JPH01289371A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent the output quality of reception information from deteriorating without needing a troublesome reception information variable power processing and the like by providing a decision means to decide a communication mode with a communication opponent, a selecting means to select a recording density in accordance with the decision result of the decision means and a recording means to record the reception data with a recording density in accordance with the selecting result of the selecting means. CONSTITUTION:The title equipment provides a decision means 1 to decide a communication mode with a communication opponent, a selecting means 1 to select the recording density in accordance with the decision result of the decision means and a recording means 2 to record the reception data with a recording density in accordance with the selecting result of the selecting means. Consequently, the recording at the recording density matched to the reception data density at respective communication standard modes can be executed at a recording means side. Thus, the troublesome data converting processing is not made necessary and the defect that the line enters the picture can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device that can selectively receive data in at least two communication standard modes.

[Prior Art] Conventionally, in a facsimile machine that can selectively receive data in at least two communication standard modes (for example, communication modes of G3 standard and G4 standard), the recording device equipped with the facsimile apparatus has only one type of recording density. Alternatively, only a recording device with one of the recording densities for the G4 standard was provided.

[Problems to be Solved by the Invention] For this reason, in a facsimile machine equipped with a recording device having a recording density for G4, when data is received from a telephone line network using the communication control procedure of the 03 standard, the received image In order to print, after manipulating the received image data on the control device side and converting the density from G3 to G4,
I had to send it to a recording device and print it out.

On the other hand, in a facsimile machine equipped with a recording device with recording density for G3, when data is received from the line network using the G4 standard communication control procedure, the control device receives the data in order to print the received image. After manipulating the image data and converting the density from G4 to 03, it had to be sent to a recording device and printed out.

- In the case of receiving in the G4 standard, the received data is 2
The resolution is 00 to 400 pixels/25.4mm, and G3
In the case of the standard, data is transmitted at a resolution of 1728 pixels/21.5 mm, and the scanning line density is 3.85 lines/line. (standard)
, 7.7 pieces/□.

Therefore, 8x7.7 (8x 3, 85) 12
/ mm→200X200 (400X400)PP
To convert such as I, periodically thin out the dots,
As a result of these processes, defects such as lines appearing in the image may occur.

[Means for Solving the Problems] The present invention has been made for the purpose of solving the above-mentioned problems, and includes the following configuration as one means for solving the above-mentioned problems.

That is, in a facsimile apparatus capable of selectively receiving data in at least two communication standard modes, a determining means for determining a communication mode with a communication partner, a selecting means for selecting a recording density according to a determination result of the determining means, and a receiving data. recording means for recording at a recording density according to the selection result of the selection means.

[Function] With the above configuration, the recording means can perform recording at a recording density that matches the received data density in each communication standard mode, eliminating the need for troublesome data conversion processing and eliminating lines in the image. It is possible to prevent defects such as intrusion.

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

FIG. 1 is a block diagram of an embodiment according to the present invention. 3 is a recording unit that prints out recorded data from the storage unit 3 at a recording density specified by the control unit 1, and 3 is a reading unit 7 for receiving data from the line network.
A storage section 4 stores the read data of the data, and a compression/expansion section 4 performs a known compression/expansion process under the control of the control section 1. 5 is connected to the 03 line network 10 and is connected to the well-known G
A communication control unit 6 for G3 that performs facsimile communication in accordance with the 04 communication standard is connected to the 04 line network 20, and is connected to the known G4 communication control unit 6.
A communication control unit for G4 performs facsimile communication in accordance with the communication standard, 7 is a reading unit that reads the placed original at a density according to the reading density from the control unit 1, and the read data from the reading unit 7 is It is temporarily stored in the storage section 3 and then sent out to the network or printed out from the recording section 2. Further, 8 is a ROM that stores parameters and the like used in this embodiment in addition to the above-mentioned programs.

The details of the recording density change in the recording density conversion section 2a in the recording section 2 will be explained below with reference to FIG.

In FIG. 2, 21 is a recording control unit that receives and receives a recording density designation from the control unit 1 and reads stored data from the storage unit 3 at a timing according to the recording density designation, and 22 emits a laser beam in accordance with the recording data. Light emitting section for controlling light emission/non-light emission, 2
3 is a scanning speed control section that controls the polygon mirror drive section 24 according to the recording density specification from the recording control section 21, controls the rotation speed of the polygon mirror, and controls the photoreceptor scanning speed at the output section 2b; This is a polygon mirror drive unit that rotates the polygon mirror at a speed controlled by the operation speed control unit 23. Note that the electrophotographic electrostatic latent image formation mechanism and the electrostatic latent image visualization and fixing mechanism in the output section are well known, and detailed explanations thereof will be omitted.

In the above configuration, the rotational speed of the photosensitive member (photosensitive drum) of the recording section 2b is generally constant. The printing speed is proportional to the rotation speed of the photoreceptor.

The vertical and horizontal resolutions are as follows.

Number of vertical scanning lines: Nv = (S/T) Number of horizontal dots, Nh = (T/l) However, printing time T for S knee page; hexahedral mirror (polygon mirror) - rotation time per surface t: print data signal (LDRV) period In order to change the above resolution, it is only necessary to change T and t.In particular, when the rotation speed of the hexahedral mirror is changed, the dot spacing changes uniformly, so the printed image There is little deterioration.

Therefore, when printing data received from the 63rd line, determine the photoconductor rotation speed (-page printing time) according to the G3 standard, and determine the rotation time per hexahedral mirror (polygon mirror) surface. decide. Then, the output section 2b may be controlled according to the determined rotational speed, etc.

