according to the present invention is an apparatus for copying another image onto a recording sheet in addition to an image of a document.

This device includes a transfer section for transferring an image of a document onto a recording sheet, a fixing section for fixing the image on the recording sheet by heating the recording sheet to which the image has been transferred;
A heating recording section that records another image on the recording sheet on which the image has been fixed by heating, and a control section that controls the fixing section so that the heating process is not performed on the area on the recording sheet where another image is to be formed. We are prepared.

[Effect]

In the image copying apparatus according to the present invention, the image of the document is transferred to the recording sheet in the transfer section. Next, the recording sheet is heated in the fixing section, and the image is fixed on the recording sheet. At this time, the control section controls the fixing section so that the heat treatment is not performed on the area on the recording sheet where another image is to be formed. As a result, the area on the recording sheet where another image is formed will not become high temperature.

Next, in the heat-sensitive recording section, another image is recorded on the recording sheet by heating. At this time, since the heat treatment is not applied to the area on the recording sheet where another image is to be formed, the recording of another image by the heat-sensitive recording section is performed satisfactorily.

〔Example〕

FIG. 1 shows a copying machine employing an embodiment of the present invention.

In FIG. 1, a document table 12 is provided on the top surface of the copying machine main body 11.
is fixed, and a document holder 1 is mounted on the top of the document table 12.
3 is attached so that it can be opened and closed freely.

On the right side of the copying machine main body 11, there are paper feed cassettes 14 and 15.
is attached removably. A paper discharge tray 18 from which copied sheets are discharged is mounted on the left side of the copying machine main body 11 in the figure.

Inside the copying machine main body 11, an exposure device 19 for reading a document is provided on the upper side thereof. This exposure device 19 is composed of a light source, a mirror, and the like. Further, a photosensitive drum 20 on which an electrostatic latent image is formed is arranged in the center of the copying machine main body 11. Photosensitive drum 2
0, a charging device 2l that charges the photoreceptor drum 20 to a predetermined potential, a developing device 22 that develops the electrostatic latent image,
A transfer device 23 for transferring a toner image onto paper; a paper separation device 24 for separating the paper from the photoreceptor drum 20;
, and a cleaning device 25 for removing residual toner on the photoconductor drum 20. Paper cassette 14
．． 15 and an image forming section constituted by a photoreceptor drum 20 and the like, there is a paper feed conveyance path 27 for feeding paper.
is provided. In addition, the image forming section and the paper ejection tray 18
In order from the image forming unit side, there is a discharge conveyance path 28,
A fixing device 29, a thermal recording section 30, and a punch processing section 31 are arranged.

As shown in FIG. 2, the ejection conveyance path 28 includes a pair of rollers 32 arranged at intervals in the paper conveyance direction (X direction).
, 33, and a pair of belts 34, 35 stretched around both rollers 32, 33. Also, both belts 34.
A transport switch 36 that projects upward is provided between the transport switches 35 and 35 .

The fixing device 29 has a fixed lower housing 37 and an upper housing 39 that is rotatable around a support pin 38. Inside both housings 37 and 39 is a heat roller 4 with a heater 40 disposed therein, as shown in FIG.
1, and a pressure roller 42 disposed below the heat roller 41.
It has The pressure roller 42 is attached to the lower housing 37
is rotatably supported. Further, the heat roller 41 is rotatably supported by an upper inner housing 43 that is integrally provided within the upper housing 39. Therefore, when the upper housing 39 rotates, the heat roller 41 also moves up and down integrally.

Further, a guide plate 44 is arranged between the discharge conveyance path 28 and the rollers 41 and 42. In addition, both rollers 41,
On the downstream side of 42 (on the left side in FIG. 3), there are rollers 41,
A pair of peeling members 45 for peeling the paper from 42 and guiding it downstream, and a pair of rollers 46 for discharging the paper from inside the fixing device 29 to the outside are provided.

