Facsimile and static presentation processing – Facsimile – Auxiliary signal
Reexamination Certificate
1996-05-15
2003-12-09
Lee, Cheukfan (Department: 2622)
Facsimile and static presentation processing
Facsimile
Auxiliary signal
C358S404000, C358S444000, C358S437000, C358S401000, C358S468000
Reexamination Certificate
active
06661536
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an apparatus and method for stopping a print operation upon reception and copy of black data, and particularly to a method of stopping a print operation when black data is sequentially received in excess of a designated line number during the reception or copy reproduction of image data.
BACKGROUND OF THE INVENTION
Conventionally in general facsimile systems, a print operation is performed by receiving image data according to a protocol, which are rules for the interaction of transmitting and receiving units of communications equipment, that are usually implemented through the programming of the data terminal equipment involved rather than being built into the hardware, after a ring signal is detected, or by scanning a document on a document tray upon input of a copy key. In a plain paper facsimile system printing image data onto cut sheets of a printable medium such as paper, a developing unit including an expendable organic photosensitive OPC drum, and a toner hopper supplying toner are designed to be exchanged when they are used in excess of a predetermined limit of use. When by mistake a document is reversely transmitted, i.e., when the back of the document is transmitted, or copied, due to a user's error, and when a substantial portion of the back surface of the document bears a dark color, the receiving party's facsimile system will sequentially print black image data and thus the received document will be printed substantially entirely in black. Accordingly, I have found that toner is excessively consumed during printing and as a result, the quickly depleted toner hopper has to be exchanged earlier than expected Accordingly, I have discovered that there are some disadvantages in conventional facsimile units because the lifetime of the expendable element is shortened, thereby increasing the cost of maintenance and repair, and image data that is subsequently transmitted can not be received after the toner hopper has been depleted of toner.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an improved facsimile telecommunications unit.
It is another object to provide an apparatus and process for stopping a printing operation when black data is sequentially received beyond a predetermined number of lines, upon reception of, or copy reproduction of, image data.
It is yet another object to provide a circuit and process for controlling a facsimile telecommunications unit to detect and terminate printing of image data that is substantially or completely devoid of information.
It is still another object to provide a circuit and process for minimizing consumption of toner by a facsimile telecommunications unit while printing image data that is substantially or completely devoid of information.
To achieve these and other objects, the present invention contemplates a circuit and a process for controlling operation of a facsimile telecommunications unit by performing a protocol upon reception of a ring signal to thereby receive facsimile transmitted image data, storing the received image data in a memory, and when image data read from the memory indicates the printing of substantially only black data consecutively over a predetermined number of adjoining lines, stopping a printing operation and displaying a visual message indicating the termination of printing operation.
Additionally, to achieve these and other objects, the present invention contemplates an apparatus and process for scanning image data of a document upon input of a copy key, storing the scanned image data in a memory, and when image data read from the memory represents substantially black data consequently over a predetermined number of adjoining lines, stopping the printing operation and displaying a visual message indicating the interruption of the printing operation.
REFERENCES:
patent: 4947345 (1990-08-01), Paradise et al.
patent: 4992884 (1991-02-01), Sakata
patent: 5019916 (1991-05-01), Ogura
patent: 5335085 (1994-08-01), Nakatsuma
patent: 5420693 (1995-05-01), Horiuchi et al.
patent: 5493421 (1996-02-01), Uetama et al.
Bushnell , Esq. Robert E.
Lee Cheukfan
Samsung Electronics Co,. Ltd.
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