JPH05257207A - Image forming device - Google Patents

Abstract

PURPOSE:To easily positioning an original and further, to reduce a working time and the frequency of erroneous copies. CONSTITUTION:This image forming device is provided with a back light mode key (arranged in a control part 300) setting the back light mode operating only an optical system 401, a mode starting key (arranged in the control part 300) inputting a signal of starting the execution of the back light mode and a control part 400 for operating only the optical system 401 when the back light mode is set and the signal of starting the execution of the back light mode is inputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus having an optical system including a scanner having an exposure lamp, a mirror and the like, and more particularly to a fixed platen type slit exposure type image forming apparatus.

[0002]

2. Description of the Related Art Conventionally, in an image forming apparatus having an optical system including a scanner equipped with an exposure lamp, a mirror, etc., a document surface is set face down and set on a contact glass, and a predetermined copy start key is depressed. When a copy start is instructed, a scanner equipped with an exposure lamp, a mirror, etc. operates to scan the original on the contact glass and guide the reflected light to an image forming system to form an image.

[0003]

However, according to the image forming apparatus having the optical system including the scanner having the conventional exposure lamp, mirror, etc., when the document is set on the contact glass, the document surface faces downward. Since the operator can see only the back side of the original, for example, when you want to copy only a part of the original on a transfer paper smaller than the original, or when you want to copy the figures, graphs, etc. on the original. When copying to a specific position on the transfer paper, there is a problem that it is very difficult to align the document. Therefore, there are problems that the working time becomes long and that miscopy easily occurs.

The present invention has been made in view of the above, and it is an object of the present invention to easily align a document, shorten the working time, and reduce miscopy.

[0005]

In order to achieve the above object, the present invention provides an image forming apparatus having an optical system including a scanner having an exposure lamp, a mirror and the like, a back-up for operating only the optical system. When the backlight mode setting means for setting the light mode, the input means for inputting the start of execution of the backlight mode, and the backlight mode are set, and the start of execution of the backlight mode is input, , An image forming apparatus provided with a control means for operating only the optical system.

Further, in addition to the above-mentioned structure, a scanner position detecting means for detecting the position of the scanner is provided, and the control means, when the scanner position detecting means detects that the scanner reaches a predetermined position after driving the scanner. An image forming apparatus is provided in which the scanner is stopped for a certain period of time while the exposure lamp is on, and then the exposure lamp is turned off to return the scanner to the home position.

Further, in addition to the above-mentioned structure, a cancel input means for inputting cancel of the backlight mode is provided, and the control means, when the scanner is stopped for a predetermined time while the exposure lamp is in the ON state, the cancel input means. An image forming apparatus for turning off the exposure lamp and returning the scanner to the home position when the cancellation of the backlight mode is input by.

[0008]

In the image forming apparatus of the present invention, when a document is set on the contact glass, the backlight mode is set by the backlight mode setting means, the document surface is set downward, and the backlight mode is set by the input means. When the start is input, the control means activates only the optical system. At this time, the operator confirms the content of the document surface from the back side with the light of the exposure lamp, and performs more accurate alignment.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A copying machine to which an image forming apparatus of the present invention is applied will be described below as an embodiment with reference to the drawings.

FIG. 1 shows the structure of a copying apparatus 100 of the first embodiment, which comprises an exposure lamp 102 for irradiating a document placed on a contact glass 101 with light and an exposure lamp 102 reflected by the document. A first mirror 103 and a second mirror 10 for guiding reflected light to a photosensitive drum 110 described later.
4, third mirror 105, lens 106, fourth mirror 10
7, a fifth mirror 108, a sixth mirror 109, a photosensitive drum 110 that receives reflected light to form an electrostatic latent image, a color developing unit 111 that color develops the electrostatic latent image with color toner, and a black color A black developing unit 112 for developing a black electrostatic latent image with toner, and a photosensitive drum 1.
A charging charger 113 for uniformly charging 10; a transfer charger 114 for transferring the toner image on the photoconductor drum 110 to a transfer paper; a separation charger 115 for separating the transfer paper from the photoconductor drum 110; A cleaning unit 116 for removing the residual toner remaining on the photosensitive drum 110 and a fixing device 117 for fixing the toner image on the transfer paper by heat fixing are provided. Also,
Although detailed description is omitted, it is provided with a plurality of paper feed cassettes, has a reverse conveyance path, and is capable of double-sided copying.

