JPH0444464A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To provide a copy mode in which a received picture read at a sender side is reproduced with fidelity to the facsimile equipment by providing a control means revising a image forming characteristic in an image forming section depending whether the image forming is based on a reception signal or a read signal to the facsimile equipment. CONSTITUTION:A switching signal is outputted from a CPU 71 depending whether the facsimile equipment is set to the reception mode or the copy mode thereby selecting a switch 116. When the facsimile equipment is set to the reception mode, a switch 112 is switched in response to a dot size discrimination signal from a picture mode detection section and when the copy mode is set, a switch 115 is selected by a dot size switching signal from the CPU 71. Thus, the setting of resistance values 110,113 differs from the copy mode and the reception mode and the setting of the comparison voltage is different. As a result, a dot size is switched.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and more particularly to a facsimile machine having a copy mode in which an image read by a reading unit is created in a storage unit of the same device and output.

[Prior Art] In a conventional facsimile machine having a copy mode, when the facsimile machine is set to the copy mode, the facsimile machine operates as a digital copier.

[Problem to be Solved by the Invention] In a facsimile device having a copy mode, when the device is set to the copy mode, data processing of the read image is performed according to the resolution and halftone expression characteristics of the reading device and the recording device. The image is created using the optimum dot diameter.

On the other hand, in facsimile mode, images are output based on the sent data at the resolution and gradation specified by the standard, but the sent image data is not dependent on the performance or density characteristics of the receiving recording device. This is unrelated, so if you create an image with the same dot diameter as in copy mode, the image read on the sending side will not be faithfully reproduced, and for example, the density of the halftone image will be reproduced darker than the optimum density. In addition, line images in text images consisting mainly of characters may become thin or broken, making them difficult to read.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a facsimile device having a copy mode that can faithfully reproduce a received image read on the sending side. With the goal.

[Means for Solving the Problems] An image reading unit and an image forming unit according to the present invention are provided, and an image is formed by the image forming unit based on a received signal from a communication line and a read signal from the image reading unit. The facsimile apparatus has a control unit that changes the image forming characteristics in the image forming section depending on whether the image is formed based on a received signal or a read signal.

[Operation] In the facsimile apparatus according to the present invention, the image forming characteristics in the image forming section are changed depending on whether the image is formed based on a received signal or a read signal.

[Example] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a document reading section 1 for transmission and a printing section 11 for reception of a laser facsimile device capable of copying operations.
FIG.

In the document reading section 1, the document on the platen 2 is irradiated with a light source 3 and a scanner 4 moves to scan the document. The light reflected from the original is reflected by a mirror, passes through a lens 5, and enters a linear CCD sensor (for example, 8 pixels/mm) 6. The output signal of the linear CCD sensor 6 is digitized as explained later, and then binarized. Note that if reading is performed using a moving document type, the configuration becomes simpler.

In the printing unit 11 , a laser optical system 12 controls the light emission of a laser diode in response to a received signal, and the light is incident on a photoreceptor 13 . Then, development, transfer, and fixing are performed using a well-known electrophotographic process, and the received signal is printed on plain paper.

The contents of the reading and printing operations described above are similar to those of conventional laser printers, so a detailed explanation thereof will be omitted.

Next, an outline of the operation of the facsimile machine will be explained with reference to FIG. First, the operation when making a call will be explained. The photoelectric conversion section 31 including the linear CCD sensor 6 of the reading section 1 converts the original into an electrical signal. Next, the converted electrical signal is subjected to predetermined binarization processing (dither processing, etc.) by the processing unit 32, and is converted into a binarized time series signal. Next, the data is encoded by the compression unit 33 using a method such as MH or MR. Next, the encoded signal is stored in the code memory 3
It is accumulated in 4. The transmission control unit 35 establishes a connection with the called party, and sends the signal in the memory 34 to the line through the line connection unit 36 according to a predetermined procedure.

Next, the operation at the time of reception will be explained. Line connection section 36
When the transmission control section 35 receives a connection request from the calling side through the transmission control section 35, the line is connected, a signal is received, and the signal is stored in the code memory 34.

The expansion section 37 decodes the signal in the code memory 34, and the decoded signal is converted into a signal that can be output by the recording section 38. The page memory 40 temporarily stores this signal. The image mode detection unit 41 looks at the expanded white and black image sequences and determines whether the expanded image is a text image or a halftone image. Details of this content will be described later. The image data stored in the page memory 40 is sent to the recording section 38, and the recording section 38 forms an image on paper based on this image data.

