Light quantity adjusting apparatus, color-registration-deviation amount detecting apparatus light quantity adjusting method, and color-registration-deviation amount detecting method
AssigneeRicoh Company, Ltd.
InventorKatsuyuki Kitao
Life of this patent
Estimating the term…
Abstract
Light quantity is adjusted in an image forming apparatus including an image carrier by forming a pattern on the image carrier, detecting a light quantity of a reflecting light from the pattern and outputting a voltage, reading the light quantity of the reflecting light from the pattern detected once based on a present light quantity set, calculating from the light quantity read, a set light quantity corresponding to a target output voltage for printing, and setting the set light quantity calculated.
Claims28
A light quantity adjusting apparatus comprising:
- a forming unit that forms a pattern on an image carrier;
- a detector that detects a light quantity of a reflecting light from the pattern formed by the forming unit and outputs a voltage corresponding to the light quantity detected;
- a calculating unit that reads the light quantity of the reflecting light from the pattern detected once by the detector based on a present light quantity set for the detector, and calculates from the light quantity read, a set light quantity corresponding to a target output voltage for printing;
- and
- a setting unit that sets the set light quantity calculated by the calculating unit.
A color-registration-deviation amount detecting apparatus comprising:
- a light quantity adjusting apparatus including
- a forming unit that forms a pattern on an image carrier,
- a detector that detects a light quantity of a reflecting light from the pattern formed by the forming unit and outputs a voltage corresponding to the light quantity detected,
- a calculating unit that reads the light quantity of the reflecting light from the pattern detected once by the detector based on a present light quantity set for the detector, and calculates from the light quantity read, a set light quantity corresponding to a target output voltage employed for printing, and
- a setting unit that sets the set light quantity calculated by the calculating;
- and
- a color-registration-deviation amount detector that detects a color registration deviation amount after the setting unit sets the set light quantity.
A method of adjusting light quantity in an image forming apparatus including an image carrier, the method comprising:
- forming a pattern on the image carrier;
- detecting a light quantity of a reflecting light from the pattern formed at the forming and outputting a voltage corresponding to the light quantity detected;
- reading the light quantity of the reflecting light from the pattern detected once at the detecting based on a present light quantity set for the detecting;
- calculating from the light quantity read, a set light quantity corresponding to a target output voltage for printing;
- and
- setting the set light quantity calculated by the calculating.
A method of determining a color registration deviation amount in an image forming apparatus including an image carrier, the method comprising:
- forming a pattern on the image carrier;
- detecting a light quantity of a reflecting light from the pattern formed at the forming and outputting a voltage corresponding to the light quantity detected;
- reading the light quantity of the reflecting light from the pattern detected once at the detecting based on a present light quantity set for the detecting;
- calculating from the light quantity read, a set light quantity corresponding to a target output voltage for printing;
- setting the set light quantity calculated by the calculating;
- and
- determining a color registration deviation amount after the set light quantity is set at the setting.
A light quantity adjusting apparatus comprising:
- a forming means for forming a pattern on an image carrier;
- a detecting means for detecting a light quantity of a reflecting light from the pattern formed by the forming means and outputting a voltage corresponding to the light quantity detected;
- a calculating means for reading the light quantity of the reflecting light from the pattern detected once by the detecting means based on a present light quantity set for the detecting means, and calculating from the light quantity read, a set light quantity corresponding to a target output voltage for printing;
- and
- a setting means for setting the set light quantity calculated by the calculating means.
Dependencies are inferred from the claim text.