JPS62116967A - Recording device - Google Patents

Abstract

PURPOSE:To sharply record and reproduce the boundary part between an image part and a no-image part by synchronizing the control timing of an illumination body which erases a latent image on a photosensitive body with positions which are irrelevant to the image in the breadthwise direction of the photosensitive body. CONSTITUTION:A switching circuit 84 is driven when LEDs of an LED array 14 begin to turn on and off to carry out intense lighting in which the quantity of light emission of the LEDs is increased. The LEDs of the array 14 which is put in dynamic illuminating operation are turned on by turning on five digit DGT signals driven by a transistor (TR) 81 in order on the start of illumination in synchronism with intense illumination time while the five DGT signals are regarded as one unit so as to eliminate a shift in illumination position, and the circuit 84 receives a signal in synchronizing with the serial DGT signal generation time from a control part at this time to perform switching to the intense illumination. Consequently, the boundary part between the image part and no-image part is discharged electrostatically and sufficiently, so that a sharp image is recorded and reproduced.

Description

[Detailed description of the invention] [Technical field] Is this invention a record? This invention relates to a latent image erasing lamp located at C position.

[Prior Art] An erasing LED for erasing a latent image illuminates a non-image area on a photoreceptor to prevent toner from getting on it. In recent years, recording devices with the function of masking or trimming a desired area of an image have been proposed, but in order to reduce costs, the LED for erasing is replaced with the LED for masking and trimming.
It also serves as ED. Since the number of LEDs is large, a dynamic lighting method is used. However, the dynamic lighting method has a drawback in that the boundary between the non-image area and the image area may become unsightly.

[Objective] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to record and reproduce clearly the boundary portion between an image portion and a non-image portion.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Overall explanation> FIG. 1 is a schematic diagram of a copying machine according to the present invention.

In the figure, the main configuration and various sensor placements are shown in 5l-324. In the figure, 1 is the main body of the copying machine, 2 is an image forming section centered on the photosensitive drum 18, and 7.8 stores toners of different colors (for example, red and black). The developing device selectively contacts the drum 18 among the two colors. 3 is transfer paper SH
A cassette 9 that is removably attached to the main body at a paper feeding section for feeding paper into the machine, their paper feeding rollers 10 and 11, and a sensor S9.
~12,322.23. Reference numeral 4 denotes an optical system including a lens system that exposes and scans the original and forms an image on the photosensitive drum 20.

It is driven by an optical motor 19 in the direction of the arrow.

25 is a fixing device, and 23 is a second@paper section which will be described later.

40 is an intermediate tray.

Figure 2 is a control block diagram, lOl is the main switch,
DCP is a DC power supply that supplies power to the control unit 60, etc., and S is the sensors shown in FIG.

100 is an operation unit, 61.62 is a control unit for controlling the AC load, and a lamp 24. AC load of heaters 21 and 22, 63
is a motor control section that controls the main motor 18 and the optical motor 19, and HVT is a high voltage generator that controls the chargers 13, 15 .
16 and developing device 7.8. 66 is a load such as a solenoid, a clutch, a fan, etc.; 67 is a document processing device; 68 is a sorter; 70 is a coordinate reading device (editor); and 80 is a buzzer.

Next, the operation will be explained.

When the power switch 101 is turned on, first, the heaters 21 and 22 in the fixing device 25 generate heat.

Wait until the fixing roller reaches a predetermined temperature that allows fixing (wait state). When the fixing roller reaches a predetermined temperature, the main drive motor is energized for a certain period of time, and the photosensitive drum 18. Drives the fixing device 25, etc.

The rollers in the fixing device 25 are made to have a uniform temperature (weight release rotation). Thereafter, the main motor 18 is stopped and the copying is possible (standby state). Here, the main motor 18 includes a photosensitive drum 20, a fixing device 25, . It drives the developing device 7.8 and various transfer paper conveyance rollers. Then, when a copy command is input from the operation unit 100, a copy operation starts.

(1) Explanation of image formation The main motor 18 rotates in response to a copy command, and the photosensitive drum 20 starts rotating in the direction of the arrow. At the same time, high voltage is supplied to the primary charger 13 from the high voltage supply device HVT and is uniformly applied on the photosensitive drum 20. zero-order exposure lamp 24 that provides a charge of
is turned on, the optical motor 19 is driven, and the original placed on the original platen 5 is exposed and scanned in the direction of the arrow, and the photosensitive drum 20 .
Project to f:. An electrostatic latent image is thus formed on the photosensitive drum 20. Next, this latent image is developed by the developing device 7 or 8, and transferred to the transfer paper SH by the transfer charger 15. It is separated from the photosensitive drum 20 at a portion. Next, the residual toner remaining on the photosensitive drum 20 is collected by the cleaner 6, and after the static electricity is uniformly removed by the erase lamp 28, the copy cycle is repeated again. At this time, the blank exposure lamp 14 (
(LED array) to erase unnecessary charges outside the image area. Further, as will be described later, the LED array 14 is configured by arranging a large number of LEDs, and can erase any location in the image. First developer8. The second developing device 7 is the operating section 1
In this embodiment, the first developing device 8 is filled with black toner and becomes the black developing device 8, and the second developing device 7 is filled with color toner. A color developing device 7 is used. Pressurization (abutment) of these developing units to the drum 20 and release thereof are performed by a black developing unit release solenoid 31 and a color developer pressurizing solenoid 30. The black developer release solenoid 31 is solenoid O.
The black developer 8 is released from the drum by N, and the color developer pressurizing solenoid 30 is turned on to pressurize the color developer 7 to the drum. Also, each developing unit 7.8 includes a black toner sensor S16. A color toner sensor S17 is arranged.

Further, a developing bias voltage is applied to the developing rollers 7-a and 8-a of each developing device from a high voltage generator HVT.

The conditions for this bias voltage are changed depending on when the black developer 8 and the color developer 7 are used in order to optimize the developing conditions for black toner and color toner. In addition, the photosensitive drum
Sensitivity may change as the durability progresses or changes in the environment occur, but in order to cope with this, the sensitivity can be changed by commands on the operation panel 100 (described later).

In addition, the copying machine of this embodiment can perform not only normal one-sided copying but also double-sided copying and multiple copying (described later), but the resistance of the transfer paper once passed through the fixing device is different from that of the first side copying. To cope with this, the conditions of the high voltage applied to the transfer charger 159 and the separation charger 16 are made different between the first side and both sides or the second side during multiple copying. These developing biases or high voltage values for one transfer separation are determined by commands from the control section 60.

The optical system 4 is reciprocally controlled by rotating the optical motor 18 forward and reverse via the motor control section 63 in accordance with commands from the control section 60 .

Sl is an optical home position sensor and is stopped at this position during standby. S2 is an image tip sensor corresponding to the leading edge position of the original image.

Used for copy sequence control timing. S
3 is the limiter position (reversal position) at the time of maximum scanning.The optical system 4 reciprocates with a scanning length according to the cassette size and copying magnification based on a command from the control section 60.

(2) Control of transfer paper 39. Each Sll is
upper and lower paper sensors, 510;

312 are upper and lower glue lid position detection sensors, respectively;
322 and 323 are upper and lower cassette size detection sensors, respectively.

Hereinafter, since the upper and lower stages perform similar operations, the paper feeding operation for the upper stage will be explained. First, when the cassette 9 is inserted, the size detection sensor S22 reads the size and identifies the size of the cassette 9.
Turn off the paper out indicator, select the cassette size, and turn it on. Next, when a copying operation is started in response to a copy command, a middle plate raising clutch (not shown) is used to raise the middle plate in the ONu cassette 9, thereby raising the transfer paper SH. Transfer paper SH
rises, contacts the paper feed roller lO, reaches a predetermined height, the tray lid detection sensor S10 outputs an output, and the clutch is turned off.
At the same time, the paper feed roller 10 is driven to feed the transfer paper into the machine (described later).As mentioned above, the transfer paper in the cassette is raised by the middle plate lifting clutch, and after that, the raised position is maintained and the primary The above rising operation is not performed at the time of copy start. Furthermore, when the number of transfer sheets in the cassette decreases during continuous copying and the top surface of the transfer sheet SH falls below a predetermined position, the clutch is similarly raised to ONL and a predetermined height.

The transfer paper fed into the machine reaches the pre-registration sensor S7, and since the registration roller 12 is stopped, it makes an appropriate loop and then stops to align the leading edge of the image formed on the drum 20. , by a timing signal from the optical system 4.

The registration rollers 12 are driven to align the leading edges and then send the transfer paper to the transfer section 17. In the transfer section 17 , the image on the drum 20 is transferred to the transfer paper by the transfer charger 15 , and then separated from the drum 20 by the separation charger 16 and sent to the fixing device 25 by the paper transport section 17 . In the fixing device 25.

The surface of the fixing roller is controlled to a predetermined temperature by a temperature sensor (not shown) placed on the surface of the fixing roller and a heater 21, and the image is fixed on the transfer paper, and then the paper discharge sensor S
4, the paper is detected to be discharged, and the paper is discharged to the outside of the machine by rollers 26 and 27.

Next, manual copying will be explained.

When the manual tray 28 is moved in the direction of the arrow in the figure, the handshake tray detection sensor 324 enters the ONL manual copy mode. At this time, the middle plate of the cassette 9 set in the upper stage is automatically released from the raised position, and the transfer paper SH in the cassette is lowered.

Next, place the transfer paper on the manual feed tray 28, and in response to the copy start command on the operation unit 100, the manual feed lid clutch is driven in the same way as when feeding cassette paper, and the transfer paper set on the manual feed tray 28 is driven. Raise the paper feed roller 1 after raising it.
0 to feed into the aircraft.

Next, in the case of multiple copying, the flapper 29 is switched to the position shown by the dotted line by the operation of a solenoid (not shown), and paper is fed and transferred.

The separated and fixed transfer paper passes through a path 33 and is sent to the second paper feed section 23. In the second paper feeding section 23, after the paper is detected by the second pre-registration sensor S5, the transfer paper edge detection sensor S
S, lateral positioning is performed using a lateral registration sensor S8 and a lateral registration alignment screw/id (described later).

Next, in response to a multiple copy command from the operating section, the second registration roller 37 sends out the image again to the registration roller 12 section. Thereafter, the paper is ejected to the paper ejection tray 32 in the same manner as described above.

Furthermore, during double-sided copying, the transfer sheet is ejected halfway through by the ejection roller 27 in the same manner as in the normal copying operation described above, but after the trailing edge of the transfer sheet passes the flapper 29, the ejection roller 27 is driven in the reverse direction. , the transfer paper is guided by the flapper 29 and introduced into the path 33 (described later).

This reverse drive is performed by a solenoid that controls forward and reverse rotation. The subsequent operations are the same as in the case of multiple copying described above. In this way, in the case of double-sided copying, the ejection roller 27
The transfer paper is then taken out of the machine, turned over by the reverse rotation of the roller 27, and sent to the second feeding section.

Although multiple copying of a single sheet and double-sided copying have been described above, in the case of multiple copying of a plurality of sheets or double-sided copying, the intermediate tray 40 is used. As shown in Figure 1.

The intermediate tray 40 is provided with a paper conveyance path 59, 43 and a tray 53 for temporarily storing transfer paper in an intermediate state. In the case of multiple copying of multiple sheets, the fused transfer paper is partially ejected by the paper ejection roller 27 under the same control as the double-sided copying of the above-mentioned one-sheet copying, and then the paper ejection roller 2
7 is driven in the reverse direction, it passes through the path 33.43 and is stored in the tray 53. After repeating this operation and storing all of the first side in the tray 53, the next copy command causes the second side to be stored in the tray 53.
The paper feed roller 56 is driven via path 59.23.

The second side copy is executed. On the other hand, in the case of multiple double-sided copies, the flapper 29 passes from the fixing device 25 through the paths 33 and 43 and is stored in the tray 53 under the same control as the above-mentioned one-copy double-sided copy. Since it is the same as in the case, it is omitted.

(3) Explanation of the operation section Next, the operation panel lOO will be explained.

FIG. 3 is an external view of the operation panel 100.

In the figure, 101 is a power switch that controls power supply to the copying machine;
102 is a key for commanding the operation of the sorter;

Reference numeral 103 is a copy image mode selection key for selecting a case where a specified area is to be copied in six types of modes (image conversion modes). 104 is a point key (described later) for specifying points (two points in the x direction, two points in the Y direction) when specifying an area.

105 is a multiple key for selecting multiple mode.

106 is a quick copy key for specifying continuous copying, which divides the copy area of the original glass 5 into left and right halves and automatically makes two copies;
107 is a double-sided key for selecting the duplex copying mode; 108 is a key for specifying the creation of a binding margin or border erasure at one end of the copy paper; 109 is a zoom key for specifying the magnification in arbitrary magnification steps, for example, in 1% increments; and 110 is the standard reduction magnification. 111 is a key for selecting the same size copy.

113 is a key for selecting a cassette; 114 is a key for adjusting the copy density; 115 is a density correction key for changing the copy density specified by the copy density adjustment key 114; )
This is performed by controlling the lighting voltage of the original exposure lamp 24 and by changing the developing bias using the copy density correction key 115.

116 is a clear/stop key, which operates as a copy stop key while a copy operation is being executed.

117 is a copy key, 118 is a preheat key.

Reference numeral 119 is a key for returning to the standard mode, and reference numeral 120 is a color selection key, which is used to switch the developing device 7.8. Reference numeral 121 inputs the length of the original and the desired length after copying, and the asterisk key is used to select the magnification. Reference numeral 122 inputs the number of copies using the numeric keypad. Reference numeral 123 is an AE key for specifying automatic density adjustment mode, and reference numeral 124 is a key for specifying automatic paper selection mode for selecting the optimum transfer paper according to the original size and copying magnification.

125 is a key for specifying the automatic magnification selection mode that selects the optimum magnification according to the original size and the specified transfer paper size, 126 is a key for calling up the magnification and ratio set in memory, and 127 is a key for registering the magnification in memory. 128 is a key for specifying an area to be registered when specifying an area or for calling up a registered area (described later), and 131 to 1
64 is an LED display.

131 is the display when using a sorter, sort mode,
LED to indicate group mode.

132 to 137 are LEDs that display the copy mode executed by combining the designated area with the color developer;
3 to sequentially select the LHDs 132 to 137. These copy modes will be described later. Reference numeral 138 indicates a specified area, and in this embodiment, three types of areas can be specified. 139 is an LED for displaying a dimension part to be registered when specifying an area; 140 to 142 are LEDs for displaying a copy mode regarding multiple copies; 140 is a multiple mode display for sequentially multiple copies each copy; 1
41 is a quick copy multiple mode display which divides the copying area on the original glass 5 into left and right halves and automatically makes multiple copies in the color specified by the developer selection key 120; 142 divides the copying area on the original glass into left and right halves. Divide it and automatically develop it into two! !
In this embodiment, the left half of the original copy area is copied in black using the black developer 8, and the right half is first copied in color using the color developer. 7 to make multiple color copies.