A plate-shaped cam follower 47 is provided at the downstream end of the upper housing 39 and projects downstream. Further, a coil spring 4B is provided at the downstream upper end of the upper housing 39.
is latched, and a coil spring 4 is attached to the main body (not shown).
The other end of 8 is fixed. As a result, the upper housing 39 is always elastically biased upward. As shown in FIG. 2, a pair of cams 49 are in contact with the cam follower 47. A rotating shaft 50 of the cam 49 extends in a direction perpendicular to the paper conveyance direction, and a clutch mechanism 51 is provided at one end thereof. As shown in FIG. 4, the clutch mechanism 51 includes a resist boss 52 fixed to one end of a rotating shaft 50, a coiled clutch resist spring 53 whose one end is locked to the resist boss 52, and a clutch resist spring 53. It has a cylindrical collar 54 to which the other end is locked, and a pulley 55 that fits into the clutch resist spring 53 from the inside. The drive side belt 56 (
Figure 2) is spanned. Further, a stopper 58 can be engaged with a pair of locking portions 57 formed at the outer peripheral end of the collar 54.

The locking portions 57 are located on opposite sides in the same diametrical direction at the outer peripheral portion of the collar 54 and protrude from the front and rear ends of the cylinder, respectively. Further, the stopper 58 is driven by a solenoid 59, and can be engaged with and disengaged from the locking portion 57.

As shown in FIG. 3, the thermal recording section 30 includes a paper guide plate 61, a pair of guide rollers 62 arranged on the upstream side of the guide plate 61, and a pair of guide rollers 62 arranged above the central part of the guide plate 61. It mainly has a magnetic pressure printing mechanism 63. The thermal printing mechanism 63 includes a printing thermal head 64 and a pair of reels 65 for supplying and collecting printing ink ribbons.
．． 66, and a platen roller 67 arranged below the printing thermal head 64. A cam follower is fixed to the upper end surface of the printing thermal head 64. The cam follower 68 extends upward, and its upper end is bent in a right angle direction. A cam 69 can come into contact with the bent portion of the cam follower 68. cam 69
is fixed to the rotating shaft 70. A clutch mechanism (not shown) similar to the clutch mechanism 51 is connected to the rotating shaft 70 . Further, a leaf spring 71 is arranged on the cam follower 68 on the lower side of the cam 69, and when the cam 69 rotates and is arranged on the lower side, the cam 69 is moved against the leaf spring 71.
It is designed to push downward.

The punch processing section 31 is provided with a punch rod 73 that is guided in the vertical direction by a guide member 72.

The batch rod 73 is driven up and down by a cam 74. The cam 74 is fixed to a rotating shaft 75 having a clutch mechanism (not shown) similar to the clutch mechanism 51 at one end. A guide plate 76 for guiding the paper is arranged below the punch rod 73. punch rod 7
3 and the platen roller 67, an ejection switch 77 is provided to detect the passage of paper. Also,
A pair of discharge ports 78 are provided on the downstream side of the guide plate 76 .

On the other hand, the copying machine has a control section 80 as shown in FIG. The control unit 8o includes a CPU8 LROM82,
It is equipped with a RAM 83 and an I/O boat 84 for external connection. Further, the CPU 81 is connected to a key input section 85, a transport switch 36, an ejection switch 77, and other input sections arranged on the top surface of the copying machine main body 11 via an I/O boat 84. Similarly, CPU8
1. Fixer? Solenoid 59 of li 29, solenoid of thermal printing mechanism 63 (not shown), punching section 31
A solenoid (not shown) and other outputs are connected.

Next, the operation of the above-mentioned copying machine will be explained according to the control flowcharts shown in FIGS. 6A to 6D.

In FIG. 6A, when a main switch (not shown) is turned on, initial settings such as setting the number of copies to 1 and heating the heater 40 are performed in step S1.

Also, at this time, a print flag and a punch flag, which will be described later, are set to the OFF state.

