Using thermally transferred invisible ink detectable by exposure to invisible light of specific wavelength
First Claim
1. A secrecy-protected facsimile machine comprising:
- receiving means for receiving transmit data based on an original which is transmitted from a facsimile transmission machine; and
recording means for recording an image of said original on a recording paper using invisible ink based on the transmit data received by the receiving means, wherein said recording means comprises;
thermal transfer film on which the invisible ink is disposed,a thermal transfer printer having a thermal head which records an image by transferring the invisible ink onto the recording paper by applying heat to said thermal transfer film,moving means for moving said thermal transfer film with respect to said thermal head, andcontrol means for transmitting a signal for generating heat to said thermal head according to said transmit data.
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Accused Products
Abstract
In a facsimile machine which receives transmit data based on an original that is transmitted from a facsimile transmit machine through a telephone line at its data scrambler and which records an image of the original that is transmitted by decoding the received transmit data on recording paper at its thermal transfer printer portion, in order to maintain the secrecy of the original until the recording paper is delivered to an intended receiver by making it impossible to read the recording paper itself on which the transmit data is recorded and outputted, an image by invisible ink is recorded on the recording paper. Also, the image by the invisible ink which is recorded on the recording paper is displayed by converting it to a visible image by means of a visual observation apparatus, so that only a predetermined person can read the recording paper.
29 Citations
11 Claims
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1. A secrecy-protected facsimile machine comprising:
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receiving means for receiving transmit data based on an original which is transmitted from a facsimile transmission machine; and recording means for recording an image of said original on a recording paper using invisible ink based on the transmit data received by the receiving means, wherein said recording means comprises; thermal transfer film on which the invisible ink is disposed, a thermal transfer printer having a thermal head which records an image by transferring the invisible ink onto the recording paper by applying heat to said thermal transfer film, moving means for moving said thermal transfer film with respect to said thermal head, and control means for transmitting a signal for generating heat to said thermal head according to said transmit data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A secrecy-protected facsimile machine comprising:
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receiving means for receiving transmit data based on an original which is transmitted from a facsimile transmission machine; recording means for recording an image of said original on a recording paper using invisible ink based on the transmit data received by the receiving means; and visual observation means for converting the image recorded in the invisible ink into a visible image and for displaying the visible image, wherein said visual observation means comprises; converting means for converting the image recorded in the invisible ink to an image of invisible light by irradiating the invisible ink with light of a predetermined wavelength, a sensor for detecting the invisible light of the image which is converted by the converting means, and displaying means for displaying an image in the invisible ink as a visible image based on the invisible light which is detected by the sensor.
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10. A facsimile machine with a secrecy protection function comprising:
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receiving means for receiving transmit data based on an original which is transmitted from a facsimile transmission machine; recording means for recording an image of said original on a recording paper based on the transmit data received by said receiving means, said image being recorded by using one of visible ink and invisible ink, determining means for determining whether said transmit data indicates secret data or non-secret data; and control means for controlling said recording means to record said image using said visible ink if said determining means has determined said non-secrecy of data and for controlling said recording means to record said image with said invisible ink if said determining means has determined secrecy of data. - View Dependent Claims (11)
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Specification