Next, the operation in copy mode will be explained with reference to FIGS. 1 and 2. Linear CCD sensor 6 of reading section 1
A document is converted into an electrical signal by a photoelectric conversion unit 31 including the following. Next, a predetermined binarization process (dither process, etc.) is performed by the processing unit 32, and the signal is converted into a binarized time series signal. Then, it is recorded by the recording section 38.

Next, the operation in management report output mode will be explained. When the management report key 56 (see FIG. 3) for creating a management report, which will be explained later in FIG. It is expressed in a character font stored in the ROM. It is transferred to the page memory 40 and output as a management report via the recording section 38.

Note that the control section 39 processes the above signals in response to instructions from the operation display section 51.

FIG. 3 is a plan view showing the operation display section 51. FIG.

The transmission key 52 is a key for starting transmission. 5
The TOP key 53 is a key for stopping transmission midway. Various keys (rlJ, r2J...r9J, rOJ
, r*J, r#J) 54 is for setting and clearing the telephone number.
This is the key used during registration.

The halftone key 58 is a key that is read during copying or transmission to select whether to perform image binarization processing or halftone processing (dither processing). The copy key 57 is a key to start copying the original. The management report key 56 is for sending,
This key starts outputting received data such as time, telephone number, number of sheets, etc. in the form of a list.

FIG. 4M is a circuit diagram of the CPU 71 that controls the facsimile machine. The CPU 71 is connected to a working RAM 72 and a timer clock IC 73.

Further, the CPU 71 is connected to the key matrices 52 to 58 of the operation display section 51, the LCD display section 59, and each control section (see FIG. 2).

I. First Embodiment Next, referring to FIGS. 5A and 5B, the first embodiment according to the present invention will be described.
The operation of the facsimile machine according to the embodiment will be explained.

In the first embodiment of the invention, the dot size of the dots forming the image is switched between the reception mode and the copy mode.

Also, when receiving data, it automatically determines whether it is a halftone image or a text image based on the received data, and if it is a halftone image, the dot diameter is set to be smaller so that the density of the image can be faithfully reproduced. In addition, in the case of a text image, the dot diameter is set to be large so that characters and the like can be clearly reproduced without the line image being too thin or broken.

On the other hand, in the copy mode, the operator can change the dot diameter and freely set the image density by operating the keys on the operation panel.

FIG. 5A is a block diagram of a switching circuit that switches the dot size according to the mode and type of image, and FIG. 5B is a timing chart of the circuit shown in FIG. 5A.

Referring to FIG. 5A, a switching signal is output from CPU 71 depending on whether the facsimile machine is in reception mode or copy mode, and switch 116 is switched accordingly. When the facsimile machine is in receive mode,
A switch 112 is switched in response to a dot size determination signal from the image mode detection section 41, and a switch 115 is switched in response to a dot size switching signal from the CPU 71 in the copy mode. Therefore, each resistance value is 110.113 in copy mode and reception mode.
settings are different, and comparison voltage settings are different. the result,
Dot size can be changed.

In FIG. 5B, waveform a indicates a clock, and this clock synchronizes the reading of print data from the page memory 40 and the triangular wave generation circuit used to control the dot size. The waveform is a triangular waveform generated in synchronization with a clock. Waveform C is a waveform of print data read out in synchronization with the clock. When the value of waveform C is 1, it corresponds to black, and when it is 0, it corresponds to white.

The waveform dSf is a pulse waveform indicating the dot size.

When the switch 116 is set to the copy mode side by a signal from the CPU 71 and the dot size switching signal is "1" and the switch 115 is turned off, the output waveform of the comparator 108 becomes waveform d. When the switch 116 is set to the reception mode side and the dot size determination signal is "1", the switch 11
2 is turned off, the comparison voltage input to the comparator 108 becomes high, and the output waveform of the comparator 108 becomes waveform f. Waveform C and waveform d or waveform f are calculated by AND gate 109, and when waveform d is input, AND gate 1
09 outputs waveform e, and when waveform f is input, the output waveform of AND gate 109 becomes waveform g. This controls the energization time to the semiconductor laser 101 and controls the dot size.