FIG. 2 shows the structure of the optical system of the copying apparatus 100. The optical system 401 (see FIG. 4) is composed of a first scan 201, a second scanner 202, and a scanner drive motor 203. The exposure lamp 102, the first mirror 103, and the second mirror 10 described above are included in the first scan 201.
4, and a third mirror 105 are mounted, and the second scanner 202 has a fourth mirror 107 and a fifth mirror 108.
Is installed. Further, in the figure, S1 indicates a scanner HP detection sensor for detecting that the first scanner 201 is at the home position (HP). Further, the scanner drive motor 203 is in the stepping mode,
The moving amount N ₀ of the first scanner 201 is detected by the number of pulses of the stepping motor.

FIG. 3 shows the operation section 300 of the copying apparatus 100, which is a ten-key pad 3 for inputting numerical values such as the number of copies.
01, a backlight mode key 302 for setting a backlight mode for operating only the optical system, a mode clear key 303 for clearing various modes, a mode start key 304 for inputting the start of various modes, and the like. ..

FIG. 4 is a control block diagram of the copying apparatus 100 according to the first embodiment. The control unit 400 controls the optical system 401, the image forming system, and the transport system 402 according to the input from the operation unit 300.
Control. Further, the detection signal of the scanner HP detection sensor S1 is input.

The operation of the above configuration will be described with reference to the flow charts shown in FIGS. FIG. 5 shows a flowchart of the backlight mode determination process in the control unit 400. First, when the backlight mode key 302 of the operation unit 300 is turned on (S101) and then the mode start key 304 is turned on (S102), it is determined that the backlight mode is selected and the execution start is input. The backlight mode routine is executed (S103). On the other hand, when the backlight mode key 302 is not turned on, or the backlight mode key 3
When the mode clear key 303 is turned on after 02 is turned on, it is determined that the backlight mode is not selected, and the backlight mode determination process is ended.

FIG. 6 shows a flowchart of the backlight mode routine. First, the exposure lamp 102 is turned on (S201), and the first scanner 201 is moved forward (S202). Here, the first scanner 201
When the movement amount N ₀ of the object reaches a preset value N (S2
03), the first scanner 201 is retracted (returned) (S204), and when the scanner HP detection sensor S1 detects that the scanner HP has returned to the home position, the processing is ended (S205).

By the above processing, for example, when it is desired to copy only a part of an original onto a transfer paper smaller than the original, or to copy a figure, a graph, etc. on the original onto a specific position on the transfer paper, the operator By operating the backlight mode, only the optical system can be operated, and the contents of the document surface on the contact glass can be confirmed from the back surface by the light of the exposure lamp 102, and accurate alignment can be performed.

In the first embodiment, the backlight mode key 30 dedicated to the backlight mode setting is provided on the operation unit 300.
2 is provided, for example, as shown in FIG. 7, by pressing a plurality of keys in the order of a mode clear key, a clear stop key, a numeral confirmation key, and a numeral confirmation key, the backlight mode is changed. It may be set.

Further, as a second embodiment, the backlight mode routine shown in FIG. 8 is used in place of the backlight mode routine of the first embodiment (see FIG. 6) to drive the first scanner 201 and then the first scanner 201. When detecting that 201 has reached a predetermined position, the first scanner 201 is stopped for a certain period of time while the exposure lamp 102 is in the ON state, and then the exposure lamp 102 is turned off to return the first scanner 201 to the home position. You can

Specifically, first, the voltage of the exposure lamp 102 is adjusted to V ₀ that can obtain an appropriate amount of light as a backlight (S301), and the exposure lamp 102 is turned on (S3).
02), the first scanner 201 is moved forward (S303). Here, when the movement amount N ₀ of the first scanner 201 reaches a preset setting value N (S304),
The movement of the first scanner 201 is stopped (S305), and the first
The stop time T ₀ of the scanner 201 is compared with a preset time T, and when T ₀ becomes larger than T (S30
6), the exposure lamp 102 is turned off (S307), and the first scanner 201 is retracted (return) (S30).
8) When the scanner HP detection sensor S1 detects that the scanner HP has returned to the home position, the process ends (S).
309).

As described above, since the exposure lamp 102 is turned on while the first scanner 201 is stopped for a predetermined time, it becomes easier to position the original document as compared with the first embodiment. Further, the workability can be improved by stopping the first scanner 201 near the center of the document for a predetermined time.

Further, as shown in FIG. 9, the above-mentioned stop time T ₀ can be set (or changed) by combining a plurality of keys, and an operator can arbitrarily set it to improve workability. be able to.

Further, as a third embodiment, the mode clear key 303 is used as a cancellation input means for inputting cancellation of the backlight mode, and the backlight mode routine (see FIG. 6) of the first embodiment is replaced with FIG. After detecting that the first scanner 201 has reached a predetermined position after driving the first scanner 201 by using the backlight mode routine shown, after stopping the first scanner 201 for a certain period of time while keeping the exposure lamp 102 in the ON state. The mode clear key 303 is pressed when the exposure lamp 102 is turned off and the first scanner 201 is returned to the home position, and the first scanner 201 is stopped for a certain period while the exposure lamp 102 is on. And the exposure lamp 10
2 may be turned off and the first scanner 201 may be returned to the home position.

