JPH02193157A - image recording device - Google Patents

Abstract

PURPOSE:To save recording paper by half by providing a means to discriminate a valid page from an invalid page of received information and a recording device, which successively records the pages judged to be valid on both surfaces of the recording paper. CONSTITUTION:When a copying mode is designated, both surfaces of an original is read by a reading device 2, and this read data is recorded on both surfaces of the recording paper by the recording device 3. When both surface copying is to be carried out, a blank page is detected by a controller 4 from the pages of the original read by the reading device 2, and recording is carried out successively of the valid pages, other than the blank pages. Further, when data is being received, the data is received from the outside by a communication controlling device 5, and after the received data is developed into image data by the controller 4 and transformed into recording data, both surface recording on the recording paper is carried out by the recording device 3. Thus the image information is recorded on both surfaces of the recording paper and the recording paper can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image recording device such as a facsimile machine.

[Prior Art] Conventionally, facsimile devices have been known that include a reading device, a recording device, and a controller that controls these devices to transmit and receive data with other facsimile devices.

When sending a document with this facsimile machine,
One side of the document is scanned by the image sensor installed in the reading device.
The facsimile machine reads each sheet one by one, converts the read data into predetermined transmission data by the controller, and transmits it to the other party's facsimile machine via the communication control device. Furthermore, when receiving data, the data sent from the other party's facsimile machine is converted into recording data, and the recording device prints it out on one side of recording paper.

[Problems to be Solved by the Invention] However, with the above-mentioned conventional technology, even if information can be recorded on both sides of the recording paper, it is always possible to record only on one side, resulting in wasted use of the recording paper. There was a problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image recording apparatus that can save recording paper, efficiently record received information, and facilitate management of recorded paper.

[Means for Solving the Problems] The present invention provides an image recording device that includes a reading device, a recording device, and a controller that controls these devices and transmits and receives data to and from other devices. The present invention is characterized by comprising a means for determining the valid pages, and a recording device that sequentially records only the pages determined to be valid pages on both sides of the recording paper.

[Function] In the present invention, by recording on both sides of the recording paper,
You can save half the amount of recording paper compared to recording on one side. Furthermore, the number of recording sheets after recording can be reduced to one half, and the reduction in the number of sheets makes it easier to manage the documents.

In addition, since only the pages of the received information that are determined to be valid pages are sequentially recorded on both sides of the recording paper, there is no needless recording of blank pages, etc., and the received information can be recorded efficiently and properly. A double-sided recording state can be obtained.

[Embodiment] FIG. 1 shows a facsimile device 1 according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an overview.

This facsimile device 1 includes a reading device 2 that is capable of reading both sides of a document, a recording device 3 that performs recording on both sides of recording paper, and a controller 4 that controls these reading device 2 and recording device 3. are doing. Also controller 4
is connected to a communication network 6 via a communication control device 5 containing a modem and a DSU (in-house data line termination unit).

FIG. 2 is a flowchart showing the basic operations of sending, receiving, and copying in the duplex processing mode in this facsimile machine 1.

First, the facsimile operation mode is specified (S10
), when the transmission mode is designated (S11), the reading device 2 reads both sides of the document (S12), the communication control device 5 converts the read data into predetermined transmission data, and transmits the data to the other party's facsimile device. (S13). Here, data can be transmitted simultaneously on both sides by using a two-channel communication interface, or can be transmitted sequentially from one side at a time by using a one-channel communication interface.

Then, the above operations are performed sequentially for the set originals, and when all the originals have been sent (S14)
, ends the process.

Also, when copy mode is specified in Sll,
The reading device 2 reads both sides of the document (S15), and the recording device 3 records the read data on both sides of the recording paper (S16). Note that when performing double-sided copying, blank pages are detected by the method described later among the original pages read by the reading device 2, and recording is performed sequentially only on valid pages other than these blank pages. There is. Then, when all the original pages have been copied (S17), the process ends.

When receiving data, the communication control device 5 receives data from the outside (318), and the controller 4 develops the received data into image data and converts it into data for recording, and then the recording device 3 transfers the data to the recording paper. Both sides are recorded (S19).

In this double-sided recording, a blank page is detected from the received data, and only valid pages other than the blank page are sequentially recorded. Then, the process ends when the reception is completed (,520).

FIG. 3 is a side view showing the configuration of the recording device 3.

This recording device 3 is configured as a laser beam printer, and has a paper cassette 8 in which recording paper 7 is set.
, a paper feed roller 9 , a recording unit 10 consisting of a laser scanner, a photosensitive drum, a developer, etc., a fixing roller 11 , a reversal switching section 13 , a reversing mechanism section 14 , and a paper ejection roller 4
0 and a paper discharge tray 41.

