Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K7/00—Ball-point pens
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
  • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for

Definitions

• the invention relates to a method for controlling writing instruments, in particular ball-point pens, on paper, in which the writing instrument is guided in a repetitive movement relative to the plane of the paper and the paper is moved in a direction ahead.
• the invention also relates to a device for carrying out the method.
• the control devices for writing instruments in particular ball-point pens, as they are known from the state of the art, have the following structure:
• the device has a socket installed so as to be able to pivot for a pliers clamp that holds the ballpoint pen.
• the collet is installed in the socket with a limited axial play and a small radial play, most of the time 0.2 mm, relative torsion is avoided thanks to a driver.
• the writing instrument is held at a predefined angle relative to the paper and possibly rotated around its longitudinal axis.
• the writing pressure is preferably defined by a weight.
• the socket for the writing instrument (most of the time, several of them, preferably ten, are placed close to each other) is installed in the recording equipment so that it performs circular movements relative to the plane of the paper (10 to 90 rotations / minute are described in a circumference of 100 mm for example, which corresponds to writing speeds of 1 m / min. at 9 m / min.).
• the paper on which one writes for control purposes is most of the time unwound from a roll and moved at a speed which can be chosen under the grip, which is referred to as a movement in advance.
• the object of the invention is to develop a test device and a test method for the control of ball-point pens which avoids the drawbacks of the known method with regard to the tips, the angles, the different accelerations and the overlays. writing.
• These objectives are achieved within the framework of the invention by the fact that the ballpoint pen performs on the stationary paper a movement back and forth between two predefined end points and that the movement of advance of the paper takes place when the pen- ball is found substantially at the extreme points.
• the test is carried out so that the ballpoint pen (or several ballpoint pens) is moved back and forth on a carriage transversely with respect to the advance movement of the paper between two predefined end points. It then presents, in the zone of the extreme points, a minimum speed or remains at rest for a predetermined time at the extreme point. The paper feed movement takes place during this time. The movements are then coordinated so that the line obtained forms a meander which consists of rectilinear trajectories.
• the writing instrument can be rotated continuously around its longitudinal axis, while again retaining a predetermined relationship between the number of rotations and the number of back and forth movements, for example one rotation every the 50 back and forth movements.
• the writing instrument is kept in an oblique position (60-70 °) predefined and constant with respect to the paper, the lines described by the movement of the carriage transversely with respect to the direction of advance of the paper represent applications or smears, while the movement in the direction of advance of the paper is equivalent to a kind of transverse layout. Due to the controllable target acceleration also obtained by modern technique when leaving the end points, a dynamic way of writing in a repeatable way is taken as the basis of the test and one recognizes the faults and writing instrument problems relatively simply due to the thinner and thicker line sections "wandering" across the pattern.
• the pattern obtained shows structures which lead to the conclusion that there are geometric irregularities in the writing tip, the ball, etc.
• test patterns (original) according to the state of the art give significant interference phenomena. These appear from the fact that the defects classify, because of the neighboring areas, into types that the human eye, but also optical devices of semi-automatic or fully automatic recognition, can perceive very precisely and which can be associated by those skilled in the art have different faults with writing instruments.
• FIG. 2 shows a test pattern according to the method of the invention which takes these characteristics into account and gives test patterns such as that shown.
• the test pattern shows a so-called meandering line, which means in the context of the invention that the sections oriented substantially in a straight line which extend one under the other practically at right angles are grouped together to form an angular line which meanders.
• the paper advance movement is preferably ensured by a stepping motor which is activated or deactivated for example by the position of the carriage.
• Figures 3 and 4 in conjunction with Figure 2 should be considered by observing Figures 3 and 4 in the direction of advance of the paper, which has the effect that the movements made transversely to the direction of advance which are caused by the eccentric or the carriage must be considered as an application or a smear depending on whether they are moving to the left or to the right.
• Figure 3 shows in schematic view a ballpoint pen 6 ready to write but not yet placed on paper, the ball 1 of the inner contour of the tip 2 of the ball pen 6 is raised on all sides and is surrounded by l ballpoint and centered ink.
• the ballpoint pen ink itself is not shown for reasons of visibility.
• the plane crossing the central point of the ball 1 normally with respect to the axis 5 is called the equatorial plane. Between this plane and the outlet of the mount is the curved gap called "gap 7" for the writing liquid.
• the breach 7 is about 1.5 to 4 micrometers (difference in diameter 3 to 8 micrometers).
• ink channel 3 which opens into an intermediate accumulator of annular shape 8.
• Five or six ink channels are usually provided in the tip, distributed regularly over the periphery.
• ⁇ alpha
• Figure 4 shows the changes that occur as soon as the writing instrument is placed on the paper 4:
• the ball 1 is pushed in its seat upwards and inwards so that the intervals 7 available for the The routing and removal of the ink from the ballpoint pen becomes of uneven thickness.
• the application movement only the upper thinned area of the gap remains available for the delivery of ink, while the lower wide area of the interval is available for the removal of excess ink.
• the movement of the ballpoint pen normally with respect to the plane of representation of FIG. 4, called the transverse plot, presents, compared to the application or the smear, a gap 7 configured in a manner not very different and which is therefore not shown, but it also contributes, depending on its length, to the possible deposition of dot-shaped ink on the paper mentioned above.
• the angle ⁇ (alpha) between the surface of the paper 4 and the axis 5 of the writing instrument 6 obviously also has an influence on the writing quality and is maintained during tests according to the state of the art. at 60 ° or 70 °. Other dimensions or even variations during the test are obviously conceivable, but this only concerns variants or sub-concepts of the invention.
• This type of variant also includes the fixing of the number of back and forth movements, the fixing of the different speeds or changes in speed and the ratio chosen respectively between the speed of advance of the paper and the speed of the transverse movement. It is also necessary to define the regulation of the ratio between these speeds and the rotational movement of the writing instrument 6 around its axis 5 due to the faculty of repeating the results, but this only relates to parameters of realization of the invention without touching the essence of the invention.
• a socket 11 is an element of a carriage not shown, it supports inside a sleeve 12 installed so as to be able to pivot.
• This sleeve supports, if necessary in one piece, a toothed wheel 13 and has a longitudinal slot in which protrudes into the interior of the sleeve 12 a driver 16 of a clamp 14.
• the clamp has, as mentioned in the introduction, a small radial clearance and is axially movable within limits.
• At the upper end of the collet rests an interchangeable weight 15, which blocks the writing pressure at a precisely defined level.
• the collet 14 maintains a test sample 15.
• FIG. 5 shows in a purely schematic manner the evolution of a test line with indication of the direction of advance V for the paper 4 and the movement of the carriage UD for the application or the smear.
• the method of the invention can also be used for paper pencils, colored pencils, chalk, fountain pens and other writing instruments.
• pencils or graphite leads it is important that there are no writing overlays in order to make measurements achievable by means of a densitometer in practice.

