TOOTHED BELT, TOOTHED BELT TRANSMISSION DEVICE, AND OFFICE APPLIANCES

Title:

TOOTHED BELT, TOOTHED BELT TRANSMISSION DEVICE, AND OFFICE APPLIANCES

Document Type and Number:

WIPO Patent Application WO/2000/058644

Kind Code:

A1

Abstract:

A belt tooth part (11) of a toothed belt (8) of a toothed belt transmission device used for those office appliances such as a printer and a copying machine, comprising tooth root parts (12, 12) formed of arc surfaces disposed symmetrically with respect to a centerline (C2) in tooth width direction, power transmission parts (13, 13) formed of projected arc surfaces provided continuously from the tooth root parts (12, 12) and symmetrically with respect to the centerline (C2) in tooth width direction, tooth tip parts (14, 14) formed of arc surfaces provided continuously from both power transmission parts (13, 13) and symmetrically with respect to the centerline (C2) in tooth width direction, and a tooth crest (15) formed of a generally flat surface provided to connect both tooth crests (14, 14) continuously to each other, wherein the maximum pressure angle $g(u)B at a connection part of the power transmission part (13) with the tooth root part (12) is set at 15 to 25°, the side face of the belt tooth part (11) is brought into contact slowly with the side face of a pulley tooth groove part (3) at the time of engagement, and a vertical component of a reaction produced when the belt tooth part (11) is slid into the pulley tooth groove part (3) is reduced, whereby a nonuniformity in speed of the toothed belt (8) can be reduced as low as possible to increase the printing accuracy and image quality of the office appliances.

More Like This:

JPS5644679	PRINTING-RECORDER
JP2799776	INDUSTRIAL APPLICABILITY: Card read / write printing processing device and its control method

Inventors:

OCHIAI MASAKI (JP)
YANAGI KYOTARO (JP)
KAWAHARA HIDEAKI (JP)
KIDO RYUICHI (JP)

Application Number:

PCT/JP2000/001798

Publication Date:

October 05, 2000

Filing Date:

March 23, 2000

Export Citation:

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Assignee:

BANDO CHEMICAL IND (JP)
OCHIAI MASAKI (JP)
YANAGI KYOTARO (JP)
KAWAHARA HIDEAKI (JP)
KIDO RYUICHI (JP)

International Classes:

B41J19/00; B41J19/20; F16G1/28; F16H7/02; (IPC1-7): F16G1/28; F16H7/02; F16H55/17; B41J19/20

Foreign References:

JPS56141245U	1981-10-24
US3924481A	1975-12-09
US5405299A	1995-04-11
EP0368099A1	1990-05-16
EP0106694A1	1984-04-25
JPH0394272A	1991-04-19
JPS63297838A	1988-12-05
JPH01279135A	1989-11-09
US5624337A	1997-04-29
JPH06307522A	1994-11-01
JPH0542252A	1993-02-23

Other References: