Inventor

HIRATSUKA SEIICHIRO

JP54 patents

⚠️ This page may combine multiple inventors who share the name “HIRATSUKA SEIICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HIRATSUKA SEIICHIRO

KONISHIROKU PHOTO IND

Image processing apparatus

Multiplex image reproducing method

Apparatus for processing halftone image

Continuous image estimation method

Halftone image estimation methods for dither images

Developing method for electrostatic images using composite component developer under non-contacting conditions

Methods of compressing and reproducing color image data

Method and apparatus for estimating halftone image from binary image

Multiplex image reproducing apparatus

Method and apparatus for multicolor image forming

Developing method

Color image processing apparatus capable of discriminating between a monochromatic document and a color document

Marker color conversion apparatus for color image processing device

Color image processing apparatus provided with an image discrimination means

Method and apparatus for reading image

Color image processing apparatus

Toner control for a developer device

Apparatus for reproducing multi-color image

Image processing apparatus

Compact color image processing apparatus with enhanced density conversion

Color image processing apparatus

Multicolor image forming method and apparatus

Color image processing apparatus with digital color signal compression means

Copier with image transfer region determination and selective sampling of image data thereof

Apparatus for multicolor image forming wherein image forming conditions are adjusted based on reference images

Image forming apparatus

Apparatus for forming a multi-color toner image

Multi-color image forming method and apparatus

Method of forming multicolor images

Developing method in electrophotography using oscillating electric field

Method and apparatus for reproducing multi-color image and photoreceptor thereof

Method of and apparatus for image forming

Image reproducing apparatus with variable AC bias

Method of forming superimposed color images

Image forming apparatus

Multiplex image reproducing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Color separating device and color image reading device incorporating same

Reversible coding method, reversible coding apparatus, and memory medium used therein

Image encoding method and apparatus

Image processor

Halftone image forming apparatus including density based dot enlargement

Image processing separately processing two-density-level image data and multi-level image data

Image forming device for enhancing tone reproduction by changing dot size

Color adjustment method for pixels of color images that designates color and corresponding adjustment colors

Method of image coding, image coding apparatus, and recording medium including image coding program

Color image processing apparatus

Image compression method

Method of gradation reproduction

Image compression method

Image signal processing apparatus and image formation apparatus including the same