Printer
AssigneeTohoku Ricoh Co., Ltd.
InventorsKeiichi Chiba, Hironobu Takasawa
Life of this patent
Estimating the term…
Abstract
A printer including drive pulleys each being mounted on a particular print drum. Each of the print drums has a pitch circle diameter and a number of teeth related to each other as: d/z<1 where d denotes the pitch circle diameter (mm) and z denotes the number of teeth.
Claims4
A printer comprising:
- a plurality of print drums spaced from each other in a direction of paper conveyance;
- toothed drive pulleys each being mounted on one of said plurality of print drums;
- and
- a timing belt passed over said toothed drive pulleys for allowing said plurality of print drums to rotate in synchronism with each other,
- wherein each of said toothed drive pulleys has a pitch circle diameter and a number of teeth related as:
- d/z<1
- where d denotes the pitch circle diameter (mm) and z denotes the number of teeth.
In a synchronous driving device including a drive member and a driven member, drive pulleys each being mounted on one of said drive member and said driven member, and a timing belt passed over said drive pulleys for causing said drive member and said driven member to rotate in synchronism with each other,
- wherein each of said drive pulleys has a pitch circle diameter and a number of teeth related as
- d/z<1
- where d denotes the pitch circle diameter (mm) and z denotes the number of teeth.
In a printer including a plurality of print drums spaced from each other in a direction of paper conveyance, toothed drive pulleys each being mounted on one of said plurality of print drums, and a timing belt passed over said toothed drive pulleys for allowing said plurality of print drums to rotate in synchronism with each other,
- wherein each of said toothed drive pulleys has a pitch circle diameter and a number of teeth related as:
- d/z<1
- where d denotes the pitch circle diameter (mm) and z denotes the number of teeth.
A device for driving a drive side and a driven side in synchronism, comprising:
- a rotary member with toothed drive pulley positioned at the drive side;
- a rotary member with toothed drive pulley positioned at the driven side;
- and
- a timing belt passed over said toothed drive pulleys for causing said rotary members to rotate in synchronism with each other,
- wherein each of said toothed drive pulleys has a pitch circle diameter and a number of teeth related as:
- d/z<1
- where d denotes the pitch circle diameter (mm) and z denotes a number of teeth.
Dependencies are inferred from the claim text.