143 is a page quick copy display that divides the original copy area into left and right halves and obtains two copies with one copy command;
145 to 147 are LEDs for displaying the copy mode for double-sided copying, and 145 is for copying each sheet sequentially to both sides. Double-sided mode display, 14
6 is a continuous duplex mode display that divides the copying area on the original glass 5 into left and right halves, and automatically copies both sides of the area in the color specified by the developer selection key 120; 147 uses RDF to double-sidedly copy a double-sided original; This is a double-sided display for copying. 148 is a mode display for shifting the original image relative to the transfer paper to create a binding margin; 149 is a white border mode display for erasing the edges of the transfer paper; 15
0 indicates no toner, no control counter, and a warning display indicating a jam; 151 indicates the location of the jam.
ED.

152 is an LED that lights up when the magnification is calculated using the asterisk key 121; 153 is an LED that lights up when the magnification display 154 is displaying the magnification; 155 is an LED that displays the specified standard magnification mode; It is specified. 156 is an LED that displays what kind of cassette is used for copying, and 157 is an LED that displays the installed cassette. A4 at the bottom
is installed and the lower row is selected, 157 is A3. A4 lights up.

156, the LED next to A4 lights up.

158 is a LEo indicating which one is selected among manual feed, upper tray, and lower tray, and 159 is an LED that lights up when there is no paper in the cassette or when the cassette is not installed.
, 160 is a copy number display LED, 161 is an LEo indicating automatic density adjustment mode, 162 is a density display LED, 16
3 is a standby display LED that lights green when copying is possible and red when copying is not possible.

164 is an LED that displays the color of the specified developing device;
5 is a display indicating automatic paper selection mode.

166 is an LED indicating automatic magnification selection mode. Note that the toner empty indicator 150-1 is the developer switch key 120.
Displays whether there is toner in the specified developing device. That is, when there is no black toner, the light is turned on only when the black developer 8 is selected, and is off when the color developer 7 is selected. Conversely, the same applies when there is no color toner.

<Explanation of LED array> Next, the LED array will be explained.

FIG. 4-1 is a diagram showing the LED array 14 and the drive circuit, and 60 in the figure is the aforementioned control section.

81 is five PNP transistors.

82 is connected to 7 nodes of each LED respectively, and 82 is connected to 24 N nodes.
A PN transistor is connected to each LED cand as shown in the figure.

83 is a transistor. The LED array consists of 124 LEDs 1 to 124.
The LEDs are arranged in a line over the entire axial direction of the drum 20. Further, the length of the light emitting portion of these LED arrays is set to be longer than the maximum width of the transfer paper. In this embodiment, two LEDs at both ends of the LED array 14,
2. The LEDs 123 and 124 are set at a portion longer than the pile of transfer paper. Each LED is driven by four LEDs 1 and 2 at both ends of the LED array.

123 and 124 are driven statically by transistor 83, and the remaining LEDs 3 to 122 are driven by transistor 83.
1.82 4J 5 x 24 (7) Lighted by matrix dynamic drive.

The LED array 14 is an LED to be lit by the control unit 60.
The timing is controlled and used for removing unnecessary charges on the drum 20 and erasing an image when copying a designated area.

Furthermore, 84 in FIG. 1 is a circuit for switching the power supply voltage to the transistor 81. FIG. 4-2 is an enlarged view of the LED array 14 and photosensitive drum 20. LED array 1
The LED in 4 illuminates the area between A and 8 on the drum 20. on the other hand,! Ram 20 is rotating in the direction of arrow C. Considering the above-mentioned copy mode with area specification, drum 2
When erasing the area after point A on 0, the timing signal from the control unit 60 aligns the position to point A and the LED starts to light up. In other words, the LEDs shown in Figure 4-2 are at point A and point B.
The LED lights up when the dot is located. At this time, the product (energy) of the light received on the drum surface at points A and B and time
is small at point A and increases toward point B. After point B, the LED continues to light up, so the conditions are the same. For this reason, the charge cannot be removed sufficiently at the boundary between the portion of the image to be erased and the image portion, and the boundary becomes unclear. Conversely, when the LED changes from being lit to being turned off, the image becomes unclear as well. In order to prevent this, the switching circuit 84 is driven at the time when the LED starts to light up and at the time when it goes out, so that the normally used voltage +v
The voltage is switched to +v2, which is higher than l, and the amount of light emitted by the LED is increased (strong lighting).

Furthermore, although this LED array is dynamically lit as described above, five digit signals (hereinafter referred to as DG
It is synchronized with the above-mentioned strong lighting time using one unit (referred to as T signal). For example, in FIG. 4-3, before time To, the DGT signal of all transistors 81 is OFF, and the LED is turned off at time 0 T.

When the lighting starts, five DGT signals become 0NLLE in sequence.
Turn on D. At this time, the switching circuit 84 receives a series of DGT signal generation time signals from the control section 60 and switches to strong lighting. This strong lighting time is an integral multiple of T, but L
It is appropriately determined by the spread of light from the ED array 14 and the rotation speed of the photosensitive drum.

Explanation of the editor I> Next, the editor will be explained. The editor 70 is mounted on the original pressure plate 34, and its configuration is shown in FIG.

The editor 70 includes one planar resistor for reading the positions in the horizontal direction (X direction) and the vertical direction (Y direction), a pen with a built-in switch (not shown) that presses the surface of the editor 70 when inputting coordinates, and It consists of a switching circuit 90 that switches between the X direction and the Y direction when reading coordinates. The document is placed within the dotted line in the figure with the reference position aligned with the arrow position. The above-mentioned planar resistor is used not only in the area indicated by the dotted line where the original is placed, but also in the clear key 92. Memory key 91° Area copy mode key 93~
It also covers part 98. Here, the area copy mode keys 93 to 98 are the mode display 1 on the copy panel described above.
32 to 137. The clear key 92 is a key for clearing the specified area and clearing the area copy mode, and the memory key 91 is a key for registering the specified area. When you enter certain coordinates with a pen, 9 is sent to the relay.
Since 01 remains OFF, a voltage is applied between Yl and YO, which is equivalent to that shown in Fig. 5-3, and the control unit 60 reads the coordinate in the Y direction as a voltage obtained by dividing the power supply voltage with DG-Y, and the primary The control unit 60 connects the relays 901 to ONL, , Xl-
Two voltages are applied between the XO and the coordinates in the X direction are read in the same manner as shown in FIG. 5-2. Based on the read coordinate data, the area coordinates are set and the key force is also determined.

Determine the signal from the editor and register the copy mode and area specification coordinates. Also, when specifying copy mode, press the buzzer at 60m5, and when inputting area coordinates, press the buzzer at 3.
It is set to 0m5. This is to remind the user of the editor input. The buzzer does not sound if the user's input to the editor is not valid.

The area for inputting coordinates of the editor area is 432x29
7mm, but considering the error of the editor, the maximum or minimum value was set to 5mm inside the area. That is, when specifying a point within 5 mm from the inside of the editor area, it is considered that a point 0 mm from the inside of the editor area has been specified.

Description of copy mode> Next, details of the copy mode will be described.

Mode 1. Single-sided original - double-sided copy (LED 145 lights up) As shown in FIG. 6(a), a double-sided copy is obtained from two originals.

In other words, set original A on the original table and press the copy key 117.
Press to form an image on one side of the transfer paper, then set the B original on the document table, press the copy key 117, and form an image on the opposite side of the transfer paper.

Mode 2. Continuous page copying → double-sided copy (LED 146 lights up) As shown in FIG. 6(b), double-sided copies are obtained from sides A and B of the double-page document.

In other words, set the two-page spread document on the document table, and press the copy key 1.
When 17 is pressed, the A side is imaged on one side of the transfer paper, and then the B side is imaged on the opposite side of the transfer paper.

Mode 3. Single-sided original → multiple copy (LED l 40 lights up) As shown in FIG. 6(C), multiple copies are obtained from two originals.

In other words, set original A on the original table and press the copy key 117.
is pressed to form an image on one side of the transfer paper, and then the B original is set on the original platen, and the copy key 117 is pressed to form an image on one side of the A original on which the image was formed.

Mode 4. Page continuous shooting multiplex (LED l 41 lights up) As shown in FIG. 6(d), A of the double-page spread document.

Obtain multiple copies from side B. That is, when a two-page spread document is set on the document table and the copy key 117 is pressed, an image is formed on side A on one side of the transfer paper.

Subsequently, an image is formed on the B side on the same side of the transfer paper.

Mode 5. Continuous page color multiplex copy (LED14)
2 lights up) As shown in FIG. 6Ce), side A of a two-page spread document is copied in black and side B is copied in color to obtain a color multiplex copy.

This is a mode in which the B side is a color copy during page snapshot multiplexing. Also, side A may be a color copy.

Mode 6: Color the specified area.

Mode in which the color outside the area is made black (LED 132 lights up) As shown in FIG. 6(a), this mode is obtained by copying the white color of the designated area in color and copying the color outside the area in black. When you set the original, specify the area, and press the copy key, the area within the area will be imaged in black on the transfer paper. Next, a color image is formed on the transfer paper outside the area. Alternatively, copying may be performed from outside the area first.

Mode 7: A mode in which the color within the specified area is black and the color outside the area is color.

(LED l 33 lights up) As shown in FIG. 7(b), the area is obtained by copying the color within the specified area to black and copying the color outside the area to color. This is the reverse mode of mode 6.

Mode 8. A mode in which the color within the specified area is colored (the LED 134 is lit), as shown in FIG. 7(C), the color within the specified area is copied in color. When a document is set, an area is designated, and the coffee key 117 is pressed, an image is formed in color on the transfer paper within the area.

Mode 9. A mode that colors the area outside the specified area. (LED 135 lights up) As shown in FIG. 7(d), the color outside the designated area is color-copied. When a document is set, an area is specified, and a copy key 117 is pressed, an image is formed in color on the transfer paper in the area outside the area.

Mode 10. A mode that changes the color within the specified area to black. (LED 136 lights up) As shown in FIG. 7(e), the color within the designated area is copied to black. When the original is set, an area is specified, and the copy key 117 is pressed, an image is formed in black on the transfer paper within the area.

Mode l 1. A mode that changes the color outside the specified area to black. (LED 137 lights up) As shown in FIG. 7(f), the color outside the designated area is copied to black. When a document is set, an area is specified, and the copy key 117 is pressed, an image is formed on the transfer paper in black on the portion outside the area.

Due to the mechanism of the copying machine, there are only two paper paths, so modes 1 to 7 above and single copy are used.

Only one of page continuous copying, double-sided continuous copying, double-sided original-double-sided copying can be selected.

Only one of the modes 6 to 11 can be selected because selecting two or more will result in inconsistent images. Also, 8
~11 modes and binding margin key 148/frame erase key 149
For the reasons mentioned above, you can only choose one.

When mode 5 to 11 is selected, color selection key 120
becomes invalid. This is because modes 5 to 11 also specify the color mode for copying.

Next, a case will be described in which a document feeding device (DF, ADF, RDF) is used when mode 1 or mode 3 is selected.

(1) When using DF, when an original is set on the DF original feed tray, the original is automatically fed and set at a predetermined position on the original tray of the main body. Then, the copying operation for the first side is started, copying is performed under the set copying conditions, the transfer paper is stored in the intermediate tray 40 or the second paper feeding section 23, and the copying operation for the first side is completed. The DF then ejects the original.

Next, in the same manner as described above, when the original is set on the hill of the DF's original feeding table and the original is automatically fed, the main body starts the copying operation for the second side. This transfer paper is fed from the first
Intermediate tray 40 in which face copies have been completed and stored.
Alternatively, the second paper feeding unit 23 is used. When the copying operation for the second side is completed, the DF discharges the original. Then, the series of copy operations is completed.

Also, set the original manually for the first side, and set the original in D for the second side.
Alternatively, the document may be set using the DF for the first side and manually for the second side.

(2) When using ADF Place the original on the ADF's original feed tray.

When the copy key 117 is pressed, the original is automatically fed and ejected. When the first side of the document is completely fed, if there is no second side of the document, the transfer paper is ejected from the machine and the copying operation is completed. However, when there is only one original, depending on the copy setting conditions, the intermediate tray 40 or the second paper feed section 2'3
The transfer paper is stored in the holder, and the copying operation for the first side is completed. Then, when the copy key 117 is pressed again, the copying operation for the second side is started. At this time.

The original may be set manually or an ADF may be used.

(3) When the copy key 117 is pressed during RDF, the RDF counts the number of originals by circulating the originals set on the original feed table. Then, if there is an odd number of sheets, the last original is made a one-sided copy.

Next, paper size regulations when 'modes 1 to 5 are selected will be described.

When making multiple ψ double-sided copies, the second
There are cases where the paper feed section 23 and the intermediate tray 40 cannot be used. If the size of the transfer paper makes it impossible to use the second paper feed section 23 and the intermediate tray 40, it is ejected from the machine and the copying operation is completed.

(1) When there is no intermediate tray 40 In the case of mode 1 and mode 3, the number of copies that can be set is l'' because originals must be replaced.

(2) When using the intermediate tray 40 In the case of mode 1 and mode 3, since originals must be replaced, the number of copies that can be set is limited to the number of sheets that can be loaded on the intermediate tray. However, when the paper size is unusable in the intermediate tray 40 and the paper size is usable in the second paper feed section 23, the number of possible copies is "ii+". Further, when feeding transfer paper from the single manual feed tray, the intermediate tray 40 cannot be used because transfer paper of different sizes may be stacked.

Mode 1. When the intermediate tray 40 is used in a multiplex/double-sided copy mode other than mode 3, the number of copies that can be set is up to the number of sheets that can be loaded on the intermediate tray.

Explanation of jam processing> Next, jam processing will be explained.

If a jam occurs in a copy mode that does not use the intermediate tray 40 or the second paper feed section 23, clear the jam, press the reset button 515 (shown in the first diagram), and turn on the power switch 101 to resume copying. It becomes possible. Then, the copy mode returns to the one before the jam occurred. However, the number of completed copies is subtracted from the set number of copies and the remaining number of copies is displayed on the copy number display section 160. If the copy key 117 is pressed here, the remaining copy number is copied and the copying operation is completed.

If a jam occurs on the first side of the copy mode using the intermediate tray 40 or the second paper feed section 23, clear the jam, press the reset button in S15, and turn on the power switch to return to a copy-ready state. Become. At this time, the copy mode is the same as when the intermediate tray 40 or the second paper feed section 23 is not used. If you press the copy key 117 here, the remaining number of copies will be copied, and the first copy will be copied.
Complete the face copy operation. In double-sided/multiple copy modes other than mode 1.3, the second side copying operation is then performed. If the user presses the stop key 116 or the reset key 119 in the copy ready state after clearing the jam, the user determines that he or she wants to cancel the copying of the first side, and copies the number of sheets of transfer paper in the intermediate tray 40. The number of copies is displayed on the display unit 160, and the state is set to wait for the copying operation of the second side.

