EP0670056A1 - Dispositif d'aide a la photocopie de livres - Google Patents
Dispositif d'aide a la photocopie de livresInfo
- Publication number
- EP0670056A1 EP0670056A1 EP93924681A EP93924681A EP0670056A1 EP 0670056 A1 EP0670056 A1 EP 0670056A1 EP 93924681 A EP93924681 A EP 93924681A EP 93924681 A EP93924681 A EP 93924681A EP 0670056 A1 EP0670056 A1 EP 0670056A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- faces
- face
- transparent
- tinted
- central plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/60—Apparatus which relate to the handling of originals
- G03G15/605—Holders for originals or exposure platens
Definitions
- the invention relates to the field office accessories or life Marie.
- Elle consists of enhancements to our aid device photocopying of books (see our patent 89 14 935 and our request in ⁇ ternational 91401222.4-2213) .
- Said device consists of a particular upper profile rule, for the record, roughly in circumflex accent, which can be separated by a central bar see Fig 1.
- the purpose of the present improvements is to make the device more versatile than it had become as a result of the technological development of photocopiers. Indeed the basic process having slightly changed in particular on photocopiers of major brands known as scanning (with mobile light bar), by far the most numerous, the copies obtained by using the ruler parallel to the light bar are no longer correct. While the copies remain of good quality when the ruler is perpendicular to the light bar, the black shadow of the central plate is projected along the latter and this in a much more visible way than in the past. the rule is in one piece (without central plate) as there are neither side faces nor plate there is no phenomenon of light retention in one of the two parts.
- the improvements described here therefore aim to rebalance the illumination of the original, in contact with the surface of each of the two sides, dark and bright.
- the first solution is expensive.
- the height of the steps must be less than, 100 micrometers.
- the effect produced by this modification of the surface is to notably decrease the total internal reflection by the change in the inclination of the surface of the upper face. But there is to fear a blurring effect, all the more lighter than the grooves are fine, but which can nea ⁇ r- -less persist.
- the third solution is to cover the upper side of the ruler, on the dark side, with a transparent coating, which can be colored, plate, film or thin layer.
- a transparent coating which can be colored, plate, film or thin layer.
- This solution which still has the effect of reducing internal reflection, requires a more complex and more delicate technology for manufacturing than if one is satisfied with a single material for the transparent part on the dark side, can nevertheless '' be very interesting if performance is important. This can be the case if the film used is a gelatin film. whose refractive index is less important, if said film is laser marked which traces miniscules stripes by the holography process, lines whose goal is once again to avoid total internal reflexion.
- a transparent plate with frosted side faces which can, by the sole effect of the multiplication of bifaces of medium with different refractive index, dissipate light to avoid the effect being over-illuminated as far as its faces can be frosted and colored.
- a translucent, diffusing plate of determined thickness of single color (yellow to white), which allows, while regulating them, the exchanges of light between the two sides of the rule, in particular by allowing the illumination of the lower part of the upper side of the dark side by light coming from the bright side. It should be noted that the thickness, the hue and the degree of opacity are interdependent.
- Figure 1 is a profile view of the rule, in situation, before the present prefectiontions.
- Figure 2 is a diagram in bird's-eye view showing the different positions of the rule, in use.
- Figure 3 is a bird's eye view of a ruler segment, showing the different spurious effects.
- FIG. 4 is a section, greatly enlarged, on the dark side, of a part of the device in the vicinity of its surface, showing the characteristics of the holographic film.
- FIG. 5 is an enlarged cross-section isolating the central part of the rule the improvements according to the best alternative embodiment.
- FIG. 6 is an enlarged overview of the profile of the rule, with the same improvements as in FIG. 5.
- Figure 1 allows you to tighten.
- the photocopier glass is in (1) .On top is placed the ruler seen from 0 profile.
- the points T and T '.located vertically with points R and R' respectively are the heels of the masses (2) and (3) .respectively, and the faces (6) and (7) .corresponding to the segments RT and R'-T ' .respective- -ment are the side faces of the parts (2) and (3) always respecti- -vement.
- P and P ' are the feet es parts (2) and (3) still respectively.
- the bar or row of light is (20) and sonmiroir in (21) .