Landscapes

• Pens And Brushes (AREA)
• Cosmetics (AREA)
• Paper (AREA)

Priority Applications (1)

Applications Claiming Priority (4)

Publications (2)

Family

ID=8185166

Family Applications (2)

Family Applications Before (1)

Country Status (11)

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Family Cites Families (12)

• 2001
  • 2001-12-21 EP EP01890347A patent/EP1321310A1/de not_active Withdrawn
• 2002
  • 2002-12-23 EP EP02805418A patent/EP1456038B1/de not_active Expired - Lifetime
  • 2002-12-23 MX MXPA04006147A patent/MXPA04006147A/es active IP Right Grant
  • 2002-12-23 CN CNB028256212A patent/CN100368208C/zh not_active Expired - Fee Related
  • 2002-12-23 JP JP2003554456A patent/JP4368199B2/ja not_active Expired - Fee Related
  • 2002-12-23 WO PCT/FR2002/004527 patent/WO2003053716A1/fr not_active Ceased
  • 2002-12-23 ES ES02805418T patent/ES2340989T3/es not_active Expired - Lifetime
  • 2002-12-23 CA CA2470053A patent/CA2470053C/fr not_active Expired - Fee Related
  • 2002-12-23 AU AU2002365023A patent/AU2002365023B2/en not_active Ceased
  • 2002-12-23 DE DE60236203T patent/DE60236203D1/de not_active Expired - Lifetime
  • 2002-12-23 BR BRPI0215236-3A patent/BR0215236B1/pt not_active IP Right Cessation
• 2004
  • 2004-06-21 US US10/874,153 patent/US7171864B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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