If a jam occurs on the second side of the copy mode using the intermediate tray 40 or the second paper feed section 23, clear the jam, press the reset button 515, and turn on the power switch lot to return to a copy-ready state. Become. At this time, the copy mode before the jam occurs is restored. However, the number of transfer sheets in the intermediate tray 40 is displayed on the copy number display section 160. If you press the copy key 117 here, the copying operation will be performed until there is no more transfer paper in the intermediate tray 40. If there is no transfer paper in the intermediate tray 40 when the copy is ready after the jam has been cleared, the copying operation will be completed. .

Note that when a jam occurs, even if the power switch is turned off, the data before the jam occurs is retained as a backup. Further, even if the front door (not shown) is opened, the power supply to high voltage and the like is cut off.

Explanation of tonerless processing> Next, processing without toner will be explained.

(1) In the case of black toner, copying is not permitted in copy modes 5, 6, 7, 10, and 11.

Even if no black toner is detected during copying, the toner out display 1 will be displayed until the set number of copies is completed.
50-1 is not displayed.

Also, when copying using RDF, multiply the number of remaining original sheets by the desired number of copies, and if the value is less than 100, the copying operation will be interrupted even if no black toner is detected during copying. Complete copying up to the last original. Furthermore, if the calculation result is 100 or more, the lack of toner may affect the image, so the copying operation is interrupted when the lack of black toner is detected.

(2) When there is no color toner, copying is not permitted in copy modes 5, 6, 7, and 8.9.

During a copy operation, if the color toner runs out, the copy operation is interrupted at that point. This is because if the copying operation continues, the mixture ratio of toner and carrier becomes abnormal, and the carrier of the color developing device adheres to the drum, causing adverse effects such as scratches on the drum. However, when the transfer paper is stored in the second paper feed section 23, it is the single copy mode, and the amount of color toner consumed is small, so the copying operation of the series is completed.

When copying using RDF, the value calculated by counting the number of remaining original sheets is multiplied by the value of the set number of copies, and if the value is less than a predetermined value, the copying operation is interrupted even if no color toner is detected during copying. Without.

Complete copying up to the last manuscript. After detecting the absence of color toner while copying the second side of double-sided/multiple copying, the user turns off the power 101 and replenishes color toner. At that time, the transfer paper stored in the intermediate tray 40 or the second paper feed section 23 may be removed and copying may be interrupted. Therefore, if there is no transfer paper in the intermediate tray 40 or the second paper feed section 23 when the power switch LOT is turned on, it is impossible to continue the copying operation, so the copying operation goes into a standby state.

The above toner-free state processing will be explained in more detail.

8 and 9 are flowcharts regarding display and copy control in the case of no toner, and FIG. 8 shows processing in a standby state.

First, let me explain this.

To judge what color the developer is specified by the developer selection key 120 described above (301-1), in the case of black copying, select 3.
The presence or absence of toner in the developing device selected in step 02-1 is checked using a toner detection signal from a sensor (not shown);
If there is no toner, the no toner LED 150-1 lights up (
301-3), and prohibits the start of black copy and the start of two-color copy (301-4). That is, 1
No input from the copy start key 117 is accepted. If there is black toner, the out-of-toner LED 150-1 is turned off (301-6), and the copy start prohibition for two-color copying and black copying is canceled (301-7). Note that detection of the presence or absence of toner is performed using a well-known method. In addition, even if the toner is detected, it does not mean that the toner has completely run out; in fact, in the case of a color copy in which the 0 color developer is selected, in which the toner is detected with some margin, the color developer selected is the same as in the case of a black copy. If there is no color toner, LED150-1
301-9), prohibit color copying and two-color copying (301-1O), and cancel these if there is toner (301-12.13). in copy mode 5, 6.7.

This mode uses the black and color developing devices alternately to obtain two-color copies.・Explains what happens when toner runs out during the next copy.

A flowchart is shown in FIG. 9, and the processing in this flowchart is checked every time one copy is executed. First, in step 302-1, it is determined whether the copy being executed is a black copy or a color copy. In the case of black copying, if no black toner is detected (302-2), the set number of copies being executed is calculated (302-3), and this calculated value uses the circulating document feeder (RDF). If not, this calculated value will be the number of copies set using the numeric keypad 122 in the operation section 100. If the number of originals set before copying is known in advance, such as when using RDF, the operation section 100 numeric keypad 12
The number is the product of the number of copies set in step 2 and the number of originals.

It is determined whether the calculated total number of copies is 100 or more (302-4), and if it is 100 or more, a command is set to interrupt copying midway (302-5).In the case of color copying, toner is present. If it is detected that there is no toner, it is determined in 302-7 whether or not the mode is multiple duplex or multiple copy mode using an intermediate tray. is 3
A copy interruption command is set in 02-5. In addition, in a mode in which the intermediate tray is not used, and in cases other than the first side of double-sided or multiple copying (302-8→302-5), a copy interruption command is similarly set. Also, if it is the first page, it will be executed without interruption. For example, if the toner runs out in multiple single-sided copy mode using a one-color developer, 302-1→
It passes through 302-6 → 302-7 → 302-8 → 302-5, and sets a command to interrupt copying midway.

In addition, in one or more embodiments, when copying using a color developer, copying was immediately interrupted due to the lack of color toner, but if the set number of copies to be copied is relatively small (about 3 to 5 copies), the set number of copies should be changed. It can also be configured to complete the copy. Further, when copying a specified area using a color developing device, when the specified area is small, the amount of toner consumed per copy is small, so the number of copies that can be made can be further increased.

FIG. 10 is a flowchart showing an example of this.
Connected to A in the figure. Determine the presence or absence of color toner during copying (303-1);) If toner is present, clear the color copy counter (303-2); here, the color copy counter counts the number of copies made without toner This is a counter for If the toner runs out,
Add 1 to this color copy counter (303-3)
, if the mode is other than mead, which copies only the designated area, it is determined in 303-7 whether the copy counter is 5 or more.

If it is less than 5, continue copying, if it is 5 or more, 303
-9 sets the copy interrupt command and interrupts copying midway. In addition, in the area copy mode, the ratio of the specified area to the whole is calculated (303-5), and the ratio is 303-5).
If it is over 0%, perform the same process as the normal mode above, and set 30%.
% or less, at 303-8, and when the copy counter becomes 15 or more, a copy interruption command is issued at 303-9.

Further, in FIG. 8, copy start is prohibited when there is no toner, but it is easy to configure such that copy start is enabled when the number of sheets is less than a predetermined number.

Note that the copy area ratio can be calculated from the size of the selected copy paper, the copy magnification, and the coordinates of the designated area.

In this way, by combining with the set developer indicator 164, the toner-free indicator 150-1 can be used for seven colors of black.

Also, if the toner runs out while copying.

By distinguishing whether to continue copying or to stop copying according to the developing device copy mode being used at the time, two developing devices can be compactly implemented without impairing copy operability.

The above toner-free state processing will be explained in more detail.

8 and 9 are flowcharts regarding display and copy control in the case of no toner, and FIG. 8 shows processing in a standby state.

First, let me explain this.

To judge what color the developer is specified by the developer selection key 120 described above (301-1), in the case of black copying, select 3.
The presence or absence of toner in the developing device selected in step 02-1 is checked using a toner detection signal from a sensor (not shown);
If there is no toner, the no toner LED 150-1 lights up (
3ot-3), and prohibits the start of black copying and the start of two-color copying (301-4). That is, input from the copy start key 117 is not accepted. In addition, if there is black toner, the no-toner LED 150-1 is turned off (301-6), and the copy start prohibition for two-color copying and black copying is canceled (301-7). Note that detection of the presence or absence of toner is performed using a well-known method. In addition, even if the toner is detected, it does not mean that the toner has completely run out; in fact, in the case of a color copy in which the 0 color developer is selected, in which the toner is detected with some margin, the color developer selected is the same as in the case of a black copy. If there is no color toner, LED150-1
301-9).

Color copying and two-color copying are prohibited (301-10).

Also, if there is toner, release these (301-1
2.13). Among these, two-color copying is a mode in which the black and color developing devices are used alternately in copy modes 5 and 6.7 described above to obtain two-color copies.

A case where the toner runs out during the next copy will be explained.

A flowchart is shown in FIG. 9, and the processing in this flowchart is checked every time one copy is executed. First, in step 302-1, it is determined whether the copy being executed is a black copy or a color copy. In the case of black copying, if no black toner is detected (302-2), the set number of copies being executed is calculated (302-3). If the circulating document feeder (RDF) is not used, this calculated value will be the number of copies set with the numeric keypad 122 in the operation unit 100, and the calculated value will be the number of copies set with the numeric keypad 122 in the operation unit 100. If the number of set originals is known in advance, it will be the number of copies set using the numeric keypad 122 of the operation unit 100 multiplied by the number of originals.

It is determined whether the calculated total number of copies is 100 or more (302-4), and if it is 100 or more, a command to interrupt the copying is set (302-5), and if it is a color copy, toner is present. 303-6 determines whether
If no toner is detected, it is determined in 302-7 whether the mode is multiple duplex or multiple copy mode using an intermediate tray, and if the mode is multiple duplex or multiple copy mode, a copy interruption command is set in 302-5. do. Also, in a mode that does not use an intermediate tray, it is possible to make double-sided or multiple copies.
In cases other than face value (302-8→302-5), a copy interruption command is similarly set. Also, if it is the first page, it will be executed without interruption. For example, if you run out of toner in multiple single-sided copy mode using a one-color developer, 302-
1→302-6→302-7→302-8→302-5
and sets a command to interrupt copying midway through.

In addition, in one or more embodiments, when copying using a color developer, copying is immediately interrupted due to lack of color toner, but when the number of copies set is relatively small (3 to 5
It can also be configured to complete copying of a set number of sheets. Further, when copying a specified area using a color developing device, when the specified area is small, the amount of toner consumed per copy is small, so the number of copies that can be made can be further increased.

FIG. 10 is a flowchart showing an example of this.
Connected to A in the figure. It is determined whether or not color toner is present during copying (303-1), and if toner is present, the color copy counter is cleared (303-2).Here, the color copy counter counts the number of copies made without toner. is the counter. When the toner runs out, add 1 to this color copy counter to 303-
3) If the method is other than Mead, which copies only the designated area, it is determined in 303-7 whether the copy counter is 5 or more.

If it is less than 5, continue copying, if it is 5 or more, 303-
At step 9, a copy interrupt command is set to interrupt copying midway. In addition, in the area copy mode, the ratio of the specified area to the whole is calculated (303-5), and the ratio is 30
% or more, perform the same processing as the normal mode above, and reduce the value to 30%.
Even below, when the copy counter becomes 15 or more in 303-8, a copy interruption command is issued in 303-9.

Further, in FIG. 8, copy start is prohibited when there is no toner, but it is easy to configure such that copy start is enabled when the number of sheets is less than a predetermined number.

The copy area ratio described above can be calculated from the size of the selected copy paper, the copy magnification, and the coordinates of the designated area.

In this way, by combining with the set developer indicator 164, the toner-free indicator 150-1 can be used for both black and color.

Also, if the toner runs out while copying.

By distinguishing whether to continue copying or to stop copying according to the developing device copy mode being used at the time, two developing devices can be compactly implemented without impairing copy operability.

Description of Editor II> FIG. 16 is a flowchart regarding processing of input values from the editor.

To determine whether the input data is area coordinates, S te
p4-2), if the area coordinates, the buzzer is 30m5ec.
Sound (Step 4-3).

Then, the input data from the editor is corrected to obtain a better image (Step 4-4), and the correction value is stored in the RAM (Step 4-5).

5 steps to determine whether the input data is key human coordinates
4-1) If it is a key manual coordinate, sound the buzzer for 60m5ec (Step 4-6).

Then, the copy mode is set and canceled based on the input data (Step 4-7).

Next, the details of Steps 4-3 to 4-7 (7) will be described. FIG. 17 is a Step 4-3 (F) 70-chart. First, turn on the buzzer 5step 4-3
-1) Sound the buzzer, and keep it in that state for 30m5ec (Step 4-3-2), then turn off the buzzer for 5 seconds.
step4-3-3) Stop the buzzer.

FIG. 18 is a S te P4-7 (7) 70- chart. First, turn on the buzzer in 5 steps 4-7-
1) Sound the buzzer, and in that state for 60m5ec (
Step 4-7-2), and turn off the buzzer to stop the buzzer (Step 4-7-3). 5As shown in Steps 4-3 and 4-7, depending on the difference in copy mode input and area coordinate input, the buzzer can be turned off. The ringing times are different. This is to make the user reconfirm the input mode and reduce erroneous operations. In addition, as another example,
Instead of sounding a buzzer, it is also possible to make a difference between the two blinking times of an LED or the like.

FIG. 19 is a 70-chart showing details of 5tep4-4. Here, the length of the area coordinate range of the editor in the X direction is fLx, and the length in the Y direction is iy. First, it is determined whether the input data X in the X direction is within 5 mm from the end of the area (Step 4-4-1), and if it is within 5 mm, the input data X is set to 0 (Step 4-4-2).
). It is determined whether the input data Y is within 5 mm from the edge (Step 4-4-3).

If it is within 5mm, set input data Y to O (S t
e p4-4-4). Input data X is lx-5mm
If it is above (Step 4-4-5), set the input data
Set input data Y to iy (Step 4-4-8
), this is to prevent an extra image from being formed on the edge of the copy paper due to an error when specifying the edge of the editor area when specifying the masking/trimming area.

Further, as another embodiment, when the document size can be detected (for example, a plurality of document detection sensors are provided under the document platen glass, and the document size is detected by a combination of their outputs.

), the length lx in the X direction and the length y in the Y direction are set to the document size. When this is implemented, in the above implementation method, 5tep4-4-6゜5tep4-
Since the correction 4-8 was performed uniformly regardless of the document size, it was not effective for documents smaller than Jlx and Jly.

However, if the original size can be detected, the corrections in steps 4-4-6.5 and 4-4-8 can be made according to the original size, and image formation in masking and trimming will be better than in the above embodiments.

The data corrected in step 5step 4-4 is stored in the RAM. By using the trimming/masking image forming method described below, masking/trimming of a plurality of areas that are separated from each other or that overlap is possible.

FIG. 20 is a flowchart showing that area coordinates, color mode, and multiple mode can be input from the editor.

If the input data is the area copy mode key 93 (Figure 5-1) (Step 4-7-1).

The above-mentioned mode 6 copy mode is selected (Step
4-7-11).

If the input data is the area copy mode key 94 (S t
e p 4-7-2), the copy mode of mode 5 described above is selected (Step 4-7-10).

If the input data is the area copy mode key 95 (Step
4-7-3), the aforementioned mode 4 copy mode is selected (Step 4-7-9).

If the input data is the area copy mode key 96 (Ste
p4-7-4), the above-mentioned copy mode 3 is selected (Step 4-7-19).

If the input data is the area copy mode key 97 (Step
4-7-5), the above-mentioned copy mode 2 is selected (Step 4-7-18).

If the input data is area copy mode' key 98 (S t
e p4-7-6), the above-mentioned copy mode 1 is selected (Step 4-7-17).

If the input data is the memory key 91 (Step 4-7-7), the area of the registered area is O.
If the area size is O, set the copy prohibition flag (Step 4-7-14).
e p4-7-16).

