Image forming apparatus
First Claim
1. An image forming apparatus for forming an image on an image forming medium and capable of forming a specific hidden pattern for specifying an apparatus at a specific position on said medium, said image forming apparatus comprising:
- hardware control signal supplying means for generating and supplying a hardware control signal which is necessarily generated for an image and which represents that data exists when color image data exists in the image forming apparatus, said hardware control signal including an external signal which is used for usual printing and an internal signal which is generated to be used in said printer engine when a part of a test pattern is outputted;
software control signal supplying means for generating and supplying a software control signal for determining whether said specific hidden pattern is added to a color image; and
specific hidden pattern control synthesizing means for adding said specific hidden pattern on an output image when either said external signal of said hardware control signal or said software control signal is detected, and for not adding said specific hidden pattern on the output image when said internal signal of said hardware control signal is detected.
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Accused Products
Abstract
An image forming apparatus forms an image on an image forming medium and can form a specific hidden pattern for specifying a body of an apparatus at a predetermined position of the medium. A hidden pattern addition mechanism uses both a software control signal which is generated by software and a hardware control signal which is generated by hardware and must be used for forming the image on the medium as control signals for adding the specific hidden pattern when the specific hidden pattern is added to a specific position of the medium to form the image.
12 Citations
17 Claims
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1. An image forming apparatus for forming an image on an image forming medium and capable of forming a specific hidden pattern for specifying an apparatus at a specific position on said medium, said image forming apparatus comprising:
- hardware control signal supplying means for generating and supplying a hardware control signal which is necessarily generated for an image and which represents that data exists when color image data exists in the image forming apparatus, said hardware control signal including an external signal which is used for usual printing and an internal signal which is generated to be used in said printer engine when a part of a test pattern is outputted;
software control signal supplying means for generating and supplying a software control signal for determining whether said specific hidden pattern is added to a color image; and specific hidden pattern control synthesizing means for adding said specific hidden pattern on an output image when either said external signal of said hardware control signal or said software control signal is detected, and for not adding said specific hidden pattern on the output image when said internal signal of said hardware control signal is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- hardware control signal supplying means for generating and supplying a hardware control signal which is necessarily generated for an image and which represents that data exists when color image data exists in the image forming apparatus, said hardware control signal including an external signal which is used for usual printing and an internal signal which is generated to be used in said printer engine when a part of a test pattern is outputted;
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17. An image forming apparatus for forming an image on an image forming medium and capable of forming a specific hidden pattern for specifying an apparatus at a specific position on said medium, said image forming apparatus comprising:
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a hardware control signal supplying unit that generates and supplies a hardware control signal which is necessarily generated for forming an image and which represents that data exists when color image data exists in the image forming apparatus, said hardware control signal including an external signal which is used for usual printing and an internal signal which is generated to be used in said printer engine when a part of a test pattern is outputted; a software control signal supplying unit that generates and supplies a software control signal for determining whether said specific hidden pattern is added to a color image; and specific hidden pattern control synthesizing unit that adds said specific hidden pattern on an output image when either said external signal of said hardware control signal or said software control signal is detected, and that does not add said specific hidden pattern on the output image when said internal signal of said hardware control signal is detected.
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Specification