- the double arrow near the light bar (21) shows the direction of travel Pen- ⁇ ing the copie.Les other arrows show some the path rays bright types
- FIG. 2 simply shows the device in situation.
- the ruler can be placed along the axis XX ', ie perpendicular to the light bar (20); it is in this situation that the rule works even without the improvements envisaged here.
- FIG. 3 shows a view from above, of a rule segment before improvements, in the case where said rule is in three distinct parts.
- the upper edges (31) and (32) corresponding to the points R and R 'respectively of FIG. 1.
- the zone (33) represents the overhead light which is on both sides if the central plate (30) is transparent. If it is opaque against a shadow (34) projecting along the edge (31) of light spots clair.Des side (35) occur if the front su ⁇ Stainlesseure (11) is not roughened, or better frosted and slightly tinted, as we have already said about polycarbonate. The frosted should be around that produced by grain 800, to have both good readability and an elimination of said light spots.
- FIG. 4 shows the use of the hologram film (40) placed on the upper face (12) of the mass of transparent material (3), on the dark side.
- the stripes traced by laser in the very mass of the transparent film ( 40) will be oriented in a direction corresponding to an angle O of about 35 ° with the upper face (41) of said film (40), the plane between the sides of the angle Q being oriented upwards.
- the central plate (36) Is about 0.5 mm thick translucent, cut at a bevel at its foot so as not to protrude from the blind strip T-T ', its color must be related to the tinted nature or not of the mass of transparent material (2) on the light side.
- the relative transparency of this plate is quite important.
- the mass of transparent material (2) on the light side also has grooves (25) which may have the same characteristics as those on the dark side. It will be noted that they only start high enough that they diminish in order to do not exceed the blind strip, the general inclination of the lateral face (6) being here, also about 12 ° with respect to the vertical.
- the utility of FIG. 6 is to show the assembly with the improvements according to the best variant, because the simplest, and to describe the profile of the lower face (5) on the dark side.
- the rule is really versatile, and allows, on scanning photocopiers.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9213898A FR2698185B1 (fr) | 1992-11-19 | 1992-11-19 | Nouveaux perfectionnements à un dispositif d'aide à la photocopie de livres, prenant la forme d'une règle de profil particulier. |
FR9213898 | 1992-11-19 | ||
PCT/FR1993/001095 WO1994011790A1 (fr) | 1992-11-19 | 1993-11-05 | Dispositif d'aide a la photocopie de livres |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0670056A1 true EP0670056A1 (fr) | 1995-09-06 |
Family
ID=9435684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93924681A Withdrawn EP0670056A1 (fr) | 1992-11-19 | 1993-11-05 | Dispositif d'aide a la photocopie de livres |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0670056A1 (fr) |
AU (1) | AU5425294A (fr) |
FR (1) | FR2698185B1 (fr) |
WO (1) | WO1994011790A1 (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63254437A (ja) * | 1987-04-13 | 1988-10-21 | Seiko Epson Corp | コピ−用アタツチメント |
FR2650409A1 (fr) * | 1989-07-28 | 1991-02-01 | Patinier Andre | Dispositif d'aide a la photocopie de livres |
EP0622693A1 (fr) * | 1991-05-10 | 1994-11-02 | André Patinier | Dispositif d'aide à la photocopie de livres |
-
1992
- 1992-11-19 FR FR9213898A patent/FR2698185B1/fr not_active Expired - Fee Related
-
1993
- 1993-11-05 WO PCT/FR1993/001095 patent/WO1994011790A1/fr not_active Application Discontinuation
- 1993-11-05 AU AU54252/94A patent/AU5425294A/en not_active Abandoned
- 1993-11-05 EP EP93924681A patent/EP0670056A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO9411790A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2698185B1 (fr) | 1995-01-27 |
AU5425294A (en) | 1994-06-08 |
WO1994011790A1 (fr) | 1994-05-26 |
FR2698185A1 (fr) | 1994-05-20 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19950613 |
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AK | Designated contracting states |
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17Q | First examination report despatched |
Effective date: 19960607 |
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GRAG | Despatch of communication of intention to grant |
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GRAG | Despatch of communication of intention to grant |
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GRAH | Despatch of communication of intention to grant a patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19980513 |