Next, in step S2, whether or not the print key has been pressed by the operator, in step S3, whether or not the print mode key has been pressed, in step S4, whether or not the punch mode key has been pressed, and in step S5, the key operator 85
It is determined whether or not any other key has been pressed. The program continues at step S until any key is pressed.
The judgments from step S5 are repeated from step S2. For example, if a key other than the print key, print mode key, and punch mode key is pressed, the program moves from step S5 to step S6. In step S6, processing is performed depending on the type of key pressed, and when the processing is completed, the process returns to step S2.

Next, if the print mode key is pressed, the process moves from step S3 to step S7. In step S7, it is determined whether the print flag is in the ON state. Print flag is ON
If not, the print flag is turned on in step S8. Further, if the printing flag is in the ON state in step S7, the printing flag is turned OFF in step S9. That is, each time the print mode key is pressed, the print flag is switched between the ON state and the OFF state.

If you press the punch mode key, the program will proceed to step S4.
Then, the process moves to step SIO. In step SIO,
It is determined whether the punch flag is in the ON state. If the punch flag is not in the ON state, the process moves to step Sll and the punch flag is set in the ON state. Also, step S
If the punch flag is in the ON state in step S10, the punch flag is set in the OFF state in step S12. That is, each time the punch mode key is pressed, the punch flag is switched between the ON state and the OFF state.

Next, assume that the operator presses the print key. In this case, the process moves from step S2 to step S13 in FIG. 6B. In step S13, the exposure device 19 and the photosensitive drum 20 are used to transfer the image of the document onto the paper supplied from the paper feed cassette 14.15. When the transfer operation is completed, the paper passes through the ejecting conveyance path 28 to the fixing device 29.
transported to the side. At this time, the transport switch 36 is pressed by the paper and turns on.

Next, in step 314, the transport switch 36 is turned OFF.
It is determined whether the F state has been reached. While the conveyance switch 36 is in the ON state, steps S14 to S1
5, and after setting the address number i to 1, the 6th D
The process moves to step 316 in the figure. In step 316,
Execute other common subroutines. Next, in step S17, the process returns to the step corresponding to address number l. In this case, address number i is 1, so
Returning to step S14 in FIG. 6B. That is, while the conveyance switch is in the ON state, step S16 in FIG.
While executing this, wait until the conveyance switch 36 turns OFF.

When the transport switch 36 is turned off, this means that the trailing edge of the sheet has passed the position of the transport switch 36. Next, in step 31B, it is determined whether or not the print mode is set. If not in print mode, step 3 in Figure 6C
Move to 19. Whether or not it is the print mode is determined according to the state of the print flag set based on the processing in steps 37 to S9. Step 318
If it is the print mode, the process moves to step S20. In step S20, the fixing opening/closing timer T,
and starts the printing up/down timer T. Next, in step S21, it is determined whether the fixing opening/closing timer T is time-amplifying. This fixing opening/closing timer T is a timer for timing the opening/closing of the fixing device 29. If the fixing opening/closing timer T, has not timed up, the address number i is set to 2 in step S22, and then the process moves to step S16 in FIG. 6D. After executing other subroutines in step 316, the process moves to step S17. In step S17, since the address number i is 2, the process moves to step S21 in FIG. 6B. In other words, the fixing opening/closing timer T3
Until the time-up of the fixing opening/closing timer T, other subroutines are executed while waiting for the time-up of the fixing opening/closing timer T.

If the fixing opening/closing timer T, times up, step 3
Move to 23. In step S23, the solenoid 59
By turning on the stopper 58, the locking state of the stopper 58 with respect to the locking portion 57 is released. Then, the clutch resist spring 53 is compressed, and the boley 55 and the rotating shaft 50 are brought into a connected state.

As a result, the cam 49 is rotated by the belt 56. Before the cam 49 rotates, the cam 49 is in a state in which the upper housing 39 is disposed on the lower side, as shown in FIG. 7A. When the cam 49 is rotated by the belt 56, the upper housing 39 is opened upward, as shown in FIG. 7B.