In this recording device, first, the recording unit 10 and the fixing roller 11 perform recording on the surface of the recording paper 7, and then the recording paper 7 guided to the paper ejection tray 41 side is reversed by the reversing drive of the paper ejection roller 40. The reversing mechanism section 1 is activated by the operation of the switching section 13.
4, the paper is sent to the recording unit 10 again, the back side is recorded, and the paper is stacked on the paper discharge tray 41.

FIG. 4 is a flowchart showing an example of the operation when recording is performed only on valid pages as described above.

First, it is determined whether each received page is valid (S3
1.532). This judgment is made at the stage when the received data (MMR encoded information) is decoded and the image data is decoded.
The number of changed pixels of this image data is counted. and,
If this count value is smaller than a predetermined value, the page is regarded as a blank page and determined to be invalid. Note that the above processing is executed by the controller 4.

Next, if the page is determined to be a valid page, the image data is recorded (S33), and if it is determined to be an invalid page, no recording is performed for this page.

Then, if there is further received data (S34
), it is determined whether the page of the recording paper recorded in S33 is the front page or the back page (535), and if it is the front page, the recording paper is reversed to roughly record the back page and the process returns to S31 (535). 336),
Conversely, if it is the back page, eject this recording paper and press 331.
The process returns to and records on a new recording paper (S37).

Furthermore, if it is determined in S34 that there is no more received data, the recording paper is ejected and the process ends (S34).
38).

Figures 5 (1) to (3) show cases in which when a normal one-sided original mixed with a blank original is sent from the sending side, two-sided printing is performed as is, and two-sided printing is performed by selecting only valid pages. FIG. 3 is a schematic diagram for comparing and explaining the case of recording.

As shown in FIG. 5 (2), when double-sided recording is performed as is, a document with a blank back side is included;
As shown in FIG. 3, when only valid pages are selected for double-sided recording, a double-sided recorded document with no blank pages can be obtained.

As described above, in this facsimile device, since the recording device is provided with a double-sided recording function, image information can be recorded on both sides of the recording paper, and the use of recording paper can be saved.

Furthermore, since the number of sheets of recording paper after recording is reduced, management can be facilitated when the documents are filed as received documents.

Furthermore, since only the pages that are determined to be valid pages of the received information are sequentially recorded on both sides of the recording paper, there is no needless recording of blank pages, etc., and the received information can be recorded efficiently.
Appropriate double-sided recording conditions can be obtained.

In the above embodiment, both the reading device and the recording device are provided with the double-sided processing function, but it is also possible to have sufficient effects even if only the recording device is provided with the double-sided processing function.

Further, in the second embodiment, a recording device in which a reversing mechanism is provided in a laser printer is described, but a recording method such as thermal transfer or inkjet may be used as long as it can record on both sides of recording paper. Recording may be performed from both sides without reversing the recording paper.

Furthermore, instead of being a recording device dedicated to the double-sided recording mode, it may be configured as a recording device that selectively switches between the double-sided recording mode and the single-sided recording mode.

[Advantageous Effects of the Invention 1] According to the present invention, the double-sided recording function of the recording device allows recording to be performed on both sides of the recording paper, thereby saving the amount of recording paper in half compared to the case of recording on one side.

Further, according to the present invention, since the number of sheets of recording paper after recording is reduced, management can be facilitated even when the received document is filed in a binder or the like, for example.

Furthermore, according to the present invention, only the pages determined to be valid pages among the received information are sequentially recorded on both sides of the recording paper.
This has the effect that received information can be efficiently recorded without wastefully recording blank pages, etc., and that an appropriate double-sided recording state can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an outline of a facsimile machine according to an embodiment of the present invention. FIG. 2 shows a facsimile machine according to the same embodiment.
3 is a flowchart showing basic operations of transmission, reception, and copying in a duplex processing mode. FIG. 3 is a side view showing the configuration of the recording device of the facsimile machine according to the same embodiment. FIG. 4 is a flowchart showing the recording operation of the facsimile machine according to the same embodiment. Figures 5 (1) to (3) show cases in which when a normal one-sided original mixed with a blank original is sent from the sending side, two-sided printing is performed as is, and two-sided printing is performed by selecting only valid pages. FIG. 3 is a schematic diagram for comparing and explaining the case of recording. 4... Controller, 5... Communication control device, 6... Communication network, 7... Recording paper.

Claims (1)

[Claims] In an image recording device that includes a reading device, a recording device, and a controller that controls these devices and transmits and receives data to and from other devices, means for determining valid pages and invalid pages of received information; An image recording apparatus comprising: a recording apparatus that records only the pages determined to be valid pages on both sides of recording paper;