In this embodiment, the dot diameter is set larger in the copy mode than in the reception mode, but it may be set in the opposite manner depending on characteristics such as resolution of the facsimile machine.

The dot size switching signal is a signal sent from the CPU 71 in accordance with the operator's designation in the copy mode, and when this signal becomes "0", the switch 11
5 is turned ON, the comparison voltage is lowered, and the dot size is set even larger. As the dot size increases, the overall image density increases and the reproducibility of halftones decreases, but text images are clearly reproduced and easier to read.

When the dot size determination signal from the image mode detection section 41 is 0'' in the reception mode, the switch 112 is turned on.
However, the dot size is set larger than when the dot size determination signal is "1".

FIG. 6 is a flowchart showing the main flow of the CPU 71 that controls the facsimile. In step S1,
Initial settings are performed after the CPU 71 is reset. In step S2, input/output processing of the CPU 71 is performed in two ways. In particular, the selection of whether or not to perform halftone processing is determined. In step S3, the control mode indicating the control state is checked and the program branches depending on the value. If the control mode value is 0, step S4
If it is 1, proceed to step S5, and if it is 2, proceed to step S6. In the standby mode of step S4, the device waits for an incoming signal by key operation or reception. When the device is performing reception processing, the program advances to step S5, reception mode.

If the copy mode is selected, the process advances to step S6 and copying is executed.

When in the management report output mode, the program advances to step S7 and a management report is output.

When processing other than reception mode, for example, in transmission mode or when registering one-touch dial, the program proceeds to step S8.
Proceed to other processing. After each process ends, the program returns to step S2.

FIG. 7 is a flowchart showing the flow of input/output processing (step S2). At step 5301, the halftone flag is checked. This flag is initially set to "0" and selects execution of halftone processing, which will be described later. When the halftone flag is “0”, the program proceeds to step 5302, and when it is “l”, the program proceeds to step 5302.
The process advances to step 304, where a change to selection or non-selection of halftone processing is accepted. In step 5302, the ON edge (change from OFF state to ON state) of halftone key 58 is checked. When an ON edge is detected, the program proceeds to step 5303, sets the halftone flag to "1", and proceeds to step 3306.

If no ON edge is detected, the program continues to step 8306. In step 5304, the ON edge of the halftone key 58 is checked. If an ON edge is detected, the program proceeds to step 5305, sets the halftone flag to "0°," and proceeds to step 5306. If an ON edge is not detected, the program proceeds to step 5306. In step 8306, other Input processing for the keys and sensors and output processing for the load are performed.

FIG. 8 is a flowchart showing the flow of processing in standby mode (step S4). Step 5101.51
At 03.5105, the input of the incoming signal, copy mode key 57, and management report key 56 is checked. When an incoming signal is input, the program proceeds to step 5102, sets the control mode to 1, and returns. When the management report key 56 is pressed, the program advances to step 5105, sets the control mode to 3, and returns. When the copy key 57 is pressed,
The program proceeds to step 5104, sets the control mode to 2, and returns. When both keys 56 and 57 are not pressed and there is no incoming signal, the program proceeds to step 5107, performs other processing, and returns.

FIG. 9 is a flowchart showing the operation in reception mode. In step 5200, the value of the internal state in the reception mode is determined, and the flowchart branches to either step 5201, S5211, or s221.5231.5241 according to the determined value.

When the internal state is 0, the program proceeds to step 520.
The process advances to step 1, and the facsimile connection procedure is executed. In step 5202, it is determined whether or not the connection has been completed. If the connection is not completed, the program returns as is. If it is completed, the program updates the internal state in step 5203 and returns.

If the internal state is 1, the program proceeds to step 52.
11, the transmitted image data is stored in code memory 3.
Transfer to 4. In step 5212, it is determined whether or not the transfer is completed. If it is not completed, the program returns as is; if it is completed, the program returns to step 5213.
Update the internal state with and return.

If the internal state is 2, the program goes to step 52.
Proceed to step 21 and execute the cutting procedure. In step 5222, it is determined whether or not the disconnection is completed. If it is not completed, the program returns as is. If it is completed, the program updates the internal state in step 5223 and returns.

