Long sheet material holding device and printer

Patent metadata

Field	Value
Publication number	US-9539839-B2
Application number	US-201414900454-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Jun 21, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

In order to obtain a ribbon feeding shaft capable of accurately adjusting a position of a regulating member and preventing a positional deviation, a long sheet material holding device includes a pair of first locking groove trains ( 91 c and 91 d ) arranged in parallel with each other along the axial direction of the holding shaft ( 91 ), the pair of first locking groove trains ( 91 c and 91 d ) having a series of grooves ( 61 c and 61 d ) respectively, the series of grooves ( 61 c and 61 d ) extending across the axial direction of the holding shaft ( 91 ), each of the series of grooves ( 61 c and 61 d ) being provided with slope surfaces ( 71 c, 71 d ) sloped along the axial direction of the holding shaft ( 91 ) and oppositely to each other and perpendicular surfaces ( 81 c, 81 d ) perpendicular to the axial direction of the holding shaft ( 91 ), and a pair of second locking groove trains ( 92 c, 92 d ) formed in a pair of locking members ( 92 x, 92 y ) provided in the regulating member 92 inserted into the holding shaft ( 91 ), to match the surfaces of the pair of first locking groove trains ( 91 c and 91 d ).

First claim

The invention claimed is:

1. A long sheet material holding device comprising:
a holding shaft configured to hold a long sheet material in a roll shape;
a pair of first locking groove trains arranged in parallel with each other along the axial direction of the holding shaft, the pair of first locking groove trains having a series of grooves respectively, each of the series of grooves being provided with slope surfaces sloped along the axial direction of the holding shaft and perpendicular surfaces perpendicular to the axial direction of the holding shaft, the slope surfaces and the perpendicular surfaces, in each of the series of grooves, being positioned opposite to each other relative to the grooves formed therebetween with respect to the axial direction of the holding shaft from a first end to a second end;
a regulating member provided to be movable along the axial direction of the holding shaft, the regulating member being configured to regulate a position of the long sheet material held by the holding shaft; and
a pair of locking members provided in the regulating member to match the pair of first locking groove trains, each of the locking members having a second locking groove train, the second locking groove train having a series of grooves, the series of grooves having surfaces to match the slope surfaces and the perpendicular surfaces of the grooves of the first locking groove train, the second locking groove trains being engaged with the first locking groove trains to fix the regulating member to the holding shaft.

2. The long sheet material holding device according to claim 1 , wherein each of the pair of the locking members includes a control knob manipulated by an operator and a groove train portion positioned oppositely to the control knob with respect to a swing point, the groove train portion being provided with the second locking groove train, the locking members being swingable between an engagement position where the second locking groove trains are engaged with the first locking groove trains and a disengagement position where the second locking groove trains are disengaged from the first locking groove trains,
the long sheet material holding device further includes a biasing member configured to bias the locking member toward the engagement position, and
the locking member is displaced from the engagement position to the disengagement position when the control knobs of the pair of locking members are manipulated against a biasing force of the biasing member.

3. The long sheet material holding device according to claim 1 , wherein the holding shaft is provided with a scale, the scale indicating a fixation position of the regulating member corresponding to a width of the long sheet material with respect to the holding shaft.

4. The long sheet material holding device according claim 1 , further comprising a stopper provided at one end of the holding shaft, the stopper being configured to prevent the regulating member from being removed from the holding shaft.

5. A printer comprising:
a print head configured to print predetermined information on a print medium by using an ink ribbon;
a platen roller provided to face the print head by interposing the print medium;
a ribbon feeding shaft configured to feed the ink ribbon to the print head; and
a ribbon winding shaft configured to wind out the ink ribbon,
wherein any one of the ribbon feeding shaft and the ribbon winding shaft is the long sheet material holding device according to claim 1 .

6. The long sheet material holding device according to claim 1 , further comprising a catch configured to prevent a pipe-like member from being drifted when it is inserted to the holding shaft, the pipe-like member being configured to fix a tip of the long sheet material.

7. The long sheet material holding device according to claim 1 , wherein the regulating member is not rotatable against the holding shaft.

8. The long sheet material holding device according to claim 1 , wherein the holding shaft has a joint being configured to transmit a driving force from a motor.

9. The printer according to claim 5 , wherein the ribbon feeding shaft and the ribbon winding shaft are detachable.

Assignees

• Sato Holdings Kk

Inventors

• Maekawa Hitoshi

Classifications

• B65H75/241

  axially adjustable reels or bobbins · CPC title

• B41J17/24 Primary

  Webs supplied from reels or spools attached to the machine · CPC title

• B65H2403/52

  Translation screw-thread mechanisms · CPC title

• B41J33/14 Primary

  Ribbon-feed devices or mechanisms · CPC title

• B65H16/06

  both-ends type · CPC title