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US 5,988,635 AGranted
Sheet transporting device
AssigneeSeiko Epson Corporation
InventorKeiichi Ohshima
Life of this patent
Estimating the term…
Abstract
A sheet transporting device includes a drive roller including a high rigidity roller having a surface coated with ceramic particles and a follower roller including an elastic roller having a surface coated with a low friction material. A sheet of printing medium is nipped and fed by the drive roller and the transporting roller.
Claims12
A sheet transporting device, comprising:
- a drive roller including a highly rigid roller having a first surface, and a coating on said first surface, said coating having ceramic particles formed with raised edges therein, wherein said coating is applied to said first surface by spraying with said ceramic particles being mixed therein;
- and
- a follower roller having a second surface, said second surface coated with a low friction material, said follower roller acting with said drive roller to feed printing media while the printing medium is disposed between said follower roller and said drive roller.
A method for forming a sheet transporting device for transporting printing media in a sheet feed direction, said method comprising the steps of:
- providing a drive roller having a first surface;
- spraying a coating onto said first surface, said coating having ceramic particles with raised edges mixed therein;
- permitting said sprayed coating to dry;
- providing a follower roller having a second surface coated with a low friction material;
- and, then,
- arranging said follower roller to act with said drive roller to nip the printing media and transport it in the sheet feed direction.
3 more elements
Dependencies are inferred from the claim text.