Specifically, first, the voltage of the exposure lamp 102 is adjusted to V ₀ that can obtain an appropriate amount of light as a backlight (S401), and the exposure lamp 102 is turned on (S4).
02), the first scanner 201 is moved forward (S403). Here, when the movement amount N ₀ of the first scanner 201 reaches a preset setting value N (S404),
If the movement of the first scanner 201 is stopped (S405) and the clear key 303 is not pressed (S406), the stop time T ₀ of the first scanner 201 and the preset time T are set.
And when T ₀ becomes larger than T, the exposure lamp 1
02 is turned off (S407, S408), the first scanner 201 is retracted (returned) (S409), and the process is ended when the scanner HP detection sensor S1 detects that the home position has been returned (S410). On the other hand, when the clear key 303 is pressed after the first scanner 201 is stopped (S406), the exposure lamp 102 is immediately turned off (S407, S408), and the first scanner 20 is turned off.
1 is set back (return) (S409), and the scanner HP
When the detection sensor S1 detects the return to the home position, the process ends (S410).

As described above, by providing the means for canceling the backlight mode in the state where the first scanner 201 is stopped for a predetermined time, the time from the stop of the scanner to the end of the alignment of the document can be shortened, Workability can be improved.

[0025]

As described above, the image forming apparatus of the present invention is an image forming apparatus having an optical system including a scanner equipped with an exposure lamp, a mirror and the like, and a backlight mode for operating only the optical system is set. A backlight mode setting means for setting, an input means for inputting the start of execution of the backlight mode, and the optical system when the backlight mode is set and the start of execution of the backlight mode is input. Since only the control means for operating only the document is provided, the position of the document can be easily adjusted, and the working time and the miscopy can be reduced.

Further, in addition to the above-mentioned configuration, a scanner position detecting means for detecting the position of the scanner is provided, and the control means, after the scanner is driven, when the scanner position detecting means detects that the scanner has reached a predetermined position. , After the scanner is stopped for a certain period of time while the exposure lamp is on, the exposure lamp is turned off and the scanner is returned to the home position.
It is possible to reduce working time and miscopy.

Further, in addition to the above-mentioned structure, a cancel input means for inputting cancel of the backlight mode is provided, and the control means, when the scanner is stopped for a predetermined time while the exposure lamp is in the ON state, the cancel input means. When the cancellation of the backlight mode is input by, the exposure lamp is turned off and the scanner is returned to the home position.
Furthermore, the position of the originals can be easily adjusted, reducing the work time,
It is possible to reduce miscopy.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of a copying apparatus according to a first embodiment.

FIG. 2 is an explanatory diagram showing a configuration of an optical system.

FIG. 3 is an explanatory diagram showing an operation unit.

FIG. 4 is a control block diagram of the copying apparatus according to the first embodiment.

FIG. 5 is a flowchart of a backlight mode determination process.

FIG. 6 is a flowchart of a backlight mode routine of the first embodiment.

FIG. 7 is an explanatory diagram showing another backlight mode setting method.

FIG. 8 is a flowchart of a backlight mode routine according to the second embodiment.

FIG. 9 is an explanatory diagram showing a method of setting a stop time T ₀ .

FIG. 10 is a flowchart of a backlight mode routine according to a third embodiment.

[Explanation of symbols]

100 Copier 102 Exposure Lamp 201 First Scan 202 Second
Scanner 203 Scanner drive motor 401 Optical system S1 Scanner HP detection sensor

Claims (3)

[Claims] 1. An image forming apparatus having an optical system including a scanner equipped with an exposure lamp, a mirror, etc., and a backlight mode setting means for setting a backlight mode for operating only the optical system, and the backlight mode. And input means for inputting the start of execution of the backlight mode, and control means for activating only the optical system when the backlight mode is set and the start of execution of the backlight mode is input. Image forming apparatus. 2. A scanner position detection means for detecting the position of the scanner is provided, and the control means drives the scanner,
When the scanner position detection means detects that the scanner has reached a predetermined position, the scanner is stopped for a certain period of time while the exposure lamp is in the ON state, and then the exposure lamp is turned off to return the scanner to the home position. The image forming apparatus according to claim 1. 3. A cancel input means for inputting cancel of the backlight mode is provided, and the control means is operated by the cancel input means when the scanner is stopped for a predetermined time while the exposure lamp is in an ON state. 3. The image forming apparatus according to claim 2, wherein the exposure lamp is turned off and the scanner is returned to the home position when the cancellation is input.