Furthermore, if the area area is not O, area registration is performed (4-7-15). The area can be easily calculated from the coordinates of two points in the specified area.

If the input data is the clear key 92 (Step 4-7-
8), Determine whether any of the mode keys 91.93 to 98 above is selected. 5step 4-7-12),
When selected, the selected mode is cleared using keys 91, 93-98.

With the above, you can specify the area from the editor,
Color mode and multiplex mode can be selected.

You can also add a double-sided mode to the editor.

In FIG. 21, the area of the registration area is O.

12 is a flowchart in which no copy operation is performed. A copy operation start flag is set by turning on the copy key 117 or the like. It is determined whether the copy operation start flag is set or not (step 12-1). If it is set, it is determined whether the copy prohibition flag is set or not (step 12-2). If it is set, the copy operation is started. Prohibit start. If the copy prohibition flag is not set, the copy operation is started (Step 12-3).
).

This prohibits copying when an invalid area is registered. because.

When invalid area registration is executed due to user error,
This is to inform the user.

Also, if you want to change the editor's manual correction value, you can do so by following the steps below. first.

(Press the asterisk key 121, press the numeric key 1)
Press the field of 22, press the asterisk key 121,)
By pressing the 4 key, the editor input correction value change mode is entered.

Subsequently, by pressing the (2) key (press (3) on the numeric keypad 122 and press the asterisk key 121), the correction value input by the editor is changed to 3 mm. Also, if you press numeric keypad 122 times instead of (2) on numeric keypad 122, the correction value of the editor input will be
This means that it has been changed to mm. This means that the correction of the editor input is not performed.As 0 or more, the correction of the editor input is performed according to the flowchart (7) Step 4-4-1, 4-4- of FIG. 19. 3.4-
This means that the value of 5 mm shown in 4-5.4-4-7 has been changed.

Explanation of area specification using keys〉 Next, section 6 explains area specification using keys and inputting coordinates.
This will be explained using FIG. 4 and FIG. 65. An area memory (not shown) stores in advance three rectangular areas represented by two points located on the diagonal of the area. Note that the data is memorized even when used for the first time. Therefore, when performing area specified copying, the user selects which of the three areas to make valid.

Note that the combinations of areas that can be selected from 5 are Area 1 only, Area 1 and Area 2. There are three types: area 1, 2 and 3. This section explains how to specify an area. First, area key 128
When is pressed once, the LED 138-1 (Fig. 64) lights up, and in this state only area 1 becomes valid. area key 1
When 28 is pressed a second time, LEDs 138-1 and 138-2 light up, and in this state area 1 and area 2 become valid.

When you press the third time, LE0138-1.138-2,138
-3 lights up, and in this state areas 1, 2.3 become valid. When you press it for the fourth time, all lights on LE0138 go out and the area designation is canceled.

As mentioned above, four pieces of coordinate data are stored in each of the three areas, and a case in which these data are changed will be described.

First, press area key 12 to specify the area you want to change.
Press 8, area 1 each time you press 8.
．． Area 2. Area 3 is selected and, as shown in FIG. 65, a pace pointer BP indicating data to be changed is designated.

Note that the display on the LED 138 at this time is the same as in the case of specifying the effective area described above.

After specifying the area to be changed, by pressing the point key 104, the coordinates to be changed can be selected. First, when the point key 104 is pressed, the LED 139-1 blinks, the base pointer is designated as xl, and the coordinates of Xi can be input. At this time, the currently stored
The data of i is displayed on the magnification display section 154. In addition, xl
is the X coordinate of the lower left corner of the area.

x2 is the X coordinate of the upper right corner, Yl is the X coordinate of the lower left corner, and Y2 is the X coordinate of the upper right corner.

When changing the Xi data, it can be done using the numeric keypad 122 or the zoom magnification key 109. Note that when changing the value using the zoom magnification key 109, the 1 display section 15
Increase or decrease the value displayed in 4.

Then, when the point key 104 is pressed, the magnification display section 15
The data displayed in 4 is stored as data in XI, and the currently stored data in x2 is displayed on the display unit 154, and the base pointer moves to x2. Furthermore, LED139-1 changes from blinking to lighting, and the LED of X2
Dl 39-2 flashes. If it is necessary to change the data of x2, perform the same operation as above. Similarly, data can be changed in the order of Yl and Y2 by pressing the point key 104. Press point key 109 and Y
When the data of 2 is stored, the 4 LEs of Xl-Y2
D139-1-139-4 goes out.

In addition, when the base pointer is not selected.

That is, when all of the LEDs 138-1 to 138-3 are off, the data of xlNY2 cannot be changed even if the point key 104 is pressed.

Furthermore, when the point key 104 is pressed, the LED 138 of the area selected by 1 decreases, allowing the user to confirm the value of the base pointer. When the storage of data up to Y2 is completed, the LED 138 of the selected area changes from blinking to lit, but the base pointer does not change unless the area key 128 is pressed.

Also, if you press the area key 128 while any of the xlNY2 LEDs 139 are blinking or lit, the base pointer will move to the next area, but if the base pointer is specified in area 3, the data will not be changed. The mode is canceled.

Explanation of Blank Exposure> Next, the control of the LED array 14 during area designated copying will be described.

FIG. 22 shows a portion of the RAM, in which an area necessary for control is secured. To simplify the explanation, the number of areas that can be specified is assumed to be two here. 200-5 stores the data of the area set by the operation unit 100 or the editor 70, and 200-1 stores the data of the area set by the operation unit 100 or the editor 70. Start data in the X direction (optical system scan direction) of area 0, 20
0-2 is the end data in the X direction of area 0, 200-3 is the start position data in the Y direction (vertical direction) of area 0, 200
-4 is the end data in the Y direction of area 0. Four data are set for 0 or more 1 area, and area l
The same applies to 200-6 is 200-3°20
This is 0N10FF data of the LED corresponding to data 0-4, and in this embodiment, 5×24 btt is provided, and 1 bit corresponds to one LED.

For example, 100°200-4 to 200-3 (YOE)
When (YOE) is set to 200, the LED array 14 has LEDs arranged at a pitch of 2.5 mm, so 200-6 is 100/2.5 = 20072.5 from the 40th bit. = Up to the 80th bit are set to 1, and all other bits are set to O.

Similarly, data corresponding to the Y direction data of area 1 is set in 200-7. 200-8 is the area used when changing the lighting state of the LED array, 200-6,
The same number of bits as 200-7 are provided. 200-
Reference numeral 9 is an area for setting the state in which the LED array is actually illuminated, and as described later, data in this area is output corresponding to each digit.

The transistor group 82 is driven. 200-10200-
11 is an output data switching flag used when changing the lighting state of the LED array.

This is an output current switching flag. 200-12 is a digit counter used to control which digit is output.

FIG. 23 shows how the LED array 14 corresponds to the area.
This is a flow showing how to control.

When copying starts, the optical system starts scanning in the X direction. In 201-1, it is determined whether the copy is within the area, and if it is the copy within the area, the process advances to 201-2 and the LED output data 200-
Set all l to 9. This causes all LED arrays 14 to light up and all images to be erased. If it is not an intra-area copy, the process advances to 201-3 and all 0s are set in the LED output data 200-9. As a result, all the LED arrays 14 are turned off, and an image appears in all parts in the Y direction. Then, in 201-4, it is determined whether or not it is the start timing in the X direction of area O, and N
The process proceeds to O-Naraba 201-12, and it is determined whether the end timing of area 1 in the X direction is reached. If NO, 201-
18, it is similarly determined whether or not it is the start timing in the X direction of area 1. If no, 201-20-
It is determined whether it is the end timing of r-I771 in the X direction. If NO, the process advances to 201-22 and it is determined whether it is the optical system reversal timing. If NO, proceed to 201-4.
If the timing to process is not reached like this, 201
-4 groan 201-12 → 201-18 → 201-20 → 2
The loop from 01-22 to 201-4 is repeated in order.

Here, when the start timing in the X direction of area 0 is reached, the process proceeds from 201-4 to 201-5 and performs a series of processes.

In 201-5, it is determined whether the start timing in the direction of area 0 is within area 1, and if YES, proceed to 201-6. In this case, since area 0 and area 1 overlap, the LED output buffer 200-8 Set the logical sum of area 0 LED data 200-6 and area 0 LED data 200-7, and proceed to 201-8. On the other hand, if No in 201-5, the start position of area O in the X direction does not overlap area l by one. It turns out. Therefore, LED output buffer 200-8 contains LED data 200-6 of area O.
Set the contents as is. Then, proceed to 201-8. In 201-8, it is determined whether or not the copy is within the area, and if it is the copy within the area, the process advances to 201-9.

At 201-9, the contents of the I and ED output buffers 200-8 are inverted, and at 201-10, the output current switching flag 200-
Set 11 and return to 201-4. For example, as in the previous example, < 200-3.
oo, 100-200 if 200 is set
The LED at the position in the Y direction corresponding to
ED will now be turned on, and images will be output only inside the predetermined area. Further, as will be described later, since only the output current switching flag 200-11 is set, the lighting state of the LED array 14 is switched after one cycle of digits 0 to 4 is strongly lit in the previous lighting state of the LED array 14. On the other hand, if it is determined in 201-8 that the copy is not within the area, the process proceeds to 201-11, where the output data switching flag 200-10 and the output current switching flag 200-11
Both flags are set. Since the LED output buffer is not inverted, 6<200-3°20 as in the previous example.
If 100 and 200 have been set in 0-4, only the LEDs corresponding to 100 to 200 in the Y direction are lit, and the image in that part is erased. Also, output data switching flag 200-10 and output current switching flag 200-1
Since both flags 1 are set, as will be described later, the lighting state of the LED array 14 is switched from the next digit 0 timing, and the LED array 14 is turned on strongly for one period. Next, the case where the end timing in the X direction of area 0 has come will be explained. 201-12 to 20
1-13, it is determined whether the end timing of area O in the X direction is between the start position and end position of area 1. If YES.

201 = 14, and the copying of area O has been completed, but since the end position of area O in the X direction is included in area l, area I is stored in the LED output buffer 200-8.
Set the data of LED data 200-7. On the other hand 2
If NO in 01-13, proceed to 201-15, since the end position of area O in the X direction is not included in any area, L
All O's are set in the ED output buffer 200-8.

Next, in 201-16, it is determined whether or not it is a medium copy, and if it is a medium copy, the process advances to 201-17, where the contents of the LED output buffer 200-8 are inverted as before. And 201-
In step 11, the output data switching flag 200-10 and the output current switching flag 200-11 are set, and the process returns to 201-4. On the other hand, if NO in 201-16, the process advances to 201-10, where only the output current switching flag is set, and the process returns to 201-4.

Next, when the start timing of area 1 in the X direction comes, 2
The process advances from 01-18 to 201-19, and in 201-19, the same process as in the case of the start timing in the X direction of area O described above is performed.

This is a process in which the area numbers O and 1 are changed, and the explanation will be omitted.

Also, if it is the end timing in the direction of area l, 2
Proceeding from 01-20 to 201-21, here the process is performed with the end timing of area O in the X direction and the area numbers changed to 0 and 1. As the optical system scans, the timing of reversal comes. , 201-22 to 201-
Proceed to step 23 and input all the LED output data 200-9.
Then, all the LED arrays 14 are turned on and unnecessary images are erased.
Also, the optical system begins to move backward and one cycle ends. The same applies when there are three or more areas.

Next, the portion that controls the dynamic lighting of the LED array 14 will be explained with reference to FIG.

This routine is executed by a timer interrupt every 1m5ec.

First, the operation when both the output current switching flag 200-11 and the output data switching flag 200-10 are not set will be described. Digit counter 200-12 is updated at 202-1. In this embodiment, the digits are from 0 to 4, and the digit counter 200-1
2 is also updated with a value from O to 4. If it is not 0, the process goes to 202-11, and if it is 0, the process goes to 202-3 to turn off the strong lighting. 202-4 groan 202-8 → 202-11
Then, the digit output and segment output corresponding to the digit counter 200-12 are set. For example, if the digit counter 200-12 is 0, digit 0 is turned on, and the segment output is set to LE.
The contents of data 200-13 corresponding to digit 0 of D output data 200-9 are output. If it is 1, the corresponding LED is turned on, and if it is 0, the corresponding LED is turned off.

And it ends. The digit counter is updated sequentially, and at the next timing, digit 1 is turned on at 202-11, and the contents of 200-14 corresponding to digit l of LED output data 200-9 are output to the segment output. Ru.

Next, a case where both the output current switching flag 200-11 and the output data switching flag 200-10 are set will be described. The content of digit counter 200-12 is O
The same process as above is performed until 0, and when it becomes 0, 2
02-2. Proceed to 202-3 and turn off the strong lighting. At this time, the strong lighting is off in the previous state, so it has no meaning here.

Next, it becomes 202-4 pass 202-5, turn on the 1 strong light,
Reset the output current switching flag 200-11 Next, proceed to 202-6 → 202-9, reset the output data switching flag 200-10, and at 202-10 turn on the LED.
The contents of the output buffer 200-8 are converted to the LED output gator Z0.
Set to 0-9. Then, the process of 202-11 is performed and the process ends. And the primary digit counter 200-1
When 2 becomes O, the process changes from 202-2 to 202-3, and the strong lighting is turned off.Since both flags have already been reset, the process changes from 202-4 to 202-8 to 202-11, and normal processing is performed. Therefore, the LED array output state changes at the timing of digit O, and from there, the output state changes from 1 to 1 for one cycle.
The strong lighting turns on.

Next, the operation when only the output current switching flag 200-11 is set will be explained.

200 when digit counter 200-12 reaches 0
-2 → 202-3 and turns off the strong lighting. 202-4
→202-5 and performs the same processing as described above. This time it changes from 202-6 to 202-7 and output data switching flag 2
02-11 is set, and the process ends after passing through 202-11.

Next, when the digit counter 202-12 becomes 0, 2
02-2 → 202-3, and the strong lighting is turned off. 202
-4 → 202-8 → 202-9, the output data switching flag 200-1O is reset, and at 202-1o it goes low.
LED output buffer 200 to ED output data 200-9
-8 is set, and the output state of the LED array 14 is changed. Therefore, the output state of the LED array 14 is turned on for a little more than one cycle from digit 0 in the output state of the LED array 14 one cycle before, and then the output state of the LED array 14 is updated.

The timing of changing the digit output, strong current, and LED output data is shown in FIG. 25. At time t1 in FIG.
is the start or end timing of the area, and at this time, the above-mentioned output current switching flag 200-11. The output data switching flag and the contents of the LED output buffer 200-9 are set depending on the image conversion mode.

The strong lighting is at the subsequent first digit O output timing t
It turns on at 2 and then turns off after one cycle T. On the other hand, LE
D Output data is changed at timing t2 or t3 depending on the image conversion mode and whether the area starts or ends. 9 At time t2, the changes are the end timing of the area for intra-area copying and the start of the area for outside-area copying. It's a case of timing. Furthermore, the changes made at t3 are the area end timing for out-of-area copying and the area start timing for intra-area copying. As a result, as shown in FIG. 26, strong lighting is turned on on the non-image area side at the boundary between the image area 204-2 and the non-image area 204-1 in either the intra-area copy mode or the outer-area copy mode. As a result, sharp edges are maintained. Furthermore, by changing the lighting state of the LED in synchronization with the timing of digit O, the edge becomes more linear. The situation is shown in FIG. 27.