If the internal state is 3, the program goes to step 52.
Proceed to step 31 to determine the number of residuals that must be output. If the remainder is 0, the program returns to step 5232.
．． At step 5233, the internal state is set to 0, the control mode is set to 0, and the process returns to standby mode S4. If the remainder is not 0 in step 5231, the program returns 5
234.5235, the contents of the code memory 34 are expanded and transferred to the page memory 40. Here, the image is expanded line by line, the details of which will be described later. Next, in step 5235, it is determined whether or not the decompression has been completed. If it has been completed, the program sets the switch 116 to the receive mode side in step 236, executes printing in steps 5237 and 8238, and
Update internal state. If the decompression is not completed in step 5235, the program returns directly.

If the internal state is 4, the program goes to step 52.
The program proceeds to step 41 to determine whether printing has been completed, and if it has not been completed, the program returns directly. When completed, the program sets the internal state to 3 in step 5252 and returns.

FIG. 10 is a flowchart showing the operation in copy mode. In step 5400, the value of the internal state of the copy mode value is determined, and the program branches to any of steps 5401, 5411, 5421, and 5431 according to that value. When the internal state is 0, the presence or absence of a document is determined. If there is no manuscript, the program will proceed to step 5.
Proceed to 402.5403, set the internal state and control mode to 0, and return. If there is a document, it is determined in step 5404 whether or not the halftone mode is set. If the document is in the halftone mode, halftone processing such as dither processing is applied and the document is read. If not, the document is read by simple binarization, the internal state is updated in step 5405, and the process returns.

If the internal state is 1, the program proceeds to step 54.
The process advances to step 11, and it is determined whether the reading is completed. If the program has not finished, the program returns as is, and if it has finished, the internal state is updated in step 5412 and the program returns.

If the internal state is 2, the program goes to step 54.
The process advances to step 21, where it is determined whether the halftone flag is "1" or "0". If it is "1", the program sets the dot size switching signal to "1" in step 5422, and if it is "0", it sets the dot size switching signal to "0" in step 5423.Then, in step 424, the program changes the dot size switching signal to "0" in step 5423. Switch the indicated switch 116 to copy mode, step 5425
．． Printing is executed at 5426, the internal state is updated, and the program returns.

When the internal state is 3, it is determined whether printing has ended. If the process has not finished, the process returns as is, and if it has finished, the internal state is set to O in step 5432 and the process returns.

FIG. 11 is a flowchart showing the operation in the management report output mode. In step 5500, the value of the internal state of the pipe ring report output mode is determined, and the process branches to any of steps 5501, 5511, and 5521 according to the value.

When the internal state is 0, the management data is transferred to the page memory 40 in step 5501, and the management data is transferred to the page memory 40 in step 5502.
The internal state is updated.

When the internal state is 1, it is determined in step 5511 whether the transfer has ended. If it has not finished, the program will return, and if it has finished, it will proceed to step 5.
The copy mode is switched to the dot mode by switching the switch 116 at step 12, the process proceeds to step 5513, the dot size switching signal is set to "0", and the process proceeds to step 551.
In step 4, printing is executed, and in step 5515, the internal state is updated.

If the internal state is 2, the program goes to step 55.
The process advances to step 12, where it is determined whether printing has been completed. If the printing has not finished, return as is,
When finished, the internal state and control mode are set to 0 in steps 5522 and 5523, and the process returns.

Next, a method for determining the image mode will be explained with reference to FIG. FIG. 12 is a block diagram showing details of the image mode detection section 41. Referring to FIG. 12, the image mode detection section 41 is connected to the decompression section 37, and responds to signals from counters A to D, which count up in response to a synchronization signal for each line, and from counters C and D. It includes a NAND gate 75 that outputs a signal for determining the type of image based on the signal from the NAND gate 75, and a determination result memory 76 that records the determination result of the image type based on the signal from the NAND gate 75. Counter A counts the number of consecutive black pixels in response to a synchronization signal for each line. However, it is cleared when a white pixel is input. It is also cleared by the 1-line synchronization signal. Then, when the number of black pixels exceeds a predetermined value, a black pixel continuous signal is generated.

Counter B operates in the same way as counter A for white pixels.

Counter C is connected to counter A and counts the black pixel continuous signals output from counter A. The counter C is also cleared by the 1-line synchronization signal. When the count value exceeds a predetermined value, a first signal is output.

Counter D outputs the second signal in the same manner as counter C.

Based on the first and second signals from counters C and D, a dot size determination signal, which will be explained later in FIG. 13, is output from NAND gate 75 in accordance with the type of image.

