EP0153859A2
Expired / Lapsed
EP
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Image building apparatus
Assignee: Toshiba Corp
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Filing: 1985-02-26
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Granted: —
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Expires: 2005-02-26
Abstract
Abstract @ The improved image building apparatus is constructed such that recording medium, that is, recording paper is normally introduced into the image building section (30) with a thermal head (32) or the like component incorporated therein while it is stretched under the effect of a certain intensity of braking force which is exerted on the recording paper from the rear side as seen in the direction of transportation thereof. This causes an occurrence of such a malfunction as skewing, loosening or the like of the recording paper to be inhibited at least in the image building section (30). Thus, image building can be achieved without incorrect registering, deformation or the like recognized with the printing paper on which image transference has been carried out. To exert such braking force on the recording paper, there may be provided a clamping member for clamping the recording paper therebetween with a certain intensity of frictional force exerted on the latter, a stopper (SP) for limiting the freedom of rotation of roller or the like which serves to introduce the recording paper into the image building section (30) while the roller or the like rotates as a follower roller in accordance with transportation of the recording paper.
Inventors
- 👤 Masayoshi Nagashima
- 👤 Tomohiko Takahashi
- 👤 Naoto Higure
- 👤 Kanehiro Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
B; B41; B41J; B41J13/00; B41J15/00; B41J15/16; B41J2/00; B41J2/315; B41J2/32; B41J2/325
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
In an image building apparatus of the type including transporting means (40) for transporting a recording medium and an image building section (30) for building and recording an image on the recording medium, characterised by providing braking means (45A, 45B) for exerting braking force B on the recording medium from the rear side of the image building section with the use of the transporting means (40) while the latter transports the recording medium under the following operative condition where A represents transporting force required for transportation of the recording medium.
Claim 2
Dependent Claim
90 words
In an image building apparatus of the type including transporting means (40) for transporting a recording medium and an image building section (30) for building and recording an image on the recording medium, characterised by providing braking means (45A, 45B) for exerting braking force B on the recording medium from the rear side of the image building section with the use of the transporting means (40) while the latter transports the recording medium under the following operative condition where A represents transporting force required for transportation of the recording medium.
Claim 3
Dependent Claim
111 words
An image building apparatus as defined in claim 1, wherein the transporting means includes a platen roller (31) constituting a part of the image building section (30) and rotation following means (45B, 45A) adapted to rotate in the form of a follower roller which follows rotation of the platen roller while the recording medium is clamped or held therebetween, and the braking means (45A, 45B) includes friction means (45A, 45B) for the recording medium, said friction means serving to clamp or hold the recording medium between the friction means and the platen roller with frictional force produced by a combination of the -recording -medium and the braking force B exerted thereon.
Claim 4
Dependent Claim
107 words
An apparatus as defined in claim 2, wherein the rotation following means comprises one of a pair of pinch rollers (45B, 45A) adapted to clamp the recording medium between the platen roller (31) and the rotation following means at the position located before and behind the image building section (30), and the friction means for recording medium comprises one of the pinch rollers (45A, 45B) which is located at the position rearwardly as seen in the direction of transportation of the recording medium to inhibit it from being rotated in the form of a follower roller by means of a one direction rotation limiting member (48A, 48B).
Claim 5
Dependent Claim
53 words
An apparatus as defined in claim 3, wherein the pair of pinch rollers (45A, 45B) are supported on the one end portions of the swing levers (41A, 41B; 42A, 42B) which are normally urged toward the platen roller (31) under the effect of resilient force to come in pressure contact with the latter.
Claim 6
Dependent Claim
31 words
5, An apparatus as defined in claim 4, wherein the one direction rotation limiting member comprises a one-way clutch (48A, 48B) which is mounted on the axis of the pinch roller.
Claim 7
Dependent Claim
27 words
An apparatus as defined in claim 5, wherein the one-way clutch is fixedly fitted to the one end portion of the swing lever (41A, 41B; 42A, 42B).
Claim 8
Dependent Claim
60 words
An apparatus as defined in claim 5, wherein the one-way clutch (48A, 48B) is fixedly fitted to a housing (49A, B, C, D) disposed separately from the swing lever (41A, 41B; 42A, 42B) so that following of rotation of the pinch roller (45A, 45B) is limited by means of the one-way clutch with a certain extent of play permitted therefor.
Claim 9
Dependent Claim
81 words
An apparatus as defined in claim 7, wherein a straight line extending through the center of the shaft of the platen roller (31), the center of the shaft on which the one-way clutch (48A, 48B) is mounted and stopping members (SP) of the housing is orthogonally intersected with a straight line extending through the center of swinging movement of the swing lever (41A, 41B; 42A, 42B) and the center of the shaft on which the one-way clutch (48A, 48B) is mounted.
Claim 10
Dependent Claim
59 words
An apparatus as defined in claim 2 or 3, wherein the friction means (45A, 45B) is provided with non-adhesive material such as fluride based resin, silicon rubber or the like material each of which has a characteristic nature of non-adhesiveness against the recording medium at least on a surface adapted to come in surface contact with the recording medium.
Claim 11
Dependent Claim
138 words
An apparatus as defined in claim 1, wherein the transportation means (40) comprises a platen roller (31) constituting a-part of the image building section (30) and a pair of rotation following means (45A, 45B) adapted to follow rotation of the platen roller (31) while the recording medium is clamped or held between the platen roller (31), said rotation following means (45A, 45B) being located at the position before and behind the image building section (30), and the braking means includes one of the pair of rotation following means (54, 56) disposed at the position located rearwardly as seen in the direction of transportation of the recording medium and friction means (60) for the rotation following means for limiting the extent of freedom of following of rotation of the platen roller with frictional force.corresponding to the braking force B.
Claim 12
Dependent Claim
91 words
ll. An apparatus as defined in claim 10, wherein the rotation following means (54, 56) comprises a pinch roller and the friction means for the rotation following means comprises a frictional brake which includes a rotational disc (72) adapted to rotate as a follower disc in a certain one direction in accordance with following of rotation of the pinch roller via the one direction rotation limiting member (77, 79) and a stationary disc (70) adapted to come in frictional contact with said rotational disc (72) under the effect of frictional force.
Claim 13
Dependent Claim
41 words
An apparatus as defined in claim 11, wherein frictional force existent between the rotational disc (72) and the stationary disc (70) is determined smaller than the maximum static frictional force existent at least between the pinch roller and the recording medium.
References Cited (Backward Citations)
No citation records indexed.
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