In Figure 27, 205-1 is LE with digit 2, for example.
This shows the case where the lighting of D is switched from all off to all on. In this embodiment, d is the distance that the drum travels in 1 m5ec, but as shown in the figure, a maximum deviation of 4d will occur. However, as in the present invention, the digit O
By synchronizing with , the deviation is always d as shown in 205-2, so the boundary portion appears smooth. Also LED
Further linearity can be achieved by mounting the array at an angle.

FIG. 28 is a diagram showing the output result when there are two areas in the intra-area copy mode, and the shaded area is the area where the image is output. As mentioned above, since the two areas are logically summed, an image of only the desired portion can be obtained even if the two areas are separated or overlap.

FIG. 29 is a diagram showing the output result when there are two areas in the out-of-area copy mode, and the shaded area is the area where the image appears. As with intra-area copying, a desired portion of the image can be erased even if the areas are far apart or overlap.

Description of Editor ■> Next, different embodiments of area specification will be described. FIG. 30 shows the editor 250-1.

250-2 is a part for setting image conversion mode.

250-3 is a part for specifying an area.

In the mode setting part, fill specification of 250-4, 2
There are 50-5 color specification within the area, 250-6 color specification outside the area, 250-7 area black and white specification, 250-8 copy outside the area, and 2 points specified for the area specification part 250-3. By pressing the mode setting part after
When the area (a rectangle with two diagonal points) is set, the mode of that area is registered.

The filling designation 250-4 is for filling the set area in color regardless of the state of the document. 25
0-5 color specification within the area outputs an image with color toner only inside the set area, and 250-6 color specification outside the area outputs an image in color only outside the set area. be. 250-7 area black and white specification outputs the image in black only inside the set area, and 250-7
Point designation outside the area of 0-8 outputs an image in black only outside the set area.

Fig. 31 shows an area data area 251-7 provided in the RAM for storing specified area data. , a portion 251-1 for storing modes such as outside points, and portions 251-2 to 251-5 for storing coordinates of designated areas. In the region data area 251-7, a plurality of pieces of data 251-6 regarding one area designation are set. When two points on the area designation part 250-3 are pressed and then the mode designation part 250-2 is pressed, the mode changes to 251-1.
Additionally, point data is stored in 251-2 to e51-5.

The 32nd copy operation after the next copy command is input is
This will be explained according to the diagram. First, in step 252-1, all locations where the mode of area data area 251-6 is stored are searched and investigated. At step 252-2, it is determined whether a black fill mode or a red fill mode is set therein. First, the case where it is set will be explained.

252-3 feeds the transfer paper from the cassette, and performs a copying operation that fills in only the portion corresponding to the specified fill area with the specified color, as described later.The transfer paper is placed with the copied side facing down. 2 is set in the paper feed section 23.

At this time, the transfer paper is placed at the designated 255 as shown in Figure 35.
Only the -2 part is filled with color, and the other parts are white. 252-4 determines whether there is a color within area or outside color mode specified, and if NO, 25
Proceed to 2-7. If YES, it is determined in 252-5 whether the mode of black inside the area or point outside the area is specified, and NO.
Then go to 1f252-7! M-Yes? e Raba 252-
Proceed to step 6. Therefore, if you want to copy both color and black, go to 252-6, and if you want to copy one color, go to 252-6.
It is now possible to proceed to 2-7. 252-6 feeds paper from the second paper feed unit, performs color copying in the area designation mode to the designated area as described above, and transfers the transfer paper to the second paper feed unit again.
252-8 feeds the paper from the second paper feed unit, which is loaded with the copied side facing down into the paper feed unit, performs black copy in the area specification mode on the specified area, and prints the transfer paper into the machine. Eject it outside and finish the copying operation.

Therefore, in this case, first, as shown in FIG.

Make a fill copy, then make a red copy on the same side, and finally make a black copy on the same side and finish.

On the other hand, if the process advances to 252-7, paper is fed from the second paper feed section 23, a copying operation is performed according to the designated color and area, and the transfer paper is discharged outside the machine, and the process ends.

Next, we will explain the case where the fill mode is not specified. The process advances to 252-2-252-9, and it is determined at 252-9 whether there is an in-area color mode or an out-area color mode. If No, proceed to 252-12; if YES, proceed to 252-10. At step 252-10, it is determined whether or not the black inside area or point outside area mode is set.

If there is, proceed to 252-11; if not, proceed to 252-12. That is, if it is necessary to make both a color copy and a black copy, the process proceeds to 252-11, and if only one is required, the process proceeds to 252-12. 252-11 feeds paper from a cassette, copies in color to a designated area, and sets it in the second paper feed section 23 with the copied side facing down. In 252-8, same as above. Paper is fed from the second paper feed section, a black copy is made, and the process is completed by ejecting the paper to the outside of the machine. On the other hand 25
If the process advances to 2-12, paper is fed from the cassette, a copying operation is performed according to the designated color and area, and the transfer paper is discharged outside the machine, and the process ends.

Next, fill-in copy will be explained.

When filling in the image, by leaving the exposure lamp 24 off, an electrostatic latent image of a solid image is formed on the photosensitive drum 20. Therefore, as explained in the above area copy, by selectively lighting up one LED array 14 at the timing according to the designated area, the latent image of the unnecessary part is erased and only the desired part is output as a solid image. I can do it. FIG. 33 shows the flow.

At step 253-1, the LED array 14 is fully turned on, and thereafter, feeding of the transfer paper is started at a predetermined timing.

Next, 253-2 determines whether or not it is the area start timing, and if NO, the loop is returned to 253-2.When the area start timing is reached, 253-3 moves the LED array 14 to Select lighting according to the direction coordinates.

Next, in 253-4, it is determined whether or not the end timing of the area in the X direction has come. When the end timing of the area in the X direction has come, in 253-5, all I and ED arrays 14 are lit,
Erase the image over the entire area. Then, it is determined by counting pulses at 253-6 whether or not the development for the size of the transfer paper has been completed, and if YES, one cycle is completed.

Next, an example of the copy result is shown in FIG.

In the diagram, 254-4 is filled in with color,
254-3 is copied in black.

This is the same for the image in 254-4, and as shown in Figure 1, "A B
The black text "C" (corresponding to the M manuscript) is output. The original is copied in color in 254-2, and the image is deleted in other parts. The operation in the desired case is as follows: Set the original on the editor 250-1 and input two points on the diagonal line of the area 254-4 using the editor.
Specify the fill mode. Press two points on the diagonal line of the area 254-3, then press the area color specification part of 250-5, press two points on the diagonal line of the area 254-2, and finally specify black and white area of 250-7. Press the button. Then, place the original on the document table and press the copy key. These input operations first copy the filled part of the area 254-4, first copy the part 254-2 on the same side in color, and finally copy the part 254-3 in black,
Copying ends automatically. This can be done with very simple operations. Furthermore, since the filled-in copy is performed first, the document can be copied over the filled-in area, and a good copy can be obtained, for example, when a title section is to be highlighted. In addition, you can enter the color part, black part, and fill-in part at the same time, and the operation is very easy, without having to set the original on the editor many times or on the original platen.
And it matches the thinking of a single person.

Furthermore, by using a narrow LED during irradiation, it is also possible to draw a thin line such as an underline.

In the example of the output result shown in Fig. 34, there is only one area in each of the color within area, black and white area, and fill mode, but it goes without saying that multiple areas are possible as explained above. be. Further, although only the mode shown in FIG. 30 is registered for one area, it is also possible to add, for example, copy magnification and position designation of where on the transfer paper the image of the area should be displayed.

Copy magnification and 1 position designation are added to the section 251-1 shown in FIG. 31 where the mode is recorded.

During copy operation 1 For example, two areas with color inside are registered, and one of them is 100% (area L)
If the other one is set to 64% (area 2), 252-6 or 25% in the flowchart shown in FIG.
The operation of step 2-11 can be done as follows, 10
A color copy is made of only area l at a copying magnification of 0%, and the transfer paper is set in the second paper feed section 23.

Next, change the magnification and set the copy magnification of 64% to the second paper feed section 23.
A color copy is made of only area 2, and the transfer paper is set in the second paper feeding section 23 again. Further, it is possible to specify a position by calculating the difference between the value of one position specification and the position of the area, and shifting the transfer timing of the transfer paper by the difference (only in the X direction in this embodiment). Similarly, in the case where a position is specified, for example, if the amount of deviation in the feeding timing of the transfer paper due to the specified position in a certain area is different from the amount of deviation in another area, multiple copying may be performed by dividing into two exposures.

Furthermore, if multiple copies are made on a single sheet of transfer paper many times, the transfer paper will be damaged, leading to poor conveyance and paper jams, or poor transfer performance, making it impossible to obtain good images. Therefore, each time an area is registered, it is calculated how many times multiple copies must be made, and if the value exceeds a predetermined value, the registration is prohibited and a 1g notice is displayed.

In the above embodiment, the images of each designated area were multiple-copied onto the same transfer paper, but each area may also be copied onto separate transfer paper, and it is also possible to copy each area onto separate transfer paper. case.

It is also possible for the image in the designated area to appear at the leading edge or center of the transfer paper. By pressing the trouble key 121, pressing the opening of the numeric keypad 122, and pressing the trouble key 121, it is possible to specify that the designated area be copied onto separate transfer sheets. Also.

By pressing the numeric key 121, the opening of the numeric keypad 122, and the numeric key 121, it is possible to specify that one image be aligned with the leading edge of the transfer paper.

Furthermore, by pressing the numeric key 121, pressing (4) on the numeric keypad 122, and then pressing the numeric key 121, it is possible to specify that one image be placed in the center of the transfer paper.

At the start of the copying operation, first, copying is performed according to the mode and coordinates set at the beginning of the area data area shown in FIG. 31, and then the transfer paper is discharged outside the machine. If the mode set at the beginning is in trouble, the transfer paper feed timing is delayed by xO. If the mode set at the beginning is difficult, the first calculation is performed.

However, one sentence is the transfer paper size.As a result, if the value of T is positive, the transfer timing of the transfer paper is delayed by T. On the other hand, if the value of T is negative, the timing of feeding the transfer paper is advanced by ITl.

Next, referring to the second area designation of the area data area in FIG. 31, if it is registered, it is similarly copied and ejected from the machine.

Then, copying is performed sequentially, and all areas registered in the area data area of FIG. 31 are copied, and the series of copying operations is completed.

As described above, according to the present invention, for example, when newspaper articles are filed item by item, multiple newspaper articles can be specified at once. It is also possible to copy onto separate transfer sheets with a single copy command. Furthermore, it is very convenient because the article can be copied to a desired position on the transfer paper.

Figure 35-1 shows the output result when two areas are specified to appear in the center of separate transfer sheets.
35-12 and 35-13 are designated for the original, and the portion 35-12 is copied onto the center portion 35-15 of the transfer paper 35-14. Also, the center portion 3 of the transfer paper 35-16
The part 35-13 is copied to 5-17.

Description of Copy Paper Conveyance Path> As described above, this embodiment has two systems of copy paper refeeding mechanisms for realizing double-sided copying or multiple copying. That is, the second paper feed section 23 and the intermediate tray 40
It is. Which of these is used depends on the copy mode.

That is, the copy program determines the optimal system based on the size of the copy paper and the copy setting count. The former is a paper refeed unit that is essential for realizing double-sided and multiple copying.
Since horizontal registration is easy with the mechanism described later, there is a degree of freedom in the size of one sheet. However, it is not possible to store more than one sheet of paper there; the latter, on the other hand, allows multiple sheets of paper to be stacked, but only allows for lateral alignment of a predetermined fixed size.

Part 63: How to choose a paper path for double-sided/multiple copying
This will be explained according to the diagram.

When a copy operation is started by a copy command.

First, in step 270-1, it is determined whether double-sided/multiple copying is to be performed on the same original, that is, without exchanging the original. In that case, the answer is YES. If YES,
At 270-2, it is determined whether the original is a standard size or not. If it is not the standard size, the process advances to 270-5 and the second paper feed section 23 is unconditionally selected. If YES, 270-4
Proceed to , determine whether the set number of copies is 1, and select YES.
If so, proceed to 270-5 in the same way, if NO, proceed to 270-4
Determine whether the set copy number is greater than 30 sheets, which is the maximum number of sheets that can be loaded on the intermediate tray 40, and if YES, select 270-5.
If no, proceed to 270-8.

270-5 copies one sheet and transfers the transfer paper to the second paper feed section 23.
The transfer paper is set in the printer, the paper is re-fed from the second paper feed section 23 at 270-6, the copy is made, and the transfer paper is discharged to the outside of the machine.

270-7 determines whether copying of the set number of sheets has been completed, and if NO, 270-5 → 270-6 → 270
-Repeat the loop of 7.

The copy operation continues until the set number of copies is completed, and then ends. On the other hand, if the process advances to 270-8, copying is performed using the intermediate tray 40. At 270-8, copies are made for the set number of sheets, and transfer paper is set on the intermediate tray 40. Next, at 270-9,
Re-feed the paper from the intermediate tray 40 and copy the set number of sheets L,
41! Discharge outside and finish.

If it is determined No in 270-1, proceed to 270-10. In 270-10, it is determined whether the original is a standard size, and
If O, the copy setting number is set to 1 at 270-17, and the process proceeds to 270-18. If YES, determine whether the set number of copies is 1 at 270-11; if YES, 27
The process advances to step 0-18 and the second paper feed section 23 is selected.

If NO, select the intermediate tray 40.

The number of copies is determined at 270-12, and if it is 30 or more, 30 is set as the set number of copies at 270-13.

Next, at 270-14, the set number of copies are made in the same manner as at 270-8, and the copies are set on the intermediate tray.

When the original is replaced at 270-15 and a copy command is output, the process is copied at 270-16 in the same manner as at 270-9, and the process ends. On the other hand, when the second paper feed section 23 is selected, the second paper feed section 23 is selected.
Copy 70-18 in the same way as 270-5, and 270-1
When the original is exchanged at 9 and a copy command is output, 270
At -20, copy in the same way as 270-6 and end.

As explained above, in this embodiment, multiplex/double-sided copying, temporary copying, and copying other than standard sizes are possible.

That is, when feeding paper from the universal cassette or manual feed tray, and when copying one sheet, one sheet is fed from the intermediate tray 40.
The sheets are sent directly to the second sheet feeding section 23 for re-feeding without being sent to the second sheet feeding section 23. When copying a large number of regular sheets, the sheets are once stacked on the intermediate tray 40 and then sent to the second sheet feeding section 23 for re-feeding.

The selection of which of the two types of systems to use is not made by the operator, but is done automatically by the sequence program, so the operator does not have to think about it each time, and control is always performed using the optimal system. In addition, for non-standard multiple copies, it is possible to perform copying one sheet at a time using the second paper feed without using an intermediate tray. Furthermore, the inconvenience of transfer paper (
size is too small, etc.).

