摘要:
The type of printing medium on which an image will be formed is discriminated based upon the image of the medium surface read by an image reading unit for reading the surface as an image. If the discriminated medium type is other than a prescribed printing medium, the image is formed without changing an image formation parameter. When the type of printing medium and the state of the surface are discriminated, image formation can be performed in the most stable image forming mode if an abnormality occurs.
摘要:
The type of printing medium on which an image will be formed is discriminated based upon the image of the medium surface read by an image reading unit for reading the surface as an image. If the discriminated medium type is other than a prescribed printing medium, the image is formed without changing an image formation parameter. When the type of printing medium and the state of the surface are discriminated, image formation can be performed in the most stable image forming mode if an abnormality occurs.
摘要:
The type of printing medium on which an image will be formed is discriminated based upon the image of the medium surface read by an image reading unit for reading the surface as an image. If the discriminated medium type is other than a prescribed printing medium, the image is formed without changing an image formation parameter. When the type of printing medium and the state of the surface are discriminated, image formation can be performed in the most stable image forming mode if an abnormality occurs.
摘要:
The type of printing medium on which an image will be formed is discriminated based upon the image of the medium surface read by an image reading unit for reading the surface as an image. If the discriminated medium type is other than a prescribed printing medium, the image is formed without changing an image formation parameter. When the type of printing medium and the state of the surface are discriminated, image formation can be performed in the most stable image forming mode if an abnormality occurs.
摘要:
To provide a recording-material type determination apparatus and recording-material type determination method which can determine the type of recording material using simple calculations as well as to provide an image forming apparatus capable of obtaining stable image quality independent of the type of recording material using the apparatus and method.Based on data read by a read unit which reads surface images of recording material, a first calculation unit calculates the depth of irregularities in the surface of recording material and stores the results of calculation in a register A while a second calculation unit calculates the spacing of irregularities on the surface of the recording material and stores the results of calculation in a register B. Based on the values in the registers A and B, the type of recording material such as gloss paper, plain paper, rough paper or OHT is determined.
摘要:
A sensor system includes an LED configured to emit light to a recording medium and a light-receiving sensor configured to receive a transmitted light that has passed through the recording medium after having been emitted from the LED to the recording medium. An emitting optical axis of the LED is away from a perpendicular receiving optical axis of the light-receiving sensor.
摘要:
An image forming apparatus having a plurality of image bearing members, a plurality of colored toner developing units, and a transparent toner developing unit. Each colored toner developing unit has a developer bearing member. The rotational direction of the developer bearing members of the colored toner developing units is opposite to the rotational direction of the corresponding image bearing member, and the rotational direction of the developer bearing member of the transparent toner developing unit is the same as the rotational direction of the corresponding image bearing member.
摘要:
Provided is a picture reading device that is suited for discriminating the type/surface condition of a recording medium while requiring only a small circuit scale and less memory, and an image forming apparatus that uses the picture reading device. In a CMOS area sensor chip having a plurality of photoelectric conversion elements, there is provided a calculating unit for calculating the maximum value, the minimum value, and an average value of digital information related to a photoelectric conversion element in a specific area among the plurality of photoelectric conversion elements. Information calculated by the calculating unit is output in addition to digital information related to the plurality of photoelectric conversion elements.
摘要:
The invention is objected to perform fixing in an optimum fixing condition even with various kinds of recording materials or the like while improving usability by discriminating the kinds of recording materials. An image reading sensor 123 includes a reflective LED 301, a transmissive LED 303 disposed on the opposite side relative to a recording material 304 for detecting the transmitted amount of light, a CMOS area sensor 211, and an imaging lens 1113. The light from the reflective LED 301 as a light source is applied toward the surface of the recording material 304, and the reflected light from the recording material 304 is collected via the lens 303 and an image is formed on the CMOS area sensor 211. The LED 301 is disposed so as to apply LED light to the surface of the recording material 304 diagonally at a predetermined angle.
摘要:
An image heating apparatus for heating an image on a recording material by heat generation of a heating member includes a coil configured to generate a magnetic flux by energization a heat generation member having an electroconductive layer that generates heat by magnetic flux for heating an image on a recording material and, a frequency switching device for switching a frequency of a current supplied to the coil. The electroconductive layer includes a first electroconductive member at a central portion thereof and a second electroconductive member at an end portion thereof. The first electroconductive member has a resistence characteristic, with respect to the frequency of the current supplied to the coil, different from that of the second electroconductive member.