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Color Laser Printer Color Registration by QLPT Mechanism

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A small color laser printer using four all-in-one color cartridges and one laser scanning unit (LSU) has been developed. Each color cartridge contains an OPC drum, a charger, a cleaner, and a color developing unit. The cartridges are rotationally switched to produce each color image which is superimposed on an intermediate transfer (IMT) belt. The superimposed full-color image is transferred to paper all at once. The primary feature of this structure is the use of four all-in-one cartridges. It makes color laser printer as easy to use as monochrome ones. When using four OPC drums, each OPC drum has mechanical differences which would normally cause registration errors among colors in conventional mechanisms. The newly developed “QuaLity Positioning Technology” (abbreviated to QLPT) mechanism cancels the registration errors and ensures better image quality. The QLPT mechanism consists of three points, which are

1) Holding and locating mechanism;

2) Solid coupling and synchronizing mechanism;

3) Slipping correction mechanism.

The essence of the QLPT mechanism is described below.
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Document Type: Research Article

Publication date: 1999-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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