公开(公告)号：US5189521A

公开(公告)日：1993-02-23

申请号：US711648

申请日：1991-06-06

申请人： Toshihiko Ohtsubo ,  Seita Shouno ,  Akio Suzuki ,  Kiyohisa Sugishima ,  Eiichi Takagi ,  Yoshihiro Takada

发明人： Toshihiko Ohtsubo ,  Seita Shouno ,  Akio Suzuki ,  Kiyohisa Sugishima ,  Eiichi Takagi ,  Yoshihiro Takada

IPC分类号： B41J2/01 ,  B41J2/12 ,  B41J29/46 ,  H04N1/401 ,  H04N1/407 ,  H04N1/60

CPC分类号： H04N1/6033 ,  H04N1/4015

摘要： There is disclosed an image forming apparatus for recording an original image read by a reading unit on a recording medium uses a recording head having an array of a plurality of recording elements. The apparatus includes pattern forming unit for forming, on the recording medium, a test pattern having an area larger than an array range of the plurality of recording elements using the recording head in accordance with a predetermined operation, a detection unit for causing the reading unit to read the test pattern formed on the recording medium by the pattern forming unit in accordance with a predetermined operation, and detecting a density distribution within the array range of the plurality of recording elements, a generation unit for generating correction data of a drive condition for uniforming a density during image formation on the basis of the density distribution detected by the detection unit in correspondence with the plurality of recording elements, and a guide unit for display the predetermined operations on a display unit.