Similarly, when printing data received from the 04 line, determine the photoconductor rotation speed (-page printing time) in accordance with the G4 standard, and determine the rotation time per hexahedral mirror (polygon mirror) - surface. decide.

Then, the output section 2b may be controlled according to the determined rotational speed, etc.

The reception control of this embodiment having the above configuration will be explained below with reference to the flowchart of FIG.

When a call occurs to the G3 communication control section 5 or the G4 communication control section 6, the control section 1 is notified to that effect. When the control unit l detects the occurrence of this call, it shifts to the process shown in FIG.
In step 5100, it is determined whether the call is detected by the 03 communication control section 5 or the G4 communication control section 6. If the call is from the G3 communication control section 5, the process advances to step 5101, starts the G3 communication control section 5, and then calls the G3 communication control section 5.
Data from the line network 10 is received. At the same time, as shown in step 5103, the compression/expansion section 4 is instructed to perform decompression in the G3 decompression mode. Next step 51
In step 05, the decompressed data is stored in a predetermined position in the storage section 3.

Then, in the following step 5106, it is checked whether or not the reception for one page has been completed. If the reception for one page has not been completed, the process returns to step 5100 and continues the reception for one page.

As a result, from now on, the received data from the 03 line network IO, which is sequentially received, is received by the G3 communication control section 5, expanded by the compression/expansion section 4, and stored in the storage section 3.

On the other hand, based on the determination in step 5100, the G4 communication control unit 6
If it is the called party, the process advances to step 5102, and G4
The communication control unit 6 is activated to receive data from the G4 line network 2o. At the same time, in step 5104, compress/
The decompression unit 4 is instructed to perform decompression in the G4 decompression mode. Then, the process proceeds to step 5105. Thereby, the received data from the G4 line network 2o, which will be received sequentially from now on, will be as follows:
It is received by the G4 communication control section 6, decompressed by the compression/expansion section 4, and stored in the storage section 3.

Then, in step 5106, it is checked whether or not the reception of one page's worth of data has been completed. If the reception of one page's worth of data has been completed, the process advances to step 5107, and if it has not yet been completed, the process returns to step 5100.

In step 5107, whether the data stored in the storage unit 3 is received data from the G3 line network 1o or the data stored in the G4 line network 2o
The control unit 1 checks whether the received data is from the G3 line network 1o.
In the case of received data of
Specify to print out (at recording density for G3) and proceed to step 5IIO.

On the other hand, in the case of received data from the G4 line network 2o, in step 5109, the received data stored in the storage unit 2 is specified to be printed out at a resolution that conforms to the G4 standard (at a recording density for G4), and in step Sl Proceed to step 10.

The recording density in this case is, for example, 9X3 for G3.
．． 85I2/+asa, 8x7.7I for G4
The recording density is 2/□.

In the recording unit 2 that has received this recording density designation, the photoreceptor rotation speed (-page printing time) is determined in accordance with each standard as described above, and the rotation time per hexahedral mirror (polygon mirror) surface is determined. decide. Then, the output section 2b is controlled according to the determined rotational speed, etc., and print processing for one page is executed.

With the above configuration, conventionally, for example, image data of 8X3.85g/, when received in G3 mode, can be received at 8X7.7℃.
When printing with a recording device that only has a recording density of /a+s, a special variable magnification device is required, but this embodiment does not require these complicated configurations, and simply uses the mechanical part of the recording device for printing output. It is only necessary to control the operating speed of the printer, and no deterioration of the printed image occurs.

The same applies when 200X200PP I image data received in G4 mode is printed by a 400X400 PPI recording device.

[Other Embodiments] The above explanation assumes a page printer that stores print data for each page and can print out data each time one page's worth of data is completed. There's no need to wait;
Printout may be performed each time the printable amount of received data is available.

Also, in the above explanation, nothing is specified regarding the number of types of recording densities in the G3 standard (and recording densities in the G4 standard), but if it can be controlled by the recording density converter 2a of the recording unit 2, Printing can be done with any number of recording densities. In this case as well, it is only necessary to control the above-mentioned rotational speed and the like in accordance with the recording density, and this can be achieved with simple control. Also in this case, there is no image deterioration.

As explained above, according to this embodiment, even if the recording density of the received information received from the line network differs, there is no need for troublesome processing of scaling the received information, and the output quality of the received information can be improved. It is possible to provide a facsimile device that can print out with simple control without deterioration.

[Effects of the Invention] As explained above, according to the present invention, even when the output density of received information received from a line network is different,
It is possible to provide a facsimile machine that does not require troublesome processing for scaling received information, and does not degrade the output quality of received information.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of an embodiment according to the present invention, FIG. 2 is a detailed configuration diagram of the recording degree converter shown in FIG. 1, and FIG. 3 is a reception control flowchart of the embodiment. In the figure, 1...control section, 2...recording section, 2a...,
Recording density conversion unit, 2b...output unit, 3...storage unit,
4...Compression/expansion unit, 5...-G3 communication control unit, 6
...G4 communication control section, 7...reading section, 8...R
OM, 21... Recording control section, 22... Light emitting section, 23
-...Scanning speed control unit, 24...Polygon mirror drive unit.

Claims (2)

[Claims] (1) In a facsimile device capable of selective reception in at least two communication standard modes, a determining means for determining a communication mode with a communication partner, and a selecting means for selecting a recording density according to the determination result of the determining means; A facsimile apparatus comprising recording means for recording received data at a recording density according to a selection result of the selection means. (2) The facsimile apparatus according to claim 1, wherein the recording means is an electrophotographic printing device, and the recording density is changed by changing the light scanning speed to the photoreceptor.