The determination result memory 76 records a value indicating whether the image is a halftone image or a text image for each line based on the output signal from the NAND gate 75. When outputting images,
A dot size determination signal is output for the line currently being recorded in response to the image output line synchronization signal.

The image mode detection method shown in FIG. 12 discriminates between halftone images and text images based on the following characteristics.

In a halftone image, black and white pixels are difficult to be continuous.

Generally, when halftone processing is performed using the dither method, at most 8×
A matrix size of 8 is used. Therefore, if the density of the reproduced image is high, the probability of consecutive white pixels is very small, and if the density of the reproduced image is low, the probability of consecutive black pixels is very small.

On the other hand, in text images, black and white images tend to be continuous. In the case of character pixels, unless black and white are inverted, there is a very high probability that white will continue for a long time. Also, even though it is a letter,
When an image signal is read at a rate of 8 lines/mm, there will be approximately 4 consecutive black pixels (0.5 mm) for a vertical line, and even more consecutive black pixels for a horizontal line.

Counter C and counter D generate a signal "1" when the probability of consecutive black or white pixels is high. The output signals from counter C and counter D and the NAN at that time
The image type determination based on the output signal from the D gate 75 and the value of the dot size determination signal are shown in FIG.

In the embodiments described above, the type of image is determined by the image mode detection unit based on the probability that black pixels and white pixels are consecutive. In addition to this, the following determination method can be considered.

(1) The image mode is determined based on whether the probability that white pixels will continue for a predetermined value or more is high or low. The determination method using only one of the embodiments shown in FIG. 12 lowers the accuracy of the determination result, but is cheaper in terms of cost.

(2) Determine the image mode depending on whether the probability that black pixels will continue for a predetermined value or more is high or low. This also has the same characteristics as the above (1).

(3) For two-dimensional blocks, apply (1) and (2) above.
Alternatively, the determination shown in FIG. 12 is performed.

(4) The determination may be made not for each line but for each page.

FIGS. 14 and 15 are diagrams corresponding to FIGS. 2 and 9 of the above embodiment in this case. Referring to FIG. 14, the image mode detection unit 41 discriminates the type of image (halftone image or text image) for each page, and the discrimination result is input to the CPU 71. Based on the above determination result, the CPU 71 sends a dot size switching signal to the recording section 3.
Output for 8. In this case, the image mode is detected for each page, so after the image mode is detected for each page, a signal is output to the control section 39, thereby recording the image. For other parts, please refer to the second section.
Since it is the same as the embodiment shown in the figures, the same parts are given the same reference numerals and the explanation thereof will be omitted.

FIG. 15 is a flowchart for determining the image mode for each page. The difference from FIG. 9 is that the internal states are 13 and 14. In step 5334, the contents of the code memory 34 are expanded and transferred to the page memory 40, and the image mode is detected using the image mode detection method described above (5335). In step 5336, the image expansion for one page is completed. If the program has not finished, the program returns as is, and if it has finished, the internal state is updated in step 5337 and the program returns.

When the internal state is 14, the program goes to step 53.
The process proceeds to step 41, determines whether the expanded image is a text image or a halftone image, and outputs a dot size switching signal accordingly (S342, S343), and issues a start command to the recording unit 38 to execute printing (S342, S343). 344). Then, in step 5345, the internal state is updated and the program returns. The contents of the parts other than those described above are the same as those explained in FIG. 9, so the explanation thereof will be omitted.

In the above embodiments, image mode detection was performed line by line or page by page. In addition to this, image discrimination may be performed pixel by pixel. Next, an embodiment in that case will be described with reference to FIGS. 16 and 17. In this embodiment, image discrimination is performed using a 3.times.3 pixel matrix pattern, and a discrimination result is obtained as to whether the center pixel of the matrix is a halftone or a binary one. An example of a pattern in this case is shown in FIG. 17, and the pattern is set based on the fact that in the case of halftones, the pixels are moderately dispersed, and in the case of characters, the pixels are continuous.

FIG. 16 is a block diagram showing the determination circuit.

Referring to FIG. 16, the image data to be output to the recording section is
It is input to the IFOI, is input to an F/F (flip-flop), is delayed by one pixel by the image clock, is input to the next stage F/F, and is further delayed by one pixel, and then moves in the main scanning direction. Input image data for three pixels to the address of the ROM. The image data input to PIFOL is captured internally by the image clock, and the previously stored data (data for one line before the line periodic signal is input) is output, so that the image data is scanned in the sub-scanning direction. Extract data delayed by one line. This output passes through the F/F stage as before to output data for three pixels.

