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Volume: 14 | Article ID: art00021_2
High Speed and High Definition Technology for Laser Printing
  DOI :  10.2352/ISSN.2169-4451.1998.14.1.art00021_2  Published OnlineJanuary 1998

A new type of multi-beam laser scanning unit was developed that makes high speed and high resolution printing possible. The system simultaneously scans adjacent scanning lines by combining beams from two laser diodes (LDs).Features of the unit are as follows:1) Easy to operate because the light sources and all functions related to beam combination are unified in a light source unit.2) Easy setting and changing scanning line pitch using a simple mechanism.3) Adaptability to all standard LDs. The optimum LD for the optical system can be chosen.4)Can be upgraded from a single beam scanning unit simply only by replacing the light source unit.This paper shows the structure and features and describes how implementation of this new type of multi-beam laser scanning unit (outline shown in Figure 1) was achieved. This multi-beam laser scanning unit is installed in Ricoh MFPs and digital copiers.

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Tatsuya Ito, Tomohiro Nakajima, "High Speed and High Definition Technology for Laser Printingin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP14),  1998,  pp 417 - 421,

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