Unnecessary troubles can be avoided by ejecting the data outside the machine without performing double-sided/multiple copy processing.

The copying apparatus of this embodiment can also be equipped with an automatic document feeder (hereinafter referred to as ADF), and the ADF is shown in FIG. Various proposals have been received so far.

The operation will be briefly explained here. 26 in Figure 61
0-12 can set multiple originals.

This is an ADF that automatically feeds paper, 260-11 is a document tray for setting the document, 260-10 is a document sensor for detecting the document, 260-1 is a paper feed auxiliary roller for feeding the document, 260- 2 is a north belt, 260-3 is a lower belt, 260-5 is a paper feed roller, and 260-6 is a drive roller.

260-7 is a conveyor belt driven by 260-6;
260-8 is a paper discharge roller, and 260-9 is a paper discharge tray section.

When a document is set on the document tray 260-11, the document sensor 260-10 detects the document. A motor (not shown) rotates in response to the copy command, and each drive unit starts operating. The paper feed auxiliary roller 260-1 moves in the direction of arrow A by a mechanism not shown, conveys one document to the paper feed roller 260-5, and the paper feed auxiliary roller 260-1 rises. After that, the original is conveyed by the paper feed roller 260-5 and the conveyor belt, and the leading edge of the original is brought to the original platen 5 shown in FIG.
It will stop when it reaches the reference position.

Exposure of the original is started by moving the optical system, and when the exposure of a predetermined number of originals is completed, the ADF starts operating again. At this time, if the document sensor 260-10 detects the document, it feeds the next document in the same way as described above, and at the same time the document set on the document table 5 passes through the paper ejection roller of 260-8. The paper is discharged to the paper discharge tray section 260-9. Then, the next original is copied. This operation is repeated until there are no more originals on the original tray 260-11. When the last original is set on the original platen 5 and the prescribed original exposure is completed,
At this time, the document sensor 260-10 does not detect the document, so no paper feeding operation is performed, and the document is discharged to the paper discharge tray 260-9, completing one series of copies.

FIG. 62 is a flowchart illustrating that copying operations differ depending on the number of ADF originals in double-sided or multiplex mode.

In Step 7-1), the original is set in a predetermined position. At that time, the document tray 260-1
The document sensor 260-10, which detects the presence or absence of a document in the original document 1, determines whether there is one document or a plurality of documents (Step 7-2).

First, we will discuss the case where there is only one manuscript.

If NO in step 7-2, it can be determined that there is only one original set. The operation of copying the first side is completed,
Convey the transfer paper to the second paper feed section 23 (Step 7-13
), and the original is ejected (Step 7-14), and the transfer paper in the second paper feed section performs the copying operation for the second side according to the primary copying operation start command, completing the series of copying operations. do.

Next, a case where there are multiple manuscripts will be described.

If Yes in step 7-2, it can be determined that there are multiple originals set. The copying operation for the first side is completed, and the transfer paper is conveyed to the second paper feeding section 23 (Step 7-
3). Then, the original is ejected, and then the original tray 260-
11 is fed (Step 7-4). Second
Copying the first side and ejecting the transfer paper 4 outside the machine (S
step 7-5). Then, it is determined whether there is an erroneous document in the document tray 260-11 (step 7-6), and if there is no document, the document is ejected (step 7-14), and the series of copying operations is completed.

Also, if there is a document in the document tray 260-11.

Eject the original and feed the next original (Step 7-7)
, and then it is determined whether or not the next document is in the document tray 260-11 (Step 7-8).

If there is, perform the copy operation for the first side, and then copy the second paper feed section 2.
3, the transfer paper is conveyed (Step 7-9). Then, the original is ejected, the first original is fed, the second side is copied, and the transfer paper is ejected from the machine. And again, 5tep7
- Execute processing from 6.

If NO in step 7-8, after the copying operation for the first side is completed, the transfer paper is ejected from the machine (step 7-12), and the original is ejected (step 7-14), completing a series of copying operations.

As described above, differences in copying operations depending on the number of ADF originals have been described. Now, this effect has the following effects.

For example, when performing double-sided multiple copying of a combination of large-sized originals such as newspapers that cannot be fed by an ADF and originals that can be fed by a regular ADF, conventionally, when the number of originals set is one The ADF could not be used to obtain double-sided or multiple copies for ejection.

Furthermore, for the same reason as described in J:, it was not possible to make double-sided copies of double-sided originals using the ADF.

Also, when using the masking and trimming copy modes together to obtain multiple or double-sided copies of two originals, it is not possible to specify the area for the two originals at the same time. However, for the same reason as mentioned above, there was a serious drawback in that the ADF could not be used to make the desired copy.

According to the present invention, the above-mentioned drawbacks can be eliminated, and in the case of an odd number of originals in a series of multiple sheets, the last copy is ejected outside the machine, so that it can be used in the same manner as in the past.

After the processing in steps 5-13 and 7-14 described above, the transfer paper is in the second paper feed section 23. A flowchart regarding the initial processing is shown in FIG. 62-1.

When the reset key 119 is pressed (Step 7-15)
, the transfer paper in the second paper feed section 23 is transported by the paper bus for the second side and discharged out of the machine (Step 7-21) - The copy key 117 is pressed (Step 7-16), A
If there is a document in the document tray 260-11 of the DF (St
ep7-17), feed the original 5tep7-18),
The copying operation for the second side is performed, and the transfer paper is discharged outside the machine (Step 7-19). Then, the original is ejected and the series of copying operations is completed (SteP7-20).

5If there is no original in step 7-17, it is determined that the original has been manually set, the second side is copied, the transfer paper is ejected from the machine (step 7-20), and the series of copy operations is completed. .

Description of Sequence> Next, the sequence will be explained using FIGS. 36 to 6o.

The operation when the power is turned on will be explained. FIG. 36 is a time chart when the power is turned on. When the main SW is turned on, the fixing heater and black developer release solenoid are turned on.

Eventually, the fuser temperature reached 190'C! When it reaches , the motor is rotated, and after 1 second (.ff+), the black developer pressure solenoid is turned off. As a result, the black developing device reaches the one-stage release position and then approaches the drum. Thereafter, when the drum rotates once, the main motor is stopped. Furthermore, if the middle plate of the cassette in the paper feed section is down when the motor starts rotating, the middle plates of both the upper and lower cassettes begin to rise. This situation is shown in Figure 37, and after the middle plate has finished rising, the main motor is stopped (
・■).

Figure 37 is a time chart for the rise of the middle plate, and is the same for both the upper and r stages. When the middle plate rising clutch is turned on, the middle plate begins to rise. Eventually, the output of the middle plate detection sensor becomes 1, and after 0.1 seconds from this point, the middle plate lifting clutch is turned off. -The force paper detection sensor is activated by raising the middle plate.

As shown in the figure, if there is paper, it will be 1 before the output of the middle plate detection sensor becomes 1.
The positional relationship is such that the output of the paper detection sensor is 1. Further, when the output of the middle plate detection sensor becomes 1, it is determined whether the 1 paper detection sensor is present, and if the output is O, the paper out display is turned on.

Further, if no cassette is installed, this operation is not performed.

Next, the copy operation will be explained. When the copy key is pressed, the main motor, high voltage, and document illumination lamp are turned on. Also, the paper feeding operation described later.

The developer pressurizes. After one rotation of the drum, the optical system moves forward and turns on the registration roller tl after the image edge is detected. After that, it will turn off after a period of time depending on the paper size. After that, the optical system comes to the inverted position.

The optical system moves to reverse. The original illumination lamp is turned off by 0.2 sand diameter. When the optical system returns to the home position, the optical system is stopped and backward rotation begins. It stops after the transfer paper is ejected outside the machine. In the case of color copying, a developer pressurizing operation, which will be described later, is performed.

Next, the pressurizing operation of the developing unit will be explained. FIG. 39 is a timing chart when color copying is started with the black developing device set. First, turn on the black developer release solenoid to release the black developer from the drum. After the release is completed, the color pressure solenoid is turned on and the color developing device is set on the drum. When copying is complete, turn off the color pressure solenoid.

Release the color developer. Incidentally, at this point, the black developing device remains disabled. In order to smoothly replenish color toner, this is always canceled when color copying is completed (ii). When starting black or color copying from this state, both developing devices are already released. Further, after black copying, the black developing device remains set on the drum.

Next, the paper feeding operation will be explained. The timing chart is shown in Fig. 40. If the output of the middle plate detection sensor is O at the start of copying, the middle plate lift operation is performed in the same way as explained in Fig. 37. After the middle plate and the raising operation are completed, the paper feed clutch is ON
L. The transfer paper begins to move. Thereafter, when the transfer paper reaches the registration front paper sensor, the output of the registration front paper sensor becomes 1, and after a predetermined time, the paper feed clutch is turned off, and the transfer paper hits the registration rollers and stops in a loop state.

Thereafter, as the copying operation progresses, the paper feed clutch is turned on again for a predetermined period of time when the registration rollers are turned on, thereby reducing the paper feeding load on the registration rollers. On the other hand, after that, the control of the middle plate is performed asynchronously with the copying operation, and when the output of the middle plate detection sensor becomes O, the middle plate raising clutch is turned ON.
Then, 0.1 seconds after the output of the middle plate detection sensor becomes 1, it turns off.

Also, the presence or absence of the cassette is constantly detected, and if the cassette begins to come out, the operation of lifting the middle plate is immediately stopped.

Next, the paper feeding operation for manual copying will be explained.

At the same time as copying starts, turn on the manual feed tray lift clutch and start pushing up the single manual feed tray. As it rises, if transfer paper is set, the output of the paper detection sensor becomes 1. After a predetermined period of time, the paper feed clutch is turned on and one sheet of paper is fed into the machine. After the time tS until the transfer paper is gripped by the next roller, the first manual feed tray lifting clutch is turned off, and as the manual feed tray descends, the output of the paper detection sensor becomes O. On the other hand, the transfer paper is sent to the pre-registration sensor S7, and a predetermined time after the output of the pre-registration sensor S7 becomes 1, the paper feed clutch is turned off, and the transfer paper hits the register roller, forming a loop and stopping.

Next, the copying of the first side of a double-sided copy of a single will be explained. High pressure, unit, wrap.

Since the movements of the optical system, paper feeding operation, etc. are the same as described above, the movement of the transfer paper after the registration roller 12 is turned on will be explained. FIG. 41 is a timing chart in which the transfer paper is sent to the fixing device by turning on the registration roller. After that, when the paper passes the paper discharge sensor, the output of the paper discharge sensor S4 becomes 0-1-0. At this time, the lateral registration means, which will be described later, is moved to the home position, and after a predetermined period of time, when the transfer paper is gripped by the paper ejection roller 27 at a position approximately 10 mm from the trailing edge, the reverse solenoid is turned on, and the transfer Make the paper switchback. At this time, the second transport latch is also turned on. The transfer paper is sent to the second conveyance section 23, and the second pre-registration sensor S
The output of 5 becomes 1. After a predetermined period of time, the second transport latch is turned off, and the transfer paper hits the second registration roller, creates a loop of about 15 mm, and then stops. At this time, the reverse solenoid is also turned off. Moreover, the second transport section 23 is.

For manual copying where the transfer paper size is unknown and can only feed transfer paper with a length of approximately 180 mm or more, set the registration roller 12 on to vertical = 180-24 (24 mm is the distance between the registration front paper sensor and the registration roller). After the distance, the input of the paper sensor S7 in front of the registration is determined, and if there is no paper, the size of the transfer paper is 180 mm or less, so
After that, it does not enter switchback operation and is ejected from the machine. On the other hand, if there is one sheet of paper, the size of the transfer sheet is 180 mm or more, so a predetermined operation is performed.

Next, the first side of multiple copies of a single will be explained.

The movement of the transfer paper after the registration roller is turned on will be explained. Fourth
Figure 2 is a timing chart showing this. When the registration roller is turned on, the flapper solenoid 29 is turned ON, and the lateral registration means (second registration roller 37, which will be described later) is turned on.
) to the home position. After the transfer paper has moved by a distance, the pre-registration sensor is checked in the case of manual copying, as in the case of double-sided copying described above. If the paper is not detected, the flapper solenoid 29 is turned off and the paper is ejected to the outside of the machine. do. When the transfer paper advances and the output of the paper discharge sensor S4 becomes 1, the second transport latch is turned on. The second transport latch is turned off after a predetermined time t4 after the transfer paper is transported to the second transport section 23 and the output of the second pre-registration sensor becomes 1. The transfer paper forms a loop when it hits the second registration roller 37 and stops. Since the curling state and direction of the transfer paper are different from the case of double-sided copying described above, the value of the time t4 from when the 55t7) output of the second pre-registration sensor becomes 1 until it stops changes.

Next, the copying operation for both sides of a single copy and the second side of multiple copying will be explained based on FIG. 44. The transfer paper is already l.
It is located in the s2 transport section and hits the s2 registration roller 37, forming a loop and stopping. When copying starts, the second registration roller clutch and double-sided transport latch are turned on, and the transfer paper moves toward the second registration roller 12! h! start. After 0.1 seconds, the lateral registration adjustment operation, which will be described later, is started with the second registration roller engraved at a position 17 mm from the leading edge of the transfer paper. After the output of the pre-registration sensor becomes 1 and a time Tb elapses, the second registration roller clutch and both-side conveyance latch are turned off. The transfer paper hits the registration roller, creates a loop, and stops.

After that, the optical system starts moving forward, and it is time to turn on the register rollers. After the transfer paper has been fed by approximately 5 mm, in the case of single-sided copying, the second registration roller clutch and duplex transport latch are turned on, and the transfer paper advances with the loop reduced by 5 mm. On the other hand, in the case of multiple copying, the transfer paper advances Only the transport latch is turned on, the transfer paper is pulled by the register roller 12, and the second register roller 37 becomes a load.
The transfer paper continues to be conveyed with the loop amount being 0. Thereafter, the transfer paper passes through a fixing roller and is ejected from the machine, completing the copying process. Furthermore, the time tb for determining the loop amount before registration is set differently from that in the case of paper feeding from a cassette because the transfer paper conditions are different.

Next, the operation of setting the second registration roller to the lateral home position will be explained. The drive of the main motor is transmitted to the second registration roller via a spring clutch.
By turning on the lateral registration solenoid, it is possible to move in the lateral direction. A lateral registration home sensor for detecting the position of the second registration roller and a lateral registration paper sensor for detecting the transfer paper placed between them are arranged. The second registration roller moves in both directions with respect to the axial direction of the drum, but in order to improve stopping accuracy, it is always stopped by moving in one direction. That is, as shown in the timing chart of Fig. 45, if the output of the lateral registration home sensor is 1 at first, it is stopped when it changes from 1 to 0-1, and if it is 0 at first, it is stopped when it becomes from O to 1. let

Next, the lateral registration adjustment operation will be described. In FIG. 47, 37 is the second registration roller.

