US5568268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming device with forgery prevention
Assignee: Fujifilm Business Innovation Corp
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Filing: 1995-04-19
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Granted: 1996-10-22
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Expires: 2015-04-19
Abstract
Abstract An image forming device, such as a color copying machine or a color printer, which processes an input image signal, thereby obtains an output image signal, and forms an output image on the basis of the output image signal. In the image forming device, an information input unit writes some information identifying the copying machine to an area in an information storing unit at the time when a power source is turned on for the copying machine for the first time after the assembly thereof. When the power source is turned on for a second and any subsequent times for the copying machine, the copying machine copies an original sheet in such a state of the machine that the information stored in the area of the information storing unit is added to the output image in the form of a pursuit image which it is hard or impossible to recognize with the human eyes.
Inventors
- 👤 Masato Tsuji
- 👤 Katsuyuki Kouno
- 👤 Hidefumi Nishigai
- 👤 Hideyasu Nakamura
- 👤 Nobuyuki Kodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:06
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00838; H04N1/00856; H04N1/00875; H04N1/00864; H04N1/00867; H04N1/0087; H04N1/0088; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3204; H04N2201/3205; H04N2201/3269; H04N2201/327; H04N2201/3271
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
As image forming device which processes an input signal to thereby obtain an output image signal, and forms an output image from the output image signal, said forming device comprising: information generating means for generating information for identifying said image forming device; information storing means for storing the information; means for determining whether the stored information is the same as predetermined information; memory control means, responsive to the determining means, for controlling the storage of information by said information storing means by preventing said information storing means from storing new information after said information storing means has once stored the information generated by said information generating means; and pursuit image signal adding means for adding to the output image signal the information stored in said information storing means as a pursuit image signal that is not viewable by eye when the output message signal is developed as an image, when the stored information is the same as the predetermined information.
Claim 2
Dependent Claim
160 words
As image forming device which processes an input signal to thereby obtain an output image signal, and forms an output image from the output image signal, said forming device comprising: information generating means for generating information for identifying said image forming device; information storing means for storing the information; means for determining whether the stored information is the same as predetermined information; memory control means, responsive to the determining means, for controlling the storage of information by said information storing means by preventing said information storing means from storing new information after said information storing means has once stored the information generated by said information generating means; and pursuit image signal adding means for adding to the output image signal the information stored in said information storing means as a pursuit image signal that is not viewable by eye when the output message signal is developed as an image, when the stored information is the same as the predetermined information.
Claim 3
Dependent Claim
42 words
The image forming device as defined in claim 1, wherein said image storing means effects the storage of the information generated by said information generating means when a power source supplies a power for the first time to said image forming device.
Claim 4
Dependent Claim
184 words
An image forming device which processes an input image signal to thereby obtain an output image signal, and forms an output image from the output image signal, said image forming device comprising: information generating means for generating information for identifying said image forming device; information storing means for storing the information; memory control means for controlling the storage of information by said information storing means by preventing said information storing means from storing new information after said information storing means has once stored the information generated by said information generating means; information comparing means for comparing the information generated by said information generating means with the information stored in said information storing means; and pursuit image signal adding means for adding to the output image signal the information stored in said information storing means as a pursuit image signal that is not viewable by the human eye when the output image signal is developed as an image when said information comparing means finds that the information generated by said information generating means is in agreement with the information stored in said information storing means.
Claim 5
Dependent Claim
184 words
An image forming device which processes an input image signal to thereby obtain an output image signal, and forms an output image from the output image signal, said image forming device comprising: information generating means for generating information for identifying said image forming device; information storing means for storing the information; memory control means for controlling the storage of information by said information storing means by preventing said information storing means from storing new information after said information storing means has once stored the information generated by said information generating means; information comparing means for comparing the information generated by said information generating means with the information stored in said information storing means; and pursuit image signal adding means for adding to the output image signal the information stored in said information storing means as a pursuit image signal that is not viewable by the human eye when the output image signal is developed as an image when said information comparing means finds that the information generated by said information generating means is in agreement with the information stored in said information storing means.
Claim 6
Dependent Claim
42 words
The image forming device as defined in claim 3, wherein said image storing means effects the storage of the information generated by said information generating means when a power source supplies a power for the first time to said image forming device.
References Cited (Backward Citations)
JPH0283571A
Cited
US5212519A
Cited
JPH04294682A
Cited
US5465161A
Cited
JPH04332260A
Cited
EP0551016A1
Cited
EP0554115A1
Cited
US5444518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-22 | 2000-04-22 | 2000-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-22 | 2004-04-22 | 2004-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-22 | 2008-04-22 | 2008-10-22 | $7700.00 | Window Closed / Lapsed |