The FIFO is reset by the line synchronization signal, reading data from the beginning and outputting the previous data at the same time.

Furthermore, by passing through one more stage of FIFO, a total of three main scanning pixels x three sub-scanning lines of pixel data is extracted. This nine-pixel data is input to the ROM, and a discrimination signal is output in accordance with the pattern in terms of dot size. R.O.
An example of a pattern stored in M is shown in FIG. 17th
In the pattern shown in (1) in the figure, the pixel is determined to be a halftone, and in the case shown in (2), the pixel is determined to be a text image and a signal is output.

As described above, it is determined whether the center pixel is binary or halftone from nine 3×3 pixels, and a dot size determination signal is output for each pixel.

(2) Second Embodiment In the first embodiment, the size of the recording dots was changed depending on the image mode. In the second embodiment, instead of changing the size of the recording dots, the density of the recording dots is changed.

FIG. 18 corresponds to FIG. 5A of the first embodiment,
FIG. 2 is a block diagram of a circuit that switches the density of recording dots by controlling the power of a semiconductor laser. The data to be recorded is read by the read circuit 106 from the page memory 40 in synchronization with the clock, and is applied to the driver 115. The power of the semiconductor laser 101 is
limited by resistors 103 and 104. At this time, if the switch 102 is turned on by the dot coal making switching signal, it is limited only by the resistor 104, and if it is turned off, it is limited by the resistors 103 and 104. When the power of the semiconductor laser changes, the potential on the photoreceptor drum changes, and the density of the dots when developed by the developing device changes.

A circuit for determining image data for each line in the second embodiment is shown in FIGS. 19 and 20. Since these contents are the same as those in FIGS. 12 and 13 described in the first embodiment, explanation of the contents will be omitted.

In the second embodiment, the density of the recording dots was changed by controlling the power of the semiconductor laser. In addition to this, the density of the dot size may be changed, for example, by changing the bias voltage during development.

[Effects of the Invention] As described above, according to the present invention, in a facsimile machine having a copy mode, the image forming characteristics in the image forming section are determined depending on whether the image is formed based on a received signal or a read signal from the image reading section. is changed. As a result, it is possible to provide a facsimile machine having a copy mode that can faithfully reproduce a received image read on the sending side.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing the outline of a laser facsimile device, FIG. 2 is a block diagram showing an outline of the operation of the facsimile, FIG. 3 is a plan view of the operation display section, and FIG. 5A and 5B are block diagrams and timing charts of a dot size switching circuit according to the first embodiment of the present invention, and FIG. 6 is a circuit diagram of a CPU that controls a facsimile machine. 7 is a flowchart showing input/output processing, FIG. 8 is a flowchart showing standby mode, FIG. 9 is a flowchart showing reception mode, and FIG. 10 is a flowchart showing copying mode. 11 is a flowchart showing the management report output mode, FIGS. 12 and 13 are diagrams showing the image mode detection unit and its output signal, and FIGS. 14 to 17 are flowcharts showing the mode. 18 is a diagram showing a case where image discrimination is performed on a page-by-page and pixel-by-pixel basis, and FIGS. 18 to 20 are diagrams for explaining the operation contents of the facsimile device 5 according to the second embodiment of the present invention. be. 31 is a photoelectric conversion section, 32 is a processing section, 33 is a compression section, 34
is a code memory, 35 is a transmission control unit, 36 is a line connection unit,
37 is an expansion section, 38 is a recording section, 39 is a control section, 40 is a page memory, 41 is an image mode detection section, 51 is an operation display section, 56 is a management report key, 57 is a copy key, 58
The halftone key 101 is a semiconductor laser, 106 is a readout circuit, 107 is a triangular wave generation circuit, and 109 is an AND gate. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Patent applicant: Minolta Camera Co., Ltd.

Claims (1)

[Scope of Claims] A facsimile device having an image reading section and an image forming section, and forming an image by the image forming section based on a received signal from a communication line and a read signal from the image reading section, comprising: A facsimile apparatus comprising a control means for changing image forming characteristics in the image forming section depending on whether image forming is performed based on a received signal or based on the read signal.