S8 is a horizontal registration paper detection sensor, and SH is a transfer paper. When the second registration roller 37 is set to the home position, it is stopped at the center point of the operating range, and by turning on the horizontal registration solenoid, the arrow ■+f■
→・1) Move as if groaning. $2 Registration roller 3
7 is stopped at the home position and a transfer paper is inserted, depending on the position where the transfer paper enters, the horizontal registration paper sensor may or may not be detecting the paper at first. First, the case where paper is detected will be explained. As shown in FIG. 46, the output of the lateral registration paper sensor changes from 1 to 041 and is stopped. Furthermore, if the transfer paper comes in extremely biased towards the lateral registration paper sensor, there is a possibility that the output of the lateral registration paper sensor will always be 1. Even in such cases, we do the following to ensure that the vehicle stops at the appropriate position. That is, as shown in Fig. 47, when the transfer paper moves in the direction of arrow ■ and arrow -■, it is the time when the transfer paper is furthest away.If the output of the horizontal registration paper sensor is 1 at this point, then from there it moves in the direction of arrow ■. Therefore, the output of the horizontal registration paper sensor never becomes O. Also, the most appropriate position is to stop at that point. Therefore, if the time of one cycle of the horizontal movement of the registration roller is T, then even if the registration roller is moved by a time corresponding to arrows ① and ②, if the output of the lateral registration paper sensor does not become 0, it is stopped there.

Next, we will first describe the case when the output of the horizontal registration paper sensor is O, that is, the transfer paper is cutting the horizontal registration paper sensor. At this time, as shown in FIG. 46(ii), the process is stopped when the output of the horizontal registration paper sensor changes from 0 to 1. Also, if the transfer paper comes in at an extremely far distance from the horizontal registration paper sensor, the output of the horizontal registration paper sensor will remain O. Even in that case, in order to stop it at the appropriate position as much as possible,
If the output of the horizontal registration paper sensor does not become 1 even after moving for the time 1/4T corresponding to ■ in FIG. 46, it is stopped at that point.

Next, the operation of the first side of double-sided copying when an intermediate tray is used will be explained. After copying starts, paper feeding, high pressure,
Since the movement of the optical system is the same as described above, the movement of the transfer paper of the first Luzistro roller will be explained. FIG. 48 is a timing chart in which the flapper solenoid and intermediate tray flapper are turned on at the same time as the registration roller is turned on. The transfer paper sent out from the second registration roller passes through the fixing roller and is conveyed directly to the intermediate tray.The intermediate tray entrance sensor can detect the number of sheets of transfer paper stored in the intermediate tray. , after detecting the set number of sheets, the operation will stop.

Next, the operation of the first side of multiple copying when an intermediate tray is used will be explained. FIG. 49 is a time chart showing that the intermediate tray flapper is turned on at the same time as the first roller is turned on to form a paper path for conveying the transfer paper to the intermediate tray. When the transfer paper is sent out from the registration rollers and passes the paper discharge sensor section, the reverse solenoid is turned on, similar to the above-mentioned one-sheet double-sided copying.

The transfer paper is switched back and conveyed to be stored in the intermediate tray. At this time, the intermediate tray entrance sensor counts the number of stored sheets, and when the set number of sheets is detected, the operation is stopped.

Next, the operation of the second side of multiplex and double-sided copying using the intermediate tray will be explained. Transfer paper is already stocked in the intermediate tray, and the transfer paper is set from there to the second conveyance section 23. The situation is shown in FIG. 50. First, the intermediate tray paper feed rollanoid is turned on. The paper feed roller 5b is lowered by a drive means (not shown), and the topmost transfer paper is abutted against the feed roller 57. Thereafter, the intermediate tray feed roller solenoid is turned on, and the transfer paper is sent out to the conveyance path 59 by the intermediate tray feed roller 57. When the leading edge of the transfer paper reaches the intermediate tray exit sensor S21, the intermediate tray paper feed roller tread maid is turned off, the paper feed roller 56 rises, and is in a state of non-contact with the transfer paper. The latch turns on, and again.

The above-described operation is started to set the second registration roller 37 to the home position.

The transfer paper eventually reaches the second pre-registration sensor S5, and after a predetermined time from there, the transfer paper hits the second registration roller and forms a loop.

The second registration roller 37 is turned on, and the transfer paper is fed toward the registration roller 12.

The subsequent operations are the same as those for the second side of the single multiplex one-sided copy described above.

Next, the operation of replenishing the black developing device 8 with toner from the hopper will be described. In Fig. 51, 301 is a hopper, 3
02 is a screw that stirs the toner in the hopper 301 and sends it to the black developing device 8, and is driven by the hopper motor 300. Inside the black developing device 8, there is a toner sensor S16 for detecting the presence or absence of toner. A stirring rod 8-b serving as a toner sensor and a developing sleeve 8-a are arranged.

The stirring bar 8-b is driven by a main motor 18 (not shown), and its cycle is 4 seconds. When the toner sensor S16 detects that there is no toner, the hopper motor 300 is rotated to replenish toner. If the toner sensor 51B does not detect the presence of toner even if the hopper motor 300 is driven to a certain extent, it is determined that there is no toner in a part of the hopper, and a display is made.
It is configured to notify the user. This control will be explained in detail.

The control method during copying and when copying is stopped is different, and when copying is stopped, as shown in FIG. 52, if no toner is detected at that time, the hopper motor 300 is rotated for 10 seconds. On the other hand, if the presence of toner is detected at this time, nothing is done.

Next, the control of the hopper motor 300 during copying will be described. Due to the rotation of the stirring rod 8-b, for example, the stirring rod 8-b contacts the toner sensor 516 even though there is no toner.

The toner sensor output may indicate that toner is present. This time is a maximum of 1 second. on the other hand.

Even though there is toner, the stirring rod removes toner particles near the toner sensor 316, so the toner sensor output may indicate no toner. The time during which it is detected that there is no toner is 2 seconds at most. Therefore, as shown in FIG. 53, when the toner out signal continues for more than 1 second,
When the hopper motor 300 is driven and the toner presence signal continues for two seconds or more, it is determined that there is toner in the developing device, the hopper motor 300 is stopped, and a hopper partner no timer, which will be described later, is reset.

On the other hand, when there is no toner in the hopper, no matter how much the hopper motor 300 is rotated, the toner sensor 516 will not detect the presence of toner, thereby detecting the absence of toner in the hopper.

The time that the hopper motor 300 is rotating is measured by a hopper partnerless timer, and when the total time reaches 18 seconds, it is determined that there is no toner in the hopper 300 and a display is displayed. This timer is reset when the power is turned on and This is when the presence of toner is detected during the above-mentioned copying.

Next, the operation of the blanking LED array 14 will be described. This LED array 14 not only prevents toner from adhering to unnecessary areas of the drum 20, but also allows you to create a white area of approximately 2 mm at the leading edge of the transfer paper, and to whiten the area inside or outside the area specified in the area specification mode. (Masking.

trimming). The control timing is taken from the signal from the image tip sensor S2 that detects the position of the optical system 24. A shielding plate 24-a (FIG. 55) is attached to the optical system 24, and a signal is output by blocking the image tip sensor S2. The length of the shielding plate 24-a is 2, and as the optical system advances, a signal is output as shown in FIG. 56. In Fig. 56, the leading edge of the document is exposed to light when the leading edge of the document is exposed to light when the leading edge of the image sensor output is the pre-leading edge signal and the falling edge is the leading edge signal. If the speed of the optical system is V, then te=12
/V. On the other hand, as shown in FIG.
The relationship between D l 4 and the optical axis 305 is that of the blank LED 14
is upstream by one intersection. Therefore, blank control corresponds to the original and if the process speed is Vp, then fL t
/Vp needs to be performed first. First, set the tip margin to 2mm.
The control to be created will be explained. As shown in FIG. 57, the optical system is scanned, and the blank LED 24 is turned off after time t9 from the pre-picture destination signal. Here t9 is t9=12+
2/Vx=11/Vp-(X/Vp. Here, α is 1/2 of the irradiation time of the blank LED 14. By doing this, an appropriate tip margin can be obtained according to each magnification.Optics Even if the system speed VK is high for reduced copying, Ta
So that it does not become a negative value! L2 has been set.

Further, since α does not take a constant value due to variations in the light intensity of the LED array, etc., it can be adjusted from the operation unit as described later.

Next, consider the area specification mode. In FIG. 58, 310 is a document, and the optical system 24 scans in the direction of arrow a. 311 is a copy area 1. For example, the range in direction a is set to 100 mm to 150 mm. In such a case, as shown in FIG. 59, by turning off the blank LED 14 110 minutes after the image tip signal and then turning on the blank LED 14 after a time t11, the image is displayed only in the specified area 311 as shown in FIG. 58. I can put it out.

Here, t10 and t11 are In this case, a desired area can be blank exposed.

On the other hand, in Fig. 58, the part that displays the image is reversed, 31
If the value is other than 1, as shown in Fig. 60, turn off the blank LED 14 after the above-mentioned time t9 from the blurring image tip signal, create a margin at the tip, turn on the blank after time t12 from the 1-picture tip signal, and from there. Turn off the blank after time t13. t12. t13 is as follows.

As described above, when outputting a white image, α/V p is subtracted, and when one image is output, α/V p is added, thereby allowing precise area copying.

Also, as mentioned above, when specifying areas to be copied in different colors at once, in order to prevent color mixing between the two-color toner and the black toner, each area is narrowed down and copied.1 For example, area 311 in Figure 58 is copied in black. , when copying other parts in red, first in black, control is performed as shown in FIG. 59, but t10 is reduced by inn from the above value.

Also, when performing 0th order color copying in which the value of tll is increased by 1 mm from the above-mentioned value, the blank LED 14 is controlled as shown in Fig. 60, but t12 is set smaller than the innn overlap, and t13 is set to the innn overlap. be greater than the value of . This results in a 2mmmm domain area in the black and color areas. Even if the resist shifts slightly, the black and color areas will overlap and no color mixing will occur.

Explanation of the mode setting> Figure 11 shows the copy mode when the power is turned on.

This is a flowchart of processing when the reset key 119 is pressed or after a certain period of time has elapsed after the end of copying (auto clear), and processing for inputting duplex/multiple/page continuous copying mode and area designation mode.

FIG. 12 is a flowchart showing details of 5tepl-1. The contents will be explained below. Since it has a battery for controlling the contents of the RAM, the contents of the RAM are retained even after the power is turned off. For this reason, when the power is turned on, necessary contents of RAM must be retained and unnecessary contents must be cleared (
Step 1-1) and setting the copy mode to standard mode (Step 1-2). This standard mode is the same setting as the standard mode obtained when the reset key 119 is pressed. This standard mode includes, for example, a set number of copies, one copy, one size copy, a black developer, and a lower cassette selection.

Next, it is determined whether there is any key input from the operation unit 100 (
Step-2) Then, it is determined whether the input is related to area registration (Step 1-3), and if the input is related to area registration, the process of Step 5-6 described later is performed.
If reset key 119 is done manually (Stapl-4).

0 double-sided key 107 that performs the process of 5tepl-7, which will be described later.
．． Page snapshot key 106. Multiple key 105, image conversion key 103. Binding margin frame erase key 108 If done manually, the process of 5tepl-7, which will be described later, is performed.

5tepl-6 will be explained. Areas 1, 2, and 3 are registered using the setting method described later.

In that case, the contents of areas 1, 2.3 are stored in the RAM shown at 13th@.

FIG. 14 is a flowchart showing details of 5tepl-7. The contents will be explained below. Set the contents of RAM to set the copy mode to standard mode (St
apl-7-■), and returns the copy mode to standard mode (Stapl-7-2).

When copy mode is set to standard mode, area registration 1,
2.3 is canceled, but the data in the RAM that was registered in the area in step 5tepl-6 is not cleared. This is inconvenient as if the user presses the reset key 119 by mistake, the area registration has to be executed again. occurs. In order to alleviate this problem, the contents of the RAM in which the area is registered are not cleared, and the area registration data is not changed until the next time the area registration is corrected.

FIG. 15 is a flowchart showing details of 5tepl-8. The contents will be explained below.

When the binding margin and frame erase key are done manually (Step-8-1)
, if any of the copy modes 8, 9, and 10.11 described above is selected (Stapl-8-17), the copy mode is canceled (Stapl-8-18).

When using multiple keys manually (St apl-8-2).

If double-sided/page continuous shooting mode is selected (St
epl-8-15), the copy mode is canceled (
Stapl-8-16).

Double-sided key with human power! t (St apl-8-3).

If multiplex/page continuous shooting mode is selected (St
apl-8-13), its copy mode is canceled (
Stapl-8-14).

When using the page quick copy key manually (Step 8-4) If 1 duplex/multiple mode is selected (Step 8-4)
8-11), the copy mode is canceled (Sta
pl-8-12).

The image conversion key is input (Step 8-5),
When the aforementioned copy mode 6 or 7 is selected (St
epl-8-8), if multiple or duplex or page snapshot is selected (Stapl-8-9), multiple
Canceling double-sided/page continuous shooting mode (Stapl-8-
10).

Also, an image conversion key is input (Stepl-
8-5), when the above-mentioned copy mode 6 or 7 is not selected (that is, either copy mode 8.9 or 10.11 is selected (Sta pl-8-6)
), If the edge margin or border erase mode is selected (Step 1-8-7), the copy mode is canceled (Stapl-8-8) - As described above, the copy mode interlock (When a certain mode is selected, the previously selected mode is canceled.)

Items that are not in an interlock relationship mean that a combination of copy modes is possible. For example, a combination of duplex and any of copy modes 8, 9, 10, and 11, or a combination of duplex and copy modes 8, 9, 10, and 11, or multiplex and copy modes 8 and 9. ,10. You can combine any of the following. This provides a color, multiplex or duplex copy output with masking or cropping.

Explanation of Density Correction> By the way, the following two methods are generally used in copying machines to optimally set the copy density.

The first method is to set the amount of lamp light for exposing the document to a predetermined value, and the second method is to set the value of the developing bias to a predetermined value.

By the way, what is the rational way to manage these values?

It is preferable to store data on the optimum combination at the time of shipment in a non-volatile data memory within the copying machine, and to adjust the copy density so that the user himself/herself adjusts the exposure dial according to the user's preference. On the other hand, if the process conditions change over time and the actual copied image does not reach the standard density even if the exposure dial is set to the center (standard density value), the configuration should be such that the developing bias value can be corrected. .

However, if the lamp light amount and the developing bias value are stored, for example, in the data RAM, it is necessary to display what value is currently set when adjusting the lamp light amount or the developing bias value. However, unnecessarily increasing the number of display LEDs in the operation display section of a copying machine is inconvenient in terms of cost and also leads to a decrease in operability. Therefore, in this embodiment, the developing bias value can be displayed in the exposure amount display segment, and the former is lit and the latter is blinked to make a distinction.

A method of adjusting the exposure amount and developing bias value in this embodiment will be explained using FIGS. 66 to 69.

