Photocopying – Contact printing – Light boxes
Patent
1994-03-15
1995-08-22
Royer, William J.
Photocopying
Contact printing
Light boxes
347115, 347116, 355208, G03G 1501
Patent
active
054445256
ABSTRACT:
The image forming apparatus can retain a stable and high image quality for many hours without use of any high precise mechanical parts and without causing any non-uniformity and mal-registration in a color image. In the image forming apparatus, an image recording medium (photosensitive drum) (6a) is driven by a rotative driving mechanism (pulleys and belts) (40a); and an image recording section (print bar) (6c) records an image repeatedly on the rotating image recording medium (6a) in a direction perpendicular to a rotational direction of the image recording medium. The image recorded on the image recording medium (6a) is transcribed onto an image transcribing medium (paper) (22) being fed in the rotational direction of the image recording medium (6a) to form an image. In particular, the apparatus comprises a rotation detecting section (rotary encoder) (6r) for detecting angular travel rates of the image recording medium (6a); and a recording timing control section (5) for controlling recording timing (HSYNC) at which the image is started to be recorded in the direction perpendicular to the rotational direction of the image recording medium (6a), on the basis of the angular travel rates detected by the rotation detecting section (6r).
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Electro-photography Proceeding, Japan Hard Copy '91; A-27P; Hirakura et al.; Jul. 1991; pp. 101-104.
Komiyama Nakaba
Kurihara Teruo
Mikami Manabu
Takahashi Masaki
Kabushiki Kaisha Toshiba
Royer William J.
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