As a result, the heat roller 41 in FIG. 3 is placed on the upper side and separated from the pressure roller 42, so that the paper is no longer subjected to heat treatment. That is, when the solenoid 59 is turned on, the stopper 58 is placed on the collar 54 side, so the stopper 58 is disengaged from the locking portion 57 placed on the front side in FIG. 2, and is placed on the back side in FIG. The locking portion 57 is engaged with the locking portion 57.

As a result, the cam 49 is temporarily stopped in the upper position. That is, the non-fixing state shown in FIG. 7B is maintained.

The area that is not heated due to the movement of the heat roller 41 corresponds to area A of the transfer ring 90 shown in FIG. This area A is the area printed by the thermal recording section, as will be described later. Note that in FIG. 8, the X direction is the paper conveyance direction.

Next, in step S24, it is determined whether the print up/down timer T, has timed out.

If the print lift timer T has not timed up,
The process moves to step S25 and the address number i is set to 3. After executing other subroutines in step S16 of FIG. 6D, the process moves to step S17.

In step S17, since the address number i is 3,
The process moves to step S24 in FIG. 6B. That is, until the time of the print rise/fall timer T+ expires, the CPU 1 waits for the print rise/fall timer T1 to time up while executing other subroutines.

When the printing up/down timer T, times out, the process moves to step S26. In step S26, a solenoid (not shown) of the thermal printing mechanism 63 is turned on. This causes the cam 69 to rotate and push the temporary spring 71 downward. As a result,
The printing thermal head 64 moves downward and is placed at the position indicated by the two-dot chain line.

The cam 69 presses the leaf spring 71 downward, so that the print thermal head 64 is elastically pressed against the platen roller 67. Next, in step 327, an interval timer TIN is started. In step 328, it is determined whether the interval timer TIN has timed up. Interval timer TIN
If the time has not yet expired, the process moves to step S29, where the address number i is set to 4, and then the process moves to step 316 in FIG. 6D. If another subroutine is executed in step 316, the process moves to step S17. In step S17, address number i is set to 4, so the program moves to step 32B again. In step 328, the interval timer T
If IN times out, the process moves to step S30. In step S30, the printing thermal head 64 starts printing in area A of the transfer ring 90 in FIG. Next, in step S31 of FIG. 6C, it is determined whether printing has been completed. Until the end of printing, step S3
2, set the address number i to 5, and then set the address number i to 5.
The process moves to step S16 in figure D. After executing other subroutines in step S16, the process moves to step S17. In step S17, address number i is set to 5, so the program moves to step 331 again. That is, it waits for the end of printing while executing other subroutines. When printing is completed, the process moves to step S33.

In step S33, the solenoid 59 and the solenoid (not shown) of the thermal printing mechanism 63 are turned off. When the solenoid 59 is turned off, the stopper 58 is placed on the side away from the collar 54. As a result, one of the locking portions 57 is locked by the stopper 58, causing the clutch resist spring 53 to expand. As a result, the clutch mechanism 51 is in a disconnected state with the cam 49 disposed on the lower side. That is, the fixing device 29 stops in the state shown in FIG. 7A. Further, the thermal printing mechanism 63 stops with the printing thermal head 64 disposed above.

In step S34, the interval timer TIN
Start. Then, in step S35,
It is determined whether the interval timer T1,l has timed out. If the interval timer TIN has not timed up, the address number i is set to 6 in step S36, and then the process moves to step S16 in FIG. 6D to execute another subroutine. Then, the program moves to step 317, and since the address number i is 6, the program moves to step S35 again. If the interval timer TIN times up, the process moves to step 319.

In step S19, the discharge switch 77 is turned OFF.
Determine whether the condition has been reached. That is, it is determined whether the paper has completely passed the position of the ejection switch 77 or not. While the paper is passing, the process moves to step S37, the address number i is set to 7, and step S1 in FIG. 6D is performed.
Move to 6.