In FIG. 66, reference numeral 403 is a three-digit segment display corresponding to the magnification display 154 shown in FIG.
It is also possible to display Bis. Further, 404 is a density display LED 162, 406, 407 is a copy density adjustment key 114, 405, 408 is a copy density correction key 115.
correspond to each. 401 and 402 are data RAMs for each data stored in a data ROM 440, which will be described later.
441 is a data transfer key for storing the data, and 409 is a light-off key for turning off the developing bias value blinking on the density display LED 404.

The keys 401, 402, and 409 may be provided on the operating section shown in FIG. 3, but since they are not normally used, they are preferably provided inside the copying machine.

Fig. 67 shows the data RAM 441 used for adjusting the exposure amount or developing bias value, and each numerical value in Fig. 1 indicates each data value on the data RAM area backed up by a lithium battery. -CNT is the exposure correction index, L-INT is the lamp control voltage value corresponding to the exposure correction index, and L-DAC is the value of L-I NT.
This shows an area for storing scale-converted values to be set in the bit D/A converter. Similarly, D-
CNT is L-CNT.

D-Bis is a data table of developing biases corresponding to L-INT and D-DAC corresponding to L-DAC, respectively.

Further, FIG. 68 shows a data ROM 440 for storing standard data regarding exposure amount and developing bias value, and each area L, -C of this data ROM 440 is shown in FIG.
The NT-D-DAC is connected to each area L- of the data RAM 441.
Compatible with CNT-D-DAC.

Further, each data in the data ROM 440 is set in advance as standard data in order to obtain the optimum copy density, for example, when the copying machine is shipped. All standard data in data ROM 440 is copied to data RAM 441 by pressing data transfer key 402. Also, if you press the data transfer key 401.

Areas L-CNT and D-CNT of data ROM 440
Only the standard data stored in the data RAM 441
copied to the same area of

The aforementioned control unit 60 controls the data RA when executing a copying operation.
The exposure amount and development bias value are determined based on each data stored in M441. FIG. 69 shows a circuit for setting the lamp control voltage value and developing bias voltage value stored in the memory L-INT and D-Bis of the data RAM 441 to the light amount control circuit CVR (not shown) and the high voltage generator (IVT). To explain FIG. 0, when the copy key is turned on and the copying operation is started, the control unit 60 controls the lamp control voltage and The developing bias voltage value is scale-converted to 8-bit data, and set in the areas L-DAC and 0-DAC, as well as in the pulse width modulator 442. The output of the pulse width modulator 442 is converted into DC by a filter 443, and is supplied to the light amount control circuit CVR and the high voltage generator HVT via a buffer amplifier 444.

Next, a method of adjusting the exposure amount and developing bias value in this example will be explained.

When the copy density adjustment key 406 or 407 is pressed, the value of the area L-CNT of the data RAM 441 is set to -1' or +t, and one of the segments (404) corresponding to the value of the area L-CNT shifts its lighting. To go.

At the same time, a predetermined value is subtracted or added to the area L-INT of the data RAM 441, and when the data transfer key 402 is pressed, all data in the data ROM 440 is transferred to the data RAM 4.
41, and each area of the data RAM 441 has, for example, L-CNT=8. Each standard value such as L-INT=75 is written, and on the segment 404, the area D-C
The part corresponding to the NT value "8" flashes. At the same time, on the segment display 403, area D-B
The value of is "180" is displayed. Then, when the copy density correction key 405 or the key 408 is pressed, the value of the area D-CNT of the data RAM 441 is changed to "°°-1°".
Alternatively, one of the segments) 404 corresponding to the value of the area D-CNT is shifted by blinking. At the same time, a predetermined value is subtracted or added to the area D-Brs of the data RAM 441. It will continue to be
The segment 404 performs a blinking operation when adjusting the developing bias value in order to distinguish it from the exposure amount adjustment.
Segment 404 is copy density correction key 405.408
When is pressed, a blinking operation is performed, and when a copy density adjustment key 408, 407 is pressed, a lighting operation is performed. Furthermore, if the blinking operation and the lighting operation overlap, the lighting operation takes priority.

In this example, the blinking of the segment 404 can be turned off using the lights-off key 9, but even if the lights-off key 9 is pressed during the lighting operation, the segment 404 will not be turned off.
Also, when the copy density correction keys 405 and 408 are pressed, the area D of the data RAM 441 is displayed on the 1 magnification display 403.
-Bis value, that is, the developing bias voltage value is displayed.

Note that this display returns to the original magnification display when the copy key is pressed. To explain an example of adjustment in detail,
First, data RAM 4 is transferred by pressing the data transfer key 402.
41 is initialized, the standard voltage value of the developing bias is displayed on the segment display 403 as "180", and the standard value on the segment 404 is "8".

The corresponding part will be displayed blinking. Next, use the copy density correction keys 405 and 408 so that the standard original has an appropriate density.
You can operate as appropriate.

As explained above, in this embodiment, the display for the shift amount of the developing bias is also used as the display for adjusting the exposure amount, so that the developing bias can be easily adjusted without providing an extra display that is not normally used. can be done.

Description of automatic paper selection mode> Next, we will explain the automatic paper selection mode (
(hereinafter referred to as APS mode) will be explained using FIG. 70.

The copying machine of this embodiment can be equipped with multiple cassettes (paper sizes), and has an AP function that automatically selects the most suitable paper cassette according to the set original size and the specified magnification ratio.
Key 411 in Figure 0, which has S mode. LED
412°413.414,415,416. key 417
Each of the keys 124°LEDL shown in FIG.
65, 156, 157, 158, 159, corresponding to key 113.

In FIG. 70, a key 411 is a key for selecting and canceling the APS mode, and a 0 display section 414 whose selection status is displayed by an LED 412 is for displaying all cassette sizes currently installed. be. Further, a bar LED 413 indicates the currently selected size among the sizes displayed by the LED 414. However, if there is no paper in the cassette of the selected size, the LED 413 will not light up. An LED 415 indicates which cassette loading port (including the manual feed port) is currently selected, and an LED 416 lights up when there is no paper in the selected cassette. 417 is a cassette selection key, and each time the key 417 is pressed, the LED 415 changes to 1.
The lighting will shift from bottom to top one by one.

In the copying machine of this embodiment, when the cassette selection key 417 is pressed after the APS mode is selected, the APS mode is canceled and the LED 412 is turned off. If the copy key is pressed and the document pressing plate 34 is open, the document size cannot be detected, the APS mode is canceled, and paper is fed from the lowest cassette.

By the way, the copying machine of this embodiment deals with various inconveniences that may occur when selecting the APS mode, such as when the optimal paper cassette to be selected does not exist if it falls over, or when the document size cannot be detected due to some circumstances. It is configured so that it can be done.

Hereinafter, a method to deal with the case where the APS mode cannot be executed smoothly will be explained.

(1) When the document size cannot be detected --- Release the APS mode and select a predetermined priority cassette (for example, the lowest cassette).

(2) When power is turned on, auto clear temporary, reset key 1
When pressing 19, if a plurality of paper cassettes are not installed, the APS mode is canceled and the only installed cassette is selected.

(3) When no cassette is installed, the APS mode is canceled and a paper out display (LEo 416 lit) is displayed with a predetermined priority cassette selected.

(4) When only one paper cassette exists and a cassette loading port with no cassette is selected (while the paper fish is being displayed by the LED 416).

When the APS key 411 is pressed, the APS and LED 412 are turned on at the timing of the press, the only existing cassette is selected as the primary one, and the out-of-paper display is turned off, and then the APS LED 412 is turned off and the APS mode is canceled. do.

Explanation of Memory Diagnosis> Next, a nonvolatile data memory diagnosis method in this embodiment will be described with reference to FIGS. 71 to 73.

The copying machine of this example has a nonvolatile data memory 421,
Various control constants 1 such as high voltage output values, exposure voltage values, registration correction values, etc. are stored in the memory area, and these control constants are read out as appropriate to execute the copying operation.

Furthermore, the copying machine of this embodiment has a function of diagnosing whether or not each data read from the non-volatile data memory 421 as described above is correct. , further increasing the reliability of the device.

In FIG. 71, 421 is a static RAM (nonvolatile data memory) with a standby function for storing various control constants, and 423 is a CPU that performs various controls such as sequence control based on the data stored in the RAM 421. (Responsible for the control unit 60 in Fig. 2.)
, 422 are lithium batteries, which are used as a backup power source for the RAM 421. Power supply 5v is RAM4
21, T=0 and RAM4
21 becomes accessible by the CPU 423, but when the 5V power is cut off by turning off the power switch, etc., 111 becomes high level and the RAM 42
A holding current is supplied from a lithium battery 422 to VDD of No. 1. As a result, even if the current is interrupted, the RAM
The data of 421 will be held by the lithium power supply 422.

Also, in one example, the output voltage of lithium battery 422 can be monitored by microprocessor (CPU) 423 when power supply +5V is active.

In FIG. 72, 428 is a parallel I10 port connected to the CPU 423, and the latching relay 426 can be driven by its output. On the other hand, latching relay 4
The status of 26 is read by the CPU 423 via the parallel I10 port 428 mentioned above.

Further, 427 is a button switch for releasing the latching relay 426, which is used when it is desired to initialize the data RAM 421.

Next, the backup power supply 422 and RAM 42 are executed by the CPU 423 using the flowchart in FIG.
The diagnostic operation No. 1 will be explained in detail.

First, in step 430-1 when the power is turned on, the CPU 42
Data retention power supply 4 connected to the A/D conversion input terminal of 3
The voltage of 22 is compared with a reference value (for example, 3.OV), and if it is lower than the reference value, the process moves to step 430-6, a data error is displayed, and the user is requested to take action.

Further, if the voltage of the data holding power supply 422 is equal to or higher than the reference value in step 430-1, the process moves to step 430-2, and it is determined whether the latching relay 426 is on.

When the input of latching relay 426 is off, the process moves to step 430-3 and the data stored in advance on ROM is copied to a predetermined area on RAM 421. Then, it is determined whether or not the copied data can be completely read out from the RAM 421 using the output from the ROM (step 430-4).
1 is determined to be normal, the coil of the latching relay is energized in step 430-5.

If the latching relay is turned on in step 430-2, it is assumed that initialization has already been performed, and the process moves to step 430-4, where data at a predetermined address in the RAM and data at a predetermined address in the ROM are combined. They are compared, and if they match, it is determined that the RAM 421 is normal.

[Effects] As explained above, according to the present invention, the boundary between the image area and the non-image area becomes clear, and the image is not adversely affected.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a copying apparatus to which the present invention can be applied; FIG. 2 is a schematic block diagram showing the configuration of the apparatus shown in FIG. 1;
FIG. 3 is an external view showing the operation panel of the device shown in FIG. 1;
Figure 4-1 is a diagram showing an LED array and its driving circuit;
Figure 4-2 is a diagram showing the irradiation of the LED onto the drum.
-3 is a diagram showing the lighting timing of the LED. Figure 5-1 is a diagram showing the configuration of the editor, Figures 5-2 and 5-3 are equivalent circuit diagrams when specifying the X and Y directions of the editor, and Figure 6 (a) is from a single-sided original. The figure which shows the output example of double-sided copying. FIG. 6(b) is a diagram showing an output example of page quick copy double-sided copying, FIG. 6(C) is a diagram showing an output example of multiple copying, and FIG. 6(d) is a diagram showing an output example of page quick copying multiple copying. Figure, 6th
Figure (e) is a diagram showing an output example of page continuous color multiplex copying. FIG. 7 is a diagram showing an example of output in image conversion mode. Figures 8 to 10 are flowcharts showing the sequence when toner is out, Figures 11 to 15 are flowcharts showing the initial copy mode input processing, and Figures 16 to 21 are input data from the editor. 22 is a diagram showing the data storage RAM for controlling the LED array, FIGS. 23 and 24 are flow charts showing the control of the LED array, and FIGS. 25 and 26 are the strong lighting timing of the LED. Figure 27 shows LE
Figures 28 and 29 showing the erased state by lighting D.
The figure shows an output example of specifying multiple areas, Figure 30 shows another example of the editor, Figure 31 shows a memory for storing area data, and Figures 32 and 33. 34 is a flowchart showing the copy operation when specifying an area.
35 and 35-1 are diagrams showing examples of output of region designation. Figures 36-wIJ46, Figures 48-50. FIGS. 52, 53, 55 to 57. 59 and 60 are diagrams showing the operation timing of each part of the apparatus, FIG. 47 is a diagram showing an outline of the second paper feeding section, and FIG.
The figure shows the configuration of the developing unit, Figure 54 shows the LED array and exposure position, Figure 58 shows the blank exposure timing, and Figure 61 shows the configuration of the automatic document feeder. The cross-sectional view, FIG. 62, and FIG. 62-1 are diagrams showing a copying operation when the automatic document feeder is used. Figure 63 shows copy 1 based on transfer paper size and number of copies.
FIG. 64 is a diagram for explaining area designation using keys, and FIG. 65 is a diagram showing the position of the base pointer. 66 is a detailed view of the part related to density adjustment in the operation display section shown in FIG. 3, FIG. 67 is a view showing the data RAM 441, FIG. 68 is a view showing the data ROM 440,
FIG. 9 is a circuit diagram for setting the lamp control voltage value and developing bias voltage value in the light amount control circuit CVR and the high voltage generator HVT, FIG. 70 is a diagram for explaining the APS mode in this embodiment, and FIG. 71 ~Figure 73 shows RAM42
1 is a circuit diagram and a flowchart for explaining the diagnostic operation of FIG. M1 Ming B Ling Hao (8) Yi Wanki Bushi 1 Shio San Copy No. 11f BJ 躬2/7庬28Figure 250-4 251)-5滲6 ? 51)-72! ;D
-11L J and 5-do No. 3-10 3rd °-no 5 (ri 0 @Main S%f/
Bug Cma 1
1 Mama f2 Figure 47 = Figure 45 Figure 46 (2) yo≠ = ; = Figure 50 Tomb 12! Regiztro-y
c=: Boutokuji 5 Sufurashiu 29 (t-Nodoguri-I-屹ngo 11 Juoka Mii 5th Yumioki 6'2-11 Fox 630 L JL
Jr1 2I423 躬73Figure 6 Procedure amendment document February 20, 1985 Mr. Michibu Uga, Commissioner of the Patent Office: I:
'+';■, Indication of the case Patent Application No. 258117 of 1985 2) Name recording device of the invention 3, Person making the amendment Relationship with the case Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name Hoo )
Canon Co., Ltd. Representative: Noh Kaku 3, Department 4, Agent address: 3-30-25 Shimomaruko, Ota-ku, Tokyo 148, Specification subject to amendment 6, Contents of amendment (1) The entire text of the specification is as attached. I will correct it.

Claims (3)

[Claims] (1) A plurality of dynamically lit illumination bodies for erasing the latent image on the photoconductor; and a control means for controlling the illumination bodies in accordance with the width direction and rotational position of the photoconductor. . A recording apparatus characterized in that the control timing of the illumination body is synchronized to a position unrelated to the image in the width direction of the photoconductor. (2) A recording apparatus according to claim 1, characterized in that the illumination body is controlled in accordance with area designation of a document. (3) The recording apparatus according to claim 1, wherein the illumination body corresponding to the unused portion of the photoreceptor is lit statically.