PRINTING CONTROLLER AND ITS CONTROLLING METHOD

Japanese Patent JPH07323534

A

PURPOSE: To obtain a printing controller and its controlling method wherein dispersion in density for each position owing to a recording head is eliminated to form an excellent image.

CONSTITUTION: When a data of each component of KCMY is inputted, a code indicating a ratio wherein a data of color component to be watched therein occupies pixels to be watched, is outputted from a component ratio code forming circuit 102 to look up tables 104-107, and a data of a color component to be watched at present and the number of upper bits of a total value of respective components of the pixels to be watched are also supplied. Consequently, since a multiplying factor corresponding to each of KCMY is obtained from respective look up tables, it is calculated with multipliers 108-111, and lastly added with an adder 113. A corrected data of each component of the pixel to be watched is selected with a selector 114 only when a value set to a shift register 115 is '1'. In other cases excepting that, a multivalued data before correction is selected.

WO/2007/107374	METHOD OF GENERATING PRINTING COLOR PROFILES FOR COLOR MANAGED REPRODUCTION OF COLOR PRINTS WITH TRANSPARENT LAYER
JP4456823	A printing device that prints an image while grouping and storing the judgment results of the presence or absence of dot formation, and a printing control device for that purpose.
JP6288081	Color processing device, image forming device and color processing method

MIKAMI FUMIO
NONAKA TAKASHI
HAYASHI TOSHIO
SUGISHIMA KIYOHISA
HIROSE MASAYUKI
MOTOYAMA EIICHI
ARAI KOJI
YAMAGATA SHIGEO

JP11902194A

December 12, 1995

May 31, 1994

Click for automatic bibliography generation  

CANON KK

B41J2/21; B41J2/01; B41J2/52; H04N1/407; (IPC1-7): B41J2/01; B41J2/21; B41J2/52; H04N1/407

Yasunori Otsuka (1 person outside)

Previous Patent: Reduction of unwanted sound transmission

Next Patent: IMAGE RECORDER, COPYING MACHINE USING THAT, AND CONTROL METHOD FOR IMAGE RECORDER