In step S16, other subroutines are executed, and the process moves to step S17. Since the address number i is set to 7 in step S17, the process returns to step S19. If the discharge switch 77 is turned off, the process moves to step 33B. In step 33B, a punch timer T and a discharge timer T11 are started. Then, the process moves to step S39. In step S39, it is determined whether the punch timer T, has timed up. If the punch timer T has not timed out yet, the process moves to step S40 and the address number i is set to 8. After executing other subroutines in step S16 of FIG. 6D, the process moves to step S17. Since the address number i is set to 8 in step S17, the process moves to step S39 in FIG. 6C. In other words, until the punch timer T times out, the punch timer T is executed while other subroutines are executed.
, wait for time up. If the punch timer TP times up, the process moves to step 341.

In step S41, it is determined whether the bunch mode is set. In this case, step S in FIG. 6A
Based on the processing from IO to step 312, it is determined whether the punch flag is in the ON state. If it is the punch mode, the process moves to step S42. In step 342, the punch rod 73 is driven up and down by rotating the cam 74 shown in FIG. 3 to form punch holes at predetermined positions on the paper. If the punching operation ends in step S42, or if the punching mode is not in step S41, the process moves to step S43. Step S4
In step 3, it is determined whether or not the discharge timer T}I has timed up. While the discharge timer T8 has not timed up, the process moves to step S44, where the address number i is set to 9, and the process moves to step S16 in FIG. 6D. In step S16, other subroutines are executed, and the process moves to step 317. In step 317, address number i is set to 9, so step 34 in FIG. 6C
Return to 3 again. That is, until the ejection timer TH times up, other subroutines are executed while waiting for the ejection timer TH to time up. When the discharge timer TH times up, the process returns from step S43 to step S2 in FIG. 6A.

As a result, the image of the document is transferred and fixed depending on whether or not the print mode and bunch mode are set, and if necessary, printing is performed by the print thermal head 64 in area A (Fig. 8), and punched at a predetermined position. A sheet of paper with punched holes formed by the processing section 31 is obtained.

〔Effect of the invention〕

According to the image copying apparatus according to the present invention, since the control section is provided to control the fixing section so that heat treatment is not performed in the area on the recording sheet where another image is to be formed, the heating by the fixing section is The heat treatment by the fixing unit is no longer performed on areas on the recording sheet where no image is required, and the heat-sensitive recording unit can accurately record another image on that area.

Further, according to the present invention, in order to perform accurate recording by the thermal recording section, there is no need to ensure a distance for heat radiation between the fixing device and the thermal recording section or to provide a special heat radiation mechanism. .

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view of an embodiment of the present invention, FIG. 2 is a schematic perspective view of the fixing device, FIG. 3 is a schematic vertical cross-sectional view of the fixing device and the vicinity of the thermal recording section, and FIG. FIG. 5 is an exploded perspective view of the clutch mechanism, FIG. 5 is a block configuration diagram of its control section, FIGS. 6A to 6D are its control flowchart, FIGS. 7A and 7B are side partial views showing its operating state, and FIG. The figure is a plan view of the paper. 19... Exposure device, 20... Photosensitive drum, 23...
...Transfer device, 29...Fixing device, 3o...Thermosensitive recording section, 80...Control section, 90...Transfer paper. Patent applicant Yukio Ono, agent of Mita Kogyo Co., Ltd., patent attorney

Claims (1)

[Claims] (1) An image copying device for copying another image onto a recording sheet in addition to an image on a document, the device comprising: a transfer section for transferring the image on the document onto the recording sheet; and a record to which the image has been transferred. a fixing section for fixing an image on the recording sheet by heating the sheet; a heat-sensitive recording section for recording the another image on the recording sheet on which the image has been fixed by heating; and a heat-sensitive recording section for recording the another image on the recording sheet by heating. An image copying apparatus comprising: a control section that controls the fixing section so as not to perform heat treatment on a region to be formed.