Positioning apparatus and method thereof

Details Positioning apparatus and method thereof Positioning apparatus and method thereof

2006-07-31

2008-10-21

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S559290, C250S234000, C033S707000, C347S019000

Reexamination Certificate

active

07439488

ABSTRACT:
A positioning apparatus for a printer is provided. The positioning apparatus includes at least one encoder, an OPC belt, and a code strip consisting of a reference bar code region, a blank region and normal bar code region. The OPC belt is moved relatively to the encoder and has a joint region. The code strip is mounted on the OPC belt and has a plurality of bar codes. The encoder is used for detecting the bar codes and generating a displacement signal representing a displacement of the OPC belt moved relatively to the encoder. The blank region may be adjoined the joint region. Therefore, a home position can be located precisely by the displacement signal due to the existence of the reference bar code region and blank region. Moreover, a positioning method for a printer is also disclosed.

REFERENCES:
patent: 4832518 (1989-05-01), Moriyama
patent: 2006/0279597 (2006-12-01), Ishimoto et al.

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