Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Reexamination Certificate
1997-02-07
2001-07-10
Lee, Thomas D. (Department: 2624)
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
C358S451000, C358S451000
Reexamination Certificate
active
06259539
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates generally to facsimile devices and, more particularly, relates to facsimile devices having a copy mode in which an image read in a read portion is image-formed and outputted in a storing portion of the same device.
2. Description of the Related Art
A facsimile device having a conventional copy mode operates as a digital copying apparatus when a copy mode is set.
In the facsimile device having a copy mode, when the device is set to the copy mode, data processing of an image read is carried out in accordance with the resolution and half tone expression characteristic of a reader and a recorder, and image-forming is performed with an appropriate dot size.
In a facsimile mode, there is a problem that while the image is outputted based on data transmitted, with resolution and gradation determined according to a standard, the transmitted image data has no relation with the performance and the density characteristic of a receiving recorder, so that when image-forming is performed with the same dot size as in the copy mode, the image read at the transmitting source cannot be reproduced faithfully. For example, the density of the half tone image is reproduced higher than an appropriate density, is or a line image in a text image mainly including characters becomes thin or broken and difficult to read.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to properly reproduce a half tone image and a text image in a facsimile device.
Another object of the present invention is to properly reproduce a halftone image and a text image in a simple way in a facsimile device.
Still another object of the invention is to faithfully reproduce a received image, as read at a transmitting source, in a facsimile device having a copy mode.
Yet another object of the invention is to faithfully reproduce a received image, as read at a transmitting source with a simplified structure in a facsimile device having a copy mode.
The above-mentioned objects of the present invention can be achieved by a facsimile device including elements below. That is, a facsimile device according to the present invention includes a receiver for receiving an image through a communication line, an image forming device for forming an image with a plurality of unit pixels based on image data, a determining device for determining whether the image data is image data of a character image or image data of a half tone image, and a controller for controlling a condition for forming the image of the image forming device based on the result of the determination of the determining device.
Since the facsimile device includes the elements above, the condition for forming the image of the image forming means is controlled according to the kind of the received image at the time of receiving. As a result, in the facsimile device, both a half tone image and a text image can be reproduced properly.
In another aspect of the present invention, a facsimile device includes a receiver for receiving image data through a communication line, a reader for reading an original image and creating image data, an image forming device for forming an image with a plurality of unit pixels based on the image data from the receiver or the reader, a determining device for determining whether the image used for forming the image of the image forming device is image data from the receiver or image data from the reader, and a controller for controlling a condition for forming the image of the image forming device based on the result of determination of the determining device.
The facsimile includes the elements above, so that the condition for forming the image in the image forming device is changed depending on whether it is image-forming based on a received signal or a read signal. As a result, the received image read at the transmitting office can be faithfully reproduced in the facsimile device having the copy mode.
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
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Hamano Hiroaki
Nakatani Keiji
Lee Thomas D.
Minolta Co. , Ltd.
Sidley & Austin
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